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                 .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
 189         if (child < 0) {
 190                 pr_err("failed to fork test: %s\n", strerror(errno));
 191                 return -1;
 192         }
 193
 194         if (!child) {
 195                 pr_debug("test child forked, pid %d\n", getpid());
 196                 err = test->func();
 197                 exit(err);
 198         }
 199
 200         wait(&status);
 201
 202         if (WIFEXITED(status)) {
 203                 err = WEXITSTATUS(status);
 204                 pr_debug("test child finished with %d\n", err);
 205         } else if (WIFSIGNALED(status)) {
 206                 err = -1;
 207                 pr_debug("test child interrupted\n");
 208         }
 209
 210         return err;
 211 }
 212
 213 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
 214 {
 215         int i = 0;
 216         int width = 0;
 217
 218         while (tests[i].func) {
 219                 int len = strlen(tests[i].desc);
 220
 221                 if (width < len)
 222                         width = len;
 223                 ++i;
 224         }
 225
 226         i = 0;
 227         while (tests[i].func) {
 228                 int curr = i++, err;
 229
 230                 if (!perf_test__matches(curr, argc, argv))
 231                         continue;
 232
 233                 pr_info("%2d: %-*s:", i, width, tests[curr].desc);
 234
 235                 if (intlist__find(skiplist, i)) {
 236                         color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
 237                         continue;
 238                 }
 239
 240                 pr_debug("\n--- start ---\n");
 241                 err = run_test(&tests[curr]);
 242                 pr_debug("---- end ----\n%s:", tests[curr].desc);
 243
 244                 switch (err) {
 245                 case TEST_OK:
 246                         pr_info(" Ok\n");
 247                         break;
 248                 case TEST_SKIP:
 249                         color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
 250                         break;
 251                 case TEST_FAIL:
 252                 default:
 253                         color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
 254                         break;
 255                 }
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int perf_test__list(int argc, const char **argv)
 262 {
 263         int i = 0;
 264
 265         while (tests[i].func) {
 266                 int curr = i++;
 267
 268                 if (argc > 1 && !strstr(tests[curr].desc, argv[1]))
 269                         continue;
 270
 271                 pr_info("%2d: %s\n", i, tests[curr].desc);
 272         }
 273
 274         return 0;
 275 }
 276
 277 int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
 278 {
 279         const char * const test_usage[] = {
 280         "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
 281         NULL,
 282         };
 283         const char *skip = NULL;
 284         const struct option test_options[] = {
 285         OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
 286         OPT_INCR('v', "verbose", &verbose,
 287                     "be more verbose (show symbol address, etc)"),
 288         OPT_END()
 289         };
 290         struct intlist *skiplist = NULL;
 291
 292         argc = parse_options(argc, argv, test_options, test_usage, 0);
 293         if (argc >= 1 && !strcmp(argv[0], "list"))
 294                 return perf_test__list(argc, argv);
 295
 296         symbol_conf.priv_size = sizeof(int);
 297         symbol_conf.sort_by_name = true;
 298         symbol_conf.try_vmlinux_path = true;
 299
 300         if (symbol__init(NULL) < 0)
 301                 return -1;
 302
 303         if (skip != NULL)
 304                 skiplist = intlist__new(skip);
 305
 306         return __cmd_test(argc, argv, skiplist);
 307 }