blob: 574a215e800b502abeb05fa9e874421db8e3f79a [file] [log] [blame]
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +02001#include "builtin.h"
2
3#include "util/util.h"
4#include "util/cache.h"
5#include "util/symbol.h"
6#include "util/thread.h"
7#include "util/header.h"
Ingo Molnarcf723442009-11-28 10:11:00 +01008#include "util/exec_cmd.h"
9#include "util/trace-event.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020010#include "util/session.h"
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020011
Tom Zanussi956ffd02009-11-25 01:15:46 -060012static char const *script_name;
13static char const *generate_script_lang;
14
Tom Zanussi586bc5c2009-12-15 02:53:35 -060015static int default_start_script(const char *script __unused,
16 int argc __unused,
17 const char **argv __unused)
Tom Zanussi956ffd02009-11-25 01:15:46 -060018{
19 return 0;
20}
21
22static int default_stop_script(void)
23{
24 return 0;
25}
26
Tom Zanussi586bc5c2009-12-15 02:53:35 -060027static int default_generate_script(const char *outfile __unused)
Tom Zanussi956ffd02009-11-25 01:15:46 -060028{
29 return 0;
30}
31
32static struct scripting_ops default_scripting_ops = {
33 .start_script = default_start_script,
34 .stop_script = default_stop_script,
35 .process_event = print_event,
36 .generate_script = default_generate_script,
37};
38
39static struct scripting_ops *scripting_ops;
40
41static void setup_scripting(void)
42{
43 /* make sure PERF_EXEC_PATH is set for scripts */
44 perf_set_argv_exec_path(perf_exec_path());
45
Tom Zanussi16c632d2009-11-25 01:15:48 -060046 setup_perl_scripting();
47
Tom Zanussi956ffd02009-11-25 01:15:46 -060048 scripting_ops = &default_scripting_ops;
49}
50
51static int cleanup_scripting(void)
52{
53 return scripting_ops->stop_script();
54}
55
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020056#include "util/parse-options.h"
57
58#include "perf.h"
59#include "util/debug.h"
60
61#include "util/trace-event.h"
Tom Zanussi956ffd02009-11-25 01:15:46 -060062#include "util/exec_cmd.h"
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020063
Tom Zanussi956ffd02009-11-25 01:15:46 -060064static char const *input_name = "perf.data";
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020065
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -020066static int process_sample_event(event_t *event, struct perf_session *session)
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020067{
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +090068 struct sample_data data;
69 struct thread *thread;
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020070
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +090071 memset(&data, 0, sizeof(data));
72 data.time = -1;
73 data.cpu = -1;
74 data.period = 1;
Ingo Molnar6ddf2592009-09-03 12:00:22 +020075
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -020076 event__parse_sample(event, session->sample_type, &data);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020077
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -020078 dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020079 event->header.misc,
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +090080 data.pid, data.tid,
81 (void *)(long)data.ip,
82 (long long)data.period);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020083
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -020084 thread = perf_session__findnew(session, event->ip.pid);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020085 if (thread == NULL) {
Arnaldo Carvalho de Melo6beba7a2009-10-21 17:34:06 -020086 pr_debug("problem processing %d event, skipping it.\n",
87 event->header.type);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020088 return -1;
89 }
90
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -020091 if (session->sample_type & PERF_SAMPLE_RAW) {
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +020092 /*
93 * FIXME: better resolve from pid from the struct trace_entry
94 * field, although it should be the same than this perf
95 * event pid
96 */
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +090097 scripting_ops->process_event(data.cpu, data.raw_data,
98 data.raw_size,
99 data.time, thread->comm);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200100 }
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200101
Arnaldo Carvalho de Melof823e442009-12-14 15:06:01 -0200102 session->events_stats.total += data.period;
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200103 return 0;
104}
105
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -0200106static int sample_type_check(struct perf_session *session)
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200107{
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -0200108 if (!(session->sample_type & PERF_SAMPLE_RAW)) {
Frederic Weisbecker016e92f2009-10-07 12:47:31 +0200109 fprintf(stderr,
110 "No trace sample to read. Did you call perf record "
111 "without -R?");
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200112 return -1;
113 }
114
115 return 0;
116}
117
Arnaldo Carvalho de Melo301a0b02009-12-13 19:50:25 -0200118static struct perf_event_ops event_ops = {
Frederic Weisbecker016e92f2009-10-07 12:47:31 +0200119 .process_sample_event = process_sample_event,
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200120 .process_comm_event = event__process_comm,
Frederic Weisbecker016e92f2009-10-07 12:47:31 +0200121 .sample_type_check = sample_type_check,
122};
123
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200124static int __cmd_trace(struct perf_session *session)
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200125{
Arnaldo Carvalho de Meloec913362009-12-13 19:50:27 -0200126 return perf_session__process_events(session, &event_ops);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200127}
128
Tom Zanussi956ffd02009-11-25 01:15:46 -0600129struct script_spec {
130 struct list_head node;
131 struct scripting_ops *ops;
132 char spec[0];
133};
134
135LIST_HEAD(script_specs);
136
137static struct script_spec *script_spec__new(const char *spec,
138 struct scripting_ops *ops)
139{
140 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
141
142 if (s != NULL) {
143 strcpy(s->spec, spec);
144 s->ops = ops;
145 }
146
147 return s;
148}
149
150static void script_spec__delete(struct script_spec *s)
151{
152 free(s->spec);
153 free(s);
154}
155
156static void script_spec__add(struct script_spec *s)
157{
158 list_add_tail(&s->node, &script_specs);
159}
160
161static struct script_spec *script_spec__find(const char *spec)
162{
163 struct script_spec *s;
164
165 list_for_each_entry(s, &script_specs, node)
166 if (strcasecmp(s->spec, spec) == 0)
167 return s;
168 return NULL;
169}
170
171static struct script_spec *script_spec__findnew(const char *spec,
172 struct scripting_ops *ops)
173{
174 struct script_spec *s = script_spec__find(spec);
175
176 if (s)
177 return s;
178
179 s = script_spec__new(spec, ops);
180 if (!s)
181 goto out_delete_spec;
182
183 script_spec__add(s);
184
185 return s;
186
187out_delete_spec:
188 script_spec__delete(s);
189
190 return NULL;
191}
192
193int script_spec_register(const char *spec, struct scripting_ops *ops)
194{
195 struct script_spec *s;
196
197 s = script_spec__find(spec);
198 if (s)
199 return -1;
200
201 s = script_spec__findnew(spec, ops);
202 if (!s)
203 return -1;
204
205 return 0;
206}
207
208static struct scripting_ops *script_spec__lookup(const char *spec)
209{
210 struct script_spec *s = script_spec__find(spec);
211 if (!s)
212 return NULL;
213
214 return s->ops;
215}
216
217static void list_available_languages(void)
218{
219 struct script_spec *s;
220
221 fprintf(stderr, "\n");
222 fprintf(stderr, "Scripting language extensions (used in "
223 "perf trace -s [spec:]script.[spec]):\n\n");
224
225 list_for_each_entry(s, &script_specs, node)
226 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
227
228 fprintf(stderr, "\n");
229}
230
231static int parse_scriptname(const struct option *opt __used,
232 const char *str, int unset __used)
233{
234 char spec[PATH_MAX];
235 const char *script, *ext;
236 int len;
237
238 if (strcmp(str, "list") == 0) {
239 list_available_languages();
240 return 0;
241 }
242
243 script = strchr(str, ':');
244 if (script) {
245 len = script - str;
246 if (len >= PATH_MAX) {
247 fprintf(stderr, "invalid language specifier");
248 return -1;
249 }
250 strncpy(spec, str, len);
251 spec[len] = '\0';
252 scripting_ops = script_spec__lookup(spec);
253 if (!scripting_ops) {
254 fprintf(stderr, "invalid language specifier");
255 return -1;
256 }
257 script++;
258 } else {
259 script = str;
260 ext = strchr(script, '.');
261 if (!ext) {
262 fprintf(stderr, "invalid script extension");
263 return -1;
264 }
265 scripting_ops = script_spec__lookup(++ext);
266 if (!scripting_ops) {
267 fprintf(stderr, "invalid script extension");
268 return -1;
269 }
270 }
271
272 script_name = strdup(script);
273
274 return 0;
275}
276
Tom Zanussi4b9c0c52009-12-15 02:53:38 -0600277#define for_each_lang(scripts_dir, lang_dirent, lang_next) \
278 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
279 lang_next) \
280 if (lang_dirent.d_type == DT_DIR && \
281 (strcmp(lang_dirent.d_name, ".")) && \
282 (strcmp(lang_dirent.d_name, "..")))
283
284#define for_each_script(lang_dir, script_dirent, script_next) \
285 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
286 script_next) \
287 if (script_dirent.d_type != DT_DIR)
288
289
290#define RECORD_SUFFIX "-record"
291#define REPORT_SUFFIX "-report"
292
293struct script_desc {
294 struct list_head node;
295 char *name;
296 char *half_liner;
297 char *args;
298};
299
300LIST_HEAD(script_descs);
301
302static struct script_desc *script_desc__new(const char *name)
303{
304 struct script_desc *s = zalloc(sizeof(*s));
305
306 if (s != NULL)
307 s->name = strdup(name);
308
309 return s;
310}
311
312static void script_desc__delete(struct script_desc *s)
313{
314 free(s->name);
315 free(s);
316}
317
318static void script_desc__add(struct script_desc *s)
319{
320 list_add_tail(&s->node, &script_descs);
321}
322
323static struct script_desc *script_desc__find(const char *name)
324{
325 struct script_desc *s;
326
327 list_for_each_entry(s, &script_descs, node)
328 if (strcasecmp(s->name, name) == 0)
329 return s;
330 return NULL;
331}
332
333static struct script_desc *script_desc__findnew(const char *name)
334{
335 struct script_desc *s = script_desc__find(name);
336
337 if (s)
338 return s;
339
340 s = script_desc__new(name);
341 if (!s)
342 goto out_delete_desc;
343
344 script_desc__add(s);
345
346 return s;
347
348out_delete_desc:
349 script_desc__delete(s);
350
351 return NULL;
352}
353
354static char *ends_with(char *str, const char *suffix)
355{
356 size_t suffix_len = strlen(suffix);
357 char *p = str;
358
359 if (strlen(str) > suffix_len) {
360 p = str + strlen(str) - suffix_len;
361 if (!strncmp(p, suffix, suffix_len))
362 return p;
363 }
364
365 return NULL;
366}
367
368static char *ltrim(char *str)
369{
370 int len = strlen(str);
371
372 while (len && isspace(*str)) {
373 len--;
374 str++;
375 }
376
377 return str;
378}
379
380static int read_script_info(struct script_desc *desc, const char *filename)
381{
382 char line[BUFSIZ], *p;
383 FILE *fp;
384
385 fp = fopen(filename, "r");
386 if (!fp)
387 return -1;
388
389 while (fgets(line, sizeof(line), fp)) {
390 p = ltrim(line);
391 if (strlen(p) == 0)
392 continue;
393 if (*p != '#')
394 continue;
395 p++;
396 if (strlen(p) && *p == '!')
397 continue;
398
399 p = ltrim(p);
400 if (strlen(p) && p[strlen(p) - 1] == '\n')
401 p[strlen(p) - 1] = '\0';
402
403 if (!strncmp(p, "description:", strlen("description:"))) {
404 p += strlen("description:");
405 desc->half_liner = strdup(ltrim(p));
406 continue;
407 }
408
409 if (!strncmp(p, "args:", strlen("args:"))) {
410 p += strlen("args:");
411 desc->args = strdup(ltrim(p));
412 continue;
413 }
414 }
415
416 fclose(fp);
417
418 return 0;
419}
420
421static int list_available_scripts(const struct option *opt __used,
422 const char *s __used, int unset __used)
423{
424 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
425 char scripts_path[MAXPATHLEN];
426 DIR *scripts_dir, *lang_dir;
427 char script_path[MAXPATHLEN];
428 char lang_path[MAXPATHLEN];
429 struct script_desc *desc;
430 char first_half[BUFSIZ];
431 char *script_root;
432 char *str;
433
434 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
435
436 scripts_dir = opendir(scripts_path);
437 if (!scripts_dir)
438 return -1;
439
440 for_each_lang(scripts_dir, lang_dirent, lang_next) {
441 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
442 lang_dirent.d_name);
443 lang_dir = opendir(lang_path);
444 if (!lang_dir)
445 continue;
446
447 for_each_script(lang_dir, script_dirent, script_next) {
448 script_root = strdup(script_dirent.d_name);
449 str = ends_with(script_root, REPORT_SUFFIX);
450 if (str) {
451 *str = '\0';
452 desc = script_desc__findnew(script_root);
453 snprintf(script_path, MAXPATHLEN, "%s/%s",
454 lang_path, script_dirent.d_name);
455 read_script_info(desc, script_path);
456 }
457 free(script_root);
458 }
459 }
460
461 fprintf(stdout, "List of available trace scripts:\n");
462 list_for_each_entry(desc, &script_descs, node) {
463 sprintf(first_half, "%s %s", desc->name,
464 desc->args ? desc->args : "");
465 fprintf(stdout, " %-36s %s\n", first_half,
466 desc->half_liner ? desc->half_liner : "");
467 }
468
469 exit(0);
470}
471
Tom Zanussi38752942009-12-15 02:53:39 -0600472static char *get_script_path(const char *script_root, const char *suffix)
473{
474 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
475 char scripts_path[MAXPATHLEN];
476 char script_path[MAXPATHLEN];
477 DIR *scripts_dir, *lang_dir;
478 char lang_path[MAXPATHLEN];
479 char *str, *__script_root;
480 char *path = NULL;
481
482 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
483
484 scripts_dir = opendir(scripts_path);
485 if (!scripts_dir)
486 return NULL;
487
488 for_each_lang(scripts_dir, lang_dirent, lang_next) {
489 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
490 lang_dirent.d_name);
491 lang_dir = opendir(lang_path);
492 if (!lang_dir)
493 continue;
494
495 for_each_script(lang_dir, script_dirent, script_next) {
496 __script_root = strdup(script_dirent.d_name);
497 str = ends_with(__script_root, suffix);
498 if (str) {
499 *str = '\0';
500 if (strcmp(__script_root, script_root))
501 continue;
502 snprintf(script_path, MAXPATHLEN, "%s/%s",
503 lang_path, script_dirent.d_name);
504 path = strdup(script_path);
505 free(__script_root);
506 break;
507 }
508 free(__script_root);
509 }
510 }
511
512 return path;
513}
514
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200515static const char * const trace_usage[] = {
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200516 "perf trace [<options>] <command>",
517 NULL
518};
519
520static const struct option options[] = {
521 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
522 "dump raw trace in ASCII"),
523 OPT_BOOLEAN('v', "verbose", &verbose,
524 "be more verbose (show symbol address, etc)"),
Tom Zanussi4b9c0c52009-12-15 02:53:38 -0600525 OPT_BOOLEAN('L', "Latency", &latency_format,
Steven Rostedtcda48462009-10-14 15:43:42 -0400526 "show latency attributes (irqs/preemption disabled, etc)"),
Tom Zanussi4b9c0c52009-12-15 02:53:38 -0600527 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
528 list_available_scripts),
Tom Zanussi956ffd02009-11-25 01:15:46 -0600529 OPT_CALLBACK('s', "script", NULL, "name",
530 "script file name (lang:script name, script name, or *)",
531 parse_scriptname),
532 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
533 "generate perf-trace.xx script in specified language"),
534
Masami Hiramatsu19096292009-08-21 14:56:03 -0400535 OPT_END()
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200536};
537
538int cmd_trace(int argc, const char **argv, const char *prefix __used)
539{
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200540 struct perf_session *session;
Tom Zanussi38752942009-12-15 02:53:39 -0600541 const char *suffix = NULL;
542 const char **__argv;
543 char *script_path;
544 int i, err;
545
546 if (argc >= 2 && strncmp(argv[1], "rec", strlen("rec")) == 0) {
547 if (argc < 3) {
548 fprintf(stderr,
549 "Please specify a record script\n");
550 return -1;
551 }
552 suffix = RECORD_SUFFIX;
553 }
554
555 if (argc >= 2 && strncmp(argv[1], "rep", strlen("rep")) == 0) {
556 if (argc < 3) {
557 fprintf(stderr,
558 "Please specify a report script\n");
559 return -1;
560 }
561 suffix = REPORT_SUFFIX;
562 }
563
564 if (suffix) {
565 script_path = get_script_path(argv[2], suffix);
566 if (!script_path) {
567 fprintf(stderr, "script not found\n");
568 return -1;
569 }
570
571 __argv = malloc((argc + 1) * sizeof(const char *));
572 __argv[0] = "/bin/sh";
573 __argv[1] = script_path;
574 for (i = 3; i < argc; i++)
575 __argv[i - 1] = argv[i];
576 __argv[argc - 1] = NULL;
577
578 execvp("/bin/sh", (char **)__argv);
579 exit(-1);
580 }
Tom Zanussi956ffd02009-11-25 01:15:46 -0600581
Tom Zanussi956ffd02009-11-25 01:15:46 -0600582 setup_scripting();
583
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200584 argc = parse_options(argc, argv, options, trace_usage,
Tom Zanussi586bc5c2009-12-15 02:53:35 -0600585 PARSE_OPT_STOP_AT_NON_OPTION);
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200586
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -0200587 if (symbol__init() < 0)
588 return -1;
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200589 setup_pager();
590
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -0200591 session = perf_session__new(input_name, O_RDONLY, 0);
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200592 if (session == NULL)
593 return -ENOMEM;
594
Tom Zanussi956ffd02009-11-25 01:15:46 -0600595 if (generate_script_lang) {
596 struct stat perf_stat;
597
598 int input = open(input_name, O_RDONLY);
599 if (input < 0) {
600 perror("failed to open file");
601 exit(-1);
602 }
603
604 err = fstat(input, &perf_stat);
605 if (err < 0) {
606 perror("failed to stat file");
607 exit(-1);
608 }
609
610 if (!perf_stat.st_size) {
611 fprintf(stderr, "zero-sized file, nothing to do!\n");
612 exit(0);
613 }
614
615 scripting_ops = script_spec__lookup(generate_script_lang);
616 if (!scripting_ops) {
617 fprintf(stderr, "invalid language specifier");
618 return -1;
619 }
620
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200621 perf_header__read(&session->header, input);
Tom Zanussi956ffd02009-11-25 01:15:46 -0600622 err = scripting_ops->generate_script("perf-trace");
623 goto out;
624 }
625
626 if (script_name) {
Tom Zanussi586bc5c2009-12-15 02:53:35 -0600627 err = scripting_ops->start_script(script_name, argc, argv);
Tom Zanussi956ffd02009-11-25 01:15:46 -0600628 if (err)
629 goto out;
630 }
631
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200632 err = __cmd_trace(session);
Tom Zanussi956ffd02009-11-25 01:15:46 -0600633
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200634 perf_session__delete(session);
Tom Zanussi956ffd02009-11-25 01:15:46 -0600635 cleanup_scripting();
636out:
637 return err;
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200638}