diff options
Diffstat (limited to 'tools/perf/tests')
127 files changed, 18896 insertions, 0 deletions
diff --git a/tools/perf/tests/.gitignore b/tools/perf/tests/.gitignore new file mode 100644 index 000000000..d053b325f --- /dev/null +++ b/tools/perf/tests/.gitignore @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0-only +llvm-src-base.c +llvm-src-kbuild.c +llvm-src-prologue.c +llvm-src-relocation.c diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build new file mode 100644 index 000000000..4d15bf604 --- /dev/null +++ b/tools/perf/tests/Build @@ -0,0 +1,100 @@ +# SPDX-License-Identifier: GPL-2.0 + +perf-y += builtin-test.o +perf-y += parse-events.o +perf-y += dso-data.o +perf-y += attr.o +perf-y += vmlinux-kallsyms.o +perf-y += openat-syscall.o +perf-y += openat-syscall-all-cpus.o +perf-y += openat-syscall-tp-fields.o +perf-y += mmap-basic.o +perf-y += perf-record.o +perf-y += evsel-roundtrip-name.o +perf-y += evsel-tp-sched.o +perf-y += fdarray.o +perf-y += pmu.o +perf-y += pmu-events.o +perf-y += hists_common.o +perf-y += hists_link.o +perf-y += hists_filter.o +perf-y += hists_output.o +perf-y += hists_cumulate.o +perf-y += python-use.o +perf-y += bp_signal.o +perf-y += bp_signal_overflow.o +perf-y += bp_account.o +perf-y += wp.o +perf-y += task-exit.o +perf-y += sw-clock.o +perf-y += mmap-thread-lookup.o +perf-y += thread-maps-share.o +perf-y += switch-tracking.o +perf-y += keep-tracking.o +perf-y += code-reading.o +perf-y += sample-parsing.o +perf-y += parse-no-sample-id-all.o +perf-y += kmod-path.o +perf-y += thread-map.o +perf-y += llvm.o llvm-src-base.o llvm-src-kbuild.o llvm-src-prologue.o llvm-src-relocation.o +perf-y += bpf.o +perf-y += topology.o +perf-y += mem.o +perf-y += cpumap.o +perf-y += stat.o +perf-y += event_update.o +perf-y += event-times.o +perf-y += expr.o +perf-y += backward-ring-buffer.o +perf-y += sdt.o +perf-y += is_printable_array.o +perf-y += bitmap.o +perf-y += perf-hooks.o +perf-y += clang.o +perf-y += unit_number__scnprintf.o +perf-y += mem2node.o +perf-y += maps.o +perf-y += time-utils-test.o +perf-y += genelf.o +perf-y += api-io.o +perf-y += demangle-java-test.o +perf-y += pfm.o +perf-y += parse-metric.o +perf-y += pe-file-parsing.o +perf-y += expand-cgroup.o + +$(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build + $(call rule_mkdir) + $(Q)echo '#include <tests/llvm.h>' > $@ + $(Q)echo 'const char test_llvm__bpf_base_prog[] =' >> $@ + $(Q)sed -e 's/"/\\"/g' -e 's/\(.*\)/"\1\\n"/g' $< >> $@ + $(Q)echo ';' >> $@ + +$(OUTPUT)tests/llvm-src-kbuild.c: tests/bpf-script-test-kbuild.c tests/Build + $(call rule_mkdir) + $(Q)echo '#include <tests/llvm.h>' > $@ + $(Q)echo 'const char test_llvm__bpf_test_kbuild_prog[] =' >> $@ + $(Q)sed -e 's/"/\\"/g' -e 's/\(.*\)/"\1\\n"/g' $< >> $@ + $(Q)echo ';' >> $@ + +$(OUTPUT)tests/llvm-src-prologue.c: tests/bpf-script-test-prologue.c tests/Build + $(call rule_mkdir) + $(Q)echo '#include <tests/llvm.h>' > $@ + $(Q)echo 'const char test_llvm__bpf_test_prologue_prog[] =' >> $@ + $(Q)sed -e 's/"/\\"/g' -e 's/\(.*\)/"\1\\n"/g' $< >> $@ + $(Q)echo ';' >> $@ + +$(OUTPUT)tests/llvm-src-relocation.c: tests/bpf-script-test-relocation.c tests/Build + $(call rule_mkdir) + $(Q)echo '#include <tests/llvm.h>' > $@ + $(Q)echo 'const char test_llvm__bpf_test_relocation[] =' >> $@ + $(Q)sed -e 's/"/\\"/g' -e 's/\(.*\)/"\1\\n"/g' $< >> $@ + $(Q)echo ';' >> $@ + +ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc)) +perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o +endif + +CFLAGS_attr.o += -DBINDIR="BUILD_STR($(bindir_SQ))" -DPYTHON="BUILD_STR($(PYTHON_WORD))" +CFLAGS_python-use.o += -DPYTHONPATH="BUILD_STR($(OUTPUT)python)" -DPYTHON="BUILD_STR($(PYTHON_WORD))" +CFLAGS_dwarf-unwind.o += -fno-optimize-sibling-calls diff --git a/tools/perf/tests/api-io.c b/tools/perf/tests/api-io.c new file mode 100644 index 000000000..2ada86ad6 --- /dev/null +++ b/tools/perf/tests/api-io.c @@ -0,0 +1,304 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "debug.h" +#include "tests.h" +#include <api/io.h> +#include <linux/kernel.h> + +#define TEMPL "/tmp/perf-test-XXXXXX" + +#define EXPECT_EQUAL(val, expected) \ +do { \ + if (val != expected) { \ + pr_debug("%s:%d: %d != %d\n", \ + __FILE__, __LINE__, val, expected); \ + ret = -1; \ + } \ +} while (0) + +#define EXPECT_EQUAL64(val, expected) \ +do { \ + if (val != expected) { \ + pr_debug("%s:%d: %lld != %lld\n", \ + __FILE__, __LINE__, val, expected); \ + ret = -1; \ + } \ +} while (0) + +static int make_test_file(char path[PATH_MAX], const char *contents) +{ + ssize_t contents_len = strlen(contents); + int fd; + + strcpy(path, TEMPL); + fd = mkstemp(path); + if (fd < 0) { + pr_debug("mkstemp failed"); + return -1; + } + if (write(fd, contents, contents_len) < contents_len) { + pr_debug("short write"); + close(fd); + unlink(path); + return -1; + } + close(fd); + return 0; +} + +static int setup_test(char path[PATH_MAX], const char *contents, + size_t buf_size, struct io *io) +{ + if (make_test_file(path, contents)) + return -1; + + io->fd = open(path, O_RDONLY); + if (io->fd < 0) { + pr_debug("Failed to open '%s'\n", path); + unlink(path); + return -1; + } + io->buf = malloc(buf_size); + if (io->buf == NULL) { + pr_debug("Failed to allocate memory"); + close(io->fd); + unlink(path); + return -1; + } + io__init(io, io->fd, io->buf, buf_size); + return 0; +} + +static void cleanup_test(char path[PATH_MAX], struct io *io) +{ + free(io->buf); + close(io->fd); + unlink(path); +} + +static int do_test_get_char(const char *test_string, size_t buf_size) +{ + char path[PATH_MAX]; + struct io io; + int ch, ret = 0; + size_t i; + + if (setup_test(path, test_string, buf_size, &io)) + return -1; + + for (i = 0; i < strlen(test_string); i++) { + ch = io__get_char(&io); + + EXPECT_EQUAL(ch, test_string[i]); + EXPECT_EQUAL(io.eof, false); + } + ch = io__get_char(&io); + EXPECT_EQUAL(ch, -1); + EXPECT_EQUAL(io.eof, true); + + cleanup_test(path, &io); + return ret; +} + +static int test_get_char(void) +{ + int i, ret = 0; + size_t j; + + static const char *const test_strings[] = { + "12345678abcdef90", + "a\nb\nc\nd\n", + "\a\b\t\v\f\r", + }; + for (i = 0; i <= 10; i++) { + for (j = 0; j < ARRAY_SIZE(test_strings); j++) { + if (do_test_get_char(test_strings[j], 1 << i)) + ret = -1; + } + } + return ret; +} + +static int do_test_get_hex(const char *test_string, + __u64 val1, int ch1, + __u64 val2, int ch2, + __u64 val3, int ch3, + bool end_eof) +{ + char path[PATH_MAX]; + struct io io; + int ch, ret = 0; + __u64 hex; + + if (setup_test(path, test_string, 4, &io)) + return -1; + + ch = io__get_hex(&io, &hex); + EXPECT_EQUAL64(hex, val1); + EXPECT_EQUAL(ch, ch1); + + ch = io__get_hex(&io, &hex); + EXPECT_EQUAL64(hex, val2); + EXPECT_EQUAL(ch, ch2); + + ch = io__get_hex(&io, &hex); + EXPECT_EQUAL64(hex, val3); + EXPECT_EQUAL(ch, ch3); + + EXPECT_EQUAL(io.eof, end_eof); + + cleanup_test(path, &io); + return ret; +} + +static int test_get_hex(void) +{ + int ret = 0; + + if (do_test_get_hex("12345678abcdef90", + 0x12345678abcdef90, -1, + 0, -1, + 0, -1, + true)) + ret = -1; + + if (do_test_get_hex("1\n2\n3\n", + 1, '\n', + 2, '\n', + 3, '\n', + false)) + ret = -1; + + if (do_test_get_hex("12345678ABCDEF90;a;b", + 0x12345678abcdef90, ';', + 0xa, ';', + 0xb, -1, + true)) + ret = -1; + + if (do_test_get_hex("0x1x2x", + 0, 'x', + 1, 'x', + 2, 'x', + false)) + ret = -1; + + if (do_test_get_hex("x1x", + 0, -2, + 1, 'x', + 0, -1, + true)) + ret = -1; + + if (do_test_get_hex("10000000000000000000000000000abcdefgh99i", + 0xabcdef, 'g', + 0, -2, + 0x99, 'i', + false)) + ret = -1; + + return ret; +} + +static int do_test_get_dec(const char *test_string, + __u64 val1, int ch1, + __u64 val2, int ch2, + __u64 val3, int ch3, + bool end_eof) +{ + char path[PATH_MAX]; + struct io io; + int ch, ret = 0; + __u64 dec; + + if (setup_test(path, test_string, 4, &io)) + return -1; + + ch = io__get_dec(&io, &dec); + EXPECT_EQUAL64(dec, val1); + EXPECT_EQUAL(ch, ch1); + + ch = io__get_dec(&io, &dec); + EXPECT_EQUAL64(dec, val2); + EXPECT_EQUAL(ch, ch2); + + ch = io__get_dec(&io, &dec); + EXPECT_EQUAL64(dec, val3); + EXPECT_EQUAL(ch, ch3); + + EXPECT_EQUAL(io.eof, end_eof); + + cleanup_test(path, &io); + return ret; +} + +static int test_get_dec(void) +{ + int ret = 0; + + if (do_test_get_dec("12345678abcdef90", + 12345678, 'a', + 0, -2, + 0, -2, + false)) + ret = -1; + + if (do_test_get_dec("1\n2\n3\n", + 1, '\n', + 2, '\n', + 3, '\n', + false)) + ret = -1; + + if (do_test_get_dec("12345678;1;2", + 12345678, ';', + 1, ';', + 2, -1, + true)) + ret = -1; + + if (do_test_get_dec("0x1x2x", + 0, 'x', + 1, 'x', + 2, 'x', + false)) + ret = -1; + + if (do_test_get_dec("x1x", + 0, -2, + 1, 'x', + 0, -1, + true)) + ret = -1; + + if (do_test_get_dec("10000000000000000000000000000000000000000000000000000000000123456789ab99c", + 123456789, 'a', + 0, -2, + 99, 'c', + false)) + ret = -1; + + return ret; +} + +int test__api_io(struct test *test __maybe_unused, + int subtest __maybe_unused) +{ + int ret = 0; + + if (test_get_char()) + ret = TEST_FAIL; + if (test_get_hex()) + ret = TEST_FAIL; + if (test_get_dec()) + ret = TEST_FAIL; + return ret; +} diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c new file mode 100644 index 000000000..ec972e089 --- /dev/null +++ b/tools/perf/tests/attr.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * The struct perf_event_attr test support. + * + * This test is embedded inside into perf directly and is governed + * by the PERF_TEST_ATTR environment variable and hook inside + * sys_perf_event_open function. + * + * The general idea is to store 'struct perf_event_attr' details for + * each event created within single perf command. Each event details + * are stored into separate text file. Once perf command is finished + * these files can be checked for values we expect for command. + * + * Besides 'struct perf_event_attr' values we also store 'fd' and + * 'group_fd' values to allow checking for groups created. + * + * This all is triggered by setting PERF_TEST_ATTR environment variable. + * It must contain name of existing directory with access and write + * permissions. All the event text files are stored there. + */ + +#include <debug.h> +#include <errno.h> +#include <inttypes.h> +#include <stdlib.h> +#include <stdio.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <sys/param.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <subcmd/exec-cmd.h> +#include "event.h" +#include "util.h" +#include "tests.h" + +#define ENV "PERF_TEST_ATTR" + +static char *dir; +static bool ready; + +void test_attr__init(void) +{ + dir = getenv(ENV); + test_attr__enabled = (dir != NULL); +} + +#define BUFSIZE 1024 + +#define __WRITE_ASS(str, fmt, data) \ +do { \ + char buf[BUFSIZE]; \ + size_t size; \ + \ + size = snprintf(buf, BUFSIZE, #str "=%"fmt "\n", data); \ + if (1 != fwrite(buf, size, 1, file)) { \ + perror("test attr - failed to write event file"); \ + fclose(file); \ + return -1; \ + } \ + \ +} while (0) + +#define WRITE_ASS(field, fmt) __WRITE_ASS(field, fmt, attr->field) + +static int store_event(struct perf_event_attr *attr, pid_t pid, int cpu, + int fd, int group_fd, unsigned long flags) +{ + FILE *file; + char path[PATH_MAX]; + + if (!ready) + return 0; + + snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir, + attr->type, attr->config, fd); + + file = fopen(path, "w+"); + if (!file) { + perror("test attr - failed to open event file"); + return -1; + } + + if (fprintf(file, "[event-%d-%llu-%d]\n", + attr->type, attr->config, fd) < 0) { + perror("test attr - failed to write event file"); + fclose(file); + return -1; + } + + /* syscall arguments */ + __WRITE_ASS(fd, "d", fd); + __WRITE_ASS(group_fd, "d", group_fd); + __WRITE_ASS(cpu, "d", cpu); + __WRITE_ASS(pid, "d", pid); + __WRITE_ASS(flags, "lu", flags); + + /* struct perf_event_attr */ + WRITE_ASS(type, PRIu32); + WRITE_ASS(size, PRIu32); + WRITE_ASS(config, "llu"); + WRITE_ASS(sample_period, "llu"); + WRITE_ASS(sample_type, "llu"); + WRITE_ASS(read_format, "llu"); + WRITE_ASS(disabled, "d"); + WRITE_ASS(inherit, "d"); + WRITE_ASS(pinned, "d"); + WRITE_ASS(exclusive, "d"); + WRITE_ASS(exclude_user, "d"); + WRITE_ASS(exclude_kernel, "d"); + WRITE_ASS(exclude_hv, "d"); + WRITE_ASS(exclude_idle, "d"); + WRITE_ASS(mmap, "d"); + WRITE_ASS(comm, "d"); + WRITE_ASS(freq, "d"); + WRITE_ASS(inherit_stat, "d"); + WRITE_ASS(enable_on_exec, "d"); + WRITE_ASS(task, "d"); + WRITE_ASS(watermark, "d"); + WRITE_ASS(precise_ip, "d"); + WRITE_ASS(mmap_data, "d"); + WRITE_ASS(sample_id_all, "d"); + WRITE_ASS(exclude_host, "d"); + WRITE_ASS(exclude_guest, "d"); + WRITE_ASS(exclude_callchain_kernel, "d"); + WRITE_ASS(exclude_callchain_user, "d"); + WRITE_ASS(mmap2, "d"); + WRITE_ASS(comm_exec, "d"); + WRITE_ASS(context_switch, "d"); + WRITE_ASS(write_backward, "d"); + WRITE_ASS(namespaces, "d"); + WRITE_ASS(use_clockid, "d"); + WRITE_ASS(wakeup_events, PRIu32); + WRITE_ASS(bp_type, PRIu32); + WRITE_ASS(config1, "llu"); + WRITE_ASS(config2, "llu"); + WRITE_ASS(branch_sample_type, "llu"); + WRITE_ASS(sample_regs_user, "llu"); + WRITE_ASS(sample_stack_user, PRIu32); + + fclose(file); + return 0; +} + +void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu, + int fd, int group_fd, unsigned long flags) +{ + int errno_saved = errno; + + if ((fd != -1) && store_event(attr, pid, cpu, fd, group_fd, flags)) { + pr_err("test attr FAILED"); + exit(128); + } + + errno = errno_saved; +} + +void test_attr__ready(void) +{ + if (unlikely(test_attr__enabled) && !ready) + ready = true; +} + +static int run_dir(const char *d, const char *perf) +{ + char v[] = "-vvvvv"; + int vcnt = min(verbose, (int) sizeof(v) - 1); + char cmd[3*PATH_MAX]; + + if (verbose > 0) + vcnt++; + + scnprintf(cmd, 3*PATH_MAX, PYTHON " %s/attr.py -d %s/attr/ -p %s %.*s", + d, d, perf, vcnt, v); + + return system(cmd) ? TEST_FAIL : TEST_OK; +} + +int test__attr(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct stat st; + char path_perf[PATH_MAX]; + char path_dir[PATH_MAX]; + + /* First try development tree tests. */ + if (!lstat("./tests", &st)) + return run_dir("./tests", "./perf"); + + /* Then installed path. */ + snprintf(path_dir, PATH_MAX, "%s/tests", get_argv_exec_path()); + snprintf(path_perf, PATH_MAX, "%s/perf", BINDIR); + + if (!lstat(path_dir, &st) && + !lstat(path_perf, &st)) + return run_dir(path_dir, path_perf); + + return TEST_SKIP; +} diff --git a/tools/perf/tests/attr.py b/tools/perf/tests/attr.py new file mode 100644 index 000000000..cb39ac46b --- /dev/null +++ b/tools/perf/tests/attr.py @@ -0,0 +1,397 @@ +# SPDX-License-Identifier: GPL-2.0 + +from __future__ import print_function + +import os +import sys +import glob +import optparse +import tempfile +import logging +import shutil + +try: + import configparser +except ImportError: + import ConfigParser as configparser + +def data_equal(a, b): + # Allow multiple values in assignment separated by '|' + a_list = a.split('|') + b_list = b.split('|') + + for a_item in a_list: + for b_item in b_list: + if (a_item == b_item): + return True + elif (a_item == '*') or (b_item == '*'): + return True + + return False + +class Fail(Exception): + def __init__(self, test, msg): + self.msg = msg + self.test = test + def getMsg(self): + return '\'%s\' - %s' % (self.test.path, self.msg) + +class Notest(Exception): + def __init__(self, test, arch): + self.arch = arch + self.test = test + def getMsg(self): + return '[%s] \'%s\'' % (self.arch, self.test.path) + +class Unsup(Exception): + def __init__(self, test): + self.test = test + def getMsg(self): + return '\'%s\'' % self.test.path + +class Event(dict): + terms = [ + 'cpu', + 'flags', + 'type', + 'size', + 'config', + 'sample_period', + 'sample_type', + 'read_format', + 'disabled', + 'inherit', + 'pinned', + 'exclusive', + 'exclude_user', + 'exclude_kernel', + 'exclude_hv', + 'exclude_idle', + 'mmap', + 'comm', + 'freq', + 'inherit_stat', + 'enable_on_exec', + 'task', + 'watermark', + 'precise_ip', + 'mmap_data', + 'sample_id_all', + 'exclude_host', + 'exclude_guest', + 'exclude_callchain_kernel', + 'exclude_callchain_user', + 'wakeup_events', + 'bp_type', + 'config1', + 'config2', + 'branch_sample_type', + 'sample_regs_user', + 'sample_stack_user', + ] + + def add(self, data): + for key, val in data: + log.debug(" %s = %s" % (key, val)) + self[key] = val + + def __init__(self, name, data, base): + log.debug(" Event %s" % name); + self.name = name; + self.group = '' + self.add(base) + self.add(data) + + def equal(self, other): + for t in Event.terms: + log.debug(" [%s] %s %s" % (t, self[t], other[t])); + if t not in self or t not in other: + return False + if not data_equal(self[t], other[t]): + return False + return True + + def optional(self): + if 'optional' in self and self['optional'] == '1': + return True + return False + + def diff(self, other): + for t in Event.terms: + if t not in self or t not in other: + continue + if not data_equal(self[t], other[t]): + log.warning("expected %s=%s, got %s" % (t, self[t], other[t])) + +# Test file description needs to have following sections: +# [config] +# - just single instance in file +# - needs to specify: +# 'command' - perf command name +# 'args' - special command arguments +# 'ret' - expected command return value (0 by default) +# 'arch' - architecture specific test (optional) +# comma separated list, ! at the beginning +# negates it. +# +# [eventX:base] +# - one or multiple instances in file +# - expected values assignments +class Test(object): + def __init__(self, path, options): + parser = configparser.SafeConfigParser() + parser.read(path) + + log.warning("running '%s'" % path) + + self.path = path + self.test_dir = options.test_dir + self.perf = options.perf + self.command = parser.get('config', 'command') + self.args = parser.get('config', 'args') + + try: + self.ret = parser.get('config', 'ret') + except: + self.ret = 0 + + try: + self.arch = parser.get('config', 'arch') + log.warning("test limitation '%s'" % self.arch) + except: + self.arch = '' + + self.expect = {} + self.result = {} + log.debug(" loading expected events"); + self.load_events(path, self.expect) + + def is_event(self, name): + if name.find("event") == -1: + return False + else: + return True + + def skip_test(self, myarch): + # If architecture not set always run test + if self.arch == '': + # log.warning("test for arch %s is ok" % myarch) + return False + + # Allow multiple values in assignment separated by ',' + arch_list = self.arch.split(',') + + # Handle negated list such as !s390x,ppc + if arch_list[0][0] == '!': + arch_list[0] = arch_list[0][1:] + log.warning("excluded architecture list %s" % arch_list) + for arch_item in arch_list: + # log.warning("test for %s arch is %s" % (arch_item, myarch)) + if arch_item == myarch: + return True + return False + + for arch_item in arch_list: + # log.warning("test for architecture '%s' current '%s'" % (arch_item, myarch)) + if arch_item == myarch: + return False + return True + + def load_events(self, path, events): + parser_event = configparser.SafeConfigParser() + parser_event.read(path) + + # The event record section header contains 'event' word, + # optionaly followed by ':' allowing to load 'parent + # event' first as a base + for section in filter(self.is_event, parser_event.sections()): + + parser_items = parser_event.items(section); + base_items = {} + + # Read parent event if there's any + if (':' in section): + base = section[section.index(':') + 1:] + parser_base = configparser.SafeConfigParser() + parser_base.read(self.test_dir + '/' + base) + base_items = parser_base.items('event') + + e = Event(section, parser_items, base_items) + events[section] = e + + def run_cmd(self, tempdir): + junk1, junk2, junk3, junk4, myarch = (os.uname()) + + if self.skip_test(myarch): + raise Notest(self, myarch) + + cmd = "PERF_TEST_ATTR=%s %s %s -o %s/perf.data %s" % (tempdir, + self.perf, self.command, tempdir, self.args) + ret = os.WEXITSTATUS(os.system(cmd)) + + log.info(" '%s' ret '%s', expected '%s'" % (cmd, str(ret), str(self.ret))) + + if not data_equal(str(ret), str(self.ret)): + raise Unsup(self) + + def compare(self, expect, result): + match = {} + + log.debug(" compare"); + + # For each expected event find all matching + # events in result. Fail if there's not any. + for exp_name, exp_event in expect.items(): + exp_list = [] + res_event = {} + log.debug(" matching [%s]" % exp_name) + for res_name, res_event in result.items(): + log.debug(" to [%s]" % res_name) + if (exp_event.equal(res_event)): + exp_list.append(res_name) + log.debug(" ->OK") + else: + log.debug(" ->FAIL"); + + log.debug(" match: [%s] matches %s" % (exp_name, str(exp_list))) + + # we did not any matching event - fail + if not exp_list: + if exp_event.optional(): + log.debug(" %s does not match, but is optional" % exp_name) + else: + if not res_event: + log.debug(" res_event is empty"); + else: + exp_event.diff(res_event) + raise Fail(self, 'match failure'); + + match[exp_name] = exp_list + + # For each defined group in the expected events + # check we match the same group in the result. + for exp_name, exp_event in expect.items(): + group = exp_event.group + + if (group == ''): + continue + + for res_name in match[exp_name]: + res_group = result[res_name].group + if res_group not in match[group]: + raise Fail(self, 'group failure') + + log.debug(" group: [%s] matches group leader %s" % + (exp_name, str(match[group]))) + + log.debug(" matched") + + def resolve_groups(self, events): + for name, event in events.items(): + group_fd = event['group_fd']; + if group_fd == '-1': + continue; + + for iname, ievent in events.items(): + if (ievent['fd'] == group_fd): + event.group = iname + log.debug('[%s] has group leader [%s]' % (name, iname)) + break; + + def run(self): + tempdir = tempfile.mkdtemp(); + + try: + # run the test script + self.run_cmd(tempdir); + + # load events expectation for the test + log.debug(" loading result events"); + for f in glob.glob(tempdir + '/event*'): + self.load_events(f, self.result); + + # resolve group_fd to event names + self.resolve_groups(self.expect); + self.resolve_groups(self.result); + + # do the expectation - results matching - both ways + self.compare(self.expect, self.result) + self.compare(self.result, self.expect) + + finally: + # cleanup + shutil.rmtree(tempdir) + + +def run_tests(options): + for f in glob.glob(options.test_dir + '/' + options.test): + try: + Test(f, options).run() + except Unsup as obj: + log.warning("unsupp %s" % obj.getMsg()) + except Notest as obj: + log.warning("skipped %s" % obj.getMsg()) + +def setup_log(verbose): + global log + level = logging.CRITICAL + + if verbose == 1: + level = logging.WARNING + if verbose == 2: + level = logging.INFO + if verbose >= 3: + level = logging.DEBUG + + log = logging.getLogger('test') + log.setLevel(level) + ch = logging.StreamHandler() + ch.setLevel(level) + formatter = logging.Formatter('%(message)s') + ch.setFormatter(formatter) + log.addHandler(ch) + +USAGE = '''%s [OPTIONS] + -d dir # tests dir + -p path # perf binary + -t test # single test + -v # verbose level +''' % sys.argv[0] + +def main(): + parser = optparse.OptionParser(usage=USAGE) + + parser.add_option("-t", "--test", + action="store", type="string", dest="test") + parser.add_option("-d", "--test-dir", + action="store", type="string", dest="test_dir") + parser.add_option("-p", "--perf", + action="store", type="string", dest="perf") + parser.add_option("-v", "--verbose", + default=0, action="count", dest="verbose") + + options, args = parser.parse_args() + if args: + parser.error('FAILED wrong arguments %s' % ' '.join(args)) + return -1 + + setup_log(options.verbose) + + if not options.test_dir: + print('FAILED no -d option specified') + sys.exit(-1) + + if not options.test: + options.test = 'test*' + + try: + run_tests(options) + + except Fail as obj: + print("FAILED %s" % obj.getMsg()) + sys.exit(-1) + + sys.exit(0) + +if __name__ == '__main__': + main() diff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README new file mode 100644 index 000000000..a36f49fb4 --- /dev/null +++ b/tools/perf/tests/attr/README @@ -0,0 +1,66 @@ +The struct perf_event_attr test (attr tests) support +==================================================== +This testing support is embedded into perf directly and is governed +by the PERF_TEST_ATTR environment variable and hook inside the +sys_perf_event_open function. + +The general idea is to store 'struct perf_event_attr' details for +each event created within single perf command. Each event details +are stored into separate text file. Once perf command is finished +these files are checked for values we expect for command. + +The attr tests consist of following parts: + +tests/attr.c +------------ +This is the sys_perf_event_open hook implementation. The hook +is triggered when the PERF_TEST_ATTR environment variable is +defined. It must contain name of existing directory with access +and write permissions. + +For each sys_perf_event_open call event details are stored in +separate file. Besides 'struct perf_event_attr' values we also +store 'fd' and 'group_fd' values to allow checking for groups. + +tests/attr.py +------------- +This is the python script that does all the hard work. It reads +the test definition, executes it and checks results. + +tests/attr/ +----------- +Directory containing all attr test definitions. +Following tests are defined (with perf commands): + + perf record kill (test-record-basic) + perf record -b kill (test-record-branch-any) + perf record -j any kill (test-record-branch-filter-any) + perf record -j any_call kill (test-record-branch-filter-any_call) + perf record -j any_ret kill (test-record-branch-filter-any_ret) + perf record -j hv kill (test-record-branch-filter-hv) + perf record -j ind_call kill (test-record-branch-filter-ind_call) + perf record -j k kill (test-record-branch-filter-k) + perf record -j u kill (test-record-branch-filter-u) + perf record -c 123 kill (test-record-count) + perf record -d kill (test-record-data) + perf record -F 100 kill (test-record-freq) + perf record -g kill (test-record-graph-default) + perf record --call-graph dwarf kill (test-record-graph-dwarf) + perf record --call-graph fp kill (test-record-graph-fp) + perf record --group -e cycles,instructions kill (test-record-group) + perf record -e '{cycles,instructions}' kill (test-record-group1) + perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2) + perf record -D kill (test-record-no-delay) + perf record -i kill (test-record-no-inherit) + perf record -n kill (test-record-no-samples) + perf record -c 100 -P kill (test-record-period) + perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period) + perf record -R kill (test-record-raw) + perf stat -e cycles kill (test-stat-basic) + perf stat kill (test-stat-default) + perf stat -d kill (test-stat-detailed-1) + perf stat -dd kill (test-stat-detailed-2) + perf stat -ddd kill (test-stat-detailed-3) + perf stat --group -e cycles,instructions kill (test-stat-group) + perf stat -e '{cycles,instructions}' kill (test-stat-group1) + perf stat -i -e cycles kill (test-stat-no-inherit) diff --git a/tools/perf/tests/attr/base-record b/tools/perf/tests/attr/base-record new file mode 100644 index 000000000..645009c08 --- /dev/null +++ b/tools/perf/tests/attr/base-record @@ -0,0 +1,41 @@ +[event] +fd=1 +group_fd=-1 +# 0 or PERF_FLAG_FD_CLOEXEC flag +flags=0|8 +cpu=* +type=0|1 +size=120 +config=0 +sample_period=* +sample_type=263 +read_format=0|4 +disabled=1 +inherit=1 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=0|1 +exclude_hv=0 +exclude_idle=0 +mmap=1 +comm=1 +freq=1 +inherit_stat=0 +enable_on_exec=1 +task=1 +watermark=0 +precise_ip=0|1|2|3 +mmap_data=0 +sample_id_all=1 +exclude_host=0|1 +exclude_guest=0|1 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/attr/base-stat b/tools/perf/tests/attr/base-stat new file mode 100644 index 000000000..b0f42c348 --- /dev/null +++ b/tools/perf/tests/attr/base-stat @@ -0,0 +1,41 @@ +[event] +fd=1 +group_fd=-1 +# 0 or PERF_FLAG_FD_CLOEXEC flag +flags=0|8 +cpu=* +type=0 +size=120 +config=0 +sample_period=0 +sample_type=65536 +read_format=3 +disabled=1 +inherit=1 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=0|1 +exclude_hv=0 +exclude_idle=0 +mmap=0 +comm=0 +freq=0 +inherit_stat=0 +enable_on_exec=1 +task=0 +watermark=0 +precise_ip=0 +mmap_data=0 +sample_id_all=0 +exclude_host=0|1 +exclude_guest=0|1 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/attr/system-wide-dummy b/tools/perf/tests/attr/system-wide-dummy new file mode 100644 index 000000000..eba723cc0 --- /dev/null +++ b/tools/perf/tests/attr/system-wide-dummy @@ -0,0 +1,50 @@ +# Event added by system-wide or CPU perf-record to handle the race of +# processes starting while /proc is processed. +[event] +fd=1 +group_fd=-1 +cpu=* +pid=-1 +flags=8 +type=1 +size=120 +config=9 +sample_period=4000 +sample_type=455 +read_format=4 +# Event will be enabled right away. +disabled=0 +inherit=1 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=0 +exclude_hv=0 +exclude_idle=0 +mmap=1 +comm=1 +freq=1 +inherit_stat=0 +enable_on_exec=0 +task=1 +watermark=0 +precise_ip=0 +mmap_data=0 +sample_id_all=1 +exclude_host=0 +exclude_guest=0 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +mmap2=1 +comm_exec=1 +context_switch=0 +write_backward=0 +namespaces=0 +use_clockid=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/attr/test-record-C0 b/tools/perf/tests/attr/test-record-C0 new file mode 100644 index 000000000..317730b90 --- /dev/null +++ b/tools/perf/tests/attr/test-record-C0 @@ -0,0 +1,22 @@ +[config] +command = record +args = --no-bpf-event -C 0 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +cpu=0 + +# no enable on exec for CPU attached +enable_on_exec=0 + +# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | +# PERF_SAMPLE_ID | PERF_SAMPLE_PERIOD +# + PERF_SAMPLE_CPU added by -C 0 +sample_type=455 + +# Dummy event handles mmaps, comm and task. +mmap=0 +comm=0 +task=0 + +[event:system-wide-dummy] diff --git a/tools/perf/tests/attr/test-record-basic b/tools/perf/tests/attr/test-record-basic new file mode 100644 index 000000000..b0ca42a5e --- /dev/null +++ b/tools/perf/tests/attr/test-record-basic @@ -0,0 +1,6 @@ +[config] +command = record +args = --no-bpf-event kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] diff --git a/tools/perf/tests/attr/test-record-branch-any b/tools/perf/tests/attr/test-record-branch-any new file mode 100644 index 000000000..1a99b3ce6 --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-any @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -b kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-any b/tools/perf/tests/attr/test-record-branch-filter-any new file mode 100644 index 000000000..709768b50 --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-any @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j any kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-any_call b/tools/perf/tests/attr/test-record-branch-filter-any_call new file mode 100644 index 000000000..f943221f7 --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-any_call @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j any_call kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=16 diff --git a/tools/perf/tests/attr/test-record-branch-filter-any_ret b/tools/perf/tests/attr/test-record-branch-filter-any_ret new file mode 100644 index 000000000..fd4f5b415 --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-any_ret @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j any_ret kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=32 diff --git a/tools/perf/tests/attr/test-record-branch-filter-hv b/tools/perf/tests/attr/test-record-branch-filter-hv new file mode 100644 index 000000000..4e52d685e --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-hv @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j hv kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-ind_call b/tools/perf/tests/attr/test-record-branch-filter-ind_call new file mode 100644 index 000000000..e08c6ab37 --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-ind_call @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j ind_call kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=64 diff --git a/tools/perf/tests/attr/test-record-branch-filter-k b/tools/perf/tests/attr/test-record-branch-filter-k new file mode 100644 index 000000000..b4b98f84f --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-k @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j k kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-u b/tools/perf/tests/attr/test-record-branch-filter-u new file mode 100644 index 000000000..fb9610edb --- /dev/null +++ b/tools/perf/tests/attr/test-record-branch-filter-u @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j u kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-count b/tools/perf/tests/attr/test-record-count new file mode 100644 index 000000000..5e9b9019d --- /dev/null +++ b/tools/perf/tests/attr/test-record-count @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event -c 123 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=123 +sample_type=7 +freq=0 diff --git a/tools/perf/tests/attr/test-record-data b/tools/perf/tests/attr/test-record-data new file mode 100644 index 000000000..a99bb1314 --- /dev/null +++ b/tools/perf/tests/attr/test-record-data @@ -0,0 +1,10 @@ +[config] +command = record +args = --no-bpf-event -d kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +# sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | +# PERF_SAMPLE_ADDR | PERF_SAMPLE_PERIOD | PERF_SAMPLE_DATA_SRC +sample_type=33039 +mmap_data=1 diff --git a/tools/perf/tests/attr/test-record-freq b/tools/perf/tests/attr/test-record-freq new file mode 100644 index 000000000..89e29f6b2 --- /dev/null +++ b/tools/perf/tests/attr/test-record-freq @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -F 100 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=100 diff --git a/tools/perf/tests/attr/test-record-graph-default b/tools/perf/tests/attr/test-record-graph-default new file mode 100644 index 000000000..5d8234d50 --- /dev/null +++ b/tools/perf/tests/attr/test-record-graph-default @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -g kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=295 diff --git a/tools/perf/tests/attr/test-record-graph-dwarf b/tools/perf/tests/attr/test-record-graph-dwarf new file mode 100644 index 000000000..ae92061d6 --- /dev/null +++ b/tools/perf/tests/attr/test-record-graph-dwarf @@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event --call-graph dwarf -- kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=45359 +exclude_callchain_user=1 +sample_stack_user=8192 +# TODO different for each arch, no support for that now +sample_regs_user=* +mmap_data=1 diff --git a/tools/perf/tests/attr/test-record-graph-fp b/tools/perf/tests/attr/test-record-graph-fp new file mode 100644 index 000000000..5630521c0 --- /dev/null +++ b/tools/perf/tests/attr/test-record-graph-fp @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=295 diff --git a/tools/perf/tests/attr/test-record-group b/tools/perf/tests/attr/test-record-group new file mode 100644 index 000000000..14ee60fd3 --- /dev/null +++ b/tools/perf/tests/attr/test-record-group @@ -0,0 +1,22 @@ +[config] +command = record +args = --no-bpf-event --group -e cycles,instructions kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-record] +fd=1 +group_fd=-1 +sample_type=327 +read_format=4 + +[event-2:base-record] +fd=2 +group_fd=1 +config=1 +sample_type=327 +read_format=4 +mmap=0 +comm=0 +task=0 +enable_on_exec=0 +disabled=0 diff --git a/tools/perf/tests/attr/test-record-group-sampling b/tools/perf/tests/attr/test-record-group-sampling new file mode 100644 index 000000000..300b9f7e6 --- /dev/null +++ b/tools/perf/tests/attr/test-record-group-sampling @@ -0,0 +1,39 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-record] +fd=1 +group_fd=-1 +sample_type=343 +read_format=12 +inherit=0 + +[event-2:base-record] +fd=2 +group_fd=1 + +# cache-misses +type=0 +config=3 + +# default | PERF_SAMPLE_READ +sample_type=343 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP +read_format=12 +task=0 +mmap=0 +comm=0 +enable_on_exec=0 +disabled=0 + +# inherit is disabled for group sampling +inherit=0 + +# sampling disabled +sample_freq=0 +sample_period=0 +freq=0 +write_backward=0 diff --git a/tools/perf/tests/attr/test-record-group1 b/tools/perf/tests/attr/test-record-group1 new file mode 100644 index 000000000..3ffe246e0 --- /dev/null +++ b/tools/perf/tests/attr/test-record-group1 @@ -0,0 +1,23 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles,instructions}' kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-record] +fd=1 +group_fd=-1 +sample_type=327 +read_format=4 + +[event-2:base-record] +fd=2 +group_fd=1 +type=0 +config=1 +sample_type=327 +read_format=4 +mmap=0 +comm=0 +task=0 +enable_on_exec=0 +disabled=0 diff --git a/tools/perf/tests/attr/test-record-group2 b/tools/perf/tests/attr/test-record-group2 new file mode 100644 index 000000000..6b9f8d182 --- /dev/null +++ b/tools/perf/tests/attr/test-record-group2 @@ -0,0 +1,29 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-record] +fd=1 +group_fd=-1 +config=0|1 +sample_period=1234000 +sample_type=87 +read_format=12 +inherit=0 +freq=0 + +[event-2:base-record] +fd=2 +group_fd=1 +config=0|1 +sample_period=6789000 +sample_type=87 +read_format=12 +disabled=0 +inherit=0 +mmap=0 +comm=0 +freq=0 +enable_on_exec=0 +task=0 diff --git a/tools/perf/tests/attr/test-record-no-buffering b/tools/perf/tests/attr/test-record-no-buffering new file mode 100644 index 000000000..583dcbb07 --- /dev/null +++ b/tools/perf/tests/attr/test-record-no-buffering @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event --no-buffering kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=263 +watermark=0 +wakeup_events=1 diff --git a/tools/perf/tests/attr/test-record-no-inherit b/tools/perf/tests/attr/test-record-no-inherit new file mode 100644 index 000000000..15d1dc162 --- /dev/null +++ b/tools/perf/tests/attr/test-record-no-inherit @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -i kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=263 +inherit=0 diff --git a/tools/perf/tests/attr/test-record-no-samples b/tools/perf/tests/attr/test-record-no-samples new file mode 100644 index 000000000..596fbd6d5 --- /dev/null +++ b/tools/perf/tests/attr/test-record-no-samples @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -n kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=0 diff --git a/tools/perf/tests/attr/test-record-period b/tools/perf/tests/attr/test-record-period new file mode 100644 index 000000000..119101154 --- /dev/null +++ b/tools/perf/tests/attr/test-record-period @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -c 100 -P kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=100 +freq=0 diff --git a/tools/perf/tests/attr/test-record-pfm-period b/tools/perf/tests/attr/test-record-pfm-period new file mode 100644 index 000000000..368f5b814 --- /dev/null +++ b/tools/perf/tests/attr/test-record-pfm-period @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event -c 10000 --pfm-events=cycles:period=77777 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=77777 +sample_type=7 +freq=0 diff --git a/tools/perf/tests/attr/test-record-raw b/tools/perf/tests/attr/test-record-raw new file mode 100644 index 000000000..13a5f7860 --- /dev/null +++ b/tools/perf/tests/attr/test-record-raw @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -R kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=1415 diff --git a/tools/perf/tests/attr/test-stat-C0 b/tools/perf/tests/attr/test-stat-C0 new file mode 100644 index 000000000..a2c76d10b --- /dev/null +++ b/tools/perf/tests/attr/test-stat-C0 @@ -0,0 +1,10 @@ +[config] +command = stat +args = -e cycles -C 0 kill >/dev/null 2>&1 +ret = 1 + +[event:base-stat] +# events are disabled by default when attached to cpu +disabled=1 +enable_on_exec=0 +optional=1 diff --git a/tools/perf/tests/attr/test-stat-basic b/tools/perf/tests/attr/test-stat-basic new file mode 100644 index 000000000..69867d049 --- /dev/null +++ b/tools/perf/tests/attr/test-stat-basic @@ -0,0 +1,7 @@ +[config] +command = stat +args = -e cycles kill >/dev/null 2>&1 +ret = 1 + +[event:base-stat] +optional=1 diff --git a/tools/perf/tests/attr/test-stat-default b/tools/perf/tests/attr/test-stat-default new file mode 100644 index 000000000..d9e99b3f7 --- /dev/null +++ b/tools/perf/tests/attr/test-stat-default @@ -0,0 +1,70 @@ +[config] +command = stat +args = kill >/dev/null 2>&1 +ret = 1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-1 b/tools/perf/tests/attr/test-stat-detailed-1 new file mode 100644 index 000000000..8b04a055d --- /dev/null +++ b/tools/perf/tests/attr/test-stat-detailed-1 @@ -0,0 +1,111 @@ +[config] +command = stat +args = -d kill >/dev/null 2>&1 +ret = 1 + + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event11:base-stat] +fd=11 +type=3 +config=0 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event12:base-stat] +fd=12 +type=3 +config=65536 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event13:base-stat] +fd=13 +type=3 +config=2 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event14:base-stat] +fd=14 +type=3 +config=65538 +optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-2 b/tools/perf/tests/attr/test-stat-detailed-2 new file mode 100644 index 000000000..4fca9f1bf --- /dev/null +++ b/tools/perf/tests/attr/test-stat-detailed-2 @@ -0,0 +1,171 @@ +[config] +command = stat +args = -dd kill >/dev/null 2>&1 +ret = 1 + + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event11:base-stat] +fd=11 +type=3 +config=0 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event12:base-stat] +fd=12 +type=3 +config=65536 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event13:base-stat] +fd=13 +type=3 +config=2 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event14:base-stat] +fd=14 +type=3 +config=65538 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event15:base-stat] +fd=15 +type=3 +config=1 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event16:base-stat] +fd=16 +type=3 +config=65537 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event17:base-stat] +fd=17 +type=3 +config=3 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event18:base-stat] +fd=18 +type=3 +config=65539 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event19:base-stat] +fd=19 +type=3 +config=4 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event20:base-stat] +fd=20 +type=3 +config=65540 +optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-3 b/tools/perf/tests/attr/test-stat-detailed-3 new file mode 100644 index 000000000..4bb58e1c8 --- /dev/null +++ b/tools/perf/tests/attr/test-stat-detailed-3 @@ -0,0 +1,191 @@ +[config] +command = stat +args = -ddd kill >/dev/null 2>&1 +ret = 1 + + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event11:base-stat] +fd=11 +type=3 +config=0 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event12:base-stat] +fd=12 +type=3 +config=65536 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event13:base-stat] +fd=13 +type=3 +config=2 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event14:base-stat] +fd=14 +type=3 +config=65538 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event15:base-stat] +fd=15 +type=3 +config=1 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event16:base-stat] +fd=16 +type=3 +config=65537 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event17:base-stat] +fd=17 +type=3 +config=3 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event18:base-stat] +fd=18 +type=3 +config=65539 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event19:base-stat] +fd=19 +type=3 +config=4 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event20:base-stat] +fd=20 +type=3 +config=65540 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event21:base-stat] +fd=21 +type=3 +config=512 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event22:base-stat] +fd=22 +type=3 +config=66048 +optional=1 diff --git a/tools/perf/tests/attr/test-stat-group b/tools/perf/tests/attr/test-stat-group new file mode 100644 index 000000000..e15d6946e --- /dev/null +++ b/tools/perf/tests/attr/test-stat-group @@ -0,0 +1,17 @@ +[config] +command = stat +args = --group -e cycles,instructions kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-stat] +fd=1 +group_fd=-1 +read_format=3|15 + +[event-2:base-stat] +fd=2 +group_fd=1 +config=1 +disabled=0 +enable_on_exec=0 +read_format=3|15 diff --git a/tools/perf/tests/attr/test-stat-group1 b/tools/perf/tests/attr/test-stat-group1 new file mode 100644 index 000000000..174675112 --- /dev/null +++ b/tools/perf/tests/attr/test-stat-group1 @@ -0,0 +1,17 @@ +[config] +command = stat +args = -e '{cycles,instructions}' kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-stat] +fd=1 +group_fd=-1 +read_format=3|15 + +[event-2:base-stat] +fd=2 +group_fd=1 +config=1 +disabled=0 +enable_on_exec=0 +read_format=3|15 diff --git a/tools/perf/tests/attr/test-stat-no-inherit b/tools/perf/tests/attr/test-stat-no-inherit new file mode 100644 index 000000000..924fbb930 --- /dev/null +++ b/tools/perf/tests/attr/test-stat-no-inherit @@ -0,0 +1,8 @@ +[config] +command = stat +args = -i -e cycles kill >/dev/null 2>&1 +ret = 1 + +[event:base-stat] +inherit=0 +optional=1 diff --git a/tools/perf/tests/backward-ring-buffer.c b/tools/perf/tests/backward-ring-buffer.c new file mode 100644 index 000000000..15cea518f --- /dev/null +++ b/tools/perf/tests/backward-ring-buffer.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test backward bit in event attribute, read ring buffer from end to + * beginning + */ + +#include <evlist.h> +#include <sys/prctl.h> +#include "record.h" +#include "tests.h" +#include "debug.h" +#include "parse-events.h" +#include "util/mmap.h" +#include <errno.h> +#include <linux/string.h> +#include <perf/mmap.h> + +#define NR_ITERS 111 + +static void testcase(void) +{ + int i; + + for (i = 0; i < NR_ITERS; i++) { + char proc_name[15]; + + snprintf(proc_name, sizeof(proc_name), "p:%d\n", i); + prctl(PR_SET_NAME, proc_name); + } +} + +static int count_samples(struct evlist *evlist, int *sample_count, + int *comm_count) +{ + int i; + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + struct mmap *map = &evlist->overwrite_mmap[i]; + union perf_event *event; + + perf_mmap__read_init(&map->core); + while ((event = perf_mmap__read_event(&map->core)) != NULL) { + const u32 type = event->header.type; + + switch (type) { + case PERF_RECORD_SAMPLE: + (*sample_count)++; + break; + case PERF_RECORD_COMM: + (*comm_count)++; + break; + default: + pr_err("Unexpected record of type %d\n", type); + return TEST_FAIL; + } + } + perf_mmap__read_done(&map->core); + } + return TEST_OK; +} + +static int do_test(struct evlist *evlist, int mmap_pages, + int *sample_count, int *comm_count) +{ + int err; + char sbuf[STRERR_BUFSIZE]; + + err = evlist__mmap(evlist, mmap_pages); + if (err < 0) { + pr_debug("evlist__mmap: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + return TEST_FAIL; + } + + evlist__enable(evlist); + testcase(); + evlist__disable(evlist); + + err = count_samples(evlist, sample_count, comm_count); + evlist__munmap(evlist); + return err; +} + + +int test__backward_ring_buffer(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int ret = TEST_SKIP, err, sample_count = 0, comm_count = 0; + char pid[16], sbuf[STRERR_BUFSIZE]; + struct evlist *evlist; + struct evsel *evsel __maybe_unused; + struct parse_events_error parse_error; + struct record_opts opts = { + .target = { + .uid = UINT_MAX, + .uses_mmap = true, + }, + .freq = 0, + .mmap_pages = 256, + .default_interval = 1, + }; + + snprintf(pid, sizeof(pid), "%d", getpid()); + pid[sizeof(pid) - 1] = '\0'; + opts.target.tid = opts.target.pid = pid; + + evlist = evlist__new(); + if (!evlist) { + pr_debug("Not enough memory to create evlist\n"); + return TEST_FAIL; + } + + err = perf_evlist__create_maps(evlist, &opts.target); + if (err < 0) { + pr_debug("Not enough memory to create thread/cpu maps\n"); + goto out_delete_evlist; + } + + bzero(&parse_error, sizeof(parse_error)); + /* + * Set backward bit, ring buffer should be writing from end. Record + * it in aux evlist + */ + err = parse_events(evlist, "syscalls:sys_enter_prctl/overwrite/", &parse_error); + if (err) { + pr_debug("Failed to parse tracepoint event, try use root\n"); + ret = TEST_SKIP; + goto out_delete_evlist; + } + + perf_evlist__config(evlist, &opts, NULL); + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + ret = TEST_FAIL; + err = do_test(evlist, opts.mmap_pages, &sample_count, + &comm_count); + if (err != TEST_OK) + goto out_delete_evlist; + + if ((sample_count != NR_ITERS) || (comm_count != NR_ITERS)) { + pr_err("Unexpected counter: sample_count=%d, comm_count=%d\n", + sample_count, comm_count); + goto out_delete_evlist; + } + + evlist__close(evlist); + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + err = do_test(evlist, 1, &sample_count, &comm_count); + if (err != TEST_OK) + goto out_delete_evlist; + + ret = TEST_OK; +out_delete_evlist: + evlist__delete(evlist); + return ret; +} diff --git a/tools/perf/tests/bitmap.c b/tools/perf/tests/bitmap.c new file mode 100644 index 000000000..96c137360 --- /dev/null +++ b/tools/perf/tests/bitmap.c @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/bitmap.h> +#include <perf/cpumap.h> +#include <internal/cpumap.h> +#include "tests.h" +#include "debug.h" + +#define NBITS 100 + +static unsigned long *get_bitmap(const char *str, int nbits) +{ + struct perf_cpu_map *map = perf_cpu_map__new(str); + unsigned long *bm = NULL; + int i; + + bm = bitmap_alloc(nbits); + + if (map && bm) { + for (i = 0; i < map->nr; i++) + set_bit(map->map[i], bm); + } + + if (map) + perf_cpu_map__put(map); + return bm; +} + +static int test_bitmap(const char *str) +{ + unsigned long *bm = get_bitmap(str, NBITS); + char buf[100]; + int ret; + + bitmap_scnprintf(bm, NBITS, buf, sizeof(buf)); + pr_debug("bitmap: %s\n", buf); + + ret = !strcmp(buf, str); + free(bm); + return ret; +} + +int test__bitmap_print(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + TEST_ASSERT_VAL("failed to convert map", test_bitmap("1")); + TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,5")); + TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3,5,7,9,11,13,15,17,19,21-40")); + TEST_ASSERT_VAL("failed to convert map", test_bitmap("2-5")); + TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37")); + TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37")); + TEST_ASSERT_VAL("failed to convert map", test_bitmap("1-10,12-20,22-30,32-40")); + return 0; +} diff --git a/tools/perf/tests/bp_account.c b/tools/perf/tests/bp_account.c new file mode 100644 index 000000000..489b50604 --- /dev/null +++ b/tools/perf/tests/bp_account.c @@ -0,0 +1,206 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select + * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu. + */ +#define __SANE_USERSPACE_TYPES__ + +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <sys/ioctl.h> +#include <fcntl.h> +#include <linux/hw_breakpoint.h> + +#include "tests.h" +#include "debug.h" +#include "event.h" +#include "../perf-sys.h" +#include "cloexec.h" + +static volatile long the_var; + +static noinline int test_function(void) +{ + return 0; +} + +static int __event(bool is_x, void *addr, struct perf_event_attr *attr) +{ + int fd; + + memset(attr, 0, sizeof(struct perf_event_attr)); + attr->type = PERF_TYPE_BREAKPOINT; + attr->size = sizeof(struct perf_event_attr); + + attr->config = 0; + attr->bp_type = is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W; + attr->bp_addr = (unsigned long) addr; + attr->bp_len = sizeof(long); + + attr->sample_period = 1; + attr->sample_type = PERF_SAMPLE_IP; + + attr->exclude_kernel = 1; + attr->exclude_hv = 1; + + fd = sys_perf_event_open(attr, -1, 0, -1, + perf_event_open_cloexec_flag()); + if (fd < 0) { + pr_debug("failed opening event %llx\n", attr->config); + return TEST_FAIL; + } + + return fd; +} + +static int wp_event(void *addr, struct perf_event_attr *attr) +{ + return __event(false, addr, attr); +} + +static int bp_event(void *addr, struct perf_event_attr *attr) +{ + return __event(true, addr, attr); +} + +static int bp_accounting(int wp_cnt, int share) +{ + struct perf_event_attr attr, attr_mod, attr_new; + int i, fd[wp_cnt], fd_wp, ret; + + for (i = 0; i < wp_cnt; i++) { + fd[i] = wp_event((void *)&the_var, &attr); + TEST_ASSERT_VAL("failed to create wp\n", fd[i] != -1); + pr_debug("wp %d created\n", i); + } + + attr_mod = attr; + attr_mod.bp_type = HW_BREAKPOINT_X; + attr_mod.bp_addr = (unsigned long) test_function; + + ret = ioctl(fd[0], PERF_EVENT_IOC_MODIFY_ATTRIBUTES, &attr_mod); + TEST_ASSERT_VAL("failed to modify wp\n", ret == 0); + + pr_debug("wp 0 modified to bp\n"); + + if (!share) { + fd_wp = wp_event((void *)&the_var, &attr_new); + TEST_ASSERT_VAL("failed to create max wp\n", fd_wp != -1); + pr_debug("wp max created\n"); + } + + for (i = 0; i < wp_cnt; i++) + close(fd[i]); + + return 0; +} + +static int detect_cnt(bool is_x) +{ + struct perf_event_attr attr; + void *addr = is_x ? (void *)test_function : (void *)&the_var; + int fd[100], cnt = 0, i; + + while (1) { + if (cnt == 100) { + pr_debug("way too many debug registers, fix the test\n"); + return 0; + } + fd[cnt] = __event(is_x, addr, &attr); + + if (fd[cnt] < 0) + break; + cnt++; + } + + for (i = 0; i < cnt; i++) + close(fd[i]); + + return cnt; +} + +static int detect_ioctl(void) +{ + struct perf_event_attr attr; + int fd, ret = 1; + + fd = wp_event((void *) &the_var, &attr); + if (fd > 0) { + ret = ioctl(fd, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, &attr); + close(fd); + } + + return ret ? 0 : 1; +} + +static int detect_share(int wp_cnt, int bp_cnt) +{ + struct perf_event_attr attr; + int i, fd[wp_cnt + bp_cnt], ret; + + for (i = 0; i < wp_cnt; i++) { + fd[i] = wp_event((void *)&the_var, &attr); + TEST_ASSERT_VAL("failed to create wp\n", fd[i] != -1); + } + + for (; i < (bp_cnt + wp_cnt); i++) { + fd[i] = bp_event((void *)test_function, &attr); + if (fd[i] == -1) + break; + } + + ret = i != (bp_cnt + wp_cnt); + + while (i--) + close(fd[i]); + + return ret; +} + +/* + * This test does following: + * - detects the number of watch/break-points, + * skip test if any is missing + * - detects PERF_EVENT_IOC_MODIFY_ATTRIBUTES ioctl, + * skip test if it's missing + * - detects if watchpoints and breakpoints share + * same slots + * - create all possible watchpoints on cpu 0 + * - change one of it to breakpoint + * - in case wp and bp do not share slots, + * we create another watchpoint to ensure + * the slot accounting is correct + */ +int test__bp_accounting(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int has_ioctl = detect_ioctl(); + int wp_cnt = detect_cnt(false); + int bp_cnt = detect_cnt(true); + int share = detect_share(wp_cnt, bp_cnt); + + pr_debug("watchpoints count %d, breakpoints count %d, has_ioctl %d, share %d\n", + wp_cnt, bp_cnt, has_ioctl, share); + + if (!wp_cnt || !bp_cnt || !has_ioctl) + return TEST_SKIP; + + return bp_accounting(wp_cnt, share); +} + +bool test__bp_account_is_supported(void) +{ + /* + * PowerPC and S390 do not support creation of instruction + * breakpoints using the perf_event interface. + * + * Just disable the test for these architectures until these + * issues are resolved. + */ +#if defined(__powerpc__) || defined(__s390x__) + return false; +#else + return true; +#endif +} diff --git a/tools/perf/tests/bp_signal.c b/tools/perf/tests/bp_signal.c new file mode 100644 index 000000000..cc9fbcedb --- /dev/null +++ b/tools/perf/tests/bp_signal.c @@ -0,0 +1,313 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Inspired by breakpoint overflow test done by + * Vince Weaver <vincent.weaver@maine.edu> for perf_event_tests + * (git://github.com/deater/perf_event_tests) + */ + +/* + * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select + * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu. + */ +#define __SANE_USERSPACE_TYPES__ + +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <sys/ioctl.h> +#include <time.h> +#include <fcntl.h> +#include <signal.h> +#include <sys/mman.h> +#include <linux/compiler.h> +#include <linux/hw_breakpoint.h> + +#include "tests.h" +#include "debug.h" +#include "event.h" +#include "perf-sys.h" +#include "cloexec.h" + +static int fd1; +static int fd2; +static int fd3; +static int overflows; +static int overflows_2; + +volatile long the_var; + + +/* + * Use ASM to ensure watchpoint and breakpoint can be triggered + * at one instruction. + */ +#if defined (__x86_64__) +extern void __test_function(volatile long *ptr); +asm ( + ".pushsection .text;" + ".globl __test_function\n" + ".type __test_function, @function;" + "__test_function:\n" + "incq (%rdi)\n" + "ret\n" + ".popsection\n"); +#else +static void __test_function(volatile long *ptr) +{ + *ptr = 0x1234; +} +#endif + +static noinline int test_function(void) +{ + __test_function(&the_var); + the_var++; + return time(NULL); +} + +static void sig_handler_2(int signum __maybe_unused, + siginfo_t *oh __maybe_unused, + void *uc __maybe_unused) +{ + overflows_2++; + if (overflows_2 > 10) { + ioctl(fd1, PERF_EVENT_IOC_DISABLE, 0); + ioctl(fd2, PERF_EVENT_IOC_DISABLE, 0); + ioctl(fd3, PERF_EVENT_IOC_DISABLE, 0); + } +} + +static void sig_handler(int signum __maybe_unused, + siginfo_t *oh __maybe_unused, + void *uc __maybe_unused) +{ + overflows++; + + if (overflows > 10) { + /* + * This should be executed only once during + * this test, if we are here for the 10th + * time, consider this the recursive issue. + * + * We can get out of here by disable events, + * so no new SIGIO is delivered. + */ + ioctl(fd1, PERF_EVENT_IOC_DISABLE, 0); + ioctl(fd2, PERF_EVENT_IOC_DISABLE, 0); + ioctl(fd3, PERF_EVENT_IOC_DISABLE, 0); + } +} + +static int __event(bool is_x, void *addr, int sig) +{ + struct perf_event_attr pe; + int fd; + + memset(&pe, 0, sizeof(struct perf_event_attr)); + pe.type = PERF_TYPE_BREAKPOINT; + pe.size = sizeof(struct perf_event_attr); + + pe.config = 0; + pe.bp_type = is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W; + pe.bp_addr = (unsigned long) addr; + pe.bp_len = sizeof(long); + + pe.sample_period = 1; + pe.sample_type = PERF_SAMPLE_IP; + pe.wakeup_events = 1; + + pe.disabled = 1; + pe.exclude_kernel = 1; + pe.exclude_hv = 1; + + fd = sys_perf_event_open(&pe, 0, -1, -1, + perf_event_open_cloexec_flag()); + if (fd < 0) { + pr_debug("failed opening event %llx\n", pe.config); + return TEST_FAIL; + } + + fcntl(fd, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC); + fcntl(fd, F_SETSIG, sig); + fcntl(fd, F_SETOWN, getpid()); + + ioctl(fd, PERF_EVENT_IOC_RESET, 0); + + return fd; +} + +static int bp_event(void *addr, int sig) +{ + return __event(true, addr, sig); +} + +static int wp_event(void *addr, int sig) +{ + return __event(false, addr, sig); +} + +static long long bp_count(int fd) +{ + long long count; + int ret; + + ret = read(fd, &count, sizeof(long long)); + if (ret != sizeof(long long)) { + pr_debug("failed to read: %d\n", ret); + return TEST_FAIL; + } + + return count; +} + +int test__bp_signal(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct sigaction sa; + long long count1, count2, count3; + + /* setup SIGIO signal handler */ + memset(&sa, 0, sizeof(struct sigaction)); + sa.sa_sigaction = (void *) sig_handler; + sa.sa_flags = SA_SIGINFO; + + if (sigaction(SIGIO, &sa, NULL) < 0) { + pr_debug("failed setting up signal handler\n"); + return TEST_FAIL; + } + + sa.sa_sigaction = (void *) sig_handler_2; + if (sigaction(SIGUSR1, &sa, NULL) < 0) { + pr_debug("failed setting up signal handler 2\n"); + return TEST_FAIL; + } + + /* + * We create following events: + * + * fd1 - breakpoint event on __test_function with SIGIO + * signal configured. We should get signal + * notification each time the breakpoint is hit + * + * fd2 - breakpoint event on sig_handler with SIGUSR1 + * configured. We should get SIGUSR1 each time when + * breakpoint is hit + * + * fd3 - watchpoint event on __test_function with SIGIO + * configured. + * + * Following processing should happen: + * Exec: Action: Result: + * incq (%rdi) - fd1 event breakpoint hit -> count1 == 1 + * - SIGIO is delivered + * sig_handler - fd2 event breakpoint hit -> count2 == 1 + * - SIGUSR1 is delivered + * sig_handler_2 -> overflows_2 == 1 (nested signal) + * sys_rt_sigreturn - return from sig_handler_2 + * overflows++ -> overflows = 1 + * sys_rt_sigreturn - return from sig_handler + * incq (%rdi) - fd3 event watchpoint hit -> count3 == 1 (wp and bp in one insn) + * - SIGIO is delivered + * sig_handler - fd2 event breakpoint hit -> count2 == 2 + * - SIGUSR1 is delivered + * sig_handler_2 -> overflows_2 == 2 (nested signal) + * sys_rt_sigreturn - return from sig_handler_2 + * overflows++ -> overflows = 2 + * sys_rt_sigreturn - return from sig_handler + * the_var++ - fd3 event watchpoint hit -> count3 == 2 (standalone watchpoint) + * - SIGIO is delivered + * sig_handler - fd2 event breakpoint hit -> count2 == 3 + * - SIGUSR1 is delivered + * sig_handler_2 -> overflows_2 == 3 (nested signal) + * sys_rt_sigreturn - return from sig_handler_2 + * overflows++ -> overflows == 3 + * sys_rt_sigreturn - return from sig_handler + * + * The test case check following error conditions: + * - we get stuck in signal handler because of debug + * exception being triggered receursively due to + * the wrong RF EFLAG management + * + * - we never trigger the sig_handler breakpoint due + * to the rong RF EFLAG management + * + */ + + fd1 = bp_event(__test_function, SIGIO); + fd2 = bp_event(sig_handler, SIGUSR1); + fd3 = wp_event((void *)&the_var, SIGIO); + + ioctl(fd1, PERF_EVENT_IOC_ENABLE, 0); + ioctl(fd2, PERF_EVENT_IOC_ENABLE, 0); + ioctl(fd3, PERF_EVENT_IOC_ENABLE, 0); + + /* + * Kick off the test by trigering 'fd1' + * breakpoint. + */ + test_function(); + + ioctl(fd1, PERF_EVENT_IOC_DISABLE, 0); + ioctl(fd2, PERF_EVENT_IOC_DISABLE, 0); + ioctl(fd3, PERF_EVENT_IOC_DISABLE, 0); + + count1 = bp_count(fd1); + count2 = bp_count(fd2); + count3 = bp_count(fd3); + + close(fd1); + close(fd2); + close(fd3); + + pr_debug("count1 %lld, count2 %lld, count3 %lld, overflow %d, overflows_2 %d\n", + count1, count2, count3, overflows, overflows_2); + + if (count1 != 1) { + if (count1 == 11) + pr_debug("failed: RF EFLAG recursion issue detected\n"); + else + pr_debug("failed: wrong count for bp1: %lld, expected 1\n", count1); + } + + if (overflows != 3) + pr_debug("failed: wrong overflow (%d) hit, expected 3\n", overflows); + + if (overflows_2 != 3) + pr_debug("failed: wrong overflow_2 (%d) hit, expected 3\n", overflows_2); + + if (count2 != 3) + pr_debug("failed: wrong count for bp2 (%lld), expected 3\n", count2); + + if (count3 != 2) + pr_debug("failed: wrong count for bp3 (%lld), expected 2\n", count3); + + return count1 == 1 && overflows == 3 && count2 == 3 && overflows_2 == 3 && count3 == 2 ? + TEST_OK : TEST_FAIL; +} + +bool test__bp_signal_is_supported(void) +{ + /* + * PowerPC and S390 do not support creation of instruction + * breakpoints using the perf_event interface. + * + * ARM requires explicit rounding down of the instruction + * pointer in Thumb mode, and then requires the single-step + * to be handled explicitly in the overflow handler to avoid + * stepping into the SIGIO handler and getting stuck on the + * breakpointed instruction. + * + * Since arm64 has the same issue with arm for the single-step + * handling, this case also gets stuck on the breakpointed + * instruction. + * + * Just disable the test for these architectures until these + * issues are resolved. + */ +#if defined(__powerpc__) || defined(__s390x__) || defined(__arm__) || \ + defined(__aarch64__) + return false; +#else + return true; +#endif +} diff --git a/tools/perf/tests/bp_signal_overflow.c b/tools/perf/tests/bp_signal_overflow.c new file mode 100644 index 000000000..eb4dbbddf --- /dev/null +++ b/tools/perf/tests/bp_signal_overflow.c @@ -0,0 +1,135 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Originally done by Vince Weaver <vincent.weaver@maine.edu> for + * perf_event_tests (git://github.com/deater/perf_event_tests) + */ + +/* + * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select + * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu. + */ +#define __SANE_USERSPACE_TYPES__ + +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <sys/ioctl.h> +#include <time.h> +#include <fcntl.h> +#include <signal.h> +#include <sys/mman.h> +#include <linux/compiler.h> +#include <linux/hw_breakpoint.h> + +#include "tests.h" +#include "debug.h" +#include "event.h" +#include "../perf-sys.h" +#include "cloexec.h" + +static int overflows; + +static noinline int test_function(void) +{ + return time(NULL); +} + +static void sig_handler(int signum __maybe_unused, + siginfo_t *oh __maybe_unused, + void *uc __maybe_unused) +{ + overflows++; +} + +static long long bp_count(int fd) +{ + long long count; + int ret; + + ret = read(fd, &count, sizeof(long long)); + if (ret != sizeof(long long)) { + pr_debug("failed to read: %d\n", ret); + return TEST_FAIL; + } + + return count; +} + +#define EXECUTIONS 10000 +#define THRESHOLD 100 + +int test__bp_signal_overflow(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_event_attr pe; + struct sigaction sa; + long long count; + int fd, i, fails = 0; + + /* setup SIGIO signal handler */ + memset(&sa, 0, sizeof(struct sigaction)); + sa.sa_sigaction = (void *) sig_handler; + sa.sa_flags = SA_SIGINFO; + + if (sigaction(SIGIO, &sa, NULL) < 0) { + pr_debug("failed setting up signal handler\n"); + return TEST_FAIL; + } + + memset(&pe, 0, sizeof(struct perf_event_attr)); + pe.type = PERF_TYPE_BREAKPOINT; + pe.size = sizeof(struct perf_event_attr); + + pe.config = 0; + pe.bp_type = HW_BREAKPOINT_X; + pe.bp_addr = (unsigned long) test_function; + pe.bp_len = sizeof(long); + + pe.sample_period = THRESHOLD; + pe.sample_type = PERF_SAMPLE_IP; + pe.wakeup_events = 1; + + pe.disabled = 1; + pe.exclude_kernel = 1; + pe.exclude_hv = 1; + + fd = sys_perf_event_open(&pe, 0, -1, -1, + perf_event_open_cloexec_flag()); + if (fd < 0) { + pr_debug("failed opening event %llx\n", pe.config); + return TEST_FAIL; + } + + fcntl(fd, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC); + fcntl(fd, F_SETSIG, SIGIO); + fcntl(fd, F_SETOWN, getpid()); + + ioctl(fd, PERF_EVENT_IOC_RESET, 0); + ioctl(fd, PERF_EVENT_IOC_ENABLE, 0); + + for (i = 0; i < EXECUTIONS; i++) + test_function(); + + ioctl(fd, PERF_EVENT_IOC_DISABLE, 0); + + count = bp_count(fd); + + close(fd); + + pr_debug("count %lld, overflow %d\n", + count, overflows); + + if (count != EXECUTIONS) { + pr_debug("\tWrong number of executions %lld != %d\n", + count, EXECUTIONS); + fails++; + } + + if (overflows != EXECUTIONS / THRESHOLD) { + pr_debug("\tWrong number of overflows %d != %d\n", + overflows, EXECUTIONS / THRESHOLD); + fails++; + } + + return fails ? TEST_FAIL : TEST_OK; +} diff --git a/tools/perf/tests/bpf-script-example.c b/tools/perf/tests/bpf-script-example.c new file mode 100644 index 000000000..ab4b98b31 --- /dev/null +++ b/tools/perf/tests/bpf-script-example.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * bpf-script-example.c + * Test basic LLVM building + */ +#ifndef LINUX_VERSION_CODE +# error Need LINUX_VERSION_CODE +# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig' +#endif +#define BPF_ANY 0 +#define BPF_MAP_TYPE_ARRAY 2 +#define BPF_FUNC_map_lookup_elem 1 +#define BPF_FUNC_map_update_elem 2 + +static void *(*bpf_map_lookup_elem)(void *map, void *key) = + (void *) BPF_FUNC_map_lookup_elem; +static void *(*bpf_map_update_elem)(void *map, void *key, void *value, int flags) = + (void *) BPF_FUNC_map_update_elem; + +struct bpf_map_def { + unsigned int type; + unsigned int key_size; + unsigned int value_size; + unsigned int max_entries; +}; + +#define SEC(NAME) __attribute__((section(NAME), used)) +struct bpf_map_def SEC("maps") flip_table = { + .type = BPF_MAP_TYPE_ARRAY, + .key_size = sizeof(int), + .value_size = sizeof(int), + .max_entries = 1, +}; + +SEC("func=do_epoll_wait") +int bpf_func__SyS_epoll_pwait(void *ctx) +{ + int ind =0; + int *flag = bpf_map_lookup_elem(&flip_table, &ind); + int new_flag; + if (!flag) + return 0; + /* flip flag and store back */ + new_flag = !*flag; + bpf_map_update_elem(&flip_table, &ind, &new_flag, BPF_ANY); + return new_flag; +} +char _license[] SEC("license") = "GPL"; +int _version SEC("version") = LINUX_VERSION_CODE; diff --git a/tools/perf/tests/bpf-script-test-kbuild.c b/tools/perf/tests/bpf-script-test-kbuild.c new file mode 100644 index 000000000..219673aa2 --- /dev/null +++ b/tools/perf/tests/bpf-script-test-kbuild.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * bpf-script-test-kbuild.c + * Test include from kernel header + */ +#ifndef LINUX_VERSION_CODE +# error Need LINUX_VERSION_CODE +# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig' +#endif +#define SEC(NAME) __attribute__((section(NAME), used)) + +#include <uapi/linux/fs.h> + +SEC("func=vfs_llseek") +int bpf_func__vfs_llseek(void *ctx) +{ + return 0; +} + +char _license[] SEC("license") = "GPL"; +int _version SEC("version") = LINUX_VERSION_CODE; diff --git a/tools/perf/tests/bpf-script-test-prologue.c b/tools/perf/tests/bpf-script-test-prologue.c new file mode 100644 index 000000000..bd83d364c --- /dev/null +++ b/tools/perf/tests/bpf-script-test-prologue.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * bpf-script-test-prologue.c + * Test BPF prologue + */ +#ifndef LINUX_VERSION_CODE +# error Need LINUX_VERSION_CODE +# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig' +#endif +#define SEC(NAME) __attribute__((section(NAME), used)) + +#include <uapi/linux/fs.h> + +/* + * If CONFIG_PROFILE_ALL_BRANCHES is selected, + * 'if' is redefined after include kernel header. + * Recover 'if' for BPF object code. + */ +#ifdef if +# undef if +#endif + +#define FMODE_READ 0x1 +#define FMODE_WRITE 0x2 + +static void (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) = + (void *) 6; + +SEC("func=null_lseek file->f_mode offset orig") +int bpf_func__null_lseek(void *ctx, int err, unsigned long _f_mode, + unsigned long offset, unsigned long orig) +{ + fmode_t f_mode = (fmode_t)_f_mode; + + if (err) + return 0; + if (f_mode & FMODE_WRITE) + return 0; + if (offset & 1) + return 0; + if (orig == SEEK_CUR) + return 0; + return 1; +} + +char _license[] SEC("license") = "GPL"; +int _version SEC("version") = LINUX_VERSION_CODE; diff --git a/tools/perf/tests/bpf-script-test-relocation.c b/tools/perf/tests/bpf-script-test-relocation.c new file mode 100644 index 000000000..74006e4b2 --- /dev/null +++ b/tools/perf/tests/bpf-script-test-relocation.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * bpf-script-test-relocation.c + * Test BPF loader checking relocation + */ +#ifndef LINUX_VERSION_CODE +# error Need LINUX_VERSION_CODE +# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig' +#endif +#define BPF_ANY 0 +#define BPF_MAP_TYPE_ARRAY 2 +#define BPF_FUNC_map_lookup_elem 1 +#define BPF_FUNC_map_update_elem 2 + +static void *(*bpf_map_lookup_elem)(void *map, void *key) = + (void *) BPF_FUNC_map_lookup_elem; +static void *(*bpf_map_update_elem)(void *map, void *key, void *value, int flags) = + (void *) BPF_FUNC_map_update_elem; + +struct bpf_map_def { + unsigned int type; + unsigned int key_size; + unsigned int value_size; + unsigned int max_entries; +}; + +#define SEC(NAME) __attribute__((section(NAME), used)) +struct bpf_map_def SEC("maps") my_table = { + .type = BPF_MAP_TYPE_ARRAY, + .key_size = sizeof(int), + .value_size = sizeof(int), + .max_entries = 1, +}; + +int this_is_a_global_val; + +SEC("func=sys_write") +int bpf_func__sys_write(void *ctx) +{ + int key = 0; + int value = 0; + + /* + * Incorrect relocation. Should not allow this program be + * loaded into kernel. + */ + bpf_map_update_elem(&this_is_a_global_val, &key, &value, 0); + return 0; +} +char _license[] SEC("license") = "GPL"; +int _version SEC("version") = LINUX_VERSION_CODE; diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c new file mode 100644 index 000000000..e5832b74a --- /dev/null +++ b/tools/perf/tests/bpf.c @@ -0,0 +1,369 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/epoll.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <util/record.h> +#include <util/util.h> +#include <util/bpf-loader.h> +#include <util/evlist.h> +#include <linux/bpf.h> +#include <linux/filter.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <api/fs/fs.h> +#include <bpf/bpf.h> +#include <perf/mmap.h> +#include "tests.h" +#include "llvm.h" +#include "debug.h" +#include "parse-events.h" +#include "util/mmap.h" +#define NR_ITERS 111 +#define PERF_TEST_BPF_PATH "/sys/fs/bpf/perf_test" + +#ifdef HAVE_LIBBPF_SUPPORT + +static int epoll_pwait_loop(void) +{ + int i; + + /* Should fail NR_ITERS times */ + for (i = 0; i < NR_ITERS; i++) + epoll_pwait(-(i + 1), NULL, 0, 0, NULL); + return 0; +} + +#ifdef HAVE_BPF_PROLOGUE + +static int llseek_loop(void) +{ + int fds[2], i; + + fds[0] = open("/dev/null", O_RDONLY); + fds[1] = open("/dev/null", O_RDWR); + + if (fds[0] < 0 || fds[1] < 0) + return -1; + + for (i = 0; i < NR_ITERS; i++) { + lseek(fds[i % 2], i, (i / 2) % 2 ? SEEK_CUR : SEEK_SET); + lseek(fds[(i + 1) % 2], i, (i / 2) % 2 ? SEEK_CUR : SEEK_SET); + } + close(fds[0]); + close(fds[1]); + return 0; +} + +#endif + +static struct { + enum test_llvm__testcase prog_id; + const char *desc; + const char *name; + const char *msg_compile_fail; + const char *msg_load_fail; + int (*target_func)(void); + int expect_result; + bool pin; +} bpf_testcase_table[] = { + { + .prog_id = LLVM_TESTCASE_BASE, + .desc = "Basic BPF filtering", + .name = "[basic_bpf_test]", + .msg_compile_fail = "fix 'perf test LLVM' first", + .msg_load_fail = "load bpf object failed", + .target_func = &epoll_pwait_loop, + .expect_result = (NR_ITERS + 1) / 2, + }, + { + .prog_id = LLVM_TESTCASE_BASE, + .desc = "BPF pinning", + .name = "[bpf_pinning]", + .msg_compile_fail = "fix kbuild first", + .msg_load_fail = "check your vmlinux setting?", + .target_func = &epoll_pwait_loop, + .expect_result = (NR_ITERS + 1) / 2, + .pin = true, + }, +#ifdef HAVE_BPF_PROLOGUE + { + .prog_id = LLVM_TESTCASE_BPF_PROLOGUE, + .desc = "BPF prologue generation", + .name = "[bpf_prologue_test]", + .msg_compile_fail = "fix kbuild first", + .msg_load_fail = "check your vmlinux setting?", + .target_func = &llseek_loop, + .expect_result = (NR_ITERS + 1) / 4, + }, +#endif + { + .prog_id = LLVM_TESTCASE_BPF_RELOCATION, + .desc = "BPF relocation checker", + .name = "[bpf_relocation_test]", + .msg_compile_fail = "fix 'perf test LLVM' first", + .msg_load_fail = "libbpf error when dealing with relocation", + }, +}; + +static int do_test(struct bpf_object *obj, int (*func)(void), + int expect) +{ + struct record_opts opts = { + .target = { + .uid = UINT_MAX, + .uses_mmap = true, + }, + .freq = 0, + .mmap_pages = 256, + .default_interval = 1, + }; + + char pid[16]; + char sbuf[STRERR_BUFSIZE]; + struct evlist *evlist; + int i, ret = TEST_FAIL, err = 0, count = 0; + + struct parse_events_state parse_state; + struct parse_events_error parse_error; + + bzero(&parse_error, sizeof(parse_error)); + bzero(&parse_state, sizeof(parse_state)); + parse_state.error = &parse_error; + INIT_LIST_HEAD(&parse_state.list); + + err = parse_events_load_bpf_obj(&parse_state, &parse_state.list, obj, NULL); + if (err || list_empty(&parse_state.list)) { + pr_debug("Failed to add events selected by BPF\n"); + return TEST_FAIL; + } + + snprintf(pid, sizeof(pid), "%d", getpid()); + pid[sizeof(pid) - 1] = '\0'; + opts.target.tid = opts.target.pid = pid; + + /* Instead of perf_evlist__new_default, don't add default events */ + evlist = evlist__new(); + if (!evlist) { + pr_debug("Not enough memory to create evlist\n"); + return TEST_FAIL; + } + + err = perf_evlist__create_maps(evlist, &opts.target); + if (err < 0) { + pr_debug("Not enough memory to create thread/cpu maps\n"); + goto out_delete_evlist; + } + + perf_evlist__splice_list_tail(evlist, &parse_state.list); + evlist->nr_groups = parse_state.nr_groups; + + perf_evlist__config(evlist, &opts, NULL); + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + err = evlist__mmap(evlist, opts.mmap_pages); + if (err < 0) { + pr_debug("evlist__mmap: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + evlist__enable(evlist); + (*func)(); + evlist__disable(evlist); + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + union perf_event *event; + struct mmap *md; + + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + const u32 type = event->header.type; + + if (type == PERF_RECORD_SAMPLE) + count ++; + } + perf_mmap__read_done(&md->core); + } + + if (count != expect * evlist->core.nr_entries) { + pr_debug("BPF filter result incorrect, expected %d, got %d samples\n", expect * evlist->core.nr_entries, count); + goto out_delete_evlist; + } + + ret = TEST_OK; + +out_delete_evlist: + evlist__delete(evlist); + return ret; +} + +static struct bpf_object * +prepare_bpf(void *obj_buf, size_t obj_buf_sz, const char *name) +{ + struct bpf_object *obj; + + obj = bpf__prepare_load_buffer(obj_buf, obj_buf_sz, name); + if (IS_ERR(obj)) { + pr_debug("Compile BPF program failed.\n"); + return NULL; + } + return obj; +} + +static int __test__bpf(int idx) +{ + int ret; + void *obj_buf; + size_t obj_buf_sz; + struct bpf_object *obj; + + ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz, + bpf_testcase_table[idx].prog_id, + true, NULL); + if (ret != TEST_OK || !obj_buf || !obj_buf_sz) { + pr_debug("Unable to get BPF object, %s\n", + bpf_testcase_table[idx].msg_compile_fail); + if (idx == 0) + return TEST_SKIP; + else + return TEST_FAIL; + } + + obj = prepare_bpf(obj_buf, obj_buf_sz, + bpf_testcase_table[idx].name); + if ((!!bpf_testcase_table[idx].target_func) != (!!obj)) { + if (!obj) + pr_debug("Fail to load BPF object: %s\n", + bpf_testcase_table[idx].msg_load_fail); + else + pr_debug("Success unexpectedly: %s\n", + bpf_testcase_table[idx].msg_load_fail); + ret = TEST_FAIL; + goto out; + } + + if (obj) { + ret = do_test(obj, + bpf_testcase_table[idx].target_func, + bpf_testcase_table[idx].expect_result); + if (ret != TEST_OK) + goto out; + if (bpf_testcase_table[idx].pin) { + int err; + + if (!bpf_fs__mount()) { + pr_debug("BPF filesystem not mounted\n"); + ret = TEST_FAIL; + goto out; + } + err = mkdir(PERF_TEST_BPF_PATH, 0777); + if (err && errno != EEXIST) { + pr_debug("Failed to make perf_test dir: %s\n", + strerror(errno)); + ret = TEST_FAIL; + goto out; + } + if (bpf_object__pin(obj, PERF_TEST_BPF_PATH)) + ret = TEST_FAIL; + if (rm_rf(PERF_TEST_BPF_PATH)) + ret = TEST_FAIL; + } + } + +out: + free(obj_buf); + bpf__clear(); + return ret; +} + +int test__bpf_subtest_get_nr(void) +{ + return (int)ARRAY_SIZE(bpf_testcase_table); +} + +const char *test__bpf_subtest_get_desc(int i) +{ + if (i < 0 || i >= (int)ARRAY_SIZE(bpf_testcase_table)) + return NULL; + return bpf_testcase_table[i].desc; +} + +static int check_env(void) +{ + int err; + unsigned int kver_int; + char license[] = "GPL"; + + struct bpf_insn insns[] = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }; + + err = fetch_kernel_version(&kver_int, NULL, 0); + if (err) { + pr_debug("Unable to get kernel version\n"); + return err; + } + + err = bpf_load_program(BPF_PROG_TYPE_KPROBE, insns, + sizeof(insns) / sizeof(insns[0]), + license, kver_int, NULL, 0); + if (err < 0) { + pr_err("Missing basic BPF support, skip this test: %s\n", + strerror(errno)); + return err; + } + close(err); + + return 0; +} + +int test__bpf(struct test *test __maybe_unused, int i) +{ + int err; + + if (i < 0 || i >= (int)ARRAY_SIZE(bpf_testcase_table)) + return TEST_FAIL; + + if (geteuid() != 0) { + pr_debug("Only root can run BPF test\n"); + return TEST_SKIP; + } + + if (check_env()) + return TEST_SKIP; + + err = __test__bpf(i); + return err; +} + +#else +int test__bpf_subtest_get_nr(void) +{ + return 0; +} + +const char *test__bpf_subtest_get_desc(int i __maybe_unused) +{ + return NULL; +} + +int test__bpf(struct test *test __maybe_unused, int i __maybe_unused) +{ + pr_debug("Skip BPF test because BPF support is not compiled\n"); + return TEST_SKIP; +} +#endif diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c new file mode 100644 index 000000000..73c911dd0 --- /dev/null +++ b/tools/perf/tests/builtin-test.c @@ -0,0 +1,819 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * builtin-test.c + * + * Builtin regression testing command: ever growing number of sanity tests + */ +#include <fcntl.h> +#include <errno.h> +#include <unistd.h> +#include <string.h> +#include <stdlib.h> +#include <sys/types.h> +#include <dirent.h> +#include <sys/wait.h> +#include <sys/stat.h> +#include "builtin.h" +#include "hist.h" +#include "intlist.h" +#include "tests.h" +#include "debug.h" +#include "color.h" +#include <subcmd/parse-options.h> +#include "string2.h" +#include "symbol.h" +#include "util/rlimit.h" +#include <linux/kernel.h> +#include <linux/string.h> +#include <subcmd/exec-cmd.h> + +static bool dont_fork; + +struct test __weak arch_tests[] = { + { + .func = NULL, + }, +}; + +static struct test generic_tests[] = { + { + .desc = "vmlinux symtab matches kallsyms", + .func = test__vmlinux_matches_kallsyms, + }, + { + .desc = "Detect openat syscall event", + .func = test__openat_syscall_event, + }, + { + .desc = "Detect openat syscall event on all cpus", + .func = test__openat_syscall_event_on_all_cpus, + }, + { + .desc = "Read samples using the mmap interface", + .func = test__basic_mmap, + }, + { + .desc = "Test data source output", + .func = test__mem, + }, + { + .desc = "Parse event definition strings", + .func = test__parse_events, + }, + { + .desc = "Simple expression parser", + .func = test__expr, + }, + { + .desc = "PERF_RECORD_* events & perf_sample fields", + .func = test__PERF_RECORD, + }, + { + .desc = "Parse perf pmu format", + .func = test__pmu, + }, + { + .desc = "PMU events", + .func = test__pmu_events, + .subtest = { + .skip_if_fail = false, + .get_nr = test__pmu_events_subtest_get_nr, + .get_desc = test__pmu_events_subtest_get_desc, + .skip_reason = test__pmu_events_subtest_skip_reason, + }, + + }, + { + .desc = "DSO data read", + .func = test__dso_data, + }, + { + .desc = "DSO data cache", + .func = test__dso_data_cache, + }, + { + .desc = "DSO data reopen", + .func = test__dso_data_reopen, + }, + { + .desc = "Roundtrip evsel->name", + .func = test__perf_evsel__roundtrip_name_test, + }, + { + .desc = "Parse sched tracepoints fields", + .func = test__perf_evsel__tp_sched_test, + }, + { + .desc = "syscalls:sys_enter_openat event fields", + .func = test__syscall_openat_tp_fields, + }, + { + .desc = "Setup struct perf_event_attr", + .func = test__attr, + }, + { + .desc = "Match and link multiple hists", + .func = test__hists_link, + }, + { + .desc = "'import perf' in python", + .func = test__python_use, + }, + { + .desc = "Breakpoint overflow signal handler", + .func = test__bp_signal, + .is_supported = test__bp_signal_is_supported, + }, + { + .desc = "Breakpoint overflow sampling", + .func = test__bp_signal_overflow, + .is_supported = test__bp_signal_is_supported, + }, + { + .desc = "Breakpoint accounting", + .func = test__bp_accounting, + .is_supported = test__bp_account_is_supported, + }, + { + .desc = "Watchpoint", + .func = test__wp, + .is_supported = test__wp_is_supported, + .subtest = { + .skip_if_fail = false, + .get_nr = test__wp_subtest_get_nr, + .get_desc = test__wp_subtest_get_desc, + }, + }, + { + .desc = "Number of exit events of a simple workload", + .func = test__task_exit, + }, + { + .desc = "Software clock events period values", + .func = test__sw_clock_freq, + }, + { + .desc = "Object code reading", + .func = test__code_reading, + }, + { + .desc = "Sample parsing", + .func = test__sample_parsing, + }, + { + .desc = "Use a dummy software event to keep tracking", + .func = test__keep_tracking, + }, + { + .desc = "Parse with no sample_id_all bit set", + .func = test__parse_no_sample_id_all, + }, + { + .desc = "Filter hist entries", + .func = test__hists_filter, + }, + { + .desc = "Lookup mmap thread", + .func = test__mmap_thread_lookup, + }, + { + .desc = "Share thread maps", + .func = test__thread_maps_share, + }, + { + .desc = "Sort output of hist entries", + .func = test__hists_output, + }, + { + .desc = "Cumulate child hist entries", + .func = test__hists_cumulate, + }, + { + .desc = "Track with sched_switch", + .func = test__switch_tracking, + }, + { + .desc = "Filter fds with revents mask in a fdarray", + .func = test__fdarray__filter, + }, + { + .desc = "Add fd to a fdarray, making it autogrow", + .func = test__fdarray__add, + }, + { + .desc = "kmod_path__parse", + .func = test__kmod_path__parse, + }, + { + .desc = "Thread map", + .func = test__thread_map, + }, + { + .desc = "LLVM search and compile", + .func = test__llvm, + .subtest = { + .skip_if_fail = true, + .get_nr = test__llvm_subtest_get_nr, + .get_desc = test__llvm_subtest_get_desc, + }, + }, + { + .desc = "Session topology", + .func = test__session_topology, + }, + { + .desc = "BPF filter", + .func = test__bpf, + .subtest = { + .skip_if_fail = true, + .get_nr = test__bpf_subtest_get_nr, + .get_desc = test__bpf_subtest_get_desc, + }, + }, + { + .desc = "Synthesize thread map", + .func = test__thread_map_synthesize, + }, + { + .desc = "Remove thread map", + .func = test__thread_map_remove, + }, + { + .desc = "Synthesize cpu map", + .func = test__cpu_map_synthesize, + }, + { + .desc = "Synthesize stat config", + .func = test__synthesize_stat_config, + }, + { + .desc = "Synthesize stat", + .func = test__synthesize_stat, + }, + { + .desc = "Synthesize stat round", + .func = test__synthesize_stat_round, + }, + { + .desc = "Synthesize attr update", + .func = test__event_update, + }, + { + .desc = "Event times", + .func = test__event_times, + }, + { + .desc = "Read backward ring buffer", + .func = test__backward_ring_buffer, + }, + { + .desc = "Print cpu map", + .func = test__cpu_map_print, + }, + { + .desc = "Merge cpu map", + .func = test__cpu_map_merge, + }, + + { + .desc = "Probe SDT events", + .func = test__sdt_event, + }, + { + .desc = "is_printable_array", + .func = test__is_printable_array, + }, + { + .desc = "Print bitmap", + .func = test__bitmap_print, + }, + { + .desc = "perf hooks", + .func = test__perf_hooks, + }, + { + .desc = "builtin clang support", + .func = test__clang, + .subtest = { + .skip_if_fail = true, + .get_nr = test__clang_subtest_get_nr, + .get_desc = test__clang_subtest_get_desc, + } + }, + { + .desc = "unit_number__scnprintf", + .func = test__unit_number__scnprint, + }, + { + .desc = "mem2node", + .func = test__mem2node, + }, + { + .desc = "time utils", + .func = test__time_utils, + }, + { + .desc = "Test jit_write_elf", + .func = test__jit_write_elf, + }, + { + .desc = "Test libpfm4 support", + .func = test__pfm, + .subtest = { + .skip_if_fail = true, + .get_nr = test__pfm_subtest_get_nr, + .get_desc = test__pfm_subtest_get_desc, + } + }, + { + .desc = "Test api io", + .func = test__api_io, + }, + { + .desc = "maps__merge_in", + .func = test__maps__merge_in, + }, + { + .desc = "Demangle Java", + .func = test__demangle_java, + }, + { + .desc = "Parse and process metrics", + .func = test__parse_metric, + }, + { + .desc = "PE file support", + .func = test__pe_file_parsing, + }, + { + .desc = "Event expansion for cgroups", + .func = test__expand_cgroup_events, + }, + { + .func = NULL, + }, +}; + +static struct test *tests[] = { + generic_tests, + arch_tests, +}; + +static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[]) +{ + int i; + + if (argc == 0) + return true; + + for (i = 0; i < argc; ++i) { + char *end; + long nr = strtoul(argv[i], &end, 10); + + if (*end == '\0') { + if (nr == curr + 1) + return true; + continue; + } + + if (strcasestr(desc, argv[i])) + return true; + } + + return false; +} + +static int run_test(struct test *test, int subtest) +{ + int status, err = -1, child = dont_fork ? 0 : fork(); + char sbuf[STRERR_BUFSIZE]; + + if (child < 0) { + pr_err("failed to fork test: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + return -1; + } + + if (!child) { + if (!dont_fork) { + pr_debug("test child forked, pid %d\n", getpid()); + + if (verbose <= 0) { + int nullfd = open("/dev/null", O_WRONLY); + + if (nullfd >= 0) { + close(STDERR_FILENO); + close(STDOUT_FILENO); + + dup2(nullfd, STDOUT_FILENO); + dup2(STDOUT_FILENO, STDERR_FILENO); + close(nullfd); + } + } else { + signal(SIGSEGV, sighandler_dump_stack); + signal(SIGFPE, sighandler_dump_stack); + } + } + + err = test->func(test, subtest); + if (!dont_fork) + exit(err); + } + + if (!dont_fork) { + wait(&status); + + if (WIFEXITED(status)) { + err = (signed char)WEXITSTATUS(status); + pr_debug("test child finished with %d\n", err); + } else if (WIFSIGNALED(status)) { + err = -1; + pr_debug("test child interrupted\n"); + } + } + + return err; +} + +#define for_each_test(j, t) \ + for (j = 0; j < ARRAY_SIZE(tests); j++) \ + for (t = &tests[j][0]; t->func; t++) + +static int test_and_print(struct test *t, bool force_skip, int subtest) +{ + int err; + + if (!force_skip) { + pr_debug("\n--- start ---\n"); + err = run_test(t, subtest); + pr_debug("---- end ----\n"); + } else { + pr_debug("\n--- force skipped ---\n"); + err = TEST_SKIP; + } + + if (!t->subtest.get_nr) + pr_debug("%s:", t->desc); + else + pr_debug("%s subtest %d:", t->desc, subtest + 1); + + switch (err) { + case TEST_OK: + pr_info(" Ok\n"); + break; + case TEST_SKIP: { + const char *skip_reason = NULL; + if (t->subtest.skip_reason) + skip_reason = t->subtest.skip_reason(subtest); + if (skip_reason) + color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (%s)\n", skip_reason); + else + color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n"); + } + break; + case TEST_FAIL: + default: + color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n"); + break; + } + + return err; +} + +static const char *shell_test__description(char *description, size_t size, + const char *path, const char *name) +{ + FILE *fp; + char filename[PATH_MAX]; + + path__join(filename, sizeof(filename), path, name); + fp = fopen(filename, "r"); + if (!fp) + return NULL; + + /* Skip shebang */ + while (fgetc(fp) != '\n'); + + description = fgets(description, size, fp); + fclose(fp); + + return description ? strim(description + 1) : NULL; +} + +#define for_each_shell_test(dir, base, ent) \ + while ((ent = readdir(dir)) != NULL) \ + if (!is_directory(base, ent) && ent->d_name[0] != '.') + +static const char *shell_tests__dir(char *path, size_t size) +{ + const char *devel_dirs[] = { "./tools/perf/tests", "./tests", }; + char *exec_path; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(devel_dirs); ++i) { + struct stat st; + if (!lstat(devel_dirs[i], &st)) { + scnprintf(path, size, "%s/shell", devel_dirs[i]); + if (!lstat(devel_dirs[i], &st)) + return path; + } + } + + /* Then installed path. */ + exec_path = get_argv_exec_path(); + scnprintf(path, size, "%s/tests/shell", exec_path); + free(exec_path); + return path; +} + +static int shell_tests__max_desc_width(void) +{ + DIR *dir; + struct dirent *ent; + char path_dir[PATH_MAX]; + const char *path = shell_tests__dir(path_dir, sizeof(path_dir)); + int width = 0; + + if (path == NULL) + return -1; + + dir = opendir(path); + if (!dir) + return -1; + + for_each_shell_test(dir, path, ent) { + char bf[256]; + const char *desc = shell_test__description(bf, sizeof(bf), path, ent->d_name); + + if (desc) { + int len = strlen(desc); + + if (width < len) + width = len; + } + } + + closedir(dir); + return width; +} + +struct shell_test { + const char *dir; + const char *file; +}; + +static int shell_test__run(struct test *test, int subdir __maybe_unused) +{ + int err; + char script[PATH_MAX]; + struct shell_test *st = test->priv; + + path__join(script, sizeof(script), st->dir, st->file); + + err = system(script); + if (!err) + return TEST_OK; + + return WEXITSTATUS(err) == 2 ? TEST_SKIP : TEST_FAIL; +} + +static int run_shell_tests(int argc, const char *argv[], int i, int width) +{ + DIR *dir; + struct dirent *ent; + char path_dir[PATH_MAX]; + struct shell_test st = { + .dir = shell_tests__dir(path_dir, sizeof(path_dir)), + }; + + if (st.dir == NULL) + return -1; + + dir = opendir(st.dir); + if (!dir) { + pr_err("failed to open shell test directory: %s\n", + st.dir); + return -1; + } + + for_each_shell_test(dir, st.dir, ent) { + int curr = i++; + char desc[256]; + struct test test = { + .desc = shell_test__description(desc, sizeof(desc), st.dir, ent->d_name), + .func = shell_test__run, + .priv = &st, + }; + + if (!perf_test__matches(test.desc, curr, argc, argv)) + continue; + + st.file = ent->d_name; + pr_info("%2d: %-*s:", i, width, test.desc); + test_and_print(&test, false, -1); + } + + closedir(dir); + return 0; +} + +static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) +{ + struct test *t; + unsigned int j; + int i = 0; + int width = shell_tests__max_desc_width(); + + for_each_test(j, t) { + int len = strlen(t->desc); + + if (width < len) + width = len; + } + + for_each_test(j, t) { + int curr = i++, err; + int subi; + + if (!perf_test__matches(t->desc, curr, argc, argv)) { + bool skip = true; + int subn; + + if (!t->subtest.get_nr) + continue; + + subn = t->subtest.get_nr(); + + for (subi = 0; subi < subn; subi++) { + if (perf_test__matches(t->subtest.get_desc(subi), curr, argc, argv)) + skip = false; + } + + if (skip) + continue; + } + + if (t->is_supported && !t->is_supported()) { + pr_debug("%2d: %-*s: Disabled\n", i, width, t->desc); + continue; + } + + pr_info("%2d: %-*s:", i, width, t->desc); + + if (intlist__find(skiplist, i)) { + color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); + continue; + } + + if (!t->subtest.get_nr) { + test_and_print(t, false, -1); + } else { + int subn = t->subtest.get_nr(); + /* + * minus 2 to align with normal testcases. + * For subtest we print additional '.x' in number. + * for example: + * + * 35: Test LLVM searching and compiling : + * 35.1: Basic BPF llvm compiling test : Ok + */ + int subw = width > 2 ? width - 2 : width; + bool skip = false; + + if (subn <= 0) { + color_fprintf(stderr, PERF_COLOR_YELLOW, + " Skip (not compiled in)\n"); + continue; + } + pr_info("\n"); + + for (subi = 0; subi < subn; subi++) { + int len = strlen(t->subtest.get_desc(subi)); + + if (subw < len) + subw = len; + } + + for (subi = 0; subi < subn; subi++) { + if (!perf_test__matches(t->subtest.get_desc(subi), curr, argc, argv)) + continue; + + pr_info("%2d.%1d: %-*s:", i, subi + 1, subw, + t->subtest.get_desc(subi)); + err = test_and_print(t, skip, subi); + if (err != TEST_OK && t->subtest.skip_if_fail) + skip = true; + } + } + } + + return run_shell_tests(argc, argv, i, width); +} + +static int perf_test__list_shell(int argc, const char **argv, int i) +{ + DIR *dir; + struct dirent *ent; + char path_dir[PATH_MAX]; + const char *path = shell_tests__dir(path_dir, sizeof(path_dir)); + + if (path == NULL) + return -1; + + dir = opendir(path); + if (!dir) + return -1; + + for_each_shell_test(dir, path, ent) { + int curr = i++; + char bf[256]; + struct test t = { + .desc = shell_test__description(bf, sizeof(bf), path, ent->d_name), + }; + + if (!perf_test__matches(t.desc, curr, argc, argv)) + continue; + + pr_info("%2d: %s\n", i, t.desc); + } + + closedir(dir); + return 0; +} + +static int perf_test__list(int argc, const char **argv) +{ + unsigned int j; + struct test *t; + int i = 0; + + for_each_test(j, t) { + int curr = i++; + + if (!perf_test__matches(t->desc, curr, argc, argv) || + (t->is_supported && !t->is_supported())) + continue; + + pr_info("%2d: %s\n", i, t->desc); + + if (t->subtest.get_nr) { + int subn = t->subtest.get_nr(); + int subi; + + for (subi = 0; subi < subn; subi++) + pr_info("%2d:%1d: %s\n", i, subi + 1, + t->subtest.get_desc(subi)); + } + } + + perf_test__list_shell(argc, argv, i); + + return 0; +} + +int cmd_test(int argc, const char **argv) +{ + const char *test_usage[] = { + "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]", + NULL, + }; + const char *skip = NULL; + const struct option test_options[] = { + OPT_STRING('s', "skip", &skip, "tests", "tests to skip"), + OPT_INCR('v', "verbose", &verbose, + "be more verbose (show symbol address, etc)"), + OPT_BOOLEAN('F', "dont-fork", &dont_fork, + "Do not fork for testcase"), + OPT_END() + }; + const char * const test_subcommands[] = { "list", NULL }; + struct intlist *skiplist = NULL; + int ret = hists__init(); + + if (ret < 0) + return ret; + + /* Unbuffered output */ + setvbuf(stdout, NULL, _IONBF, 0); + + argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0); + if (argc >= 1 && !strcmp(argv[0], "list")) + return perf_test__list(argc - 1, argv + 1); + + symbol_conf.priv_size = sizeof(int); + symbol_conf.sort_by_name = true; + symbol_conf.try_vmlinux_path = true; + + if (symbol__init(NULL) < 0) + return -1; + + if (skip != NULL) + skiplist = intlist__new(skip); + /* + * Tests that create BPF maps, for instance, need more than the 64K + * default: + */ + rlimit__bump_memlock(); + + return __cmd_test(argc, argv, skiplist); +} diff --git a/tools/perf/tests/clang.c b/tools/perf/tests/clang.c new file mode 100644 index 000000000..2577d3ed1 --- /dev/null +++ b/tools/perf/tests/clang.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include "c++/clang-c.h" +#include <linux/kernel.h> + +static struct { + int (*func)(void); + const char *desc; +} clang_testcase_table[] = { +#ifdef HAVE_LIBCLANGLLVM_SUPPORT + { + .func = test__clang_to_IR, + .desc = "builtin clang compile C source to IR", + }, + { + .func = test__clang_to_obj, + .desc = "builtin clang compile C source to ELF object", + }, +#endif +}; + +int test__clang_subtest_get_nr(void) +{ + return (int)ARRAY_SIZE(clang_testcase_table); +} + +const char *test__clang_subtest_get_desc(int i) +{ + if (i < 0 || i >= (int)ARRAY_SIZE(clang_testcase_table)) + return NULL; + return clang_testcase_table[i].desc; +} + +#ifndef HAVE_LIBCLANGLLVM_SUPPORT +int test__clang(struct test *test __maybe_unused, int i __maybe_unused) +{ + return TEST_SKIP; +} +#else +int test__clang(struct test *test __maybe_unused, int i) +{ + if (i < 0 || i >= (int)ARRAY_SIZE(clang_testcase_table)) + return TEST_FAIL; + return clang_testcase_table[i].func(); +} +#endif diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c new file mode 100644 index 000000000..035c91235 --- /dev/null +++ b/tools/perf/tests/code-reading.c @@ -0,0 +1,756 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <inttypes.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <sys/param.h> +#include <perf/cpumap.h> +#include <perf/evlist.h> +#include <perf/mmap.h> + +#include "debug.h" +#include "dso.h" +#include "env.h" +#include "parse-events.h" +#include "trace-event.h" +#include "evlist.h" +#include "evsel.h" +#include "thread_map.h" +#include "machine.h" +#include "map.h" +#include "symbol.h" +#include "event.h" +#include "record.h" +#include "util/mmap.h" +#include "util/synthetic-events.h" +#include "thread.h" + +#include "tests.h" + +#include <linux/ctype.h> + +#define BUFSZ 1024 +#define READLEN 128 + +struct state { + u64 done[1024]; + size_t done_cnt; +}; + +static unsigned int hex(char c) +{ + if (c >= '0' && c <= '9') + return c - '0'; + if (c >= 'a' && c <= 'f') + return c - 'a' + 10; + return c - 'A' + 10; +} + +static size_t read_objdump_chunk(const char **line, unsigned char **buf, + size_t *buf_len) +{ + size_t bytes_read = 0; + unsigned char *chunk_start = *buf; + + /* Read bytes */ + while (*buf_len > 0) { + char c1, c2; + + /* Get 2 hex digits */ + c1 = *(*line)++; + if (!isxdigit(c1)) + break; + c2 = *(*line)++; + if (!isxdigit(c2)) + break; + + /* Store byte and advance buf */ + **buf = (hex(c1) << 4) | hex(c2); + (*buf)++; + (*buf_len)--; + bytes_read++; + + /* End of chunk? */ + if (isspace(**line)) + break; + } + + /* + * objdump will display raw insn as LE if code endian + * is LE and bytes_per_chunk > 1. In that case reverse + * the chunk we just read. + * + * see disassemble_bytes() at binutils/objdump.c for details + * how objdump chooses display endian) + */ + if (bytes_read > 1 && !bigendian()) { + unsigned char *chunk_end = chunk_start + bytes_read - 1; + unsigned char tmp; + + while (chunk_start < chunk_end) { + tmp = *chunk_start; + *chunk_start = *chunk_end; + *chunk_end = tmp; + chunk_start++; + chunk_end--; + } + } + + return bytes_read; +} + +static size_t read_objdump_line(const char *line, unsigned char *buf, + size_t buf_len) +{ + const char *p; + size_t ret, bytes_read = 0; + + /* Skip to a colon */ + p = strchr(line, ':'); + if (!p) + return 0; + p++; + + /* Skip initial spaces */ + while (*p) { + if (!isspace(*p)) + break; + p++; + } + + do { + ret = read_objdump_chunk(&p, &buf, &buf_len); + bytes_read += ret; + p++; + } while (ret > 0); + + /* return number of successfully read bytes */ + return bytes_read; +} + +static int read_objdump_output(FILE *f, void *buf, size_t *len, u64 start_addr) +{ + char *line = NULL; + size_t line_len, off_last = 0; + ssize_t ret; + int err = 0; + u64 addr, last_addr = start_addr; + + while (off_last < *len) { + size_t off, read_bytes, written_bytes; + unsigned char tmp[BUFSZ]; + + ret = getline(&line, &line_len, f); + if (feof(f)) + break; + if (ret < 0) { + pr_debug("getline failed\n"); + err = -1; + break; + } + + /* read objdump data into temporary buffer */ + read_bytes = read_objdump_line(line, tmp, sizeof(tmp)); + if (!read_bytes) + continue; + + if (sscanf(line, "%"PRIx64, &addr) != 1) + continue; + if (addr < last_addr) { + pr_debug("addr going backwards, read beyond section?\n"); + break; + } + last_addr = addr; + + /* copy it from temporary buffer to 'buf' according + * to address on current objdump line */ + off = addr - start_addr; + if (off >= *len) + break; + written_bytes = MIN(read_bytes, *len - off); + memcpy(buf + off, tmp, written_bytes); + off_last = off + written_bytes; + } + + /* len returns number of bytes that could not be read */ + *len -= off_last; + + free(line); + + return err; +} + +static int read_via_objdump(const char *filename, u64 addr, void *buf, + size_t len) +{ + char cmd[PATH_MAX * 2]; + const char *fmt; + FILE *f; + int ret; + + fmt = "%s -z -d --start-address=0x%"PRIx64" --stop-address=0x%"PRIx64" %s"; + ret = snprintf(cmd, sizeof(cmd), fmt, "objdump", addr, addr + len, + filename); + if (ret <= 0 || (size_t)ret >= sizeof(cmd)) + return -1; + + pr_debug("Objdump command is: %s\n", cmd); + + /* Ignore objdump errors */ + strcat(cmd, " 2>/dev/null"); + + f = popen(cmd, "r"); + if (!f) { + pr_debug("popen failed\n"); + return -1; + } + + ret = read_objdump_output(f, buf, &len, addr); + if (len) { + pr_debug("objdump read too few bytes: %zd\n", len); + if (!ret) + ret = len; + } + + pclose(f); + + return ret; +} + +static void dump_buf(unsigned char *buf, size_t len) +{ + size_t i; + + for (i = 0; i < len; i++) { + pr_debug("0x%02x ", buf[i]); + if (i % 16 == 15) + pr_debug("\n"); + } + pr_debug("\n"); +} + +static int read_object_code(u64 addr, size_t len, u8 cpumode, + struct thread *thread, struct state *state) +{ + struct addr_location al; + unsigned char buf1[BUFSZ]; + unsigned char buf2[BUFSZ]; + size_t ret_len; + u64 objdump_addr; + const char *objdump_name; + char decomp_name[KMOD_DECOMP_LEN]; + bool decomp = false; + int ret; + + pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr); + + if (!thread__find_map(thread, cpumode, addr, &al) || !al.map->dso) { + if (cpumode == PERF_RECORD_MISC_HYPERVISOR) { + pr_debug("Hypervisor address can not be resolved - skipping\n"); + return 0; + } + + pr_debug("thread__find_map failed\n"); + return -1; + } + + pr_debug("File is: %s\n", al.map->dso->long_name); + + if (al.map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS && + !dso__is_kcore(al.map->dso)) { + pr_debug("Unexpected kernel address - skipping\n"); + return 0; + } + + pr_debug("On file address is: %#"PRIx64"\n", al.addr); + + if (len > BUFSZ) + len = BUFSZ; + + /* Do not go off the map */ + if (addr + len > al.map->end) + len = al.map->end - addr; + + /* Read the object code using perf */ + ret_len = dso__data_read_offset(al.map->dso, thread->maps->machine, + al.addr, buf1, len); + if (ret_len != len) { + pr_debug("dso__data_read_offset failed\n"); + return -1; + } + + /* + * Converting addresses for use by objdump requires more information. + * map__load() does that. See map__rip_2objdump() for details. + */ + if (map__load(al.map)) + return -1; + + /* objdump struggles with kcore - try each map only once */ + if (dso__is_kcore(al.map->dso)) { + size_t d; + + for (d = 0; d < state->done_cnt; d++) { + if (state->done[d] == al.map->start) { + pr_debug("kcore map tested already"); + pr_debug(" - skipping\n"); + return 0; + } + } + if (state->done_cnt >= ARRAY_SIZE(state->done)) { + pr_debug("Too many kcore maps - skipping\n"); + return 0; + } + state->done[state->done_cnt++] = al.map->start; + } + + objdump_name = al.map->dso->long_name; + if (dso__needs_decompress(al.map->dso)) { + if (dso__decompress_kmodule_path(al.map->dso, objdump_name, + decomp_name, + sizeof(decomp_name)) < 0) { + pr_debug("decompression failed\n"); + return -1; + } + + decomp = true; + objdump_name = decomp_name; + } + + /* Read the object code using objdump */ + objdump_addr = map__rip_2objdump(al.map, al.addr); + ret = read_via_objdump(objdump_name, objdump_addr, buf2, len); + + if (decomp) + unlink(objdump_name); + + if (ret > 0) { + /* + * The kernel maps are inaccurate - assume objdump is right in + * that case. + */ + if (cpumode == PERF_RECORD_MISC_KERNEL || + cpumode == PERF_RECORD_MISC_GUEST_KERNEL) { + len -= ret; + if (len) { + pr_debug("Reducing len to %zu\n", len); + } else if (dso__is_kcore(al.map->dso)) { + /* + * objdump cannot handle very large segments + * that may be found in kcore. + */ + pr_debug("objdump failed for kcore"); + pr_debug(" - skipping\n"); + return 0; + } else { + return -1; + } + } + } + if (ret < 0) { + pr_debug("read_via_objdump failed\n"); + return -1; + } + + /* The results should be identical */ + if (memcmp(buf1, buf2, len)) { + pr_debug("Bytes read differ from those read by objdump\n"); + pr_debug("buf1 (dso):\n"); + dump_buf(buf1, len); + pr_debug("buf2 (objdump):\n"); + dump_buf(buf2, len); + return -1; + } + pr_debug("Bytes read match those read by objdump\n"); + + return 0; +} + +static int process_sample_event(struct machine *machine, + struct evlist *evlist, + union perf_event *event, struct state *state) +{ + struct perf_sample sample; + struct thread *thread; + int ret; + + if (perf_evlist__parse_sample(evlist, event, &sample)) { + pr_debug("perf_evlist__parse_sample failed\n"); + return -1; + } + + thread = machine__findnew_thread(machine, sample.pid, sample.tid); + if (!thread) { + pr_debug("machine__findnew_thread failed\n"); + return -1; + } + + ret = read_object_code(sample.ip, READLEN, sample.cpumode, thread, state); + thread__put(thread); + return ret; +} + +static int process_event(struct machine *machine, struct evlist *evlist, + union perf_event *event, struct state *state) +{ + if (event->header.type == PERF_RECORD_SAMPLE) + return process_sample_event(machine, evlist, event, state); + + if (event->header.type == PERF_RECORD_THROTTLE || + event->header.type == PERF_RECORD_UNTHROTTLE) + return 0; + + if (event->header.type < PERF_RECORD_MAX) { + int ret; + + ret = machine__process_event(machine, event, NULL); + if (ret < 0) + pr_debug("machine__process_event failed, event type %u\n", + event->header.type); + return ret; + } + + return 0; +} + +static int process_events(struct machine *machine, struct evlist *evlist, + struct state *state) +{ + union perf_event *event; + struct mmap *md; + int i, ret; + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + ret = process_event(machine, evlist, event, state); + perf_mmap__consume(&md->core); + if (ret < 0) + return ret; + } + perf_mmap__read_done(&md->core); + } + return 0; +} + +static int comp(const void *a, const void *b) +{ + return *(int *)a - *(int *)b; +} + +static void do_sort_something(void) +{ + int buf[40960], i; + + for (i = 0; i < (int)ARRAY_SIZE(buf); i++) + buf[i] = ARRAY_SIZE(buf) - i - 1; + + qsort(buf, ARRAY_SIZE(buf), sizeof(int), comp); + + for (i = 0; i < (int)ARRAY_SIZE(buf); i++) { + if (buf[i] != i) { + pr_debug("qsort failed\n"); + break; + } + } +} + +static void sort_something(void) +{ + int i; + + for (i = 0; i < 10; i++) + do_sort_something(); +} + +static void syscall_something(void) +{ + int pipefd[2]; + int i; + + for (i = 0; i < 1000; i++) { + if (pipe(pipefd) < 0) { + pr_debug("pipe failed\n"); + break; + } + close(pipefd[1]); + close(pipefd[0]); + } +} + +static void fs_something(void) +{ + const char *test_file_name = "temp-perf-code-reading-test-file--"; + FILE *f; + int i; + + for (i = 0; i < 1000; i++) { + f = fopen(test_file_name, "w+"); + if (f) { + fclose(f); + unlink(test_file_name); + } + } +} + +#ifdef __s390x__ +#include "header.h" // for get_cpuid() +#endif + +static const char *do_determine_event(bool excl_kernel) +{ + const char *event = excl_kernel ? "cycles:u" : "cycles"; + +#ifdef __s390x__ + char cpuid[128], model[16], model_c[16], cpum_cf_v[16]; + unsigned int family; + int ret, cpum_cf_a; + + if (get_cpuid(cpuid, sizeof(cpuid))) + goto out_clocks; + ret = sscanf(cpuid, "%*[^,],%u,%[^,],%[^,],%[^,],%x", &family, model_c, + model, cpum_cf_v, &cpum_cf_a); + if (ret != 5) /* Not available */ + goto out_clocks; + if (excl_kernel && (cpum_cf_a & 4)) + return event; + if (!excl_kernel && (cpum_cf_a & 2)) + return event; + + /* Fall through: missing authorization */ +out_clocks: + event = excl_kernel ? "cpu-clock:u" : "cpu-clock"; + +#endif + return event; +} + +static void do_something(void) +{ + fs_something(); + + sort_something(); + + syscall_something(); +} + +enum { + TEST_CODE_READING_OK, + TEST_CODE_READING_NO_VMLINUX, + TEST_CODE_READING_NO_KCORE, + TEST_CODE_READING_NO_ACCESS, + TEST_CODE_READING_NO_KERNEL_OBJ, +}; + +static int do_test_code_reading(bool try_kcore) +{ + struct machine *machine; + struct thread *thread; + struct record_opts opts = { + .mmap_pages = UINT_MAX, + .user_freq = UINT_MAX, + .user_interval = ULLONG_MAX, + .freq = 500, + .target = { + .uses_mmap = true, + }, + }; + struct state state = { + .done_cnt = 0, + }; + struct perf_thread_map *threads = NULL; + struct perf_cpu_map *cpus = NULL; + struct evlist *evlist = NULL; + struct evsel *evsel = NULL; + int err = -1, ret; + pid_t pid; + struct map *map; + bool have_vmlinux, have_kcore, excl_kernel = false; + + pid = getpid(); + + machine = machine__new_host(); + machine->env = &perf_env; + + ret = machine__create_kernel_maps(machine); + if (ret < 0) { + pr_debug("machine__create_kernel_maps failed\n"); + goto out_err; + } + + /* Force the use of kallsyms instead of vmlinux to try kcore */ + if (try_kcore) + symbol_conf.kallsyms_name = "/proc/kallsyms"; + + /* Load kernel map */ + map = machine__kernel_map(machine); + ret = map__load(map); + if (ret < 0) { + pr_debug("map__load failed\n"); + goto out_err; + } + have_vmlinux = dso__is_vmlinux(map->dso); + have_kcore = dso__is_kcore(map->dso); + + /* 2nd time through we just try kcore */ + if (try_kcore && !have_kcore) + return TEST_CODE_READING_NO_KCORE; + + /* No point getting kernel events if there is no kernel object */ + if (!have_vmlinux && !have_kcore) + excl_kernel = true; + + threads = thread_map__new_by_tid(pid); + if (!threads) { + pr_debug("thread_map__new_by_tid failed\n"); + goto out_err; + } + + ret = perf_event__synthesize_thread_map(NULL, threads, + perf_event__process, machine, false); + if (ret < 0) { + pr_debug("perf_event__synthesize_thread_map failed\n"); + goto out_err; + } + + thread = machine__findnew_thread(machine, pid, pid); + if (!thread) { + pr_debug("machine__findnew_thread failed\n"); + goto out_put; + } + + cpus = perf_cpu_map__new(NULL); + if (!cpus) { + pr_debug("perf_cpu_map__new failed\n"); + goto out_put; + } + + while (1) { + const char *str; + + evlist = evlist__new(); + if (!evlist) { + pr_debug("perf_evlist__new failed\n"); + goto out_put; + } + + perf_evlist__set_maps(&evlist->core, cpus, threads); + + str = do_determine_event(excl_kernel); + pr_debug("Parsing event '%s'\n", str); + ret = parse_events(evlist, str, NULL); + if (ret < 0) { + pr_debug("parse_events failed\n"); + goto out_put; + } + + perf_evlist__config(evlist, &opts, NULL); + + evsel = evlist__first(evlist); + + evsel->core.attr.comm = 1; + evsel->core.attr.disabled = 1; + evsel->core.attr.enable_on_exec = 0; + + ret = evlist__open(evlist); + if (ret < 0) { + if (!excl_kernel) { + excl_kernel = true; + /* + * Both cpus and threads are now owned by evlist + * and will be freed by following perf_evlist__set_maps + * call. Getting refference to keep them alive. + */ + perf_cpu_map__get(cpus); + perf_thread_map__get(threads); + perf_evlist__set_maps(&evlist->core, NULL, NULL); + evlist__delete(evlist); + evlist = NULL; + continue; + } + + if (verbose > 0) { + char errbuf[512]; + evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf)); + pr_debug("perf_evlist__open() failed!\n%s\n", errbuf); + } + + goto out_put; + } + break; + } + + ret = evlist__mmap(evlist, UINT_MAX); + if (ret < 0) { + pr_debug("evlist__mmap failed\n"); + goto out_put; + } + + evlist__enable(evlist); + + do_something(); + + evlist__disable(evlist); + + ret = process_events(machine, evlist, &state); + if (ret < 0) + goto out_put; + + if (!have_vmlinux && !have_kcore && !try_kcore) + err = TEST_CODE_READING_NO_KERNEL_OBJ; + else if (!have_vmlinux && !try_kcore) + err = TEST_CODE_READING_NO_VMLINUX; + else if (excl_kernel) + err = TEST_CODE_READING_NO_ACCESS; + else + err = TEST_CODE_READING_OK; +out_put: + thread__put(thread); +out_err: + + if (evlist) { + evlist__delete(evlist); + } else { + perf_cpu_map__put(cpus); + perf_thread_map__put(threads); + } + machine__delete_threads(machine); + machine__delete(machine); + + return err; +} + +int test__code_reading(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int ret; + + ret = do_test_code_reading(false); + if (!ret) + ret = do_test_code_reading(true); + + switch (ret) { + case TEST_CODE_READING_OK: + return 0; + case TEST_CODE_READING_NO_VMLINUX: + pr_debug("no vmlinux\n"); + return 0; + case TEST_CODE_READING_NO_KCORE: + pr_debug("no kcore\n"); + return 0; + case TEST_CODE_READING_NO_ACCESS: + pr_debug("no access\n"); + return 0; + case TEST_CODE_READING_NO_KERNEL_OBJ: + pr_debug("no kernel obj\n"); + return 0; + default: + return -1; + }; +} diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c new file mode 100644 index 000000000..29c793ac7 --- /dev/null +++ b/tools/perf/tests/cpumap.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include <stdio.h> +#include "cpumap.h" +#include "event.h" +#include "util/synthetic-events.h" +#include <string.h> +#include <linux/bitops.h> +#include <perf/cpumap.h> +#include "debug.h" + +struct machine; + +static int process_event_mask(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_cpu_map *map_event = &event->cpu_map; + struct perf_record_record_cpu_map *mask; + struct perf_record_cpu_map_data *data; + struct perf_cpu_map *map; + int i; + + data = &map_event->data; + + TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK); + + mask = (struct perf_record_record_cpu_map *)data->data; + + TEST_ASSERT_VAL("wrong nr", mask->nr == 1); + + for (i = 0; i < 20; i++) { + TEST_ASSERT_VAL("wrong cpu", test_bit(i, mask->mask)); + } + + map = cpu_map__new_data(data); + TEST_ASSERT_VAL("wrong nr", map->nr == 20); + + for (i = 0; i < 20; i++) { + TEST_ASSERT_VAL("wrong cpu", map->map[i] == i); + } + + perf_cpu_map__put(map); + return 0; +} + +static int process_event_cpus(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_cpu_map *map_event = &event->cpu_map; + struct cpu_map_entries *cpus; + struct perf_record_cpu_map_data *data; + struct perf_cpu_map *map; + + data = &map_event->data; + + TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS); + + cpus = (struct cpu_map_entries *)data->data; + + TEST_ASSERT_VAL("wrong nr", cpus->nr == 2); + TEST_ASSERT_VAL("wrong cpu", cpus->cpu[0] == 1); + TEST_ASSERT_VAL("wrong cpu", cpus->cpu[1] == 256); + + map = cpu_map__new_data(data); + TEST_ASSERT_VAL("wrong nr", map->nr == 2); + TEST_ASSERT_VAL("wrong cpu", map->map[0] == 1); + TEST_ASSERT_VAL("wrong cpu", map->map[1] == 256); + TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1); + perf_cpu_map__put(map); + return 0; +} + + +int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_cpu_map *cpus; + + /* This one is better stores in mask. */ + cpus = perf_cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19"); + + TEST_ASSERT_VAL("failed to synthesize map", + !perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL)); + + perf_cpu_map__put(cpus); + + /* This one is better stores in cpu values. */ + cpus = perf_cpu_map__new("1,256"); + + TEST_ASSERT_VAL("failed to synthesize map", + !perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL)); + + perf_cpu_map__put(cpus); + return 0; +} + +static int cpu_map_print(const char *str) +{ + struct perf_cpu_map *map = perf_cpu_map__new(str); + char buf[100]; + + if (!map) + return -1; + + cpu_map__snprint(map, buf, sizeof(buf)); + return !strcmp(buf, str); +} + +int test__cpu_map_print(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1")); + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5")); + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40")); + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5")); + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37")); + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37")); + TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40")); + return 0; +} + +int test__cpu_map_merge(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_cpu_map *a = perf_cpu_map__new("4,2,1"); + struct perf_cpu_map *b = perf_cpu_map__new("4,5,7"); + struct perf_cpu_map *c = perf_cpu_map__merge(a, b); + char buf[100]; + + TEST_ASSERT_VAL("failed to merge map: bad nr", c->nr == 5); + cpu_map__snprint(c, buf, sizeof(buf)); + TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "1-2,4-5,7")); + perf_cpu_map__put(b); + perf_cpu_map__put(c); + return 0; +} diff --git a/tools/perf/tests/demangle-java-test.c b/tools/perf/tests/demangle-java-test.c new file mode 100644 index 000000000..8f3b90832 --- /dev/null +++ b/tools/perf/tests/demangle-java-test.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include "tests.h" +#include "session.h" +#include "debug.h" +#include "demangle-java.h" + +int test__demangle_java(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int ret = TEST_OK; + char *buf = NULL; + size_t i; + + struct { + const char *mangled, *demangled; + } test_cases[] = { + { "Ljava/lang/StringLatin1;equals([B[B)Z", + "boolean java.lang.StringLatin1.equals(byte[], byte[])" }, + { "Ljava/util/zip/ZipUtils;CENSIZ([BI)J", + "long java.util.zip.ZipUtils.CENSIZ(byte[], int)" }, + { "Ljava/util/regex/Pattern$BmpCharProperty;match(Ljava/util/regex/Matcher;ILjava/lang/CharSequence;)Z", + "boolean java.util.regex.Pattern$BmpCharProperty.match(java.util.regex.Matcher, int, java.lang.CharSequence)" }, + { "Ljava/lang/AbstractStringBuilder;appendChars(Ljava/lang/String;II)V", + "void java.lang.AbstractStringBuilder.appendChars(java.lang.String, int, int)" }, + { "Ljava/lang/Object;<init>()V", + "void java.lang.Object<init>()" }, + }; + + for (i = 0; i < sizeof(test_cases) / sizeof(test_cases[0]); i++) { + buf = java_demangle_sym(test_cases[i].mangled, 0); + if (strcmp(buf, test_cases[i].demangled)) { + pr_debug("FAILED: %s: %s != %s\n", test_cases[i].mangled, + buf, test_cases[i].demangled); + ret = TEST_FAIL; + } + free(buf); + } + + return ret; +} diff --git a/tools/perf/tests/dso-data.c b/tools/perf/tests/dso-data.c new file mode 100644 index 000000000..627c1aaf1 --- /dev/null +++ b/tools/perf/tests/dso-data.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <dirent.h> +#include <stdlib.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <string.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <api/fs/fs.h> +#include "dso.h" +#include "machine.h" +#include "symbol.h" +#include "tests.h" +#include "debug.h" + +static char *test_file(int size) +{ +#define TEMPL "/tmp/perf-test-XXXXXX" + static char buf_templ[sizeof(TEMPL)]; + char *templ = buf_templ; + int fd, i; + unsigned char *buf; + + strcpy(buf_templ, TEMPL); +#undef TEMPL + + fd = mkstemp(templ); + if (fd < 0) { + perror("mkstemp failed"); + return NULL; + } + + buf = malloc(size); + if (!buf) { + close(fd); + return NULL; + } + + for (i = 0; i < size; i++) + buf[i] = (unsigned char) ((int) i % 10); + + if (size != write(fd, buf, size)) + templ = NULL; + + free(buf); + close(fd); + return templ; +} + +#define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20) + +struct test_data_offset { + off_t offset; + u8 data[10]; + int size; +}; + +struct test_data_offset offsets[] = { + /* Fill first cache page. */ + { + .offset = 10, + .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, + .size = 10, + }, + /* Read first cache page. */ + { + .offset = 10, + .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, + .size = 10, + }, + /* Fill cache boundary pages. */ + { + .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10, + .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, + .size = 10, + }, + /* Read cache boundary pages. */ + { + .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10, + .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, + .size = 10, + }, + /* Fill final cache page. */ + { + .offset = TEST_FILE_SIZE - 10, + .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, + .size = 10, + }, + /* Read final cache page. */ + { + .offset = TEST_FILE_SIZE - 10, + .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, + .size = 10, + }, + /* Read final cache page. */ + { + .offset = TEST_FILE_SIZE - 3, + .data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 }, + .size = 3, + }, +}; + +/* move it from util/dso.c for compatibility */ +static int dso__data_fd(struct dso *dso, struct machine *machine) +{ + int fd = dso__data_get_fd(dso, machine); + + if (fd >= 0) + dso__data_put_fd(dso); + + return fd; +} + +int test__dso_data(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machine machine; + struct dso *dso; + char *file = test_file(TEST_FILE_SIZE); + size_t i; + + TEST_ASSERT_VAL("No test file", file); + + memset(&machine, 0, sizeof(machine)); + + dso = dso__new((const char *)file); + + TEST_ASSERT_VAL("Failed to access to dso", + dso__data_fd(dso, &machine) >= 0); + + /* Basic 10 bytes tests. */ + for (i = 0; i < ARRAY_SIZE(offsets); i++) { + struct test_data_offset *data = &offsets[i]; + ssize_t size; + u8 buf[10]; + + memset(buf, 0, 10); + size = dso__data_read_offset(dso, &machine, data->offset, + buf, 10); + + TEST_ASSERT_VAL("Wrong size", size == data->size); + TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10)); + } + + /* Read cross multiple cache pages. */ + { + ssize_t size; + int c; + u8 *buf; + + buf = malloc(TEST_FILE_SIZE); + TEST_ASSERT_VAL("ENOMEM\n", buf); + + /* First iteration to fill caches, second one to read them. */ + for (c = 0; c < 2; c++) { + memset(buf, 0, TEST_FILE_SIZE); + size = dso__data_read_offset(dso, &machine, 10, + buf, TEST_FILE_SIZE); + + TEST_ASSERT_VAL("Wrong size", + size == (TEST_FILE_SIZE - 10)); + + for (i = 0; i < (size_t)size; i++) + TEST_ASSERT_VAL("Wrong data", + buf[i] == (i % 10)); + } + + free(buf); + } + + dso__put(dso); + unlink(file); + return 0; +} + +static long open_files_cnt(void) +{ + char path[PATH_MAX]; + struct dirent *dent; + DIR *dir; + long nr = 0; + + scnprintf(path, PATH_MAX, "%s/self/fd", procfs__mountpoint()); + pr_debug("fd path: %s\n", path); + + dir = opendir(path); + TEST_ASSERT_VAL("failed to open fd directory", dir); + + while ((dent = readdir(dir)) != NULL) { + if (!strcmp(dent->d_name, ".") || + !strcmp(dent->d_name, "..")) + continue; + + nr++; + } + + closedir(dir); + return nr - 1; +} + +static struct dso **dsos; + +static int dsos__create(int cnt, int size) +{ + int i; + + dsos = malloc(sizeof(*dsos) * cnt); + TEST_ASSERT_VAL("failed to alloc dsos array", dsos); + + for (i = 0; i < cnt; i++) { + char *file; + + file = test_file(size); + TEST_ASSERT_VAL("failed to get dso file", file); + + dsos[i] = dso__new(file); + TEST_ASSERT_VAL("failed to get dso", dsos[i]); + } + + return 0; +} + +static void dsos__delete(int cnt) +{ + int i; + + for (i = 0; i < cnt; i++) { + struct dso *dso = dsos[i]; + + unlink(dso->name); + dso__put(dso); + } + + free(dsos); +} + +static int set_fd_limit(int n) +{ + struct rlimit rlim; + + if (getrlimit(RLIMIT_NOFILE, &rlim)) + return -1; + + pr_debug("file limit %ld, new %d\n", (long) rlim.rlim_cur, n); + + rlim.rlim_cur = n; + return setrlimit(RLIMIT_NOFILE, &rlim); +} + +int test__dso_data_cache(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machine machine; + long nr_end, nr = open_files_cnt(); + int dso_cnt, limit, i, fd; + + /* Rest the internal dso open counter limit. */ + reset_fd_limit(); + + memset(&machine, 0, sizeof(machine)); + + /* set as system limit */ + limit = nr * 4; + TEST_ASSERT_VAL("failed to set file limit", !set_fd_limit(limit)); + + /* and this is now our dso open FDs limit */ + dso_cnt = limit / 2; + TEST_ASSERT_VAL("failed to create dsos\n", + !dsos__create(dso_cnt, TEST_FILE_SIZE)); + + for (i = 0; i < (dso_cnt - 1); i++) { + struct dso *dso = dsos[i]; + + /* + * Open dsos via dso__data_fd(), it opens the data + * file and keep it open (unless open file limit). + */ + fd = dso__data_fd(dso, &machine); + TEST_ASSERT_VAL("failed to get fd", fd > 0); + + if (i % 2) { + #define BUFSIZE 10 + u8 buf[BUFSIZE]; + ssize_t n; + + n = dso__data_read_offset(dso, &machine, 0, buf, BUFSIZE); + TEST_ASSERT_VAL("failed to read dso", n == BUFSIZE); + } + } + + /* verify the first one is already open */ + TEST_ASSERT_VAL("dsos[0] is not open", dsos[0]->data.fd != -1); + + /* open +1 dso to reach the allowed limit */ + fd = dso__data_fd(dsos[i], &machine); + TEST_ASSERT_VAL("failed to get fd", fd > 0); + + /* should force the first one to be closed */ + TEST_ASSERT_VAL("failed to close dsos[0]", dsos[0]->data.fd == -1); + + /* cleanup everything */ + dsos__delete(dso_cnt); + + /* Make sure we did not leak any file descriptor. */ + nr_end = open_files_cnt(); + pr_debug("nr start %ld, nr stop %ld\n", nr, nr_end); + TEST_ASSERT_VAL("failed leaking files", nr == nr_end); + return 0; +} + +int test__dso_data_reopen(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machine machine; + long nr_end, nr = open_files_cnt(); + int fd, fd_extra; + +#define dso_0 (dsos[0]) +#define dso_1 (dsos[1]) +#define dso_2 (dsos[2]) + + /* Rest the internal dso open counter limit. */ + reset_fd_limit(); + + memset(&machine, 0, sizeof(machine)); + + /* + * Test scenario: + * - create 3 dso objects + * - set process file descriptor limit to current + * files count + 3 + * - test that the first dso gets closed when we + * reach the files count limit + */ + + /* Make sure we are able to open 3 fds anyway */ + TEST_ASSERT_VAL("failed to set file limit", + !set_fd_limit((nr + 3))); + + TEST_ASSERT_VAL("failed to create dsos\n", !dsos__create(3, TEST_FILE_SIZE)); + + /* open dso_0 */ + fd = dso__data_fd(dso_0, &machine); + TEST_ASSERT_VAL("failed to get fd", fd > 0); + + /* open dso_1 */ + fd = dso__data_fd(dso_1, &machine); + TEST_ASSERT_VAL("failed to get fd", fd > 0); + + /* + * open extra file descriptor and we just + * reached the files count limit + */ + fd_extra = open("/dev/null", O_RDONLY); + TEST_ASSERT_VAL("failed to open extra fd", fd_extra > 0); + + /* open dso_2 */ + fd = dso__data_fd(dso_2, &machine); + TEST_ASSERT_VAL("failed to get fd", fd > 0); + + /* + * dso_0 should get closed, because we reached + * the file descriptor limit + */ + TEST_ASSERT_VAL("failed to close dso_0", dso_0->data.fd == -1); + + /* open dso_0 */ + fd = dso__data_fd(dso_0, &machine); + TEST_ASSERT_VAL("failed to get fd", fd > 0); + + /* + * dso_1 should get closed, because we reached + * the file descriptor limit + */ + TEST_ASSERT_VAL("failed to close dso_1", dso_1->data.fd == -1); + + /* cleanup everything */ + close(fd_extra); + dsos__delete(3); + + /* Make sure we did not leak any file descriptor. */ + nr_end = open_files_cnt(); + pr_debug("nr start %ld, nr stop %ld\n", nr, nr_end); + TEST_ASSERT_VAL("failed leaking files", nr == nr_end); + return 0; +} diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c new file mode 100644 index 000000000..83638097c --- /dev/null +++ b/tools/perf/tests/dwarf-unwind.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/types.h> +#include <linux/zalloc.h> +#include <inttypes.h> +#include <limits.h> +#include <unistd.h> +#include "tests.h" +#include "debug.h" +#include "machine.h" +#include "event.h" +#include "../util/unwind.h" +#include "perf_regs.h" +#include "map.h" +#include "symbol.h" +#include "thread.h" +#include "callchain.h" +#include "util/synthetic-events.h" + +#if defined (__x86_64__) || defined (__i386__) || defined (__powerpc__) +#include "arch-tests.h" +#endif + +/* For bsearch. We try to unwind functions in shared object. */ +#include <stdlib.h> + +static int mmap_handler(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample, + struct machine *machine) +{ + return machine__process_mmap2_event(machine, event, sample); +} + +static int init_live_machine(struct machine *machine) +{ + union perf_event event; + pid_t pid = getpid(); + + memset(&event, 0, sizeof(event)); + return perf_event__synthesize_mmap_events(NULL, &event, pid, pid, + mmap_handler, machine, true); +} + +/* + * We need to keep these functions global, despite the + * fact that they are used only locally in this object, + * in order to keep them around even if the binary is + * stripped. If they are gone, the unwind check for + * symbol fails. + */ +int test_dwarf_unwind__thread(struct thread *thread); +int test_dwarf_unwind__compare(void *p1, void *p2); +int test_dwarf_unwind__krava_3(struct thread *thread); +int test_dwarf_unwind__krava_2(struct thread *thread); +int test_dwarf_unwind__krava_1(struct thread *thread); + +#define MAX_STACK 8 + +static int unwind_entry(struct unwind_entry *entry, void *arg) +{ + unsigned long *cnt = (unsigned long *) arg; + char *symbol = entry->ms.sym ? entry->ms.sym->name : NULL; + static const char *funcs[MAX_STACK] = { + "test__arch_unwind_sample", + "test_dwarf_unwind__thread", + "test_dwarf_unwind__compare", + "bsearch", + "test_dwarf_unwind__krava_3", + "test_dwarf_unwind__krava_2", + "test_dwarf_unwind__krava_1", + "test__dwarf_unwind" + }; + /* + * The funcs[MAX_STACK] array index, based on the + * callchain order setup. + */ + int idx = callchain_param.order == ORDER_CALLER ? + MAX_STACK - *cnt - 1 : *cnt; + + if (*cnt >= MAX_STACK) { + pr_debug("failed: crossed the max stack value %d\n", MAX_STACK); + return -1; + } + + if (!symbol) { + pr_debug("failed: got unresolved address 0x%" PRIx64 "\n", + entry->ip); + return -1; + } + + (*cnt)++; + pr_debug("got: %s 0x%" PRIx64 ", expecting %s\n", + symbol, entry->ip, funcs[idx]); + return strcmp((const char *) symbol, funcs[idx]); +} + +noinline int test_dwarf_unwind__thread(struct thread *thread) +{ + struct perf_sample sample; + unsigned long cnt = 0; + int err = -1; + + memset(&sample, 0, sizeof(sample)); + + if (test__arch_unwind_sample(&sample, thread)) { + pr_debug("failed to get unwind sample\n"); + goto out; + } + + err = unwind__get_entries(unwind_entry, &cnt, thread, + &sample, MAX_STACK); + if (err) + pr_debug("unwind failed\n"); + else if (cnt != MAX_STACK) { + pr_debug("got wrong number of stack entries %lu != %d\n", + cnt, MAX_STACK); + err = -1; + } + + out: + zfree(&sample.user_stack.data); + zfree(&sample.user_regs.regs); + return err; +} + +static int global_unwind_retval = -INT_MAX; + +noinline int test_dwarf_unwind__compare(void *p1, void *p2) +{ + /* Any possible value should be 'thread' */ + struct thread *thread = *(struct thread **)p1; + + if (global_unwind_retval == -INT_MAX) { + /* Call unwinder twice for both callchain orders. */ + callchain_param.order = ORDER_CALLER; + + global_unwind_retval = test_dwarf_unwind__thread(thread); + if (!global_unwind_retval) { + callchain_param.order = ORDER_CALLEE; + global_unwind_retval = test_dwarf_unwind__thread(thread); + } + } + + return p1 - p2; +} + +noinline int test_dwarf_unwind__krava_3(struct thread *thread) +{ + struct thread *array[2] = {thread, thread}; + void *fp = &bsearch; + /* + * make _bsearch a volatile function pointer to + * prevent potential optimization, which may expand + * bsearch and call compare directly from this function, + * instead of libc shared object. + */ + void *(*volatile _bsearch)(void *, void *, size_t, + size_t, int (*)(void *, void *)); + + _bsearch = fp; + _bsearch(array, &thread, 2, sizeof(struct thread **), + test_dwarf_unwind__compare); + return global_unwind_retval; +} + +noinline int test_dwarf_unwind__krava_2(struct thread *thread) +{ + return test_dwarf_unwind__krava_3(thread); +} + +noinline int test_dwarf_unwind__krava_1(struct thread *thread) +{ + return test_dwarf_unwind__krava_2(thread); +} + +int test__dwarf_unwind(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machine *machine; + struct thread *thread; + int err = -1; + + machine = machine__new_host(); + if (!machine) { + pr_err("Could not get machine\n"); + return -1; + } + + if (machine__create_kernel_maps(machine)) { + pr_err("Failed to create kernel maps\n"); + return -1; + } + + callchain_param.record_mode = CALLCHAIN_DWARF; + dwarf_callchain_users = true; + + if (init_live_machine(machine)) { + pr_err("Could not init machine\n"); + goto out; + } + + if (verbose > 1) + machine__fprintf(machine, stderr); + + thread = machine__find_thread(machine, getpid(), getpid()); + if (!thread) { + pr_err("Could not get thread\n"); + goto out; + } + + err = test_dwarf_unwind__krava_1(thread); + thread__put(thread); + + out: + machine__delete_threads(machine); + machine__delete(machine); + return err; +} diff --git a/tools/perf/tests/event-times.c b/tools/perf/tests/event-times.c new file mode 100644 index 000000000..db68894a6 --- /dev/null +++ b/tools/perf/tests/event-times.c @@ -0,0 +1,241 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/string.h> +#include <errno.h> +#include <inttypes.h> +#include <string.h> +#include <sys/wait.h> +#include <perf/cpumap.h> +#include "tests.h" +#include "evlist.h" +#include "evsel.h" +#include "debug.h" +#include "parse-events.h" +#include "thread_map.h" +#include "target.h" + +static int attach__enable_on_exec(struct evlist *evlist) +{ + struct evsel *evsel = evlist__last(evlist); + struct target target = { + .uid = UINT_MAX, + }; + const char *argv[] = { "true", NULL, }; + char sbuf[STRERR_BUFSIZE]; + int err; + + pr_debug("attaching to spawned child, enable on exec\n"); + + err = perf_evlist__create_maps(evlist, &target); + if (err < 0) { + pr_debug("Not enough memory to create thread/cpu maps\n"); + return err; + } + + err = perf_evlist__prepare_workload(evlist, &target, argv, false, NULL); + if (err < 0) { + pr_debug("Couldn't run the workload!\n"); + return err; + } + + evsel->core.attr.enable_on_exec = 1; + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + return err; + } + + return perf_evlist__start_workload(evlist) == 1 ? TEST_OK : TEST_FAIL; +} + +static int detach__enable_on_exec(struct evlist *evlist) +{ + waitpid(evlist->workload.pid, NULL, 0); + return 0; +} + +static int attach__current_disabled(struct evlist *evlist) +{ + struct evsel *evsel = evlist__last(evlist); + struct perf_thread_map *threads; + int err; + + pr_debug("attaching to current thread as disabled\n"); + + threads = thread_map__new(-1, getpid(), UINT_MAX); + if (threads == NULL) { + pr_debug("thread_map__new\n"); + return -1; + } + + evsel->core.attr.disabled = 1; + + err = evsel__open_per_thread(evsel, threads); + if (err) { + pr_debug("Failed to open event cpu-clock:u\n"); + return err; + } + + perf_thread_map__put(threads); + return evsel__enable(evsel) == 0 ? TEST_OK : TEST_FAIL; +} + +static int attach__current_enabled(struct evlist *evlist) +{ + struct evsel *evsel = evlist__last(evlist); + struct perf_thread_map *threads; + int err; + + pr_debug("attaching to current thread as enabled\n"); + + threads = thread_map__new(-1, getpid(), UINT_MAX); + if (threads == NULL) { + pr_debug("failed to call thread_map__new\n"); + return -1; + } + + err = evsel__open_per_thread(evsel, threads); + + perf_thread_map__put(threads); + return err == 0 ? TEST_OK : TEST_FAIL; +} + +static int detach__disable(struct evlist *evlist) +{ + struct evsel *evsel = evlist__last(evlist); + + return evsel__enable(evsel); +} + +static int attach__cpu_disabled(struct evlist *evlist) +{ + struct evsel *evsel = evlist__last(evlist); + struct perf_cpu_map *cpus; + int err; + + pr_debug("attaching to CPU 0 as enabled\n"); + + cpus = perf_cpu_map__new("0"); + if (cpus == NULL) { + pr_debug("failed to call perf_cpu_map__new\n"); + return -1; + } + + evsel->core.attr.disabled = 1; + + err = evsel__open_per_cpu(evsel, cpus, -1); + if (err) { + if (err == -EACCES) + return TEST_SKIP; + + pr_debug("Failed to open event cpu-clock:u\n"); + return err; + } + + perf_cpu_map__put(cpus); + return evsel__enable(evsel); +} + +static int attach__cpu_enabled(struct evlist *evlist) +{ + struct evsel *evsel = evlist__last(evlist); + struct perf_cpu_map *cpus; + int err; + + pr_debug("attaching to CPU 0 as enabled\n"); + + cpus = perf_cpu_map__new("0"); + if (cpus == NULL) { + pr_debug("failed to call perf_cpu_map__new\n"); + return -1; + } + + err = evsel__open_per_cpu(evsel, cpus, -1); + if (err == -EACCES) + return TEST_SKIP; + + perf_cpu_map__put(cpus); + return err ? TEST_FAIL : TEST_OK; +} + +static int test_times(int (attach)(struct evlist *), + int (detach)(struct evlist *)) +{ + struct perf_counts_values count; + struct evlist *evlist = NULL; + struct evsel *evsel; + int err = -1, i; + + evlist = evlist__new(); + if (!evlist) { + pr_debug("failed to create event list\n"); + goto out_err; + } + + err = parse_events(evlist, "cpu-clock:u", NULL); + if (err) { + pr_debug("failed to parse event cpu-clock:u\n"); + goto out_err; + } + + evsel = evlist__last(evlist); + evsel->core.attr.read_format |= + PERF_FORMAT_TOTAL_TIME_ENABLED | + PERF_FORMAT_TOTAL_TIME_RUNNING; + + err = attach(evlist); + if (err == TEST_SKIP) { + pr_debug(" SKIP : not enough rights\n"); + return err; + } + + TEST_ASSERT_VAL("failed to attach", !err); + + for (i = 0; i < 100000000; i++) { } + + TEST_ASSERT_VAL("failed to detach", !detach(evlist)); + + perf_evsel__read(&evsel->core, 0, 0, &count); + + err = !(count.ena == count.run); + + pr_debug(" %s: ena %" PRIu64", run %" PRIu64"\n", + !err ? "OK " : "FAILED", + count.ena, count.run); + +out_err: + evlist__delete(evlist); + return !err ? TEST_OK : TEST_FAIL; +} + +/* + * This test creates software event 'cpu-clock' + * attaches it in several ways (explained below) + * and checks that enabled and running times + * match. + */ +int test__event_times(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err, ret = 0; + +#define _T(attach, detach) \ + err = test_times(attach, detach); \ + if (err && (ret == TEST_OK || ret == TEST_SKIP)) \ + ret = err; + + /* attach on newly spawned process after exec */ + _T(attach__enable_on_exec, detach__enable_on_exec) + /* attach on current process as enabled */ + _T(attach__current_enabled, detach__disable) + /* attach on current process as disabled */ + _T(attach__current_disabled, detach__disable) + /* attach on cpu as disabled */ + _T(attach__cpu_disabled, detach__disable) + /* attach on cpu as enabled */ + _T(attach__cpu_enabled, detach__disable) + +#undef _T + return ret; +} diff --git a/tools/perf/tests/event_update.c b/tools/perf/tests/event_update.c new file mode 100644 index 000000000..1c9a6138f --- /dev/null +++ b/tools/perf/tests/event_update.c @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <perf/cpumap.h> +#include <string.h> +#include "cpumap.h" +#include "evlist.h" +#include "evsel.h" +#include "header.h" +#include "machine.h" +#include "util/synthetic-events.h" +#include "tool.h" +#include "tests.h" +#include "debug.h" + +static int process_event_unit(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_event_update *ev = (struct perf_record_event_update *)event; + + TEST_ASSERT_VAL("wrong id", ev->id == 123); + TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__UNIT); + TEST_ASSERT_VAL("wrong unit", !strcmp(ev->data, "KRAVA")); + return 0; +} + +static int process_event_scale(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_event_update *ev = (struct perf_record_event_update *)event; + struct perf_record_event_update_scale *ev_data; + + ev_data = (struct perf_record_event_update_scale *)ev->data; + + TEST_ASSERT_VAL("wrong id", ev->id == 123); + TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__SCALE); + TEST_ASSERT_VAL("wrong scale", ev_data->scale == 0.123); + return 0; +} + +struct event_name { + struct perf_tool tool; + const char *name; +}; + +static int process_event_name(struct perf_tool *tool, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct event_name *tmp = container_of(tool, struct event_name, tool); + struct perf_record_event_update *ev = (struct perf_record_event_update *)event; + + TEST_ASSERT_VAL("wrong id", ev->id == 123); + TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__NAME); + TEST_ASSERT_VAL("wrong name", !strcmp(ev->data, tmp->name)); + return 0; +} + +static int process_event_cpus(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_event_update *ev = (struct perf_record_event_update *)event; + struct perf_record_event_update_cpus *ev_data; + struct perf_cpu_map *map; + + ev_data = (struct perf_record_event_update_cpus *) ev->data; + + map = cpu_map__new_data(&ev_data->cpus); + + TEST_ASSERT_VAL("wrong id", ev->id == 123); + TEST_ASSERT_VAL("wrong type", ev->type == PERF_EVENT_UPDATE__CPUS); + TEST_ASSERT_VAL("wrong cpus", map->nr == 3); + TEST_ASSERT_VAL("wrong cpus", map->map[0] == 1); + TEST_ASSERT_VAL("wrong cpus", map->map[1] == 2); + TEST_ASSERT_VAL("wrong cpus", map->map[2] == 3); + perf_cpu_map__put(map); + return 0; +} + +int test__event_update(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct evlist *evlist; + struct evsel *evsel; + struct event_name tmp; + + evlist = perf_evlist__new_default(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("failed to allocate ids", + !perf_evsel__alloc_id(&evsel->core, 1, 1)); + + perf_evlist__id_add(&evlist->core, &evsel->core, 0, 0, 123); + + evsel->unit = strdup("KRAVA"); + + TEST_ASSERT_VAL("failed to synthesize attr update unit", + !perf_event__synthesize_event_update_unit(NULL, evsel, process_event_unit)); + + evsel->scale = 0.123; + + TEST_ASSERT_VAL("failed to synthesize attr update scale", + !perf_event__synthesize_event_update_scale(NULL, evsel, process_event_scale)); + + tmp.name = evsel__name(evsel); + + TEST_ASSERT_VAL("failed to synthesize attr update name", + !perf_event__synthesize_event_update_name(&tmp.tool, evsel, process_event_name)); + + evsel->core.own_cpus = perf_cpu_map__new("1,2,3"); + + TEST_ASSERT_VAL("failed to synthesize attr update cpus", + !perf_event__synthesize_event_update_cpus(&tmp.tool, evsel, process_event_cpus)); + + evlist__delete(evlist); + return 0; +} diff --git a/tools/perf/tests/evsel-roundtrip-name.c b/tools/perf/tests/evsel-roundtrip-name.c new file mode 100644 index 000000000..f7f3e5b4c --- /dev/null +++ b/tools/perf/tests/evsel-roundtrip-name.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "evlist.h" +#include "evsel.h" +#include "parse-events.h" +#include "tests.h" +#include "debug.h" +#include <errno.h> +#include <linux/kernel.h> + +static int perf_evsel__roundtrip_cache_name_test(void) +{ + char name[128]; + int type, op, err = 0, ret = 0, i, idx; + struct evsel *evsel; + struct evlist *evlist = evlist__new(); + + if (evlist == NULL) + return -ENOMEM; + + for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { + for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { + /* skip invalid cache type */ + if (!evsel__is_cache_op_valid(type, op)) + continue; + + for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { + __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); + err = parse_events(evlist, name, NULL); + if (err) + ret = err; + } + } + } + + idx = 0; + evsel = evlist__first(evlist); + + for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { + for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { + /* skip invalid cache type */ + if (!evsel__is_cache_op_valid(type, op)) + continue; + + for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { + __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); + if (evsel->idx != idx) + continue; + + ++idx; + + if (strcmp(evsel__name(evsel), name)) { + pr_debug("%s != %s\n", evsel__name(evsel), name); + ret = -1; + } + + evsel = evsel__next(evsel); + } + } + } + + evlist__delete(evlist); + return ret; +} + +static int __perf_evsel__name_array_test(const char *names[], int nr_names) +{ + int i, err; + struct evsel *evsel; + struct evlist *evlist = evlist__new(); + + if (evlist == NULL) + return -ENOMEM; + + for (i = 0; i < nr_names; ++i) { + err = parse_events(evlist, names[i], NULL); + if (err) { + pr_debug("failed to parse event '%s', err %d\n", + names[i], err); + goto out_delete_evlist; + } + } + + err = 0; + evlist__for_each_entry(evlist, evsel) { + if (strcmp(evsel__name(evsel), names[evsel->idx])) { + --err; + pr_debug("%s != %s\n", evsel__name(evsel), names[evsel->idx]); + } + } + +out_delete_evlist: + evlist__delete(evlist); + return err; +} + +#define perf_evsel__name_array_test(names) \ + __perf_evsel__name_array_test(names, ARRAY_SIZE(names)) + +int test__perf_evsel__roundtrip_name_test(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = 0, ret = 0; + + err = perf_evsel__name_array_test(evsel__hw_names); + if (err) + ret = err; + + err = __perf_evsel__name_array_test(evsel__sw_names, PERF_COUNT_SW_DUMMY + 1); + if (err) + ret = err; + + err = perf_evsel__roundtrip_cache_name_test(); + if (err) + ret = err; + + return ret; +} diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c new file mode 100644 index 000000000..0e224a0a5 --- /dev/null +++ b/tools/perf/tests/evsel-tp-sched.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/err.h> +#include <traceevent/event-parse.h> +#include "evsel.h" +#include "tests.h" +#include "debug.h" + +static int perf_evsel__test_field(struct evsel *evsel, const char *name, + int size, bool should_be_signed) +{ + struct tep_format_field *field = evsel__field(evsel, name); + int is_signed; + int ret = 0; + + if (field == NULL) { + pr_debug("%s: \"%s\" field not found!\n", evsel->name, name); + return -1; + } + + is_signed = !!(field->flags & TEP_FIELD_IS_SIGNED); + if (should_be_signed && !is_signed) { + pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n", + evsel->name, name, is_signed, should_be_signed); + ret = -1; + } + + if (field->size != size) { + pr_debug("%s: \"%s\" size (%d) should be %d!\n", + evsel->name, name, field->size, size); + ret = -1; + } + + return ret; +} + +int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct evsel *evsel = evsel__newtp("sched", "sched_switch"); + int ret = 0; + + if (IS_ERR(evsel)) { + pr_debug("evsel__newtp failed with %ld\n", PTR_ERR(evsel)); + return -1; + } + + if (perf_evsel__test_field(evsel, "prev_comm", 16, false)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prev_pid", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prev_prio", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prev_state", sizeof(long), true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "next_comm", 16, false)) + ret = -1; + + if (perf_evsel__test_field(evsel, "next_pid", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "next_prio", 4, true)) + ret = -1; + + evsel__delete(evsel); + + evsel = evsel__newtp("sched", "sched_wakeup"); + + if (IS_ERR(evsel)) { + pr_debug("evsel__newtp failed with %ld\n", PTR_ERR(evsel)); + return -1; + } + + if (perf_evsel__test_field(evsel, "comm", 16, false)) + ret = -1; + + if (perf_evsel__test_field(evsel, "pid", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prio", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "target_cpu", 4, true)) + ret = -1; + + evsel__delete(evsel); + return ret; +} diff --git a/tools/perf/tests/expand-cgroup.c b/tools/perf/tests/expand-cgroup.c new file mode 100644 index 000000000..4c59f3ae4 --- /dev/null +++ b/tools/perf/tests/expand-cgroup.c @@ -0,0 +1,241 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include "debug.h" +#include "evlist.h" +#include "cgroup.h" +#include "rblist.h" +#include "metricgroup.h" +#include "parse-events.h" +#include "pmu-events/pmu-events.h" +#include "pfm.h" +#include <subcmd/parse-options.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +static int test_expand_events(struct evlist *evlist, + struct rblist *metric_events) +{ + int i, ret = TEST_FAIL; + int nr_events; + bool was_group_event; + int nr_members; /* for the first evsel only */ + const char cgrp_str[] = "A,B,C"; + const char *cgrp_name[] = { "A", "B", "C" }; + int nr_cgrps = ARRAY_SIZE(cgrp_name); + char **ev_name; + struct evsel *evsel; + + TEST_ASSERT_VAL("evlist is empty", !perf_evlist__empty(evlist)); + + nr_events = evlist->core.nr_entries; + ev_name = calloc(nr_events, sizeof(*ev_name)); + if (ev_name == NULL) { + pr_debug("memory allocation failure\n"); + return TEST_FAIL; + } + i = 0; + evlist__for_each_entry(evlist, evsel) { + ev_name[i] = strdup(evsel->name); + if (ev_name[i] == NULL) { + pr_debug("memory allocation failure\n"); + goto out; + } + i++; + } + /* remember grouping info */ + was_group_event = evsel__is_group_event(evlist__first(evlist)); + nr_members = evlist__first(evlist)->core.nr_members; + + ret = evlist__expand_cgroup(evlist, cgrp_str, metric_events, false); + if (ret < 0) { + pr_debug("failed to expand events for cgroups\n"); + goto out; + } + + ret = TEST_FAIL; + if (evlist->core.nr_entries != nr_events * nr_cgrps) { + pr_debug("event count doesn't match\n"); + goto out; + } + + i = 0; + evlist__for_each_entry(evlist, evsel) { + if (strcmp(evsel->name, ev_name[i % nr_events])) { + pr_debug("event name doesn't match:\n"); + pr_debug(" evsel[%d]: %s\n expected: %s\n", + i, evsel->name, ev_name[i % nr_events]); + goto out; + } + if (strcmp(evsel->cgrp->name, cgrp_name[i / nr_events])) { + pr_debug("cgroup name doesn't match:\n"); + pr_debug(" evsel[%d]: %s\n expected: %s\n", + i, evsel->cgrp->name, cgrp_name[i / nr_events]); + goto out; + } + + if ((i % nr_events) == 0) { + if (evsel__is_group_event(evsel) != was_group_event) { + pr_debug("event group doesn't match: got %s, expect %s\n", + evsel__is_group_event(evsel) ? "true" : "false", + was_group_event ? "true" : "false"); + goto out; + } + if (evsel->core.nr_members != nr_members) { + pr_debug("event group member doesn't match: %d vs %d\n", + evsel->core.nr_members, nr_members); + goto out; + } + } + i++; + } + ret = TEST_OK; + +out: for (i = 0; i < nr_events; i++) + free(ev_name[i]); + free(ev_name); + return ret; +} + +static int expand_default_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + + evlist = perf_evlist__new_default(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); + evlist__delete(evlist); + return ret; +} + +static int expand_group_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + struct parse_events_error err; + const char event_str[] = "{cycles,instructions}"; + + symbol_conf.event_group = true; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + ret = parse_events(evlist, event_str, &err); + if (ret < 0) { + pr_debug("failed to parse event '%s', err %d, str '%s'\n", + event_str, ret, err.str); + parse_events_print_error(&err, event_str); + goto out; + } + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); +out: + evlist__delete(evlist); + return ret; +} + +static int expand_libpfm_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + const char event_str[] = "CYCLES"; + struct option opt = { + .value = &evlist, + }; + + symbol_conf.event_group = true; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + ret = parse_libpfm_events_option(&opt, event_str, 0); + if (ret < 0) { + pr_debug("failed to parse libpfm event '%s', err %d\n", + event_str, ret); + goto out; + } + if (perf_evlist__empty(evlist)) { + pr_debug("libpfm was not enabled\n"); + goto out; + } + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); +out: + evlist__delete(evlist); + return ret; +} + +static int expand_metric_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + const char metric_str[] = "CPI"; + + struct pmu_event pme_test[] = { + { + .metric_expr = "instructions / cycles", + .metric_name = "IPC", + }, + { + .metric_expr = "1 / IPC", + .metric_name = "CPI", + }, + { + .metric_expr = NULL, + .metric_name = NULL, + }, + }; + struct pmu_events_map ev_map = { + .cpuid = "test", + .version = "1", + .type = "core", + .table = pme_test, + }; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + rblist__init(&metric_events); + ret = metricgroup__parse_groups_test(evlist, &ev_map, metric_str, + false, false, &metric_events); + if (ret < 0) { + pr_debug("failed to parse '%s' metric\n", metric_str); + goto out; + } + + ret = test_expand_events(evlist, &metric_events); + +out: + metricgroup__rblist_exit(&metric_events); + evlist__delete(evlist); + return ret; +} + +int test__expand_cgroup_events(struct test *test __maybe_unused, + int subtest __maybe_unused) +{ + int ret; + + ret = expand_default_events(); + TEST_ASSERT_EQUAL("failed to expand default events", ret, 0); + + ret = expand_group_events(); + TEST_ASSERT_EQUAL("failed to expand event group", ret, 0); + + ret = expand_libpfm_events(); + TEST_ASSERT_EQUAL("failed to expand event group", ret, 0); + + ret = expand_metric_events(); + TEST_ASSERT_EQUAL("failed to expand metric events", ret, 0); + + return ret; +} diff --git a/tools/perf/tests/expr.c b/tools/perf/tests/expr.c new file mode 100644 index 000000000..4d0105195 --- /dev/null +++ b/tools/perf/tests/expr.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "util/debug.h" +#include "util/expr.h" +#include "tests.h" +#include <stdlib.h> +#include <string.h> +#include <linux/zalloc.h> + +static int test(struct expr_parse_ctx *ctx, const char *e, double val2) +{ + double val; + + if (expr__parse(&val, ctx, e, 1)) + TEST_ASSERT_VAL("parse test failed", 0); + TEST_ASSERT_VAL("unexpected value", val == val2); + return 0; +} + +int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused) +{ + struct expr_id_data *val_ptr; + const char *p; + double val; + int ret; + struct expr_parse_ctx ctx; + + expr__ctx_init(&ctx); + expr__add_id_val(&ctx, strdup("FOO"), 1); + expr__add_id_val(&ctx, strdup("BAR"), 2); + + ret = test(&ctx, "1+1", 2); + ret |= test(&ctx, "FOO+BAR", 3); + ret |= test(&ctx, "(BAR/2)%2", 1); + ret |= test(&ctx, "1 - -4", 5); + ret |= test(&ctx, "(FOO-1)*2 + (BAR/2)%2 - -4", 5); + ret |= test(&ctx, "1-1 | 1", 1); + ret |= test(&ctx, "1-1 & 1", 0); + ret |= test(&ctx, "min(1,2) + 1", 2); + ret |= test(&ctx, "max(1,2) + 1", 3); + ret |= test(&ctx, "1+1 if 3*4 else 0", 2); + ret |= test(&ctx, "1.1 + 2.1", 3.2); + ret |= test(&ctx, ".1 + 2.", 2.1); + ret |= test(&ctx, "d_ratio(1, 2)", 0.5); + ret |= test(&ctx, "d_ratio(2.5, 0)", 0); + ret |= test(&ctx, "1.1 < 2.2", 1); + ret |= test(&ctx, "2.2 > 1.1", 1); + ret |= test(&ctx, "1.1 < 1.1", 0); + ret |= test(&ctx, "2.2 > 2.2", 0); + ret |= test(&ctx, "2.2 < 1.1", 0); + ret |= test(&ctx, "1.1 > 2.2", 0); + + if (ret) + return ret; + + p = "FOO/0"; + ret = expr__parse(&val, &ctx, p, 1); + TEST_ASSERT_VAL("division by zero", ret == -1); + + p = "BAR/"; + ret = expr__parse(&val, &ctx, p, 1); + TEST_ASSERT_VAL("missing operand", ret == -1); + + expr__ctx_clear(&ctx); + TEST_ASSERT_VAL("find other", + expr__find_other("FOO + BAR + BAZ + BOZO", "FOO", + &ctx, 1) == 0); + TEST_ASSERT_VAL("find other", hashmap__size(&ctx.ids) == 3); + TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "BAR", + (void **)&val_ptr)); + TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "BAZ", + (void **)&val_ptr)); + TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "BOZO", + (void **)&val_ptr)); + + expr__ctx_clear(&ctx); + TEST_ASSERT_VAL("find other", + expr__find_other("EVENT1\\,param\\=?@ + EVENT2\\,param\\=?@", + NULL, &ctx, 3) == 0); + TEST_ASSERT_VAL("find other", hashmap__size(&ctx.ids) == 2); + TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "EVENT1,param=3/", + (void **)&val_ptr)); + TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "EVENT2,param=3/", + (void **)&val_ptr)); + + expr__ctx_clear(&ctx); + + return 0; +} diff --git a/tools/perf/tests/fdarray.c b/tools/perf/tests/fdarray.c new file mode 100644 index 000000000..d9eca8e86 --- /dev/null +++ b/tools/perf/tests/fdarray.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <api/fd/array.h> +#include <poll.h> +#include "util/debug.h" +#include "tests/tests.h" + +static void fdarray__init_revents(struct fdarray *fda, short revents) +{ + int fd; + + fda->nr = fda->nr_alloc; + + for (fd = 0; fd < fda->nr; ++fd) { + fda->entries[fd].fd = fda->nr - fd; + fda->entries[fd].events = revents; + fda->entries[fd].revents = revents; + } +} + +static int fdarray__fprintf_prefix(struct fdarray *fda, const char *prefix, FILE *fp) +{ + int printed = 0; + + if (verbose <= 0) + return 0; + + printed += fprintf(fp, "\n%s: ", prefix); + return printed + fdarray__fprintf(fda, fp); +} + +int test__fdarray__filter(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int nr_fds, err = TEST_FAIL; + struct fdarray *fda = fdarray__new(5, 5); + + if (fda == NULL) { + pr_debug("\nfdarray__new() failed!"); + goto out; + } + + fdarray__init_revents(fda, POLLIN); + nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); + if (nr_fds != fda->nr_alloc) { + pr_debug("\nfdarray__filter()=%d != %d shouldn't have filtered anything", + nr_fds, fda->nr_alloc); + goto out_delete; + } + + fdarray__init_revents(fda, POLLHUP); + nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); + if (nr_fds != 0) { + pr_debug("\nfdarray__filter()=%d != %d, should have filtered all fds", + nr_fds, fda->nr_alloc); + goto out_delete; + } + + fdarray__init_revents(fda, POLLHUP); + fda->entries[2].revents = POLLIN; + + pr_debug("\nfiltering all but fda->entries[2]:"); + fdarray__fprintf_prefix(fda, "before", stderr); + nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); + fdarray__fprintf_prefix(fda, " after", stderr); + if (nr_fds != 1) { + pr_debug("\nfdarray__filter()=%d != 1, should have left just one event", nr_fds); + goto out_delete; + } + + fdarray__init_revents(fda, POLLHUP); + fda->entries[0].revents = POLLIN; + fda->entries[3].revents = POLLIN; + + pr_debug("\nfiltering all but (fda->entries[0], fda->entries[3]):"); + fdarray__fprintf_prefix(fda, "before", stderr); + nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); + fdarray__fprintf_prefix(fda, " after", stderr); + if (nr_fds != 2) { + pr_debug("\nfdarray__filter()=%d != 2, should have left just two events", + nr_fds); + goto out_delete; + } + + pr_debug("\n"); + + err = 0; +out_delete: + fdarray__delete(fda); +out: + return err; +} + +int test__fdarray__add(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = TEST_FAIL; + struct fdarray *fda = fdarray__new(2, 2); + + if (fda == NULL) { + pr_debug("\nfdarray__new() failed!"); + goto out; + } + +#define FDA_CHECK(_idx, _fd, _revents) \ + if (fda->entries[_idx].fd != _fd) { \ + pr_debug("\n%d: fda->entries[%d](%d) != %d!", \ + __LINE__, _idx, fda->entries[1].fd, _fd); \ + goto out_delete; \ + } \ + if (fda->entries[_idx].events != (_revents)) { \ + pr_debug("\n%d: fda->entries[%d].revents(%d) != %d!", \ + __LINE__, _idx, fda->entries[_idx].fd, _revents); \ + goto out_delete; \ + } + +#define FDA_ADD(_idx, _fd, _revents, _nr) \ + if (fdarray__add(fda, _fd, _revents, fdarray_flag__default) < 0) { \ + pr_debug("\n%d: fdarray__add(fda, %d, %d) failed!", \ + __LINE__,_fd, _revents); \ + goto out_delete; \ + } \ + if (fda->nr != _nr) { \ + pr_debug("\n%d: fdarray__add(fda, %d, %d)=%d != %d", \ + __LINE__,_fd, _revents, fda->nr, _nr); \ + goto out_delete; \ + } \ + FDA_CHECK(_idx, _fd, _revents) + + FDA_ADD(0, 1, POLLIN, 1); + FDA_ADD(1, 2, POLLERR, 2); + + fdarray__fprintf_prefix(fda, "before growing array", stderr); + + FDA_ADD(2, 35, POLLHUP, 3); + + if (fda->entries == NULL) { + pr_debug("\nfdarray__add(fda, 35, POLLHUP) should have allocated fda->pollfd!"); + goto out_delete; + } + + fdarray__fprintf_prefix(fda, "after 3rd add", stderr); + + FDA_ADD(3, 88, POLLIN | POLLOUT, 4); + + fdarray__fprintf_prefix(fda, "after 4th add", stderr); + + FDA_CHECK(0, 1, POLLIN); + FDA_CHECK(1, 2, POLLERR); + FDA_CHECK(2, 35, POLLHUP); + FDA_CHECK(3, 88, POLLIN | POLLOUT); + +#undef FDA_ADD +#undef FDA_CHECK + + pr_debug("\n"); + + err = 0; +out_delete: + fdarray__delete(fda); +out: + return err; +} diff --git a/tools/perf/tests/genelf.c b/tools/perf/tests/genelf.c new file mode 100644 index 000000000..f797f9823 --- /dev/null +++ b/tools/perf/tests/genelf.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <linux/compiler.h> + +#include "debug.h" +#include "tests.h" + +#ifdef HAVE_JITDUMP +#include <libelf.h> +#include "../util/genelf.h" +#endif + +#define TEMPL "/tmp/perf-test-XXXXXX" + +int test__jit_write_elf(struct test *test __maybe_unused, + int subtest __maybe_unused) +{ +#ifdef HAVE_JITDUMP + static unsigned char x86_code[] = { + 0xBB, 0x2A, 0x00, 0x00, 0x00, /* movl $42, %ebx */ + 0xB8, 0x01, 0x00, 0x00, 0x00, /* movl $1, %eax */ + 0xCD, 0x80 /* int $0x80 */ + }; + char path[PATH_MAX]; + int fd, ret; + + strcpy(path, TEMPL); + + fd = mkstemp(path); + if (fd < 0) { + perror("mkstemp failed"); + return TEST_FAIL; + } + + pr_info("Writing jit code to: %s\n", path); + + ret = jit_write_elf(fd, 0, "main", x86_code, sizeof(x86_code), + NULL, 0, NULL, 0, 0); + close(fd); + + unlink(path); + + return ret ? TEST_FAIL : 0; +#else + return TEST_SKIP; +#endif +} diff --git a/tools/perf/tests/hists_common.c b/tools/perf/tests/hists_common.c new file mode 100644 index 000000000..6f34d08b8 --- /dev/null +++ b/tools/perf/tests/hists_common.c @@ -0,0 +1,219 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <inttypes.h> +#include "util/debug.h" +#include "util/dso.h" +#include "util/event.h" // struct perf_sample +#include "util/map.h" +#include "util/symbol.h" +#include "util/sort.h" +#include "util/evsel.h" +#include "util/machine.h" +#include "util/thread.h" +#include "tests/hists_common.h" +#include <linux/kernel.h> +#include <linux/perf_event.h> + +static struct { + u32 pid; + const char *comm; +} fake_threads[] = { + { FAKE_PID_PERF1, "perf" }, + { FAKE_PID_PERF2, "perf" }, + { FAKE_PID_BASH, "bash" }, +}; + +static struct { + u32 pid; + u64 start; + const char *filename; +} fake_mmap_info[] = { + { FAKE_PID_PERF1, FAKE_MAP_PERF, "perf" }, + { FAKE_PID_PERF1, FAKE_MAP_LIBC, "libc" }, + { FAKE_PID_PERF1, FAKE_MAP_KERNEL, "[kernel]" }, + { FAKE_PID_PERF2, FAKE_MAP_PERF, "perf" }, + { FAKE_PID_PERF2, FAKE_MAP_LIBC, "libc" }, + { FAKE_PID_PERF2, FAKE_MAP_KERNEL, "[kernel]" }, + { FAKE_PID_BASH, FAKE_MAP_BASH, "bash" }, + { FAKE_PID_BASH, FAKE_MAP_LIBC, "libc" }, + { FAKE_PID_BASH, FAKE_MAP_KERNEL, "[kernel]" }, +}; + +struct fake_sym { + u64 start; + u64 length; + const char *name; +}; + +static struct fake_sym perf_syms[] = { + { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" }, + { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "run_command" }, + { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "cmd_record" }, +}; + +static struct fake_sym bash_syms[] = { + { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" }, + { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "xmalloc" }, + { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "xfree" }, +}; + +static struct fake_sym libc_syms[] = { + { 700, 100, "malloc" }, + { 800, 100, "free" }, + { 900, 100, "realloc" }, + { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "malloc" }, + { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "free" }, + { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "realloc" }, +}; + +static struct fake_sym kernel_syms[] = { + { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "schedule" }, + { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "page_fault" }, + { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "sys_perf_event_open" }, +}; + +static struct { + const char *dso_name; + struct fake_sym *syms; + size_t nr_syms; +} fake_symbols[] = { + { "perf", perf_syms, ARRAY_SIZE(perf_syms) }, + { "bash", bash_syms, ARRAY_SIZE(bash_syms) }, + { "libc", libc_syms, ARRAY_SIZE(libc_syms) }, + { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) }, +}; + +struct machine *setup_fake_machine(struct machines *machines) +{ + struct machine *machine = machines__find(machines, HOST_KERNEL_ID); + size_t i; + + if (machine == NULL) { + pr_debug("Not enough memory for machine setup\n"); + return NULL; + } + + for (i = 0; i < ARRAY_SIZE(fake_threads); i++) { + struct thread *thread; + + thread = machine__findnew_thread(machine, fake_threads[i].pid, + fake_threads[i].pid); + if (thread == NULL) + goto out; + + thread__set_comm(thread, fake_threads[i].comm, 0); + thread__put(thread); + } + + for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) { + struct perf_sample sample = { + .cpumode = PERF_RECORD_MISC_USER, + }; + union perf_event fake_mmap_event = { + .mmap = { + .pid = fake_mmap_info[i].pid, + .tid = fake_mmap_info[i].pid, + .start = fake_mmap_info[i].start, + .len = FAKE_MAP_LENGTH, + .pgoff = 0ULL, + }, + }; + + strcpy(fake_mmap_event.mmap.filename, + fake_mmap_info[i].filename); + + machine__process_mmap_event(machine, &fake_mmap_event, &sample); + } + + for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) { + size_t k; + struct dso *dso; + + dso = machine__findnew_dso(machine, fake_symbols[i].dso_name); + if (dso == NULL) + goto out; + + /* emulate dso__load() */ + dso__set_loaded(dso); + + for (k = 0; k < fake_symbols[i].nr_syms; k++) { + struct symbol *sym; + struct fake_sym *fsym = &fake_symbols[i].syms[k]; + + sym = symbol__new(fsym->start, fsym->length, + STB_GLOBAL, STT_FUNC, fsym->name); + if (sym == NULL) { + dso__put(dso); + goto out; + } + + symbols__insert(&dso->symbols, sym); + } + + dso__put(dso); + } + + return machine; + +out: + pr_debug("Not enough memory for machine setup\n"); + machine__delete_threads(machine); + return NULL; +} + +void print_hists_in(struct hists *hists) +{ + int i = 0; + struct rb_root_cached *root; + struct rb_node *node; + + if (hists__has(hists, need_collapse)) + root = &hists->entries_collapsed; + else + root = hists->entries_in; + + pr_info("----- %s --------\n", __func__); + node = rb_first_cached(root); + while (node) { + struct hist_entry *he; + + he = rb_entry(node, struct hist_entry, rb_node_in); + + if (!he->filtered) { + pr_info("%2d: entry: %-8s [%-8s] %20s: period = %"PRIu64"\n", + i, thread__comm_str(he->thread), + he->ms.map->dso->short_name, + he->ms.sym->name, he->stat.period); + } + + i++; + node = rb_next(node); + } +} + +void print_hists_out(struct hists *hists) +{ + int i = 0; + struct rb_root_cached *root; + struct rb_node *node; + + root = &hists->entries; + + pr_info("----- %s --------\n", __func__); + node = rb_first_cached(root); + while (node) { + struct hist_entry *he; + + he = rb_entry(node, struct hist_entry, rb_node); + + if (!he->filtered) { + pr_info("%2d: entry: %8s:%5d [%-8s] %20s: period = %"PRIu64"/%"PRIu64"\n", + i, thread__comm_str(he->thread), he->thread->tid, + he->ms.map->dso->short_name, + he->ms.sym->name, he->stat.period, + he->stat_acc ? he->stat_acc->period : 0); + } + + i++; + node = rb_next(node); + } +} diff --git a/tools/perf/tests/hists_common.h b/tools/perf/tests/hists_common.h new file mode 100644 index 000000000..a2de0ff0c --- /dev/null +++ b/tools/perf/tests/hists_common.h @@ -0,0 +1,76 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_TESTS__HISTS_COMMON_H__ +#define __PERF_TESTS__HISTS_COMMON_H__ + +struct machine; +struct machines; + +#define FAKE_PID_PERF1 100 +#define FAKE_PID_PERF2 200 +#define FAKE_PID_BASH 300 + +#define FAKE_MAP_PERF 0x400000 +#define FAKE_MAP_BASH 0x400000 +#define FAKE_MAP_LIBC 0x500000 +#define FAKE_MAP_KERNEL 0xf00000 +#define FAKE_MAP_LENGTH 0x100000 + +#define FAKE_SYM_OFFSET1 700 +#define FAKE_SYM_OFFSET2 800 +#define FAKE_SYM_OFFSET3 900 +#define FAKE_SYM_LENGTH 100 + +#define FAKE_IP_PERF_MAIN FAKE_MAP_PERF + FAKE_SYM_OFFSET1 +#define FAKE_IP_PERF_RUN_COMMAND FAKE_MAP_PERF + FAKE_SYM_OFFSET2 +#define FAKE_IP_PERF_CMD_RECORD FAKE_MAP_PERF + FAKE_SYM_OFFSET3 +#define FAKE_IP_BASH_MAIN FAKE_MAP_BASH + FAKE_SYM_OFFSET1 +#define FAKE_IP_BASH_XMALLOC FAKE_MAP_BASH + FAKE_SYM_OFFSET2 +#define FAKE_IP_BASH_XFREE FAKE_MAP_BASH + FAKE_SYM_OFFSET3 +#define FAKE_IP_LIBC_MALLOC FAKE_MAP_LIBC + FAKE_SYM_OFFSET1 +#define FAKE_IP_LIBC_FREE FAKE_MAP_LIBC + FAKE_SYM_OFFSET2 +#define FAKE_IP_LIBC_REALLOC FAKE_MAP_LIBC + FAKE_SYM_OFFSET3 +#define FAKE_IP_KERNEL_SCHEDULE FAKE_MAP_KERNEL + FAKE_SYM_OFFSET1 +#define FAKE_IP_KERNEL_PAGE_FAULT FAKE_MAP_KERNEL + FAKE_SYM_OFFSET2 +#define FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN FAKE_MAP_KERNEL + FAKE_SYM_OFFSET3 + +/* + * The setup_fake_machine() provides a test environment which consists + * of 3 processes that have 3 mappings and in turn, have 3 symbols + * respectively. See below table: + * + * Command: Pid Shared Object Symbol + * ............. ............. ................... + * perf: 100 perf main + * perf: 100 perf run_command + * perf: 100 perf cmd_record + * perf: 100 libc malloc + * perf: 100 libc free + * perf: 100 libc realloc + * perf: 100 [kernel] schedule + * perf: 100 [kernel] page_fault + * perf: 100 [kernel] sys_perf_event_open + * perf: 200 perf main + * perf: 200 perf run_command + * perf: 200 perf cmd_record + * perf: 200 libc malloc + * perf: 200 libc free + * perf: 200 libc realloc + * perf: 200 [kernel] schedule + * perf: 200 [kernel] page_fault + * perf: 200 [kernel] sys_perf_event_open + * bash: 300 bash main + * bash: 300 bash xmalloc + * bash: 300 bash xfree + * bash: 300 libc malloc + * bash: 300 libc free + * bash: 300 libc realloc + * bash: 300 [kernel] schedule + * bash: 300 [kernel] page_fault + * bash: 300 [kernel] sys_perf_event_open + */ +struct machine *setup_fake_machine(struct machines *machines); + +void print_hists_in(struct hists *hists); +void print_hists_out(struct hists *hists); + +#endif /* __PERF_TESTS__HISTS_COMMON_H__ */ diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c new file mode 100644 index 000000000..3f2e1a581 --- /dev/null +++ b/tools/perf/tests/hists_cumulate.c @@ -0,0 +1,738 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "util/debug.h" +#include "util/dso.h" +#include "util/event.h" +#include "util/map.h" +#include "util/symbol.h" +#include "util/sort.h" +#include "util/evsel.h" +#include "util/evlist.h" +#include "util/machine.h" +#include "util/thread.h" +#include "util/parse-events.h" +#include "tests/tests.h" +#include "tests/hists_common.h" +#include <linux/kernel.h> + +struct sample { + u32 pid; + u64 ip; + struct thread *thread; + struct map *map; + struct symbol *sym; +}; + +/* For the numbers, see hists_common.c */ +static struct sample fake_samples[] = { + /* perf [kernel] schedule() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, }, + /* perf [perf] main() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, }, + /* perf [perf] cmd_record() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, }, + /* perf [libc] malloc() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, }, + /* perf [libc] free() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, }, + /* perf [perf] main() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, }, + /* perf [kernel] page_fault() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, + /* bash [bash] main() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_MAIN, }, + /* bash [bash] xmalloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, }, + /* bash [kernel] page_fault() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, +}; + +/* + * Will be casted to struct ip_callchain which has all 64 bit entries + * of nr and ips[]. + */ +static u64 fake_callchains[][10] = { + /* schedule => run_command => main */ + { 3, FAKE_IP_KERNEL_SCHEDULE, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, }, + /* main */ + { 1, FAKE_IP_PERF_MAIN, }, + /* cmd_record => run_command => main */ + { 3, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, }, + /* malloc => cmd_record => run_command => main */ + { 4, FAKE_IP_LIBC_MALLOC, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, + FAKE_IP_PERF_MAIN, }, + /* free => cmd_record => run_command => main */ + { 4, FAKE_IP_LIBC_FREE, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, + FAKE_IP_PERF_MAIN, }, + /* main */ + { 1, FAKE_IP_PERF_MAIN, }, + /* page_fault => sys_perf_event_open => run_command => main */ + { 4, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN, + FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, }, + /* main */ + { 1, FAKE_IP_BASH_MAIN, }, + /* xmalloc => malloc => xmalloc => malloc => xmalloc => main */ + { 6, FAKE_IP_BASH_XMALLOC, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC, + FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC, FAKE_IP_BASH_MAIN, }, + /* page_fault => malloc => main */ + { 3, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_MAIN, }, +}; + +static int add_hist_entries(struct hists *hists, struct machine *machine) +{ + struct addr_location al; + struct evsel *evsel = hists_to_evsel(hists); + struct perf_sample sample = { .period = 1000, }; + size_t i; + + for (i = 0; i < ARRAY_SIZE(fake_samples); i++) { + struct hist_entry_iter iter = { + .evsel = evsel, + .sample = &sample, + .hide_unresolved = false, + }; + + if (symbol_conf.cumulate_callchain) + iter.ops = &hist_iter_cumulative; + else + iter.ops = &hist_iter_normal; + + sample.cpumode = PERF_RECORD_MISC_USER; + sample.pid = fake_samples[i].pid; + sample.tid = fake_samples[i].pid; + sample.ip = fake_samples[i].ip; + sample.callchain = (struct ip_callchain *)fake_callchains[i]; + + if (machine__resolve(machine, &al, &sample) < 0) + goto out; + + if (hist_entry_iter__add(&iter, &al, sysctl_perf_event_max_stack, + NULL) < 0) { + addr_location__put(&al); + goto out; + } + + fake_samples[i].thread = al.thread; + fake_samples[i].map = al.map; + fake_samples[i].sym = al.sym; + } + + return TEST_OK; + +out: + pr_debug("Not enough memory for adding a hist entry\n"); + return TEST_FAIL; +} + +static void del_hist_entries(struct hists *hists) +{ + struct hist_entry *he; + struct rb_root_cached *root_in; + struct rb_root_cached *root_out; + struct rb_node *node; + + if (hists__has(hists, need_collapse)) + root_in = &hists->entries_collapsed; + else + root_in = hists->entries_in; + + root_out = &hists->entries; + + while (!RB_EMPTY_ROOT(&root_out->rb_root)) { + node = rb_first_cached(root_out); + + he = rb_entry(node, struct hist_entry, rb_node); + rb_erase_cached(node, root_out); + rb_erase_cached(&he->rb_node_in, root_in); + hist_entry__delete(he); + } +} + +typedef int (*test_fn_t)(struct evsel *, struct machine *); + +#define COMM(he) (thread__comm_str(he->thread)) +#define DSO(he) (he->ms.map->dso->short_name) +#define SYM(he) (he->ms.sym->name) +#define CPU(he) (he->cpu) +#define PID(he) (he->thread->tid) +#define DEPTH(he) (he->callchain->max_depth) +#define CDSO(cl) (cl->ms.map->dso->short_name) +#define CSYM(cl) (cl->ms.sym->name) + +struct result { + u64 children; + u64 self; + const char *comm; + const char *dso; + const char *sym; +}; + +struct callchain_result { + u64 nr; + struct { + const char *dso; + const char *sym; + } node[10]; +}; + +static int do_test(struct hists *hists, struct result *expected, size_t nr_expected, + struct callchain_result *expected_callchain, size_t nr_callchain) +{ + char buf[32]; + size_t i, c; + struct hist_entry *he; + struct rb_root *root; + struct rb_node *node; + struct callchain_node *cnode; + struct callchain_list *clist; + + /* + * adding and deleting hist entries must be done outside of this + * function since TEST_ASSERT_VAL() returns in case of failure. + */ + hists__collapse_resort(hists, NULL); + evsel__output_resort(hists_to_evsel(hists), NULL); + + if (verbose > 2) { + pr_info("use callchain: %d, cumulate callchain: %d\n", + symbol_conf.use_callchain, + symbol_conf.cumulate_callchain); + print_hists_out(hists); + } + + root = &hists->entries.rb_root; + for (node = rb_first(root), i = 0; + node && (he = rb_entry(node, struct hist_entry, rb_node)); + node = rb_next(node), i++) { + scnprintf(buf, sizeof(buf), "Invalid hist entry #%zd", i); + + TEST_ASSERT_VAL("Incorrect number of hist entry", + i < nr_expected); + TEST_ASSERT_VAL(buf, he->stat.period == expected[i].self && + !strcmp(COMM(he), expected[i].comm) && + !strcmp(DSO(he), expected[i].dso) && + !strcmp(SYM(he), expected[i].sym)); + + if (symbol_conf.cumulate_callchain) + TEST_ASSERT_VAL(buf, he->stat_acc->period == expected[i].children); + + if (!symbol_conf.use_callchain) + continue; + + /* check callchain entries */ + root = &he->callchain->node.rb_root; + + TEST_ASSERT_VAL("callchains expected", !RB_EMPTY_ROOT(root)); + cnode = rb_entry(rb_first(root), struct callchain_node, rb_node); + + c = 0; + list_for_each_entry(clist, &cnode->val, list) { + scnprintf(buf, sizeof(buf), "Invalid callchain entry #%zd/%zd", i, c); + + TEST_ASSERT_VAL("Incorrect number of callchain entry", + c < expected_callchain[i].nr); + TEST_ASSERT_VAL(buf, + !strcmp(CDSO(clist), expected_callchain[i].node[c].dso) && + !strcmp(CSYM(clist), expected_callchain[i].node[c].sym)); + c++; + } + /* TODO: handle multiple child nodes properly */ + TEST_ASSERT_VAL("Incorrect number of callchain entry", + c <= expected_callchain[i].nr); + } + TEST_ASSERT_VAL("Incorrect number of hist entry", + i == nr_expected); + TEST_ASSERT_VAL("Incorrect number of callchain entry", + !symbol_conf.use_callchain || nr_expected == nr_callchain); + return 0; +} + +/* NO callchain + NO children */ +static int test1(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + /* + * expected output: + * + * Overhead Command Shared Object Symbol + * ======== ======= ============= ============== + * 20.00% perf perf [.] main + * 10.00% bash [kernel] [k] page_fault + * 10.00% bash bash [.] main + * 10.00% bash bash [.] xmalloc + * 10.00% perf [kernel] [k] page_fault + * 10.00% perf [kernel] [k] schedule + * 10.00% perf libc [.] free + * 10.00% perf libc [.] malloc + * 10.00% perf perf [.] cmd_record + */ + struct result expected[] = { + { 0, 2000, "perf", "perf", "main" }, + { 0, 1000, "bash", "[kernel]", "page_fault" }, + { 0, 1000, "bash", "bash", "main" }, + { 0, 1000, "bash", "bash", "xmalloc" }, + { 0, 1000, "perf", "[kernel]", "page_fault" }, + { 0, 1000, "perf", "[kernel]", "schedule" }, + { 0, 1000, "perf", "libc", "free" }, + { 0, 1000, "perf", "libc", "malloc" }, + { 0, 1000, "perf", "perf", "cmd_record" }, + }; + + symbol_conf.use_callchain = false; + symbol_conf.cumulate_callchain = false; + evsel__reset_sample_bit(evsel, CALLCHAIN); + + setup_sorting(NULL); + callchain_register_param(&callchain_param); + + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* callcain + NO children */ +static int test2(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + /* + * expected output: + * + * Overhead Command Shared Object Symbol + * ======== ======= ============= ============== + * 20.00% perf perf [.] main + * | + * --- main + * + * 10.00% bash [kernel] [k] page_fault + * | + * --- page_fault + * malloc + * main + * + * 10.00% bash bash [.] main + * | + * --- main + * + * 10.00% bash bash [.] xmalloc + * | + * --- xmalloc + * malloc + * xmalloc <--- NOTE: there's a cycle + * malloc + * xmalloc + * main + * + * 10.00% perf [kernel] [k] page_fault + * | + * --- page_fault + * sys_perf_event_open + * run_command + * main + * + * 10.00% perf [kernel] [k] schedule + * | + * --- schedule + * run_command + * main + * + * 10.00% perf libc [.] free + * | + * --- free + * cmd_record + * run_command + * main + * + * 10.00% perf libc [.] malloc + * | + * --- malloc + * cmd_record + * run_command + * main + * + * 10.00% perf perf [.] cmd_record + * | + * --- cmd_record + * run_command + * main + * + */ + struct result expected[] = { + { 0, 2000, "perf", "perf", "main" }, + { 0, 1000, "bash", "[kernel]", "page_fault" }, + { 0, 1000, "bash", "bash", "main" }, + { 0, 1000, "bash", "bash", "xmalloc" }, + { 0, 1000, "perf", "[kernel]", "page_fault" }, + { 0, 1000, "perf", "[kernel]", "schedule" }, + { 0, 1000, "perf", "libc", "free" }, + { 0, 1000, "perf", "libc", "malloc" }, + { 0, 1000, "perf", "perf", "cmd_record" }, + }; + struct callchain_result expected_callchain[] = { + { + 1, { { "perf", "main" }, }, + }, + { + 3, { { "[kernel]", "page_fault" }, + { "libc", "malloc" }, + { "bash", "main" }, }, + }, + { + 1, { { "bash", "main" }, }, + }, + { + 6, { { "bash", "xmalloc" }, + { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "bash", "main" }, }, + }, + { + 4, { { "[kernel]", "page_fault" }, + { "[kernel]", "sys_perf_event_open" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 3, { { "[kernel]", "schedule" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 4, { { "libc", "free" }, + { "perf", "cmd_record" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 4, { { "libc", "malloc" }, + { "perf", "cmd_record" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 3, { { "perf", "cmd_record" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + }; + + symbol_conf.use_callchain = true; + symbol_conf.cumulate_callchain = false; + evsel__set_sample_bit(evsel, CALLCHAIN); + + setup_sorting(NULL); + callchain_register_param(&callchain_param); + + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + err = do_test(hists, expected, ARRAY_SIZE(expected), + expected_callchain, ARRAY_SIZE(expected_callchain)); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* NO callchain + children */ +static int test3(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + /* + * expected output: + * + * Children Self Command Shared Object Symbol + * ======== ======== ======= ============= ======================= + * 70.00% 20.00% perf perf [.] main + * 50.00% 0.00% perf perf [.] run_command + * 30.00% 10.00% bash bash [.] main + * 30.00% 10.00% perf perf [.] cmd_record + * 20.00% 0.00% bash libc [.] malloc + * 10.00% 10.00% bash [kernel] [k] page_fault + * 10.00% 10.00% bash bash [.] xmalloc + * 10.00% 10.00% perf [kernel] [k] page_fault + * 10.00% 10.00% perf libc [.] malloc + * 10.00% 10.00% perf [kernel] [k] schedule + * 10.00% 10.00% perf libc [.] free + * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open + */ + struct result expected[] = { + { 7000, 2000, "perf", "perf", "main" }, + { 5000, 0, "perf", "perf", "run_command" }, + { 3000, 1000, "bash", "bash", "main" }, + { 3000, 1000, "perf", "perf", "cmd_record" }, + { 2000, 0, "bash", "libc", "malloc" }, + { 1000, 1000, "bash", "[kernel]", "page_fault" }, + { 1000, 1000, "bash", "bash", "xmalloc" }, + { 1000, 1000, "perf", "[kernel]", "page_fault" }, + { 1000, 1000, "perf", "[kernel]", "schedule" }, + { 1000, 1000, "perf", "libc", "free" }, + { 1000, 1000, "perf", "libc", "malloc" }, + { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" }, + }; + + symbol_conf.use_callchain = false; + symbol_conf.cumulate_callchain = true; + evsel__reset_sample_bit(evsel, CALLCHAIN); + + setup_sorting(NULL); + callchain_register_param(&callchain_param); + + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* callchain + children */ +static int test4(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + /* + * expected output: + * + * Children Self Command Shared Object Symbol + * ======== ======== ======= ============= ======================= + * 70.00% 20.00% perf perf [.] main + * | + * --- main + * + * 50.00% 0.00% perf perf [.] run_command + * | + * --- run_command + * main + * + * 30.00% 10.00% bash bash [.] main + * | + * --- main + * + * 30.00% 10.00% perf perf [.] cmd_record + * | + * --- cmd_record + * run_command + * main + * + * 20.00% 0.00% bash libc [.] malloc + * | + * --- malloc + * | + * |--50.00%-- xmalloc + * | main + * --50.00%-- main + * + * 10.00% 10.00% bash [kernel] [k] page_fault + * | + * --- page_fault + * malloc + * main + * + * 10.00% 10.00% bash bash [.] xmalloc + * | + * --- xmalloc + * malloc + * xmalloc <--- NOTE: there's a cycle + * malloc + * xmalloc + * main + * + * 10.00% 0.00% perf [kernel] [k] sys_perf_event_open + * | + * --- sys_perf_event_open + * run_command + * main + * + * 10.00% 10.00% perf [kernel] [k] page_fault + * | + * --- page_fault + * sys_perf_event_open + * run_command + * main + * + * 10.00% 10.00% perf [kernel] [k] schedule + * | + * --- schedule + * run_command + * main + * + * 10.00% 10.00% perf libc [.] free + * | + * --- free + * cmd_record + * run_command + * main + * + * 10.00% 10.00% perf libc [.] malloc + * | + * --- malloc + * cmd_record + * run_command + * main + * + */ + struct result expected[] = { + { 7000, 2000, "perf", "perf", "main" }, + { 5000, 0, "perf", "perf", "run_command" }, + { 3000, 1000, "bash", "bash", "main" }, + { 3000, 1000, "perf", "perf", "cmd_record" }, + { 2000, 0, "bash", "libc", "malloc" }, + { 1000, 1000, "bash", "[kernel]", "page_fault" }, + { 1000, 1000, "bash", "bash", "xmalloc" }, + { 1000, 0, "perf", "[kernel]", "sys_perf_event_open" }, + { 1000, 1000, "perf", "[kernel]", "page_fault" }, + { 1000, 1000, "perf", "[kernel]", "schedule" }, + { 1000, 1000, "perf", "libc", "free" }, + { 1000, 1000, "perf", "libc", "malloc" }, + }; + struct callchain_result expected_callchain[] = { + { + 1, { { "perf", "main" }, }, + }, + { + 2, { { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 1, { { "bash", "main" }, }, + }, + { + 3, { { "perf", "cmd_record" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 4, { { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "bash", "main" }, + { "bash", "main" }, }, + }, + { + 3, { { "[kernel]", "page_fault" }, + { "libc", "malloc" }, + { "bash", "main" }, }, + }, + { + 6, { { "bash", "xmalloc" }, + { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "libc", "malloc" }, + { "bash", "xmalloc" }, + { "bash", "main" }, }, + }, + { + 3, { { "[kernel]", "sys_perf_event_open" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 4, { { "[kernel]", "page_fault" }, + { "[kernel]", "sys_perf_event_open" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 3, { { "[kernel]", "schedule" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 4, { { "libc", "free" }, + { "perf", "cmd_record" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + { + 4, { { "libc", "malloc" }, + { "perf", "cmd_record" }, + { "perf", "run_command" }, + { "perf", "main" }, }, + }, + }; + + symbol_conf.use_callchain = true; + symbol_conf.cumulate_callchain = true; + evsel__set_sample_bit(evsel, CALLCHAIN); + + setup_sorting(NULL); + + callchain_param = callchain_param_default; + callchain_register_param(&callchain_param); + + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + err = do_test(hists, expected, ARRAY_SIZE(expected), + expected_callchain, ARRAY_SIZE(expected_callchain)); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +int test__hists_cumulate(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = TEST_FAIL; + struct machines machines; + struct machine *machine; + struct evsel *evsel; + struct evlist *evlist = evlist__new(); + size_t i; + test_fn_t testcases[] = { + test1, + test2, + test3, + test4, + }; + + TEST_ASSERT_VAL("No memory", evlist); + + err = parse_events(evlist, "cpu-clock", NULL); + if (err) + goto out; + err = TEST_FAIL; + + machines__init(&machines); + + /* setup threads/dso/map/symbols also */ + machine = setup_fake_machine(&machines); + if (!machine) + goto out; + + if (verbose > 1) + machine__fprintf(machine, stderr); + + evsel = evlist__first(evlist); + + for (i = 0; i < ARRAY_SIZE(testcases); i++) { + err = testcases[i](evsel, machine); + if (err < 0) + break; + } + +out: + /* tear down everything */ + evlist__delete(evlist); + machines__exit(&machines); + + return err; +} diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c new file mode 100644 index 000000000..123e07d35 --- /dev/null +++ b/tools/perf/tests/hists_filter.c @@ -0,0 +1,327 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "util/debug.h" +#include "util/map.h" +#include "util/symbol.h" +#include "util/sort.h" +#include "util/evsel.h" +#include "util/event.h" +#include "util/evlist.h" +#include "util/machine.h" +#include "util/parse-events.h" +#include "tests/tests.h" +#include "tests/hists_common.h" +#include <linux/kernel.h> + +struct sample { + u32 pid; + u64 ip; + struct thread *thread; + struct map *map; + struct symbol *sym; + int socket; +}; + +/* For the numbers, see hists_common.c */ +static struct sample fake_samples[] = { + /* perf [kernel] schedule() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, .socket = 0 }, + /* perf [perf] main() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, .socket = 0 }, + /* perf [libc] malloc() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, .socket = 0 }, + /* perf [perf] main() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, .socket = 0 }, /* will be merged */ + /* perf [perf] cmd_record() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, .socket = 1 }, + /* perf [kernel] page_fault() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 1 }, + /* bash [bash] main() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_MAIN, .socket = 2 }, + /* bash [bash] xmalloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, .socket = 2 }, + /* bash [libc] malloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, .socket = 3 }, + /* bash [kernel] page_fault() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 3 }, +}; + +static int add_hist_entries(struct evlist *evlist, + struct machine *machine) +{ + struct evsel *evsel; + struct addr_location al; + struct perf_sample sample = { .period = 100, }; + size_t i; + + /* + * each evsel will have 10 samples but the 4th sample + * (perf [perf] main) will be collapsed to an existing entry + * so total 9 entries will be in the tree. + */ + evlist__for_each_entry(evlist, evsel) { + for (i = 0; i < ARRAY_SIZE(fake_samples); i++) { + struct hist_entry_iter iter = { + .evsel = evsel, + .sample = &sample, + .ops = &hist_iter_normal, + .hide_unresolved = false, + }; + struct hists *hists = evsel__hists(evsel); + + /* make sure it has no filter at first */ + hists->thread_filter = NULL; + hists->dso_filter = NULL; + hists->symbol_filter_str = NULL; + + sample.cpumode = PERF_RECORD_MISC_USER; + sample.pid = fake_samples[i].pid; + sample.tid = fake_samples[i].pid; + sample.ip = fake_samples[i].ip; + + if (machine__resolve(machine, &al, &sample) < 0) + goto out; + + al.socket = fake_samples[i].socket; + if (hist_entry_iter__add(&iter, &al, + sysctl_perf_event_max_stack, NULL) < 0) { + addr_location__put(&al); + goto out; + } + + fake_samples[i].thread = al.thread; + fake_samples[i].map = al.map; + fake_samples[i].sym = al.sym; + } + } + + return 0; + +out: + pr_debug("Not enough memory for adding a hist entry\n"); + return TEST_FAIL; +} + +int test__hists_filter(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = TEST_FAIL; + struct machines machines; + struct machine *machine; + struct evsel *evsel; + struct evlist *evlist = evlist__new(); + + TEST_ASSERT_VAL("No memory", evlist); + + err = parse_events(evlist, "cpu-clock", NULL); + if (err) + goto out; + err = parse_events(evlist, "task-clock", NULL); + if (err) + goto out; + err = TEST_FAIL; + + /* default sort order (comm,dso,sym) will be used */ + if (setup_sorting(NULL) < 0) + goto out; + + machines__init(&machines); + + /* setup threads/dso/map/symbols also */ + machine = setup_fake_machine(&machines); + if (!machine) + goto out; + + if (verbose > 1) + machine__fprintf(machine, stderr); + + /* process sample events */ + err = add_hist_entries(evlist, machine); + if (err < 0) + goto out; + + evlist__for_each_entry(evlist, evsel) { + struct hists *hists = evsel__hists(evsel); + + hists__collapse_resort(hists, NULL); + evsel__output_resort(evsel, NULL); + + if (verbose > 2) { + pr_info("Normal histogram\n"); + print_hists_out(hists); + } + + TEST_ASSERT_VAL("Invalid nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10); + TEST_ASSERT_VAL("Invalid nr hist entries", + hists->nr_entries == 9); + TEST_ASSERT_VAL("Invalid total period", + hists->stats.total_period == 1000); + TEST_ASSERT_VAL("Unmatched nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == + hists->stats.nr_non_filtered_samples); + TEST_ASSERT_VAL("Unmatched nr hist entries", + hists->nr_entries == hists->nr_non_filtered_entries); + TEST_ASSERT_VAL("Unmatched total period", + hists->stats.total_period == + hists->stats.total_non_filtered_period); + + /* now applying thread filter for 'bash' */ + hists->thread_filter = fake_samples[9].thread; + hists__filter_by_thread(hists); + + if (verbose > 2) { + pr_info("Histogram for thread filter\n"); + print_hists_out(hists); + } + + /* normal stats should be invariant */ + TEST_ASSERT_VAL("Invalid nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10); + TEST_ASSERT_VAL("Invalid nr hist entries", + hists->nr_entries == 9); + TEST_ASSERT_VAL("Invalid total period", + hists->stats.total_period == 1000); + + /* but filter stats are changed */ + TEST_ASSERT_VAL("Unmatched nr samples for thread filter", + hists->stats.nr_non_filtered_samples == 4); + TEST_ASSERT_VAL("Unmatched nr hist entries for thread filter", + hists->nr_non_filtered_entries == 4); + TEST_ASSERT_VAL("Unmatched total period for thread filter", + hists->stats.total_non_filtered_period == 400); + + /* remove thread filter first */ + hists->thread_filter = NULL; + hists__filter_by_thread(hists); + + /* now applying dso filter for 'kernel' */ + hists->dso_filter = fake_samples[0].map->dso; + hists__filter_by_dso(hists); + + if (verbose > 2) { + pr_info("Histogram for dso filter\n"); + print_hists_out(hists); + } + + /* normal stats should be invariant */ + TEST_ASSERT_VAL("Invalid nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10); + TEST_ASSERT_VAL("Invalid nr hist entries", + hists->nr_entries == 9); + TEST_ASSERT_VAL("Invalid total period", + hists->stats.total_period == 1000); + + /* but filter stats are changed */ + TEST_ASSERT_VAL("Unmatched nr samples for dso filter", + hists->stats.nr_non_filtered_samples == 3); + TEST_ASSERT_VAL("Unmatched nr hist entries for dso filter", + hists->nr_non_filtered_entries == 3); + TEST_ASSERT_VAL("Unmatched total period for dso filter", + hists->stats.total_non_filtered_period == 300); + + /* remove dso filter first */ + hists->dso_filter = NULL; + hists__filter_by_dso(hists); + + /* + * now applying symbol filter for 'main'. Also note that + * there's 3 samples that have 'main' symbol but the 4th + * entry of fake_samples was collapsed already so it won't + * be counted as a separate entry but the sample count and + * total period will be remained. + */ + hists->symbol_filter_str = "main"; + hists__filter_by_symbol(hists); + + if (verbose > 2) { + pr_info("Histogram for symbol filter\n"); + print_hists_out(hists); + } + + /* normal stats should be invariant */ + TEST_ASSERT_VAL("Invalid nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10); + TEST_ASSERT_VAL("Invalid nr hist entries", + hists->nr_entries == 9); + TEST_ASSERT_VAL("Invalid total period", + hists->stats.total_period == 1000); + + /* but filter stats are changed */ + TEST_ASSERT_VAL("Unmatched nr samples for symbol filter", + hists->stats.nr_non_filtered_samples == 3); + TEST_ASSERT_VAL("Unmatched nr hist entries for symbol filter", + hists->nr_non_filtered_entries == 2); + TEST_ASSERT_VAL("Unmatched total period for symbol filter", + hists->stats.total_non_filtered_period == 300); + + /* remove symbol filter first */ + hists->symbol_filter_str = NULL; + hists__filter_by_symbol(hists); + + /* now applying socket filters */ + hists->socket_filter = 2; + hists__filter_by_socket(hists); + + if (verbose > 2) { + pr_info("Histogram for socket filters\n"); + print_hists_out(hists); + } + + /* normal stats should be invariant */ + TEST_ASSERT_VAL("Invalid nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10); + TEST_ASSERT_VAL("Invalid nr hist entries", + hists->nr_entries == 9); + TEST_ASSERT_VAL("Invalid total period", + hists->stats.total_period == 1000); + + /* but filter stats are changed */ + TEST_ASSERT_VAL("Unmatched nr samples for socket filter", + hists->stats.nr_non_filtered_samples == 2); + TEST_ASSERT_VAL("Unmatched nr hist entries for socket filter", + hists->nr_non_filtered_entries == 2); + TEST_ASSERT_VAL("Unmatched total period for socket filter", + hists->stats.total_non_filtered_period == 200); + + /* remove socket filter first */ + hists->socket_filter = -1; + hists__filter_by_socket(hists); + + /* now applying all filters at once. */ + hists->thread_filter = fake_samples[1].thread; + hists->dso_filter = fake_samples[1].map->dso; + hists__filter_by_thread(hists); + hists__filter_by_dso(hists); + + if (verbose > 2) { + pr_info("Histogram for all filters\n"); + print_hists_out(hists); + } + + /* normal stats should be invariant */ + TEST_ASSERT_VAL("Invalid nr samples", + hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10); + TEST_ASSERT_VAL("Invalid nr hist entries", + hists->nr_entries == 9); + TEST_ASSERT_VAL("Invalid total period", + hists->stats.total_period == 1000); + + /* but filter stats are changed */ + TEST_ASSERT_VAL("Unmatched nr samples for all filter", + hists->stats.nr_non_filtered_samples == 2); + TEST_ASSERT_VAL("Unmatched nr hist entries for all filter", + hists->nr_non_filtered_entries == 1); + TEST_ASSERT_VAL("Unmatched total period for all filter", + hists->stats.total_non_filtered_period == 200); + } + + + err = TEST_OK; + +out: + /* tear down everything */ + evlist__delete(evlist); + reset_output_field(); + machines__exit(&machines); + + return err; +} diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c new file mode 100644 index 000000000..a024d3f3a --- /dev/null +++ b/tools/perf/tests/hists_link.c @@ -0,0 +1,341 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include "debug.h" +#include "symbol.h" +#include "sort.h" +#include "evsel.h" +#include "evlist.h" +#include "machine.h" +#include "parse-events.h" +#include "hists_common.h" +#include "util/mmap.h" +#include <errno.h> +#include <linux/kernel.h> + +struct sample { + u32 pid; + u64 ip; + struct thread *thread; + struct map *map; + struct symbol *sym; +}; + +/* For the numbers, see hists_common.c */ +static struct sample fake_common_samples[] = { + /* perf [kernel] schedule() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, }, + /* perf [perf] main() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, }, + /* perf [perf] cmd_record() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, }, + /* bash [bash] xmalloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, }, + /* bash [libc] malloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, }, +}; + +static struct sample fake_samples[][5] = { + { + /* perf [perf] run_command() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_RUN_COMMAND, }, + /* perf [libc] malloc() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, }, + /* perf [kernel] page_fault() */ + { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, + /* perf [kernel] sys_perf_event_open() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN, }, + /* bash [libc] free() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_FREE, }, + }, + { + /* perf [libc] free() */ + { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_LIBC_FREE, }, + /* bash [libc] malloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, }, /* will be merged */ + /* bash [bash] xfee() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XFREE, }, + /* bash [libc] realloc() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_REALLOC, }, + /* bash [kernel] page_fault() */ + { .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, + }, +}; + +static int add_hist_entries(struct evlist *evlist, struct machine *machine) +{ + struct evsel *evsel; + struct addr_location al; + struct hist_entry *he; + struct perf_sample sample = { .period = 1, .weight = 1, }; + size_t i = 0, k; + + /* + * each evsel will have 10 samples - 5 common and 5 distinct. + * However the second evsel also has a collapsed entry for + * "bash [libc] malloc" so total 9 entries will be in the tree. + */ + evlist__for_each_entry(evlist, evsel) { + struct hists *hists = evsel__hists(evsel); + + for (k = 0; k < ARRAY_SIZE(fake_common_samples); k++) { + sample.cpumode = PERF_RECORD_MISC_USER; + sample.pid = fake_common_samples[k].pid; + sample.tid = fake_common_samples[k].pid; + sample.ip = fake_common_samples[k].ip; + + if (machine__resolve(machine, &al, &sample) < 0) + goto out; + + he = hists__add_entry(hists, &al, NULL, + NULL, NULL, &sample, true); + if (he == NULL) { + addr_location__put(&al); + goto out; + } + + fake_common_samples[k].thread = al.thread; + fake_common_samples[k].map = al.map; + fake_common_samples[k].sym = al.sym; + } + + for (k = 0; k < ARRAY_SIZE(fake_samples[i]); k++) { + sample.pid = fake_samples[i][k].pid; + sample.tid = fake_samples[i][k].pid; + sample.ip = fake_samples[i][k].ip; + if (machine__resolve(machine, &al, &sample) < 0) + goto out; + + he = hists__add_entry(hists, &al, NULL, + NULL, NULL, &sample, true); + if (he == NULL) { + addr_location__put(&al); + goto out; + } + + fake_samples[i][k].thread = al.thread; + fake_samples[i][k].map = al.map; + fake_samples[i][k].sym = al.sym; + } + i++; + } + + return 0; + +out: + pr_debug("Not enough memory for adding a hist entry\n"); + return -1; +} + +static int find_sample(struct sample *samples, size_t nr_samples, + struct thread *t, struct map *m, struct symbol *s) +{ + while (nr_samples--) { + if (samples->thread == t && samples->map == m && + samples->sym == s) + return 1; + samples++; + } + return 0; +} + +static int __validate_match(struct hists *hists) +{ + size_t count = 0; + struct rb_root_cached *root; + struct rb_node *node; + + /* + * Only entries from fake_common_samples should have a pair. + */ + if (hists__has(hists, need_collapse)) + root = &hists->entries_collapsed; + else + root = hists->entries_in; + + node = rb_first_cached(root); + while (node) { + struct hist_entry *he; + + he = rb_entry(node, struct hist_entry, rb_node_in); + + if (hist_entry__has_pairs(he)) { + if (find_sample(fake_common_samples, + ARRAY_SIZE(fake_common_samples), + he->thread, he->ms.map, he->ms.sym)) { + count++; + } else { + pr_debug("Can't find the matched entry\n"); + return -1; + } + } + + node = rb_next(node); + } + + if (count != ARRAY_SIZE(fake_common_samples)) { + pr_debug("Invalid count for matched entries: %zd of %zd\n", + count, ARRAY_SIZE(fake_common_samples)); + return -1; + } + + return 0; +} + +static int validate_match(struct hists *leader, struct hists *other) +{ + return __validate_match(leader) || __validate_match(other); +} + +static int __validate_link(struct hists *hists, int idx) +{ + size_t count = 0; + size_t count_pair = 0; + size_t count_dummy = 0; + struct rb_root_cached *root; + struct rb_node *node; + + /* + * Leader hists (idx = 0) will have dummy entries from other, + * and some entries will have no pair. However every entry + * in other hists should have (dummy) pair. + */ + if (hists__has(hists, need_collapse)) + root = &hists->entries_collapsed; + else + root = hists->entries_in; + + node = rb_first_cached(root); + while (node) { + struct hist_entry *he; + + he = rb_entry(node, struct hist_entry, rb_node_in); + + if (hist_entry__has_pairs(he)) { + if (!find_sample(fake_common_samples, + ARRAY_SIZE(fake_common_samples), + he->thread, he->ms.map, he->ms.sym) && + !find_sample(fake_samples[idx], + ARRAY_SIZE(fake_samples[idx]), + he->thread, he->ms.map, he->ms.sym)) { + count_dummy++; + } + count_pair++; + } else if (idx) { + pr_debug("A entry from the other hists should have pair\n"); + return -1; + } + + count++; + node = rb_next(node); + } + + /* + * Note that we have a entry collapsed in the other (idx = 1) hists. + */ + if (idx == 0) { + if (count_dummy != ARRAY_SIZE(fake_samples[1]) - 1) { + pr_debug("Invalid count of dummy entries: %zd of %zd\n", + count_dummy, ARRAY_SIZE(fake_samples[1]) - 1); + return -1; + } + if (count != count_pair + ARRAY_SIZE(fake_samples[0])) { + pr_debug("Invalid count of total leader entries: %zd of %zd\n", + count, count_pair + ARRAY_SIZE(fake_samples[0])); + return -1; + } + } else { + if (count != count_pair) { + pr_debug("Invalid count of total other entries: %zd of %zd\n", + count, count_pair); + return -1; + } + if (count_dummy > 0) { + pr_debug("Other hists should not have dummy entries: %zd\n", + count_dummy); + return -1; + } + } + + return 0; +} + +static int validate_link(struct hists *leader, struct hists *other) +{ + return __validate_link(leader, 0) || __validate_link(other, 1); +} + +int test__hists_link(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = -1; + struct hists *hists, *first_hists; + struct machines machines; + struct machine *machine = NULL; + struct evsel *evsel, *first; + struct evlist *evlist = evlist__new(); + + if (evlist == NULL) + return -ENOMEM; + + err = parse_events(evlist, "cpu-clock", NULL); + if (err) + goto out; + err = parse_events(evlist, "task-clock", NULL); + if (err) + goto out; + + err = TEST_FAIL; + /* default sort order (comm,dso,sym) will be used */ + if (setup_sorting(NULL) < 0) + goto out; + + machines__init(&machines); + + /* setup threads/dso/map/symbols also */ + machine = setup_fake_machine(&machines); + if (!machine) + goto out; + + if (verbose > 1) + machine__fprintf(machine, stderr); + + /* process sample events */ + err = add_hist_entries(evlist, machine); + if (err < 0) + goto out; + + evlist__for_each_entry(evlist, evsel) { + hists = evsel__hists(evsel); + hists__collapse_resort(hists, NULL); + + if (verbose > 2) + print_hists_in(hists); + } + + first = evlist__first(evlist); + evsel = evlist__last(evlist); + + first_hists = evsel__hists(first); + hists = evsel__hists(evsel); + + /* match common entries */ + hists__match(first_hists, hists); + err = validate_match(first_hists, hists); + if (err) + goto out; + + /* link common and/or dummy entries */ + hists__link(first_hists, hists); + err = validate_link(first_hists, hists); + if (err) + goto out; + + err = 0; + +out: + /* tear down everything */ + evlist__delete(evlist); + reset_output_field(); + machines__exit(&machines); + + return err; +} diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c new file mode 100644 index 000000000..8973f35df --- /dev/null +++ b/tools/perf/tests/hists_output.c @@ -0,0 +1,625 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "util/debug.h" +#include "util/dso.h" +#include "util/event.h" +#include "util/map.h" +#include "util/symbol.h" +#include "util/sort.h" +#include "util/evsel.h" +#include "util/evlist.h" +#include "util/machine.h" +#include "util/thread.h" +#include "util/parse-events.h" +#include "tests/tests.h" +#include "tests/hists_common.h" +#include <linux/kernel.h> + +struct sample { + u32 cpu; + u32 pid; + u64 ip; + struct thread *thread; + struct map *map; + struct symbol *sym; +}; + +/* For the numbers, see hists_common.c */ +static struct sample fake_samples[] = { + /* perf [kernel] schedule() */ + { .cpu = 0, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, }, + /* perf [perf] main() */ + { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, }, + /* perf [perf] cmd_record() */ + { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, }, + /* perf [libc] malloc() */ + { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, }, + /* perf [libc] free() */ + { .cpu = 2, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, }, + /* perf [perf] main() */ + { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, }, + /* perf [kernel] page_fault() */ + { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, + /* bash [bash] main() */ + { .cpu = 3, .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_MAIN, }, + /* bash [bash] xmalloc() */ + { .cpu = 0, .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, }, + /* bash [kernel] page_fault() */ + { .cpu = 1, .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, }, +}; + +static int add_hist_entries(struct hists *hists, struct machine *machine) +{ + struct addr_location al; + struct evsel *evsel = hists_to_evsel(hists); + struct perf_sample sample = { .period = 100, }; + size_t i; + + for (i = 0; i < ARRAY_SIZE(fake_samples); i++) { + struct hist_entry_iter iter = { + .evsel = evsel, + .sample = &sample, + .ops = &hist_iter_normal, + .hide_unresolved = false, + }; + + sample.cpumode = PERF_RECORD_MISC_USER; + sample.cpu = fake_samples[i].cpu; + sample.pid = fake_samples[i].pid; + sample.tid = fake_samples[i].pid; + sample.ip = fake_samples[i].ip; + + if (machine__resolve(machine, &al, &sample) < 0) + goto out; + + if (hist_entry_iter__add(&iter, &al, sysctl_perf_event_max_stack, + NULL) < 0) { + addr_location__put(&al); + goto out; + } + + fake_samples[i].thread = al.thread; + fake_samples[i].map = al.map; + fake_samples[i].sym = al.sym; + } + + return TEST_OK; + +out: + pr_debug("Not enough memory for adding a hist entry\n"); + return TEST_FAIL; +} + +static void del_hist_entries(struct hists *hists) +{ + struct hist_entry *he; + struct rb_root_cached *root_in; + struct rb_root_cached *root_out; + struct rb_node *node; + + if (hists__has(hists, need_collapse)) + root_in = &hists->entries_collapsed; + else + root_in = hists->entries_in; + + root_out = &hists->entries; + + while (!RB_EMPTY_ROOT(&root_out->rb_root)) { + node = rb_first_cached(root_out); + + he = rb_entry(node, struct hist_entry, rb_node); + rb_erase_cached(node, root_out); + rb_erase_cached(&he->rb_node_in, root_in); + hist_entry__delete(he); + } +} + +typedef int (*test_fn_t)(struct evsel *, struct machine *); + +#define COMM(he) (thread__comm_str(he->thread)) +#define DSO(he) (he->ms.map->dso->short_name) +#define SYM(he) (he->ms.sym->name) +#define CPU(he) (he->cpu) +#define PID(he) (he->thread->tid) + +/* default sort keys (no field) */ +static int test1(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + struct hist_entry *he; + struct rb_root_cached *root; + struct rb_node *node; + + field_order = NULL; + sort_order = NULL; /* equivalent to sort_order = "comm,dso,sym" */ + + setup_sorting(NULL); + + /* + * expected output: + * + * Overhead Command Shared Object Symbol + * ======== ======= ============= ============== + * 20.00% perf perf [.] main + * 10.00% bash [kernel] [k] page_fault + * 10.00% bash bash [.] main + * 10.00% bash bash [.] xmalloc + * 10.00% perf [kernel] [k] page_fault + * 10.00% perf [kernel] [k] schedule + * 10.00% perf libc [.] free + * 10.00% perf libc [.] malloc + * 10.00% perf perf [.] cmd_record + */ + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + hists__collapse_resort(hists, NULL); + evsel__output_resort(evsel, NULL); + + if (verbose > 2) { + pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); + print_hists_out(hists); + } + + root = &hists->entries; + node = rb_first_cached(root); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") && + !strcmp(SYM(he), "main") && he->stat.period == 200); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") && + !strcmp(SYM(he), "page_fault") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") && + !strcmp(SYM(he), "main") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") && + !strcmp(SYM(he), "xmalloc") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") && + !strcmp(SYM(he), "page_fault") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") && + !strcmp(SYM(he), "schedule") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") && + !strcmp(SYM(he), "free") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") && + !strcmp(SYM(he), "malloc") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") && + !strcmp(SYM(he), "cmd_record") && he->stat.period == 100); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* mixed fields and sort keys */ +static int test2(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + struct hist_entry *he; + struct rb_root_cached *root; + struct rb_node *node; + + field_order = "overhead,cpu"; + sort_order = "pid"; + + setup_sorting(NULL); + + /* + * expected output: + * + * Overhead CPU Command: Pid + * ======== === ============= + * 30.00% 1 perf : 100 + * 10.00% 0 perf : 100 + * 10.00% 2 perf : 100 + * 20.00% 2 perf : 200 + * 10.00% 0 bash : 300 + * 10.00% 1 bash : 300 + * 10.00% 3 bash : 300 + */ + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + hists__collapse_resort(hists, NULL); + evsel__output_resort(evsel, NULL); + + if (verbose > 2) { + pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); + print_hists_out(hists); + } + + root = &hists->entries; + node = rb_first_cached(root); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 1 && PID(he) == 100 && he->stat.period == 300); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 0 && PID(he) == 100 && he->stat.period == 100); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* fields only (no sort key) */ +static int test3(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + struct hist_entry *he; + struct rb_root_cached *root; + struct rb_node *node; + + field_order = "comm,overhead,dso"; + sort_order = NULL; + + setup_sorting(NULL); + + /* + * expected output: + * + * Command Overhead Shared Object + * ======= ======== ============= + * bash 20.00% bash + * bash 10.00% [kernel] + * perf 30.00% perf + * perf 20.00% [kernel] + * perf 20.00% libc + */ + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + hists__collapse_resort(hists, NULL); + evsel__output_resort(evsel, NULL); + + if (verbose > 2) { + pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); + print_hists_out(hists); + } + + root = &hists->entries; + node = rb_first_cached(root); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") && + he->stat.period == 200); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") && + he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") && + he->stat.period == 300); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") && + he->stat.period == 200); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") && + he->stat.period == 200); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* handle duplicate 'dso' field */ +static int test4(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + struct hist_entry *he; + struct rb_root_cached *root; + struct rb_node *node; + + field_order = "dso,sym,comm,overhead,dso"; + sort_order = "sym"; + + setup_sorting(NULL); + + /* + * expected output: + * + * Shared Object Symbol Command Overhead + * ============= ============== ======= ======== + * perf [.] cmd_record perf 10.00% + * libc [.] free perf 10.00% + * bash [.] main bash 10.00% + * perf [.] main perf 20.00% + * libc [.] malloc perf 10.00% + * [kernel] [k] page_fault bash 10.00% + * [kernel] [k] page_fault perf 10.00% + * [kernel] [k] schedule perf 10.00% + * bash [.] xmalloc bash 10.00% + */ + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + hists__collapse_resort(hists, NULL); + evsel__output_resort(evsel, NULL); + + if (verbose > 2) { + pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); + print_hists_out(hists); + } + + root = &hists->entries; + node = rb_first_cached(root); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "cmd_record") && + !strcmp(COMM(he), "perf") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "free") && + !strcmp(COMM(he), "perf") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "main") && + !strcmp(COMM(he), "bash") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "main") && + !strcmp(COMM(he), "perf") && he->stat.period == 200); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "malloc") && + !strcmp(COMM(he), "perf") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") && + !strcmp(COMM(he), "bash") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") && + !strcmp(COMM(he), "perf") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "schedule") && + !strcmp(COMM(he), "perf") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "xmalloc") && + !strcmp(COMM(he), "bash") && he->stat.period == 100); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +/* full sort keys w/o overhead field */ +static int test5(struct evsel *evsel, struct machine *machine) +{ + int err; + struct hists *hists = evsel__hists(evsel); + struct hist_entry *he; + struct rb_root_cached *root; + struct rb_node *node; + + field_order = "cpu,pid,comm,dso,sym"; + sort_order = "dso,pid"; + + setup_sorting(NULL); + + /* + * expected output: + * + * CPU Command: Pid Command Shared Object Symbol + * === ============= ======= ============= ============== + * 0 perf: 100 perf [kernel] [k] schedule + * 2 perf: 200 perf [kernel] [k] page_fault + * 1 bash: 300 bash [kernel] [k] page_fault + * 0 bash: 300 bash bash [.] xmalloc + * 3 bash: 300 bash bash [.] main + * 1 perf: 100 perf libc [.] malloc + * 2 perf: 100 perf libc [.] free + * 1 perf: 100 perf perf [.] cmd_record + * 1 perf: 100 perf perf [.] main + * 2 perf: 200 perf perf [.] main + */ + err = add_hist_entries(hists, machine); + if (err < 0) + goto out; + + hists__collapse_resort(hists, NULL); + evsel__output_resort(evsel, NULL); + + if (verbose > 2) { + pr_info("[fields = %s, sort = %s]\n", field_order, sort_order); + print_hists_out(hists); + } + + root = &hists->entries; + node = rb_first_cached(root); + he = rb_entry(node, struct hist_entry, rb_node); + + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 0 && PID(he) == 100 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") && + !strcmp(SYM(he), "schedule") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 2 && PID(he) == 200 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") && + !strcmp(SYM(he), "page_fault") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 1 && PID(he) == 300 && + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") && + !strcmp(SYM(he), "page_fault") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 0 && PID(he) == 300 && + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") && + !strcmp(SYM(he), "xmalloc") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 3 && PID(he) == 300 && + !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") && + !strcmp(SYM(he), "main") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 1 && PID(he) == 100 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") && + !strcmp(SYM(he), "malloc") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 2 && PID(he) == 100 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") && + !strcmp(SYM(he), "free") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 1 && PID(he) == 100 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") && + !strcmp(SYM(he), "cmd_record") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 1 && PID(he) == 100 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") && + !strcmp(SYM(he), "main") && he->stat.period == 100); + + node = rb_next(node); + he = rb_entry(node, struct hist_entry, rb_node); + TEST_ASSERT_VAL("Invalid hist entry", + CPU(he) == 2 && PID(he) == 200 && + !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") && + !strcmp(SYM(he), "main") && he->stat.period == 100); + +out: + del_hist_entries(hists); + reset_output_field(); + return err; +} + +int test__hists_output(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = TEST_FAIL; + struct machines machines; + struct machine *machine; + struct evsel *evsel; + struct evlist *evlist = evlist__new(); + size_t i; + test_fn_t testcases[] = { + test1, + test2, + test3, + test4, + test5, + }; + + TEST_ASSERT_VAL("No memory", evlist); + + err = parse_events(evlist, "cpu-clock", NULL); + if (err) + goto out; + err = TEST_FAIL; + + machines__init(&machines); + + /* setup threads/dso/map/symbols also */ + machine = setup_fake_machine(&machines); + if (!machine) + goto out; + + if (verbose > 1) + machine__fprintf(machine, stderr); + + evsel = evlist__first(evlist); + + for (i = 0; i < ARRAY_SIZE(testcases); i++) { + err = testcases[i](evsel, machine); + if (err < 0) + break; + } + +out: + /* tear down everything */ + evlist__delete(evlist); + machines__exit(&machines); + + return err; +} diff --git a/tools/perf/tests/is_printable_array.c b/tools/perf/tests/is_printable_array.c new file mode 100644 index 000000000..9c7b3baca --- /dev/null +++ b/tools/perf/tests/is_printable_array.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/kernel.h> +#include "tests.h" +#include "debug.h" +#include "print_binary.h" + +int test__is_printable_array(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + char buf1[] = { 'k', 'r', 4, 'v', 'a', 0 }; + char buf2[] = { 'k', 'r', 'a', 'v', 4, 0 }; + struct { + char *buf; + unsigned int len; + int ret; + } t[] = { + { (char *) "krava", sizeof("krava"), 1 }, + { (char *) "krava", sizeof("krava") - 1, 0 }, + { (char *) "", sizeof(""), 1 }, + { (char *) "", 0, 0 }, + { NULL, 0, 0 }, + { buf1, sizeof(buf1), 0 }, + { buf2, sizeof(buf2), 0 }, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(t); i++) { + int ret; + + ret = is_printable_array((char *) t[i].buf, t[i].len); + if (ret != t[i].ret) { + pr_err("failed: test %u\n", i); + return TEST_FAIL; + } + } + + return TEST_OK; +} diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c new file mode 100644 index 000000000..50a0c9fcd --- /dev/null +++ b/tools/perf/tests/keep-tracking.c @@ -0,0 +1,163 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/types.h> +#include <limits.h> +#include <unistd.h> +#include <sys/prctl.h> +#include <perf/cpumap.h> +#include <perf/evlist.h> +#include <perf/mmap.h> + +#include "debug.h" +#include "parse-events.h" +#include "evlist.h" +#include "evsel.h" +#include "record.h" +#include "thread_map.h" +#include "tests.h" +#include "util/mmap.h" + +#define CHECK__(x) { \ + while ((x) < 0) { \ + pr_debug(#x " failed!\n"); \ + goto out_err; \ + } \ +} + +#define CHECK_NOT_NULL__(x) { \ + while ((x) == NULL) { \ + pr_debug(#x " failed!\n"); \ + goto out_err; \ + } \ +} + +static int find_comm(struct evlist *evlist, const char *comm) +{ + union perf_event *event; + struct mmap *md; + int i, found; + + found = 0; + for (i = 0; i < evlist->core.nr_mmaps; i++) { + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + if (event->header.type == PERF_RECORD_COMM && + (pid_t)event->comm.pid == getpid() && + (pid_t)event->comm.tid == getpid() && + strcmp(event->comm.comm, comm) == 0) + found += 1; + perf_mmap__consume(&md->core); + } + perf_mmap__read_done(&md->core); + } + return found; +} + +/** + * test__keep_tracking - test using a dummy software event to keep tracking. + * + * This function implements a test that checks that tracking events continue + * when an event is disabled but a dummy software event is not disabled. If the + * test passes %0 is returned, otherwise %-1 is returned. + */ +int test__keep_tracking(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct record_opts opts = { + .mmap_pages = UINT_MAX, + .user_freq = UINT_MAX, + .user_interval = ULLONG_MAX, + .target = { + .uses_mmap = true, + }, + }; + struct perf_thread_map *threads = NULL; + struct perf_cpu_map *cpus = NULL; + struct evlist *evlist = NULL; + struct evsel *evsel = NULL; + int found, err = -1; + const char *comm; + + threads = thread_map__new(-1, getpid(), UINT_MAX); + CHECK_NOT_NULL__(threads); + + cpus = perf_cpu_map__new(NULL); + CHECK_NOT_NULL__(cpus); + + evlist = evlist__new(); + CHECK_NOT_NULL__(evlist); + + perf_evlist__set_maps(&evlist->core, cpus, threads); + + CHECK__(parse_events(evlist, "dummy:u", NULL)); + CHECK__(parse_events(evlist, "cycles:u", NULL)); + + perf_evlist__config(evlist, &opts, NULL); + + evsel = evlist__first(evlist); + + evsel->core.attr.comm = 1; + evsel->core.attr.disabled = 1; + evsel->core.attr.enable_on_exec = 0; + + if (evlist__open(evlist) < 0) { + pr_debug("Unable to open dummy and cycles event\n"); + err = TEST_SKIP; + goto out_err; + } + + CHECK__(evlist__mmap(evlist, UINT_MAX)); + + /* + * First, test that a 'comm' event can be found when the event is + * enabled. + */ + + evlist__enable(evlist); + + comm = "Test COMM 1"; + CHECK__(prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0)); + + evlist__disable(evlist); + + found = find_comm(evlist, comm); + if (found != 1) { + pr_debug("First time, failed to find tracking event.\n"); + goto out_err; + } + + /* + * Secondly, test that a 'comm' event can be found when the event is + * disabled with the dummy event still enabled. + */ + + evlist__enable(evlist); + + evsel = evlist__last(evlist); + + CHECK__(evsel__disable(evsel)); + + comm = "Test COMM 2"; + CHECK__(prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0)); + + evlist__disable(evlist); + + found = find_comm(evlist, comm); + if (found != 1) { + pr_debug("Second time, failed to find tracking event.\n"); + goto out_err; + } + + err = 0; + +out_err: + if (evlist) { + evlist__disable(evlist); + evlist__delete(evlist); + } else { + perf_cpu_map__put(cpus); + perf_thread_map__put(threads); + } + + return err; +} diff --git a/tools/perf/tests/kmod-path.c b/tools/perf/tests/kmod-path.c new file mode 100644 index 000000000..e483210b1 --- /dev/null +++ b/tools/perf/tests/kmod-path.c @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include "tests.h" +#include "dso.h" +#include "debug.h" +#include "event.h" + +static int test(const char *path, bool alloc_name, bool kmod, + int comp, const char *name) +{ + struct kmod_path m; + + memset(&m, 0x0, sizeof(m)); + + TEST_ASSERT_VAL("kmod_path__parse", + !__kmod_path__parse(&m, path, alloc_name)); + + pr_debug("%s - alloc name %d, kmod %d, comp %d, name '%s'\n", + path, alloc_name, m.kmod, m.comp, m.name); + + TEST_ASSERT_VAL("wrong kmod", m.kmod == kmod); + TEST_ASSERT_VAL("wrong comp", m.comp == comp); + + if (name) + TEST_ASSERT_VAL("wrong name", m.name && !strcmp(name, m.name)); + else + TEST_ASSERT_VAL("wrong name", !m.name); + + free(m.name); + return 0; +} + +static int test_is_kernel_module(const char *path, int cpumode, bool expect) +{ + TEST_ASSERT_VAL("is_kernel_module", + (!!is_kernel_module(path, cpumode)) == (!!expect)); + pr_debug("%s (cpumode: %d) - is_kernel_module: %s\n", + path, cpumode, expect ? "true" : "false"); + return 0; +} + +#define T(path, an, k, c, n) \ + TEST_ASSERT_VAL("failed", !test(path, an, k, c, n)) + +#define M(path, c, e) \ + TEST_ASSERT_VAL("failed", !test_is_kernel_module(path, c, e)) + +int test__kmod_path__parse(struct test *t __maybe_unused, int subtest __maybe_unused) +{ + /* path alloc_name kmod comp name */ + T("/xxxx/xxxx/x-x.ko", true , true, 0 , "[x_x]"); + T("/xxxx/xxxx/x-x.ko", false , true, 0 , NULL ); + T("/xxxx/xxxx/x-x.ko", true , true, 0 , "[x_x]"); + T("/xxxx/xxxx/x-x.ko", false , true, 0 , NULL ); + M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true); + M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_KERNEL, true); + M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_USER, false); + +#ifdef HAVE_ZLIB_SUPPORT + /* path alloc_name kmod comp name */ + T("/xxxx/xxxx/x.ko.gz", true , true, 1 , "[x]"); + T("/xxxx/xxxx/x.ko.gz", false , true, 1 , NULL ); + T("/xxxx/xxxx/x.ko.gz", true , true, 1 , "[x]"); + T("/xxxx/xxxx/x.ko.gz", false , true, 1 , NULL ); + M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true); + M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_KERNEL, true); + M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("/xxxx/xxxx/x.gz", true , false, 1 , "x.gz"); + T("/xxxx/xxxx/x.gz", false , false, 1 , NULL ); + T("/xxxx/xxxx/x.gz", true , false, 1 , "x.gz"); + T("/xxxx/xxxx/x.gz", false , false, 1 , NULL ); + M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_KERNEL, false); + M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("x.gz", true , false, 1 , "x.gz"); + T("x.gz", false , false, 1 , NULL ); + T("x.gz", true , false, 1 , "x.gz"); + T("x.gz", false , false, 1 , NULL ); + M("x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("x.gz", PERF_RECORD_MISC_KERNEL, false); + M("x.gz", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("x.ko.gz", true , true, 1 , "[x]"); + T("x.ko.gz", false , true, 1 , NULL ); + T("x.ko.gz", true , true, 1 , "[x]"); + T("x.ko.gz", false , true, 1 , NULL ); + M("x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true); + M("x.ko.gz", PERF_RECORD_MISC_KERNEL, true); + M("x.ko.gz", PERF_RECORD_MISC_USER, false); +#endif + + /* path alloc_name kmod comp name */ + T("[test_module]", true , true, false, "[test_module]"); + T("[test_module]", false , true, false, NULL ); + T("[test_module]", true , true, false, "[test_module]"); + T("[test_module]", false , true, false, NULL ); + M("[test_module]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true); + M("[test_module]", PERF_RECORD_MISC_KERNEL, true); + M("[test_module]", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("[test.module]", true , true, false, "[test.module]"); + T("[test.module]", false , true, false, NULL ); + T("[test.module]", true , true, false, "[test.module]"); + T("[test.module]", false , true, false, NULL ); + M("[test.module]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true); + M("[test.module]", PERF_RECORD_MISC_KERNEL, true); + M("[test.module]", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("[vdso]", true , false, false, "[vdso]"); + T("[vdso]", false , false, false, NULL ); + T("[vdso]", true , false, false, "[vdso]"); + T("[vdso]", false , false, false, NULL ); + M("[vdso]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("[vdso]", PERF_RECORD_MISC_KERNEL, false); + M("[vdso]", PERF_RECORD_MISC_USER, false); + + T("[vdso32]", true , false, false, "[vdso32]"); + T("[vdso32]", false , false, false, NULL ); + T("[vdso32]", true , false, false, "[vdso32]"); + T("[vdso32]", false , false, false, NULL ); + M("[vdso32]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("[vdso32]", PERF_RECORD_MISC_KERNEL, false); + M("[vdso32]", PERF_RECORD_MISC_USER, false); + + T("[vdsox32]", true , false, false, "[vdsox32]"); + T("[vdsox32]", false , false, false, NULL ); + T("[vdsox32]", true , false, false, "[vdsox32]"); + T("[vdsox32]", false , false, false, NULL ); + M("[vdsox32]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("[vdsox32]", PERF_RECORD_MISC_KERNEL, false); + M("[vdsox32]", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("[vsyscall]", true , false, false, "[vsyscall]"); + T("[vsyscall]", false , false, false, NULL ); + T("[vsyscall]", true , false, false, "[vsyscall]"); + T("[vsyscall]", false , false, false, NULL ); + M("[vsyscall]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("[vsyscall]", PERF_RECORD_MISC_KERNEL, false); + M("[vsyscall]", PERF_RECORD_MISC_USER, false); + + /* path alloc_name kmod comp name */ + T("[kernel.kallsyms]", true , false, false, "[kernel.kallsyms]"); + T("[kernel.kallsyms]", false , false, false, NULL ); + T("[kernel.kallsyms]", true , false, false, "[kernel.kallsyms]"); + T("[kernel.kallsyms]", false , false, false, NULL ); + M("[kernel.kallsyms]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false); + M("[kernel.kallsyms]", PERF_RECORD_MISC_KERNEL, false); + M("[kernel.kallsyms]", PERF_RECORD_MISC_USER, false); + + return 0; +} diff --git a/tools/perf/tests/llvm.c b/tools/perf/tests/llvm.c new file mode 100644 index 000000000..ae6cda81c --- /dev/null +++ b/tools/perf/tests/llvm.c @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <bpf/libbpf.h> +#include <util/llvm-utils.h> +#include "llvm.h" +#include "tests.h" +#include "debug.h" + +#ifdef HAVE_LIBBPF_SUPPORT +static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz) +{ + struct bpf_object *obj; + + obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL); + if (libbpf_get_error(obj)) + return TEST_FAIL; + bpf_object__close(obj); + return TEST_OK; +} +#else +static int test__bpf_parsing(void *obj_buf __maybe_unused, + size_t obj_buf_sz __maybe_unused) +{ + pr_debug("Skip bpf parsing\n"); + return TEST_OK; +} +#endif + +static struct { + const char *source; + const char *desc; + bool should_load_fail; +} bpf_source_table[__LLVM_TESTCASE_MAX] = { + [LLVM_TESTCASE_BASE] = { + .source = test_llvm__bpf_base_prog, + .desc = "Basic BPF llvm compile", + }, + [LLVM_TESTCASE_KBUILD] = { + .source = test_llvm__bpf_test_kbuild_prog, + .desc = "kbuild searching", + }, + [LLVM_TESTCASE_BPF_PROLOGUE] = { + .source = test_llvm__bpf_test_prologue_prog, + .desc = "Compile source for BPF prologue generation", + }, + [LLVM_TESTCASE_BPF_RELOCATION] = { + .source = test_llvm__bpf_test_relocation, + .desc = "Compile source for BPF relocation", + .should_load_fail = true, + }, +}; + +int +test_llvm__fetch_bpf_obj(void **p_obj_buf, + size_t *p_obj_buf_sz, + enum test_llvm__testcase idx, + bool force, + bool *should_load_fail) +{ + const char *source; + const char *desc; + const char *tmpl_old, *clang_opt_old; + char *tmpl_new = NULL, *clang_opt_new = NULL; + int err, old_verbose, ret = TEST_FAIL; + + if (idx >= __LLVM_TESTCASE_MAX) + return TEST_FAIL; + + source = bpf_source_table[idx].source; + desc = bpf_source_table[idx].desc; + if (should_load_fail) + *should_load_fail = bpf_source_table[idx].should_load_fail; + + /* + * Skip this test if user's .perfconfig doesn't set [llvm] section + * and clang is not found in $PATH, and this is not perf test -v + */ + if (!force && (verbose <= 0 && + !llvm_param.user_set_param && + llvm__search_clang())) { + pr_debug("No clang and no verbosive, skip this test\n"); + return TEST_SKIP; + } + + /* + * llvm is verbosity when error. Suppress all error output if + * not 'perf test -v'. + */ + old_verbose = verbose; + if (verbose == 0) + verbose = -1; + + *p_obj_buf = NULL; + *p_obj_buf_sz = 0; + + if (!llvm_param.clang_bpf_cmd_template) + goto out; + + if (!llvm_param.clang_opt) + llvm_param.clang_opt = strdup(""); + + err = asprintf(&tmpl_new, "echo '%s' | %s%s", source, + llvm_param.clang_bpf_cmd_template, + old_verbose ? "" : " 2>/dev/null"); + if (err < 0) + goto out; + err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt); + if (err < 0) + goto out; + + tmpl_old = llvm_param.clang_bpf_cmd_template; + llvm_param.clang_bpf_cmd_template = tmpl_new; + clang_opt_old = llvm_param.clang_opt; + llvm_param.clang_opt = clang_opt_new; + + err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz); + + llvm_param.clang_bpf_cmd_template = tmpl_old; + llvm_param.clang_opt = clang_opt_old; + + verbose = old_verbose; + if (err) + goto out; + + ret = TEST_OK; +out: + free(tmpl_new); + free(clang_opt_new); + if (ret != TEST_OK) + pr_debug("Failed to compile test case: '%s'\n", desc); + return ret; +} + +int test__llvm(struct test *test __maybe_unused, int subtest) +{ + int ret; + void *obj_buf = NULL; + size_t obj_buf_sz = 0; + bool should_load_fail = false; + + if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX)) + return TEST_FAIL; + + ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz, + subtest, false, &should_load_fail); + + if (ret == TEST_OK && !should_load_fail) { + ret = test__bpf_parsing(obj_buf, obj_buf_sz); + if (ret != TEST_OK) { + pr_debug("Failed to parse test case '%s'\n", + bpf_source_table[subtest].desc); + } + } + free(obj_buf); + + return ret; +} + +int test__llvm_subtest_get_nr(void) +{ + return __LLVM_TESTCASE_MAX; +} + +const char *test__llvm_subtest_get_desc(int subtest) +{ + if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX)) + return NULL; + + return bpf_source_table[subtest].desc; +} diff --git a/tools/perf/tests/llvm.h b/tools/perf/tests/llvm.h new file mode 100644 index 000000000..f68b0d9b8 --- /dev/null +++ b/tools/perf/tests/llvm.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef PERF_TEST_LLVM_H +#define PERF_TEST_LLVM_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <stddef.h> /* for size_t */ +#include <stdbool.h> /* for bool */ + +extern const char test_llvm__bpf_base_prog[]; +extern const char test_llvm__bpf_test_kbuild_prog[]; +extern const char test_llvm__bpf_test_prologue_prog[]; +extern const char test_llvm__bpf_test_relocation[]; + +enum test_llvm__testcase { + LLVM_TESTCASE_BASE, + LLVM_TESTCASE_KBUILD, + LLVM_TESTCASE_BPF_PROLOGUE, + LLVM_TESTCASE_BPF_RELOCATION, + __LLVM_TESTCASE_MAX, +}; + +int test_llvm__fetch_bpf_obj(void **p_obj_buf, size_t *p_obj_buf_sz, + enum test_llvm__testcase index, bool force, + bool *should_load_fail); +#ifdef __cplusplus +} +#endif +#endif diff --git a/tools/perf/tests/make b/tools/perf/tests/make new file mode 100644 index 000000000..a90fa043c --- /dev/null +++ b/tools/perf/tests/make @@ -0,0 +1,387 @@ +include ../scripts/Makefile.include + +ifndef MK +ifeq ($(MAKECMDGOALS),) +# no target specified, trigger the whole suite +all: + @echo "Testing Makefile"; $(MAKE) -sf tests/make MK=Makefile + @echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf SET_PARALLEL=1 SET_O=1 +else +# run only specific test over 'Makefile' +%: + @echo "Testing Makefile"; $(MAKE) -sf tests/make MK=Makefile $@ +endif +else +PERF := . +PERF_O := $(PERF) +O_OPT := +FULL_O := $(shell readlink -f $(PERF_O) || echo $(PERF_O)) + +ifneq ($(O),) + FULL_O := $(shell readlink -f $(O) || echo $(O)) + PERF_O := $(FULL_O) + ifeq ($(SET_O),1) + O_OPT := 'O=$(FULL_O)' + endif + K_O_OPT := 'O=$(FULL_O)' +endif + +PARALLEL_OPT= +ifeq ($(SET_PARALLEL),1) + ifeq ($(JOBS),) + cores := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null) + ifeq ($(cores),0) + cores := 1 + endif + else + cores=$(JOBS) + endif + PARALLEL_OPT="-j$(cores)" +endif + +# As per kernel Makefile, avoid funny character set dependencies +unexport LC_ALL +LC_COLLATE=C +LC_NUMERIC=C +export LC_COLLATE LC_NUMERIC + +ifeq ($(srctree),) +srctree := $(patsubst %/,%,$(dir $(CURDIR))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +#$(info Determined 'srctree' to be $(srctree)) +endif + +include $(srctree)/tools/scripts/Makefile.arch + +# FIXME looks like x86 is the only arch running tests ;-) +# we need some IS_(32/64) flag to make this generic +ifeq ($(ARCH)$(IS_64_BIT), x861) +lib = lib64 +else +lib = lib +endif + +has = $(shell which $1 2>/dev/null) + +# standard single make variable specified +make_clean_all := clean all +make_python_perf_so := python/perf.so +make_debug := DEBUG=1 +make_no_libperl := NO_LIBPERL=1 +make_no_libpython := NO_LIBPYTHON=1 +make_no_scripts := NO_LIBPYTHON=1 NO_LIBPERL=1 +make_no_newt := NO_NEWT=1 +make_no_slang := NO_SLANG=1 +make_no_gtk2 := NO_GTK2=1 +make_no_ui := NO_NEWT=1 NO_SLANG=1 NO_GTK2=1 +make_no_demangle := NO_DEMANGLE=1 +make_no_libelf := NO_LIBELF=1 +make_no_libunwind := NO_LIBUNWIND=1 +make_no_libdw_dwarf_unwind := NO_LIBDW_DWARF_UNWIND=1 +make_no_backtrace := NO_BACKTRACE=1 +make_no_libnuma := NO_LIBNUMA=1 +make_no_libaudit := NO_LIBAUDIT=1 +make_no_libbionic := NO_LIBBIONIC=1 +make_no_auxtrace := NO_AUXTRACE=1 +make_no_libbpf := NO_LIBBPF=1 +make_no_libbpf_DEBUG := NO_LIBBPF=1 DEBUG=1 +make_no_libcrypto := NO_LIBCRYPTO=1 +make_with_babeltrace:= LIBBABELTRACE=1 +make_no_sdt := NO_SDT=1 +make_no_syscall_tbl := NO_SYSCALL_TABLE=1 +make_with_clangllvm := LIBCLANGLLVM=1 +make_with_libpfm4 := LIBPFM4=1 +make_with_gtk2 := GTK2=1 +make_tags := tags +make_cscope := cscope +make_help := help +make_doc := doc +make_perf_o := perf.o +make_util_map_o := util/map.o +make_util_pmu_bison_o := util/pmu-bison.o +make_install := install +make_install_bin := install-bin +make_install_doc := install-doc +make_install_man := install-man +make_install_html := install-html +make_install_info := install-info +make_install_pdf := install-pdf +make_install_prefix := install prefix=/tmp/krava +make_install_prefix_slash := install prefix=/tmp/krava/ +make_static := LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1 NO_JVMTI=1 + +# all the NO_* variable combined +make_minimal := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 +make_minimal += NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 +make_minimal += NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 +make_minimal += NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 +make_minimal += NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1 +make_minimal += NO_LIBCAP=1 NO_SYSCALL_TABLE=1 + +# $(run) contains all available tests +run := make_pure +# Targets 'clean all' can be run together only through top level +# Makefile because we detect clean target in Makefile.perf and +# disable features detection +ifeq ($(MK),Makefile) +run += make_clean_all +MAKE_F := $(MAKE) +else +MAKE_F := $(MAKE) -f $(MK) +endif +run += make_python_perf_so +run += make_debug +run += make_no_libperl +run += make_no_libpython +run += make_no_scripts +run += make_no_newt +run += make_no_slang +run += make_no_gtk2 +run += make_no_ui +run += make_no_demangle +run += make_no_libelf +run += make_no_libunwind +run += make_no_libdw_dwarf_unwind +run += make_no_backtrace +run += make_no_libnuma +run += make_no_libaudit +run += make_no_libbionic +run += make_no_auxtrace +run += make_no_libbpf +run += make_no_libbpf_DEBUG +run += make_no_libcrypto +run += make_no_sdt +run += make_no_syscall_tbl +run += make_with_babeltrace +run += make_with_clangllvm +run += make_with_libpfm4 +run += make_with_gtk2 +run += make_help +run += make_doc +run += make_perf_o +run += make_util_map_o +run += make_util_pmu_bison_o +run += make_install +run += make_install_bin +run += make_install_prefix +run += make_install_prefix_slash +# FIXME 'install-*' commented out till they're fixed +# run += make_install_doc +# run += make_install_man +# run += make_install_html +# run += make_install_info +# run += make_install_pdf +run += make_minimal +run += make_static + +ifneq ($(call has,ctags),) +run += make_tags +endif +ifneq ($(call has,cscope),) +run += make_cscope +endif + +# $(run_O) contains same portion of $(run) tests with '_O' attached +# to distinguish O=... tests +run_O := $(addsuffix _O,$(run)) + +# disable some tests for O=... +run_O := $(filter-out make_python_perf_so_O,$(run_O)) + +# define test for each compile as 'test_NAME' variable +# with the test itself as a value +test_make_tags = test -f tags +test_make_cscope = test -f cscope.out + +test_make_tags_O := $(test_make_tags) +test_make_cscope_O := $(test_make_cscope) + +test_ok := true +test_make_help := $(test_ok) +test_make_doc := $(test_ok) +test_make_help_O := $(test_ok) +test_make_doc_O := $(test_ok) + +test_make_python_perf_so := test -f $(PERF_O)/python/perf.so + +test_make_perf_o := test -f $(PERF_O)/perf.o +test_make_util_map_o := test -f $(PERF_O)/util/map.o +test_make_util_pmu_bison_o := test -f $(PERF_O)/util/pmu-bison.o + +define test_dest_files + for file in $(1); do \ + if [ ! -x $$TMP_DEST/$$file ]; then \ + echo " failed to find: $$file"; \ + fi \ + done +endef + +installed_files_bin := bin/perf +installed_files_bin += etc/bash_completion.d/perf +installed_files_bin += libexec/perf-core/perf-archive + +installed_files_plugins := $(lib)/traceevent/plugins/plugin_cfg80211.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_scsi.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_xen.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_function.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_sched_switch.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_mac80211.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_kvm.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_kmem.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_hrtimer.so +installed_files_plugins += $(lib)/traceevent/plugins/plugin_jbd2.so + +installed_files_all := $(installed_files_bin) +installed_files_all += $(installed_files_plugins) + +test_make_install := $(call test_dest_files,$(installed_files_all)) +test_make_install_O := $(call test_dest_files,$(installed_files_all)) +test_make_install_bin := $(call test_dest_files,$(installed_files_bin)) +test_make_install_bin_O := $(call test_dest_files,$(installed_files_bin)) + +# We prefix all installed files for make_install_prefix(_slash) +# with '/tmp/krava' to match installed/prefix-ed files. +installed_files_all_prefix := $(addprefix /tmp/krava/,$(installed_files_all)) +test_make_install_prefix := $(call test_dest_files,$(installed_files_all_prefix)) +test_make_install_prefix_O := $(call test_dest_files,$(installed_files_all_prefix)) + +test_make_install_prefix_slash := $(test_make_install_prefix) +test_make_install_prefix_slash_O := $(test_make_install_prefix_O) + +# FIXME nothing gets installed +test_make_install_man := test -f $$TMP_DEST/share/man/man1/perf.1 +test_make_install_man_O := $(test_make_install_man) + +# FIXME nothing gets installed +test_make_install_doc := $(test_ok) +test_make_install_doc_O := $(test_ok) + +# FIXME nothing gets installed +test_make_install_html := $(test_ok) +test_make_install_html_O := $(test_ok) + +# FIXME nothing gets installed +test_make_install_info := $(test_ok) +test_make_install_info_O := $(test_ok) + +# FIXME nothing gets installed +test_make_install_pdf := $(test_ok) +test_make_install_pdf_O := $(test_ok) + +test_make_python_perf_so_O := test -f $$TMP_O/python/perf.so +test_make_perf_o_O := test -f $$TMP_O/perf.o +test_make_util_map_o_O := test -f $$TMP_O/util/map.o +test_make_util_pmu_bison_o_O := test -f $$TMP_O/util/pmu-bison.o + +test_default = test -x $(PERF_O)/perf +test = $(if $(test_$1),$(test_$1),$(test_default)) + +test_default_O = test -x $$TMP_O/perf +test_O = $(if $(test_$1),$(test_$1),$(test_default_O)) + +all: + +ifdef SHUF +run := $(shell shuf -e $(run)) +run_O := $(shell shuf -e $(run_O)) +endif + +max_width := $(shell echo $(run_O) | sed 's/ /\n/g' | wc -L) + +ifdef DEBUG +d := $(info run $(run)) +d := $(info run_O $(run_O)) +endif + +MAKEFLAGS := --no-print-directory + +clean := @(cd $(PERF); $(MAKE_F) -s $(O_OPT) clean >/dev/null && $(MAKE) -s $(O_OPT) -C ../build clean >/dev/null) + +$(run): + $(call clean) + @TMP_DEST=$$(mktemp -d); \ + cmd="cd $(PERF) && $(MAKE_F) $($@) $(PARALLEL_OPT) $(O_OPT) DESTDIR=$$TMP_DEST"; \ + printf "%*.*s: %s\n" $(max_width) $(max_width) "$@" "$$cmd" && echo $$cmd > $@ && \ + ( eval $$cmd ) >> $@ 2>&1; \ + echo " test: $(call test,$@)" >> $@ 2>&1; \ + $(call test,$@) && \ + rm -rf $@ $$TMP_DEST || (cat $@ ; false) + +$(run_O): + $(call clean) + @TMP_O=$$(mktemp -d); \ + TMP_DEST=$$(mktemp -d); \ + cmd="cd $(PERF) && $(MAKE_F) $($(patsubst %_O,%,$@)) $(PARALLEL_OPT) O=$$TMP_O DESTDIR=$$TMP_DEST"; \ + printf "%*.*s: %s\n" $(max_width) $(max_width) "$@" "$$cmd" && echo $$cmd > $@ && \ + ( eval $$cmd ) >> $@ 2>&1 && \ + echo " test: $(call test_O,$@)" >> $@ 2>&1; \ + $(call test_O,$@) && \ + rm -rf $@ $$TMP_O $$TMP_DEST || (cat $@ ; false) + +tarpkg: + @cmd="$(PERF)/tests/perf-targz-src-pkg $(PERF)"; \ + echo "- $@: $$cmd" && echo $$cmd > $@ && \ + ( eval $$cmd ) >> $@ 2>&1 && \ + rm -f $@ + +KERNEL_O := ../.. +ifneq ($(O),) + KERNEL_O := $(O) +endif + +make_kernelsrc: + @echo "- make -C <kernelsrc> $(PARALLEL_OPT) $(K_O_OPT) tools/perf" + $(call clean); \ + (make -C ../.. $(PARALLEL_OPT) $(K_O_OPT) tools/perf) > $@ 2>&1 && \ + test -x $(KERNEL_O)/tools/perf/perf && rm -f $@ || (cat $@ ; false) + +make_kernelsrc_tools: + @echo "- make -C <kernelsrc>/tools $(PARALLEL_OPT) $(K_O_OPT) perf" + $(call clean); \ + (make -C ../../tools $(PARALLEL_OPT) $(K_O_OPT) perf) > $@ 2>&1 && \ + test -x $(KERNEL_O)/tools/perf/perf && rm -f $@ || (cat $@ ; false) + +make_libperf: + @echo "- make -C lib"; + make -C lib clean >$@ 2>&1; make -C lib >>$@ 2>&1 && rm $@ + +FEATURES_DUMP_FILE := $(FULL_O)/BUILD_TEST_FEATURE_DUMP +FEATURES_DUMP_FILE_STATIC := $(FULL_O)/BUILD_TEST_FEATURE_DUMP_STATIC + +all: $(run) $(run_O) tarpkg make_kernelsrc make_kernelsrc_tools + @echo OK + @rm -f $(FEATURES_DUMP_FILE) $(FEATURES_DUMP_FILE_STATIC) + +out: $(run_O) + @echo OK + @rm -f $(FEATURES_DUMP_FILE) $(FEATURES_DUMP_FILE_STATIC) + +ifeq ($(REUSE_FEATURES_DUMP),1) +$(FEATURES_DUMP_FILE): + $(call clean) + @cmd="cd $(PERF) && make FEATURE_DUMP_COPY=$@ $(O_OPT) feature-dump"; \ + echo "- $@: $$cmd" && echo $$cmd && \ + ( eval $$cmd ) > /dev/null 2>&1 + +$(FEATURES_DUMP_FILE_STATIC): + $(call clean) + @cmd="cd $(PERF) && make FEATURE_DUMP_COPY=$@ $(O_OPT) LDFLAGS='-static' feature-dump"; \ + echo "- $@: $$cmd" && echo $$cmd && \ + ( eval $$cmd ) > /dev/null 2>&1 + +# Add feature dump dependency for run/run_O targets +$(foreach t,$(run) $(run_O),$(eval \ + $(t): $(if $(findstring make_static,$(t)),\ + $(FEATURES_DUMP_FILE_STATIC),\ + $(FEATURES_DUMP_FILE)))) + +# Append 'FEATURES_DUMP=' option to all test cases. For example: +# make_no_libbpf: NO_LIBBPF=1 --> NO_LIBBPF=1 FEATURES_DUMP=/a/b/BUILD_TEST_FEATURE_DUMP +# make_static: LDFLAGS=-static --> LDFLAGS=-static FEATURES_DUMP=/a/b/BUILD_TEST_FEATURE_DUMP_STATIC +$(foreach t,$(run),$(if $(findstring make_static,$(t)),\ + $(eval $(t) := $($(t)) FEATURES_DUMP=$(FEATURES_DUMP_FILE_STATIC)),\ + $(eval $(t) := $($(t)) FEATURES_DUMP=$(FEATURES_DUMP_FILE)))) +endif + +.PHONY: all $(run) $(run_O) tarpkg clean make_kernelsrc make_kernelsrc_tools make_libperf +endif # ifndef MK diff --git a/tools/perf/tests/maps.c b/tools/perf/tests/maps.c new file mode 100644 index 000000000..1ac72919f --- /dev/null +++ b/tools/perf/tests/maps.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/kernel.h> +#include "tests.h" +#include "map.h" +#include "maps.h" +#include "dso.h" +#include "debug.h" + +struct map_def { + const char *name; + u64 start; + u64 end; +}; + +static int check_maps(struct map_def *merged, unsigned int size, struct maps *maps) +{ + struct map *map; + unsigned int i = 0; + + maps__for_each_entry(maps, map) { + if (i > 0) + TEST_ASSERT_VAL("less maps expected", (map && i < size) || (!map && i == size)); + + TEST_ASSERT_VAL("wrong map start", map->start == merged[i].start); + TEST_ASSERT_VAL("wrong map end", map->end == merged[i].end); + TEST_ASSERT_VAL("wrong map name", !strcmp(map->dso->name, merged[i].name)); + TEST_ASSERT_VAL("wrong map refcnt", refcount_read(&map->refcnt) == 1); + + i++; + } + + return TEST_OK; +} + +int test__maps__merge_in(struct test *t __maybe_unused, int subtest __maybe_unused) +{ + struct maps maps; + unsigned int i; + struct map_def bpf_progs[] = { + { "bpf_prog_1", 200, 300 }, + { "bpf_prog_2", 500, 600 }, + { "bpf_prog_3", 800, 900 }, + }; + struct map_def merged12[] = { + { "kcore1", 100, 200 }, + { "bpf_prog_1", 200, 300 }, + { "kcore1", 300, 500 }, + { "bpf_prog_2", 500, 600 }, + { "kcore1", 600, 800 }, + { "bpf_prog_3", 800, 900 }, + { "kcore1", 900, 1000 }, + }; + struct map_def merged3[] = { + { "kcore1", 100, 200 }, + { "bpf_prog_1", 200, 300 }, + { "kcore1", 300, 500 }, + { "bpf_prog_2", 500, 600 }, + { "kcore1", 600, 800 }, + { "bpf_prog_3", 800, 900 }, + { "kcore1", 900, 1000 }, + { "kcore3", 1000, 1100 }, + }; + struct map *map_kcore1, *map_kcore2, *map_kcore3; + int ret; + + maps__init(&maps, NULL); + + for (i = 0; i < ARRAY_SIZE(bpf_progs); i++) { + struct map *map; + + map = dso__new_map(bpf_progs[i].name); + TEST_ASSERT_VAL("failed to create map", map); + + map->start = bpf_progs[i].start; + map->end = bpf_progs[i].end; + maps__insert(&maps, map); + map__put(map); + } + + map_kcore1 = dso__new_map("kcore1"); + TEST_ASSERT_VAL("failed to create map", map_kcore1); + + map_kcore2 = dso__new_map("kcore2"); + TEST_ASSERT_VAL("failed to create map", map_kcore2); + + map_kcore3 = dso__new_map("kcore3"); + TEST_ASSERT_VAL("failed to create map", map_kcore3); + + /* kcore1 map overlaps over all bpf maps */ + map_kcore1->start = 100; + map_kcore1->end = 1000; + + /* kcore2 map hides behind bpf_prog_2 */ + map_kcore2->start = 550; + map_kcore2->end = 570; + + /* kcore3 map hides behind bpf_prog_3, kcore1 and adds new map */ + map_kcore3->start = 880; + map_kcore3->end = 1100; + + ret = maps__merge_in(&maps, map_kcore1); + TEST_ASSERT_VAL("failed to merge map", !ret); + + ret = check_maps(merged12, ARRAY_SIZE(merged12), &maps); + TEST_ASSERT_VAL("merge check failed", !ret); + + ret = maps__merge_in(&maps, map_kcore2); + TEST_ASSERT_VAL("failed to merge map", !ret); + + ret = check_maps(merged12, ARRAY_SIZE(merged12), &maps); + TEST_ASSERT_VAL("merge check failed", !ret); + + ret = maps__merge_in(&maps, map_kcore3); + TEST_ASSERT_VAL("failed to merge map", !ret); + + ret = check_maps(merged3, ARRAY_SIZE(merged3), &maps); + TEST_ASSERT_VAL("merge check failed", !ret); + + maps__exit(&maps); + return TEST_OK; +} diff --git a/tools/perf/tests/mem.c b/tools/perf/tests/mem.c new file mode 100644 index 000000000..673a11a6c --- /dev/null +++ b/tools/perf/tests/mem.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "util/map_symbol.h" +#include "util/mem-events.h" +#include "util/symbol.h" +#include "linux/perf_event.h" +#include "util/debug.h" +#include "tests.h" +#include <string.h> + +static int check(union perf_mem_data_src data_src, + const char *string) +{ + char out[100]; + char failure[100]; + struct mem_info mi = { .data_src = data_src }; + + int n; + + n = perf_mem__snp_scnprintf(out, sizeof out, &mi); + n += perf_mem__lvl_scnprintf(out + n, sizeof out - n, &mi); + scnprintf(failure, sizeof failure, "unexpected %s", out); + TEST_ASSERT_VAL(failure, !strcmp(string, out)); + return 0; +} + +int test__mem(struct test *text __maybe_unused, int subtest __maybe_unused) +{ + int ret = 0; + union perf_mem_data_src src; + + memset(&src, 0, sizeof(src)); + + src.mem_lvl = PERF_MEM_LVL_HIT; + src.mem_lvl_num = 4; + + ret |= check(src, "N/AL4 hit"); + + src.mem_remote = 1; + + ret |= check(src, "N/ARemote L4 hit"); + + src.mem_lvl = PERF_MEM_LVL_MISS; + src.mem_lvl_num = PERF_MEM_LVLNUM_PMEM; + src.mem_remote = 0; + + ret |= check(src, "N/APMEM miss"); + + src.mem_remote = 1; + + ret |= check(src, "N/ARemote PMEM miss"); + + src.mem_snoopx = PERF_MEM_SNOOPX_FWD; + src.mem_lvl_num = PERF_MEM_LVLNUM_RAM; + + ret |= check(src , "FwdRemote RAM miss"); + + return ret; +} diff --git a/tools/perf/tests/mem2node.c b/tools/perf/tests/mem2node.c new file mode 100644 index 000000000..a258bd51f --- /dev/null +++ b/tools/perf/tests/mem2node.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/bitmap.h> +#include <linux/kernel.h> +#include <linux/zalloc.h> +#include <perf/cpumap.h> +#include <internal/cpumap.h> +#include "debug.h" +#include "env.h" +#include "mem2node.h" +#include "tests.h" + +static struct node { + int node; + const char *map; +} test_nodes[] = { + { .node = 0, .map = "0" }, + { .node = 1, .map = "1-2" }, + { .node = 3, .map = "5-7,9" }, +}; + +#define T TEST_ASSERT_VAL + +static unsigned long *get_bitmap(const char *str, int nbits) +{ + struct perf_cpu_map *map = perf_cpu_map__new(str); + unsigned long *bm = NULL; + int i; + + bm = bitmap_alloc(nbits); + + if (map && bm) { + for (i = 0; i < map->nr; i++) { + set_bit(map->map[i], bm); + } + } + + if (map) + perf_cpu_map__put(map); + else + free(bm); + + return bm && map ? bm : NULL; +} + +int test__mem2node(struct test *t __maybe_unused, int subtest __maybe_unused) +{ + struct mem2node map; + struct memory_node nodes[3]; + struct perf_env env = { + .memory_nodes = (struct memory_node *) &nodes[0], + .nr_memory_nodes = ARRAY_SIZE(nodes), + .memory_bsize = 0x100, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(nodes); i++) { + nodes[i].node = test_nodes[i].node; + nodes[i].size = 10; + + T("failed: alloc bitmap", + (nodes[i].set = get_bitmap(test_nodes[i].map, 10))); + } + + T("failed: mem2node__init", !mem2node__init(&map, &env)); + T("failed: mem2node__node", 0 == mem2node__node(&map, 0x50)); + T("failed: mem2node__node", 1 == mem2node__node(&map, 0x100)); + T("failed: mem2node__node", 1 == mem2node__node(&map, 0x250)); + T("failed: mem2node__node", 3 == mem2node__node(&map, 0x500)); + T("failed: mem2node__node", 3 == mem2node__node(&map, 0x650)); + T("failed: mem2node__node", -1 == mem2node__node(&map, 0x450)); + T("failed: mem2node__node", -1 == mem2node__node(&map, 0x1050)); + + for (i = 0; i < ARRAY_SIZE(nodes); i++) + zfree(&nodes[i].set); + + mem2node__exit(&map); + return 0; +} diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c new file mode 100644 index 000000000..7b0dbfc0e --- /dev/null +++ b/tools/perf/tests/mmap-basic.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <inttypes.h> +/* For the CLR_() macros */ +#include <pthread.h> +#include <stdlib.h> +#include <perf/cpumap.h> + +#include "debug.h" +#include "evlist.h" +#include "evsel.h" +#include "thread_map.h" +#include "tests.h" +#include "util/mmap.h" +#include <linux/err.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <perf/evlist.h> +#include <perf/mmap.h> + +/* + * This test will generate random numbers of calls to some getpid syscalls, + * then establish an mmap for a group of events that are created to monitor + * the syscalls. + * + * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated + * sample.id field to map back to its respective perf_evsel instance. + * + * Then it checks if the number of syscalls reported as perf events by + * the kernel corresponds to the number of syscalls made. + */ +int test__basic_mmap(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = -1; + union perf_event *event; + struct perf_thread_map *threads; + struct perf_cpu_map *cpus; + struct evlist *evlist; + cpu_set_t cpu_set; + const char *syscall_names[] = { "getsid", "getppid", "getpgid", }; + pid_t (*syscalls[])(void) = { (void *)getsid, getppid, (void*)getpgid }; +#define nsyscalls ARRAY_SIZE(syscall_names) + unsigned int nr_events[nsyscalls], + expected_nr_events[nsyscalls], i, j; + struct evsel *evsels[nsyscalls], *evsel; + char sbuf[STRERR_BUFSIZE]; + struct mmap *md; + + threads = thread_map__new(-1, getpid(), UINT_MAX); + if (threads == NULL) { + pr_debug("thread_map__new\n"); + return -1; + } + + cpus = perf_cpu_map__new(NULL); + if (cpus == NULL) { + pr_debug("perf_cpu_map__new\n"); + goto out_free_threads; + } + + CPU_ZERO(&cpu_set); + CPU_SET(cpus->map[0], &cpu_set); + sched_setaffinity(0, sizeof(cpu_set), &cpu_set); + if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { + pr_debug("sched_setaffinity() failed on CPU %d: %s ", + cpus->map[0], str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_free_cpus; + } + + evlist = evlist__new(); + if (evlist == NULL) { + pr_debug("perf_evlist__new\n"); + goto out_free_cpus; + } + + perf_evlist__set_maps(&evlist->core, cpus, threads); + + for (i = 0; i < nsyscalls; ++i) { + char name[64]; + + snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); + evsels[i] = evsel__newtp("syscalls", name); + if (IS_ERR(evsels[i])) { + pr_debug("evsel__new(%s)\n", name); + goto out_delete_evlist; + } + + evsels[i]->core.attr.wakeup_events = 1; + evsel__set_sample_id(evsels[i], false); + + evlist__add(evlist, evsels[i]); + + if (evsel__open(evsels[i], cpus, threads) < 0) { + pr_debug("failed to open counter: %s, " + "tweak /proc/sys/kernel/perf_event_paranoid?\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + nr_events[i] = 0; + expected_nr_events[i] = 1 + rand() % 127; + } + + if (evlist__mmap(evlist, 128) < 0) { + pr_debug("failed to mmap events: %d (%s)\n", errno, + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + for (i = 0; i < nsyscalls; ++i) + for (j = 0; j < expected_nr_events[i]; ++j) { + int foo = syscalls[i](); + ++foo; + } + + md = &evlist->mmap[0]; + if (perf_mmap__read_init(&md->core) < 0) + goto out_init; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + struct perf_sample sample; + + if (event->header.type != PERF_RECORD_SAMPLE) { + pr_debug("unexpected %s event\n", + perf_event__name(event->header.type)); + goto out_delete_evlist; + } + + err = perf_evlist__parse_sample(evlist, event, &sample); + if (err) { + pr_err("Can't parse sample, err = %d\n", err); + goto out_delete_evlist; + } + + err = -1; + evsel = perf_evlist__id2evsel(evlist, sample.id); + if (evsel == NULL) { + pr_debug("event with id %" PRIu64 + " doesn't map to an evsel\n", sample.id); + goto out_delete_evlist; + } + nr_events[evsel->idx]++; + perf_mmap__consume(&md->core); + } + perf_mmap__read_done(&md->core); + +out_init: + err = 0; + evlist__for_each_entry(evlist, evsel) { + if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { + pr_debug("expected %d %s events, got %d\n", + expected_nr_events[evsel->idx], + evsel__name(evsel), nr_events[evsel->idx]); + err = -1; + goto out_delete_evlist; + } + } + +out_delete_evlist: + evlist__delete(evlist); + cpus = NULL; + threads = NULL; +out_free_cpus: + perf_cpu_map__put(cpus); +out_free_threads: + perf_thread_map__put(threads); + return err; +} diff --git a/tools/perf/tests/mmap-thread-lookup.c b/tools/perf/tests/mmap-thread-lookup.c new file mode 100644 index 000000000..8d9d4cbff --- /dev/null +++ b/tools/perf/tests/mmap-thread-lookup.c @@ -0,0 +1,238 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <inttypes.h> +#include <unistd.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/mman.h> +#include <pthread.h> +#include <stdlib.h> +#include <stdio.h> +#include "debug.h" +#include "event.h" +#include "tests.h" +#include "machine.h" +#include "thread_map.h" +#include "map.h" +#include "symbol.h" +#include "util/synthetic-events.h" +#include "thread.h" +#include <internal/lib.h> // page_size + +#define THREADS 4 + +static int go_away; + +struct thread_data { + pthread_t pt; + pid_t tid; + void *map; + int ready[2]; +}; + +static struct thread_data threads[THREADS]; + +static int thread_init(struct thread_data *td) +{ + void *map; + + map = mmap(NULL, page_size, + PROT_READ|PROT_WRITE|PROT_EXEC, + MAP_SHARED|MAP_ANONYMOUS, -1, 0); + + if (map == MAP_FAILED) { + perror("mmap failed"); + return -1; + } + + td->map = map; + td->tid = syscall(SYS_gettid); + + pr_debug("tid = %d, map = %p\n", td->tid, map); + return 0; +} + +static void *thread_fn(void *arg) +{ + struct thread_data *td = arg; + ssize_t ret; + int go = 0; + + if (thread_init(td)) + return NULL; + + /* Signal thread_create thread is initialized. */ + ret = write(td->ready[1], &go, sizeof(int)); + if (ret != sizeof(int)) { + pr_err("failed to notify\n"); + return NULL; + } + + while (!go_away) { + /* Waiting for main thread to kill us. */ + usleep(100); + } + + munmap(td->map, page_size); + return NULL; +} + +static int thread_create(int i) +{ + struct thread_data *td = &threads[i]; + int err, go; + + if (pipe(td->ready)) + return -1; + + err = pthread_create(&td->pt, NULL, thread_fn, td); + if (!err) { + /* Wait for thread initialization. */ + ssize_t ret = read(td->ready[0], &go, sizeof(int)); + err = ret != sizeof(int); + } + + close(td->ready[0]); + close(td->ready[1]); + return err; +} + +static int threads_create(void) +{ + struct thread_data *td0 = &threads[0]; + int i, err = 0; + + go_away = 0; + + /* 0 is main thread */ + if (thread_init(td0)) + return -1; + + for (i = 1; !err && i < THREADS; i++) + err = thread_create(i); + + return err; +} + +static int threads_destroy(void) +{ + struct thread_data *td0 = &threads[0]; + int i, err = 0; + + /* cleanup the main thread */ + munmap(td0->map, page_size); + + go_away = 1; + + for (i = 1; !err && i < THREADS; i++) + err = pthread_join(threads[i].pt, NULL); + + return err; +} + +typedef int (*synth_cb)(struct machine *machine); + +static int synth_all(struct machine *machine) +{ + return perf_event__synthesize_threads(NULL, + perf_event__process, + machine, 0, 1); +} + +static int synth_process(struct machine *machine) +{ + struct perf_thread_map *map; + int err; + + map = thread_map__new_by_pid(getpid()); + + err = perf_event__synthesize_thread_map(NULL, map, + perf_event__process, + machine, 0); + + perf_thread_map__put(map); + return err; +} + +static int mmap_events(synth_cb synth) +{ + struct machine *machine; + int err, i; + + /* + * The threads_create will not return before all threads + * are spawned and all created memory map. + * + * They will loop until threads_destroy is called, so we + * can safely run synthesizing function. + */ + TEST_ASSERT_VAL("failed to create threads", !threads_create()); + + machine = machine__new_host(); + + dump_trace = verbose > 1 ? 1 : 0; + + err = synth(machine); + + dump_trace = 0; + + TEST_ASSERT_VAL("failed to destroy threads", !threads_destroy()); + TEST_ASSERT_VAL("failed to synthesize maps", !err); + + /* + * All data is synthesized, try to find map for each + * thread object. + */ + for (i = 0; i < THREADS; i++) { + struct thread_data *td = &threads[i]; + struct addr_location al; + struct thread *thread; + + thread = machine__findnew_thread(machine, getpid(), td->tid); + + pr_debug("looking for map %p\n", td->map); + + thread__find_map(thread, PERF_RECORD_MISC_USER, + (unsigned long) (td->map + 1), &al); + + thread__put(thread); + + if (!al.map) { + pr_debug("failed, couldn't find map\n"); + err = -1; + break; + } + + pr_debug("map %p, addr %" PRIx64 "\n", al.map, al.map->start); + } + + machine__delete_threads(machine); + machine__delete(machine); + return err; +} + +/* + * This test creates 'THREADS' number of threads (including + * main thread) and each thread creates memory map. + * + * When threads are created, we synthesize them with both + * (separate tests): + * perf_event__synthesize_thread_map (process based) + * perf_event__synthesize_threads (global) + * + * We test we can find all memory maps via: + * thread__find_map + * + * by using all thread objects. + */ +int test__mmap_thread_lookup(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + /* perf_event__synthesize_threads synthesize */ + TEST_ASSERT_VAL("failed with sythesizing all", + !mmap_events(synth_all)); + + /* perf_event__synthesize_thread_map synthesize */ + TEST_ASSERT_VAL("failed with sythesizing process", + !mmap_events(synth_process)); + + return 0; +} diff --git a/tools/perf/tests/openat-syscall-all-cpus.c b/tools/perf/tests/openat-syscall-all-cpus.c new file mode 100644 index 000000000..71f85e2cc --- /dev/null +++ b/tools/perf/tests/openat-syscall-all-cpus.c @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <inttypes.h> +/* For the CPU_* macros */ +#include <pthread.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <api/fs/fs.h> +#include <linux/err.h> +#include <linux/string.h> +#include <api/fs/tracing_path.h> +#include "evsel.h" +#include "tests.h" +#include "thread_map.h" +#include <perf/cpumap.h> +#include <internal/cpumap.h> +#include "debug.h" +#include "stat.h" +#include "util/counts.h" + +int test__openat_syscall_event_on_all_cpus(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = -1, fd, cpu; + struct perf_cpu_map *cpus; + struct evsel *evsel; + unsigned int nr_openat_calls = 111, i; + cpu_set_t cpu_set; + struct perf_thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX); + char sbuf[STRERR_BUFSIZE]; + char errbuf[BUFSIZ]; + + if (threads == NULL) { + pr_debug("thread_map__new\n"); + return -1; + } + + cpus = perf_cpu_map__new(NULL); + if (cpus == NULL) { + pr_debug("perf_cpu_map__new\n"); + goto out_thread_map_delete; + } + + CPU_ZERO(&cpu_set); + + evsel = evsel__newtp("syscalls", "sys_enter_openat"); + if (IS_ERR(evsel)) { + tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "syscalls", "sys_enter_openat"); + pr_debug("%s\n", errbuf); + goto out_cpu_map_delete; + } + + if (evsel__open(evsel, cpus, threads) < 0) { + pr_debug("failed to open counter: %s, " + "tweak /proc/sys/kernel/perf_event_paranoid?\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_evsel_delete; + } + + for (cpu = 0; cpu < cpus->nr; ++cpu) { + unsigned int ncalls = nr_openat_calls + cpu; + /* + * XXX eventually lift this restriction in a way that + * keeps perf building on older glibc installations + * without CPU_ALLOC. 1024 cpus in 2010 still seems + * a reasonable upper limit tho :-) + */ + if (cpus->map[cpu] >= CPU_SETSIZE) { + pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); + continue; + } + + CPU_SET(cpus->map[cpu], &cpu_set); + if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { + pr_debug("sched_setaffinity() failed on CPU %d: %s ", + cpus->map[cpu], + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_close_fd; + } + for (i = 0; i < ncalls; ++i) { + fd = openat(0, "/etc/passwd", O_RDONLY); + close(fd); + } + CPU_CLR(cpus->map[cpu], &cpu_set); + } + + /* + * Here we need to explicitly preallocate the counts, as if + * we use the auto allocation it will allocate just for 1 cpu, + * as we start by cpu 0. + */ + if (evsel__alloc_counts(evsel, cpus->nr, 1) < 0) { + pr_debug("evsel__alloc_counts(ncpus=%d)\n", cpus->nr); + goto out_close_fd; + } + + err = 0; + + for (cpu = 0; cpu < cpus->nr; ++cpu) { + unsigned int expected; + + if (cpus->map[cpu] >= CPU_SETSIZE) + continue; + + if (evsel__read_on_cpu(evsel, cpu, 0) < 0) { + pr_debug("evsel__read_on_cpu\n"); + err = -1; + break; + } + + expected = nr_openat_calls + cpu; + if (perf_counts(evsel->counts, cpu, 0)->val != expected) { + pr_debug("evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %" PRIu64 "\n", + expected, cpus->map[cpu], perf_counts(evsel->counts, cpu, 0)->val); + err = -1; + } + } + + evsel__free_counts(evsel); +out_close_fd: + perf_evsel__close_fd(&evsel->core); +out_evsel_delete: + evsel__delete(evsel); +out_cpu_map_delete: + perf_cpu_map__put(cpus); +out_thread_map_delete: + perf_thread_map__put(threads); + return err; +} diff --git a/tools/perf/tests/openat-syscall-tp-fields.c b/tools/perf/tests/openat-syscall-tp-fields.c new file mode 100644 index 000000000..1f5f5e79a --- /dev/null +++ b/tools/perf/tests/openat-syscall-tp-fields.c @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdbool.h> +#include <linux/err.h> +#include <linux/string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include "evlist.h" +#include "evsel.h" +#include "thread_map.h" +#include "record.h" +#include "tests.h" +#include "debug.h" +#include "util/mmap.h" +#include <errno.h> +#include <perf/mmap.h> + +#ifndef O_DIRECTORY +#define O_DIRECTORY 00200000 +#endif +#ifndef AT_FDCWD +#define AT_FDCWD -100 +#endif + +int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct record_opts opts = { + .target = { + .uid = UINT_MAX, + .uses_mmap = true, + }, + .no_buffering = true, + .freq = 1, + .mmap_pages = 256, + .raw_samples = true, + }; + const char *filename = "/etc/passwd"; + int flags = O_RDONLY | O_DIRECTORY; + struct evlist *evlist = evlist__new(); + struct evsel *evsel; + int err = -1, i, nr_events = 0, nr_polls = 0; + char sbuf[STRERR_BUFSIZE]; + + if (evlist == NULL) { + pr_debug("%s: perf_evlist__new\n", __func__); + goto out; + } + + evsel = evsel__newtp("syscalls", "sys_enter_openat"); + if (IS_ERR(evsel)) { + pr_debug("%s: evsel__newtp\n", __func__); + goto out_delete_evlist; + } + + evlist__add(evlist, evsel); + + err = perf_evlist__create_maps(evlist, &opts.target); + if (err < 0) { + pr_debug("%s: perf_evlist__create_maps\n", __func__); + goto out_delete_evlist; + } + + evsel__config(evsel, &opts, NULL); + + perf_thread_map__set_pid(evlist->core.threads, 0, getpid()); + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + err = evlist__mmap(evlist, UINT_MAX); + if (err < 0) { + pr_debug("evlist__mmap: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + evlist__enable(evlist); + + /* + * Generate the event: + */ + openat(AT_FDCWD, filename, flags); + + while (1) { + int before = nr_events; + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + union perf_event *event; + struct mmap *md; + + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + const u32 type = event->header.type; + int tp_flags; + struct perf_sample sample; + + ++nr_events; + + if (type != PERF_RECORD_SAMPLE) { + perf_mmap__consume(&md->core); + continue; + } + + err = evsel__parse_sample(evsel, event, &sample); + if (err) { + pr_debug("Can't parse sample, err = %d\n", err); + goto out_delete_evlist; + } + + tp_flags = evsel__intval(evsel, &sample, "flags"); + + if (flags != tp_flags) { + pr_debug("%s: Expected flags=%#x, got %#x\n", + __func__, flags, tp_flags); + goto out_delete_evlist; + } + + goto out_ok; + } + perf_mmap__read_done(&md->core); + } + + if (nr_events == before) + evlist__poll(evlist, 10); + + if (++nr_polls > 5) { + pr_debug("%s: no events!\n", __func__); + goto out_delete_evlist; + } + } +out_ok: + err = 0; +out_delete_evlist: + evlist__delete(evlist); +out: + return err; +} diff --git a/tools/perf/tests/openat-syscall.c b/tools/perf/tests/openat-syscall.c new file mode 100644 index 000000000..85a8f0fe7 --- /dev/null +++ b/tools/perf/tests/openat-syscall.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <inttypes.h> +#include <api/fs/tracing_path.h> +#include <linux/err.h> +#include <linux/string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include "thread_map.h" +#include "evsel.h" +#include "debug.h" +#include "tests.h" +#include "util/counts.h" + +int test__openat_syscall_event(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = -1, fd; + struct evsel *evsel; + unsigned int nr_openat_calls = 111, i; + struct perf_thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX); + char sbuf[STRERR_BUFSIZE]; + char errbuf[BUFSIZ]; + + if (threads == NULL) { + pr_debug("thread_map__new\n"); + return -1; + } + + evsel = evsel__newtp("syscalls", "sys_enter_openat"); + if (IS_ERR(evsel)) { + tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "syscalls", "sys_enter_openat"); + pr_debug("%s\n", errbuf); + goto out_thread_map_delete; + } + + if (evsel__open_per_thread(evsel, threads) < 0) { + pr_debug("failed to open counter: %s, " + "tweak /proc/sys/kernel/perf_event_paranoid?\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_evsel_delete; + } + + for (i = 0; i < nr_openat_calls; ++i) { + fd = openat(0, "/etc/passwd", O_RDONLY); + close(fd); + } + + if (evsel__read_on_cpu(evsel, 0, 0) < 0) { + pr_debug("evsel__read_on_cpu\n"); + goto out_close_fd; + } + + if (perf_counts(evsel->counts, 0, 0)->val != nr_openat_calls) { + pr_debug("evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n", + nr_openat_calls, perf_counts(evsel->counts, 0, 0)->val); + goto out_close_fd; + } + + err = 0; +out_close_fd: + perf_evsel__close_fd(&evsel->core); +out_evsel_delete: + evsel__delete(evsel); +out_thread_map_delete: + perf_thread_map__put(threads); + return err; +} diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c new file mode 100644 index 000000000..611512f22 --- /dev/null +++ b/tools/perf/tests/parse-events.c @@ -0,0 +1,2056 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "parse-events.h" +#include "evsel.h" +#include "evlist.h" +#include <api/fs/fs.h> +#include "tests.h" +#include "debug.h" +#include "pmu.h" +#include <dirent.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <linux/kernel.h> +#include <linux/hw_breakpoint.h> +#include <api/fs/tracing_path.h> + +#define PERF_TP_SAMPLE_TYPE (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | \ + PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD) + +#if defined(__s390x__) +/* Return true if kvm module is available and loaded. Test this + * and retun success when trace point kvm_s390_create_vm + * exists. Otherwise this test always fails. + */ +static bool kvm_s390_create_vm_valid(void) +{ + char *eventfile; + bool rc = false; + + eventfile = get_events_file("kvm-s390"); + + if (eventfile) { + DIR *mydir = opendir(eventfile); + + if (mydir) { + rc = true; + closedir(mydir); + } + put_events_file(eventfile); + } + + return rc; +} +#endif + +static int test__checkevent_tracepoint(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 0 == evlist->nr_groups); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_TRACEPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong sample_type", + PERF_TP_SAMPLE_TYPE == evsel->core.attr.sample_type); + TEST_ASSERT_VAL("wrong sample_period", 1 == evsel->core.attr.sample_period); + return 0; +} + +static int test__checkevent_tracepoint_multi(struct evlist *evlist) +{ + struct evsel *evsel; + + TEST_ASSERT_VAL("wrong number of entries", evlist->core.nr_entries > 1); + TEST_ASSERT_VAL("wrong number of groups", 0 == evlist->nr_groups); + + evlist__for_each_entry(evlist, evsel) { + TEST_ASSERT_VAL("wrong type", + PERF_TYPE_TRACEPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong sample_type", + PERF_TP_SAMPLE_TYPE == evsel->core.attr.sample_type); + TEST_ASSERT_VAL("wrong sample_period", + 1 == evsel->core.attr.sample_period); + } + return 0; +} + +static int test__checkevent_raw(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0x1a == evsel->core.attr.config); + return 0; +} + +static int test__checkevent_numeric(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", 1 == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 1 == evsel->core.attr.config); + return 0; +} + +static int test__checkevent_symbolic_name(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + return 0; +} + +static int test__checkevent_symbolic_name_config(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + /* + * The period value gets configured within perf_evlist__config, + * while this test executes only parse events method. + */ + TEST_ASSERT_VAL("wrong period", + 0 == evsel->core.attr.sample_period); + TEST_ASSERT_VAL("wrong config1", + 0 == evsel->core.attr.config1); + TEST_ASSERT_VAL("wrong config2", + 1 == evsel->core.attr.config2); + return 0; +} + +static int test__checkevent_symbolic_alias(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_SOFTWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_SW_PAGE_FAULTS == evsel->core.attr.config); + return 0; +} + +static int test__checkevent_genhw(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HW_CACHE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", (1 << 16) == evsel->core.attr.config); + return 0; +} + +static int test__checkevent_breakpoint(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", (HW_BREAKPOINT_R | HW_BREAKPOINT_W) == + evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_4 == + evsel->core.attr.bp_len); + return 0; +} + +static int test__checkevent_breakpoint_x(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", + HW_BREAKPOINT_X == evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", sizeof(long) == evsel->core.attr.bp_len); + return 0; +} + +static int test__checkevent_breakpoint_r(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", + PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", + HW_BREAKPOINT_R == evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", + HW_BREAKPOINT_LEN_4 == evsel->core.attr.bp_len); + return 0; +} + +static int test__checkevent_breakpoint_w(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", + PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", + HW_BREAKPOINT_W == evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", + HW_BREAKPOINT_LEN_4 == evsel->core.attr.bp_len); + return 0; +} + +static int test__checkevent_breakpoint_rw(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", + PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", + (HW_BREAKPOINT_R|HW_BREAKPOINT_W) == evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", + HW_BREAKPOINT_LEN_4 == evsel->core.attr.bp_len); + return 0; +} + +static int test__checkevent_tracepoint_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + return test__checkevent_tracepoint(evlist); +} + +static int +test__checkevent_tracepoint_multi_modifier(struct evlist *evlist) +{ + struct evsel *evsel; + + TEST_ASSERT_VAL("wrong number of entries", evlist->core.nr_entries > 1); + + evlist__for_each_entry(evlist, evsel) { + TEST_ASSERT_VAL("wrong exclude_user", + !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", + evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + } + + return test__checkevent_tracepoint_multi(evlist); +} + +static int test__checkevent_raw_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + + return test__checkevent_raw(evlist); +} + +static int test__checkevent_numeric_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + + return test__checkevent_numeric(evlist); +} + +static int test__checkevent_symbolic_name_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__checkevent_exclude_host_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__checkevent_exclude_guest_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__checkevent_symbolic_alias_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + return test__checkevent_symbolic_alias(evlist); +} + +static int test__checkevent_genhw_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + + return test__checkevent_genhw(evlist); +} + +static int test__checkevent_exclude_idle_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude idle", evsel->core.attr.exclude_idle); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__checkevent_exclude_idle_modifier_1(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude idle", evsel->core.attr.exclude_idle); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__checkevent_breakpoint_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong name", + !strcmp(evsel__name(evsel), "mem:0:u")); + + return test__checkevent_breakpoint(evlist); +} + +static int test__checkevent_breakpoint_x_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong name", + !strcmp(evsel__name(evsel), "mem:0:x:k")); + + return test__checkevent_breakpoint_x(evlist); +} + +static int test__checkevent_breakpoint_r_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong name", + !strcmp(evsel__name(evsel), "mem:0:r:hp")); + + return test__checkevent_breakpoint_r(evlist); +} + +static int test__checkevent_breakpoint_w_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong name", + !strcmp(evsel__name(evsel), "mem:0:w:up")); + + return test__checkevent_breakpoint_w(evlist); +} + +static int test__checkevent_breakpoint_rw_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong name", + !strcmp(evsel__name(evsel), "mem:0:rw:kp")); + + return test__checkevent_breakpoint_rw(evlist); +} + +static int test__checkevent_pmu(struct evlist *evlist) +{ + + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 10 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong config1", 1 == evsel->core.attr.config1); + TEST_ASSERT_VAL("wrong config2", 3 == evsel->core.attr.config2); + /* + * The period value gets configured within perf_evlist__config, + * while this test executes only parse events method. + */ + TEST_ASSERT_VAL("wrong period", 0 == evsel->core.attr.sample_period); + + return 0; +} + +static int test__checkevent_list(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 3 == evlist->core.nr_entries); + + /* r1 */ + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 1 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong config1", 0 == evsel->core.attr.config1); + TEST_ASSERT_VAL("wrong config2", 0 == evsel->core.attr.config2); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + /* syscalls:sys_enter_openat:k */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_TRACEPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong sample_type", + PERF_TP_SAMPLE_TYPE == evsel->core.attr.sample_type); + TEST_ASSERT_VAL("wrong sample_period", 1 == evsel->core.attr.sample_period); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + /* 1:1:hp */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", 1 == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 1 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + + return 0; +} + +static int test__checkevent_pmu_name(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + /* cpu/config=1,name=krava/u */ + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 1 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong name", !strcmp(evsel__name(evsel), "krava")); + + /* cpu/config=2/u" */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 2 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong name", + !strcmp(evsel__name(evsel), "cpu/config=2/u")); + + return 0; +} + +static int test__checkevent_pmu_partial_time_callgraph(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + /* cpu/config=1,call-graph=fp,time,period=100000/ */ + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 1 == evsel->core.attr.config); + /* + * The period, time and callgraph value gets configured + * within perf_evlist__config, + * while this test executes only parse events method. + */ + TEST_ASSERT_VAL("wrong period", 0 == evsel->core.attr.sample_period); + TEST_ASSERT_VAL("wrong callgraph", !evsel__has_callchain(evsel)); + TEST_ASSERT_VAL("wrong time", !(PERF_SAMPLE_TIME & evsel->core.attr.sample_type)); + + /* cpu/config=2,call-graph=no,time=0,period=2000/ */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 2 == evsel->core.attr.config); + /* + * The period, time and callgraph value gets configured + * within perf_evlist__config, + * while this test executes only parse events method. + */ + TEST_ASSERT_VAL("wrong period", 0 == evsel->core.attr.sample_period); + TEST_ASSERT_VAL("wrong callgraph", !evsel__has_callchain(evsel)); + TEST_ASSERT_VAL("wrong time", !(PERF_SAMPLE_TIME & evsel->core.attr.sample_type)); + + return 0; +} + +static int test__checkevent_pmu_events(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong exclude_user", + !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", + evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong pinned", !evsel->core.attr.pinned); + TEST_ASSERT_VAL("wrong exclusive", !evsel->core.attr.exclusive); + + return 0; +} + + +static int test__checkevent_pmu_events_mix(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + /* pmu-event:u */ + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong exclude_user", + !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", + evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong pinned", !evsel->core.attr.pinned); + TEST_ASSERT_VAL("wrong exclusive", !evsel->core.attr.exclusive); + + /* cpu/pmu-event/u*/ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong exclude_user", + !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", + evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong pinned", !evsel->core.attr.pinned); + TEST_ASSERT_VAL("wrong exclusive", !evsel->core.attr.pinned); + + return 0; +} + +static int test__checkterms_simple(struct list_head *terms) +{ + struct parse_events_term *term; + + /* config=10 */ + term = list_entry(terms->next, struct parse_events_term, list); + TEST_ASSERT_VAL("wrong type term", + term->type_term == PARSE_EVENTS__TERM_TYPE_CONFIG); + TEST_ASSERT_VAL("wrong type val", + term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + TEST_ASSERT_VAL("wrong val", term->val.num == 10); + TEST_ASSERT_VAL("wrong config", !term->config); + + /* config1 */ + term = list_entry(term->list.next, struct parse_events_term, list); + TEST_ASSERT_VAL("wrong type term", + term->type_term == PARSE_EVENTS__TERM_TYPE_CONFIG1); + TEST_ASSERT_VAL("wrong type val", + term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + TEST_ASSERT_VAL("wrong val", term->val.num == 1); + TEST_ASSERT_VAL("wrong config", !term->config); + + /* config2=3 */ + term = list_entry(term->list.next, struct parse_events_term, list); + TEST_ASSERT_VAL("wrong type term", + term->type_term == PARSE_EVENTS__TERM_TYPE_CONFIG2); + TEST_ASSERT_VAL("wrong type val", + term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + TEST_ASSERT_VAL("wrong val", term->val.num == 3); + TEST_ASSERT_VAL("wrong config", !term->config); + + /* umask=1*/ + term = list_entry(term->list.next, struct parse_events_term, list); + TEST_ASSERT_VAL("wrong type term", + term->type_term == PARSE_EVENTS__TERM_TYPE_USER); + TEST_ASSERT_VAL("wrong type val", + term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + TEST_ASSERT_VAL("wrong val", term->val.num == 1); + TEST_ASSERT_VAL("wrong config", !strcmp(term->config, "umask")); + + /* + * read + * + * The perf_pmu__test_parse_init injects 'read' term into + * perf_pmu_events_list, so 'read' is evaluated as read term + * and not as raw event with 'ead' hex value. + */ + term = list_entry(term->list.next, struct parse_events_term, list); + TEST_ASSERT_VAL("wrong type term", + term->type_term == PARSE_EVENTS__TERM_TYPE_USER); + TEST_ASSERT_VAL("wrong type val", + term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + TEST_ASSERT_VAL("wrong val", term->val.num == 1); + TEST_ASSERT_VAL("wrong config", !strcmp(term->config, "read")); + + /* + * r0xead + * + * To be still able to pass 'ead' value with 'r' syntax, + * we added support to parse 'r0xHEX' event. + */ + term = list_entry(term->list.next, struct parse_events_term, list); + TEST_ASSERT_VAL("wrong type term", + term->type_term == PARSE_EVENTS__TERM_TYPE_CONFIG); + TEST_ASSERT_VAL("wrong type val", + term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + TEST_ASSERT_VAL("wrong val", term->val.num == 0xead); + TEST_ASSERT_VAL("wrong config", !term->config); + return 0; +} + +static int test__group1(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* instructions:k */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* cycles:upp */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + /* use of precise requires exclude_guest */ + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 2); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + return 0; +} + +static int test__group2(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 3 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* faults + :ku modifier */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_SOFTWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_SW_PAGE_FAULTS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* cache-references + :u modifier */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_REFERENCES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* cycles:k */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + return 0; +} + +static int test__group3(struct evlist *evlist __maybe_unused) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 5 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 2 == evlist->nr_groups); + + /* group1 syscalls:sys_enter_openat:H */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_TRACEPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong sample_type", + PERF_TP_SAMPLE_TYPE == evsel->core.attr.sample_type); + TEST_ASSERT_VAL("wrong sample_period", 1 == evsel->core.attr.sample_period); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong group name", + !strcmp(leader->group_name, "group1")); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* group1 cycles:kppp */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + /* use of precise requires exclude_guest */ + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 3); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* group2 cycles + G modifier */ + evsel = leader = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong group name", + !strcmp(leader->group_name, "group2")); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* group2 1:3 + G modifier */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", 1 == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 3 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* instructions:u */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + return 0; +} + +static int test__group4(struct evlist *evlist __maybe_unused) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* cycles:u + p */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + /* use of precise requires exclude_guest */ + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 1); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* instructions:kp + p */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + /* use of precise requires exclude_guest */ + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 2); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + return 0; +} + +static int test__group5(struct evlist *evlist __maybe_unused) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 5 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 2 == evlist->nr_groups); + + /* cycles + G */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* instructions + G */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* cycles:G */ + evsel = leader = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + TEST_ASSERT_VAL("wrong sample_read", !evsel->sample_read); + + /* instructions:G */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + + /* cycles */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + + return 0; +} + +static int test__group_gh1(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* cycles + :H group modifier */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + + /* cache-misses:G + :H group modifier */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + + return 0; +} + +static int test__group_gh2(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* cycles + :G group modifier */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + + /* cache-misses:H + :G group modifier */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + + return 0; +} + +static int test__group_gh3(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* cycles:G + :u group modifier */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + + /* cache-misses:H + :u group modifier */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + + return 0; +} + +static int test__group_gh4(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong number of groups", 1 == evlist->nr_groups); + + /* cycles:G + :uG group modifier */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); + TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0); + + /* cache-misses:H + :uG group modifier */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1); + + return 0; +} + +static int test__leader_sample1(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 3 == evlist->core.nr_entries); + + /* cycles - sampling group leader */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong sample_read", evsel->sample_read); + + /* cache-misses - not sampling */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong sample_read", evsel->sample_read); + + /* branch-misses - not sampling */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_BRANCH_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong sample_read", evsel->sample_read); + + return 0; +} + +static int test__leader_sample2(struct evlist *evlist __maybe_unused) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + + /* instructions - sampling group leader */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_INSTRUCTIONS == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong sample_read", evsel->sample_read); + + /* branch-misses - not sampling */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_BRANCH_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong sample_read", evsel->sample_read); + + return 0; +} + +static int test__checkevent_pinned_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong pinned", evsel->core.attr.pinned); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__pinned_group(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 3 == evlist->core.nr_entries); + + /* cycles - group leader */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong pinned", evsel->core.attr.pinned); + + /* cache-misses - can not be pinned, but will go on with the leader */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong pinned", !evsel->core.attr.pinned); + + /* branch-misses - ditto */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_BRANCH_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong pinned", !evsel->core.attr.pinned); + + return 0; +} + +static int test__checkevent_exclusive_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip); + TEST_ASSERT_VAL("wrong exclusive", evsel->core.attr.exclusive); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__exclusive_group(struct evlist *evlist) +{ + struct evsel *evsel, *leader; + + TEST_ASSERT_VAL("wrong number of entries", 3 == evlist->core.nr_entries); + + /* cycles - group leader */ + evsel = leader = evlist__first(evlist); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CPU_CYCLES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong group name", !evsel->group_name); + TEST_ASSERT_VAL("wrong leader", evsel->leader == leader); + TEST_ASSERT_VAL("wrong exclusive", evsel->core.attr.exclusive); + + /* cache-misses - can not be pinned, but will go on with the leader */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_HARDWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_CACHE_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclusive", !evsel->core.attr.exclusive); + + /* branch-misses - ditto */ + evsel = evsel__next(evsel); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_HW_BRANCH_MISSES == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong exclusive", !evsel->core.attr.exclusive); + + return 0; +} +static int test__checkevent_breakpoint_len(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", (HW_BREAKPOINT_R | HW_BREAKPOINT_W) == + evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_1 == + evsel->core.attr.bp_len); + + return 0; +} + +static int test__checkevent_breakpoint_len_w(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->core.attr.config); + TEST_ASSERT_VAL("wrong bp_type", HW_BREAKPOINT_W == + evsel->core.attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_2 == + evsel->core.attr.bp_len); + + return 0; +} + +static int +test__checkevent_breakpoint_len_rw_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); + + return test__checkevent_breakpoint_rw(evlist); +} + +static int test__checkevent_precise_max_modifier(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_SOFTWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", + PERF_COUNT_SW_TASK_CLOCK == evsel->core.attr.config); + return 0; +} + +static int test__checkevent_config_symbol(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "insn") == 0); + return 0; +} + +static int test__checkevent_config_raw(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "rawpmu") == 0); + return 0; +} + +static int test__checkevent_config_num(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "numpmu") == 0); + return 0; +} + +static int test__checkevent_config_cache(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "cachepmu") == 0); + return 0; +} + +static bool test__intel_pt_valid(void) +{ + return !!perf_pmu__find("intel_pt"); +} + +static int test__intel_pt(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "intel_pt//u") == 0); + return 0; +} + +static int test__checkevent_complex_name(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong complex name parsing", strcmp(evsel->name, "COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks") == 0); + return 0; +} + +static int test__checkevent_raw_pmu(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_SOFTWARE == evsel->core.attr.type); + TEST_ASSERT_VAL("wrong config", 0x1a == evsel->core.attr.config); + return 0; +} + +static int test__sym_event_slash(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong type", evsel->core.attr.type == PERF_TYPE_HARDWARE); + TEST_ASSERT_VAL("wrong config", evsel->core.attr.config == PERF_COUNT_HW_CPU_CYCLES); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); + return 0; +} + +static int test__sym_event_dc(struct evlist *evlist) +{ + struct evsel *evsel = evlist__first(evlist); + + TEST_ASSERT_VAL("wrong type", evsel->core.attr.type == PERF_TYPE_HARDWARE); + TEST_ASSERT_VAL("wrong config", evsel->core.attr.config == PERF_COUNT_HW_CPU_CYCLES); + TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); + return 0; +} + +static int count_tracepoints(void) +{ + struct dirent *events_ent; + DIR *events_dir; + int cnt = 0; + + events_dir = tracing_events__opendir(); + + TEST_ASSERT_VAL("Can't open events dir", events_dir); + + while ((events_ent = readdir(events_dir))) { + char *sys_path; + struct dirent *sys_ent; + DIR *sys_dir; + + if (!strcmp(events_ent->d_name, ".") + || !strcmp(events_ent->d_name, "..") + || !strcmp(events_ent->d_name, "enable") + || !strcmp(events_ent->d_name, "header_event") + || !strcmp(events_ent->d_name, "header_page")) + continue; + + sys_path = get_events_file(events_ent->d_name); + TEST_ASSERT_VAL("Can't get sys path", sys_path); + + sys_dir = opendir(sys_path); + TEST_ASSERT_VAL("Can't open sys dir", sys_dir); + + while ((sys_ent = readdir(sys_dir))) { + if (!strcmp(sys_ent->d_name, ".") + || !strcmp(sys_ent->d_name, "..") + || !strcmp(sys_ent->d_name, "enable") + || !strcmp(sys_ent->d_name, "filter")) + continue; + + cnt++; + } + + closedir(sys_dir); + put_events_file(sys_path); + } + + closedir(events_dir); + return cnt; +} + +static int test__all_tracepoints(struct evlist *evlist) +{ + TEST_ASSERT_VAL("wrong events count", + count_tracepoints() == evlist->core.nr_entries); + + return test__checkevent_tracepoint_multi(evlist); +} + +struct evlist_test { + const char *name; + __u32 type; + const int id; + bool (*valid)(void); + int (*check)(struct evlist *evlist); +}; + +static struct evlist_test test__events[] = { + { + .name = "syscalls:sys_enter_openat", + .check = test__checkevent_tracepoint, + .id = 0, + }, + { + .name = "syscalls:*", + .check = test__checkevent_tracepoint_multi, + .id = 1, + }, + { + .name = "r1a", + .check = test__checkevent_raw, + .id = 2, + }, + { + .name = "1:1", + .check = test__checkevent_numeric, + .id = 3, + }, + { + .name = "instructions", + .check = test__checkevent_symbolic_name, + .id = 4, + }, + { + .name = "cycles/period=100000,config2/", + .check = test__checkevent_symbolic_name_config, + .id = 5, + }, + { + .name = "faults", + .check = test__checkevent_symbolic_alias, + .id = 6, + }, + { + .name = "L1-dcache-load-miss", + .check = test__checkevent_genhw, + .id = 7, + }, + { + .name = "mem:0", + .check = test__checkevent_breakpoint, + .id = 8, + }, + { + .name = "mem:0:x", + .check = test__checkevent_breakpoint_x, + .id = 9, + }, + { + .name = "mem:0:r", + .check = test__checkevent_breakpoint_r, + .id = 10, + }, + { + .name = "mem:0:w", + .check = test__checkevent_breakpoint_w, + .id = 11, + }, + { + .name = "syscalls:sys_enter_openat:k", + .check = test__checkevent_tracepoint_modifier, + .id = 12, + }, + { + .name = "syscalls:*:u", + .check = test__checkevent_tracepoint_multi_modifier, + .id = 13, + }, + { + .name = "r1a:kp", + .check = test__checkevent_raw_modifier, + .id = 14, + }, + { + .name = "1:1:hp", + .check = test__checkevent_numeric_modifier, + .id = 15, + }, + { + .name = "instructions:h", + .check = test__checkevent_symbolic_name_modifier, + .id = 16, + }, + { + .name = "faults:u", + .check = test__checkevent_symbolic_alias_modifier, + .id = 17, + }, + { + .name = "L1-dcache-load-miss:kp", + .check = test__checkevent_genhw_modifier, + .id = 18, + }, + { + .name = "mem:0:u", + .check = test__checkevent_breakpoint_modifier, + .id = 19, + }, + { + .name = "mem:0:x:k", + .check = test__checkevent_breakpoint_x_modifier, + .id = 20, + }, + { + .name = "mem:0:r:hp", + .check = test__checkevent_breakpoint_r_modifier, + .id = 21, + }, + { + .name = "mem:0:w:up", + .check = test__checkevent_breakpoint_w_modifier, + .id = 22, + }, + { + .name = "r1,syscalls:sys_enter_openat:k,1:1:hp", + .check = test__checkevent_list, + .id = 23, + }, + { + .name = "instructions:G", + .check = test__checkevent_exclude_host_modifier, + .id = 24, + }, + { + .name = "instructions:H", + .check = test__checkevent_exclude_guest_modifier, + .id = 25, + }, + { + .name = "mem:0:rw", + .check = test__checkevent_breakpoint_rw, + .id = 26, + }, + { + .name = "mem:0:rw:kp", + .check = test__checkevent_breakpoint_rw_modifier, + .id = 27, + }, + { + .name = "{instructions:k,cycles:upp}", + .check = test__group1, + .id = 28, + }, + { + .name = "{faults:k,cache-references}:u,cycles:k", + .check = test__group2, + .id = 29, + }, + { + .name = "group1{syscalls:sys_enter_openat:H,cycles:kppp},group2{cycles,1:3}:G,instructions:u", + .check = test__group3, + .id = 30, + }, + { + .name = "{cycles:u,instructions:kp}:p", + .check = test__group4, + .id = 31, + }, + { + .name = "{cycles,instructions}:G,{cycles:G,instructions:G},cycles", + .check = test__group5, + .id = 32, + }, + { + .name = "*:*", + .check = test__all_tracepoints, + .id = 33, + }, + { + .name = "{cycles,cache-misses:G}:H", + .check = test__group_gh1, + .id = 34, + }, + { + .name = "{cycles,cache-misses:H}:G", + .check = test__group_gh2, + .id = 35, + }, + { + .name = "{cycles:G,cache-misses:H}:u", + .check = test__group_gh3, + .id = 36, + }, + { + .name = "{cycles:G,cache-misses:H}:uG", + .check = test__group_gh4, + .id = 37, + }, + { + .name = "{cycles,cache-misses,branch-misses}:S", + .check = test__leader_sample1, + .id = 38, + }, + { + .name = "{instructions,branch-misses}:Su", + .check = test__leader_sample2, + .id = 39, + }, + { + .name = "instructions:uDp", + .check = test__checkevent_pinned_modifier, + .id = 40, + }, + { + .name = "{cycles,cache-misses,branch-misses}:D", + .check = test__pinned_group, + .id = 41, + }, + { + .name = "mem:0/1", + .check = test__checkevent_breakpoint_len, + .id = 42, + }, + { + .name = "mem:0/2:w", + .check = test__checkevent_breakpoint_len_w, + .id = 43, + }, + { + .name = "mem:0/4:rw:u", + .check = test__checkevent_breakpoint_len_rw_modifier, + .id = 44 + }, +#if defined(__s390x__) + { + .name = "kvm-s390:kvm_s390_create_vm", + .check = test__checkevent_tracepoint, + .valid = kvm_s390_create_vm_valid, + .id = 100, + }, +#endif + { + .name = "instructions:I", + .check = test__checkevent_exclude_idle_modifier, + .id = 45, + }, + { + .name = "instructions:kIG", + .check = test__checkevent_exclude_idle_modifier_1, + .id = 46, + }, + { + .name = "task-clock:P,cycles", + .check = test__checkevent_precise_max_modifier, + .id = 47, + }, + { + .name = "instructions/name=insn/", + .check = test__checkevent_config_symbol, + .id = 48, + }, + { + .name = "r1234/name=rawpmu/", + .check = test__checkevent_config_raw, + .id = 49, + }, + { + .name = "4:0x6530160/name=numpmu/", + .check = test__checkevent_config_num, + .id = 50, + }, + { + .name = "L1-dcache-misses/name=cachepmu/", + .check = test__checkevent_config_cache, + .id = 51, + }, + { + .name = "intel_pt//u", + .valid = test__intel_pt_valid, + .check = test__intel_pt, + .id = 52, + }, + { + .name = "cycles/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks'/Duk", + .check = test__checkevent_complex_name, + .id = 53 + }, + { + .name = "cycles//u", + .check = test__sym_event_slash, + .id = 54, + }, + { + .name = "cycles:k", + .check = test__sym_event_dc, + .id = 55, + }, + { + .name = "instructions:uep", + .check = test__checkevent_exclusive_modifier, + .id = 56, + }, + { + .name = "{cycles,cache-misses,branch-misses}:e", + .check = test__exclusive_group, + .id = 57, + }, +}; + +static struct evlist_test test__events_pmu[] = { + { + .name = "cpu/config=10,config1,config2=3,period=1000/u", + .check = test__checkevent_pmu, + .id = 0, + }, + { + .name = "cpu/config=1,name=krava/u,cpu/config=2/u", + .check = test__checkevent_pmu_name, + .id = 1, + }, + { + .name = "cpu/config=1,call-graph=fp,time,period=100000/,cpu/config=2,call-graph=no,time=0,period=2000/", + .check = test__checkevent_pmu_partial_time_callgraph, + .id = 2, + }, + { + .name = "cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2/ukp", + .check = test__checkevent_complex_name, + .id = 3, + }, + { + .name = "software/r1a/", + .check = test__checkevent_raw_pmu, + .id = 4, + }, + { + .name = "software/r0x1a/", + .check = test__checkevent_raw_pmu, + .id = 4, + }, +}; + +struct terms_test { + const char *str; + __u32 type; + int (*check)(struct list_head *terms); +}; + +static struct terms_test test__terms[] = { + [0] = { + .str = "config=10,config1,config2=3,umask=1,read,r0xead", + .check = test__checkterms_simple, + }, +}; + +static int test_event(struct evlist_test *e) +{ + struct parse_events_error err; + struct evlist *evlist; + int ret; + + bzero(&err, sizeof(err)); + if (e->valid && !e->valid()) { + pr_debug("... SKIP"); + return 0; + } + + evlist = evlist__new(); + if (evlist == NULL) + return -ENOMEM; + + ret = parse_events(evlist, e->name, &err); + if (ret) { + pr_debug("failed to parse event '%s', err %d, str '%s'\n", + e->name, ret, err.str); + parse_events_print_error(&err, e->name); + } else { + ret = e->check(evlist); + } + + evlist__delete(evlist); + + return ret; +} + +static int test_events(struct evlist_test *events, unsigned cnt) +{ + int ret1, ret2 = 0; + unsigned i; + + for (i = 0; i < cnt; i++) { + struct evlist_test *e = &events[i]; + + pr_debug("running test %d '%s'", e->id, e->name); + ret1 = test_event(e); + if (ret1) + ret2 = ret1; + pr_debug("\n"); + } + + return ret2; +} + +static int test_term(struct terms_test *t) +{ + struct list_head terms; + int ret; + + INIT_LIST_HEAD(&terms); + + /* + * The perf_pmu__test_parse_init prepares perf_pmu_events_list + * which gets freed in parse_events_terms. + */ + if (perf_pmu__test_parse_init()) + return -1; + + ret = parse_events_terms(&terms, t->str); + if (ret) { + pr_debug("failed to parse terms '%s', err %d\n", + t->str , ret); + return ret; + } + + ret = t->check(&terms); + parse_events_terms__purge(&terms); + + return ret; +} + +static int test_terms(struct terms_test *terms, unsigned cnt) +{ + int ret = 0; + unsigned i; + + for (i = 0; i < cnt; i++) { + struct terms_test *t = &terms[i]; + + pr_debug("running test %d '%s'\n", i, t->str); + ret = test_term(t); + if (ret) + break; + } + + return ret; +} + +static int test_pmu(void) +{ + struct stat st; + char path[PATH_MAX]; + int ret; + + snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/format/", + sysfs__mountpoint()); + + ret = stat(path, &st); + if (ret) + pr_debug("omitting PMU cpu tests\n"); + return !ret; +} + +static int test_pmu_events(void) +{ + struct stat st; + char path[PATH_MAX]; + struct dirent *ent; + DIR *dir; + int ret; + + snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/events/", + sysfs__mountpoint()); + + ret = stat(path, &st); + if (ret) { + pr_debug("omitting PMU cpu events tests\n"); + return 0; + } + + dir = opendir(path); + if (!dir) { + pr_debug("can't open pmu event dir"); + return -1; + } + + while (!ret && (ent = readdir(dir))) { + struct evlist_test e = { .id = 0, }; + char name[2 * NAME_MAX + 1 + 12 + 3]; + + /* Names containing . are special and cannot be used directly */ + if (strchr(ent->d_name, '.')) + continue; + + snprintf(name, sizeof(name), "cpu/event=%s/u", ent->d_name); + + e.name = name; + e.check = test__checkevent_pmu_events; + + ret = test_event(&e); + if (ret) + break; + snprintf(name, sizeof(name), "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name); + e.name = name; + e.check = test__checkevent_pmu_events_mix; + ret = test_event(&e); + } + + closedir(dir); + return ret; +} + +int test__parse_events(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int ret1, ret2 = 0; + +#define TEST_EVENTS(tests) \ +do { \ + ret1 = test_events(tests, ARRAY_SIZE(tests)); \ + if (!ret2) \ + ret2 = ret1; \ +} while (0) + + TEST_EVENTS(test__events); + + if (test_pmu()) + TEST_EVENTS(test__events_pmu); + + if (test_pmu()) { + int ret = test_pmu_events(); + if (ret) + return ret; + } + + ret1 = test_terms(test__terms, ARRAY_SIZE(test__terms)); + if (!ret2) + ret2 = ret1; + + return ret2; +} diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c new file mode 100644 index 000000000..7c1bde01c --- /dev/null +++ b/tools/perf/tests/parse-metric.c @@ -0,0 +1,357 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <string.h> +#include <perf/cpumap.h> +#include <perf/evlist.h> +#include "metricgroup.h" +#include "tests.h" +#include "pmu-events/pmu-events.h" +#include "evlist.h" +#include "rblist.h" +#include "debug.h" +#include "expr.h" +#include "stat.h" + +static struct pmu_event pme_test[] = { +{ + .metric_expr = "inst_retired.any / cpu_clk_unhalted.thread", + .metric_name = "IPC", + .metric_group = "group1", +}, +{ + .metric_expr = "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * " + "( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))", + .metric_name = "Frontend_Bound_SMT", +}, +{ + .metric_expr = "l1d\\-loads\\-misses / inst_retired.any", + .metric_name = "dcache_miss_cpi", +}, +{ + .metric_expr = "l1i\\-loads\\-misses / inst_retired.any", + .metric_name = "icache_miss_cycles", +}, +{ + .metric_expr = "(dcache_miss_cpi + icache_miss_cycles)", + .metric_name = "cache_miss_cycles", + .metric_group = "group1", +}, +{ + .metric_expr = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit", + .metric_name = "DCache_L2_All_Hits", +}, +{ + .metric_expr = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + " + "l2_rqsts.pf_miss + l2_rqsts.rfo_miss", + .metric_name = "DCache_L2_All_Miss", +}, +{ + .metric_expr = "dcache_l2_all_hits + dcache_l2_all_miss", + .metric_name = "DCache_L2_All", +}, +{ + .metric_expr = "d_ratio(dcache_l2_all_hits, dcache_l2_all)", + .metric_name = "DCache_L2_Hits", +}, +{ + .metric_expr = "d_ratio(dcache_l2_all_miss, dcache_l2_all)", + .metric_name = "DCache_L2_Misses", +}, +{ + .metric_expr = "ipc + m2", + .metric_name = "M1", +}, +{ + .metric_expr = "ipc + m1", + .metric_name = "M2", +}, +{ + .metric_expr = "1/m3", + .metric_name = "M3", +}, +{ + .name = NULL, +} +}; + +static struct pmu_events_map map = { + .cpuid = "test", + .version = "1", + .type = "core", + .table = pme_test, +}; + +struct value { + const char *event; + u64 val; +}; + +static u64 find_value(const char *name, struct value *values) +{ + struct value *v = values; + + while (v->event) { + if (!strcmp(name, v->event)) + return v->val; + v++; + }; + return 0; +} + +static void load_runtime_stat(struct runtime_stat *st, struct evlist *evlist, + struct value *vals) +{ + struct evsel *evsel; + u64 count; + + evlist__for_each_entry(evlist, evsel) { + count = find_value(evsel->name, vals); + perf_stat__update_shadow_stats(evsel, count, 0, st); + } +} + +static double compute_single(struct rblist *metric_events, struct evlist *evlist, + struct runtime_stat *st, const char *name) +{ + struct metric_expr *mexp; + struct metric_event *me; + struct evsel *evsel; + + evlist__for_each_entry(evlist, evsel) { + me = metricgroup__lookup(metric_events, evsel, false); + if (me != NULL) { + list_for_each_entry (mexp, &me->head, nd) { + if (strcmp(mexp->metric_name, name)) + continue; + return test_generic_metric(mexp, 0, st); + } + } + } + return 0.; +} + +static int __compute_metric(const char *name, struct value *vals, + const char *name1, double *ratio1, + const char *name2, double *ratio2) +{ + struct rblist metric_events = { + .nr_entries = 0, + }; + struct perf_cpu_map *cpus; + struct runtime_stat st; + struct evlist *evlist; + int err; + + /* + * We need to prepare evlist for stat mode running on CPU 0 + * because that's where all the stats are going to be created. + */ + evlist = evlist__new(); + if (!evlist) + return -ENOMEM; + + cpus = perf_cpu_map__new("0"); + if (!cpus) { + evlist__delete(evlist); + return -ENOMEM; + } + + perf_evlist__set_maps(&evlist->core, cpus, NULL); + runtime_stat__init(&st); + + /* Parse the metric into metric_events list. */ + err = metricgroup__parse_groups_test(evlist, &map, name, + false, false, + &metric_events); + if (err) + goto out; + + err = perf_evlist__alloc_stats(evlist, false); + if (err) + goto out; + + /* Load the runtime stats with given numbers for events. */ + load_runtime_stat(&st, evlist, vals); + + /* And execute the metric */ + if (name1 && ratio1) + *ratio1 = compute_single(&metric_events, evlist, &st, name1); + if (name2 && ratio2) + *ratio2 = compute_single(&metric_events, evlist, &st, name2); + +out: + /* ... clenup. */ + metricgroup__rblist_exit(&metric_events); + runtime_stat__exit(&st); + perf_evlist__free_stats(evlist); + perf_cpu_map__put(cpus); + evlist__delete(evlist); + return err; +} + +static int compute_metric(const char *name, struct value *vals, double *ratio) +{ + return __compute_metric(name, vals, name, ratio, NULL, NULL); +} + +static int compute_metric_group(const char *name, struct value *vals, + const char *name1, double *ratio1, + const char *name2, double *ratio2) +{ + return __compute_metric(name, vals, name1, ratio1, name2, ratio2); +} + +static int test_ipc(void) +{ + double ratio; + struct value vals[] = { + { .event = "inst_retired.any", .val = 300 }, + { .event = "cpu_clk_unhalted.thread", .val = 200 }, + { .event = NULL, }, + }; + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("IPC", vals, &ratio) == 0); + + TEST_ASSERT_VAL("IPC failed, wrong ratio", + ratio == 1.5); + return 0; +} + +static int test_frontend(void) +{ + double ratio; + struct value vals[] = { + { .event = "idq_uops_not_delivered.core", .val = 300 }, + { .event = "cpu_clk_unhalted.thread", .val = 200 }, + { .event = "cpu_clk_unhalted.one_thread_active", .val = 400 }, + { .event = "cpu_clk_unhalted.ref_xclk", .val = 600 }, + { .event = NULL, }, + }; + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("Frontend_Bound_SMT", vals, &ratio) == 0); + + TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio", + ratio == 0.45); + return 0; +} + +static int test_cache_miss_cycles(void) +{ + double ratio; + struct value vals[] = { + { .event = "l1d-loads-misses", .val = 300 }, + { .event = "l1i-loads-misses", .val = 200 }, + { .event = "inst_retired.any", .val = 400 }, + { .event = NULL, }, + }; + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("cache_miss_cycles", vals, &ratio) == 0); + + TEST_ASSERT_VAL("cache_miss_cycles failed, wrong ratio", + ratio == 1.25); + return 0; +} + + +/* + * DCache_L2_All_Hits = l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hi + * DCache_L2_All_Miss = max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + + * l2_rqsts.pf_miss + l2_rqsts.rfo_miss + * DCache_L2_All = dcache_l2_all_hits + dcache_l2_all_miss + * DCache_L2_Hits = d_ratio(dcache_l2_all_hits, dcache_l2_all) + * DCache_L2_Misses = d_ratio(dcache_l2_all_miss, dcache_l2_all) + * + * l2_rqsts.demand_data_rd_hit = 100 + * l2_rqsts.pf_hit = 200 + * l2_rqsts.rfo_hi = 300 + * l2_rqsts.all_demand_data_rd = 400 + * l2_rqsts.pf_miss = 500 + * l2_rqsts.rfo_miss = 600 + * + * DCache_L2_All_Hits = 600 + * DCache_L2_All_Miss = MAX(400 - 100, 0) + 500 + 600 = 1400 + * DCache_L2_All = 600 + 1400 = 2000 + * DCache_L2_Hits = 600 / 2000 = 0.3 + * DCache_L2_Misses = 1400 / 2000 = 0.7 + */ +static int test_dcache_l2(void) +{ + double ratio; + struct value vals[] = { + { .event = "l2_rqsts.demand_data_rd_hit", .val = 100 }, + { .event = "l2_rqsts.pf_hit", .val = 200 }, + { .event = "l2_rqsts.rfo_hit", .val = 300 }, + { .event = "l2_rqsts.all_demand_data_rd", .val = 400 }, + { .event = "l2_rqsts.pf_miss", .val = 500 }, + { .event = "l2_rqsts.rfo_miss", .val = 600 }, + { .event = NULL, }, + }; + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("DCache_L2_Hits", vals, &ratio) == 0); + + TEST_ASSERT_VAL("DCache_L2_Hits failed, wrong ratio", + ratio == 0.3); + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("DCache_L2_Misses", vals, &ratio) == 0); + + TEST_ASSERT_VAL("DCache_L2_Misses failed, wrong ratio", + ratio == 0.7); + return 0; +} + +static int test_recursion_fail(void) +{ + double ratio; + struct value vals[] = { + { .event = "inst_retired.any", .val = 300 }, + { .event = "cpu_clk_unhalted.thread", .val = 200 }, + { .event = NULL, }, + }; + + TEST_ASSERT_VAL("failed to find recursion", + compute_metric("M1", vals, &ratio) == -1); + + TEST_ASSERT_VAL("failed to find recursion", + compute_metric("M3", vals, &ratio) == -1); + return 0; +} + +static int test_metric_group(void) +{ + double ratio1, ratio2; + struct value vals[] = { + { .event = "cpu_clk_unhalted.thread", .val = 200 }, + { .event = "l1d-loads-misses", .val = 300 }, + { .event = "l1i-loads-misses", .val = 200 }, + { .event = "inst_retired.any", .val = 400 }, + { .event = NULL, }, + }; + + TEST_ASSERT_VAL("failed to find recursion", + compute_metric_group("group1", vals, + "IPC", &ratio1, + "cache_miss_cycles", &ratio2) == 0); + + TEST_ASSERT_VAL("group IPC failed, wrong ratio", + ratio1 == 2.0); + + TEST_ASSERT_VAL("group cache_miss_cycles failed, wrong ratio", + ratio2 == 1.25); + return 0; +} + +int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + TEST_ASSERT_VAL("IPC failed", test_ipc() == 0); + TEST_ASSERT_VAL("frontend failed", test_frontend() == 0); + TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0); + TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0); + TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0); + TEST_ASSERT_VAL("test metric group", test_metric_group() == 0); + return 0; +} diff --git a/tools/perf/tests/parse-no-sample-id-all.c b/tools/perf/tests/parse-no-sample-id-all.c new file mode 100644 index 000000000..adf3c9c4a --- /dev/null +++ b/tools/perf/tests/parse-no-sample-id-all.c @@ -0,0 +1,105 @@ +#include <linux/kernel.h> +#include <linux/types.h> +#include <stddef.h> + +#include "tests.h" + +#include "event.h" +#include "evlist.h" +#include "header.h" +#include "debug.h" + +static int process_event(struct evlist **pevlist, union perf_event *event) +{ + struct perf_sample sample; + + if (event->header.type == PERF_RECORD_HEADER_ATTR) { + if (perf_event__process_attr(NULL, event, pevlist)) { + pr_debug("perf_event__process_attr failed\n"); + return -1; + } + return 0; + } + + if (event->header.type >= PERF_RECORD_USER_TYPE_START) + return -1; + + if (!*pevlist) + return -1; + + if (perf_evlist__parse_sample(*pevlist, event, &sample)) { + pr_debug("perf_evlist__parse_sample failed\n"); + return -1; + } + + return 0; +} + +static int process_events(union perf_event **events, size_t count) +{ + struct evlist *evlist = NULL; + int err = 0; + size_t i; + + for (i = 0; i < count && !err; i++) + err = process_event(&evlist, events[i]); + + evlist__delete(evlist); + + return err; +} + +struct test_attr_event { + struct perf_event_header header; + struct perf_event_attr attr; + u64 id; +}; + +/** + * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set. + * + * This function tests parsing data produced on kernel's that do not support the + * sample_id_all bit. Without the sample_id_all bit, non-sample events (such as + * mmap events) do not have an id sample appended, and consequently logic + * designed to determine the id will not work. That case happens when there is + * more than one selected event, so this test processes three events: 2 + * attributes representing the selected events and one mmap event. + * + * Return: %0 on success, %-1 if the test fails. + */ +int test__parse_no_sample_id_all(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err; + + struct test_attr_event event1 = { + .header = { + .type = PERF_RECORD_HEADER_ATTR, + .size = sizeof(struct test_attr_event), + }, + .id = 1, + }; + struct test_attr_event event2 = { + .header = { + .type = PERF_RECORD_HEADER_ATTR, + .size = sizeof(struct test_attr_event), + }, + .id = 2, + }; + struct perf_record_mmap event3 = { + .header = { + .type = PERF_RECORD_MMAP, + .size = sizeof(struct perf_record_mmap), + }, + }; + union perf_event *events[] = { + (union perf_event *)&event1, + (union perf_event *)&event2, + (union perf_event *)&event3, + }; + + err = process_events(events, ARRAY_SIZE(events)); + if (err) + return -1; + + return 0; +} diff --git a/tools/perf/tests/pe-file-parsing.c b/tools/perf/tests/pe-file-parsing.c new file mode 100644 index 000000000..58b90c42e --- /dev/null +++ b/tools/perf/tests/pe-file-parsing.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdbool.h> +#include <inttypes.h> +#include <stdlib.h> +#include <string.h> +#include <linux/bitops.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <subcmd/exec-cmd.h> + +#include "debug.h" +#include "util/build-id.h" +#include "util/symbol.h" +#include "util/dso.h" + +#include "tests.h" + +#ifdef HAVE_LIBBFD_SUPPORT + +static int run_dir(const char *d) +{ + char filename[PATH_MAX]; + char debugfile[PATH_MAX]; + struct build_id bid; + char debuglink[PATH_MAX]; + char expect_build_id[] = { + 0x5a, 0x0f, 0xd8, 0x82, 0xb5, 0x30, 0x84, 0x22, + 0x4b, 0xa4, 0x7b, 0x62, 0x4c, 0x55, 0xa4, 0x69, + }; + char expect_debuglink[PATH_MAX] = "pe-file.exe.debug"; + struct dso *dso; + struct symbol *sym; + int ret; + + scnprintf(filename, PATH_MAX, "%s/pe-file.exe", d); + ret = filename__read_build_id(filename, &bid); + TEST_ASSERT_VAL("Failed to read build_id", + ret == sizeof(expect_build_id)); + TEST_ASSERT_VAL("Wrong build_id", !memcmp(bid.data, expect_build_id, + sizeof(expect_build_id))); + + ret = filename__read_debuglink(filename, debuglink, PATH_MAX); + TEST_ASSERT_VAL("Failed to read debuglink", ret == 0); + TEST_ASSERT_VAL("Wrong debuglink", + !strcmp(debuglink, expect_debuglink)); + + scnprintf(debugfile, PATH_MAX, "%s/%s", d, debuglink); + ret = filename__read_build_id(debugfile, &bid); + TEST_ASSERT_VAL("Failed to read debug file build_id", + ret == sizeof(expect_build_id)); + TEST_ASSERT_VAL("Wrong build_id", !memcmp(bid.data, expect_build_id, + sizeof(expect_build_id))); + + dso = dso__new(filename); + TEST_ASSERT_VAL("Failed to get dso", dso); + + ret = dso__load_bfd_symbols(dso, debugfile); + TEST_ASSERT_VAL("Failed to load symbols", ret == 0); + + dso__sort_by_name(dso); + sym = dso__find_symbol_by_name(dso, "main"); + TEST_ASSERT_VAL("Failed to find main", sym); + dso__delete(dso); + + return TEST_OK; +} + +int test__pe_file_parsing(struct test *test __maybe_unused, + int subtest __maybe_unused) +{ + struct stat st; + char path_dir[PATH_MAX]; + + /* First try development tree tests. */ + if (!lstat("./tests", &st)) + return run_dir("./tests"); + + /* Then installed path. */ + snprintf(path_dir, PATH_MAX, "%s/tests", get_argv_exec_path()); + + if (!lstat(path_dir, &st)) + return run_dir(path_dir); + + return TEST_SKIP; +} + +#else + +int test__pe_file_parsing(struct test *test __maybe_unused, + int subtest __maybe_unused) +{ + return TEST_SKIP; +} + +#endif diff --git a/tools/perf/tests/pe-file.c b/tools/perf/tests/pe-file.c new file mode 100644 index 000000000..eb3df5e98 --- /dev/null +++ b/tools/perf/tests/pe-file.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 + +// pe-file.exe and pe-file.exe.debug built with; +// x86_64-w64-mingw32-gcc -o pe-file.exe pe-file.c +// -Wl,--file-alignment,4096 -Wl,--build-id +// x86_64-w64-mingw32-objcopy --only-keep-debug +// --compress-debug-sections pe-file.exe pe-file.exe.debug +// x86_64-w64-mingw32-objcopy --strip-debug +// --add-gnu-debuglink=pe-file.exe.debug pe-file.exe + +int main(int argc, char const *argv[]) +{ + return 0; +} diff --git a/tools/perf/tests/pe-file.exe b/tools/perf/tests/pe-file.exe Binary files differnew file mode 100644 index 000000000..838a46dae --- /dev/null +++ b/tools/perf/tests/pe-file.exe diff --git a/tools/perf/tests/pe-file.exe.debug b/tools/perf/tests/pe-file.exe.debug Binary files differnew file mode 100644 index 000000000..287d6718d --- /dev/null +++ b/tools/perf/tests/pe-file.exe.debug diff --git a/tools/perf/tests/perf-hooks.c b/tools/perf/tests/perf-hooks.c new file mode 100644 index 000000000..dd865e0be --- /dev/null +++ b/tools/perf/tests/perf-hooks.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <signal.h> +#include <stdlib.h> + +#include "tests.h" +#include "debug.h" +#include "perf-hooks.h" + +static void sigsegv_handler(int sig __maybe_unused) +{ + pr_debug("SIGSEGV is observed as expected, try to recover.\n"); + perf_hooks__recover(); + signal(SIGSEGV, SIG_DFL); + raise(SIGSEGV); + exit(-1); +} + + +static void the_hook(void *_hook_flags) +{ + int *hook_flags = _hook_flags; + + *hook_flags = 1234; + + /* Generate a segfault, test perf_hooks__recover */ + raise(SIGSEGV); +} + +int test__perf_hooks(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int hook_flags = 0; + + signal(SIGSEGV, sigsegv_handler); + perf_hooks__set_hook("test", the_hook, &hook_flags); + perf_hooks__invoke_test(); + + /* hook is triggered? */ + if (hook_flags != 1234) { + pr_debug("Setting failed: %d (%p)\n", hook_flags, &hook_flags); + return TEST_FAIL; + } + + /* the buggy hook is removed? */ + if (perf_hooks__get_hook("test")) + return TEST_FAIL; + return TEST_OK; +} diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c new file mode 100644 index 000000000..67d3f5aad --- /dev/null +++ b/tools/perf/tests/perf-record.c @@ -0,0 +1,334 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <inttypes.h> +#include <linux/string.h> +/* For the CLR_() macros */ +#include <pthread.h> + +#include <sched.h> +#include <perf/mmap.h> +#include "evlist.h" +#include "evsel.h" +#include "debug.h" +#include "record.h" +#include "tests.h" +#include "util/mmap.h" + +static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t *maskp) +{ + int i, cpu = -1, nrcpus = 1024; +realloc: + CPU_ZERO(maskp); + + if (sched_getaffinity(pid, sizeof(*maskp), maskp) == -1) { + if (errno == EINVAL && nrcpus < (1024 << 8)) { + nrcpus = nrcpus << 2; + goto realloc; + } + perror("sched_getaffinity"); + return -1; + } + + for (i = 0; i < nrcpus; i++) { + if (CPU_ISSET(i, maskp)) { + if (cpu == -1) + cpu = i; + else + CPU_CLR(i, maskp); + } + } + + return cpu; +} + +int test__PERF_RECORD(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct record_opts opts = { + .target = { + .uid = UINT_MAX, + .uses_mmap = true, + }, + .no_buffering = true, + .mmap_pages = 256, + }; + cpu_set_t cpu_mask; + size_t cpu_mask_size = sizeof(cpu_mask); + struct evlist *evlist = perf_evlist__new_dummy(); + struct evsel *evsel; + struct perf_sample sample; + const char *cmd = "sleep"; + const char *argv[] = { cmd, "1", NULL, }; + char *bname, *mmap_filename; + u64 prev_time = 0; + bool found_cmd_mmap = false, + found_coreutils_mmap = false, + found_libc_mmap = false, + found_vdso_mmap = false, + found_ld_mmap = false; + int err = -1, errs = 0, i, wakeups = 0; + u32 cpu; + int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, }; + char sbuf[STRERR_BUFSIZE]; + + if (evlist == NULL) /* Fallback for kernels lacking PERF_COUNT_SW_DUMMY */ + evlist = perf_evlist__new_default(); + + if (evlist == NULL) { + pr_debug("Not enough memory to create evlist\n"); + goto out; + } + + /* + * Create maps of threads and cpus to monitor. In this case + * we start with all threads and cpus (-1, -1) but then in + * perf_evlist__prepare_workload we'll fill in the only thread + * we're monitoring, the one forked there. + */ + err = perf_evlist__create_maps(evlist, &opts.target); + if (err < 0) { + pr_debug("Not enough memory to create thread/cpu maps\n"); + goto out_delete_evlist; + } + + /* + * Prepare the workload in argv[] to run, it'll fork it, and then wait + * for perf_evlist__start_workload() to exec it. This is done this way + * so that we have time to open the evlist (calling sys_perf_event_open + * on all the fds) and then mmap them. + */ + err = perf_evlist__prepare_workload(evlist, &opts.target, argv, false, NULL); + if (err < 0) { + pr_debug("Couldn't run the workload!\n"); + goto out_delete_evlist; + } + + /* + * Config the evsels, setting attr->comm on the first one, etc. + */ + evsel = evlist__first(evlist); + evsel__set_sample_bit(evsel, CPU); + evsel__set_sample_bit(evsel, TID); + evsel__set_sample_bit(evsel, TIME); + perf_evlist__config(evlist, &opts, NULL); + + err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask); + if (err < 0) { + pr_debug("sched__get_first_possible_cpu: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + cpu = err; + + /* + * So that we can check perf_sample.cpu on all the samples. + */ + if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, &cpu_mask) < 0) { + pr_debug("sched_setaffinity: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + /* + * Call sys_perf_event_open on all the fds on all the evsels, + * grouping them if asked to. + */ + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + /* + * mmap the first fd on a given CPU and ask for events for the other + * fds in the same CPU to be injected in the same mmap ring buffer + * (using ioctl(PERF_EVENT_IOC_SET_OUTPUT)). + */ + err = evlist__mmap(evlist, opts.mmap_pages); + if (err < 0) { + pr_debug("evlist__mmap: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + /* + * Now that all is properly set up, enable the events, they will + * count just on workload.pid, which will start... + */ + evlist__enable(evlist); + + /* + * Now! + */ + perf_evlist__start_workload(evlist); + + while (1) { + int before = total_events; + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + union perf_event *event; + struct mmap *md; + + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + const u32 type = event->header.type; + const char *name = perf_event__name(type); + + ++total_events; + if (type < PERF_RECORD_MAX) + nr_events[type]++; + + err = perf_evlist__parse_sample(evlist, event, &sample); + if (err < 0) { + if (verbose > 0) + perf_event__fprintf(event, NULL, stderr); + pr_debug("Couldn't parse sample\n"); + goto out_delete_evlist; + } + + if (verbose > 0) { + pr_info("%" PRIu64" %d ", sample.time, sample.cpu); + perf_event__fprintf(event, NULL, stderr); + } + + if (prev_time > sample.time) { + pr_debug("%s going backwards in time, prev=%" PRIu64 ", curr=%" PRIu64 "\n", + name, prev_time, sample.time); + ++errs; + } + + prev_time = sample.time; + + if (sample.cpu != cpu) { + pr_debug("%s with unexpected cpu, expected %d, got %d\n", + name, cpu, sample.cpu); + ++errs; + } + + if ((pid_t)sample.pid != evlist->workload.pid) { + pr_debug("%s with unexpected pid, expected %d, got %d\n", + name, evlist->workload.pid, sample.pid); + ++errs; + } + + if ((pid_t)sample.tid != evlist->workload.pid) { + pr_debug("%s with unexpected tid, expected %d, got %d\n", + name, evlist->workload.pid, sample.tid); + ++errs; + } + + if ((type == PERF_RECORD_COMM || + type == PERF_RECORD_MMAP || + type == PERF_RECORD_MMAP2 || + type == PERF_RECORD_FORK || + type == PERF_RECORD_EXIT) && + (pid_t)event->comm.pid != evlist->workload.pid) { + pr_debug("%s with unexpected pid/tid\n", name); + ++errs; + } + + if ((type == PERF_RECORD_COMM || + type == PERF_RECORD_MMAP || + type == PERF_RECORD_MMAP2) && + event->comm.pid != event->comm.tid) { + pr_debug("%s with different pid/tid!\n", name); + ++errs; + } + + switch (type) { + case PERF_RECORD_COMM: + if (strcmp(event->comm.comm, cmd)) { + pr_debug("%s with unexpected comm!\n", name); + ++errs; + } + break; + case PERF_RECORD_EXIT: + goto found_exit; + case PERF_RECORD_MMAP: + mmap_filename = event->mmap.filename; + goto check_bname; + case PERF_RECORD_MMAP2: + mmap_filename = event->mmap2.filename; + check_bname: + bname = strrchr(mmap_filename, '/'); + if (bname != NULL) { + if (!found_cmd_mmap) + found_cmd_mmap = !strcmp(bname + 1, cmd); + if (!found_coreutils_mmap) + found_coreutils_mmap = !strcmp(bname + 1, "coreutils"); + if (!found_libc_mmap) + found_libc_mmap = !strncmp(bname + 1, "libc", 4); + if (!found_ld_mmap) + found_ld_mmap = !strncmp(bname + 1, "ld", 2); + } else if (!found_vdso_mmap) + found_vdso_mmap = !strcmp(mmap_filename, "[vdso]"); + break; + + case PERF_RECORD_SAMPLE: + /* Just ignore samples for now */ + break; + default: + pr_debug("Unexpected perf_event->header.type %d!\n", + type); + ++errs; + } + + perf_mmap__consume(&md->core); + } + perf_mmap__read_done(&md->core); + } + + /* + * We don't use poll here because at least at 3.1 times the + * PERF_RECORD_{!SAMPLE} events don't honour + * perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does. + */ + if (total_events == before && false) + evlist__poll(evlist, -1); + + sleep(1); + if (++wakeups > 5) { + pr_debug("No PERF_RECORD_EXIT event!\n"); + break; + } + } + +found_exit: + if (nr_events[PERF_RECORD_COMM] > 1 + !!found_coreutils_mmap) { + pr_debug("Excessive number of PERF_RECORD_COMM events!\n"); + ++errs; + } + + if (nr_events[PERF_RECORD_COMM] == 0) { + pr_debug("Missing PERF_RECORD_COMM for %s!\n", cmd); + ++errs; + } + + if (!found_cmd_mmap && !found_coreutils_mmap) { + pr_debug("PERF_RECORD_MMAP for %s missing!\n", cmd); + ++errs; + } + + if (!found_libc_mmap) { + pr_debug("PERF_RECORD_MMAP for %s missing!\n", "libc"); + ++errs; + } + + if (!found_ld_mmap) { + pr_debug("PERF_RECORD_MMAP for %s missing!\n", "ld"); + ++errs; + } + + if (!found_vdso_mmap) { + pr_debug("PERF_RECORD_MMAP for %s missing!\n", "[vdso]"); + ++errs; + } +out_delete_evlist: + evlist__delete(evlist); +out: + return (err < 0 || errs > 0) ? -1 : 0; +} diff --git a/tools/perf/tests/perf-targz-src-pkg b/tools/perf/tests/perf-targz-src-pkg new file mode 100755 index 000000000..fae26b1cf --- /dev/null +++ b/tools/perf/tests/perf-targz-src-pkg @@ -0,0 +1,22 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# Test one of the main kernel Makefile targets to generate a perf sources tarball +# suitable for build outside the full kernel sources. +# +# This is to test that the tools/perf/MANIFEST file lists all the files needed to +# be in such tarball, which sometimes gets broken when we move files around, +# like when we made some files that were in tools/perf/ available to other tools/ +# codebases by moving it to tools/include/, etc. + +PERF=$1 +cd ${PERF}/../.. +make perf-targz-src-pkg > /dev/null +TARBALL=$(ls -rt perf-*.tar.gz) +TMP_DEST=$(mktemp -d) +tar xf ${TARBALL} -C $TMP_DEST +rm -f ${TARBALL} +cd - > /dev/null +make -C $TMP_DEST/perf*/tools/perf > /dev/null +RC=$? +rm -rf ${TMP_DEST} +exit $RC diff --git a/tools/perf/tests/pfm.c b/tools/perf/tests/pfm.c new file mode 100644 index 000000000..76a53126e --- /dev/null +++ b/tools/perf/tests/pfm.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test support for libpfm4 event encodings. + * + * Copyright 2020 Google LLC. + */ +#include "tests.h" +#include "util/debug.h" +#include "util/evlist.h" +#include "util/pfm.h" + +#include <linux/kernel.h> + +#ifdef HAVE_LIBPFM +static int test__pfm_events(void); +static int test__pfm_group(void); +#endif + +static const struct { + int (*func)(void); + const char *desc; +} pfm_testcase_table[] = { +#ifdef HAVE_LIBPFM + { + .func = test__pfm_events, + .desc = "test of individual --pfm-events", + }, + { + .func = test__pfm_group, + .desc = "test groups of --pfm-events", + }, +#endif +}; + +#ifdef HAVE_LIBPFM +static int count_pfm_events(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel; + int count = 0; + + perf_evlist__for_each_entry(evlist, evsel) { + count++; + } + return count; +} + +static int test__pfm_events(void) +{ + struct evlist *evlist; + struct option opt; + size_t i; + const struct { + const char *events; + int nr_events; + } table[] = { + { + .events = "", + .nr_events = 0, + }, + { + .events = "instructions", + .nr_events = 1, + }, + { + .events = "instructions,cycles", + .nr_events = 2, + }, + { + .events = "stereolab", + .nr_events = 0, + }, + { + .events = "instructions,instructions", + .nr_events = 2, + }, + { + .events = "stereolab,instructions", + .nr_events = 0, + }, + { + .events = "instructions,stereolab", + .nr_events = 1, + }, + }; + + for (i = 0; i < ARRAY_SIZE(table); i++) { + evlist = evlist__new(); + if (evlist == NULL) + return -ENOMEM; + + opt.value = evlist; + parse_libpfm_events_option(&opt, + table[i].events, + 0); + TEST_ASSERT_EQUAL(table[i].events, + count_pfm_events(&evlist->core), + table[i].nr_events); + TEST_ASSERT_EQUAL(table[i].events, + evlist->nr_groups, + 0); + + evlist__delete(evlist); + } + return 0; +} + +static int test__pfm_group(void) +{ + struct evlist *evlist; + struct option opt; + size_t i; + const struct { + const char *events; + int nr_events; + int nr_groups; + } table[] = { + { + .events = "{},", + .nr_events = 0, + .nr_groups = 0, + }, + { + .events = "{instructions}", + .nr_events = 1, + .nr_groups = 1, + }, + { + .events = "{instructions},{}", + .nr_events = 1, + .nr_groups = 1, + }, + { + .events = "{},{instructions}", + .nr_events = 0, + .nr_groups = 0, + }, + { + .events = "{instructions},{instructions}", + .nr_events = 2, + .nr_groups = 2, + }, + { + .events = "{instructions,cycles},{instructions,cycles}", + .nr_events = 4, + .nr_groups = 2, + }, + { + .events = "{stereolab}", + .nr_events = 0, + .nr_groups = 0, + }, + { + .events = + "{instructions,cycles},{instructions,stereolab}", + .nr_events = 3, + .nr_groups = 1, + }, + }; + + for (i = 0; i < ARRAY_SIZE(table); i++) { + evlist = evlist__new(); + if (evlist == NULL) + return -ENOMEM; + + opt.value = evlist; + parse_libpfm_events_option(&opt, + table[i].events, + 0); + TEST_ASSERT_EQUAL(table[i].events, + count_pfm_events(&evlist->core), + table[i].nr_events); + TEST_ASSERT_EQUAL(table[i].events, + evlist->nr_groups, + table[i].nr_groups); + + evlist__delete(evlist); + } + return 0; +} +#endif + +const char *test__pfm_subtest_get_desc(int i) +{ + if (i < 0 || i >= (int)ARRAY_SIZE(pfm_testcase_table)) + return NULL; + return pfm_testcase_table[i].desc; +} + +int test__pfm_subtest_get_nr(void) +{ + return (int)ARRAY_SIZE(pfm_testcase_table); +} + +int test__pfm(struct test *test __maybe_unused, int i __maybe_unused) +{ +#ifdef HAVE_LIBPFM + if (i < 0 || i >= (int)ARRAY_SIZE(pfm_testcase_table)) + return TEST_FAIL; + return pfm_testcase_table[i].func(); +#else + return TEST_SKIP; +#endif +} diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c new file mode 100644 index 000000000..31f987bb7 --- /dev/null +++ b/tools/perf/tests/pmu-events.c @@ -0,0 +1,664 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "math.h" +#include "parse-events.h" +#include "pmu.h" +#include "tests.h" +#include <errno.h> +#include <stdio.h> +#include <linux/kernel.h> +#include <linux/zalloc.h> +#include "debug.h" +#include "../pmu-events/pmu-events.h" +#include "util/evlist.h" +#include "util/expr.h" +#include "util/parse-events.h" + +struct perf_pmu_test_event { + struct pmu_event event; + + /* extra events for aliases */ + const char *alias_str; + + /* + * Note: For when PublicDescription does not exist in the JSON, we + * will have no long_desc in pmu_event.long_desc, but long_desc may + * be set in the alias. + */ + const char *alias_long_desc; +}; + +static struct perf_pmu_test_event test_cpu_events[] = { + { + .event = { + .name = "bp_l1_btb_correct", + .event = "event=0x8a", + .desc = "L1 BTB Correction", + .topic = "branch", + }, + .alias_str = "event=0x8a", + .alias_long_desc = "L1 BTB Correction", + }, + { + .event = { + .name = "bp_l2_btb_correct", + .event = "event=0x8b", + .desc = "L2 BTB Correction", + .topic = "branch", + }, + .alias_str = "event=0x8b", + .alias_long_desc = "L2 BTB Correction", + }, + { + .event = { + .name = "segment_reg_loads.any", + .event = "umask=0x80,period=200000,event=0x6", + .desc = "Number of segment register loads", + .topic = "other", + }, + .alias_str = "umask=0x80,(null)=0x30d40,event=0x6", + .alias_long_desc = "Number of segment register loads", + }, + { + .event = { + .name = "dispatch_blocked.any", + .event = "umask=0x20,period=200000,event=0x9", + .desc = "Memory cluster signals to block micro-op dispatch for any reason", + .topic = "other", + }, + .alias_str = "umask=0x20,(null)=0x30d40,event=0x9", + .alias_long_desc = "Memory cluster signals to block micro-op dispatch for any reason", + }, + { + .event = { + .name = "eist_trans", + .event = "umask=0x0,period=200000,event=0x3a", + .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions", + .topic = "other", + }, + .alias_str = "umask=0,(null)=0x30d40,event=0x3a", + .alias_long_desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions", + }, + { /* sentinel */ + .event = { + .name = NULL, + }, + }, +}; + +static struct perf_pmu_test_event test_uncore_events[] = { + { + .event = { + .name = "uncore_hisi_ddrc.flux_wcmd", + .event = "event=0x2", + .desc = "DDRC write commands. Unit: hisi_sccl,ddrc ", + .topic = "uncore", + .long_desc = "DDRC write commands", + .pmu = "hisi_sccl,ddrc", + }, + .alias_str = "event=0x2", + .alias_long_desc = "DDRC write commands", + }, + { + .event = { + .name = "unc_cbo_xsnp_response.miss_eviction", + .event = "umask=0x81,event=0x22", + .desc = "Unit: uncore_cbox A cross-core snoop resulted from L3 Eviction which misses in some processor core", + .topic = "uncore", + .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", + .pmu = "uncore_cbox", + }, + .alias_str = "umask=0x81,event=0x22", + .alias_long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", + }, + { /* sentinel */ + .event = { + .name = NULL, + }, + } +}; + +const int total_test_events_size = ARRAY_SIZE(test_uncore_events); + +static bool is_same(const char *reference, const char *test) +{ + if (!reference && !test) + return true; + + if (reference && !test) + return false; + + if (!reference && test) + return false; + + return !strcmp(reference, test); +} + +static struct pmu_events_map *__test_pmu_get_events_map(void) +{ + struct pmu_events_map *map; + + for (map = &pmu_events_map[0]; map->cpuid; map++) { + if (!strcmp(map->cpuid, "testcpu")) + return map; + } + + pr_err("could not find test events map\n"); + + return NULL; +} + +/* Verify generated events from pmu-events.c is as expected */ +static int test_pmu_event_table(void) +{ + struct pmu_events_map *map = __test_pmu_get_events_map(); + struct pmu_event *table; + int map_events = 0, expected_events; + + /* ignore 2x sentinels */ + expected_events = ARRAY_SIZE(test_cpu_events) + + ARRAY_SIZE(test_uncore_events) - 2; + + if (!map) + return -1; + + for (table = map->table; table->name; table++) { + struct perf_pmu_test_event *test; + struct pmu_event *te; + bool found = false; + + if (table->pmu) + test = &test_uncore_events[0]; + else + test = &test_cpu_events[0]; + + te = &test->event; + + for (; te->name; test++, te = &test->event) { + if (strcmp(table->name, te->name)) + continue; + found = true; + map_events++; + + if (!is_same(table->desc, te->desc)) { + pr_debug2("testing event table %s: mismatched desc, %s vs %s\n", + table->name, table->desc, te->desc); + return -1; + } + + if (!is_same(table->topic, te->topic)) { + pr_debug2("testing event table %s: mismatched topic, %s vs %s\n", + table->name, table->topic, + te->topic); + return -1; + } + + if (!is_same(table->long_desc, te->long_desc)) { + pr_debug2("testing event table %s: mismatched long_desc, %s vs %s\n", + table->name, table->long_desc, + te->long_desc); + return -1; + } + + if (!is_same(table->unit, te->unit)) { + pr_debug2("testing event table %s: mismatched unit, %s vs %s\n", + table->name, table->unit, + te->unit); + return -1; + } + + if (!is_same(table->perpkg, te->perpkg)) { + pr_debug2("testing event table %s: mismatched perpkg, %s vs %s\n", + table->name, table->perpkg, + te->perpkg); + return -1; + } + + if (!is_same(table->metric_expr, te->metric_expr)) { + pr_debug2("testing event table %s: mismatched metric_expr, %s vs %s\n", + table->name, table->metric_expr, + te->metric_expr); + return -1; + } + + if (!is_same(table->metric_name, te->metric_name)) { + pr_debug2("testing event table %s: mismatched metric_name, %s vs %s\n", + table->name, table->metric_name, + te->metric_name); + return -1; + } + + if (!is_same(table->deprecated, te->deprecated)) { + pr_debug2("testing event table %s: mismatched deprecated, %s vs %s\n", + table->name, table->deprecated, + te->deprecated); + return -1; + } + + pr_debug("testing event table %s: pass\n", table->name); + } + + if (!found) { + pr_err("testing event table: could not find event %s\n", + table->name); + return -1; + } + } + + if (map_events != expected_events) { + pr_err("testing event table: found %d, but expected %d\n", + map_events, expected_events); + return -1; + } + + return 0; +} + +static struct perf_pmu_alias *find_alias(const char *test_event, struct list_head *aliases) +{ + struct perf_pmu_alias *alias; + + list_for_each_entry(alias, aliases, list) + if (!strcmp(test_event, alias->name)) + return alias; + + return NULL; +} + +/* Verify aliases are as expected */ +static int __test__pmu_event_aliases(char *pmu_name, int *count) +{ + struct perf_pmu_test_event *test; + struct pmu_event *te; + struct perf_pmu *pmu; + LIST_HEAD(aliases); + int res = 0; + bool use_uncore_table; + struct pmu_events_map *map = __test_pmu_get_events_map(); + struct perf_pmu_alias *a, *tmp; + + if (!map) + return -1; + + if (is_pmu_core(pmu_name)) { + test = &test_cpu_events[0]; + use_uncore_table = false; + } else { + test = &test_uncore_events[0]; + use_uncore_table = true; + } + + pmu = zalloc(sizeof(*pmu)); + if (!pmu) + return -1; + + pmu->name = pmu_name; + + pmu_add_cpu_aliases_map(&aliases, pmu, map); + + for (te = &test->event; te->name; test++, te = &test->event) { + struct perf_pmu_alias *alias = find_alias(te->name, &aliases); + + if (!alias) { + bool uncore_match = pmu_uncore_alias_match(pmu_name, + te->pmu); + + if (use_uncore_table && !uncore_match) { + pr_debug3("testing aliases PMU %s: skip matching alias %s\n", + pmu_name, te->name); + continue; + } + + pr_debug2("testing aliases PMU %s: no alias, alias_table->name=%s\n", + pmu_name, te->name); + res = -1; + break; + } + + if (!is_same(alias->desc, te->desc)) { + pr_debug2("testing aliases PMU %s: mismatched desc, %s vs %s\n", + pmu_name, alias->desc, te->desc); + res = -1; + break; + } + + if (!is_same(alias->long_desc, test->alias_long_desc)) { + pr_debug2("testing aliases PMU %s: mismatched long_desc, %s vs %s\n", + pmu_name, alias->long_desc, + test->alias_long_desc); + res = -1; + break; + } + + if (!is_same(alias->str, test->alias_str)) { + pr_debug2("testing aliases PMU %s: mismatched str, %s vs %s\n", + pmu_name, alias->str, test->alias_str); + res = -1; + break; + } + + if (!is_same(alias->topic, te->topic)) { + pr_debug2("testing aliases PMU %s: mismatched topic, %s vs %s\n", + pmu_name, alias->topic, te->topic); + res = -1; + break; + } + + (*count)++; + pr_debug2("testing aliases PMU %s: matched event %s\n", + pmu_name, alias->name); + } + + list_for_each_entry_safe(a, tmp, &aliases, list) { + list_del(&a->list); + perf_pmu_free_alias(a); + } + free(pmu); + return res; +} + + +static int test_aliases(void) +{ + struct perf_pmu *pmu = NULL; + + while ((pmu = perf_pmu__scan(pmu)) != NULL) { + int count = 0; + + if (list_empty(&pmu->format)) { + pr_debug2("skipping testing PMU %s\n", pmu->name); + continue; + } + + if (__test__pmu_event_aliases(pmu->name, &count)) { + pr_debug("testing PMU %s aliases: failed\n", pmu->name); + return -1; + } + + if (count == 0) + pr_debug3("testing PMU %s aliases: no events to match\n", + pmu->name); + else + pr_debug("testing PMU %s aliases: pass\n", pmu->name); + } + + return 0; +} + +static bool is_number(const char *str) +{ + char *end_ptr; + double v; + + errno = 0; + v = strtod(str, &end_ptr); + (void)v; // We're not interested in this value, only if it is valid + return errno == 0 && end_ptr != str; +} + +static int check_parse_id(const char *id, struct parse_events_error *error, + struct perf_pmu *fake_pmu) +{ + struct evlist *evlist; + int ret; + + /* Numbers are always valid. */ + if (is_number(id)) + return 0; + + evlist = evlist__new(); + if (!evlist) + return -ENOMEM; + ret = __parse_events(evlist, id, error, fake_pmu); + evlist__delete(evlist); + return ret; +} + +static int check_parse_cpu(const char *id, bool same_cpu, struct pmu_event *pe) +{ + struct parse_events_error error = { .idx = 0, }; + + int ret = check_parse_id(id, &error, NULL); + if (ret && same_cpu) { + pr_warning("Parse event failed metric '%s' id '%s' expr '%s'\n", + pe->metric_name, id, pe->metric_expr); + pr_warning("Error string '%s' help '%s'\n", error.str, + error.help); + } else if (ret) { + pr_debug3("Parse event failed, but for an event that may not be supported by this CPU.\nid '%s' metric '%s' expr '%s'\n", + id, pe->metric_name, pe->metric_expr); + ret = 0; + } + free(error.str); + free(error.help); + free(error.first_str); + free(error.first_help); + return ret; +} + +static int check_parse_fake(const char *id) +{ + struct parse_events_error error = { .idx = 0, }; + int ret = check_parse_id(id, &error, &perf_pmu__fake); + + free(error.str); + free(error.help); + free(error.first_str); + free(error.first_help); + return ret; +} + +static void expr_failure(const char *msg, + const struct pmu_events_map *map, + const struct pmu_event *pe) +{ + pr_debug("%s for map %s %s %s\n", + msg, map->cpuid, map->version, map->type); + pr_debug("On metric %s\n", pe->metric_name); + pr_debug("On expression %s\n", pe->metric_expr); +} + +static int test_parsing(void) +{ + struct pmu_events_map *cpus_map = perf_pmu__find_map(NULL); + struct pmu_events_map *map; + struct pmu_event *pe; + int i, j, k; + int ret = 0; + struct expr_parse_ctx ctx; + double result; + + i = 0; + for (;;) { + map = &pmu_events_map[i++]; + if (!map->table) + break; + j = 0; + for (;;) { + struct hashmap_entry *cur; + size_t bkt; + + pe = &map->table[j++]; + if (!pe->name && !pe->metric_group && !pe->metric_name) + break; + if (!pe->metric_expr) + continue; + expr__ctx_init(&ctx); + if (expr__find_other(pe->metric_expr, NULL, &ctx, 0) + < 0) { + expr_failure("Parse other failed", map, pe); + ret++; + continue; + } + + /* + * Add all ids with a made up value. The value may + * trigger divide by zero when subtracted and so try to + * make them unique. + */ + k = 1; + hashmap__for_each_entry((&ctx.ids), cur, bkt) + expr__add_id_val(&ctx, strdup(cur->key), k++); + + hashmap__for_each_entry((&ctx.ids), cur, bkt) { + if (check_parse_cpu(cur->key, map == cpus_map, + pe)) + ret++; + } + + if (expr__parse(&result, &ctx, pe->metric_expr, 0)) { + expr_failure("Parse failed", map, pe); + ret++; + } + expr__ctx_clear(&ctx); + } + } + /* TODO: fail when not ok */ + return ret == 0 ? TEST_OK : TEST_SKIP; +} + +struct test_metric { + const char *str; +}; + +static struct test_metric metrics[] = { + { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." }, + { "imx8_ddr0@read\\-cycles@ * 4 * 4", }, + { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", }, + { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", }, + { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", }, +}; + +static int metric_parse_fake(const char *str) +{ + struct expr_parse_ctx ctx; + struct hashmap_entry *cur; + double result; + int ret = -1; + size_t bkt; + int i; + + pr_debug("parsing '%s'\n", str); + + expr__ctx_init(&ctx); + if (expr__find_other(str, NULL, &ctx, 0) < 0) { + pr_err("expr__find_other failed\n"); + return -1; + } + + /* + * Add all ids with a made up value. The value may + * trigger divide by zero when subtracted and so try to + * make them unique. + */ + i = 1; + hashmap__for_each_entry((&ctx.ids), cur, bkt) + expr__add_id_val(&ctx, strdup(cur->key), i++); + + hashmap__for_each_entry((&ctx.ids), cur, bkt) { + if (check_parse_fake(cur->key)) { + pr_err("check_parse_fake failed\n"); + goto out; + } + } + + if (expr__parse(&result, &ctx, str, 0)) + pr_err("expr__parse failed\n"); + else + ret = 0; + +out: + expr__ctx_clear(&ctx); + return ret; +} + +/* + * Parse all the metrics for current architecture, + * or all defined cpus via the 'fake_pmu' + * in parse_events. + */ +static int test_parsing_fake(void) +{ + struct pmu_events_map *map; + struct pmu_event *pe; + unsigned int i, j; + int err = 0; + + for (i = 0; i < ARRAY_SIZE(metrics); i++) { + err = metric_parse_fake(metrics[i].str); + if (err) + return err; + } + + i = 0; + for (;;) { + map = &pmu_events_map[i++]; + if (!map->table) + break; + j = 0; + for (;;) { + pe = &map->table[j++]; + if (!pe->name && !pe->metric_group && !pe->metric_name) + break; + if (!pe->metric_expr) + continue; + err = metric_parse_fake(pe->metric_expr); + if (err) + return err; + } + } + + return 0; +} + +static const struct { + int (*func)(void); + const char *desc; +} pmu_events_testcase_table[] = { + { + .func = test_pmu_event_table, + .desc = "PMU event table sanity", + }, + { + .func = test_aliases, + .desc = "PMU event map aliases", + }, + { + .func = test_parsing, + .desc = "Parsing of PMU event table metrics", + }, + { + .func = test_parsing_fake, + .desc = "Parsing of PMU event table metrics with fake PMUs", + }, +}; + +const char *test__pmu_events_subtest_get_desc(int subtest) +{ + if (subtest < 0 || + subtest >= (int)ARRAY_SIZE(pmu_events_testcase_table)) + return NULL; + return pmu_events_testcase_table[subtest].desc; +} + +const char *test__pmu_events_subtest_skip_reason(int subtest) +{ + if (subtest < 0 || + subtest >= (int)ARRAY_SIZE(pmu_events_testcase_table)) + return NULL; + if (pmu_events_testcase_table[subtest].func != test_parsing) + return NULL; + return "some metrics failed"; +} + +int test__pmu_events_subtest_get_nr(void) +{ + return (int)ARRAY_SIZE(pmu_events_testcase_table); +} + +int test__pmu_events(struct test *test __maybe_unused, int subtest) +{ + if (subtest < 0 || + subtest >= (int)ARRAY_SIZE(pmu_events_testcase_table)) + return TEST_FAIL; + return pmu_events_testcase_table[subtest].func(); +} diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c new file mode 100644 index 000000000..714e6830a --- /dev/null +++ b/tools/perf/tests/pmu.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "parse-events.h" +#include "pmu.h" +#include "tests.h" +#include <errno.h> +#include <stdio.h> +#include <linux/kernel.h> +#include <linux/limits.h> + +/* Simulated format definitions. */ +static struct test_format { + const char *name; + const char *value; +} test_formats[] = { + { "krava01", "config:0-1,62-63\n", }, + { "krava02", "config:10-17\n", }, + { "krava03", "config:5\n", }, + { "krava11", "config1:0,2,4,6,8,20-28\n", }, + { "krava12", "config1:63\n", }, + { "krava13", "config1:45-47\n", }, + { "krava21", "config2:0-3,10-13,20-23,30-33,40-43,50-53,60-63\n", }, + { "krava22", "config2:8,18,48,58\n", }, + { "krava23", "config2:28-29,38\n", }, +}; + +/* Simulated users input. */ +static struct parse_events_term test_terms[] = { + { + .config = (char *) "krava01", + .val.num = 15, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava02", + .val.num = 170, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava03", + .val.num = 1, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava11", + .val.num = 27, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava12", + .val.num = 1, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava13", + .val.num = 2, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava21", + .val.num = 119, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava22", + .val.num = 11, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, + { + .config = (char *) "krava23", + .val.num = 2, + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = PARSE_EVENTS__TERM_TYPE_USER, + }, +}; + +/* + * Prepare format directory data, exported by kernel + * at /sys/bus/event_source/devices/<dev>/format. + */ +static char *test_format_dir_get(void) +{ + static char dir[PATH_MAX]; + unsigned int i; + + snprintf(dir, PATH_MAX, "/tmp/perf-pmu-test-format-XXXXXX"); + if (!mkdtemp(dir)) + return NULL; + + for (i = 0; i < ARRAY_SIZE(test_formats); i++) { + static char name[PATH_MAX]; + struct test_format *format = &test_formats[i]; + FILE *file; + + scnprintf(name, PATH_MAX, "%s/%s", dir, format->name); + + file = fopen(name, "w"); + if (!file) + return NULL; + + if (1 != fwrite(format->value, strlen(format->value), 1, file)) + break; + + fclose(file); + } + + return dir; +} + +/* Cleanup format directory. */ +static int test_format_dir_put(char *dir) +{ + char buf[PATH_MAX]; + snprintf(buf, PATH_MAX, "rm -f %s/*\n", dir); + if (system(buf)) + return -1; + + snprintf(buf, PATH_MAX, "rmdir %s\n", dir); + return system(buf); +} + +static struct list_head *test_terms_list(void) +{ + static LIST_HEAD(terms); + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(test_terms); i++) + list_add_tail(&test_terms[i].list, &terms); + + return &terms; +} + +int test__pmu(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + char *format = test_format_dir_get(); + LIST_HEAD(formats); + struct list_head *terms = test_terms_list(); + int ret; + + if (!format) + return -EINVAL; + + do { + struct perf_event_attr attr; + + memset(&attr, 0, sizeof(attr)); + + ret = perf_pmu__format_parse(format, &formats); + if (ret) + break; + + ret = perf_pmu__config_terms("perf-pmu-test", &formats, &attr, + terms, false, NULL); + if (ret) + break; + + ret = -EINVAL; + + if (attr.config != 0xc00000000002a823) + break; + if (attr.config1 != 0x8000400000000145) + break; + if (attr.config2 != 0x0400000020041d07) + break; + + ret = 0; + } while (0); + + perf_pmu__del_formats(&formats); + test_format_dir_put(format); + return ret; +} diff --git a/tools/perf/tests/python-use.c b/tools/perf/tests/python-use.c new file mode 100644 index 000000000..98c6d474a --- /dev/null +++ b/tools/perf/tests/python-use.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Just test if we can load the python binding. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <linux/compiler.h> +#include "tests.h" +#include "util/debug.h" + +int test__python_use(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + char *cmd; + int ret; + + if (asprintf(&cmd, "echo \"import sys ; sys.path.append('%s'); import perf\" | %s %s", + PYTHONPATH, PYTHON, verbose > 0 ? "" : "2> /dev/null") < 0) + return -1; + + pr_debug("python usage test: \"%s\"\n", cmd); + ret = system(cmd) ? -1 : 0; + free(cmd); + return ret; +} diff --git a/tools/perf/tests/sample-parsing.c b/tools/perf/tests/sample-parsing.c new file mode 100644 index 000000000..33a589762 --- /dev/null +++ b/tools/perf/tests/sample-parsing.c @@ -0,0 +1,383 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdbool.h> +#include <inttypes.h> +#include <stdlib.h> +#include <string.h> +#include <linux/bitops.h> +#include <linux/kernel.h> +#include <linux/types.h> + +#include "map_symbol.h" +#include "branch.h" +#include "event.h" +#include "evsel.h" +#include "debug.h" +#include "util/synthetic-events.h" + +#include "tests.h" + +#define COMP(m) do { \ + if (s1->m != s2->m) { \ + pr_debug("Samples differ at '"#m"'\n"); \ + return false; \ + } \ +} while (0) + +#define MCOMP(m) do { \ + if (memcmp(&s1->m, &s2->m, sizeof(s1->m))) { \ + pr_debug("Samples differ at '"#m"'\n"); \ + return false; \ + } \ +} while (0) + +static bool samples_same(const struct perf_sample *s1, + const struct perf_sample *s2, + u64 type, u64 read_format) +{ + size_t i; + + if (type & PERF_SAMPLE_IDENTIFIER) + COMP(id); + + if (type & PERF_SAMPLE_IP) + COMP(ip); + + if (type & PERF_SAMPLE_TID) { + COMP(pid); + COMP(tid); + } + + if (type & PERF_SAMPLE_TIME) + COMP(time); + + if (type & PERF_SAMPLE_ADDR) + COMP(addr); + + if (type & PERF_SAMPLE_ID) + COMP(id); + + if (type & PERF_SAMPLE_STREAM_ID) + COMP(stream_id); + + if (type & PERF_SAMPLE_CPU) + COMP(cpu); + + if (type & PERF_SAMPLE_PERIOD) + COMP(period); + + if (type & PERF_SAMPLE_READ) { + if (read_format & PERF_FORMAT_GROUP) + COMP(read.group.nr); + else + COMP(read.one.value); + if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) + COMP(read.time_enabled); + if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) + COMP(read.time_running); + /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ + if (read_format & PERF_FORMAT_GROUP) { + for (i = 0; i < s1->read.group.nr; i++) + MCOMP(read.group.values[i]); + } else { + COMP(read.one.id); + } + } + + if (type & PERF_SAMPLE_CALLCHAIN) { + COMP(callchain->nr); + for (i = 0; i < s1->callchain->nr; i++) + COMP(callchain->ips[i]); + } + + if (type & PERF_SAMPLE_RAW) { + COMP(raw_size); + if (memcmp(s1->raw_data, s2->raw_data, s1->raw_size)) { + pr_debug("Samples differ at 'raw_data'\n"); + return false; + } + } + + if (type & PERF_SAMPLE_BRANCH_STACK) { + COMP(branch_stack->nr); + COMP(branch_stack->hw_idx); + for (i = 0; i < s1->branch_stack->nr; i++) + MCOMP(branch_stack->entries[i]); + } + + if (type & PERF_SAMPLE_REGS_USER) { + size_t sz = hweight_long(s1->user_regs.mask) * sizeof(u64); + + COMP(user_regs.mask); + COMP(user_regs.abi); + if (s1->user_regs.abi && + (!s1->user_regs.regs || !s2->user_regs.regs || + memcmp(s1->user_regs.regs, s2->user_regs.regs, sz))) { + pr_debug("Samples differ at 'user_regs'\n"); + return false; + } + } + + if (type & PERF_SAMPLE_STACK_USER) { + COMP(user_stack.size); + if (memcmp(s1->user_stack.data, s2->user_stack.data, + s1->user_stack.size)) { + pr_debug("Samples differ at 'user_stack'\n"); + return false; + } + } + + if (type & PERF_SAMPLE_WEIGHT) + COMP(weight); + + if (type & PERF_SAMPLE_DATA_SRC) + COMP(data_src); + + if (type & PERF_SAMPLE_TRANSACTION) + COMP(transaction); + + if (type & PERF_SAMPLE_REGS_INTR) { + size_t sz = hweight_long(s1->intr_regs.mask) * sizeof(u64); + + COMP(intr_regs.mask); + COMP(intr_regs.abi); + if (s1->intr_regs.abi && + (!s1->intr_regs.regs || !s2->intr_regs.regs || + memcmp(s1->intr_regs.regs, s2->intr_regs.regs, sz))) { + pr_debug("Samples differ at 'intr_regs'\n"); + return false; + } + } + + if (type & PERF_SAMPLE_PHYS_ADDR) + COMP(phys_addr); + + if (type & PERF_SAMPLE_CGROUP) + COMP(cgroup); + + if (type & PERF_SAMPLE_AUX) { + COMP(aux_sample.size); + if (memcmp(s1->aux_sample.data, s2->aux_sample.data, + s1->aux_sample.size)) { + pr_debug("Samples differ at 'aux_sample'\n"); + return false; + } + } + + return true; +} + +static int do_test(u64 sample_type, u64 sample_regs, u64 read_format) +{ + struct evsel evsel = { + .needs_swap = false, + .core = { + . attr = { + .sample_type = sample_type, + .read_format = read_format, + }, + }, + }; + union perf_event *event; + union { + struct ip_callchain callchain; + u64 data[64]; + } callchain = { + /* 3 ips */ + .data = {3, 201, 202, 203}, + }; + union { + struct branch_stack branch_stack; + u64 data[64]; + } branch_stack = { + /* 1 branch_entry */ + .data = {1, -1ULL, 211, 212, 213}, + }; + u64 regs[64]; + const u32 raw_data[] = {0x12345678, 0x0a0b0c0d, 0x11020304, 0x05060708, 0 }; + const u64 data[] = {0x2211443366558877ULL, 0, 0xaabbccddeeff4321ULL}; + const u64 aux_data[] = {0xa55a, 0, 0xeeddee, 0x0282028202820282}; + struct perf_sample sample = { + .ip = 101, + .pid = 102, + .tid = 103, + .time = 104, + .addr = 105, + .id = 106, + .stream_id = 107, + .period = 108, + .weight = 109, + .cpu = 110, + .raw_size = sizeof(raw_data), + .data_src = 111, + .transaction = 112, + .raw_data = (void *)raw_data, + .callchain = &callchain.callchain, + .no_hw_idx = false, + .branch_stack = &branch_stack.branch_stack, + .user_regs = { + .abi = PERF_SAMPLE_REGS_ABI_64, + .mask = sample_regs, + .regs = regs, + }, + .user_stack = { + .size = sizeof(data), + .data = (void *)data, + }, + .read = { + .time_enabled = 0x030a59d664fca7deULL, + .time_running = 0x011b6ae553eb98edULL, + }, + .intr_regs = { + .abi = PERF_SAMPLE_REGS_ABI_64, + .mask = sample_regs, + .regs = regs, + }, + .phys_addr = 113, + .cgroup = 114, + .aux_sample = { + .size = sizeof(aux_data), + .data = (void *)aux_data, + }, + }; + struct sample_read_value values[] = {{1, 5}, {9, 3}, {2, 7}, {6, 4},}; + struct perf_sample sample_out; + size_t i, sz, bufsz; + int err, ret = -1; + + if (sample_type & PERF_SAMPLE_REGS_USER) + evsel.core.attr.sample_regs_user = sample_regs; + + if (sample_type & PERF_SAMPLE_REGS_INTR) + evsel.core.attr.sample_regs_intr = sample_regs; + + if (sample_type & PERF_SAMPLE_BRANCH_STACK) + evsel.core.attr.branch_sample_type |= PERF_SAMPLE_BRANCH_HW_INDEX; + + for (i = 0; i < sizeof(regs); i++) + *(i + (u8 *)regs) = i & 0xfe; + + if (read_format & PERF_FORMAT_GROUP) { + sample.read.group.nr = 4; + sample.read.group.values = values; + } else { + sample.read.one.value = 0x08789faeb786aa87ULL; + sample.read.one.id = 99; + } + + sz = perf_event__sample_event_size(&sample, sample_type, read_format); + bufsz = sz + 4096; /* Add a bit for overrun checking */ + event = malloc(bufsz); + if (!event) { + pr_debug("malloc failed\n"); + return -1; + } + + memset(event, 0xff, bufsz); + event->header.type = PERF_RECORD_SAMPLE; + event->header.misc = 0; + event->header.size = sz; + + err = perf_event__synthesize_sample(event, sample_type, read_format, + &sample); + if (err) { + pr_debug("%s failed for sample_type %#"PRIx64", error %d\n", + "perf_event__synthesize_sample", sample_type, err); + goto out_free; + } + + /* The data does not contain 0xff so we use that to check the size */ + for (i = bufsz; i > 0; i--) { + if (*(i - 1 + (u8 *)event) != 0xff) + break; + } + if (i != sz) { + pr_debug("Event size mismatch: actual %zu vs expected %zu\n", + i, sz); + goto out_free; + } + + evsel.sample_size = __evsel__sample_size(sample_type); + + err = evsel__parse_sample(&evsel, event, &sample_out); + if (err) { + pr_debug("%s failed for sample_type %#"PRIx64", error %d\n", + "evsel__parse_sample", sample_type, err); + goto out_free; + } + + if (!samples_same(&sample, &sample_out, sample_type, read_format)) { + pr_debug("parsing failed for sample_type %#"PRIx64"\n", + sample_type); + goto out_free; + } + + ret = 0; +out_free: + free(event); + if (ret && read_format) + pr_debug("read_format %#"PRIx64"\n", read_format); + return ret; +} + +/** + * test__sample_parsing - test sample parsing. + * + * This function implements a test that synthesizes a sample event, parses it + * and then checks that the parsed sample matches the original sample. The test + * checks sample format bits separately and together. If the test passes %0 is + * returned, otherwise %-1 is returned. + */ +int test__sample_parsing(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + const u64 rf[] = {4, 5, 6, 7, 12, 13, 14, 15}; + u64 sample_type; + u64 sample_regs; + size_t i; + int err; + + /* + * Fail the test if it has not been updated when new sample format bits + * were added. Please actually update the test rather than just change + * the condition below. + */ + if (PERF_SAMPLE_MAX > PERF_SAMPLE_CGROUP << 1) { + pr_debug("sample format has changed, some new PERF_SAMPLE_ bit was introduced - test needs updating\n"); + return -1; + } + + /* Test each sample format bit separately */ + for (sample_type = 1; sample_type != PERF_SAMPLE_MAX; + sample_type <<= 1) { + /* Test read_format variations */ + if (sample_type == PERF_SAMPLE_READ) { + for (i = 0; i < ARRAY_SIZE(rf); i++) { + err = do_test(sample_type, 0, rf[i]); + if (err) + return err; + } + continue; + } + sample_regs = 0; + + if (sample_type == PERF_SAMPLE_REGS_USER) + sample_regs = 0x3fff; + + if (sample_type == PERF_SAMPLE_REGS_INTR) + sample_regs = 0xff0fff; + + err = do_test(sample_type, sample_regs, 0); + if (err) + return err; + } + + /* Test all sample format bits together */ + sample_type = PERF_SAMPLE_MAX - 1; + sample_regs = 0x3fff; /* shared yb intr and user regs */ + for (i = 0; i < ARRAY_SIZE(rf); i++) { + err = do_test(sample_type, sample_regs, rf[i]); + if (err) + return err; + } + + return 0; +} diff --git a/tools/perf/tests/sdt.c b/tools/perf/tests/sdt.c new file mode 100644 index 000000000..ed76c693f --- /dev/null +++ b/tools/perf/tests/sdt.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/epoll.h> +#include <util/symbol.h> +#include <linux/filter.h> +#include "tests.h" +#include "debug.h" +#include "probe-file.h" +#include "build-id.h" +#include "util.h" + +/* To test SDT event, we need libelf support to scan elf binary */ +#if defined(HAVE_SDT_EVENT) && defined(HAVE_LIBELF_SUPPORT) + +#include <sys/sdt.h> + +static int target_function(void) +{ + DTRACE_PROBE(perf, test_target); + return TEST_OK; +} + +/* Copied from builtin-buildid-cache.c */ +static int build_id_cache__add_file(const char *filename) +{ + char sbuild_id[SBUILD_ID_SIZE]; + struct build_id bid; + int err; + + err = filename__read_build_id(filename, &bid); + if (err < 0) { + pr_debug("Failed to read build id of %s\n", filename); + return err; + } + + build_id__sprintf(&bid, sbuild_id); + err = build_id_cache__add_s(sbuild_id, filename, NULL, false, false); + if (err < 0) + pr_debug("Failed to add build id cache of %s\n", filename); + return err; +} + +static char *get_self_path(void) +{ + char *buf = calloc(PATH_MAX, sizeof(char)); + + if (buf && readlink("/proc/self/exe", buf, PATH_MAX - 1) < 0) { + pr_debug("Failed to get correct path of perf\n"); + free(buf); + return NULL; + } + return buf; +} + +static int search_cached_probe(const char *target, + const char *group, const char *event) +{ + struct probe_cache *cache = probe_cache__new(target, NULL); + int ret = 0; + + if (!cache) { + pr_debug("Failed to open probe cache of %s\n", target); + return -EINVAL; + } + + if (!probe_cache__find_by_name(cache, group, event)) { + pr_debug("Failed to find %s:%s in the cache\n", group, event); + ret = -ENOENT; + } + probe_cache__delete(cache); + + return ret; +} + +int test__sdt_event(struct test *test __maybe_unused, int subtests __maybe_unused) +{ + int ret = TEST_FAIL; + char __tempdir[] = "./test-buildid-XXXXXX"; + char *tempdir = NULL, *myself = get_self_path(); + + if (myself == NULL || mkdtemp(__tempdir) == NULL) { + pr_debug("Failed to make a tempdir for build-id cache\n"); + goto error; + } + /* Note that buildid_dir must be an absolute path */ + tempdir = realpath(__tempdir, NULL); + if (tempdir == NULL) + goto error_rmdir; + + /* At first, scan itself */ + set_buildid_dir(tempdir); + if (build_id_cache__add_file(myself) < 0) + goto error_rmdir; + + /* Open a cache and make sure the SDT is stored */ + if (search_cached_probe(myself, "sdt_perf", "test_target") < 0) + goto error_rmdir; + + /* TBD: probing on the SDT event and collect logs */ + + /* Call the target and get an event */ + ret = target_function(); + +error_rmdir: + /* Cleanup temporary buildid dir */ + rm_rf(__tempdir); +error: + free(tempdir); + free(myself); + return ret; +} +#else +int test__sdt_event(struct test *test __maybe_unused, int subtests __maybe_unused) +{ + pr_debug("Skip SDT event test because SDT support is not compiled\n"); + return TEST_SKIP; +} +#endif diff --git a/tools/perf/tests/shell/buildid.sh b/tools/perf/tests/shell/buildid.sh new file mode 100755 index 000000000..4861a20ed --- /dev/null +++ b/tools/perf/tests/shell/buildid.sh @@ -0,0 +1,101 @@ +#!/bin/sh +# build id cache operations +# SPDX-License-Identifier: GPL-2.0 + +# skip if there's no readelf +if ! [ -x "$(command -v readelf)" ]; then + echo "failed: no readelf, install binutils" + exit 2 +fi + +# skip if there's no compiler +if ! [ -x "$(command -v cc)" ]; then + echo "failed: no compiler, install gcc" + exit 2 +fi + +ex_md5=$(mktemp /tmp/perf.ex.MD5.XXX) +ex_sha1=$(mktemp /tmp/perf.ex.SHA1.XXX) + +echo 'int main(void) { return 0; }' | cc -Wl,--build-id=sha1 -o ${ex_sha1} -x c - +echo 'int main(void) { return 0; }' | cc -Wl,--build-id=md5 -o ${ex_md5} -x c - + +echo "test binaries: ${ex_sha1} ${ex_md5}" + +check() +{ + id=`readelf -n ${1} 2>/dev/null | grep 'Build ID' | awk '{print $3}'` + + echo "build id: ${id}" + + link=${build_id_dir}/.build-id/${id:0:2}/${id:2} + echo "link: ${link}" + + if [ ! -h $link ]; then + echo "failed: link ${link} does not exist" + exit 1 + fi + + file=${build_id_dir}/.build-id/${id:0:2}/`readlink ${link}`/elf + echo "file: ${file}" + + if [ ! -x $file ]; then + echo "failed: file ${file} does not exist" + exit 1 + fi + + diff ${file} ${1} + if [ $? -ne 0 ]; then + echo "failed: ${file} do not match" + exit 1 + fi + + echo "OK for ${1}" +} + +test_add() +{ + build_id_dir=$(mktemp -d /tmp/perf.debug.XXX) + perf="perf --buildid-dir ${build_id_dir}" + + ${perf} buildid-cache -v -a ${1} + if [ $? -ne 0 ]; then + echo "failed: add ${1} to build id cache" + exit 1 + fi + + check ${1} + + rm -rf ${build_id_dir} +} + +test_record() +{ + data=$(mktemp /tmp/perf.data.XXX) + build_id_dir=$(mktemp -d /tmp/perf.debug.XXX) + perf="perf --buildid-dir ${build_id_dir}" + + ${perf} record --buildid-all -o ${data} ${1} + if [ $? -ne 0 ]; then + echo "failed: record ${1}" + exit 1 + fi + + check ${1} + + rm -rf ${build_id_dir} + rm -rf ${data} +} + +# add binaries manual via perf buildid-cache -a +test_add ${ex_sha1} +test_add ${ex_md5} + +# add binaries via perf record post processing +test_record ${ex_sha1} +test_record ${ex_md5} + +# cleanup +rm ${ex_sha1} ${ex_md5} + +exit ${err} diff --git a/tools/perf/tests/shell/lib/probe.sh b/tools/perf/tests/shell/lib/probe.sh new file mode 100644 index 000000000..51e3f60ba --- /dev/null +++ b/tools/perf/tests/shell/lib/probe.sh @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0 +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +skip_if_no_perf_probe() { + perf probe 2>&1 | grep -q 'is not a perf-command' && return 2 + return 0 +} + +skip_if_no_perf_trace() { + perf trace -h 2>&1 | grep -q -e 'is not a perf-command' -e 'trace command not available' && return 2 + return 0 +} diff --git a/tools/perf/tests/shell/lib/probe_vfs_getname.sh b/tools/perf/tests/shell/lib/probe_vfs_getname.sh new file mode 100644 index 000000000..c2cc42daf --- /dev/null +++ b/tools/perf/tests/shell/lib/probe_vfs_getname.sh @@ -0,0 +1,24 @@ +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +perf probe -l 2>&1 | grep -q probe:vfs_getname +had_vfs_getname=$? + +cleanup_probe_vfs_getname() { + if [ $had_vfs_getname -eq 1 ] ; then + perf probe -q -d probe:vfs_getname* + fi +} + +add_probe_vfs_getname() { + local verbose=$1 + if [ $had_vfs_getname -eq 1 ] ; then + line=$(perf probe -L getname_flags 2>&1 | egrep 'result.*=.*filename;' | sed -r 's/[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*/\1/') + perf probe -q "vfs_getname=getname_flags:${line} pathname=result->name:string" || \ + perf probe $verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring" + fi +} + +skip_if_no_debuginfo() { + add_probe_vfs_getname -v 2>&1 | egrep -q "^(Failed to find the path for kernel|Debuginfo-analysis is not supported)" && return 2 + return 1 +} diff --git a/tools/perf/tests/shell/probe_vfs_getname.sh b/tools/perf/tests/shell/probe_vfs_getname.sh new file mode 100755 index 000000000..5d1b63d3f --- /dev/null +++ b/tools/perf/tests/shell/probe_vfs_getname.sh @@ -0,0 +1,16 @@ +#!/bin/sh +# Add vfs_getname probe to get syscall args filenames + +# SPDX-License-Identifier: GPL-2.0 +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +. $(dirname $0)/lib/probe.sh + +skip_if_no_perf_probe || exit 2 + +. $(dirname $0)/lib/probe_vfs_getname.sh + +add_probe_vfs_getname || skip_if_no_debuginfo +err=$? +cleanup_probe_vfs_getname +exit $err diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh new file mode 100755 index 000000000..f12a4e217 --- /dev/null +++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh @@ -0,0 +1,96 @@ +#!/bin/sh +# probe libc's inet_pton & backtrace it with ping + +# Installs a probe on libc's inet_pton function, that will use uprobes, +# then use 'perf trace' on a ping to localhost asking for just one packet +# with the a backtrace 3 levels deep, check that it is what we expect. +# This needs no debuginfo package, all is done using the libc ELF symtab +# and the CFI info in the binaries. + +# SPDX-License-Identifier: GPL-2.0 +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +. $(dirname $0)/lib/probe.sh + +libc=$(grep -w libc /proc/self/maps | head -1 | sed -r 's/.*[[:space:]](\/.*)/\1/g') +nm -Dg $libc 2>/dev/null | fgrep -q inet_pton || exit 254 + +event_pattern='probe_libc:inet_pton(\_[[:digit:]]+)?' + +add_libc_inet_pton_event() { + + event_name=$(perf probe -f -x $libc -a inet_pton 2>&1 | tail -n +2 | head -n -5 | \ + grep -P -o "$event_pattern(?=[[:space:]]\(on inet_pton in $libc\))") + + if [ $? -ne 0 -o -z "$event_name" ] ; then + printf "FAIL: could not add event\n" + return 1 + fi +} + +trace_libc_inet_pton_backtrace() { + + expected=`mktemp -u /tmp/expected.XXX` + + echo "ping[][0-9 \.:]+$event_name: \([[:xdigit:]]+\)" > $expected + echo ".*inet_pton\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$" >> $expected + case "$(uname -m)" in + s390x) + eventattr='call-graph=dwarf,max-stack=4' + echo "gaih_inet.*\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$" >> $expected + echo "(__GI_)?getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$" >> $expected + echo "main\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$" >> $expected + ;; + ppc64|ppc64le) + eventattr='max-stack=4' + echo "gaih_inet.*\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected + echo "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected + echo ".*(\+0x[[:xdigit:]]+|\[unknown\])[[:space:]]\(.*/bin/ping.*\)$" >> $expected + ;; + *) + eventattr='max-stack=3' + echo "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected + echo ".*(\+0x[[:xdigit:]]+|\[unknown\])[[:space:]]\(.*/bin/ping.*\)$" >> $expected + ;; + esac + + perf_data=`mktemp -u /tmp/perf.data.XXX` + perf_script=`mktemp -u /tmp/perf.script.XXX` + perf record -e $event_name/$eventattr/ -o $perf_data ping -6 -c 1 ::1 > /dev/null 2>&1 + perf script -i $perf_data > $perf_script + + exec 3<$perf_script + exec 4<$expected + while read line <&3 && read -r pattern <&4; do + [ -z "$pattern" ] && break + echo $line + echo "$line" | egrep -q "$pattern" + if [ $? -ne 0 ] ; then + printf "FAIL: expected backtrace entry \"%s\" got \"%s\"\n" "$pattern" "$line" + return 1 + fi + done + + # If any statements are executed from this point onwards, + # the exit code of the last among these will be reflected + # in err below. If the exit code is 0, the test will pass + # even if the perf script output does not match. +} + +delete_libc_inet_pton_event() { + + if [ -n "$event_name" ] ; then + perf probe -q -d $event_name + fi +} + +# Check for IPv6 interface existence +ip a sh lo | fgrep -q inet6 || exit 2 + +skip_if_no_perf_probe && \ +add_libc_inet_pton_event && \ +trace_libc_inet_pton_backtrace +err=$? +rm -f ${perf_data} ${perf_script} ${expected} +delete_libc_inet_pton_event +exit $err diff --git a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh new file mode 100755 index 000000000..bf9e729b3 --- /dev/null +++ b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh @@ -0,0 +1,43 @@ +#!/bin/sh +# Use vfs_getname probe to get syscall args filenames + +# Uses the 'perf test shell' library to add probe:vfs_getname to the system +# then use it with 'perf record' using 'touch' to write to a temp file, then +# checks that that was captured by the vfs_getname probe in the generated +# perf.data file, with the temp file name as the pathname argument. + +# SPDX-License-Identifier: GPL-2.0 +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +. $(dirname $0)/lib/probe.sh + +skip_if_no_perf_probe || exit 2 + +. $(dirname $0)/lib/probe_vfs_getname.sh + +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) +file=$(mktemp /tmp/temporary_file.XXXXX) + +record_open_file() { + echo "Recording open file:" + perf record -o ${perfdata} -e probe:vfs_getname\* touch $file +} + +perf_script_filenames() { + echo "Looking at perf.data file for vfs_getname records for the file we touched:" + perf script -i ${perfdata} | \ + egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname[_0-9]*: +\([[:xdigit:]]+\) +pathname=\"${file}\"" +} + +add_probe_vfs_getname || skip_if_no_debuginfo +err=$? +if [ $err -ne 0 ] ; then + exit $err +fi + +record_open_file && perf_script_filenames +err=$? +rm -f ${perfdata} +rm -f ${file} +cleanup_probe_vfs_getname +exit $err diff --git a/tools/perf/tests/shell/record+zstd_comp_decomp.sh b/tools/perf/tests/shell/record+zstd_comp_decomp.sh new file mode 100755 index 000000000..c62af8071 --- /dev/null +++ b/tools/perf/tests/shell/record+zstd_comp_decomp.sh @@ -0,0 +1,37 @@ +#!/bin/sh +# Zstd perf.data compression/decompression + +# SPDX-License-Identifier: GPL-2.0 + +trace_file=$(mktemp /tmp/perf.data.XXX) +perf_tool=perf + +skip_if_no_z_record() { + $perf_tool record -h 2>&1 | grep -q '\-z, \-\-compression\-level' +} + +collect_z_record() { + echo "Collecting compressed record file:" + [ "$(uname -m)" != s390x ] && gflag='-g' + $perf_tool record -o $trace_file $gflag -z -F 5000 -- \ + dd count=500 if=/dev/urandom of=/dev/null +} + +check_compressed_stats() { + echo "Checking compressed events stats:" + $perf_tool report -i $trace_file --header --stats | \ + grep -E "(# compressed : Zstd,)|(COMPRESSED events:)" +} + +check_compressed_output() { + $perf_tool inject -i $trace_file -o $trace_file.decomp && + $perf_tool report -i $trace_file --stdio | head -n -3 > $trace_file.comp.output && + $perf_tool report -i $trace_file.decomp --stdio | head -n -3 > $trace_file.decomp.output && + diff $trace_file.comp.output $trace_file.decomp.output +} + +skip_if_no_z_record || exit 2 +collect_z_record && check_compressed_stats && check_compressed_output +err=$? +rm -f $trace_file* +exit $err diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh new file mode 100755 index 000000000..18fde2f17 --- /dev/null +++ b/tools/perf/tests/shell/test_arm_coresight.sh @@ -0,0 +1,183 @@ +#!/bin/sh +# Check Arm CoreSight trace data recording and synthesized samples + +# Uses the 'perf record' to record trace data with Arm CoreSight sinks; +# then verify if there have any branch samples and instruction samples +# are generated by CoreSight with 'perf script' and 'perf report' +# commands. + +# SPDX-License-Identifier: GPL-2.0 +# Leo Yan <leo.yan@linaro.org>, 2020 + +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) +file=$(mktemp /tmp/temporary_file.XXXXX) + +skip_if_no_cs_etm_event() { + perf list | grep -q 'cs_etm//' && return 0 + + # cs_etm event doesn't exist + return 2 +} + +skip_if_no_cs_etm_event || exit 2 + +cleanup_files() +{ + rm -f ${perfdata} + rm -f ${file} +} + +trap cleanup_files exit + +record_touch_file() { + echo "Recording trace (only user mode) with path: CPU$2 => $1" + rm -f $file + perf record -o ${perfdata} -e cs_etm/@$1/u --per-thread \ + -- taskset -c $2 touch $file +} + +perf_script_branch_samples() { + echo "Looking at perf.data file for dumping branch samples:" + + # Below is an example of the branch samples dumping: + # touch 6512 1 branches:u: ffffb220824c strcmp+0xc (/lib/aarch64-linux-gnu/ld-2.27.so) + # touch 6512 1 branches:u: ffffb22082e0 strcmp+0xa0 (/lib/aarch64-linux-gnu/ld-2.27.so) + # touch 6512 1 branches:u: ffffb2208320 strcmp+0xe0 (/lib/aarch64-linux-gnu/ld-2.27.so) + perf script -F,-time -i ${perfdata} | \ + egrep " +$1 +[0-9]+ .* +branches:(.*:)? +" +} + +perf_report_branch_samples() { + echo "Looking at perf.data file for reporting branch samples:" + + # Below is an example of the branch samples reporting: + # 73.04% 73.04% touch libc-2.27.so [.] _dl_addr + # 7.71% 7.71% touch libc-2.27.so [.] getenv + # 2.59% 2.59% touch ld-2.27.so [.] strcmp + perf report --stdio -i ${perfdata} | \ + egrep " +[0-9]+\.[0-9]+% +[0-9]+\.[0-9]+% +$1 " +} + +perf_report_instruction_samples() { + echo "Looking at perf.data file for instruction samples:" + + # Below is an example of the instruction samples reporting: + # 68.12% touch libc-2.27.so [.] _dl_addr + # 5.80% touch libc-2.27.so [.] getenv + # 4.35% touch ld-2.27.so [.] _dl_fixup + perf report --itrace=i1000i --stdio -i ${perfdata} | \ + egrep " +[0-9]+\.[0-9]+% +$1" +} + +is_device_sink() { + # If the node of "enable_sink" is existed under the device path, this + # means the device is a sink device. Need to exclude 'tpiu' since it + # cannot support perf PMU. + echo "$1" | egrep -q -v "tpiu" + + if [ $? -eq 0 -a -e "$1/enable_sink" ]; then + + pmu_dev="/sys/bus/event_source/devices/cs_etm/sinks/$2" + + # Warn if the device is not supported by PMU + if ! [ -f $pmu_dev ]; then + echo "PMU doesn't support $pmu_dev" + fi + + return 0 + fi + + # Otherwise, it's not a sink device + return 1 +} + +arm_cs_iterate_devices() { + for dev in $1/connections/out\:*; do + + # Skip testing if it's not a directory + ! [ -d $dev ] && continue; + + # Read out its symbol link file name + path=`readlink -f $dev` + + # Extract device name from path, e.g. + # path = '/sys/devices/platform/20010000.etf/tmc_etf0' + # `> device_name = 'tmc_etf0' + device_name=$(basename $path) + + if is_device_sink $path $device_name; then + + record_touch_file $device_name $2 && + perf_script_branch_samples touch && + perf_report_branch_samples touch && + perf_report_instruction_samples touch + + err=$? + + # Exit when find failure + [ $err != 0 ] && exit $err + fi + + arm_cs_iterate_devices $dev $2 + done +} + +arm_cs_etm_traverse_path_test() { + # Iterate for every ETM device + for dev in /sys/bus/coresight/devices/etm*; do + + # Find the ETM device belonging to which CPU + cpu=`cat $dev/cpu` + + echo $dev + echo $cpu + + # Use depth-first search (DFS) to iterate outputs + arm_cs_iterate_devices $dev $cpu + done +} + +arm_cs_etm_system_wide_test() { + echo "Recording trace with system wide mode" + perf record -o ${perfdata} -e cs_etm// -a -- ls + + perf_script_branch_samples perf && + perf_report_branch_samples perf && + perf_report_instruction_samples perf + + err=$? + + # Exit when find failure + [ $err != 0 ] && exit $err +} + +arm_cs_etm_snapshot_test() { + echo "Recording trace with snapshot mode" + perf record -o ${perfdata} -e cs_etm// -S \ + -- dd if=/dev/zero of=/dev/null & + PERFPID=$! + + # Wait for perf program + sleep 1 + + # Send signal to snapshot trace data + kill -USR2 $PERFPID + + # Stop perf program + kill $PERFPID + wait $PERFPID + + perf_script_branch_samples dd && + perf_report_branch_samples dd && + perf_report_instruction_samples dd + + err=$? + + # Exit when find failure + [ $err != 0 ] && exit $err +} + +arm_cs_etm_traverse_path_test +arm_cs_etm_system_wide_test +arm_cs_etm_snapshot_test +exit 0 diff --git a/tools/perf/tests/shell/test_uprobe_from_different_cu.sh b/tools/perf/tests/shell/test_uprobe_from_different_cu.sh new file mode 100644 index 000000000..319f36ebb --- /dev/null +++ b/tools/perf/tests/shell/test_uprobe_from_different_cu.sh @@ -0,0 +1,83 @@ +#!/bin/bash +# test perf probe of function from different CU +# SPDX-License-Identifier: GPL-2.0 + +set -e + +# skip if there's no gcc +if ! [ -x "$(command -v gcc)" ]; then + echo "failed: no gcc compiler" + exit 2 +fi + +temp_dir=$(mktemp -d /tmp/perf-uprobe-different-cu-sh.XXXXXXXXXX) + +cleanup() +{ + trap - EXIT TERM INT + if [[ "${temp_dir}" =~ ^/tmp/perf-uprobe-different-cu-sh.*$ ]]; then + echo "--- Cleaning up ---" + perf probe -x ${temp_dir}/testfile -d foo || true + rm -f "${temp_dir}/"* + rmdir "${temp_dir}" + fi +} + +trap_cleanup() +{ + cleanup + exit 1 +} + +trap trap_cleanup EXIT TERM INT + +cat > ${temp_dir}/testfile-foo.h << EOF +struct t +{ + int *p; + int c; +}; + +extern int foo (int i, struct t *t); +EOF + +cat > ${temp_dir}/testfile-foo.c << EOF +#include "testfile-foo.h" + +int +foo (int i, struct t *t) +{ + int j, res = 0; + for (j = 0; j < i && j < t->c; j++) + res += t->p[j]; + + return res; +} +EOF + +cat > ${temp_dir}/testfile-main.c << EOF +#include "testfile-foo.h" + +static struct t g; + +int +main (int argc, char **argv) +{ + int i; + int j[argc]; + g.c = argc; + g.p = j; + for (i = 0; i < argc; i++) + j[i] = (int) argv[i][0]; + return foo (3, &g); +} +EOF + +gcc -g -Og -flto -c ${temp_dir}/testfile-foo.c -o ${temp_dir}/testfile-foo.o +gcc -g -Og -c ${temp_dir}/testfile-main.c -o ${temp_dir}/testfile-main.o +gcc -g -Og -o ${temp_dir}/testfile ${temp_dir}/testfile-foo.o ${temp_dir}/testfile-main.o + +perf probe -x ${temp_dir}/testfile --funcs foo +perf probe -x ${temp_dir}/testfile foo + +cleanup diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh new file mode 100755 index 000000000..11cc2af13 --- /dev/null +++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh @@ -0,0 +1,43 @@ +#!/bin/sh +# Check open filename arg using perf trace + vfs_getname + +# Uses the 'perf test shell' library to add probe:vfs_getname to the system +# then use it with 'perf trace' using 'touch' to write to a temp file, then +# checks that that was captured by the vfs_getname was used by 'perf trace', +# that already handles "probe:vfs_getname" if present, and used in the +# "open" syscall "filename" argument beautifier. + +# SPDX-License-Identifier: GPL-2.0 +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +. $(dirname $0)/lib/probe.sh + +skip_if_no_perf_probe || exit 2 +skip_if_no_perf_trace || exit 2 + +. $(dirname $0)/lib/probe_vfs_getname.sh + +file=$(mktemp /tmp/temporary_file.XXXXX) + +trace_open_vfs_getname() { + evts=$(echo $(perf list syscalls:sys_enter_open* 2>&1 | egrep 'open(at)? ' | sed -r 's/.*sys_enter_([a-z]+) +\[.*$/\1/') | sed 's/ /,/') + perf trace -e $evts touch $file 2>&1 | \ + egrep " +[0-9]+\.[0-9]+ +\( +[0-9]+\.[0-9]+ ms\): +touch\/[0-9]+ open(at)?\((dfd: +CWD, +)?filename: +${file}, +flags: CREAT\|NOCTTY\|NONBLOCK\|WRONLY, +mode: +IRUGO\|IWUGO\) += +[0-9]+$" +} + + +add_probe_vfs_getname || skip_if_no_debuginfo +err=$? +if [ $err -ne 0 ] ; then + exit $err +fi + +# Do not use whatever ~/.perfconfig file, it may change the output +# via trace.{show_timestamp,show_prefix,etc} +export PERF_CONFIG=/dev/null + +trace_open_vfs_getname +err=$? +rm -f ${file} +cleanup_probe_vfs_getname +exit $err diff --git a/tools/perf/tests/stat.c b/tools/perf/tests/stat.c new file mode 100644 index 000000000..c1911501c --- /dev/null +++ b/tools/perf/tests/stat.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include "event.h" +#include "tests.h" +#include "stat.h" +#include "counts.h" +#include "debug.h" +#include "util/synthetic-events.h" + +static bool has_term(struct perf_record_stat_config *config, + u64 tag, u64 val) +{ + unsigned i; + + for (i = 0; i < config->nr; i++) { + if ((config->data[i].tag == tag) && + (config->data[i].val == val)) + return true; + } + + return false; +} + +static int process_stat_config_event(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_stat_config *config = &event->stat_config; + struct perf_stat_config stat_config; + +#define HAS(term, val) \ + has_term(config, PERF_STAT_CONFIG_TERM__##term, val) + + TEST_ASSERT_VAL("wrong nr", config->nr == PERF_STAT_CONFIG_TERM__MAX); + TEST_ASSERT_VAL("wrong aggr_mode", HAS(AGGR_MODE, AGGR_CORE)); + TEST_ASSERT_VAL("wrong scale", HAS(SCALE, 1)); + TEST_ASSERT_VAL("wrong interval", HAS(INTERVAL, 1)); + +#undef HAS + + perf_event__read_stat_config(&stat_config, config); + + TEST_ASSERT_VAL("wrong aggr_mode", stat_config.aggr_mode == AGGR_CORE); + TEST_ASSERT_VAL("wrong scale", stat_config.scale == 1); + TEST_ASSERT_VAL("wrong interval", stat_config.interval == 1); + return 0; +} + +int test__synthesize_stat_config(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_stat_config stat_config = { + .aggr_mode = AGGR_CORE, + .scale = 1, + .interval = 1, + }; + + TEST_ASSERT_VAL("failed to synthesize stat_config", + !perf_event__synthesize_stat_config(NULL, &stat_config, process_stat_config_event, NULL)); + + return 0; +} + +static int process_stat_event(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_stat *st = &event->stat; + + TEST_ASSERT_VAL("wrong cpu", st->cpu == 1); + TEST_ASSERT_VAL("wrong thread", st->thread == 2); + TEST_ASSERT_VAL("wrong id", st->id == 3); + TEST_ASSERT_VAL("wrong val", st->val == 100); + TEST_ASSERT_VAL("wrong run", st->ena == 200); + TEST_ASSERT_VAL("wrong ena", st->run == 300); + return 0; +} + +int test__synthesize_stat(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_counts_values count; + + count.val = 100; + count.ena = 200; + count.run = 300; + + TEST_ASSERT_VAL("failed to synthesize stat_config", + !perf_event__synthesize_stat(NULL, 1, 2, 3, &count, process_stat_event, NULL)); + + return 0; +} + +static int process_stat_round_event(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_stat_round *stat_round = &event->stat_round; + + TEST_ASSERT_VAL("wrong time", stat_round->time == 0xdeadbeef); + TEST_ASSERT_VAL("wrong type", stat_round->type == PERF_STAT_ROUND_TYPE__INTERVAL); + return 0; +} + +int test__synthesize_stat_round(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + TEST_ASSERT_VAL("failed to synthesize stat_config", + !perf_event__synthesize_stat_round(NULL, 0xdeadbeef, PERF_STAT_ROUND_TYPE__INTERVAL, + process_stat_round_event, NULL)); + + return 0; +} diff --git a/tools/perf/tests/sw-clock.c b/tools/perf/tests/sw-clock.c new file mode 100644 index 000000000..4b9b73197 --- /dev/null +++ b/tools/perf/tests/sw-clock.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <errno.h> +#include <inttypes.h> +#include <unistd.h> +#include <stdlib.h> +#include <signal.h> +#include <sys/mman.h> +#include <linux/string.h> + +#include "tests.h" +#include "util/debug.h" +#include "util/evsel.h" +#include "util/evlist.h" +#include "util/cpumap.h" +#include "util/mmap.h" +#include "util/thread_map.h" +#include <perf/evlist.h> +#include <perf/mmap.h> + +#define NR_LOOPS 10000000 + +/* + * This test will open software clock events (cpu-clock, task-clock) + * then check their frequency -> period conversion has no artifact of + * setting period to 1 forcefully. + */ +static int __test__sw_clock_freq(enum perf_sw_ids clock_id) +{ + int i, err = -1; + volatile int tmp = 0; + u64 total_periods = 0; + int nr_samples = 0; + char sbuf[STRERR_BUFSIZE]; + union perf_event *event; + struct evsel *evsel; + struct evlist *evlist; + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .config = clock_id, + .sample_type = PERF_SAMPLE_PERIOD, + .exclude_kernel = 1, + .disabled = 1, + .freq = 1, + }; + struct perf_cpu_map *cpus; + struct perf_thread_map *threads; + struct mmap *md; + + attr.sample_freq = 500; + + evlist = evlist__new(); + if (evlist == NULL) { + pr_debug("evlist__new\n"); + return -1; + } + + evsel = evsel__new(&attr); + if (evsel == NULL) { + pr_debug("evsel__new\n"); + goto out_delete_evlist; + } + evlist__add(evlist, evsel); + + cpus = perf_cpu_map__dummy_new(); + threads = thread_map__new_by_tid(getpid()); + if (!cpus || !threads) { + err = -ENOMEM; + pr_debug("Not enough memory to create thread/cpu maps\n"); + goto out_free_maps; + } + + perf_evlist__set_maps(&evlist->core, cpus, threads); + + cpus = NULL; + threads = NULL; + + if (evlist__open(evlist)) { + const char *knob = "/proc/sys/kernel/perf_event_max_sample_rate"; + + err = -errno; + pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n", + str_error_r(errno, sbuf, sizeof(sbuf)), + knob, (u64)attr.sample_freq); + goto out_delete_evlist; + } + + err = evlist__mmap(evlist, 128); + if (err < 0) { + pr_debug("failed to mmap event: %d (%s)\n", errno, + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + evlist__enable(evlist); + + /* collect samples */ + for (i = 0; i < NR_LOOPS; i++) + tmp++; + + evlist__disable(evlist); + + md = &evlist->mmap[0]; + if (perf_mmap__read_init(&md->core) < 0) + goto out_init; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + struct perf_sample sample; + + if (event->header.type != PERF_RECORD_SAMPLE) + goto next_event; + + err = perf_evlist__parse_sample(evlist, event, &sample); + if (err < 0) { + pr_debug("Error during parse sample\n"); + goto out_delete_evlist; + } + + total_periods += sample.period; + nr_samples++; +next_event: + perf_mmap__consume(&md->core); + } + perf_mmap__read_done(&md->core); + +out_init: + if ((u64) nr_samples == total_periods) { + pr_debug("All (%d) samples have period value of 1!\n", + nr_samples); + err = -1; + } + +out_free_maps: + perf_cpu_map__put(cpus); + perf_thread_map__put(threads); +out_delete_evlist: + evlist__delete(evlist); + return err; +} + +int test__sw_clock_freq(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int ret; + + ret = __test__sw_clock_freq(PERF_COUNT_SW_CPU_CLOCK); + if (!ret) + ret = __test__sw_clock_freq(PERF_COUNT_SW_TASK_CLOCK); + + return ret; +} diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c new file mode 100644 index 000000000..db5e1f700 --- /dev/null +++ b/tools/perf/tests/switch-tracking.c @@ -0,0 +1,587 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <sys/time.h> +#include <sys/prctl.h> +#include <errno.h> +#include <limits.h> +#include <time.h> +#include <stdlib.h> +#include <linux/zalloc.h> +#include <perf/cpumap.h> +#include <perf/evlist.h> +#include <perf/mmap.h> + +#include "debug.h" +#include "parse-events.h" +#include "evlist.h" +#include "evsel.h" +#include "thread_map.h" +#include "record.h" +#include "tests.h" +#include "util/mmap.h" + +static int spin_sleep(void) +{ + struct timeval start, now, diff, maxtime; + struct timespec ts; + int err, i; + + maxtime.tv_sec = 0; + maxtime.tv_usec = 50000; + + err = gettimeofday(&start, NULL); + if (err) + return err; + + /* Spin for 50ms */ + while (1) { + for (i = 0; i < 1000; i++) + barrier(); + + err = gettimeofday(&now, NULL); + if (err) + return err; + + timersub(&now, &start, &diff); + if (timercmp(&diff, &maxtime, > /* For checkpatch */)) + break; + } + + ts.tv_nsec = 50 * 1000 * 1000; + ts.tv_sec = 0; + + /* Sleep for 50ms */ + err = nanosleep(&ts, NULL); + if (err == EINTR) + err = 0; + + return err; +} + +struct switch_tracking { + struct evsel *switch_evsel; + struct evsel *cycles_evsel; + pid_t *tids; + int nr_tids; + int comm_seen[4]; + int cycles_before_comm_1; + int cycles_between_comm_2_and_comm_3; + int cycles_after_comm_4; +}; + +static int check_comm(struct switch_tracking *switch_tracking, + union perf_event *event, const char *comm, int nr) +{ + if (event->header.type == PERF_RECORD_COMM && + (pid_t)event->comm.pid == getpid() && + (pid_t)event->comm.tid == getpid() && + strcmp(event->comm.comm, comm) == 0) { + if (switch_tracking->comm_seen[nr]) { + pr_debug("Duplicate comm event\n"); + return -1; + } + switch_tracking->comm_seen[nr] = 1; + pr_debug3("comm event: %s nr: %d\n", event->comm.comm, nr); + return 1; + } + return 0; +} + +static int check_cpu(struct switch_tracking *switch_tracking, int cpu) +{ + int i, nr = cpu + 1; + + if (cpu < 0) + return -1; + + if (!switch_tracking->tids) { + switch_tracking->tids = calloc(nr, sizeof(pid_t)); + if (!switch_tracking->tids) + return -1; + for (i = 0; i < nr; i++) + switch_tracking->tids[i] = -1; + switch_tracking->nr_tids = nr; + return 0; + } + + if (cpu >= switch_tracking->nr_tids) { + void *addr; + + addr = realloc(switch_tracking->tids, nr * sizeof(pid_t)); + if (!addr) + return -1; + switch_tracking->tids = addr; + for (i = switch_tracking->nr_tids; i < nr; i++) + switch_tracking->tids[i] = -1; + switch_tracking->nr_tids = nr; + return 0; + } + + return 0; +} + +static int process_sample_event(struct evlist *evlist, + union perf_event *event, + struct switch_tracking *switch_tracking) +{ + struct perf_sample sample; + struct evsel *evsel; + pid_t next_tid, prev_tid; + int cpu, err; + + if (perf_evlist__parse_sample(evlist, event, &sample)) { + pr_debug("perf_evlist__parse_sample failed\n"); + return -1; + } + + evsel = perf_evlist__id2evsel(evlist, sample.id); + if (evsel == switch_tracking->switch_evsel) { + next_tid = evsel__intval(evsel, &sample, "next_pid"); + prev_tid = evsel__intval(evsel, &sample, "prev_pid"); + cpu = sample.cpu; + pr_debug3("sched_switch: cpu: %d prev_tid %d next_tid %d\n", + cpu, prev_tid, next_tid); + err = check_cpu(switch_tracking, cpu); + if (err) + return err; + /* + * Check for no missing sched_switch events i.e. that the + * evsel->core.system_wide flag has worked. + */ + if (switch_tracking->tids[cpu] != -1 && + switch_tracking->tids[cpu] != prev_tid) { + pr_debug("Missing sched_switch events\n"); + return -1; + } + switch_tracking->tids[cpu] = next_tid; + } + + if (evsel == switch_tracking->cycles_evsel) { + pr_debug3("cycles event\n"); + if (!switch_tracking->comm_seen[0]) + switch_tracking->cycles_before_comm_1 = 1; + if (switch_tracking->comm_seen[1] && + !switch_tracking->comm_seen[2]) + switch_tracking->cycles_between_comm_2_and_comm_3 = 1; + if (switch_tracking->comm_seen[3]) + switch_tracking->cycles_after_comm_4 = 1; + } + + return 0; +} + +static int process_event(struct evlist *evlist, union perf_event *event, + struct switch_tracking *switch_tracking) +{ + if (event->header.type == PERF_RECORD_SAMPLE) + return process_sample_event(evlist, event, switch_tracking); + + if (event->header.type == PERF_RECORD_COMM) { + int err, done = 0; + + err = check_comm(switch_tracking, event, "Test COMM 1", 0); + if (err < 0) + return -1; + done += err; + err = check_comm(switch_tracking, event, "Test COMM 2", 1); + if (err < 0) + return -1; + done += err; + err = check_comm(switch_tracking, event, "Test COMM 3", 2); + if (err < 0) + return -1; + done += err; + err = check_comm(switch_tracking, event, "Test COMM 4", 3); + if (err < 0) + return -1; + done += err; + if (done != 1) { + pr_debug("Unexpected comm event\n"); + return -1; + } + } + + return 0; +} + +struct event_node { + struct list_head list; + union perf_event *event; + u64 event_time; +}; + +static int add_event(struct evlist *evlist, struct list_head *events, + union perf_event *event) +{ + struct perf_sample sample; + struct event_node *node; + + node = malloc(sizeof(struct event_node)); + if (!node) { + pr_debug("malloc failed\n"); + return -1; + } + node->event = event; + list_add(&node->list, events); + + if (perf_evlist__parse_sample(evlist, event, &sample)) { + pr_debug("perf_evlist__parse_sample failed\n"); + return -1; + } + + if (!sample.time) { + pr_debug("event with no time\n"); + return -1; + } + + node->event_time = sample.time; + + return 0; +} + +static void free_event_nodes(struct list_head *events) +{ + struct event_node *node; + + while (!list_empty(events)) { + node = list_entry(events->next, struct event_node, list); + list_del_init(&node->list); + free(node); + } +} + +static int compar(const void *a, const void *b) +{ + const struct event_node *nodea = a; + const struct event_node *nodeb = b; + s64 cmp = nodea->event_time - nodeb->event_time; + + return cmp; +} + +static int process_events(struct evlist *evlist, + struct switch_tracking *switch_tracking) +{ + union perf_event *event; + unsigned pos, cnt = 0; + LIST_HEAD(events); + struct event_node *events_array, *node; + struct mmap *md; + int i, ret; + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + cnt += 1; + ret = add_event(evlist, &events, event); + perf_mmap__consume(&md->core); + if (ret < 0) + goto out_free_nodes; + } + perf_mmap__read_done(&md->core); + } + + events_array = calloc(cnt, sizeof(struct event_node)); + if (!events_array) { + pr_debug("calloc failed\n"); + ret = -1; + goto out_free_nodes; + } + + pos = 0; + list_for_each_entry(node, &events, list) + events_array[pos++] = *node; + + qsort(events_array, cnt, sizeof(struct event_node), compar); + + for (pos = 0; pos < cnt; pos++) { + ret = process_event(evlist, events_array[pos].event, + switch_tracking); + if (ret < 0) + goto out_free; + } + + ret = 0; +out_free: + pr_debug("%u events recorded\n", cnt); + free(events_array); +out_free_nodes: + free_event_nodes(&events); + return ret; +} + +/** + * test__switch_tracking - test using sched_switch and tracking events. + * + * This function implements a test that checks that sched_switch events and + * tracking events can be recorded for a workload (current process) using the + * evsel->core.system_wide and evsel->tracking flags (respectively) with other events + * sometimes enabled or disabled. + */ +int test__switch_tracking(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + const char *sched_switch = "sched:sched_switch"; + struct switch_tracking switch_tracking = { .tids = NULL, }; + struct record_opts opts = { + .mmap_pages = UINT_MAX, + .user_freq = UINT_MAX, + .user_interval = ULLONG_MAX, + .freq = 4000, + .target = { + .uses_mmap = true, + }, + }; + struct perf_thread_map *threads = NULL; + struct perf_cpu_map *cpus = NULL; + struct evlist *evlist = NULL; + struct evsel *evsel, *cpu_clocks_evsel, *cycles_evsel; + struct evsel *switch_evsel, *tracking_evsel; + const char *comm; + int err = -1; + + threads = thread_map__new(-1, getpid(), UINT_MAX); + if (!threads) { + pr_debug("thread_map__new failed!\n"); + goto out_err; + } + + cpus = perf_cpu_map__new(NULL); + if (!cpus) { + pr_debug("perf_cpu_map__new failed!\n"); + goto out_err; + } + + evlist = evlist__new(); + if (!evlist) { + pr_debug("evlist__new failed!\n"); + goto out_err; + } + + perf_evlist__set_maps(&evlist->core, cpus, threads); + + /* First event */ + err = parse_events(evlist, "cpu-clock:u", NULL); + if (err) { + pr_debug("Failed to parse event dummy:u\n"); + goto out_err; + } + + cpu_clocks_evsel = evlist__last(evlist); + + /* Second event */ + err = parse_events(evlist, "cycles:u", NULL); + if (err) { + pr_debug("Failed to parse event cycles:u\n"); + goto out_err; + } + + cycles_evsel = evlist__last(evlist); + + /* Third event */ + if (!perf_evlist__can_select_event(evlist, sched_switch)) { + pr_debug("No sched_switch\n"); + err = 0; + goto out; + } + + err = parse_events(evlist, sched_switch, NULL); + if (err) { + pr_debug("Failed to parse event %s\n", sched_switch); + goto out_err; + } + + switch_evsel = evlist__last(evlist); + + evsel__set_sample_bit(switch_evsel, CPU); + evsel__set_sample_bit(switch_evsel, TIME); + + switch_evsel->core.system_wide = true; + switch_evsel->no_aux_samples = true; + switch_evsel->immediate = true; + + /* Test moving an event to the front */ + if (cycles_evsel == evlist__first(evlist)) { + pr_debug("cycles event already at front"); + goto out_err; + } + perf_evlist__to_front(evlist, cycles_evsel); + if (cycles_evsel != evlist__first(evlist)) { + pr_debug("Failed to move cycles event to front"); + goto out_err; + } + + evsel__set_sample_bit(cycles_evsel, CPU); + evsel__set_sample_bit(cycles_evsel, TIME); + + /* Fourth event */ + err = parse_events(evlist, "dummy:u", NULL); + if (err) { + pr_debug("Failed to parse event dummy:u\n"); + goto out_err; + } + + tracking_evsel = evlist__last(evlist); + + perf_evlist__set_tracking_event(evlist, tracking_evsel); + + tracking_evsel->core.attr.freq = 0; + tracking_evsel->core.attr.sample_period = 1; + + evsel__set_sample_bit(tracking_evsel, TIME); + + /* Config events */ + perf_evlist__config(evlist, &opts, NULL); + + /* Check moved event is still at the front */ + if (cycles_evsel != evlist__first(evlist)) { + pr_debug("Front event no longer at front"); + goto out_err; + } + + /* Check tracking event is tracking */ + if (!tracking_evsel->core.attr.mmap || !tracking_evsel->core.attr.comm) { + pr_debug("Tracking event not tracking\n"); + goto out_err; + } + + /* Check non-tracking events are not tracking */ + evlist__for_each_entry(evlist, evsel) { + if (evsel != tracking_evsel) { + if (evsel->core.attr.mmap || evsel->core.attr.comm) { + pr_debug("Non-tracking event is tracking\n"); + goto out_err; + } + } + } + + if (evlist__open(evlist) < 0) { + pr_debug("Not supported\n"); + err = 0; + goto out; + } + + err = evlist__mmap(evlist, UINT_MAX); + if (err) { + pr_debug("evlist__mmap failed!\n"); + goto out_err; + } + + evlist__enable(evlist); + + err = evsel__disable(cpu_clocks_evsel); + if (err) { + pr_debug("perf_evlist__disable_event failed!\n"); + goto out_err; + } + + err = spin_sleep(); + if (err) { + pr_debug("spin_sleep failed!\n"); + goto out_err; + } + + comm = "Test COMM 1"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = evsel__disable(cycles_evsel); + if (err) { + pr_debug("perf_evlist__disable_event failed!\n"); + goto out_err; + } + + comm = "Test COMM 2"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = spin_sleep(); + if (err) { + pr_debug("spin_sleep failed!\n"); + goto out_err; + } + + comm = "Test COMM 3"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = evsel__enable(cycles_evsel); + if (err) { + pr_debug("perf_evlist__disable_event failed!\n"); + goto out_err; + } + + comm = "Test COMM 4"; + err = prctl(PR_SET_NAME, (unsigned long)comm, 0, 0, 0); + if (err) { + pr_debug("PR_SET_NAME failed!\n"); + goto out_err; + } + + err = spin_sleep(); + if (err) { + pr_debug("spin_sleep failed!\n"); + goto out_err; + } + + evlist__disable(evlist); + + switch_tracking.switch_evsel = switch_evsel; + switch_tracking.cycles_evsel = cycles_evsel; + + err = process_events(evlist, &switch_tracking); + + zfree(&switch_tracking.tids); + + if (err) + goto out_err; + + /* Check all 4 comm events were seen i.e. that evsel->tracking works */ + if (!switch_tracking.comm_seen[0] || !switch_tracking.comm_seen[1] || + !switch_tracking.comm_seen[2] || !switch_tracking.comm_seen[3]) { + pr_debug("Missing comm events\n"); + goto out_err; + } + + /* Check cycles event got enabled */ + if (!switch_tracking.cycles_before_comm_1) { + pr_debug("Missing cycles events\n"); + goto out_err; + } + + /* Check cycles event got disabled */ + if (switch_tracking.cycles_between_comm_2_and_comm_3) { + pr_debug("cycles events even though event was disabled\n"); + goto out_err; + } + + /* Check cycles event got enabled again */ + if (!switch_tracking.cycles_after_comm_4) { + pr_debug("Missing cycles events\n"); + goto out_err; + } +out: + if (evlist) { + evlist__disable(evlist); + evlist__delete(evlist); + } else { + perf_cpu_map__put(cpus); + perf_thread_map__put(threads); + } + + return err; + +out_err: + err = -1; + goto out; +} diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c new file mode 100644 index 000000000..adaff9044 --- /dev/null +++ b/tools/perf/tests/task-exit.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "debug.h" +#include "evlist.h" +#include "evsel.h" +#include "target.h" +#include "thread_map.h" +#include "tests.h" +#include "util/mmap.h" + +#include <errno.h> +#include <signal.h> +#include <linux/string.h> +#include <perf/cpumap.h> +#include <perf/evlist.h> +#include <perf/mmap.h> + +static int exited; +static int nr_exit; + +static void sig_handler(int sig __maybe_unused) +{ + exited = 1; +} + +/* + * perf_evlist__prepare_workload will send a SIGUSR1 if the fork fails, since + * we asked by setting its exec_error to this handler. + */ +static void workload_exec_failed_signal(int signo __maybe_unused, + siginfo_t *info __maybe_unused, + void *ucontext __maybe_unused) +{ + exited = 1; + nr_exit = -1; +} + +/* + * This test will start a workload that does nothing then it checks + * if the number of exit event reported by the kernel is 1 or not + * in order to check the kernel returns correct number of event. + */ +int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = -1; + union perf_event *event; + struct evsel *evsel; + struct evlist *evlist; + struct target target = { + .uid = UINT_MAX, + .uses_mmap = true, + }; + const char *argv[] = { "true", NULL }; + char sbuf[STRERR_BUFSIZE]; + struct perf_cpu_map *cpus; + struct perf_thread_map *threads; + struct mmap *md; + int retry_count = 0; + + signal(SIGCHLD, sig_handler); + + evlist = perf_evlist__new_default(); + if (evlist == NULL) { + pr_debug("perf_evlist__new_default\n"); + return -1; + } + + /* + * Create maps of threads and cpus to monitor. In this case + * we start with all threads and cpus (-1, -1) but then in + * perf_evlist__prepare_workload we'll fill in the only thread + * we're monitoring, the one forked there. + */ + cpus = perf_cpu_map__dummy_new(); + threads = thread_map__new_by_tid(-1); + if (!cpus || !threads) { + err = -ENOMEM; + pr_debug("Not enough memory to create thread/cpu maps\n"); + goto out_free_maps; + } + + perf_evlist__set_maps(&evlist->core, cpus, threads); + + cpus = NULL; + threads = NULL; + + err = perf_evlist__prepare_workload(evlist, &target, argv, false, + workload_exec_failed_signal); + if (err < 0) { + pr_debug("Couldn't run the workload!\n"); + goto out_delete_evlist; + } + + evsel = evlist__first(evlist); + evsel->core.attr.task = 1; +#ifdef __s390x__ + evsel->core.attr.sample_freq = 1000000; +#else + evsel->core.attr.sample_freq = 1; +#endif + evsel->core.attr.inherit = 0; + evsel->core.attr.watermark = 0; + evsel->core.attr.wakeup_events = 1; + evsel->core.attr.exclude_kernel = 1; + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("Couldn't open the evlist: %s\n", + str_error_r(-err, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + if (evlist__mmap(evlist, 128) < 0) { + pr_debug("failed to mmap events: %d (%s)\n", errno, + str_error_r(errno, sbuf, sizeof(sbuf))); + err = -1; + goto out_delete_evlist; + } + + perf_evlist__start_workload(evlist); + +retry: + md = &evlist->mmap[0]; + if (perf_mmap__read_init(&md->core) < 0) + goto out_init; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + if (event->header.type == PERF_RECORD_EXIT) + nr_exit++; + + perf_mmap__consume(&md->core); + } + perf_mmap__read_done(&md->core); + +out_init: + if (!exited || !nr_exit) { + evlist__poll(evlist, -1); + + if (retry_count++ > 1000) { + pr_debug("Failed after retrying 1000 times\n"); + err = -1; + goto out_free_maps; + } + + goto retry; + } + + if (nr_exit != 1) { + pr_debug("received %d EXIT records\n", nr_exit); + err = -1; + } + +out_free_maps: + perf_cpu_map__put(cpus); + perf_thread_map__put(threads); +out_delete_evlist: + evlist__delete(evlist); + return err; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h new file mode 100644 index 000000000..c85a2c08e --- /dev/null +++ b/tools/perf/tests/tests.h @@ -0,0 +1,145 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef TESTS_H +#define TESTS_H + +#include <stdbool.h> + +#define TEST_ASSERT_VAL(text, cond) \ +do { \ + if (!(cond)) { \ + pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \ + return -1; \ + } \ +} while (0) + +#define TEST_ASSERT_EQUAL(text, val, expected) \ +do { \ + if (val != expected) { \ + pr_debug("FAILED %s:%d %s (%d != %d)\n", \ + __FILE__, __LINE__, text, val, expected); \ + return -1; \ + } \ +} while (0) + +enum { + TEST_OK = 0, + TEST_FAIL = -1, + TEST_SKIP = -2, +}; + +struct test { + const char *desc; + int (*func)(struct test *test, int subtest); + struct { + bool skip_if_fail; + int (*get_nr)(void); + const char *(*get_desc)(int subtest); + const char *(*skip_reason)(int subtest); + } subtest; + bool (*is_supported)(void); + void *priv; +}; + +/* Tests */ +int test__vmlinux_matches_kallsyms(struct test *test, int subtest); +int test__openat_syscall_event(struct test *test, int subtest); +int test__openat_syscall_event_on_all_cpus(struct test *test, int subtest); +int test__basic_mmap(struct test *test, int subtest); +int test__PERF_RECORD(struct test *test, int subtest); +int test__perf_evsel__roundtrip_name_test(struct test *test, int subtest); +int test__perf_evsel__tp_sched_test(struct test *test, int subtest); +int test__syscall_openat_tp_fields(struct test *test, int subtest); +int test__pmu(struct test *test, int subtest); +int test__pmu_events(struct test *test, int subtest); +const char *test__pmu_events_subtest_get_desc(int subtest); +const char *test__pmu_events_subtest_skip_reason(int subtest); +int test__pmu_events_subtest_get_nr(void); +int test__attr(struct test *test, int subtest); +int test__dso_data(struct test *test, int subtest); +int test__dso_data_cache(struct test *test, int subtest); +int test__dso_data_reopen(struct test *test, int subtest); +int test__parse_events(struct test *test, int subtest); +int test__hists_link(struct test *test, int subtest); +int test__python_use(struct test *test, int subtest); +int test__bp_signal(struct test *test, int subtest); +int test__bp_signal_overflow(struct test *test, int subtest); +int test__bp_accounting(struct test *test, int subtest); +int test__wp(struct test *test, int subtest); +const char *test__wp_subtest_get_desc(int subtest); +int test__wp_subtest_get_nr(void); +int test__task_exit(struct test *test, int subtest); +int test__mem(struct test *test, int subtest); +int test__sw_clock_freq(struct test *test, int subtest); +int test__code_reading(struct test *test, int subtest); +int test__sample_parsing(struct test *test, int subtest); +int test__keep_tracking(struct test *test, int subtest); +int test__parse_no_sample_id_all(struct test *test, int subtest); +int test__dwarf_unwind(struct test *test, int subtest); +int test__expr(struct test *test, int subtest); +int test__hists_filter(struct test *test, int subtest); +int test__mmap_thread_lookup(struct test *test, int subtest); +int test__thread_maps_share(struct test *test, int subtest); +int test__hists_output(struct test *test, int subtest); +int test__hists_cumulate(struct test *test, int subtest); +int test__switch_tracking(struct test *test, int subtest); +int test__fdarray__filter(struct test *test, int subtest); +int test__fdarray__add(struct test *test, int subtest); +int test__kmod_path__parse(struct test *test, int subtest); +int test__thread_map(struct test *test, int subtest); +int test__llvm(struct test *test, int subtest); +const char *test__llvm_subtest_get_desc(int subtest); +int test__llvm_subtest_get_nr(void); +int test__bpf(struct test *test, int subtest); +const char *test__bpf_subtest_get_desc(int subtest); +int test__bpf_subtest_get_nr(void); +int test__session_topology(struct test *test, int subtest); +int test__thread_map_synthesize(struct test *test, int subtest); +int test__thread_map_remove(struct test *test, int subtest); +int test__cpu_map_synthesize(struct test *test, int subtest); +int test__synthesize_stat_config(struct test *test, int subtest); +int test__synthesize_stat(struct test *test, int subtest); +int test__synthesize_stat_round(struct test *test, int subtest); +int test__event_update(struct test *test, int subtest); +int test__event_times(struct test *test, int subtest); +int test__backward_ring_buffer(struct test *test, int subtest); +int test__cpu_map_print(struct test *test, int subtest); +int test__cpu_map_merge(struct test *test, int subtest); +int test__sdt_event(struct test *test, int subtest); +int test__is_printable_array(struct test *test, int subtest); +int test__bitmap_print(struct test *test, int subtest); +int test__perf_hooks(struct test *test, int subtest); +int test__clang(struct test *test, int subtest); +const char *test__clang_subtest_get_desc(int subtest); +int test__clang_subtest_get_nr(void); +int test__unit_number__scnprint(struct test *test, int subtest); +int test__mem2node(struct test *t, int subtest); +int test__maps__merge_in(struct test *t, int subtest); +int test__time_utils(struct test *t, int subtest); +int test__jit_write_elf(struct test *test, int subtest); +int test__api_io(struct test *test, int subtest); +int test__demangle_java(struct test *test, int subtest); +int test__pfm(struct test *test, int subtest); +const char *test__pfm_subtest_get_desc(int subtest); +int test__pfm_subtest_get_nr(void); +int test__parse_metric(struct test *test, int subtest); +int test__pe_file_parsing(struct test *test, int subtest); +int test__expand_cgroup_events(struct test *test, int subtest); + +bool test__bp_signal_is_supported(void); +bool test__bp_account_is_supported(void); +bool test__wp_is_supported(void); + +#if defined(__arm__) || defined(__aarch64__) +#ifdef HAVE_DWARF_UNWIND_SUPPORT +struct thread; +struct perf_sample; +int test__arch_unwind_sample(struct perf_sample *sample, + struct thread *thread); +#endif +#endif + +#if defined(__arm__) +int test__vectors_page(struct test *test, int subtest); +#endif + +#endif /* TESTS_H */ diff --git a/tools/perf/tests/thread-map.c b/tools/perf/tests/thread-map.c new file mode 100644 index 000000000..28f51c4bd --- /dev/null +++ b/tools/perf/tests/thread-map.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <unistd.h> +#include <sys/prctl.h> +#include "tests.h" +#include "thread_map.h" +#include "debug.h" +#include "event.h" +#include "util/synthetic-events.h" +#include <linux/zalloc.h> +#include <perf/event.h> + +struct perf_sample; +struct perf_tool; +struct machine; + +#define NAME (const char *) "perf" +#define NAMEUL (unsigned long) NAME + +int test__thread_map(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_thread_map *map; + + TEST_ASSERT_VAL("failed to set process name", + !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0)); + + /* test map on current pid */ + map = thread_map__new_by_pid(getpid()); + TEST_ASSERT_VAL("failed to alloc map", map); + + thread_map__read_comms(map); + + TEST_ASSERT_VAL("wrong nr", map->nr == 1); + TEST_ASSERT_VAL("wrong pid", + perf_thread_map__pid(map, 0) == getpid()); + TEST_ASSERT_VAL("wrong comm", + perf_thread_map__comm(map, 0) && + !strcmp(perf_thread_map__comm(map, 0), NAME)); + TEST_ASSERT_VAL("wrong refcnt", + refcount_read(&map->refcnt) == 1); + perf_thread_map__put(map); + + /* test dummy pid */ + map = perf_thread_map__new_dummy(); + TEST_ASSERT_VAL("failed to alloc map", map); + + thread_map__read_comms(map); + + TEST_ASSERT_VAL("wrong nr", map->nr == 1); + TEST_ASSERT_VAL("wrong pid", perf_thread_map__pid(map, 0) == -1); + TEST_ASSERT_VAL("wrong comm", + perf_thread_map__comm(map, 0) && + !strcmp(perf_thread_map__comm(map, 0), "dummy")); + TEST_ASSERT_VAL("wrong refcnt", + refcount_read(&map->refcnt) == 1); + perf_thread_map__put(map); + return 0; +} + +static int process_event(struct perf_tool *tool __maybe_unused, + union perf_event *event, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + struct perf_record_thread_map *map = &event->thread_map; + struct perf_thread_map *threads; + + TEST_ASSERT_VAL("wrong nr", map->nr == 1); + TEST_ASSERT_VAL("wrong pid", map->entries[0].pid == (u64) getpid()); + TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME)); + + threads = thread_map__new_event(&event->thread_map); + TEST_ASSERT_VAL("failed to alloc map", threads); + + TEST_ASSERT_VAL("wrong nr", threads->nr == 1); + TEST_ASSERT_VAL("wrong pid", + perf_thread_map__pid(threads, 0) == getpid()); + TEST_ASSERT_VAL("wrong comm", + perf_thread_map__comm(threads, 0) && + !strcmp(perf_thread_map__comm(threads, 0), NAME)); + TEST_ASSERT_VAL("wrong refcnt", + refcount_read(&threads->refcnt) == 1); + perf_thread_map__put(threads); + return 0; +} + +int test__thread_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_thread_map *threads; + + TEST_ASSERT_VAL("failed to set process name", + !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0)); + + /* test map on current pid */ + threads = thread_map__new_by_pid(getpid()); + TEST_ASSERT_VAL("failed to alloc map", threads); + + thread_map__read_comms(threads); + + TEST_ASSERT_VAL("failed to synthesize map", + !perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL)); + + return 0; +} + +int test__thread_map_remove(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct perf_thread_map *threads; + char *str; + int i; + + TEST_ASSERT_VAL("failed to allocate map string", + asprintf(&str, "%d,%d", getpid(), getppid()) >= 0); + + threads = thread_map__new_str(str, NULL, 0, false); + + TEST_ASSERT_VAL("failed to allocate thread_map", + threads); + + if (verbose > 0) + thread_map__fprintf(threads, stderr); + + TEST_ASSERT_VAL("failed to remove thread", + !thread_map__remove(threads, 0)); + + TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1); + + if (verbose > 0) + thread_map__fprintf(threads, stderr); + + TEST_ASSERT_VAL("failed to remove thread", + !thread_map__remove(threads, 0)); + + TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0); + + if (verbose > 0) + thread_map__fprintf(threads, stderr); + + TEST_ASSERT_VAL("failed to not remove thread", + thread_map__remove(threads, 0)); + + for (i = 0; i < threads->nr; i++) + zfree(&threads->map[i].comm); + + free(threads); + return 0; +} diff --git a/tools/perf/tests/thread-maps-share.c b/tools/perf/tests/thread-maps-share.c new file mode 100644 index 000000000..937148497 --- /dev/null +++ b/tools/perf/tests/thread-maps-share.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include "machine.h" +#include "thread.h" +#include "debug.h" + +int test__thread_maps_share(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + struct machines machines; + struct machine *machine; + + /* thread group */ + struct thread *leader; + struct thread *t1, *t2, *t3; + struct maps *maps; + + /* other process */ + struct thread *other, *other_leader; + struct maps *other_maps; + + /* + * This test create 2 processes abstractions (struct thread) + * with several threads and checks they properly share and + * maintain maps info (struct maps). + * + * thread group (pid: 0, tids: 0, 1, 2, 3) + * other group (pid: 4, tids: 4, 5) + */ + + machines__init(&machines); + machine = &machines.host; + + /* create process with 4 threads */ + leader = machine__findnew_thread(machine, 0, 0); + t1 = machine__findnew_thread(machine, 0, 1); + t2 = machine__findnew_thread(machine, 0, 2); + t3 = machine__findnew_thread(machine, 0, 3); + + /* and create 1 separated process, without thread leader */ + other = machine__findnew_thread(machine, 4, 5); + + TEST_ASSERT_VAL("failed to create threads", + leader && t1 && t2 && t3 && other); + + maps = leader->maps; + TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 4); + + /* test the maps pointer is shared */ + TEST_ASSERT_VAL("maps don't match", maps == t1->maps); + TEST_ASSERT_VAL("maps don't match", maps == t2->maps); + TEST_ASSERT_VAL("maps don't match", maps == t3->maps); + + /* + * Verify the other leader was created by previous call. + * It should have shared maps with no change in + * refcnt. + */ + other_leader = machine__find_thread(machine, 4, 4); + TEST_ASSERT_VAL("failed to find other leader", other_leader); + + /* + * Ok, now that all the rbtree related operations were done, + * lets remove all of them from there so that we can do the + * refcounting tests. + */ + machine__remove_thread(machine, leader); + machine__remove_thread(machine, t1); + machine__remove_thread(machine, t2); + machine__remove_thread(machine, t3); + machine__remove_thread(machine, other); + machine__remove_thread(machine, other_leader); + + other_maps = other->maps; + TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_maps->refcnt), 2); + + TEST_ASSERT_VAL("maps don't match", other_maps == other_leader->maps); + + /* release thread group */ + thread__put(leader); + TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 3); + + thread__put(t1); + TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 2); + + thread__put(t2); + TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 1); + + thread__put(t3); + + /* release other group */ + thread__put(other_leader); + TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_maps->refcnt), 1); + + thread__put(other); + + machines__exit(&machines); + return 0; +} diff --git a/tools/perf/tests/time-utils-test.c b/tools/perf/tests/time-utils-test.c new file mode 100644 index 000000000..fe57ca3b6 --- /dev/null +++ b/tools/perf/tests/time-utils-test.c @@ -0,0 +1,251 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/time64.h> +#include <inttypes.h> +#include <string.h> +#include "time-utils.h" +#include "evlist.h" +#include "session.h" +#include "debug.h" +#include "tests.h" + +static bool test__parse_nsec_time(const char *str, u64 expected) +{ + u64 ptime; + int err; + + pr_debug("\nparse_nsec_time(\"%s\")\n", str); + + err = parse_nsec_time(str, &ptime); + if (err) { + pr_debug("error %d\n", err); + return false; + } + + if (ptime != expected) { + pr_debug("Failed. ptime %" PRIu64 " expected %" PRIu64 "\n", + ptime, expected); + return false; + } + + pr_debug("%" PRIu64 "\n", ptime); + + return true; +} + +static bool test__perf_time__parse_str(const char *ostr, u64 start, u64 end) +{ + struct perf_time_interval ptime; + int err; + + pr_debug("\nperf_time__parse_str(\"%s\")\n", ostr); + + err = perf_time__parse_str(&ptime, ostr); + if (err) { + pr_debug("Error %d\n", err); + return false; + } + + if (ptime.start != start || ptime.end != end) { + pr_debug("Failed. Expected %" PRIu64 " to %" PRIu64 "\n", + start, end); + return false; + } + + return true; +} + +#define TEST_MAX 64 + +struct test_data { + const char *str; + u64 first; + u64 last; + struct perf_time_interval ptime[TEST_MAX]; + int num; + u64 skip[TEST_MAX]; + u64 noskip[TEST_MAX]; +}; + +static bool test__perf_time__parse_for_ranges(struct test_data *d) +{ + struct evlist evlist = { + .first_sample_time = d->first, + .last_sample_time = d->last, + }; + struct perf_session session = { .evlist = &evlist }; + struct perf_time_interval *ptime = NULL; + int range_size, range_num; + bool pass = false; + int i, err; + + pr_debug("\nperf_time__parse_for_ranges(\"%s\")\n", d->str); + + if (strchr(d->str, '%')) + pr_debug("first_sample_time %" PRIu64 " last_sample_time %" PRIu64 "\n", + d->first, d->last); + + err = perf_time__parse_for_ranges(d->str, &session, &ptime, &range_size, + &range_num); + if (err) { + pr_debug("error %d\n", err); + goto out; + } + + if (range_size < d->num || range_num != d->num) { + pr_debug("bad size: range_size %d range_num %d expected num %d\n", + range_size, range_num, d->num); + goto out; + } + + for (i = 0; i < d->num; i++) { + if (ptime[i].start != d->ptime[i].start || + ptime[i].end != d->ptime[i].end) { + pr_debug("bad range %d expected %" PRIu64 " to %" PRIu64 "\n", + i, d->ptime[i].start, d->ptime[i].end); + goto out; + } + } + + if (perf_time__ranges_skip_sample(ptime, d->num, 0)) { + pr_debug("failed to keep 0\n"); + goto out; + } + + for (i = 0; i < TEST_MAX; i++) { + if (d->skip[i] && + !perf_time__ranges_skip_sample(ptime, d->num, d->skip[i])) { + pr_debug("failed to skip %" PRIu64 "\n", d->skip[i]); + goto out; + } + if (d->noskip[i] && + perf_time__ranges_skip_sample(ptime, d->num, d->noskip[i])) { + pr_debug("failed to keep %" PRIu64 "\n", d->noskip[i]); + goto out; + } + } + + pass = true; +out: + free(ptime); + return pass; +} + +int test__time_utils(struct test *t __maybe_unused, int subtest __maybe_unused) +{ + bool pass = true; + + pass &= test__parse_nsec_time("0", 0); + pass &= test__parse_nsec_time("1", 1000000000ULL); + pass &= test__parse_nsec_time("0.000000001", 1); + pass &= test__parse_nsec_time("1.000000001", 1000000001ULL); + pass &= test__parse_nsec_time("123456.123456", 123456123456000ULL); + pass &= test__parse_nsec_time("1234567.123456789", 1234567123456789ULL); + pass &= test__parse_nsec_time("18446744073.709551615", + 0xFFFFFFFFFFFFFFFFULL); + + pass &= test__perf_time__parse_str("1234567.123456789,1234567.123456789", + 1234567123456789ULL, 1234567123456789ULL); + pass &= test__perf_time__parse_str("1234567.123456789,1234567.123456790", + 1234567123456789ULL, 1234567123456790ULL); + pass &= test__perf_time__parse_str("1234567.123456789,", + 1234567123456789ULL, 0); + pass &= test__perf_time__parse_str(",1234567.123456789", + 0, 1234567123456789ULL); + pass &= test__perf_time__parse_str("0,1234567.123456789", + 0, 1234567123456789ULL); + + { + u64 b = 1234567123456789ULL; + struct test_data d = { + .str = "1234567.123456789,1234567.123456790", + .ptime = { {b, b + 1}, }, + .num = 1, + .skip = { b - 1, b + 2, }, + .noskip = { b, b + 1, }, + }; + + pass &= test__perf_time__parse_for_ranges(&d); + } + + { + u64 b = 1234567123456789ULL; + u64 c = 7654321987654321ULL; + u64 e = 8000000000000000ULL; + struct test_data d = { + .str = "1234567.123456789,1234567.123456790 " + "7654321.987654321,7654321.987654444 " + "8000000,8000000.000000005", + .ptime = { {b, b + 1}, {c, c + 123}, {e, e + 5}, }, + .num = 3, + .skip = { b - 1, b + 2, c - 1, c + 124, e - 1, e + 6 }, + .noskip = { b, b + 1, c, c + 123, e, e + 5 }, + }; + + pass &= test__perf_time__parse_for_ranges(&d); + } + + { + u64 b = 7654321ULL * NSEC_PER_SEC; + struct test_data d = { + .str = "10%/1", + .first = b, + .last = b + 100, + .ptime = { {b, b + 9}, }, + .num = 1, + .skip = { b - 1, b + 10, }, + .noskip = { b, b + 9, }, + }; + + pass &= test__perf_time__parse_for_ranges(&d); + } + + { + u64 b = 7654321ULL * NSEC_PER_SEC; + struct test_data d = { + .str = "10%/2", + .first = b, + .last = b + 100, + .ptime = { {b + 10, b + 19}, }, + .num = 1, + .skip = { b + 9, b + 20, }, + .noskip = { b + 10, b + 19, }, + }; + + pass &= test__perf_time__parse_for_ranges(&d); + } + + { + u64 b = 11223344ULL * NSEC_PER_SEC; + struct test_data d = { + .str = "10%/1,10%/2", + .first = b, + .last = b + 100, + .ptime = { {b, b + 9}, {b + 10, b + 19}, }, + .num = 2, + .skip = { b - 1, b + 20, }, + .noskip = { b, b + 8, b + 9, b + 10, b + 11, b + 12, b + 19, }, + }; + + pass &= test__perf_time__parse_for_ranges(&d); + } + + { + u64 b = 11223344ULL * NSEC_PER_SEC; + struct test_data d = { + .str = "10%/1,10%/3,10%/10", + .first = b, + .last = b + 100, + .ptime = { {b, b + 9}, {b + 20, b + 29}, { b + 90, b + 100}, }, + .num = 3, + .skip = { b - 1, b + 10, b + 19, b + 30, b + 89, b + 101 }, + .noskip = { b, b + 9, b + 20, b + 29, b + 90, b + 100}, + }; + + pass &= test__perf_time__parse_for_ranges(&d); + } + + pr_debug("\n"); + + return pass ? 0 : TEST_FAIL; +} diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c new file mode 100644 index 000000000..f4a2c0df0 --- /dev/null +++ b/tools/perf/tests/topology.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <perf/cpumap.h> +#include "cpumap.h" +#include "tests.h" +#include "session.h" +#include "evlist.h" +#include "debug.h" +#include <linux/err.h> + +#define TEMPL "/tmp/perf-test-XXXXXX" +#define DATA_SIZE 10 + +static int get_temp(char *path) +{ + int fd; + + strcpy(path, TEMPL); + + fd = mkstemp(path); + if (fd < 0) { + perror("mkstemp failed"); + return -1; + } + + close(fd); + return 0; +} + +static int session_write_header(char *path) +{ + struct perf_session *session; + struct perf_data data = { + .path = path, + .mode = PERF_DATA_MODE_WRITE, + }; + + session = perf_session__new(&data, false, NULL); + TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); + + session->evlist = perf_evlist__new_default(); + TEST_ASSERT_VAL("can't get evlist", session->evlist); + + perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); + perf_header__set_feat(&session->header, HEADER_NRCPUS); + perf_header__set_feat(&session->header, HEADER_ARCH); + + session->header.data_size += DATA_SIZE; + + TEST_ASSERT_VAL("failed to write header", + !perf_session__write_header(session, session->evlist, data.file.fd, true)); + + evlist__delete(session->evlist); + perf_session__delete(session); + + return 0; +} + +static int check_cpu_topology(char *path, struct perf_cpu_map *map) +{ + struct perf_session *session; + struct perf_data data = { + .path = path, + .mode = PERF_DATA_MODE_READ, + }; + int i; + + session = perf_session__new(&data, false, NULL); + TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); + + /* On platforms with large numbers of CPUs process_cpu_topology() + * might issue an error while reading the perf.data file section + * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member + * cpu is a NULL pointer. + * Example: On s390 + * CPU 0 is on core_id 0 and physical_package_id 6 + * CPU 1 is on core_id 1 and physical_package_id 3 + * + * Core_id and physical_package_id are platform and architecture + * dependend and might have higher numbers than the CPU id. + * This actually depends on the configuration. + * + * In this case process_cpu_topology() prints error message: + * "socket_id number is too big. You may need to upgrade the + * perf tool." + * + * This is the reason why this test might be skipped. + */ + if (!session->header.env.cpu) + return TEST_SKIP; + + for (i = 0; i < session->header.env.nr_cpus_avail; i++) { + if (!cpu_map__has(map, i)) + continue; + pr_debug("CPU %d, core %d, socket %d\n", i, + session->header.env.cpu[i].core_id, + session->header.env.cpu[i].socket_id); + } + + for (i = 0; i < map->nr; i++) { + TEST_ASSERT_VAL("Core ID doesn't match", + (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff))); + + TEST_ASSERT_VAL("Socket ID doesn't match", + (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL))); + } + + perf_session__delete(session); + + return 0; +} + +int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + char path[PATH_MAX]; + struct perf_cpu_map *map; + int ret = TEST_FAIL; + + TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); + + pr_debug("templ file: %s\n", path); + + if (session_write_header(path)) + goto free_path; + + map = perf_cpu_map__new(NULL); + if (map == NULL) { + pr_debug("failed to get system cpumap\n"); + goto free_path; + } + + ret = check_cpu_topology(path, map); + perf_cpu_map__put(map); + +free_path: + unlink(path); + return ret; +} diff --git a/tools/perf/tests/unit_number__scnprintf.c b/tools/perf/tests/unit_number__scnprintf.c new file mode 100644 index 000000000..372175743 --- /dev/null +++ b/tools/perf/tests/unit_number__scnprintf.c @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <inttypes.h> +#include <linux/compiler.h> +#include <linux/types.h> +#include <string.h> +#include "tests.h" +#include "units.h" +#include "debug.h" + +int test__unit_number__scnprint(struct test *t __maybe_unused, int subtest __maybe_unused) +{ + struct { + u64 n; + const char *str; + } test[] = { + { 1, "1B" }, + { 10*1024, "10K" }, + { 20*1024*1024, "20M" }, + { 30*1024*1024*1024ULL, "30G" }, + { 0, "0B" }, + { 0, NULL }, + }; + unsigned i = 0; + + while (test[i].str) { + char buf[100]; + + unit_number__scnprintf(buf, sizeof(buf), test[i].n); + + pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n", + test[i].n, test[i].str, buf); + + if (strcmp(test[i].str, buf)) + return TEST_FAIL; + + i++; + } + + return TEST_OK; +} diff --git a/tools/perf/tests/vmlinux-kallsyms.c b/tools/perf/tests/vmlinux-kallsyms.c new file mode 100644 index 000000000..193b7c91b --- /dev/null +++ b/tools/perf/tests/vmlinux-kallsyms.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <linux/rbtree.h> +#include <inttypes.h> +#include <string.h> +#include <stdlib.h> +#include "dso.h" +#include "map.h" +#include "symbol.h" +#include <internal/lib.h> // page_size +#include "tests.h" +#include "debug.h" +#include "machine.h" + +#define UM(x) kallsyms_map->unmap_ip(kallsyms_map, (x)) + +int test__vmlinux_matches_kallsyms(struct test *test __maybe_unused, int subtest __maybe_unused) +{ + int err = -1; + struct rb_node *nd; + struct symbol *sym; + struct map *kallsyms_map, *vmlinux_map, *map; + struct machine kallsyms, vmlinux; + struct maps *maps = machine__kernel_maps(&vmlinux); + u64 mem_start, mem_end; + bool header_printed; + + /* + * Step 1: + * + * Init the machines that will hold kernel, modules obtained from + * both vmlinux + .ko files and from /proc/kallsyms split by modules. + */ + machine__init(&kallsyms, "", HOST_KERNEL_ID); + machine__init(&vmlinux, "", HOST_KERNEL_ID); + + /* + * Step 2: + * + * Create the kernel maps for kallsyms and the DSO where we will then + * load /proc/kallsyms. Also create the modules maps from /proc/modules + * and find the .ko files that match them in /lib/modules/`uname -r`/. + */ + if (machine__create_kernel_maps(&kallsyms) < 0) { + pr_debug("machine__create_kernel_maps "); + goto out; + } + + /* + * Step 3: + * + * Load and split /proc/kallsyms into multiple maps, one per module. + * Do not use kcore, as this test was designed before kcore support + * and has parts that only make sense if using the non-kcore code. + * XXX: extend it to stress the kcorre code as well, hint: the list + * of modules extracted from /proc/kcore, in its current form, can't + * be compacted against the list of modules found in the "vmlinux" + * code and with the one got from /proc/modules from the "kallsyms" code. + */ + if (machine__load_kallsyms(&kallsyms, "/proc/kallsyms") <= 0) { + pr_debug("dso__load_kallsyms "); + goto out; + } + + /* + * Step 4: + * + * kallsyms will be internally on demand sorted by name so that we can + * find the reference relocation * symbol, i.e. the symbol we will use + * to see if the running kernel was relocated by checking if it has the + * same value in the vmlinux file we load. + */ + kallsyms_map = machine__kernel_map(&kallsyms); + + /* + * Step 5: + * + * Now repeat step 2, this time for the vmlinux file we'll auto-locate. + */ + if (machine__create_kernel_maps(&vmlinux) < 0) { + pr_debug("machine__create_kernel_maps "); + goto out; + } + + vmlinux_map = machine__kernel_map(&vmlinux); + + /* + * Step 6: + * + * Locate a vmlinux file in the vmlinux path that has a buildid that + * matches the one of the running kernel. + * + * While doing that look if we find the ref reloc symbol, if we find it + * we'll have its ref_reloc_symbol.unrelocated_addr and then + * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines + * to fixup the symbols. + */ + if (machine__load_vmlinux_path(&vmlinux) <= 0) { + pr_debug("Couldn't find a vmlinux that matches the kernel running on this machine, skipping test\n"); + err = TEST_SKIP; + goto out; + } + + err = 0; + /* + * Step 7: + * + * Now look at the symbols in the vmlinux DSO and check if we find all of them + * in the kallsyms dso. For the ones that are in both, check its names and + * end addresses too. + */ + map__for_each_symbol(vmlinux_map, sym, nd) { + struct symbol *pair, *first_pair; + + sym = rb_entry(nd, struct symbol, rb_node); + + if (sym->start == sym->end) + continue; + + mem_start = vmlinux_map->unmap_ip(vmlinux_map, sym->start); + mem_end = vmlinux_map->unmap_ip(vmlinux_map, sym->end); + + first_pair = machine__find_kernel_symbol(&kallsyms, mem_start, NULL); + pair = first_pair; + + if (pair && UM(pair->start) == mem_start) { +next_pair: + if (arch__compare_symbol_names(sym->name, pair->name) == 0) { + /* + * kallsyms don't have the symbol end, so we + * set that by using the next symbol start - 1, + * in some cases we get this up to a page + * wrong, trace_kmalloc when I was developing + * this code was one such example, 2106 bytes + * off the real size. More than that and we + * _really_ have a problem. + */ + s64 skew = mem_end - UM(pair->end); + if (llabs(skew) >= page_size) + pr_debug("WARN: %#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", + mem_start, sym->name, mem_end, + UM(pair->end)); + + /* + * Do not count this as a failure, because we + * could really find a case where it's not + * possible to get proper function end from + * kallsyms. + */ + continue; + } else { + pair = machine__find_kernel_symbol_by_name(&kallsyms, sym->name, NULL); + if (pair) { + if (UM(pair->start) == mem_start) + goto next_pair; + + pr_debug("WARN: %#" PRIx64 ": diff name v: %s k: %s\n", + mem_start, sym->name, pair->name); + } else { + pr_debug("WARN: %#" PRIx64 ": diff name v: %s k: %s\n", + mem_start, sym->name, first_pair->name); + } + + continue; + } + } else if (mem_start == kallsyms.vmlinux_map->end) { + /* + * Ignore aliases to _etext, i.e. to the end of the kernel text area, + * such as __indirect_thunk_end. + */ + continue; + } else { + pr_debug("ERR : %#" PRIx64 ": %s not on kallsyms\n", + mem_start, sym->name); + } + + err = -1; + } + + if (verbose <= 0) + goto out; + + header_printed = false; + + maps__for_each_entry(maps, map) { + struct map * + /* + * If it is the kernel, kallsyms is always "[kernel.kallsyms]", while + * the kernel will have the path for the vmlinux file being used, + * so use the short name, less descriptive but the same ("[kernel]" in + * both cases. + */ + pair = maps__find_by_name(&kallsyms.kmaps, (map->dso->kernel ? + map->dso->short_name : + map->dso->name)); + if (pair) { + pair->priv = 1; + } else { + if (!header_printed) { + pr_info("WARN: Maps only in vmlinux:\n"); + header_printed = true; + } + map__fprintf(map, stderr); + } + } + + header_printed = false; + + maps__for_each_entry(maps, map) { + struct map *pair; + + mem_start = vmlinux_map->unmap_ip(vmlinux_map, map->start); + mem_end = vmlinux_map->unmap_ip(vmlinux_map, map->end); + + pair = maps__find(&kallsyms.kmaps, mem_start); + if (pair == NULL || pair->priv) + continue; + + if (pair->start == mem_start) { + if (!header_printed) { + pr_info("WARN: Maps in vmlinux with a different name in kallsyms:\n"); + header_printed = true; + } + + pr_info("WARN: %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", + map->start, map->end, map->pgoff, map->dso->name); + if (mem_end != pair->end) + pr_info(":\nWARN: *%" PRIx64 "-%" PRIx64 " %" PRIx64, + pair->start, pair->end, pair->pgoff); + pr_info(" %s\n", pair->dso->name); + pair->priv = 1; + } + } + + header_printed = false; + + maps = machine__kernel_maps(&kallsyms); + + maps__for_each_entry(maps, map) { + if (!map->priv) { + if (!header_printed) { + pr_info("WARN: Maps only in kallsyms:\n"); + header_printed = true; + } + map__fprintf(map, stderr); + } + } +out: + machine__exit(&kallsyms); + machine__exit(&vmlinux); + return err; +} diff --git a/tools/perf/tests/wp.c b/tools/perf/tests/wp.c new file mode 100644 index 000000000..d262d6639 --- /dev/null +++ b/tools/perf/tests/wp.c @@ -0,0 +1,246 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <linux/hw_breakpoint.h> +#include <linux/kernel.h> +#include "tests.h" +#include "debug.h" +#include "event.h" +#include "cloexec.h" +#include "../perf-sys.h" + +#define WP_TEST_ASSERT_VAL(fd, text, val) \ +do { \ + long long count; \ + wp_read(fd, &count, sizeof(long long)); \ + TEST_ASSERT_VAL(text, count == val); \ +} while (0) + +volatile u64 data1; +volatile u8 data2[3]; + +static int wp_read(int fd, long long *count, int size) +{ + int ret = read(fd, count, size); + + if (ret != size) { + pr_debug("failed to read: %d\n", ret); + return -1; + } + return 0; +} + +static void get__perf_event_attr(struct perf_event_attr *attr, int wp_type, + void *wp_addr, unsigned long wp_len) +{ + memset(attr, 0, sizeof(struct perf_event_attr)); + attr->type = PERF_TYPE_BREAKPOINT; + attr->size = sizeof(struct perf_event_attr); + attr->config = 0; + attr->bp_type = wp_type; + attr->bp_addr = (unsigned long)wp_addr; + attr->bp_len = wp_len; + attr->sample_period = 1; + attr->sample_type = PERF_SAMPLE_IP; + attr->exclude_kernel = 1; + attr->exclude_hv = 1; +} + +static int __event(int wp_type, void *wp_addr, unsigned long wp_len) +{ + int fd; + struct perf_event_attr attr; + + get__perf_event_attr(&attr, wp_type, wp_addr, wp_len); + fd = sys_perf_event_open(&attr, 0, -1, -1, + perf_event_open_cloexec_flag()); + if (fd < 0) + pr_debug("failed opening event %x\n", attr.bp_type); + + return fd; +} + +static int wp_ro_test(void) +{ + int fd; + unsigned long tmp, tmp1 = rand(); + + fd = __event(HW_BREAKPOINT_R, (void *)&data1, sizeof(data1)); + if (fd < 0) + return -1; + + tmp = data1; + WP_TEST_ASSERT_VAL(fd, "RO watchpoint", 1); + + data1 = tmp1 + tmp; + WP_TEST_ASSERT_VAL(fd, "RO watchpoint", 1); + + close(fd); + return 0; +} + +static int wp_wo_test(void) +{ + int fd; + unsigned long tmp, tmp1 = rand(); + + fd = __event(HW_BREAKPOINT_W, (void *)&data1, sizeof(data1)); + if (fd < 0) + return -1; + + tmp = data1; + WP_TEST_ASSERT_VAL(fd, "WO watchpoint", 0); + + data1 = tmp1 + tmp; + WP_TEST_ASSERT_VAL(fd, "WO watchpoint", 1); + + close(fd); + return 0; +} + +static int wp_rw_test(void) +{ + int fd; + unsigned long tmp, tmp1 = rand(); + + fd = __event(HW_BREAKPOINT_R | HW_BREAKPOINT_W, (void *)&data1, + sizeof(data1)); + if (fd < 0) + return -1; + + tmp = data1; + WP_TEST_ASSERT_VAL(fd, "RW watchpoint", 1); + + data1 = tmp1 + tmp; + WP_TEST_ASSERT_VAL(fd, "RW watchpoint", 2); + + close(fd); + return 0; +} + +static int wp_modify_test(void) +{ + int fd, ret; + unsigned long tmp = rand(); + struct perf_event_attr new_attr; + + fd = __event(HW_BREAKPOINT_W, (void *)&data1, sizeof(data1)); + if (fd < 0) + return -1; + + data1 = tmp; + WP_TEST_ASSERT_VAL(fd, "Modify watchpoint", 1); + + /* Modify watchpoint with disabled = 1 */ + get__perf_event_attr(&new_attr, HW_BREAKPOINT_W, (void *)&data2[0], + sizeof(u8) * 2); + new_attr.disabled = 1; + ret = ioctl(fd, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, &new_attr); + if (ret < 0) { + pr_debug("ioctl(PERF_EVENT_IOC_MODIFY_ATTRIBUTES) failed\n"); + close(fd); + return ret; + } + + data2[1] = tmp; /* Not Counted */ + WP_TEST_ASSERT_VAL(fd, "Modify watchpoint", 1); + + /* Enable the event */ + ioctl(fd, PERF_EVENT_IOC_ENABLE, 0); + if (ret < 0) { + pr_debug("Failed to enable event\n"); + close(fd); + return ret; + } + + data2[1] = tmp; /* Counted */ + WP_TEST_ASSERT_VAL(fd, "Modify watchpoint", 2); + + data2[2] = tmp; /* Not Counted */ + WP_TEST_ASSERT_VAL(fd, "Modify watchpoint", 2); + + close(fd); + return 0; +} + +static bool wp_ro_supported(void) +{ +#if defined (__x86_64__) || defined (__i386__) + return false; +#else + return true; +#endif +} + +static void wp_ro_skip_msg(void) +{ +#if defined (__x86_64__) || defined (__i386__) + pr_debug("Hardware does not support read only watchpoints.\n"); +#endif +} + +static struct { + const char *desc; + int (*target_func)(void); + bool (*is_supported)(void); + void (*skip_msg)(void); +} wp_testcase_table[] = { + { + .desc = "Read Only Watchpoint", + .target_func = &wp_ro_test, + .is_supported = &wp_ro_supported, + .skip_msg = &wp_ro_skip_msg, + }, + { + .desc = "Write Only Watchpoint", + .target_func = &wp_wo_test, + }, + { + .desc = "Read / Write Watchpoint", + .target_func = &wp_rw_test, + }, + { + .desc = "Modify Watchpoint", + .target_func = &wp_modify_test, + }, +}; + +int test__wp_subtest_get_nr(void) +{ + return (int)ARRAY_SIZE(wp_testcase_table); +} + +const char *test__wp_subtest_get_desc(int i) +{ + if (i < 0 || i >= (int)ARRAY_SIZE(wp_testcase_table)) + return NULL; + return wp_testcase_table[i].desc; +} + +int test__wp(struct test *test __maybe_unused, int i) +{ + if (i < 0 || i >= (int)ARRAY_SIZE(wp_testcase_table)) + return TEST_FAIL; + + if (wp_testcase_table[i].is_supported && + !wp_testcase_table[i].is_supported()) { + wp_testcase_table[i].skip_msg(); + return TEST_SKIP; + } + + return !wp_testcase_table[i].target_func() ? TEST_OK : TEST_FAIL; +} + +/* The s390 so far does not have support for + * instruction breakpoint using the perf_event_open() system call. + */ +bool test__wp_is_supported(void) +{ +#if defined(__s390x__) + return false; +#else + return true; +#endif +} |