Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 565 insertions, 0 deletions

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
new file mode 100644
index 0000000000..0ad18cf6dd
--- /dev/null
+++ b/tools/perf/tests/builtin-test.c
@@ -0,0 +1,565 @@
+// 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>
+#include <linux/zalloc.h>
+
+#include "builtin-test-list.h"
+
+static bool dont_fork;
+const char *dso_to_test;
+
+/*
+ * List of architecture specific tests. Not a weak symbol as the array length is
+ * dependent on the initialization, as such GCC with LTO complains of
+ * conflicting definitions with a weak symbol.
+ */
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
+extern struct test_suite *arch_tests[];
+#else
+static struct test_suite *arch_tests[] = {
+	NULL,
+};
+#endif
+
+static struct test_suite *generic_tests[] = {
+	&suite__vmlinux_matches_kallsyms,
+#ifdef HAVE_LIBTRACEEVENT
+	&suite__openat_syscall_event,
+	&suite__openat_syscall_event_on_all_cpus,
+	&suite__basic_mmap,
+#endif
+	&suite__mem,
+	&suite__parse_events,
+	&suite__expr,
+	&suite__PERF_RECORD,
+	&suite__pmu,
+	&suite__pmu_events,
+	&suite__dso_data,
+	&suite__dso_data_cache,
+	&suite__dso_data_reopen,
+	&suite__perf_evsel__roundtrip_name_test,
+#ifdef HAVE_LIBTRACEEVENT
+	&suite__perf_evsel__tp_sched_test,
+	&suite__syscall_openat_tp_fields,
+#endif
+	&suite__attr,
+	&suite__hists_link,
+	&suite__python_use,
+	&suite__bp_signal,
+	&suite__bp_signal_overflow,
+	&suite__bp_accounting,
+	&suite__wp,
+	&suite__task_exit,
+	&suite__sw_clock_freq,
+	&suite__code_reading,
+	&suite__sample_parsing,
+	&suite__keep_tracking,
+	&suite__parse_no_sample_id_all,
+	&suite__hists_filter,
+	&suite__mmap_thread_lookup,
+	&suite__thread_maps_share,
+	&suite__hists_output,
+	&suite__hists_cumulate,
+#ifdef HAVE_LIBTRACEEVENT
+	&suite__switch_tracking,
+#endif
+	&suite__fdarray__filter,
+	&suite__fdarray__add,
+	&suite__kmod_path__parse,
+	&suite__thread_map,
+	&suite__session_topology,
+	&suite__thread_map_synthesize,
+	&suite__thread_map_remove,
+	&suite__cpu_map,
+	&suite__synthesize_stat_config,
+	&suite__synthesize_stat,
+	&suite__synthesize_stat_round,
+	&suite__event_update,
+	&suite__event_times,
+	&suite__backward_ring_buffer,
+	&suite__sdt_event,
+	&suite__is_printable_array,
+	&suite__bitmap_print,
+	&suite__perf_hooks,
+	&suite__unit_number__scnprint,
+	&suite__mem2node,
+	&suite__time_utils,
+	&suite__jit_write_elf,
+	&suite__pfm,
+	&suite__api_io,
+	&suite__maps__merge_in,
+	&suite__demangle_java,
+	&suite__demangle_ocaml,
+	&suite__parse_metric,
+	&suite__pe_file_parsing,
+	&suite__expand_cgroup_events,
+	&suite__perf_time_to_tsc,
+	&suite__dlfilter,
+	&suite__sigtrap,
+	&suite__event_groups,
+	&suite__symbols,
+	NULL,
+};
+
+static struct test_suite **tests[] = {
+	generic_tests,
+	arch_tests,
+};
+
+static struct test_workload *workloads[] = {
+	&workload__noploop,
+	&workload__thloop,
+	&workload__leafloop,
+	&workload__sqrtloop,
+	&workload__brstack,
+	&workload__datasym,
+};
+
+static int num_subtests(const struct test_suite *t)
+{
+	int num;
+
+	if (!t->test_cases)
+		return 0;
+
+	num = 0;
+	while (t->test_cases[num].name)
+		num++;
+
+	return num;
+}
+
+static bool has_subtests(const struct test_suite *t)
+{
+	return num_subtests(t) > 1;
+}
+
+static const char *skip_reason(const struct test_suite *t, int subtest)
+{
+	if (!t->test_cases)
+		return NULL;
+
+	return t->test_cases[subtest >= 0 ? subtest : 0].skip_reason;
+}
+
+static const char *test_description(const struct test_suite *t, int subtest)
+{
+	if (t->test_cases && subtest >= 0)
+		return t->test_cases[subtest].desc;
+
+	return t->desc;
+}
+
+static test_fnptr test_function(const struct test_suite *t, int subtest)
+{
+	if (subtest <= 0)
+		return t->test_cases[0].run_case;
+
+	return t->test_cases[subtest].run_case;
+}
+
+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_suite *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_function(test, subtest)(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, k, t)			\
+	for (j = 0, k = 0; j < ARRAY_SIZE(tests); j++, k = 0)	\
+		while ((t = tests[j][k++]) != NULL)
+
+static int test_and_print(struct test_suite *t, int subtest)
+{
+	int err;
+
+	pr_debug("\n--- start ---\n");
+	err = run_test(t, subtest);
+	pr_debug("---- end ----\n");
+
+	if (!has_subtests(t))
+		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 *reason = skip_reason(t, subtest);
+
+		if (reason)
+			color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (%s)\n", 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;
+}
+
+struct shell_test {
+	const char *dir;
+	const char *file;
+};
+
+static int shell_test__run(struct test_suite *test, int subdir __maybe_unused)
+{
+	int err;
+	char script[PATH_MAX];
+	struct shell_test *st = test->priv;
+
+	path__join(script, sizeof(script) - 3, st->dir, st->file);
+
+	if (verbose > 0)
+		strncat(script, " -v", sizeof(script) - strlen(script) - 1);
+
+	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,
+				struct intlist *skiplist)
+{
+	struct shell_test st;
+	const struct script_file *files, *file;
+
+	files = list_script_files();
+	if (!files)
+		return 0;
+	for (file = files; file->dir; file++) {
+		int curr = i++;
+		struct test_case test_cases[] = {
+			{
+				.desc = file->desc,
+				.run_case = shell_test__run,
+			},
+			{ .name = NULL, }
+		};
+		struct test_suite test_suite = {
+			.desc = test_cases[0].desc,
+			.test_cases = test_cases,
+			.priv = &st,
+		};
+		st.dir = file->dir;
+
+		if (test_suite.desc == NULL ||
+		    !perf_test__matches(test_suite.desc, curr, argc, argv))
+			continue;
+
+		st.file = file->file;
+		pr_info("%3d: %-*s:", i, width, test_suite.desc);
+
+		if (intlist__find(skiplist, i)) {
+			color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
+			continue;
+		}
+
+		test_and_print(&test_suite, 0);
+	}
+	return 0;
+}
+
+static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
+{
+	struct test_suite *t;
+	unsigned int j, k;
+	int i = 0;
+	int width = list_script_max_width();
+
+	for_each_test(j, k, t) {
+		int len = strlen(test_description(t, -1));
+
+		if (width < len)
+			width = len;
+	}
+
+	for_each_test(j, k, t) {
+		int curr = i++;
+		int subi;
+
+		if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) {
+			bool skip = true;
+			int subn;
+
+			subn = num_subtests(t);
+
+			for (subi = 0; subi < subn; subi++) {
+				if (perf_test__matches(test_description(t, subi),
+							curr, argc, argv))
+					skip = false;
+			}
+
+			if (skip)
+				continue;
+		}
+
+		pr_info("%3d: %-*s:", i, width, test_description(t, -1));
+
+		if (intlist__find(skiplist, i)) {
+			color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
+			continue;
+		}
+
+		if (!has_subtests(t)) {
+			test_and_print(t, -1);
+		} else {
+			int subn = num_subtests(t);
+			/*
+			 * 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;
+
+			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(test_description(t, subi));
+
+				if (subw < len)
+					subw = len;
+			}
+
+			for (subi = 0; subi < subn; subi++) {
+				if (!perf_test__matches(test_description(t, subi),
+							curr, argc, argv))
+					continue;
+
+				pr_info("%3d.%1d: %-*s:", i, subi + 1, subw,
+					test_description(t, subi));
+				test_and_print(t, subi);
+			}
+		}
+	}
+
+	return run_shell_tests(argc, argv, i, width, skiplist);
+}
+
+static int perf_test__list_shell(int argc, const char **argv, int i)
+{
+	const struct script_file *files, *file;
+
+	files = list_script_files();
+	if (!files)
+		return 0;
+	for (file = files; file->dir; file++) {
+		int curr = i++;
+		struct test_suite t = {
+			.desc = file->desc
+		};
+
+		if (!perf_test__matches(t.desc, curr, argc, argv))
+			continue;
+
+		pr_info("%3d: %s\n", i, t.desc);
+	}
+	return 0;
+}
+
+static int perf_test__list(int argc, const char **argv)
+{
+	unsigned int j, k;
+	struct test_suite *t;
+	int i = 0;
+
+	for_each_test(j, k, t) {
+		int curr = i++;
+
+		if (!perf_test__matches(test_description(t, -1), curr, argc, argv))
+			continue;
+
+		pr_info("%3d: %s\n", i, test_description(t, -1));
+
+		if (has_subtests(t)) {
+			int subn = num_subtests(t);
+			int subi;
+
+			for (subi = 0; subi < subn; subi++)
+				pr_info("%3d:%1d: %s\n", i, subi + 1,
+					test_description(t, subi));
+		}
+	}
+
+	perf_test__list_shell(argc, argv, i);
+
+	return 0;
+}
+
+static int run_workload(const char *work, int argc, const char **argv)
+{
+	unsigned int i = 0;
+	struct test_workload *twl;
+
+	for (i = 0; i < ARRAY_SIZE(workloads); i++) {
+		twl = workloads[i];
+		if (!strcmp(twl->name, work))
+			return twl->func(argc, argv);
+	}
+
+	pr_info("No workload found: %s\n", work);
+	return -1;
+}
+
+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 char *workload = 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_STRING('w', "workload", &workload, "work", "workload to run for testing"),
+	OPT_STRING(0, "dso", &dso_to_test, "dso", "dso to test"),
+	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);
+
+	if (workload)
+		return run_workload(workload, argc, argv);
+
+	symbol_conf.priv_size = sizeof(int);
+	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);
+}