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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * builtin-test.c
4 *
5 * Builtin regression testing command: ever growing number of sanity tests
6 */
7#include <fcntl.h>
8#include <errno.h>
9#include <poll.h>
10#include <unistd.h>
11#include <string.h>
12#include <stdlib.h>
13#include <sys/types.h>
14#include <dirent.h>
15#include <sys/wait.h>
16#include <sys/stat.h>
17#include "builtin.h"
18#include "config.h"
19#include "hist.h"
20#include "intlist.h"
21#include "tests.h"
22#include "debug.h"
23#include "color.h"
24#include <subcmd/parse-options.h>
25#include <subcmd/run-command.h>
26#include "string2.h"
27#include "symbol.h"
28#include "util/rlimit.h"
29#include "util/strbuf.h"
30#include <linux/kernel.h>
31#include <linux/string.h>
32#include <subcmd/exec-cmd.h>
33#include <linux/zalloc.h>
34
35#include "tests-scripts.h"
36
37/*
38 * Command line option to not fork the test running in the same process and
39 * making them easier to debug.
40 */
41static bool dont_fork;
42/* Fork the tests in parallel and then wait for their completion. */
43static bool parallel;
44const char *dso_to_test;
45const char *test_objdump_path = "objdump";
46
47/*
48 * List of architecture specific tests. Not a weak symbol as the array length is
49 * dependent on the initialization, as such GCC with LTO complains of
50 * conflicting definitions with a weak symbol.
51 */
52#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
53extern struct test_suite *arch_tests[];
54#else
55static struct test_suite *arch_tests[] = {
56 NULL,
57};
58#endif
59
60static struct test_suite *generic_tests[] = {
61 &suite__vmlinux_matches_kallsyms,
62#ifdef HAVE_LIBTRACEEVENT
63 &suite__openat_syscall_event,
64 &suite__openat_syscall_event_on_all_cpus,
65 &suite__basic_mmap,
66#endif
67 &suite__mem,
68 &suite__parse_events,
69 &suite__expr,
70 &suite__PERF_RECORD,
71 &suite__pmu,
72 &suite__pmu_events,
73 &suite__dso_data,
74 &suite__perf_evsel__roundtrip_name_test,
75#ifdef HAVE_LIBTRACEEVENT
76 &suite__perf_evsel__tp_sched_test,
77 &suite__syscall_openat_tp_fields,
78#endif
79 &suite__attr,
80 &suite__hists_link,
81 &suite__python_use,
82 &suite__bp_signal,
83 &suite__bp_signal_overflow,
84 &suite__bp_accounting,
85 &suite__wp,
86 &suite__task_exit,
87 &suite__sw_clock_freq,
88 &suite__code_reading,
89 &suite__sample_parsing,
90 &suite__keep_tracking,
91 &suite__parse_no_sample_id_all,
92 &suite__hists_filter,
93 &suite__mmap_thread_lookup,
94 &suite__thread_maps_share,
95 &suite__hists_output,
96 &suite__hists_cumulate,
97#ifdef HAVE_LIBTRACEEVENT
98 &suite__switch_tracking,
99#endif
100 &suite__fdarray__filter,
101 &suite__fdarray__add,
102 &suite__kmod_path__parse,
103 &suite__thread_map,
104 &suite__session_topology,
105 &suite__thread_map_synthesize,
106 &suite__thread_map_remove,
107 &suite__cpu_map,
108 &suite__synthesize_stat_config,
109 &suite__synthesize_stat,
110 &suite__synthesize_stat_round,
111 &suite__event_update,
112 &suite__event_times,
113 &suite__backward_ring_buffer,
114 &suite__sdt_event,
115 &suite__is_printable_array,
116 &suite__bitmap_print,
117 &suite__perf_hooks,
118 &suite__unit_number__scnprint,
119 &suite__mem2node,
120 &suite__time_utils,
121 &suite__jit_write_elf,
122 &suite__pfm,
123 &suite__api_io,
124 &suite__maps__merge_in,
125 &suite__demangle_java,
126 &suite__demangle_ocaml,
127 &suite__parse_metric,
128 &suite__pe_file_parsing,
129 &suite__expand_cgroup_events,
130 &suite__perf_time_to_tsc,
131 &suite__dlfilter,
132 &suite__sigtrap,
133 &suite__event_groups,
134 &suite__symbols,
135 &suite__util,
136 NULL,
137};
138
139static struct test_suite **tests[] = {
140 generic_tests,
141 arch_tests,
142 NULL, /* shell tests created at runtime. */
143};
144
145static struct test_workload *workloads[] = {
146 &workload__noploop,
147 &workload__thloop,
148 &workload__leafloop,
149 &workload__sqrtloop,
150 &workload__brstack,
151 &workload__datasym,
152};
153
154static int num_subtests(const struct test_suite *t)
155{
156 int num;
157
158 if (!t->test_cases)
159 return 0;
160
161 num = 0;
162 while (t->test_cases[num].name)
163 num++;
164
165 return num;
166}
167
168static bool has_subtests(const struct test_suite *t)
169{
170 return num_subtests(t) > 1;
171}
172
173static const char *skip_reason(const struct test_suite *t, int subtest)
174{
175 if (!t->test_cases)
176 return NULL;
177
178 return t->test_cases[subtest >= 0 ? subtest : 0].skip_reason;
179}
180
181static const char *test_description(const struct test_suite *t, int subtest)
182{
183 if (t->test_cases && subtest >= 0)
184 return t->test_cases[subtest].desc;
185
186 return t->desc;
187}
188
189static test_fnptr test_function(const struct test_suite *t, int subtest)
190{
191 if (subtest <= 0)
192 return t->test_cases[0].run_case;
193
194 return t->test_cases[subtest].run_case;
195}
196
197static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[])
198{
199 int i;
200
201 if (argc == 0)
202 return true;
203
204 for (i = 0; i < argc; ++i) {
205 char *end;
206 long nr = strtoul(argv[i], &end, 10);
207
208 if (*end == '\0') {
209 if (nr == curr + 1)
210 return true;
211 continue;
212 }
213
214 if (strcasestr(desc, argv[i]))
215 return true;
216 }
217
218 return false;
219}
220
221struct child_test {
222 struct child_process process;
223 struct test_suite *test;
224 int test_num;
225 int subtest;
226};
227
228static int run_test_child(struct child_process *process)
229{
230 struct child_test *child = container_of(process, struct child_test, process);
231 int err;
232
233 pr_debug("--- start ---\n");
234 pr_debug("test child forked, pid %d\n", getpid());
235 err = test_function(child->test, child->subtest)(child->test, child->subtest);
236 pr_debug("---- end(%d) ----\n", err);
237 fflush(NULL);
238 return -err;
239}
240
241static int print_test_result(struct test_suite *t, int i, int subtest, int result, int width)
242{
243 if (has_subtests(t)) {
244 int subw = width > 2 ? width - 2 : width;
245
246 pr_info("%3d.%1d: %-*s:", i + 1, subtest + 1, subw, test_description(t, subtest));
247 } else
248 pr_info("%3d: %-*s:", i + 1, width, test_description(t, subtest));
249
250 switch (result) {
251 case TEST_OK:
252 pr_info(" Ok\n");
253 break;
254 case TEST_SKIP: {
255 const char *reason = skip_reason(t, subtest);
256
257 if (reason)
258 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (%s)\n", reason);
259 else
260 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
261 }
262 break;
263 case TEST_FAIL:
264 default:
265 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
266 break;
267 }
268
269 return 0;
270}
271
272static int finish_test(struct child_test *child_test, int width)
273{
274 struct test_suite *t = child_test->test;
275 int i = child_test->test_num;
276 int subi = child_test->subtest;
277 int err = child_test->process.err;
278 bool err_done = err <= 0;
279 struct strbuf err_output = STRBUF_INIT;
280 int ret;
281
282 /*
283 * For test suites with subtests, display the suite name ahead of the
284 * sub test names.
285 */
286 if (has_subtests(t) && subi == 0)
287 pr_info("%3d: %-*s:\n", i + 1, width, test_description(t, -1));
288
289 /*
290 * Busy loop reading from the child's stdout/stderr that are set to be
291 * non-blocking until EOF.
292 */
293 if (!err_done)
294 fcntl(err, F_SETFL, O_NONBLOCK);
295 if (verbose > 1) {
296 if (has_subtests(t))
297 pr_info("%3d.%1d: %s:\n", i + 1, subi + 1, test_description(t, subi));
298 else
299 pr_info("%3d: %s:\n", i + 1, test_description(t, -1));
300 }
301 while (!err_done) {
302 struct pollfd pfds[1] = {
303 { .fd = err,
304 .events = POLLIN | POLLERR | POLLHUP | POLLNVAL,
305 },
306 };
307 char buf[512];
308 ssize_t len;
309
310 /* Poll to avoid excessive spinning, timeout set for 1000ms. */
311 poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/1000);
312 if (!err_done && pfds[0].revents) {
313 errno = 0;
314 len = read(err, buf, sizeof(buf) - 1);
315
316 if (len <= 0) {
317 err_done = errno != EAGAIN;
318 } else {
319 buf[len] = '\0';
320 if (verbose > 1)
321 fprintf(stdout, "%s", buf);
322 else
323 strbuf_addstr(&err_output, buf);
324 }
325 }
326 }
327 /* Clean up child process. */
328 ret = finish_command(&child_test->process);
329 if (verbose == 1 && ret == TEST_FAIL) {
330 /* Add header for test that was skipped above. */
331 if (has_subtests(t))
332 pr_info("%3d.%1d: %s:\n", i + 1, subi + 1, test_description(t, subi));
333 else
334 pr_info("%3d: %s:\n", i + 1, test_description(t, -1));
335 fprintf(stderr, "%s", err_output.buf);
336 }
337 strbuf_release(&err_output);
338 print_test_result(t, i, subi, ret, width);
339 if (err > 0)
340 close(err);
341 return 0;
342}
343
344static int start_test(struct test_suite *test, int i, int subi, struct child_test **child,
345 int width)
346{
347 int err;
348
349 *child = NULL;
350 if (dont_fork) {
351 pr_debug("--- start ---\n");
352 err = test_function(test, subi)(test, subi);
353 pr_debug("---- end ----\n");
354 print_test_result(test, i, subi, err, width);
355 return 0;
356 }
357
358 *child = zalloc(sizeof(**child));
359 if (!*child)
360 return -ENOMEM;
361
362 (*child)->test = test;
363 (*child)->test_num = i;
364 (*child)->subtest = subi;
365 (*child)->process.pid = -1;
366 (*child)->process.no_stdin = 1;
367 if (verbose <= 0) {
368 (*child)->process.no_stdout = 1;
369 (*child)->process.no_stderr = 1;
370 } else {
371 (*child)->process.stdout_to_stderr = 1;
372 (*child)->process.out = -1;
373 (*child)->process.err = -1;
374 }
375 (*child)->process.no_exec_cmd = run_test_child;
376 err = start_command(&(*child)->process);
377 if (err || parallel)
378 return err;
379 return finish_test(*child, width);
380}
381
382#define for_each_test(j, k, t) \
383 for (j = 0, k = 0; j < ARRAY_SIZE(tests); j++, k = 0) \
384 while ((t = tests[j][k++]) != NULL)
385
386static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
387{
388 struct test_suite *t;
389 unsigned int j, k;
390 int i = 0;
391 int width = 0;
392 size_t num_tests = 0;
393 struct child_test **child_tests;
394 int child_test_num = 0;
395
396 for_each_test(j, k, t) {
397 int len = strlen(test_description(t, -1));
398
399 if (width < len)
400 width = len;
401
402 if (has_subtests(t)) {
403 for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
404 len = strlen(test_description(t, subi));
405 if (width < len)
406 width = len;
407 num_tests++;
408 }
409 } else {
410 num_tests++;
411 }
412 }
413 child_tests = calloc(num_tests, sizeof(*child_tests));
414 if (!child_tests)
415 return -ENOMEM;
416
417 for_each_test(j, k, t) {
418 int curr = i++;
419
420 if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) {
421 bool skip = true;
422
423 for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
424 if (perf_test__matches(test_description(t, subi),
425 curr, argc, argv))
426 skip = false;
427 }
428
429 if (skip)
430 continue;
431 }
432
433 if (intlist__find(skiplist, i)) {
434 pr_info("%3d: %-*s:", curr + 1, width, test_description(t, -1));
435 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
436 continue;
437 }
438
439 if (!has_subtests(t)) {
440 int err = start_test(t, curr, -1, &child_tests[child_test_num++], width);
441
442 if (err) {
443 /* TODO: if parallel waitpid the already forked children. */
444 free(child_tests);
445 return err;
446 }
447 } else {
448 for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
449 int err;
450
451 if (!perf_test__matches(test_description(t, subi),
452 curr, argc, argv))
453 continue;
454
455 err = start_test(t, curr, subi, &child_tests[child_test_num++],
456 width);
457 if (err)
458 return err;
459 }
460 }
461 }
462 for (i = 0; i < child_test_num; i++) {
463 if (parallel) {
464 int ret = finish_test(child_tests[i], width);
465
466 if (ret)
467 return ret;
468 }
469 free(child_tests[i]);
470 }
471 free(child_tests);
472 return 0;
473}
474
475static int perf_test__list(int argc, const char **argv)
476{
477 unsigned int j, k;
478 struct test_suite *t;
479 int i = 0;
480
481 for_each_test(j, k, t) {
482 int curr = i++;
483
484 if (!perf_test__matches(test_description(t, -1), curr, argc, argv))
485 continue;
486
487 pr_info("%3d: %s\n", i, test_description(t, -1));
488
489 if (has_subtests(t)) {
490 int subn = num_subtests(t);
491 int subi;
492
493 for (subi = 0; subi < subn; subi++)
494 pr_info("%3d:%1d: %s\n", i, subi + 1,
495 test_description(t, subi));
496 }
497 }
498 return 0;
499}
500
501static int run_workload(const char *work, int argc, const char **argv)
502{
503 unsigned int i = 0;
504 struct test_workload *twl;
505
506 for (i = 0; i < ARRAY_SIZE(workloads); i++) {
507 twl = workloads[i];
508 if (!strcmp(twl->name, work))
509 return twl->func(argc, argv);
510 }
511
512 pr_info("No workload found: %s\n", work);
513 return -1;
514}
515
516static int perf_test__config(const char *var, const char *value,
517 void *data __maybe_unused)
518{
519 if (!strcmp(var, "annotate.objdump"))
520 test_objdump_path = value;
521
522 return 0;
523}
524
525int cmd_test(int argc, const char **argv)
526{
527 const char *test_usage[] = {
528 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
529 NULL,
530 };
531 const char *skip = NULL;
532 const char *workload = NULL;
533 const struct option test_options[] = {
534 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
535 OPT_INCR('v', "verbose", &verbose,
536 "be more verbose (show symbol address, etc)"),
537 OPT_BOOLEAN('F', "dont-fork", &dont_fork,
538 "Do not fork for testcase"),
539 OPT_BOOLEAN('p', "parallel", ¶llel,
540 "Run the tests altogether in parallel"),
541 OPT_STRING('w', "workload", &workload, "work", "workload to run for testing"),
542 OPT_STRING(0, "dso", &dso_to_test, "dso", "dso to test"),
543 OPT_STRING(0, "objdump", &test_objdump_path, "path",
544 "objdump binary to use for disassembly and annotations"),
545 OPT_END()
546 };
547 const char * const test_subcommands[] = { "list", NULL };
548 struct intlist *skiplist = NULL;
549 int ret = hists__init();
550
551 if (ret < 0)
552 return ret;
553
554 perf_config(perf_test__config, NULL);
555
556 /* Unbuffered output */
557 setvbuf(stdout, NULL, _IONBF, 0);
558
559 tests[2] = create_script_test_suites();
560 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
561 if (argc >= 1 && !strcmp(argv[0], "list"))
562 return perf_test__list(argc - 1, argv + 1);
563
564 if (workload)
565 return run_workload(workload, argc, argv);
566
567 symbol_conf.priv_size = sizeof(int);
568 symbol_conf.try_vmlinux_path = true;
569
570 if (symbol__init(NULL) < 0)
571 return -1;
572
573 if (skip != NULL)
574 skiplist = intlist__new(skip);
575 /*
576 * Tests that create BPF maps, for instance, need more than the 64K
577 * default:
578 */
579 rlimit__bump_memlock();
580
581 return __cmd_test(argc, argv, skiplist);
582}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * builtin-test.c
4 *
5 * Builtin regression testing command: ever growing number of sanity tests
6 */
7#include <fcntl.h>
8#include <errno.h>
9#include <unistd.h>
10#include <string.h>
11#include <stdlib.h>
12#include <sys/types.h>
13#include <dirent.h>
14#include <sys/wait.h>
15#include <sys/stat.h>
16#include "builtin.h"
17#include "config.h"
18#include "hist.h"
19#include "intlist.h"
20#include "tests.h"
21#include "debug.h"
22#include "color.h"
23#include <subcmd/parse-options.h>
24#include "string2.h"
25#include "symbol.h"
26#include "util/rlimit.h"
27#include <linux/kernel.h>
28#include <linux/string.h>
29#include <subcmd/exec-cmd.h>
30#include <linux/zalloc.h>
31
32#include "builtin-test-list.h"
33
34static bool dont_fork;
35const char *dso_to_test;
36const char *test_objdump_path = "objdump";
37
38/*
39 * List of architecture specific tests. Not a weak symbol as the array length is
40 * dependent on the initialization, as such GCC with LTO complains of
41 * conflicting definitions with a weak symbol.
42 */
43#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
44extern struct test_suite *arch_tests[];
45#else
46static struct test_suite *arch_tests[] = {
47 NULL,
48};
49#endif
50
51static struct test_suite *generic_tests[] = {
52 &suite__vmlinux_matches_kallsyms,
53#ifdef HAVE_LIBTRACEEVENT
54 &suite__openat_syscall_event,
55 &suite__openat_syscall_event_on_all_cpus,
56 &suite__basic_mmap,
57#endif
58 &suite__mem,
59 &suite__parse_events,
60 &suite__expr,
61 &suite__PERF_RECORD,
62 &suite__pmu,
63 &suite__pmu_events,
64 &suite__dso_data,
65 &suite__perf_evsel__roundtrip_name_test,
66#ifdef HAVE_LIBTRACEEVENT
67 &suite__perf_evsel__tp_sched_test,
68 &suite__syscall_openat_tp_fields,
69#endif
70 &suite__attr,
71 &suite__hists_link,
72 &suite__python_use,
73 &suite__bp_signal,
74 &suite__bp_signal_overflow,
75 &suite__bp_accounting,
76 &suite__wp,
77 &suite__task_exit,
78 &suite__sw_clock_freq,
79 &suite__code_reading,
80 &suite__sample_parsing,
81 &suite__keep_tracking,
82 &suite__parse_no_sample_id_all,
83 &suite__hists_filter,
84 &suite__mmap_thread_lookup,
85 &suite__thread_maps_share,
86 &suite__hists_output,
87 &suite__hists_cumulate,
88#ifdef HAVE_LIBTRACEEVENT
89 &suite__switch_tracking,
90#endif
91 &suite__fdarray__filter,
92 &suite__fdarray__add,
93 &suite__kmod_path__parse,
94 &suite__thread_map,
95 &suite__session_topology,
96 &suite__thread_map_synthesize,
97 &suite__thread_map_remove,
98 &suite__cpu_map,
99 &suite__synthesize_stat_config,
100 &suite__synthesize_stat,
101 &suite__synthesize_stat_round,
102 &suite__event_update,
103 &suite__event_times,
104 &suite__backward_ring_buffer,
105 &suite__sdt_event,
106 &suite__is_printable_array,
107 &suite__bitmap_print,
108 &suite__perf_hooks,
109 &suite__unit_number__scnprint,
110 &suite__mem2node,
111 &suite__time_utils,
112 &suite__jit_write_elf,
113 &suite__pfm,
114 &suite__api_io,
115 &suite__maps__merge_in,
116 &suite__demangle_java,
117 &suite__demangle_ocaml,
118 &suite__parse_metric,
119 &suite__pe_file_parsing,
120 &suite__expand_cgroup_events,
121 &suite__perf_time_to_tsc,
122 &suite__dlfilter,
123 &suite__sigtrap,
124 &suite__event_groups,
125 &suite__symbols,
126 &suite__util,
127 NULL,
128};
129
130static struct test_suite **tests[] = {
131 generic_tests,
132 arch_tests,
133};
134
135static struct test_workload *workloads[] = {
136 &workload__noploop,
137 &workload__thloop,
138 &workload__leafloop,
139 &workload__sqrtloop,
140 &workload__brstack,
141 &workload__datasym,
142};
143
144static int num_subtests(const struct test_suite *t)
145{
146 int num;
147
148 if (!t->test_cases)
149 return 0;
150
151 num = 0;
152 while (t->test_cases[num].name)
153 num++;
154
155 return num;
156}
157
158static bool has_subtests(const struct test_suite *t)
159{
160 return num_subtests(t) > 1;
161}
162
163static const char *skip_reason(const struct test_suite *t, int subtest)
164{
165 if (!t->test_cases)
166 return NULL;
167
168 return t->test_cases[subtest >= 0 ? subtest : 0].skip_reason;
169}
170
171static const char *test_description(const struct test_suite *t, int subtest)
172{
173 if (t->test_cases && subtest >= 0)
174 return t->test_cases[subtest].desc;
175
176 return t->desc;
177}
178
179static test_fnptr test_function(const struct test_suite *t, int subtest)
180{
181 if (subtest <= 0)
182 return t->test_cases[0].run_case;
183
184 return t->test_cases[subtest].run_case;
185}
186
187static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[])
188{
189 int i;
190
191 if (argc == 0)
192 return true;
193
194 for (i = 0; i < argc; ++i) {
195 char *end;
196 long nr = strtoul(argv[i], &end, 10);
197
198 if (*end == '\0') {
199 if (nr == curr + 1)
200 return true;
201 continue;
202 }
203
204 if (strcasestr(desc, argv[i]))
205 return true;
206 }
207
208 return false;
209}
210
211static int run_test(struct test_suite *test, int subtest)
212{
213 int status, err = -1, child = dont_fork ? 0 : fork();
214 char sbuf[STRERR_BUFSIZE];
215
216 if (child < 0) {
217 pr_err("failed to fork test: %s\n",
218 str_error_r(errno, sbuf, sizeof(sbuf)));
219 return -1;
220 }
221
222 if (!child) {
223 if (!dont_fork) {
224 pr_debug("test child forked, pid %d\n", getpid());
225
226 if (verbose <= 0) {
227 int nullfd = open("/dev/null", O_WRONLY);
228
229 if (nullfd >= 0) {
230 close(STDERR_FILENO);
231 close(STDOUT_FILENO);
232
233 dup2(nullfd, STDOUT_FILENO);
234 dup2(STDOUT_FILENO, STDERR_FILENO);
235 close(nullfd);
236 }
237 } else {
238 signal(SIGSEGV, sighandler_dump_stack);
239 signal(SIGFPE, sighandler_dump_stack);
240 }
241 }
242
243 err = test_function(test, subtest)(test, subtest);
244 if (!dont_fork)
245 exit(err);
246 }
247
248 if (!dont_fork) {
249 wait(&status);
250
251 if (WIFEXITED(status)) {
252 err = (signed char)WEXITSTATUS(status);
253 pr_debug("test child finished with %d\n", err);
254 } else if (WIFSIGNALED(status)) {
255 err = -1;
256 pr_debug("test child interrupted\n");
257 }
258 }
259
260 return err;
261}
262
263#define for_each_test(j, k, t) \
264 for (j = 0, k = 0; j < ARRAY_SIZE(tests); j++, k = 0) \
265 while ((t = tests[j][k++]) != NULL)
266
267static int test_and_print(struct test_suite *t, int subtest)
268{
269 int err;
270
271 pr_debug("\n--- start ---\n");
272 err = run_test(t, subtest);
273 pr_debug("---- end ----\n");
274
275 if (!has_subtests(t))
276 pr_debug("%s:", t->desc);
277 else
278 pr_debug("%s subtest %d:", t->desc, subtest + 1);
279
280 switch (err) {
281 case TEST_OK:
282 pr_info(" Ok\n");
283 break;
284 case TEST_SKIP: {
285 const char *reason = skip_reason(t, subtest);
286
287 if (reason)
288 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (%s)\n", reason);
289 else
290 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
291 }
292 break;
293 case TEST_FAIL:
294 default:
295 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
296 break;
297 }
298
299 return err;
300}
301
302struct shell_test {
303 const char *dir;
304 const char *file;
305};
306
307static int shell_test__run(struct test_suite *test, int subdir __maybe_unused)
308{
309 int err;
310 char script[PATH_MAX];
311 struct shell_test *st = test->priv;
312
313 path__join(script, sizeof(script) - 3, st->dir, st->file);
314
315 if (verbose > 0)
316 strncat(script, " -v", sizeof(script) - strlen(script) - 1);
317
318 err = system(script);
319 if (!err)
320 return TEST_OK;
321
322 return WEXITSTATUS(err) == 2 ? TEST_SKIP : TEST_FAIL;
323}
324
325static int run_shell_tests(int argc, const char *argv[], int i, int width,
326 struct intlist *skiplist)
327{
328 struct shell_test st;
329 const struct script_file *files, *file;
330
331 files = list_script_files();
332 if (!files)
333 return 0;
334 for (file = files; file->dir; file++) {
335 int curr = i++;
336 struct test_case test_cases[] = {
337 {
338 .desc = file->desc,
339 .run_case = shell_test__run,
340 },
341 { .name = NULL, }
342 };
343 struct test_suite test_suite = {
344 .desc = test_cases[0].desc,
345 .test_cases = test_cases,
346 .priv = &st,
347 };
348 st.dir = file->dir;
349
350 if (test_suite.desc == NULL ||
351 !perf_test__matches(test_suite.desc, curr, argc, argv))
352 continue;
353
354 st.file = file->file;
355 pr_info("%3d: %-*s:", i, width, test_suite.desc);
356
357 if (intlist__find(skiplist, i)) {
358 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
359 continue;
360 }
361
362 test_and_print(&test_suite, 0);
363 }
364 return 0;
365}
366
367static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
368{
369 struct test_suite *t;
370 unsigned int j, k;
371 int i = 0;
372 int width = list_script_max_width();
373
374 for_each_test(j, k, t) {
375 int len = strlen(test_description(t, -1));
376
377 if (width < len)
378 width = len;
379 }
380
381 for_each_test(j, k, t) {
382 int curr = i++;
383 int subi;
384
385 if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) {
386 bool skip = true;
387 int subn;
388
389 subn = num_subtests(t);
390
391 for (subi = 0; subi < subn; subi++) {
392 if (perf_test__matches(test_description(t, subi),
393 curr, argc, argv))
394 skip = false;
395 }
396
397 if (skip)
398 continue;
399 }
400
401 pr_info("%3d: %-*s:", i, width, test_description(t, -1));
402
403 if (intlist__find(skiplist, i)) {
404 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
405 continue;
406 }
407
408 if (!has_subtests(t)) {
409 test_and_print(t, -1);
410 } else {
411 int subn = num_subtests(t);
412 /*
413 * minus 2 to align with normal testcases.
414 * For subtest we print additional '.x' in number.
415 * for example:
416 *
417 * 35: Test LLVM searching and compiling :
418 * 35.1: Basic BPF llvm compiling test : Ok
419 */
420 int subw = width > 2 ? width - 2 : width;
421
422 if (subn <= 0) {
423 color_fprintf(stderr, PERF_COLOR_YELLOW,
424 " Skip (not compiled in)\n");
425 continue;
426 }
427 pr_info("\n");
428
429 for (subi = 0; subi < subn; subi++) {
430 int len = strlen(test_description(t, subi));
431
432 if (subw < len)
433 subw = len;
434 }
435
436 for (subi = 0; subi < subn; subi++) {
437 if (!perf_test__matches(test_description(t, subi),
438 curr, argc, argv))
439 continue;
440
441 pr_info("%3d.%1d: %-*s:", i, subi + 1, subw,
442 test_description(t, subi));
443 test_and_print(t, subi);
444 }
445 }
446 }
447
448 return run_shell_tests(argc, argv, i, width, skiplist);
449}
450
451static int perf_test__list_shell(int argc, const char **argv, int i)
452{
453 const struct script_file *files, *file;
454
455 files = list_script_files();
456 if (!files)
457 return 0;
458 for (file = files; file->dir; file++) {
459 int curr = i++;
460 struct test_suite t = {
461 .desc = file->desc
462 };
463
464 if (!perf_test__matches(t.desc, curr, argc, argv))
465 continue;
466
467 pr_info("%3d: %s\n", i, t.desc);
468 }
469 return 0;
470}
471
472static int perf_test__list(int argc, const char **argv)
473{
474 unsigned int j, k;
475 struct test_suite *t;
476 int i = 0;
477
478 for_each_test(j, k, t) {
479 int curr = i++;
480
481 if (!perf_test__matches(test_description(t, -1), curr, argc, argv))
482 continue;
483
484 pr_info("%3d: %s\n", i, test_description(t, -1));
485
486 if (has_subtests(t)) {
487 int subn = num_subtests(t);
488 int subi;
489
490 for (subi = 0; subi < subn; subi++)
491 pr_info("%3d:%1d: %s\n", i, subi + 1,
492 test_description(t, subi));
493 }
494 }
495
496 perf_test__list_shell(argc, argv, i);
497
498 return 0;
499}
500
501static int run_workload(const char *work, int argc, const char **argv)
502{
503 unsigned int i = 0;
504 struct test_workload *twl;
505
506 for (i = 0; i < ARRAY_SIZE(workloads); i++) {
507 twl = workloads[i];
508 if (!strcmp(twl->name, work))
509 return twl->func(argc, argv);
510 }
511
512 pr_info("No workload found: %s\n", work);
513 return -1;
514}
515
516static int perf_test__config(const char *var, const char *value,
517 void *data __maybe_unused)
518{
519 if (!strcmp(var, "annotate.objdump"))
520 test_objdump_path = value;
521
522 return 0;
523}
524
525int cmd_test(int argc, const char **argv)
526{
527 const char *test_usage[] = {
528 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
529 NULL,
530 };
531 const char *skip = NULL;
532 const char *workload = NULL;
533 const struct option test_options[] = {
534 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
535 OPT_INCR('v', "verbose", &verbose,
536 "be more verbose (show symbol address, etc)"),
537 OPT_BOOLEAN('F', "dont-fork", &dont_fork,
538 "Do not fork for testcase"),
539 OPT_STRING('w', "workload", &workload, "work", "workload to run for testing"),
540 OPT_STRING(0, "dso", &dso_to_test, "dso", "dso to test"),
541 OPT_STRING(0, "objdump", &test_objdump_path, "path",
542 "objdump binary to use for disassembly and annotations"),
543 OPT_END()
544 };
545 const char * const test_subcommands[] = { "list", NULL };
546 struct intlist *skiplist = NULL;
547 int ret = hists__init();
548
549 if (ret < 0)
550 return ret;
551
552 perf_config(perf_test__config, NULL);
553
554 /* Unbuffered output */
555 setvbuf(stdout, NULL, _IONBF, 0);
556
557 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
558 if (argc >= 1 && !strcmp(argv[0], "list"))
559 return perf_test__list(argc - 1, argv + 1);
560
561 if (workload)
562 return run_workload(workload, argc, argv);
563
564 symbol_conf.priv_size = sizeof(int);
565 symbol_conf.try_vmlinux_path = true;
566
567 if (symbol__init(NULL) < 0)
568 return -1;
569
570 if (skip != NULL)
571 skiplist = intlist__new(skip);
572 /*
573 * Tests that create BPF maps, for instance, need more than the 64K
574 * default:
575 */
576 rlimit__bump_memlock();
577
578 return __cmd_test(argc, argv, skiplist);
579}