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