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 open syscall event", 27 .func = test__open_syscall_event, 28 }, 29 { 30 .desc = "detect open syscall event on all cpus", 31 .func = test__open_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_open event fields", 77 .func = test__syscall_open_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__) 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 .func = NULL, 171 }, 172 }; 173 174 static bool perf_test__matches(int curr, int argc, const char *argv[]) 175 { 176 int i; 177 178 if (argc == 0) 179 return true; 180 181 for (i = 0; i < argc; ++i) { 182 char *end; 183 long nr = strtoul(argv[i], &end, 10); 184 185 if (*end == '\0') { 186 if (nr == curr + 1) 187 return true; 188 continue; 189 } 190 191 if (strstr(tests[curr].desc, argv[i])) 192 return true; 193 } 194 195 return false; 196 } 197 198 static int run_test(struct test *test) 199 { 200 int status, err = -1, child = fork(); 201 char sbuf[STRERR_BUFSIZE]; 202 203 if (child < 0) { 204 pr_err("failed to fork test: %s\n", 205 strerror_r(errno, sbuf, sizeof(sbuf))); 206 return -1; 207 } 208 209 if (!child) { 210 pr_debug("test child forked, pid %d\n", getpid()); 211 err = test->func(); 212 exit(err); 213 } 214 215 wait(&status); 216 217 if (WIFEXITED(status)) { 218 err = WEXITSTATUS(status); 219 pr_debug("test child finished with %d\n", err); 220 } else if (WIFSIGNALED(status)) { 221 err = -1; 222 pr_debug("test child interrupted\n"); 223 } 224 225 return err; 226 } 227 228 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) 229 { 230 int i = 0; 231 int width = 0; 232 233 while (tests[i].func) { 234 int len = strlen(tests[i].desc); 235 236 if (width < len) 237 width = len; 238 ++i; 239 } 240 241 i = 0; 242 while (tests[i].func) { 243 int curr = i++, err; 244 245 if (!perf_test__matches(curr, argc, argv)) 246 continue; 247 248 pr_info("%2d: %-*s:", i, width, tests[curr].desc); 249 250 if (intlist__find(skiplist, i)) { 251 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); 252 continue; 253 } 254 255 pr_debug("\n--- start ---\n"); 256 err = run_test(&tests[curr]); 257 pr_debug("---- end ----\n%s:", tests[curr].desc); 258 259 switch (err) { 260 case TEST_OK: 261 pr_info(" Ok\n"); 262 break; 263 case TEST_SKIP: 264 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n"); 265 break; 266 case TEST_FAIL: 267 default: 268 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n"); 269 break; 270 } 271 } 272 273 return 0; 274 } 275 276 static int perf_test__list(int argc, const char **argv) 277 { 278 int i = 0; 279 280 while (tests[i].func) { 281 int curr = i++; 282 283 if (argc > 1 && !strstr(tests[curr].desc, argv[1])) 284 continue; 285 286 pr_info("%2d: %s\n", i, tests[curr].desc); 287 } 288 289 return 0; 290 } 291 292 int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused) 293 { 294 const char * const test_usage[] = { 295 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]", 296 NULL, 297 }; 298 const char *skip = NULL; 299 const struct option test_options[] = { 300 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"), 301 OPT_INCR('v', "verbose", &verbose, 302 "be more verbose (show symbol address, etc)"), 303 OPT_END() 304 }; 305 struct intlist *skiplist = NULL; 306 int ret = hists__init(); 307 308 if (ret < 0) 309 return ret; 310 311 argc = parse_options(argc, argv, test_options, test_usage, 0); 312 if (argc >= 1 && !strcmp(argv[0], "list")) 313 return perf_test__list(argc, argv); 314 315 symbol_conf.priv_size = sizeof(int); 316 symbol_conf.sort_by_name = true; 317 symbol_conf.try_vmlinux_path = true; 318 319 if (symbol__init(NULL) < 0) 320 return -1; 321 322 if (skip != NULL) 323 skiplist = intlist__new(skip); 324 325 return __cmd_test(argc, argv, skiplist); 326 } 327