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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 "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
17struct test __weak arch_tests[] = {
18 {
19 .func = NULL,
20 },
21};
22
23static struct test generic_tests[] = {
24 {
25 .desc = "vmlinux symtab matches kallsyms",
26 .func = test__vmlinux_matches_kallsyms,
27 },
28 {
29 .desc = "detect openat syscall event",
30 .func = test__openat_syscall_event,
31 },
32 {
33 .desc = "detect openat syscall event on all cpus",
34 .func = test__openat_syscall_event_on_all_cpus,
35 },
36 {
37 .desc = "read samples using the mmap interface",
38 .func = test__basic_mmap,
39 },
40 {
41 .desc = "parse events tests",
42 .func = test__parse_events,
43 },
44 {
45 .desc = "Validate PERF_RECORD_* events & perf_sample fields",
46 .func = test__PERF_RECORD,
47 },
48 {
49 .desc = "Test perf pmu format parsing",
50 .func = test__pmu,
51 },
52 {
53 .desc = "Test dso data read",
54 .func = test__dso_data,
55 },
56 {
57 .desc = "Test dso data cache",
58 .func = test__dso_data_cache,
59 },
60 {
61 .desc = "Test dso data reopen",
62 .func = test__dso_data_reopen,
63 },
64 {
65 .desc = "roundtrip evsel->name check",
66 .func = test__perf_evsel__roundtrip_name_test,
67 },
68 {
69 .desc = "Check parsing of sched tracepoints fields",
70 .func = test__perf_evsel__tp_sched_test,
71 },
72 {
73 .desc = "Generate and check syscalls:sys_enter_openat event fields",
74 .func = test__syscall_openat_tp_fields,
75 },
76 {
77 .desc = "struct perf_event_attr setup",
78 .func = test__attr,
79 },
80 {
81 .desc = "Test matching and linking multiple hists",
82 .func = test__hists_link,
83 },
84 {
85 .desc = "Try 'import perf' in python, checking link problems",
86 .func = test__python_use,
87 },
88 {
89 .desc = "Test breakpoint overflow signal handler",
90 .func = test__bp_signal,
91 },
92 {
93 .desc = "Test breakpoint overflow sampling",
94 .func = test__bp_signal_overflow,
95 },
96 {
97 .desc = "Test number of exit event of a simple workload",
98 .func = test__task_exit,
99 },
100 {
101 .desc = "Test software clock events have valid period values",
102 .func = test__sw_clock_freq,
103 },
104 {
105 .desc = "Test object code reading",
106 .func = test__code_reading,
107 },
108 {
109 .desc = "Test sample parsing",
110 .func = test__sample_parsing,
111 },
112 {
113 .desc = "Test using a dummy software event to keep tracking",
114 .func = test__keep_tracking,
115 },
116 {
117 .desc = "Test parsing with no sample_id_all bit set",
118 .func = test__parse_no_sample_id_all,
119 },
120 {
121 .desc = "Test filtering hist entries",
122 .func = test__hists_filter,
123 },
124 {
125 .desc = "Test mmap thread lookup",
126 .func = test__mmap_thread_lookup,
127 },
128 {
129 .desc = "Test thread mg sharing",
130 .func = test__thread_mg_share,
131 },
132 {
133 .desc = "Test output sorting of hist entries",
134 .func = test__hists_output,
135 },
136 {
137 .desc = "Test cumulation of child hist entries",
138 .func = test__hists_cumulate,
139 },
140 {
141 .desc = "Test tracking with sched_switch",
142 .func = test__switch_tracking,
143 },
144 {
145 .desc = "Filter fds with revents mask in a fdarray",
146 .func = test__fdarray__filter,
147 },
148 {
149 .desc = "Add fd to a fdarray, making it autogrow",
150 .func = test__fdarray__add,
151 },
152 {
153 .desc = "Test kmod_path__parse function",
154 .func = test__kmod_path__parse,
155 },
156 {
157 .desc = "Test thread map",
158 .func = test__thread_map,
159 },
160 {
161 .desc = "Test LLVM searching and compiling",
162 .func = test__llvm,
163 .subtest = {
164 .skip_if_fail = true,
165 .get_nr = test__llvm_subtest_get_nr,
166 .get_desc = test__llvm_subtest_get_desc,
167 },
168 },
169 {
170 .desc = "Test topology in session",
171 .func = test_session_topology,
172 },
173 {
174 .desc = "Test BPF filter",
175 .func = test__bpf,
176 .subtest = {
177 .skip_if_fail = true,
178 .get_nr = test__bpf_subtest_get_nr,
179 .get_desc = test__bpf_subtest_get_desc,
180 },
181 },
182 {
183 .desc = "Test thread map synthesize",
184 .func = test__thread_map_synthesize,
185 },
186 {
187 .desc = "Test cpu map synthesize",
188 .func = test__cpu_map_synthesize,
189 },
190 {
191 .desc = "Test stat config synthesize",
192 .func = test__synthesize_stat_config,
193 },
194 {
195 .desc = "Test stat synthesize",
196 .func = test__synthesize_stat,
197 },
198 {
199 .desc = "Test stat round synthesize",
200 .func = test__synthesize_stat_round,
201 },
202 {
203 .desc = "Test attr update synthesize",
204 .func = test__event_update,
205 },
206 {
207 .func = NULL,
208 },
209};
210
211static struct test *tests[] = {
212 generic_tests,
213 arch_tests,
214};
215
216static bool perf_test__matches(struct test *test, int curr, int argc, const char *argv[])
217{
218 int i;
219
220 if (argc == 0)
221 return true;
222
223 for (i = 0; i < argc; ++i) {
224 char *end;
225 long nr = strtoul(argv[i], &end, 10);
226
227 if (*end == '\0') {
228 if (nr == curr + 1)
229 return true;
230 continue;
231 }
232
233 if (strcasestr(test->desc, argv[i]))
234 return true;
235 }
236
237 return false;
238}
239
240static int run_test(struct test *test, int subtest)
241{
242 int status, err = -1, child = fork();
243 char sbuf[STRERR_BUFSIZE];
244
245 if (child < 0) {
246 pr_err("failed to fork test: %s\n",
247 strerror_r(errno, sbuf, sizeof(sbuf)));
248 return -1;
249 }
250
251 if (!child) {
252 pr_debug("test child forked, pid %d\n", getpid());
253 if (!verbose) {
254 int nullfd = open("/dev/null", O_WRONLY);
255 if (nullfd >= 0) {
256 close(STDERR_FILENO);
257 close(STDOUT_FILENO);
258
259 dup2(nullfd, STDOUT_FILENO);
260 dup2(STDOUT_FILENO, STDERR_FILENO);
261 close(nullfd);
262 }
263 } else {
264 signal(SIGSEGV, sighandler_dump_stack);
265 signal(SIGFPE, sighandler_dump_stack);
266 }
267
268 err = test->func(subtest);
269 exit(err);
270 }
271
272 wait(&status);
273
274 if (WIFEXITED(status)) {
275 err = (signed char)WEXITSTATUS(status);
276 pr_debug("test child finished with %d\n", err);
277 } else if (WIFSIGNALED(status)) {
278 err = -1;
279 pr_debug("test child interrupted\n");
280 }
281
282 return err;
283}
284
285#define for_each_test(j, t) \
286 for (j = 0; j < ARRAY_SIZE(tests); j++) \
287 for (t = &tests[j][0]; t->func; t++)
288
289static int test_and_print(struct test *t, bool force_skip, int subtest)
290{
291 int err;
292
293 if (!force_skip) {
294 pr_debug("\n--- start ---\n");
295 err = run_test(t, subtest);
296 pr_debug("---- end ----\n");
297 } else {
298 pr_debug("\n--- force skipped ---\n");
299 err = TEST_SKIP;
300 }
301
302 if (!t->subtest.get_nr)
303 pr_debug("%s:", t->desc);
304 else
305 pr_debug("%s subtest %d:", t->desc, subtest);
306
307 switch (err) {
308 case TEST_OK:
309 pr_info(" Ok\n");
310 break;
311 case TEST_SKIP:
312 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
313 break;
314 case TEST_FAIL:
315 default:
316 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
317 break;
318 }
319
320 return err;
321}
322
323static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
324{
325 struct test *t;
326 unsigned int j;
327 int i = 0;
328 int width = 0;
329
330 for_each_test(j, t) {
331 int len = strlen(t->desc);
332
333 if (width < len)
334 width = len;
335 }
336
337 for_each_test(j, t) {
338 int curr = i++, err;
339
340 if (!perf_test__matches(t, curr, argc, argv))
341 continue;
342
343 pr_info("%2d: %-*s:", i, width, t->desc);
344
345 if (intlist__find(skiplist, i)) {
346 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
347 continue;
348 }
349
350 if (!t->subtest.get_nr) {
351 test_and_print(t, false, -1);
352 } else {
353 int subn = t->subtest.get_nr();
354 /*
355 * minus 2 to align with normal testcases.
356 * For subtest we print additional '.x' in number.
357 * for example:
358 *
359 * 35: Test LLVM searching and compiling :
360 * 35.1: Basic BPF llvm compiling test : Ok
361 */
362 int subw = width > 2 ? width - 2 : width;
363 bool skip = false;
364 int subi;
365
366 if (subn <= 0) {
367 color_fprintf(stderr, PERF_COLOR_YELLOW,
368 " Skip (not compiled in)\n");
369 continue;
370 }
371 pr_info("\n");
372
373 for (subi = 0; subi < subn; subi++) {
374 int len = strlen(t->subtest.get_desc(subi));
375
376 if (subw < len)
377 subw = len;
378 }
379
380 for (subi = 0; subi < subn; subi++) {
381 pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
382 t->subtest.get_desc(subi));
383 err = test_and_print(t, skip, subi);
384 if (err != TEST_OK && t->subtest.skip_if_fail)
385 skip = true;
386 }
387 }
388 }
389
390 return 0;
391}
392
393static int perf_test__list(int argc, const char **argv)
394{
395 unsigned int j;
396 struct test *t;
397 int i = 0;
398
399 for_each_test(j, t) {
400 if (argc > 1 && !strstr(t->desc, argv[1]))
401 continue;
402
403 pr_info("%2d: %s\n", ++i, t->desc);
404 }
405
406 return 0;
407}
408
409int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
410{
411 const char *test_usage[] = {
412 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
413 NULL,
414 };
415 const char *skip = NULL;
416 const struct option test_options[] = {
417 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
418 OPT_INCR('v', "verbose", &verbose,
419 "be more verbose (show symbol address, etc)"),
420 OPT_END()
421 };
422 const char * const test_subcommands[] = { "list", NULL };
423 struct intlist *skiplist = NULL;
424 int ret = hists__init();
425
426 if (ret < 0)
427 return ret;
428
429 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
430 if (argc >= 1 && !strcmp(argv[0], "list"))
431 return perf_test__list(argc, argv);
432
433 symbol_conf.priv_size = sizeof(int);
434 symbol_conf.sort_by_name = true;
435 symbol_conf.try_vmlinux_path = true;
436
437 if (symbol__init(NULL) < 0)
438 return -1;
439
440 if (skip != NULL)
441 skiplist = intlist__new(skip);
442
443 return __cmd_test(argc, argv, skiplist);
444}
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}