summaryrefslogtreecommitdiff
path: root/tools/perf/tests/builtin-test.c
blob: cac8f8889bc3b540355963ee793fb0e4aadbfd12 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
// SPDX-License-Identifier: GPL-2.0
/*
 * builtin-test.c
 *
 * Builtin regression testing command: ever growing number of sanity tests
 */
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include "builtin.h"
#include "hist.h"
#include "intlist.h"
#include "tests.h"
#include "debug.h"
#include "color.h"
#include <subcmd/parse-options.h>
#include "string2.h"
#include "symbol.h"
#include <linux/kernel.h>
#include <subcmd/exec-cmd.h>

static bool dont_fork;

struct test __weak arch_tests[] = {
	{
		.func = NULL,
	},
};

static struct test generic_tests[] = {
	{
		.desc = "vmlinux symtab matches kallsyms",
		.func = test__vmlinux_matches_kallsyms,
	},
	{
		.desc = "Detect openat syscall event",
		.func = test__openat_syscall_event,
	},
	{
		.desc = "Detect openat syscall event on all cpus",
		.func = test__openat_syscall_event_on_all_cpus,
	},
	{
		.desc = "Read samples using the mmap interface",
		.func = test__basic_mmap,
	},
	{
		.desc = "Test data source output",
		.func = test__mem,
	},
	{
		.desc = "Parse event definition strings",
		.func = test__parse_events,
	},
	{
		.desc = "Simple expression parser",
		.func = test__expr,
	},
	{
		.desc = "PERF_RECORD_* events & perf_sample fields",
		.func = test__PERF_RECORD,
	},
	{
		.desc = "Parse perf pmu format",
		.func = test__pmu,
	},
	{
		.desc = "DSO data read",
		.func = test__dso_data,
	},
	{
		.desc = "DSO data cache",
		.func = test__dso_data_cache,
	},
	{
		.desc = "DSO data reopen",
		.func = test__dso_data_reopen,
	},
	{
		.desc = "Roundtrip evsel->name",
		.func = test__perf_evsel__roundtrip_name_test,
	},
	{
		.desc = "Parse sched tracepoints fields",
		.func = test__perf_evsel__tp_sched_test,
	},
	{
		.desc = "syscalls:sys_enter_openat event fields",
		.func = test__syscall_openat_tp_fields,
	},
	{
		.desc = "Setup struct perf_event_attr",
		.func = test__attr,
	},
	{
		.desc = "Match and link multiple hists",
		.func = test__hists_link,
	},
	{
		.desc = "'import perf' in python",
		.func = test__python_use,
	},
	{
		.desc = "Breakpoint overflow signal handler",
		.func = test__bp_signal,
		.is_supported = test__bp_signal_is_supported,
	},
	{
		.desc = "Breakpoint overflow sampling",
		.func = test__bp_signal_overflow,
		.is_supported = test__bp_signal_is_supported,
	},
	{
		.desc = "Breakpoint accounting",
		.func = test__bp_accounting,
		.is_supported = test__bp_signal_is_supported,
	},
	{
		.desc = "Number of exit events of a simple workload",
		.func = test__task_exit,
	},
	{
		.desc = "Software clock events period values",
		.func = test__sw_clock_freq,
	},
	{
		.desc = "Object code reading",
		.func = test__code_reading,
	},
	{
		.desc = "Sample parsing",
		.func = test__sample_parsing,
	},
	{
		.desc = "Use a dummy software event to keep tracking",
		.func = test__keep_tracking,
	},
	{
		.desc = "Parse with no sample_id_all bit set",
		.func = test__parse_no_sample_id_all,
	},
	{
		.desc = "Filter hist entries",
		.func = test__hists_filter,
	},
	{
		.desc = "Lookup mmap thread",
		.func = test__mmap_thread_lookup,
	},
	{
		.desc = "Share thread mg",
		.func = test__thread_mg_share,
	},
	{
		.desc = "Sort output of hist entries",
		.func = test__hists_output,
	},
	{
		.desc = "Cumulate child hist entries",
		.func = test__hists_cumulate,
	},
	{
		.desc = "Track with sched_switch",
		.func = test__switch_tracking,
	},
	{
		.desc = "Filter fds with revents mask in a fdarray",
		.func = test__fdarray__filter,
	},
	{
		.desc = "Add fd to a fdarray, making it autogrow",
		.func = test__fdarray__add,
	},
	{
		.desc = "kmod_path__parse",
		.func = test__kmod_path__parse,
	},
	{
		.desc = "Thread map",
		.func = test__thread_map,
	},
	{
		.desc = "LLVM search and compile",
		.func = test__llvm,
		.subtest = {
			.skip_if_fail	= true,
			.get_nr		= test__llvm_subtest_get_nr,
			.get_desc	= test__llvm_subtest_get_desc,
		},
	},
	{
		.desc = "Session topology",
		.func = test__session_topology,
	},
	{
		.desc = "BPF filter",
		.func = test__bpf,
		.subtest = {
			.skip_if_fail	= true,
			.get_nr		= test__bpf_subtest_get_nr,
			.get_desc	= test__bpf_subtest_get_desc,
		},
	},
	{
		.desc = "Synthesize thread map",
		.func = test__thread_map_synthesize,
	},
	{
		.desc = "Remove thread map",
		.func = test__thread_map_remove,
	},
	{
		.desc = "Synthesize cpu map",
		.func = test__cpu_map_synthesize,
	},
	{
		.desc = "Synthesize stat config",
		.func = test__synthesize_stat_config,
	},
	{
		.desc = "Synthesize stat",
		.func = test__synthesize_stat,
	},
	{
		.desc = "Synthesize stat round",
		.func = test__synthesize_stat_round,
	},
	{
		.desc = "Synthesize attr update",
		.func = test__event_update,
	},
	{
		.desc = "Event times",
		.func = test__event_times,
	},
	{
		.desc = "Read backward ring buffer",
		.func = test__backward_ring_buffer,
	},
	{
		.desc = "Print cpu map",
		.func = test__cpu_map_print,
	},
	{
		.desc = "Probe SDT events",
		.func = test__sdt_event,
	},
	{
		.desc = "is_printable_array",
		.func = test__is_printable_array,
	},
	{
		.desc = "Print bitmap",
		.func = test__bitmap_print,
	},
	{
		.desc = "perf hooks",
		.func = test__perf_hooks,
	},
	{
		.desc = "builtin clang support",
		.func = test__clang,
		.subtest = {
			.skip_if_fail	= true,
			.get_nr		= test__clang_subtest_get_nr,
			.get_desc	= test__clang_subtest_get_desc,
		}
	},
	{
		.desc = "unit_number__scnprintf",
		.func = test__unit_number__scnprint,
	},
	{
		.desc = "mem2node",
		.func = test__mem2node,
	},
	{
		.func = NULL,
	},
};

static struct test *tests[] = {
	generic_tests,
	arch_tests,
};

static bool perf_test__matches(struct test *test, int curr, int argc, const char *argv[])
{
	int i;

	if (argc == 0)
		return true;

	for (i = 0; i < argc; ++i) {
		char *end;
		long nr = strtoul(argv[i], &end, 10);

		if (*end == '\0') {
			if (nr == curr + 1)
				return true;
			continue;
		}

		if (strcasestr(test->desc, argv[i]))
			return true;
	}

	return false;
}

static int run_test(struct test *test, int subtest)
{
	int status, err = -1, child = dont_fork ? 0 : fork();
	char sbuf[STRERR_BUFSIZE];

	if (child < 0) {
		pr_err("failed to fork test: %s\n",
			str_error_r(errno, sbuf, sizeof(sbuf)));
		return -1;
	}

	if (!child) {
		if (!dont_fork) {
			pr_debug("test child forked, pid %d\n", getpid());

			if (verbose <= 0) {
				int nullfd = open("/dev/null", O_WRONLY);

				if (nullfd >= 0) {
					close(STDERR_FILENO);
					close(STDOUT_FILENO);

					dup2(nullfd, STDOUT_FILENO);
					dup2(STDOUT_FILENO, STDERR_FILENO);
					close(nullfd);
				}
			} else {
				signal(SIGSEGV, sighandler_dump_stack);
				signal(SIGFPE, sighandler_dump_stack);
			}
		}

		err = test->func(test, subtest);
		if (!dont_fork)
			exit(err);
	}

	if (!dont_fork) {
		wait(&status);

		if (WIFEXITED(status)) {
			err = (signed char)WEXITSTATUS(status);
			pr_debug("test child finished with %d\n", err);
		} else if (WIFSIGNALED(status)) {
			err = -1;
			pr_debug("test child interrupted\n");
		}
	}

	return err;
}

#define for_each_test(j, t)	 				\
	for (j = 0; j < ARRAY_SIZE(tests); j++)	\
		for (t = &tests[j][0]; t->func; t++)

static int test_and_print(struct test *t, bool force_skip, int subtest)
{
	int err;

	if (!force_skip) {
		pr_debug("\n--- start ---\n");
		err = run_test(t, subtest);
		pr_debug("---- end ----\n");
	} else {
		pr_debug("\n--- force skipped ---\n");
		err = TEST_SKIP;
	}

	if (!t->subtest.get_nr)
		pr_debug("%s:", t->desc);
	else
		pr_debug("%s subtest %d:", t->desc, subtest);

	switch (err) {
	case TEST_OK:
		pr_info(" Ok\n");
		break;
	case TEST_SKIP:
		color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
		break;
	case TEST_FAIL:
	default:
		color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
		break;
	}

	return err;
}

static const char *shell_test__description(char *description, size_t size,
					   const char *path, const char *name)
{
	FILE *fp;
	char filename[PATH_MAX];

	path__join(filename, sizeof(filename), path, name);
	fp = fopen(filename, "r");
	if (!fp)
		return NULL;

	description = fgets(description, size, fp);
	fclose(fp);

	return description ? trim(description + 1) : NULL;
}

#define for_each_shell_test(dir, base, ent)	\
	while ((ent = readdir(dir)) != NULL)	\
		if (!is_directory(base, ent))

static const char *shell_tests__dir(char *path, size_t size)
{
	const char *devel_dirs[] = { "./tools/perf/tests", "./tests", };
        char *exec_path;
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(devel_dirs); ++i) {
		struct stat st;
		if (!lstat(devel_dirs[i], &st)) {
			scnprintf(path, size, "%s/shell", devel_dirs[i]);
			if (!lstat(devel_dirs[i], &st))
				return path;
		}
	}

        /* Then installed path. */
        exec_path = get_argv_exec_path();
        scnprintf(path, size, "%s/tests/shell", exec_path);
	free(exec_path);
	return path;
}

static int shell_tests__max_desc_width(void)
{
	DIR *dir;
	struct dirent *ent;
	char path_dir[PATH_MAX];
	const char *path = shell_tests__dir(path_dir, sizeof(path_dir));
	int width = 0;

	if (path == NULL)
		return -1;

	dir = opendir(path);
	if (!dir)
		return -1;

	for_each_shell_test(dir, path, ent) {
		char bf[256];
		const char *desc = shell_test__description(bf, sizeof(bf), path, ent->d_name);

		if (desc) {
			int len = strlen(desc);

			if (width < len)
				width = len;
		}
	}

	closedir(dir);
	return width;
}

struct shell_test {
	const char *dir;
	const char *file;
};

static int shell_test__run(struct test *test, int subdir __maybe_unused)
{
	int err;
	char script[PATH_MAX];
	struct shell_test *st = test->priv;

	path__join(script, sizeof(script), st->dir, st->file);

	err = system(script);
	if (!err)
		return TEST_OK;

	return WEXITSTATUS(err) == 2 ? TEST_SKIP : TEST_FAIL;
}

static int run_shell_tests(int argc, const char *argv[], int i, int width)
{
	DIR *dir;
	struct dirent *ent;
	char path_dir[PATH_MAX];
	struct shell_test st = {
		.dir = shell_tests__dir(path_dir, sizeof(path_dir)),
	};

	if (st.dir == NULL)
		return -1;

	dir = opendir(st.dir);
	if (!dir)
		return -1;

	for_each_shell_test(dir, st.dir, ent) {
		int curr = i++;
		char desc[256];
		struct test test = {
			.desc = shell_test__description(desc, sizeof(desc), st.dir, ent->d_name),
			.func = shell_test__run,
			.priv = &st,
		};

		if (!perf_test__matches(&test, curr, argc, argv))
			continue;

		st.file = ent->d_name;
		pr_info("%2d: %-*s:", i, width, test.desc);
		test_and_print(&test, false, -1);
	}

	closedir(dir);
	return 0;
}

static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
{
	struct test *t;
	unsigned int j;
	int i = 0;
	int width = shell_tests__max_desc_width();

	for_each_test(j, t) {
		int len = strlen(t->desc);

		if (width < len)
			width = len;
	}

	for_each_test(j, t) {
		int curr = i++, err;

		if (!perf_test__matches(t, curr, argc, argv))
			continue;

		if (t->is_supported && !t->is_supported()) {
			pr_debug("%2d: %-*s: Disabled\n", i, width, t->desc);
			continue;
		}

		pr_info("%2d: %-*s:", i, width, t->desc);

		if (intlist__find(skiplist, i)) {
			color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
			continue;
		}

		if (!t->subtest.get_nr) {
			test_and_print(t, false, -1);
		} else {
			int subn = t->subtest.get_nr();
			/*
			 * minus 2 to align with normal testcases.
			 * For subtest we print additional '.x' in number.
			 * for example:
			 *
			 * 35: Test LLVM searching and compiling                        :
			 * 35.1: Basic BPF llvm compiling test                          : Ok
			 */
			int subw = width > 2 ? width - 2 : width;
			bool skip = false;
			int subi;

			if (subn <= 0) {
				color_fprintf(stderr, PERF_COLOR_YELLOW,
					      " Skip (not compiled in)\n");
				continue;
			}
			pr_info("\n");

			for (subi = 0; subi < subn; subi++) {
				int len = strlen(t->subtest.get_desc(subi));

				if (subw < len)
					subw = len;
			}

			for (subi = 0; subi < subn; subi++) {
				pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
					t->subtest.get_desc(subi));
				err = test_and_print(t, skip, subi);
				if (err != TEST_OK && t->subtest.skip_if_fail)
					skip = true;
			}
		}
	}

	return run_shell_tests(argc, argv, i, width);
}

static int perf_test__list_shell(int argc, const char **argv, int i)
{
	DIR *dir;
	struct dirent *ent;
	char path_dir[PATH_MAX];
	const char *path = shell_tests__dir(path_dir, sizeof(path_dir));

	if (path == NULL)
		return -1;

	dir = opendir(path);
	if (!dir)
		return -1;

	for_each_shell_test(dir, path, ent) {
		int curr = i++;
		char bf[256];
		struct test t = {
			.desc = shell_test__description(bf, sizeof(bf), path, ent->d_name),
		};

		if (!perf_test__matches(&t, curr, argc, argv))
			continue;

		pr_info("%2d: %s\n", i, t.desc);
	}

	closedir(dir);
	return 0;
}

static int perf_test__list(int argc, const char **argv)
{
	unsigned int j;
	struct test *t;
	int i = 0;

	for_each_test(j, t) {
		int curr = i++;

		if (!perf_test__matches(t, curr, argc, argv) ||
		    (t->is_supported && !t->is_supported()))
			continue;

		pr_info("%2d: %s\n", i, t->desc);
	}

	perf_test__list_shell(argc, argv, i);

	return 0;
}

int cmd_test(int argc, const char **argv)
{
	const char *test_usage[] = {
	"perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
	NULL,
	};
	const char *skip = NULL;
	const struct option test_options[] = {
	OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
	OPT_INCR('v', "verbose", &verbose,
		    "be more verbose (show symbol address, etc)"),
	OPT_BOOLEAN('F', "dont-fork", &dont_fork,
		    "Do not fork for testcase"),
	OPT_END()
	};
	const char * const test_subcommands[] = { "list", NULL };
	struct intlist *skiplist = NULL;
        int ret = hists__init();

        if (ret < 0)
                return ret;

	argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
	if (argc >= 1 && !strcmp(argv[0], "list"))
		return perf_test__list(argc - 1, argv + 1);

	symbol_conf.priv_size = sizeof(int);
	symbol_conf.sort_by_name = true;
	symbol_conf.try_vmlinux_path = true;

	if (symbol__init(NULL) < 0)
		return -1;

	if (skip != NULL)
		skiplist = intlist__new(skip);

	return __cmd_test(argc, argv, skiplist);
}