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1/*
2 * builtin-test.c
3 *
4 * Builtin regression testing command: ever growing number of sanity tests
5 */
6#include "builtin.h"
7#include "intlist.h"
8#include "tests.h"
9#include "debug.h"
10#include "color.h"
11#include "parse-options.h"
12#include "symbol.h"
13
14static struct test {
15 const char *desc;
16 int (*func)(void);
17} tests[] = {
18 {
19 .desc = "vmlinux symtab matches kallsyms",
20 .func = test__vmlinux_matches_kallsyms,
21 },
22 {
23 .desc = "detect open syscall event",
24 .func = test__open_syscall_event,
25 },
26 {
27 .desc = "detect open syscall event on all cpus",
28 .func = test__open_syscall_event_on_all_cpus,
29 },
30 {
31 .desc = "read samples using the mmap interface",
32 .func = test__basic_mmap,
33 },
34 {
35 .desc = "parse events tests",
36 .func = test__parse_events,
37 },
38#if defined(__x86_64__) || defined(__i386__)
39 {
40 .desc = "x86 rdpmc test",
41 .func = test__rdpmc,
42 },
43#endif
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 interface",
54 .func = test__dso_data,
55 },
56 {
57 .desc = "roundtrip evsel->name check",
58 .func = test__perf_evsel__roundtrip_name_test,
59 },
60 {
61 .desc = "Check parsing of sched tracepoints fields",
62 .func = test__perf_evsel__tp_sched_test,
63 },
64 {
65 .desc = "Generate and check syscalls:sys_enter_open event fields",
66 .func = test__syscall_open_tp_fields,
67 },
68 {
69 .desc = "struct perf_event_attr setup",
70 .func = test__attr,
71 },
72 {
73 .desc = "Test matching and linking multiple hists",
74 .func = test__hists_link,
75 },
76 {
77 .desc = "Try 'use perf' in python, checking link problems",
78 .func = test__python_use,
79 },
80 {
81 .desc = "Test breakpoint overflow signal handler",
82 .func = test__bp_signal,
83 },
84 {
85 .desc = "Test breakpoint overflow sampling",
86 .func = test__bp_signal_overflow,
87 },
88 {
89 .desc = "Test number of exit event of a simple workload",
90 .func = test__task_exit,
91 },
92 {
93 .desc = "Test software clock events have valid period values",
94 .func = test__sw_clock_freq,
95 },
96#if defined(__x86_64__) || defined(__i386__)
97 {
98 .desc = "Test converting perf time to TSC",
99 .func = test__perf_time_to_tsc,
100 },
101#endif
102 {
103 .desc = "Test object code reading",
104 .func = test__code_reading,
105 },
106 {
107 .desc = "Test sample parsing",
108 .func = test__sample_parsing,
109 },
110 {
111 .desc = "Test using a dummy software event to keep tracking",
112 .func = test__keep_tracking,
113 },
114 {
115 .desc = "Test parsing with no sample_id_all bit set",
116 .func = test__parse_no_sample_id_all,
117 },
118#if defined(__x86_64__) || defined(__i386__)
119#ifdef HAVE_DWARF_UNWIND_SUPPORT
120 {
121 .desc = "Test dwarf unwind",
122 .func = test__dwarf_unwind,
123 },
124#endif
125#endif
126 {
127 .func = NULL,
128 },
129};
130
131static bool perf_test__matches(int curr, int argc, const char *argv[])
132{
133 int i;
134
135 if (argc == 0)
136 return true;
137
138 for (i = 0; i < argc; ++i) {
139 char *end;
140 long nr = strtoul(argv[i], &end, 10);
141
142 if (*end == '\0') {
143 if (nr == curr + 1)
144 return true;
145 continue;
146 }
147
148 if (strstr(tests[curr].desc, argv[i]))
149 return true;
150 }
151
152 return false;
153}
154
155static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
156{
157 int i = 0;
158 int width = 0;
159
160 while (tests[i].func) {
161 int len = strlen(tests[i].desc);
162
163 if (width < len)
164 width = len;
165 ++i;
166 }
167
168 i = 0;
169 while (tests[i].func) {
170 int curr = i++, err;
171
172 if (!perf_test__matches(curr, argc, argv))
173 continue;
174
175 pr_info("%2d: %-*s:", i, width, tests[curr].desc);
176
177 if (intlist__find(skiplist, i)) {
178 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
179 continue;
180 }
181
182 pr_debug("\n--- start ---\n");
183 err = tests[curr].func();
184 pr_debug("---- end ----\n%s:", tests[curr].desc);
185
186 switch (err) {
187 case TEST_OK:
188 pr_info(" Ok\n");
189 break;
190 case TEST_SKIP:
191 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
192 break;
193 case TEST_FAIL:
194 default:
195 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
196 break;
197 }
198 }
199
200 return 0;
201}
202
203static int perf_test__list(int argc, const char **argv)
204{
205 int i = 0;
206
207 while (tests[i].func) {
208 int curr = i++;
209
210 if (argc > 1 && !strstr(tests[curr].desc, argv[1]))
211 continue;
212
213 pr_info("%2d: %s\n", i, tests[curr].desc);
214 }
215
216 return 0;
217}
218
219int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
220{
221 const char * const test_usage[] = {
222 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
223 NULL,
224 };
225 const char *skip = NULL;
226 const struct option test_options[] = {
227 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
228 OPT_INCR('v', "verbose", &verbose,
229 "be more verbose (show symbol address, etc)"),
230 OPT_END()
231 };
232 struct intlist *skiplist = NULL;
233
234 argc = parse_options(argc, argv, test_options, test_usage, 0);
235 if (argc >= 1 && !strcmp(argv[0], "list"))
236 return perf_test__list(argc, argv);
237
238 symbol_conf.priv_size = sizeof(int);
239 symbol_conf.sort_by_name = true;
240 symbol_conf.try_vmlinux_path = true;
241
242 if (symbol__init() < 0)
243 return -1;
244
245 if (skip != NULL)
246 skiplist = intlist__new(skip);
247
248 return __cmd_test(argc, argv, skiplist);
249}
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 <setjmp.h>
12#include <string.h>
13#include <stdlib.h>
14#include <sys/types.h>
15#include <dirent.h>
16#include <sys/wait.h>
17#include <sys/stat.h>
18#include "builtin.h"
19#include "config.h"
20#include "hist.h"
21#include "intlist.h"
22#include "tests.h"
23#include "debug.h"
24#include "color.h"
25#include <subcmd/parse-options.h>
26#include <subcmd/run-command.h>
27#include "string2.h"
28#include "symbol.h"
29#include "util/rlimit.h"
30#include "util/strbuf.h"
31#include <linux/kernel.h>
32#include <linux/string.h>
33#include <subcmd/exec-cmd.h>
34#include <linux/zalloc.h>
35
36#include "tests-scripts.h"
37
38/*
39 * Command line option to not fork the test running in the same process and
40 * making them easier to debug.
41 */
42static bool dont_fork;
43/* Fork the tests in parallel and wait for their completion. */
44static bool sequential;
45const char *dso_to_test;
46const char *test_objdump_path = "objdump";
47
48/*
49 * List of architecture specific tests. Not a weak symbol as the array length is
50 * dependent on the initialization, as such GCC with LTO complains of
51 * conflicting definitions with a weak symbol.
52 */
53#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
54extern struct test_suite *arch_tests[];
55#else
56static struct test_suite *arch_tests[] = {
57 NULL,
58};
59#endif
60
61static struct test_suite *generic_tests[] = {
62 &suite__vmlinux_matches_kallsyms,
63#ifdef HAVE_LIBTRACEEVENT
64 &suite__openat_syscall_event,
65 &suite__openat_syscall_event_on_all_cpus,
66 &suite__basic_mmap,
67#endif
68 &suite__mem,
69 &suite__parse_events,
70 &suite__expr,
71 &suite__PERF_RECORD,
72 &suite__pmu,
73 &suite__pmu_events,
74 &suite__hwmon_pmu,
75 &suite__tool_pmu,
76 &suite__dso_data,
77 &suite__perf_evsel__roundtrip_name_test,
78#ifdef HAVE_LIBTRACEEVENT
79 &suite__perf_evsel__tp_sched_test,
80 &suite__syscall_openat_tp_fields,
81#endif
82 &suite__hists_link,
83 &suite__python_use,
84 &suite__bp_signal,
85 &suite__bp_signal_overflow,
86 &suite__bp_accounting,
87 &suite__wp,
88 &suite__task_exit,
89 &suite__sw_clock_freq,
90 &suite__code_reading,
91 &suite__sample_parsing,
92 &suite__keep_tracking,
93 &suite__parse_no_sample_id_all,
94 &suite__hists_filter,
95 &suite__mmap_thread_lookup,
96 &suite__thread_maps_share,
97 &suite__hists_output,
98 &suite__hists_cumulate,
99#ifdef HAVE_LIBTRACEEVENT
100 &suite__switch_tracking,
101#endif
102 &suite__fdarray__filter,
103 &suite__fdarray__add,
104 &suite__kmod_path__parse,
105 &suite__thread_map,
106 &suite__session_topology,
107 &suite__thread_map_synthesize,
108 &suite__thread_map_remove,
109 &suite__cpu_map,
110 &suite__synthesize_stat_config,
111 &suite__synthesize_stat,
112 &suite__synthesize_stat_round,
113 &suite__event_update,
114 &suite__event_times,
115 &suite__backward_ring_buffer,
116 &suite__sdt_event,
117 &suite__is_printable_array,
118 &suite__bitmap_print,
119 &suite__perf_hooks,
120 &suite__unit_number__scnprint,
121 &suite__mem2node,
122 &suite__time_utils,
123 &suite__jit_write_elf,
124 &suite__pfm,
125 &suite__api_io,
126 &suite__maps__merge_in,
127 &suite__demangle_java,
128 &suite__demangle_ocaml,
129 &suite__parse_metric,
130 &suite__pe_file_parsing,
131 &suite__expand_cgroup_events,
132 &suite__perf_time_to_tsc,
133 &suite__dlfilter,
134 &suite__sigtrap,
135 &suite__event_groups,
136 &suite__symbols,
137 &suite__util,
138 NULL,
139};
140
141static struct test_workload *workloads[] = {
142 &workload__noploop,
143 &workload__thloop,
144 &workload__leafloop,
145 &workload__sqrtloop,
146 &workload__brstack,
147 &workload__datasym,
148 &workload__landlock,
149};
150
151#define workloads__for_each(workload) \
152 for (unsigned i = 0; i < ARRAY_SIZE(workloads) && ({ workload = workloads[i]; 1; }); i++)
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 test_exclusive(const struct test_suite *t, int subtest)
198{
199 if (subtest <= 0)
200 return t->test_cases[0].exclusive;
201
202 return t->test_cases[subtest].exclusive;
203}
204
205static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[])
206{
207 int i;
208
209 if (argc == 0)
210 return true;
211
212 for (i = 0; i < argc; ++i) {
213 char *end;
214 long nr = strtoul(argv[i], &end, 10);
215
216 if (*end == '\0') {
217 if (nr == curr + 1)
218 return true;
219 continue;
220 }
221
222 if (strcasestr(desc, argv[i]))
223 return true;
224 }
225
226 return false;
227}
228
229struct child_test {
230 struct child_process process;
231 struct test_suite *test;
232 int test_num;
233 int subtest;
234};
235
236static jmp_buf run_test_jmp_buf;
237
238static void child_test_sig_handler(int sig)
239{
240 siglongjmp(run_test_jmp_buf, sig);
241}
242
243static int run_test_child(struct child_process *process)
244{
245 const int signals[] = {
246 SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGINT, SIGPIPE, SIGQUIT, SIGSEGV, SIGTERM,
247 };
248 struct child_test *child = container_of(process, struct child_test, process);
249 int err;
250
251 err = sigsetjmp(run_test_jmp_buf, 1);
252 if (err) {
253 fprintf(stderr, "\n---- unexpected signal (%d) ----\n", err);
254 err = err > 0 ? -err : -1;
255 goto err_out;
256 }
257
258 for (size_t i = 0; i < ARRAY_SIZE(signals); i++)
259 signal(signals[i], child_test_sig_handler);
260
261 pr_debug("--- start ---\n");
262 pr_debug("test child forked, pid %d\n", getpid());
263 err = test_function(child->test, child->subtest)(child->test, child->subtest);
264 pr_debug("---- end(%d) ----\n", err);
265
266err_out:
267 fflush(NULL);
268 for (size_t i = 0; i < ARRAY_SIZE(signals); i++)
269 signal(signals[i], SIG_DFL);
270 return -err;
271}
272
273#define TEST_RUNNING -3
274
275static int print_test_result(struct test_suite *t, int i, int subtest, int result, int width,
276 int running)
277{
278 if (has_subtests(t)) {
279 int subw = width > 2 ? width - 2 : width;
280
281 pr_info("%3d.%1d: %-*s:", i + 1, subtest + 1, subw, test_description(t, subtest));
282 } else
283 pr_info("%3d: %-*s:", i + 1, width, test_description(t, subtest));
284
285 switch (result) {
286 case TEST_RUNNING:
287 color_fprintf(stderr, PERF_COLOR_YELLOW, " Running (%d active)\n", running);
288 break;
289 case TEST_OK:
290 pr_info(" Ok\n");
291 break;
292 case TEST_SKIP: {
293 const char *reason = skip_reason(t, subtest);
294
295 if (reason)
296 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (%s)\n", reason);
297 else
298 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
299 }
300 break;
301 case TEST_FAIL:
302 default:
303 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
304 break;
305 }
306
307 return 0;
308}
309
310static void finish_test(struct child_test **child_tests, int running_test, int child_test_num,
311 int width)
312{
313 struct child_test *child_test = child_tests[running_test];
314 struct test_suite *t;
315 int i, subi, err;
316 bool err_done = false;
317 struct strbuf err_output = STRBUF_INIT;
318 int last_running = -1;
319 int ret;
320
321 if (child_test == NULL) {
322 /* Test wasn't started. */
323 return;
324 }
325 t = child_test->test;
326 i = child_test->test_num;
327 subi = child_test->subtest;
328 err = child_test->process.err;
329 /*
330 * For test suites with subtests, display the suite name ahead of the
331 * sub test names.
332 */
333 if (has_subtests(t) && subi == 0)
334 pr_info("%3d: %-*s:\n", i + 1, width, test_description(t, -1));
335
336 /*
337 * Busy loop reading from the child's stdout/stderr that are set to be
338 * non-blocking until EOF.
339 */
340 if (err > 0)
341 fcntl(err, F_SETFL, O_NONBLOCK);
342 if (verbose > 1) {
343 if (has_subtests(t))
344 pr_info("%3d.%1d: %s:\n", i + 1, subi + 1, test_description(t, subi));
345 else
346 pr_info("%3d: %s:\n", i + 1, test_description(t, -1));
347 }
348 while (!err_done) {
349 struct pollfd pfds[1] = {
350 { .fd = err,
351 .events = POLLIN | POLLERR | POLLHUP | POLLNVAL,
352 },
353 };
354 if (perf_use_color_default) {
355 int running = 0;
356
357 for (int y = running_test; y < child_test_num; y++) {
358 if (child_tests[y] == NULL)
359 continue;
360 if (check_if_command_finished(&child_tests[y]->process) == 0)
361 running++;
362 }
363 if (running != last_running) {
364 if (last_running != -1) {
365 /*
366 * Erase "Running (.. active)" line
367 * printed before poll/sleep.
368 */
369 fprintf(debug_file(), PERF_COLOR_DELETE_LINE);
370 }
371 print_test_result(t, i, subi, TEST_RUNNING, width, running);
372 last_running = running;
373 }
374 }
375
376 err_done = true;
377 if (err <= 0) {
378 /* No child stderr to poll, sleep for 10ms for child to complete. */
379 usleep(10 * 1000);
380 } else {
381 /* Poll to avoid excessive spinning, timeout set for 100ms. */
382 poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/100);
383 if (pfds[0].revents) {
384 char buf[512];
385 ssize_t len;
386
387 len = read(err, buf, sizeof(buf) - 1);
388
389 if (len > 0) {
390 err_done = false;
391 buf[len] = '\0';
392 strbuf_addstr(&err_output, buf);
393 }
394 }
395 }
396 if (err_done)
397 err_done = check_if_command_finished(&child_test->process);
398 }
399 if (perf_use_color_default && last_running != -1) {
400 /* Erase "Running (.. active)" line printed before poll/sleep. */
401 fprintf(debug_file(), PERF_COLOR_DELETE_LINE);
402 }
403 /* Clean up child process. */
404 ret = finish_command(&child_test->process);
405 if (verbose > 1 || (verbose == 1 && ret == TEST_FAIL))
406 fprintf(stderr, "%s", err_output.buf);
407
408 strbuf_release(&err_output);
409 print_test_result(t, i, subi, ret, width, /*running=*/0);
410 if (err > 0)
411 close(err);
412 zfree(&child_tests[running_test]);
413}
414
415static int start_test(struct test_suite *test, int i, int subi, struct child_test **child,
416 int width, int pass)
417{
418 int err;
419
420 *child = NULL;
421 if (dont_fork) {
422 if (pass == 1) {
423 pr_debug("--- start ---\n");
424 err = test_function(test, subi)(test, subi);
425 pr_debug("---- end ----\n");
426 print_test_result(test, i, subi, err, width, /*running=*/0);
427 }
428 return 0;
429 }
430 if (pass == 1 && !sequential && test_exclusive(test, subi)) {
431 /* When parallel, skip exclusive tests on the first pass. */
432 return 0;
433 }
434 if (pass != 1 && (sequential || !test_exclusive(test, subi))) {
435 /* Sequential and non-exclusive tests were run on the first pass. */
436 return 0;
437 }
438 *child = zalloc(sizeof(**child));
439 if (!*child)
440 return -ENOMEM;
441
442 (*child)->test = test;
443 (*child)->test_num = i;
444 (*child)->subtest = subi;
445 (*child)->process.pid = -1;
446 (*child)->process.no_stdin = 1;
447 if (verbose <= 0) {
448 (*child)->process.no_stdout = 1;
449 (*child)->process.no_stderr = 1;
450 } else {
451 (*child)->process.stdout_to_stderr = 1;
452 (*child)->process.out = -1;
453 (*child)->process.err = -1;
454 }
455 (*child)->process.no_exec_cmd = run_test_child;
456 if (sequential || pass == 2) {
457 err = start_command(&(*child)->process);
458 if (err)
459 return err;
460 finish_test(child, /*running_test=*/0, /*child_test_num=*/1, width);
461 return 0;
462 }
463 return start_command(&(*child)->process);
464}
465
466/* State outside of __cmd_test for the sake of the signal handler. */
467
468static size_t num_tests;
469static struct child_test **child_tests;
470static jmp_buf cmd_test_jmp_buf;
471
472static void cmd_test_sig_handler(int sig)
473{
474 siglongjmp(cmd_test_jmp_buf, sig);
475}
476
477static int __cmd_test(struct test_suite **suites, int argc, const char *argv[],
478 struct intlist *skiplist)
479{
480 static int width = 0;
481 int err = 0;
482
483 for (struct test_suite **t = suites; *t; t++) {
484 int len = strlen(test_description(*t, -1));
485
486 if (width < len)
487 width = len;
488
489 if (has_subtests(*t)) {
490 for (int subi = 0, subn = num_subtests(*t); subi < subn; subi++) {
491 len = strlen(test_description(*t, subi));
492 if (width < len)
493 width = len;
494 num_tests++;
495 }
496 } else {
497 num_tests++;
498 }
499 }
500 child_tests = calloc(num_tests, sizeof(*child_tests));
501 if (!child_tests)
502 return -ENOMEM;
503
504 err = sigsetjmp(cmd_test_jmp_buf, 1);
505 if (err) {
506 pr_err("\nSignal (%d) while running tests.\nTerminating tests with the same signal\n",
507 err);
508 for (size_t x = 0; x < num_tests; x++) {
509 struct child_test *child_test = child_tests[x];
510
511 if (!child_test || child_test->process.pid <= 0)
512 continue;
513
514 pr_debug3("Killing %d pid %d\n",
515 child_test->test_num + 1,
516 child_test->process.pid);
517 kill(child_test->process.pid, err);
518 }
519 goto err_out;
520 }
521 signal(SIGINT, cmd_test_sig_handler);
522 signal(SIGTERM, cmd_test_sig_handler);
523
524 /*
525 * In parallel mode pass 1 runs non-exclusive tests in parallel, pass 2
526 * runs the exclusive tests sequentially. In other modes all tests are
527 * run in pass 1.
528 */
529 for (int pass = 1; pass <= 2; pass++) {
530 int child_test_num = 0;
531 int i = 0;
532
533 for (struct test_suite **t = suites; *t; t++) {
534 int curr = i++;
535
536 if (!perf_test__matches(test_description(*t, -1), curr, argc, argv)) {
537 /*
538 * Test suite shouldn't be run based on
539 * description. See if subtest should.
540 */
541 bool skip = true;
542
543 for (int subi = 0, subn = num_subtests(*t); subi < subn; subi++) {
544 if (perf_test__matches(test_description(*t, subi),
545 curr, argc, argv))
546 skip = false;
547 }
548
549 if (skip)
550 continue;
551 }
552
553 if (intlist__find(skiplist, i)) {
554 pr_info("%3d: %-*s:", curr + 1, width, test_description(*t, -1));
555 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
556 continue;
557 }
558
559 if (!has_subtests(*t)) {
560 err = start_test(*t, curr, -1, &child_tests[child_test_num++],
561 width, pass);
562 if (err)
563 goto err_out;
564 continue;
565 }
566 for (int subi = 0, subn = num_subtests(*t); subi < subn; subi++) {
567 if (!perf_test__matches(test_description(*t, subi),
568 curr, argc, argv))
569 continue;
570
571 err = start_test(*t, curr, subi, &child_tests[child_test_num++],
572 width, pass);
573 if (err)
574 goto err_out;
575 }
576 }
577 if (!sequential) {
578 /* Parallel mode starts tests but doesn't finish them. Do that now. */
579 for (size_t x = 0; x < num_tests; x++)
580 finish_test(child_tests, x, num_tests, width);
581 }
582 }
583err_out:
584 signal(SIGINT, SIG_DFL);
585 signal(SIGTERM, SIG_DFL);
586 if (err) {
587 pr_err("Internal test harness failure. Completing any started tests:\n:");
588 for (size_t x = 0; x < num_tests; x++)
589 finish_test(child_tests, x, num_tests, width);
590 }
591 free(child_tests);
592 return err;
593}
594
595static int perf_test__list(struct test_suite **suites, int argc, const char **argv)
596{
597 int i = 0;
598
599 for (struct test_suite **t = suites; *t; t++) {
600 int curr = i++;
601
602 if (!perf_test__matches(test_description(*t, -1), curr, argc, argv))
603 continue;
604
605 pr_info("%3d: %s\n", i, test_description(*t, -1));
606
607 if (has_subtests(*t)) {
608 int subn = num_subtests(*t);
609 int subi;
610
611 for (subi = 0; subi < subn; subi++)
612 pr_info("%3d:%1d: %s\n", i, subi + 1,
613 test_description(*t, subi));
614 }
615 }
616 return 0;
617}
618
619static int workloads__fprintf_list(FILE *fp)
620{
621 struct test_workload *twl;
622 int printed = 0;
623
624 workloads__for_each(twl)
625 printed += fprintf(fp, "%s\n", twl->name);
626
627 return printed;
628}
629
630static int run_workload(const char *work, int argc, const char **argv)
631{
632 struct test_workload *twl;
633
634 workloads__for_each(twl) {
635 if (!strcmp(twl->name, work))
636 return twl->func(argc, argv);
637 }
638
639 pr_info("No workload found: %s\n", work);
640 return -1;
641}
642
643static int perf_test__config(const char *var, const char *value,
644 void *data __maybe_unused)
645{
646 if (!strcmp(var, "annotate.objdump"))
647 test_objdump_path = value;
648
649 return 0;
650}
651
652static struct test_suite **build_suites(void)
653{
654 /*
655 * TODO: suites is static to avoid needing to clean up the scripts tests
656 * for leak sanitizer.
657 */
658 static struct test_suite **suites[] = {
659 generic_tests,
660 arch_tests,
661 NULL,
662 };
663 struct test_suite **result;
664 struct test_suite *t;
665 size_t n = 0, num_suites = 0;
666
667 if (suites[2] == NULL)
668 suites[2] = create_script_test_suites();
669
670#define for_each_test(t) \
671 for (size_t i = 0, j = 0; i < ARRAY_SIZE(suites); i++, j = 0) \
672 while ((t = suites[i][j++]) != NULL)
673
674 for_each_test(t)
675 num_suites++;
676
677 result = calloc(num_suites + 1, sizeof(struct test_suite *));
678
679 for (int pass = 1; pass <= 2; pass++) {
680 for_each_test(t) {
681 bool exclusive = false;
682
683 if (!has_subtests(t)) {
684 exclusive = test_exclusive(t, -1);
685 } else {
686 for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
687 if (test_exclusive(t, subi)) {
688 exclusive = true;
689 break;
690 }
691 }
692 }
693 if ((!exclusive && pass == 1) || (exclusive && pass == 2))
694 result[n++] = t;
695 }
696 }
697 return result;
698#undef for_each_test
699}
700
701int cmd_test(int argc, const char **argv)
702{
703 const char *test_usage[] = {
704 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
705 NULL,
706 };
707 const char *skip = NULL;
708 const char *workload = NULL;
709 bool list_workloads = false;
710 const struct option test_options[] = {
711 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
712 OPT_INCR('v', "verbose", &verbose,
713 "be more verbose (show symbol address, etc)"),
714 OPT_BOOLEAN('F', "dont-fork", &dont_fork,
715 "Do not fork for testcase"),
716 OPT_BOOLEAN('S', "sequential", &sequential,
717 "Run the tests one after another rather than in parallel"),
718 OPT_STRING('w', "workload", &workload, "work", "workload to run for testing, use '--list-workloads' to list the available ones."),
719 OPT_BOOLEAN(0, "list-workloads", &list_workloads, "List the available builtin workloads to use with -w/--workload"),
720 OPT_STRING(0, "dso", &dso_to_test, "dso", "dso to test"),
721 OPT_STRING(0, "objdump", &test_objdump_path, "path",
722 "objdump binary to use for disassembly and annotations"),
723 OPT_END()
724 };
725 const char * const test_subcommands[] = { "list", NULL };
726 struct intlist *skiplist = NULL;
727 int ret = hists__init();
728 struct test_suite **suites;
729
730 if (ret < 0)
731 return ret;
732
733 perf_config(perf_test__config, NULL);
734
735 /* Unbuffered output */
736 setvbuf(stdout, NULL, _IONBF, 0);
737
738 argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
739 if (argc >= 1 && !strcmp(argv[0], "list")) {
740 suites = build_suites();
741 ret = perf_test__list(suites, argc - 1, argv + 1);
742 free(suites);
743 return ret;
744 }
745
746 if (workload)
747 return run_workload(workload, argc, argv);
748
749 if (list_workloads) {
750 workloads__fprintf_list(stdout);
751 return 0;
752 }
753
754 if (dont_fork)
755 sequential = true;
756
757 symbol_conf.priv_size = sizeof(int);
758 symbol_conf.try_vmlinux_path = true;
759
760
761 if (symbol__init(NULL) < 0)
762 return -1;
763
764 if (skip != NULL)
765 skiplist = intlist__new(skip);
766 /*
767 * Tests that create BPF maps, for instance, need more than the 64K
768 * default:
769 */
770 rlimit__bump_memlock();
771
772 suites = build_suites();
773 ret = __cmd_test(suites, argc, argv, skiplist);
774 free(suites);
775 return ret;
776}