4 * Builtin regression testing command: ever growing number of sanity tests
16 #include <subcmd/parse-options.h>
18 #include <linux/kernel.h>
20 static bool dont_fork;
22 struct test __weak arch_tests[] = {
28 static struct test generic_tests[] = {
30 .desc = "vmlinux symtab matches kallsyms",
31 .func = test__vmlinux_matches_kallsyms,
34 .desc = "Detect openat syscall event",
35 .func = test__openat_syscall_event,
38 .desc = "Detect openat syscall event on all cpus",
39 .func = test__openat_syscall_event_on_all_cpus,
42 .desc = "Read samples using the mmap interface",
43 .func = test__basic_mmap,
46 .desc = "Parse event definition strings",
47 .func = test__parse_events,
50 .desc = "Simple expression parser",
54 .desc = "PERF_RECORD_* events & perf_sample fields",
55 .func = test__PERF_RECORD,
58 .desc = "Parse perf pmu format",
62 .desc = "DSO data read",
63 .func = test__dso_data,
66 .desc = "DSO data cache",
67 .func = test__dso_data_cache,
70 .desc = "DSO data reopen",
71 .func = test__dso_data_reopen,
74 .desc = "Roundtrip evsel->name",
75 .func = test__perf_evsel__roundtrip_name_test,
78 .desc = "Parse sched tracepoints fields",
79 .func = test__perf_evsel__tp_sched_test,
82 .desc = "syscalls:sys_enter_openat event fields",
83 .func = test__syscall_openat_tp_fields,
86 .desc = "Setup struct perf_event_attr",
90 .desc = "Match and link multiple hists",
91 .func = test__hists_link,
94 .desc = "'import perf' in python",
95 .func = test__python_use,
98 .desc = "Breakpoint overflow signal handler",
99 .func = test__bp_signal,
102 .desc = "Breakpoint overflow sampling",
103 .func = test__bp_signal_overflow,
106 .desc = "Number of exit events of a simple workload",
107 .func = test__task_exit,
110 .desc = "Software clock events period values",
111 .func = test__sw_clock_freq,
114 .desc = "Object code reading",
115 .func = test__code_reading,
118 .desc = "Sample parsing",
119 .func = test__sample_parsing,
122 .desc = "Use a dummy software event to keep tracking",
123 .func = test__keep_tracking,
126 .desc = "Parse with no sample_id_all bit set",
127 .func = test__parse_no_sample_id_all,
130 .desc = "Filter hist entries",
131 .func = test__hists_filter,
134 .desc = "Lookup mmap thread",
135 .func = test__mmap_thread_lookup,
138 .desc = "Share thread mg",
139 .func = test__thread_mg_share,
142 .desc = "Sort output of hist entries",
143 .func = test__hists_output,
146 .desc = "Cumulate child hist entries",
147 .func = test__hists_cumulate,
150 .desc = "Track with sched_switch",
151 .func = test__switch_tracking,
154 .desc = "Filter fds with revents mask in a fdarray",
155 .func = test__fdarray__filter,
158 .desc = "Add fd to a fdarray, making it autogrow",
159 .func = test__fdarray__add,
162 .desc = "kmod_path__parse",
163 .func = test__kmod_path__parse,
166 .desc = "Thread map",
167 .func = test__thread_map,
170 .desc = "LLVM search and compile",
173 .skip_if_fail = true,
174 .get_nr = test__llvm_subtest_get_nr,
175 .get_desc = test__llvm_subtest_get_desc,
179 .desc = "Session topology",
180 .func = test_session_topology,
183 .desc = "BPF filter",
186 .skip_if_fail = true,
187 .get_nr = test__bpf_subtest_get_nr,
188 .get_desc = test__bpf_subtest_get_desc,
192 .desc = "Synthesize thread map",
193 .func = test__thread_map_synthesize,
196 .desc = "Remove thread map",
197 .func = test__thread_map_remove,
200 .desc = "Synthesize cpu map",
201 .func = test__cpu_map_synthesize,
204 .desc = "Synthesize stat config",
205 .func = test__synthesize_stat_config,
208 .desc = "Synthesize stat",
209 .func = test__synthesize_stat,
212 .desc = "Synthesize stat round",
213 .func = test__synthesize_stat_round,
216 .desc = "Synthesize attr update",
217 .func = test__event_update,
220 .desc = "Event times",
221 .func = test__event_times,
224 .desc = "Read backward ring buffer",
225 .func = test__backward_ring_buffer,
228 .desc = "Print cpu map",
229 .func = test__cpu_map_print,
232 .desc = "Probe SDT events",
233 .func = test__sdt_event,
236 .desc = "is_printable_array",
237 .func = test__is_printable_array,
240 .desc = "Print bitmap",
241 .func = test__bitmap_print,
244 .desc = "perf hooks",
245 .func = test__perf_hooks,
248 .desc = "builtin clang support",
251 .skip_if_fail = true,
252 .get_nr = test__clang_subtest_get_nr,
253 .get_desc = test__clang_subtest_get_desc,
257 .desc = "unit_number__scnprintf",
258 .func = test__unit_number__scnprint,
265 static struct test *tests[] = {
270 static bool perf_test__matches(struct test *test, int curr, int argc, const char *argv[])
277 for (i = 0; i < argc; ++i) {
279 long nr = strtoul(argv[i], &end, 10);
287 if (strcasestr(test->desc, argv[i]))
294 static int run_test(struct test *test, int subtest)
296 int status, err = -1, child = dont_fork ? 0 : fork();
297 char sbuf[STRERR_BUFSIZE];
300 pr_err("failed to fork test: %s\n",
301 str_error_r(errno, sbuf, sizeof(sbuf)));
307 pr_debug("test child forked, pid %d\n", getpid());
310 int nullfd = open("/dev/null", O_WRONLY);
313 close(STDERR_FILENO);
314 close(STDOUT_FILENO);
316 dup2(nullfd, STDOUT_FILENO);
317 dup2(STDOUT_FILENO, STDERR_FILENO);
321 signal(SIGSEGV, sighandler_dump_stack);
322 signal(SIGFPE, sighandler_dump_stack);
326 err = test->func(subtest);
334 if (WIFEXITED(status)) {
335 err = (signed char)WEXITSTATUS(status);
336 pr_debug("test child finished with %d\n", err);
337 } else if (WIFSIGNALED(status)) {
339 pr_debug("test child interrupted\n");
346 #define for_each_test(j, t) \
347 for (j = 0; j < ARRAY_SIZE(tests); j++) \
348 for (t = &tests[j][0]; t->func; t++)
350 static int test_and_print(struct test *t, bool force_skip, int subtest)
355 pr_debug("\n--- start ---\n");
356 err = run_test(t, subtest);
357 pr_debug("---- end ----\n");
359 pr_debug("\n--- force skipped ---\n");
363 if (!t->subtest.get_nr)
364 pr_debug("%s:", t->desc);
366 pr_debug("%s subtest %d:", t->desc, subtest);
373 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
377 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
384 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
391 for_each_test(j, t) {
392 int len = strlen(t->desc);
398 for_each_test(j, t) {
401 if (!perf_test__matches(t, curr, argc, argv))
404 pr_info("%2d: %-*s:", i, width, t->desc);
406 if (intlist__find(skiplist, i)) {
407 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
411 if (!t->subtest.get_nr) {
412 test_and_print(t, false, -1);
414 int subn = t->subtest.get_nr();
416 * minus 2 to align with normal testcases.
417 * For subtest we print additional '.x' in number.
420 * 35: Test LLVM searching and compiling :
421 * 35.1: Basic BPF llvm compiling test : Ok
423 int subw = width > 2 ? width - 2 : width;
428 color_fprintf(stderr, PERF_COLOR_YELLOW,
429 " Skip (not compiled in)\n");
434 for (subi = 0; subi < subn; subi++) {
435 int len = strlen(t->subtest.get_desc(subi));
441 for (subi = 0; subi < subn; subi++) {
442 pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
443 t->subtest.get_desc(subi));
444 err = test_and_print(t, skip, subi);
445 if (err != TEST_OK && t->subtest.skip_if_fail)
454 static int perf_test__list(int argc, const char **argv)
460 for_each_test(j, t) {
461 if (argc > 1 && !strstr(t->desc, argv[1]))
464 pr_info("%2d: %s\n", ++i, t->desc);
470 int cmd_test(int argc, const char **argv)
472 const char *test_usage[] = {
473 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
476 const char *skip = NULL;
477 const struct option test_options[] = {
478 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
479 OPT_INCR('v', "verbose", &verbose,
480 "be more verbose (show symbol address, etc)"),
481 OPT_BOOLEAN('F', "dont-fork", &dont_fork,
482 "Do not fork for testcase"),
485 const char * const test_subcommands[] = { "list", NULL };
486 struct intlist *skiplist = NULL;
487 int ret = hists__init();
492 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
493 if (argc >= 1 && !strcmp(argv[0], "list"))
494 return perf_test__list(argc, argv);
496 symbol_conf.priv_size = sizeof(int);
497 symbol_conf.sort_by_name = true;
498 symbol_conf.try_vmlinux_path = true;
500 if (symbol__init(NULL) < 0)
504 skiplist = intlist__new(skip);
506 return __cmd_test(argc, argv, skiplist);