1 /* 2 * builtin-test.c 3 * 4 * Builtin regression testing command: ever growing number of sanity tests 5 */ 6 #include <unistd.h> 7 #include <string.h> 8 #include "builtin.h" 9 #include "hist.h" 10 #include "intlist.h" 11 #include "tests.h" 12 #include "debug.h" 13 #include "color.h" 14 #include "parse-options.h" 15 #include "symbol.h" 16 17 static struct test { 18 const char *desc; 19 int (*func)(void); 20 } tests[] = { 21 { 22 .desc = "vmlinux symtab matches kallsyms", 23 .func = test__vmlinux_matches_kallsyms, 24 }, 25 { 26 .desc = "detect openat syscall event", 27 .func = test__openat_syscall_event, 28 }, 29 { 30 .desc = "detect openat syscall event on all cpus", 31 .func = test__openat_syscall_event_on_all_cpus, 32 }, 33 { 34 .desc = "read samples using the mmap interface", 35 .func = test__basic_mmap, 36 }, 37 { 38 .desc = "parse events tests", 39 .func = test__parse_events, 40 }, 41 #if defined(__x86_64__) || defined(__i386__) 42 { 43 .desc = "x86 rdpmc test", 44 .func = test__rdpmc, 45 }, 46 #endif 47 { 48 .desc = "Validate PERF_RECORD_* events & perf_sample fields", 49 .func = test__PERF_RECORD, 50 }, 51 { 52 .desc = "Test perf pmu format parsing", 53 .func = test__pmu, 54 }, 55 { 56 .desc = "Test dso data read", 57 .func = test__dso_data, 58 }, 59 { 60 .desc = "Test dso data cache", 61 .func = test__dso_data_cache, 62 }, 63 { 64 .desc = "Test dso data reopen", 65 .func = test__dso_data_reopen, 66 }, 67 { 68 .desc = "roundtrip evsel->name check", 69 .func = test__perf_evsel__roundtrip_name_test, 70 }, 71 { 72 .desc = "Check parsing of sched tracepoints fields", 73 .func = test__perf_evsel__tp_sched_test, 74 }, 75 { 76 .desc = "Generate and check syscalls:sys_enter_openat event fields", 77 .func = test__syscall_openat_tp_fields, 78 }, 79 { 80 .desc = "struct perf_event_attr setup", 81 .func = test__attr, 82 }, 83 { 84 .desc = "Test matching and linking multiple hists", 85 .func = test__hists_link, 86 }, 87 { 88 .desc = "Try 'import perf' in python, checking link problems", 89 .func = test__python_use, 90 }, 91 { 92 .desc = "Test breakpoint overflow signal handler", 93 .func = test__bp_signal, 94 }, 95 { 96 .desc = "Test breakpoint overflow sampling", 97 .func = test__bp_signal_overflow, 98 }, 99 { 100 .desc = "Test number of exit event of a simple workload", 101 .func = test__task_exit, 102 }, 103 { 104 .desc = "Test software clock events have valid period values", 105 .func = test__sw_clock_freq, 106 }, 107 #if defined(__x86_64__) || defined(__i386__) 108 { 109 .desc = "Test converting perf time to TSC", 110 .func = test__perf_time_to_tsc, 111 }, 112 #endif 113 { 114 .desc = "Test object code reading", 115 .func = test__code_reading, 116 }, 117 { 118 .desc = "Test sample parsing", 119 .func = test__sample_parsing, 120 }, 121 { 122 .desc = "Test using a dummy software event to keep tracking", 123 .func = test__keep_tracking, 124 }, 125 { 126 .desc = "Test parsing with no sample_id_all bit set", 127 .func = test__parse_no_sample_id_all, 128 }, 129 #if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__) 130 #ifdef HAVE_DWARF_UNWIND_SUPPORT 131 { 132 .desc = "Test dwarf unwind", 133 .func = test__dwarf_unwind, 134 }, 135 #endif 136 #endif 137 { 138 .desc = "Test filtering hist entries", 139 .func = test__hists_filter, 140 }, 141 { 142 .desc = "Test mmap thread lookup", 143 .func = test__mmap_thread_lookup, 144 }, 145 { 146 .desc = "Test thread mg sharing", 147 .func = test__thread_mg_share, 148 }, 149 { 150 .desc = "Test output sorting of hist entries", 151 .func = test__hists_output, 152 }, 153 { 154 .desc = "Test cumulation of child hist entries", 155 .func = test__hists_cumulate, 156 }, 157 { 158 .desc = "Test tracking with sched_switch", 159 .func = test__switch_tracking, 160 }, 161 { 162 .desc = "Filter fds with revents mask in a fdarray", 163 .func = test__fdarray__filter, 164 }, 165 { 166 .desc = "Add fd to a fdarray, making it autogrow", 167 .func = test__fdarray__add, 168 }, 169 { 170 .desc = "Test kmod_path__parse function", 171 .func = test__kmod_path__parse, 172 }, 173 { 174 .func = NULL, 175 }, 176 }; 177 178 static bool perf_test__matches(int curr, int argc, const char *argv[]) 179 { 180 int i; 181 182 if (argc == 0) 183 return true; 184 185 for (i = 0; i < argc; ++i) { 186 char *end; 187 long nr = strtoul(argv[i], &end, 10); 188 189 if (*end == '\0') { 190 if (nr == curr + 1) 191 return true; 192 continue; 193 } 194 195 if (strstr(tests[curr].desc, argv[i])) 196 return true; 197 } 198 199 return false; 200 } 201 202 static int run_test(struct test *test) 203 { 204 int status, err = -1, child = fork(); 205 char sbuf[STRERR_BUFSIZE]; 206 207 if (child < 0) { 208 pr_err("failed to fork test: %s\n", 209 strerror_r(errno, sbuf, sizeof(sbuf))); 210 return -1; 211 } 212 213 if (!child) { 214 pr_debug("test child forked, pid %d\n", getpid()); 215 err = test->func(); 216 exit(err); 217 } 218 219 wait(&status); 220 221 if (WIFEXITED(status)) { 222 err = (signed char)WEXITSTATUS(status); 223 pr_debug("test child finished with %d\n", err); 224 } else if (WIFSIGNALED(status)) { 225 err = -1; 226 pr_debug("test child interrupted\n"); 227 } 228 229 return err; 230 } 231 232 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) 233 { 234 int i = 0; 235 int width = 0; 236 237 while (tests[i].func) { 238 int len = strlen(tests[i].desc); 239 240 if (width < len) 241 width = len; 242 ++i; 243 } 244 245 i = 0; 246 while (tests[i].func) { 247 int curr = i++, err; 248 249 if (!perf_test__matches(curr, argc, argv)) 250 continue; 251 252 pr_info("%2d: %-*s:", i, width, tests[curr].desc); 253 254 if (intlist__find(skiplist, i)) { 255 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); 256 continue; 257 } 258 259 pr_debug("\n--- start ---\n"); 260 err = run_test(&tests[curr]); 261 pr_debug("---- end ----\n%s:", tests[curr].desc); 262 263 switch (err) { 264 case TEST_OK: 265 pr_info(" Ok\n"); 266 break; 267 case TEST_SKIP: 268 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n"); 269 break; 270 case TEST_FAIL: 271 default: 272 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n"); 273 break; 274 } 275 } 276 277 return 0; 278 } 279 280 static int perf_test__list(int argc, const char **argv) 281 { 282 int i = 0; 283 284 while (tests[i].func) { 285 int curr = i++; 286 287 if (argc > 1 && !strstr(tests[curr].desc, argv[1])) 288 continue; 289 290 pr_info("%2d: %s\n", i, tests[curr].desc); 291 } 292 293 return 0; 294 } 295 296 int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused) 297 { 298 const char *test_usage[] = { 299 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]", 300 NULL, 301 }; 302 const char *skip = NULL; 303 const struct option test_options[] = { 304 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"), 305 OPT_INCR('v', "verbose", &verbose, 306 "be more verbose (show symbol address, etc)"), 307 OPT_END() 308 }; 309 const char * const test_subcommands[] = { "list", NULL }; 310 struct intlist *skiplist = NULL; 311 int ret = hists__init(); 312 313 if (ret < 0) 314 return ret; 315 316 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0); 317 if (argc >= 1 && !strcmp(argv[0], "list")) 318 return perf_test__list(argc, argv); 319 320 symbol_conf.priv_size = sizeof(int); 321 symbol_conf.sort_by_name = true; 322 symbol_conf.try_vmlinux_path = true; 323 324 if (symbol__init(NULL) < 0) 325 return -1; 326 327 if (skip != NULL) 328 skiplist = intlist__new(skip); 329 330 return __cmd_test(argc, argv, skiplist); 331 } 332