tools/perf/tests/builtin-test.c

   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                 .desc = "Test tracking with sched_switch",
 158                 .func = test__switch_tracking,
 159         },
 160         {
 161                 .desc = "Filter fds with revents mask in a fdarray",
 162                 .func = test__fdarray__filter,
 163         },
 164         {
 165                 .desc = "Add fd to a fdarray, making it autogrow",
 166                 .func = test__fdarray__add,
 167         },
 168         {
 169                 .func = NULL,
 170         },
 171 };
 172
 173 static bool perf_test__matches(int curr, int argc, const char *argv[])
 174 {
 175         int i;
 176
 177         if (argc == 0)
 178                 return true;
 179
 180         for (i = 0; i < argc; ++i) {
 181                 char *end;
 182                 long nr = strtoul(argv[i], &end, 10);
 183
 184                 if (*end == '\0') {
 185                         if (nr == curr + 1)
 186                                 return true;
 187                         continue;
 188                 }
 189
 190                 if (strstr(tests[curr].desc, argv[i]))
 191                         return true;
 192         }
 193
 194         return false;
 195 }
 196
 197 static int run_test(struct test *test)
 198 {
 199         int status, err = -1, child = fork();
 200         char sbuf[STRERR_BUFSIZE];
 201
 202         if (child < 0) {
 203                 pr_err("failed to fork test: %s\n",
 204                         strerror_r(errno, sbuf, sizeof(sbuf)));
 205                 return -1;
 206         }
 207
 208         if (!child) {
 209                 pr_debug("test child forked, pid %d\n", getpid());
 210                 err = test->func();
 211                 exit(err);
 212         }
 213
 214         wait(&status);
 215
 216         if (WIFEXITED(status)) {
 217                 err = WEXITSTATUS(status);
 218                 pr_debug("test child finished with %d\n", err);
 219         } else if (WIFSIGNALED(status)) {
 220                 err = -1;
 221                 pr_debug("test child interrupted\n");
 222         }
 223
 224         return err;
 225 }
 226
 227 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
 228 {
 229         int i = 0;
 230         int width = 0;
 231
 232         while (tests[i].func) {
 233                 int len = strlen(tests[i].desc);
 234
 235                 if (width < len)
 236                         width = len;
 237                 ++i;
 238         }
 239
 240         i = 0;
 241         while (tests[i].func) {
 242                 int curr = i++, err;
 243
 244                 if (!perf_test__matches(curr, argc, argv))
 245                         continue;
 246
 247                 pr_info("%2d: %-*s:", i, width, tests[curr].desc);
 248
 249                 if (intlist__find(skiplist, i)) {
 250                         color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
 251                         continue;
 252                 }
 253
 254                 pr_debug("\n--- start ---\n");
 255                 err = run_test(&tests[curr]);
 256                 pr_debug("---- end ----\n%s:", tests[curr].desc);
 257
 258                 switch (err) {
 259                 case TEST_OK:
 260                         pr_info(" Ok\n");
 261                         break;
 262                 case TEST_SKIP:
 263                         color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
 264                         break;
 265                 case TEST_FAIL:
 266                 default:
 267                         color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
 268                         break;
 269                 }
 270         }
 271
 272         return 0;
 273 }
 274
 275 static int perf_test__list(int argc, const char **argv)
 276 {
 277         int i = 0;
 278
 279         while (tests[i].func) {
 280                 int curr = i++;
 281
 282                 if (argc > 1 && !strstr(tests[curr].desc, argv[1]))
 283                         continue;
 284
 285                 pr_info("%2d: %s\n", i, tests[curr].desc);
 286         }
 287
 288         return 0;
 289 }
 290
 291 int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
 292 {
 293         const char * const test_usage[] = {
 294         "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
 295         NULL,
 296         };
 297         const char *skip = NULL;
 298         const struct option test_options[] = {
 299         OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
 300         OPT_INCR('v', "verbose", &verbose,
 301                     "be more verbose (show symbol address, etc)"),
 302         OPT_END()
 303         };
 304         struct intlist *skiplist = NULL;
 305
 306         argc = parse_options(argc, argv, test_options, test_usage, 0);
 307         if (argc >= 1 && !strcmp(argv[0], "list"))
 308                 return perf_test__list(argc, argv);
 309
 310         symbol_conf.priv_size = sizeof(int);
 311         symbol_conf.sort_by_name = true;
 312         symbol_conf.try_vmlinux_path = true;
 313
 314         if (symbol__init(NULL) < 0)
 315                 return -1;
 316
 317         if (skip != NULL)
 318                 skiplist = intlist__new(skip);
 319
 320         return __cmd_test(argc, argv, skiplist);
 321 }