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