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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 <subcmd/parse-options.h>
15#include "symbol.h"
16
17static bool dont_fork;
18
19struct test __weak arch_tests[] = {
20 {
21 .func = NULL,
22 },
23};
24
25static struct test generic_tests[] = {
26 {
27 .desc = "vmlinux symtab matches kallsyms",
28 .func = test__vmlinux_matches_kallsyms,
29 },
30 {
31 .desc = "detect openat syscall event",
32 .func = test__openat_syscall_event,
33 },
34 {
35 .desc = "detect openat syscall event on all cpus",
36 .func = test__openat_syscall_event_on_all_cpus,
37 },
38 {
39 .desc = "read samples using the mmap interface",
40 .func = test__basic_mmap,
41 },
42 {
43 .desc = "parse events tests",
44 .func = test__parse_events,
45 },
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_openat event fields",
76 .func = test__syscall_openat_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 'import 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 {
107 .desc = "Test object code reading",
108 .func = test__code_reading,
109 },
110 {
111 .desc = "Test sample parsing",
112 .func = test__sample_parsing,
113 },
114 {
115 .desc = "Test using a dummy software event to keep tracking",
116 .func = test__keep_tracking,
117 },
118 {
119 .desc = "Test parsing with no sample_id_all bit set",
120 .func = test__parse_no_sample_id_all,
121 },
122 {
123 .desc = "Test filtering hist entries",
124 .func = test__hists_filter,
125 },
126 {
127 .desc = "Test mmap thread lookup",
128 .func = test__mmap_thread_lookup,
129 },
130 {
131 .desc = "Test thread mg sharing",
132 .func = test__thread_mg_share,
133 },
134 {
135 .desc = "Test output sorting of hist entries",
136 .func = test__hists_output,
137 },
138 {
139 .desc = "Test cumulation of child hist entries",
140 .func = test__hists_cumulate,
141 },
142 {
143 .desc = "Test tracking with sched_switch",
144 .func = test__switch_tracking,
145 },
146 {
147 .desc = "Filter fds with revents mask in a fdarray",
148 .func = test__fdarray__filter,
149 },
150 {
151 .desc = "Add fd to a fdarray, making it autogrow",
152 .func = test__fdarray__add,
153 },
154 {
155 .desc = "Test kmod_path__parse function",
156 .func = test__kmod_path__parse,
157 },
158 {
159 .desc = "Test thread map",
160 .func = test__thread_map,
161 },
162 {
163 .desc = "Test LLVM searching and compiling",
164 .func = test__llvm,
165 .subtest = {
166 .skip_if_fail = true,
167 .get_nr = test__llvm_subtest_get_nr,
168 .get_desc = test__llvm_subtest_get_desc,
169 },
170 },
171 {
172 .desc = "Test topology in session",
173 .func = test_session_topology,
174 },
175 {
176 .desc = "Test BPF filter",
177 .func = test__bpf,
178 .subtest = {
179 .skip_if_fail = true,
180 .get_nr = test__bpf_subtest_get_nr,
181 .get_desc = test__bpf_subtest_get_desc,
182 },
183 },
184 {
185 .desc = "Test thread map synthesize",
186 .func = test__thread_map_synthesize,
187 },
188 {
189 .desc = "Test cpu map synthesize",
190 .func = test__cpu_map_synthesize,
191 },
192 {
193 .desc = "Test stat config synthesize",
194 .func = test__synthesize_stat_config,
195 },
196 {
197 .desc = "Test stat synthesize",
198 .func = test__synthesize_stat,
199 },
200 {
201 .desc = "Test stat round synthesize",
202 .func = test__synthesize_stat_round,
203 },
204 {
205 .desc = "Test attr update synthesize",
206 .func = test__event_update,
207 },
208 {
209 .desc = "Test events times",
210 .func = test__event_times,
211 },
212 {
213 .desc = "Test backward reading from ring buffer",
214 .func = test__backward_ring_buffer,
215 },
216 {
217 .desc = "Test cpu map print",
218 .func = test__cpu_map_print,
219 },
220 {
221 .desc = "Test SDT event probing",
222 .func = test__sdt_event,
223 },
224 {
225 .desc = "Test is_printable_array function",
226 .func = test__is_printable_array,
227 },
228 {
229 .desc = "Test bitmap print",
230 .func = test__bitmap_print,
231 },
232 {
233 .func = NULL,
234 },
235};
236
237static struct test *tests[] = {
238 generic_tests,
239 arch_tests,
240};
241
242static bool perf_test__matches(struct test *test, int curr, int argc, const char *argv[])
243{
244 int i;
245
246 if (argc == 0)
247 return true;
248
249 for (i = 0; i < argc; ++i) {
250 char *end;
251 long nr = strtoul(argv[i], &end, 10);
252
253 if (*end == '\0') {
254 if (nr == curr + 1)
255 return true;
256 continue;
257 }
258
259 if (strcasestr(test->desc, argv[i]))
260 return true;
261 }
262
263 return false;
264}
265
266static int run_test(struct test *test, int subtest)
267{
268 int status, err = -1, child = dont_fork ? 0 : fork();
269 char sbuf[STRERR_BUFSIZE];
270
271 if (child < 0) {
272 pr_err("failed to fork test: %s\n",
273 str_error_r(errno, sbuf, sizeof(sbuf)));
274 return -1;
275 }
276
277 if (!child) {
278 if (!dont_fork) {
279 pr_debug("test child forked, pid %d\n", getpid());
280
281 if (!verbose) {
282 int nullfd = open("/dev/null", O_WRONLY);
283
284 if (nullfd >= 0) {
285 close(STDERR_FILENO);
286 close(STDOUT_FILENO);
287
288 dup2(nullfd, STDOUT_FILENO);
289 dup2(STDOUT_FILENO, STDERR_FILENO);
290 close(nullfd);
291 }
292 } else {
293 signal(SIGSEGV, sighandler_dump_stack);
294 signal(SIGFPE, sighandler_dump_stack);
295 }
296 }
297
298 err = test->func(subtest);
299 if (!dont_fork)
300 exit(err);
301 }
302
303 if (!dont_fork) {
304 wait(&status);
305
306 if (WIFEXITED(status)) {
307 err = (signed char)WEXITSTATUS(status);
308 pr_debug("test child finished with %d\n", err);
309 } else if (WIFSIGNALED(status)) {
310 err = -1;
311 pr_debug("test child interrupted\n");
312 }
313 }
314
315 return err;
316}
317
318#define for_each_test(j, t) \
319 for (j = 0; j < ARRAY_SIZE(tests); j++) \
320 for (t = &tests[j][0]; t->func; t++)
321
322static int test_and_print(struct test *t, bool force_skip, int subtest)
323{
324 int err;
325
326 if (!force_skip) {
327 pr_debug("\n--- start ---\n");
328 err = run_test(t, subtest);
329 pr_debug("---- end ----\n");
330 } else {
331 pr_debug("\n--- force skipped ---\n");
332 err = TEST_SKIP;
333 }
334
335 if (!t->subtest.get_nr)
336 pr_debug("%s:", t->desc);
337 else
338 pr_debug("%s subtest %d:", t->desc, subtest);
339
340 switch (err) {
341 case TEST_OK:
342 pr_info(" Ok\n");
343 break;
344 case TEST_SKIP:
345 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
346 break;
347 case TEST_FAIL:
348 default:
349 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
350 break;
351 }
352
353 return err;
354}
355
356static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
357{
358 struct test *t;
359 unsigned int j;
360 int i = 0;
361 int width = 0;
362
363 for_each_test(j, t) {
364 int len = strlen(t->desc);
365
366 if (width < len)
367 width = len;
368 }
369
370 for_each_test(j, t) {
371 int curr = i++, err;
372
373 if (!perf_test__matches(t, curr, argc, argv))
374 continue;
375
376 pr_info("%2d: %-*s:", i, width, t->desc);
377
378 if (intlist__find(skiplist, i)) {
379 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
380 continue;
381 }
382
383 if (!t->subtest.get_nr) {
384 test_and_print(t, false, -1);
385 } else {
386 int subn = t->subtest.get_nr();
387
388
389
390
391
392
393
394
395 int subw = width > 2 ? width - 2 : width;
396 bool skip = false;
397 int subi;
398
399 if (subn <= 0) {
400 color_fprintf(stderr, PERF_COLOR_YELLOW,
401 " Skip (not compiled in)\n");
402 continue;
403 }
404 pr_info("\n");
405
406 for (subi = 0; subi < subn; subi++) {
407 int len = strlen(t->subtest.get_desc(subi));
408
409 if (subw < len)
410 subw = len;
411 }
412
413 for (subi = 0; subi < subn; subi++) {
414 pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
415 t->subtest.get_desc(subi));
416 err = test_and_print(t, skip, subi);
417 if (err != TEST_OK && t->subtest.skip_if_fail)
418 skip = true;
419 }
420 }
421 }
422
423 return 0;
424}
425
426static int perf_test__list(int argc, const char **argv)
427{
428 unsigned int j;
429 struct test *t;
430 int i = 0;
431
432 for_each_test(j, t) {
433 if (argc > 1 && !strstr(t->desc, argv[1]))
434 continue;
435
436 pr_info("%2d: %s\n", ++i, t->desc);
437 }
438
439 return 0;
440}
441
442int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
443{
444 const char *test_usage[] = {
445 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
446 NULL,
447 };
448 const char *skip = NULL;
449 const struct option test_options[] = {
450 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
451 OPT_INCR('v', "verbose", &verbose,
452 "be more verbose (show symbol address, etc)"),
453 OPT_BOOLEAN('F', "dont-fork", &dont_fork,
454 "Do not fork for testcase"),
455 OPT_END()
456 };
457 const char * const test_subcommands[] = { "list", NULL };
458 struct intlist *skiplist = NULL;
459 int ret = hists__init();
460
461 if (ret < 0)
462 return ret;
463
464 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
465 if (argc >= 1 && !strcmp(argv[0], "list"))
466 return perf_test__list(argc, argv);
467
468 symbol_conf.priv_size = sizeof(int);
469 symbol_conf.sort_by_name = true;
470 symbol_conf.try_vmlinux_path = true;
471
472 if (symbol__init(NULL) < 0)
473 return -1;
474
475 if (skip != NULL)
476 skiplist = intlist__new(skip);
477
478 return __cmd_test(argc, argv, skiplist);
479}
480
