4 * Builtin regression testing command: ever growing number of sanity tests
14 #include <subcmd/parse-options.h>
17 static bool dont_fork;
19 struct test __weak arch_tests[] = {
25 static struct test generic_tests[] = {
27 .desc = "vmlinux symtab matches kallsyms",
28 .func = test__vmlinux_matches_kallsyms,
31 .desc = "Detect openat syscall event",
32 .func = test__openat_syscall_event,
35 .desc = "Detect openat syscall event on all cpus",
36 .func = test__openat_syscall_event_on_all_cpus,
39 .desc = "Read samples using the mmap interface",
40 .func = test__basic_mmap,
43 .desc = "Parse event definition strings",
44 .func = test__parse_events,
47 .desc = "PERF_RECORD_* events & perf_sample fields",
48 .func = test__PERF_RECORD,
51 .desc = "Parse perf pmu format",
55 .desc = "DSO data read",
56 .func = test__dso_data,
59 .desc = "DSO data cache",
60 .func = test__dso_data_cache,
63 .desc = "DSO data reopen",
64 .func = test__dso_data_reopen,
67 .desc = "Roundtrip evsel->name",
68 .func = test__perf_evsel__roundtrip_name_test,
71 .desc = "Parse sched tracepoints fields",
72 .func = test__perf_evsel__tp_sched_test,
75 .desc = "syscalls:sys_enter_openat event fields",
76 .func = test__syscall_openat_tp_fields,
79 .desc = "Setup struct perf_event_attr",
83 .desc = "Match and link multiple hists",
84 .func = test__hists_link,
87 .desc = "'import perf' in python",
88 .func = test__python_use,
91 .desc = "Breakpoint overflow signal handler",
92 .func = test__bp_signal,
95 .desc = "Breakpoint overflow sampling",
96 .func = test__bp_signal_overflow,
99 .desc = "Number of exit events of a simple workload",
100 .func = test__task_exit,
103 .desc = "Software clock events period values",
104 .func = test__sw_clock_freq,
107 .desc = "Object code reading",
108 .func = test__code_reading,
111 .desc = "Sample parsing",
112 .func = test__sample_parsing,
115 .desc = "Use a dummy software event to keep tracking",
116 .func = test__keep_tracking,
119 .desc = "Parse with no sample_id_all bit set",
120 .func = test__parse_no_sample_id_all,
123 .desc = "Filter hist entries",
124 .func = test__hists_filter,
127 .desc = "Lookup mmap thread",
128 .func = test__mmap_thread_lookup,
131 .desc = "Share thread mg",
132 .func = test__thread_mg_share,
135 .desc = "Sort output of hist entries",
136 .func = test__hists_output,
139 .desc = "Cumulate child hist entries",
140 .func = test__hists_cumulate,
143 .desc = "Track with sched_switch",
144 .func = test__switch_tracking,
147 .desc = "Filter fds with revents mask in a fdarray",
148 .func = test__fdarray__filter,
151 .desc = "Add fd to a fdarray, making it autogrow",
152 .func = test__fdarray__add,
155 .desc = "kmod_path__parse",
156 .func = test__kmod_path__parse,
159 .desc = "Thread map",
160 .func = test__thread_map,
163 .desc = "LLVM search and compile",
166 .skip_if_fail = true,
167 .get_nr = test__llvm_subtest_get_nr,
168 .get_desc = test__llvm_subtest_get_desc,
172 .desc = "Session topology",
173 .func = test_session_topology,
176 .desc = "BPF filter",
179 .skip_if_fail = true,
180 .get_nr = test__bpf_subtest_get_nr,
181 .get_desc = test__bpf_subtest_get_desc,
185 .desc = "Synthesize thread map",
186 .func = test__thread_map_synthesize,
189 .desc = "Remove thread map",
190 .func = test__thread_map_remove,
193 .desc = "Synthesize cpu map",
194 .func = test__cpu_map_synthesize,
197 .desc = "Synthesize stat config",
198 .func = test__synthesize_stat_config,
201 .desc = "Synthesize stat",
202 .func = test__synthesize_stat,
205 .desc = "Synthesize stat round",
206 .func = test__synthesize_stat_round,
209 .desc = "Synthesize attr update",
210 .func = test__event_update,
213 .desc = "Event times",
214 .func = test__event_times,
217 .desc = "Read backward ring buffer",
218 .func = test__backward_ring_buffer,
221 .desc = "Print cpu map",
222 .func = test__cpu_map_print,
225 .desc = "Probe SDT events",
226 .func = test__sdt_event,
229 .desc = "is_printable_array",
230 .func = test__is_printable_array,
233 .desc = "Print bitmap",
234 .func = test__bitmap_print,
237 .desc = "perf hooks",
238 .func = test__perf_hooks,
241 .desc = "builtin clang support",
244 .skip_if_fail = true,
245 .get_nr = test__clang_subtest_get_nr,
246 .get_desc = test__clang_subtest_get_desc,
250 .desc = "unit_number__scnprintf",
251 .func = test__unit_number__scnprint,
258 static struct test *tests[] = {
263 static bool perf_test__matches(struct test *test, int curr, int argc, const char *argv[])
270 for (i = 0; i < argc; ++i) {
272 long nr = strtoul(argv[i], &end, 10);
280 if (strcasestr(test->desc, argv[i]))
287 static int run_test(struct test *test, int subtest)
289 int status, err = -1, child = dont_fork ? 0 : fork();
290 char sbuf[STRERR_BUFSIZE];
293 pr_err("failed to fork test: %s\n",
294 str_error_r(errno, sbuf, sizeof(sbuf)));
300 pr_debug("test child forked, pid %d\n", getpid());
303 int nullfd = open("/dev/null", O_WRONLY);
306 close(STDERR_FILENO);
307 close(STDOUT_FILENO);
309 dup2(nullfd, STDOUT_FILENO);
310 dup2(STDOUT_FILENO, STDERR_FILENO);
314 signal(SIGSEGV, sighandler_dump_stack);
315 signal(SIGFPE, sighandler_dump_stack);
319 err = test->func(subtest);
327 if (WIFEXITED(status)) {
328 err = (signed char)WEXITSTATUS(status);
329 pr_debug("test child finished with %d\n", err);
330 } else if (WIFSIGNALED(status)) {
332 pr_debug("test child interrupted\n");
339 #define for_each_test(j, t) \
340 for (j = 0; j < ARRAY_SIZE(tests); j++) \
341 for (t = &tests[j][0]; t->func; t++)
343 static int test_and_print(struct test *t, bool force_skip, int subtest)
348 pr_debug("\n--- start ---\n");
349 err = run_test(t, subtest);
350 pr_debug("---- end ----\n");
352 pr_debug("\n--- force skipped ---\n");
356 if (!t->subtest.get_nr)
357 pr_debug("%s:", t->desc);
359 pr_debug("%s subtest %d:", t->desc, subtest);
366 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
370 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
377 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
384 for_each_test(j, t) {
385 int len = strlen(t->desc);
391 for_each_test(j, t) {
394 if (!perf_test__matches(t, curr, argc, argv))
397 pr_info("%2d: %-*s:", i, width, t->desc);
399 if (intlist__find(skiplist, i)) {
400 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
404 if (!t->subtest.get_nr) {
405 test_and_print(t, false, -1);
407 int subn = t->subtest.get_nr();
409 * minus 2 to align with normal testcases.
410 * For subtest we print additional '.x' in number.
413 * 35: Test LLVM searching and compiling :
414 * 35.1: Basic BPF llvm compiling test : Ok
416 int subw = width > 2 ? width - 2 : width;
421 color_fprintf(stderr, PERF_COLOR_YELLOW,
422 " Skip (not compiled in)\n");
427 for (subi = 0; subi < subn; subi++) {
428 int len = strlen(t->subtest.get_desc(subi));
434 for (subi = 0; subi < subn; subi++) {
435 pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
436 t->subtest.get_desc(subi));
437 err = test_and_print(t, skip, subi);
438 if (err != TEST_OK && t->subtest.skip_if_fail)
447 static int perf_test__list(int argc, const char **argv)
453 for_each_test(j, t) {
454 if (argc > 1 && !strstr(t->desc, argv[1]))
457 pr_info("%2d: %s\n", ++i, t->desc);
463 int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
465 const char *test_usage[] = {
466 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
469 const char *skip = NULL;
470 const struct option test_options[] = {
471 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
472 OPT_INCR('v', "verbose", &verbose,
473 "be more verbose (show symbol address, etc)"),
474 OPT_BOOLEAN('F', "dont-fork", &dont_fork,
475 "Do not fork for testcase"),
478 const char * const test_subcommands[] = { "list", NULL };
479 struct intlist *skiplist = NULL;
480 int ret = hists__init();
485 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
486 if (argc >= 1 && !strcmp(argv[0], "list"))
487 return perf_test__list(argc, argv);
489 symbol_conf.priv_size = sizeof(int);
490 symbol_conf.sort_by_name = true;
491 symbol_conf.try_vmlinux_path = true;
493 if (symbol__init(NULL) < 0)
497 skiplist = intlist__new(skip);
499 return __cmd_test(argc, argv, skiplist);