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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/tests/builtin-test.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/tests/builtin-test.c')
-rw-r--r-- | tools/perf/tests/builtin-test.c | 819 |
1 files changed, 819 insertions, 0 deletions
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); +} |