/* * builtin-test.c * * Builtin regression testing command: ever growing number of sanity tests */ #include #include #include #include #include "builtin.h" #include "hist.h" #include "intlist.h" #include "tests.h" #include "debug.h" #include "color.h" #include #include "symbol.h" #include 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 = "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 = "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 = "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 mg", .func = test__thread_mg_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 = "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, }, { .func = NULL, }, }; static struct test *tests[] = { generic_tests, arch_tests, }; static bool perf_test__matches(struct test *test, 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(test->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); switch (err) { case TEST_OK: pr_info(" Ok\n"); break; case TEST_SKIP: 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 int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) { struct test *t; unsigned int j; int i = 0; int width = 0; for_each_test(j, t) { int len = strlen(t->desc); if (width < len) width = len; } for_each_test(j, t) { int curr = i++, err; if (!perf_test__matches(t, curr, argc, argv)) 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; int subi; 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++) { 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 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) { ++i; if (argc > 1 && !strstr(t->desc, argv[1])) continue; pr_info("%2d: %s\n", i, t->desc); } return 0; } int cmd_test(int argc, const char **argv) { const char *test_usage[] = { "perf test [] [{list |[|]}]", 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; 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, argv); 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); return __cmd_test(argc, argv, skiplist); }