/* * builtin-test.c * * Builtin regression testing command: ever growing number of sanity tests */ #include #include #include "builtin.h" #include "intlist.h" #include "tests.h" #include "debug.h" #include "color.h" #include "parse-options.h" #include "symbol.h" static struct test { const char *desc; int (*func)(void); } tests[] = { { .desc = "vmlinux symtab matches kallsyms", .func = test__vmlinux_matches_kallsyms, }, { .desc = "detect open syscall event", .func = test__open_syscall_event, }, { .desc = "detect open syscall event on all cpus", .func = test__open_syscall_event_on_all_cpus, }, { .desc = "read samples using the mmap interface", .func = test__basic_mmap, }, { .desc = "parse events tests", .func = test__parse_events, }, #if defined(__x86_64__) || defined(__i386__) { .desc = "x86 rdpmc test", .func = test__rdpmc, }, #endif { .desc = "Validate PERF_RECORD_* events & perf_sample fields", .func = test__PERF_RECORD, }, { .desc = "Test perf pmu format parsing", .func = test__pmu, }, { .desc = "Test dso data read", .func = test__dso_data, }, { .desc = "Test dso data cache", .func = test__dso_data_cache, }, { .desc = "Test dso data reopen", .func = test__dso_data_reopen, }, { .desc = "roundtrip evsel->name check", .func = test__perf_evsel__roundtrip_name_test, }, { .desc = "Check parsing of sched tracepoints fields", .func = test__perf_evsel__tp_sched_test, }, { .desc = "Generate and check syscalls:sys_enter_open event fields", .func = test__syscall_open_tp_fields, }, { .desc = "struct perf_event_attr setup", .func = test__attr, }, { .desc = "Test matching and linking multiple hists", .func = test__hists_link, }, { .desc = "Try 'use perf' in python, checking link problems", .func = test__python_use, }, { .desc = "Test breakpoint overflow signal handler", .func = test__bp_signal, }, { .desc = "Test breakpoint overflow sampling", .func = test__bp_signal_overflow, }, { .desc = "Test number of exit event of a simple workload", .func = test__task_exit, }, { .desc = "Test software clock events have valid period values", .func = test__sw_clock_freq, }, #if defined(__x86_64__) || defined(__i386__) { .desc = "Test converting perf time to TSC", .func = test__perf_time_to_tsc, }, #endif { .desc = "Test object code reading", .func = test__code_reading, }, { .desc = "Test sample parsing", .func = test__sample_parsing, }, { .desc = "Test using a dummy software event to keep tracking", .func = test__keep_tracking, }, { .desc = "Test parsing with no sample_id_all bit set", .func = test__parse_no_sample_id_all, }, #if defined(__x86_64__) || defined(__i386__) || defined(__arm__) #ifdef HAVE_DWARF_UNWIND_SUPPORT { .desc = "Test dwarf unwind", .func = test__dwarf_unwind, }, #endif #endif { .desc = "Test filtering hist entries", .func = test__hists_filter, }, { .desc = "Test mmap thread lookup", .func = test__mmap_thread_lookup, }, { .desc = "Test thread mg sharing", .func = test__thread_mg_share, }, { .desc = "Test output sorting of hist entries", .func = test__hists_output, }, { .desc = "Test cumulation of child hist entries", .func = test__hists_cumulate, }, { .desc = "Test tracking with sched_switch", .func = test__switch_tracking, }, { .desc = "Filter fds with revents mask in a pollfd array", .func = test__perf_evlist__filter_pollfd, }, { .desc = "Add fd to pollfd array, making it autogrow", .func = test__perf_evlist__add_pollfd, }, { .func = NULL, }, }; static bool perf_test__matches(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 (strstr(tests[curr].desc, argv[i])) return true; } return false; } static int run_test(struct test *test) { int status, err = -1, child = fork(); char sbuf[STRERR_BUFSIZE]; if (child < 0) { pr_err("failed to fork test: %s\n", strerror_r(errno, sbuf, sizeof(sbuf))); return -1; } if (!child) { pr_debug("test child forked, pid %d\n", getpid()); err = test->func(); exit(err); } wait(&status); if (WIFEXITED(status)) { err = 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; } static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) { int i = 0; int width = 0; while (tests[i].func) { int len = strlen(tests[i].desc); if (width < len) width = len; ++i; } i = 0; while (tests[i].func) { int curr = i++, err; if (!perf_test__matches(curr, argc, argv)) continue; pr_info("%2d: %-*s:", i, width, tests[curr].desc); if (intlist__find(skiplist, i)) { color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); continue; } pr_debug("\n--- start ---\n"); err = run_test(&tests[curr]); pr_debug("---- end ----\n%s:", tests[curr].desc); 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 0; } static int perf_test__list(int argc, const char **argv) { int i = 0; while (tests[i].func) { int curr = i++; if (argc > 1 && !strstr(tests[curr].desc, argv[1])) continue; pr_info("%2d: %s\n", i, tests[curr].desc); } return 0; } int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused) { const char * const 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_END() }; struct intlist *skiplist = NULL; argc = parse_options(argc, argv, test_options, 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); }