1#include "builtin.h"
2
3#include "perf.h"
4#include "util/cache.h"
5#include "util/debug.h"
6#include "util/exec_cmd.h"
7#include "util/header.h"
8#include "util/parse-options.h"
9#include "util/session.h"
10#include "util/symbol.h"
11#include "util/thread.h"
12#include "util/trace-event.h"
13#include "util/parse-options.h"
14#include "util/util.h"
15#include "util/evlist.h"
16#include "util/evsel.h"
17
18static char const *script_name;
19static char const *generate_script_lang;
20static bool debug_mode;
21static u64 last_timestamp;
22static u64 nr_unordered;
23extern const struct option record_options[];
24static bool no_callchain;
25
26enum perf_output_field {
27 PERF_OUTPUT_COMM = 1U << 0,
28 PERF_OUTPUT_TID = 1U << 1,
29 PERF_OUTPUT_PID = 1U << 2,
30 PERF_OUTPUT_TIME = 1U << 3,
31 PERF_OUTPUT_CPU = 1U << 4,
32 PERF_OUTPUT_EVNAME = 1U << 5,
33 PERF_OUTPUT_TRACE = 1U << 6,
34 PERF_OUTPUT_SYM = 1U << 7,
35};
36
37struct output_option {
38 const char *str;
39 enum perf_output_field field;
40} all_output_options[] = {
41 {.str = "comm", .field = PERF_OUTPUT_COMM},
42 {.str = "tid", .field = PERF_OUTPUT_TID},
43 {.str = "pid", .field = PERF_OUTPUT_PID},
44 {.str = "time", .field = PERF_OUTPUT_TIME},
45 {.str = "cpu", .field = PERF_OUTPUT_CPU},
46 {.str = "event", .field = PERF_OUTPUT_EVNAME},
47 {.str = "trace", .field = PERF_OUTPUT_TRACE},
48 {.str = "sym", .field = PERF_OUTPUT_SYM},
49};
50
51
52static u64 output_fields[PERF_TYPE_MAX] = {
53 [PERF_TYPE_HARDWARE] = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | \
54 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | \
55 PERF_OUTPUT_EVNAME | PERF_OUTPUT_SYM,
56
57 [PERF_TYPE_SOFTWARE] = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | \
58 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | \
59 PERF_OUTPUT_EVNAME | PERF_OUTPUT_SYM,
60
61 [PERF_TYPE_TRACEPOINT] = PERF_OUTPUT_COMM | PERF_OUTPUT_TID | \
62 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME | \
63 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
64};
65
66static bool output_set_by_user;
67
68#define PRINT_FIELD(x) (output_fields[attr->type] & PERF_OUTPUT_##x)
69
70static int perf_session__check_attr(struct perf_session *session,
71 struct perf_event_attr *attr)
72{
73 if (PRINT_FIELD(TRACE) &&
74 !perf_session__has_traces(session, "record -R"))
75 return -EINVAL;
76
77 if (PRINT_FIELD(SYM)) {
78 if (!(session->sample_type & PERF_SAMPLE_IP)) {
79 pr_err("Samples do not contain IP data.\n");
80 return -EINVAL;
81 }
82 if (!no_callchain &&
83 !(session->sample_type & PERF_SAMPLE_CALLCHAIN))
84 symbol_conf.use_callchain = false;
85 }
86
87 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
88 !(session->sample_type & PERF_SAMPLE_TID)) {
89 pr_err("Samples do not contain TID/PID data.\n");
90 return -EINVAL;
91 }
92
93 if (PRINT_FIELD(TIME) &&
94 !(session->sample_type & PERF_SAMPLE_TIME)) {
95 pr_err("Samples do not contain timestamps.\n");
96 return -EINVAL;
97 }
98
99 if (PRINT_FIELD(CPU) &&
100 !(session->sample_type & PERF_SAMPLE_CPU)) {
101 pr_err("Samples do not contain cpu.\n");
102 return -EINVAL;
103 }
104
105 return 0;
106}
107
108static void print_sample_start(struct perf_sample *sample,
109 struct thread *thread,
110 struct perf_event_attr *attr)
111{
112 int type;
113 struct event *event;
114 const char *evname = NULL;
115 unsigned long secs;
116 unsigned long usecs;
117 unsigned long long nsecs;
118
119 if (PRINT_FIELD(COMM)) {
120 if (latency_format)
121 printf("%8.8s ", thread->comm);
122 else if (PRINT_FIELD(SYM) && symbol_conf.use_callchain)
123 printf("%s ", thread->comm);
124 else
125 printf("%16s ", thread->comm);
126 }
127
128 if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
129 printf("%5d/%-5d ", sample->pid, sample->tid);
130 else if (PRINT_FIELD(PID))
131 printf("%5d ", sample->pid);
132 else if (PRINT_FIELD(TID))
133 printf("%5d ", sample->tid);
134
135 if (PRINT_FIELD(CPU)) {
136 if (latency_format)
137 printf("%3d ", sample->cpu);
138 else
139 printf("[%03d] ", sample->cpu);
140 }
141
142 if (PRINT_FIELD(TIME)) {
143 nsecs = sample->time;
144 secs = nsecs / NSECS_PER_SEC;
145 nsecs -= secs * NSECS_PER_SEC;
146 usecs = nsecs / NSECS_PER_USEC;
147 printf("%5lu.%06lu: ", secs, usecs);
148 }
149
150 if (PRINT_FIELD(EVNAME)) {
151 if (attr->type == PERF_TYPE_TRACEPOINT) {
152 type = trace_parse_common_type(sample->raw_data);
153 event = trace_find_event(type);
154 if (event)
155 evname = event->name;
156 } else
157 evname = __event_name(attr->type, attr->config);
158
159 printf("%s: ", evname ? evname : "(unknown)");
160 }
161}
162
163static void process_event(union perf_event *event __unused,
164 struct perf_sample *sample,
165 struct perf_evsel *evsel,
166 struct perf_session *session,
167 struct thread *thread)
168{
169 struct perf_event_attr *attr = &evsel->attr;
170
171 if (output_fields[attr->type] == 0)
172 return;
173
174 if (perf_session__check_attr(session, attr) < 0)
175 return;
176
177 print_sample_start(sample, thread, attr);
178
179 if (PRINT_FIELD(TRACE))
180 print_trace_event(sample->cpu, sample->raw_data,
181 sample->raw_size);
182
183 if (PRINT_FIELD(SYM)) {
184 if (!symbol_conf.use_callchain)
185 printf(" ");
186 else
187 printf("\n");
188 perf_session__print_symbols(event, sample, session);
189 }
190
191 printf("\n");
192}
193
194static int default_start_script(const char *script __unused,
195 int argc __unused,
196 const char **argv __unused)
197{
198 return 0;
199}
200
201static int default_stop_script(void)
202{
203 return 0;
204}
205
206static int default_generate_script(const char *outfile __unused)
207{
208 return 0;
209}
210
211static struct scripting_ops default_scripting_ops = {
212 .start_script = default_start_script,
213 .stop_script = default_stop_script,
214 .process_event = process_event,
215 .generate_script = default_generate_script,
216};
217
218static struct scripting_ops *scripting_ops;
219
220static void setup_scripting(void)
221{
222 setup_perl_scripting();
223 setup_python_scripting();
224
225 scripting_ops = &default_scripting_ops;
226}
227
228static int cleanup_scripting(void)
229{
230 pr_debug("\nperf script stopped\n");
231
232 return scripting_ops->stop_script();
233}
234
235static char const *input_name = "perf.data";
236
237static int process_sample_event(union perf_event *event,
238 struct perf_sample *sample,
239 struct perf_evsel *evsel,
240 struct perf_session *session)
241{
242 struct thread *thread = perf_session__findnew(session, event->ip.pid);
243
244 if (thread == NULL) {
245 pr_debug("problem processing %d event, skipping it.\n",
246 event->header.type);
247 return -1;
248 }
249
250 if (debug_mode) {
251 if (sample->time < last_timestamp) {
252 pr_err("Samples misordered, previous: %" PRIu64
253 " this: %" PRIu64 "\n", last_timestamp,
254 sample->time);
255 nr_unordered++;
256 }
257 last_timestamp = sample->time;
258 return 0;
259 }
260 scripting_ops->process_event(event, sample, evsel, session, thread);
261
262 session->hists.stats.total_period += sample->period;
263 return 0;
264}
265
266static struct perf_event_ops event_ops = {
267 .sample = process_sample_event,
268 .mmap = perf_event__process_mmap,
269 .comm = perf_event__process_comm,
270 .exit = perf_event__process_task,
271 .fork = perf_event__process_task,
272 .attr = perf_event__process_attr,
273 .event_type = perf_event__process_event_type,
274 .tracing_data = perf_event__process_tracing_data,
275 .build_id = perf_event__process_build_id,
276 .ordered_samples = true,
277 .ordering_requires_timestamps = true,
278};
279
280extern volatile int session_done;
281
282static void sig_handler(int sig __unused)
283{
284 session_done = 1;
285}
286
287static int __cmd_script(struct perf_session *session)
288{
289 int ret;
290
291 signal(SIGINT, sig_handler);
292
293 ret = perf_session__process_events(session, &event_ops);
294
295 if (debug_mode)
296 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
297
298 return ret;
299}
300
301struct script_spec {
302 struct list_head node;
303 struct scripting_ops *ops;
304 char spec[0];
305};
306
307static LIST_HEAD(script_specs);
308
309static struct script_spec *script_spec__new(const char *spec,
310 struct scripting_ops *ops)
311{
312 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
313
314 if (s != NULL) {
315 strcpy(s->spec, spec);
316 s->ops = ops;
317 }
318
319 return s;
320}
321
322static void script_spec__delete(struct script_spec *s)
323{
324 free(s->spec);
325 free(s);
326}
327
328static void script_spec__add(struct script_spec *s)
329{
330 list_add_tail(&s->node, &script_specs);
331}
332
333static struct script_spec *script_spec__find(const char *spec)
334{
335 struct script_spec *s;
336
337 list_for_each_entry(s, &script_specs, node)
338 if (strcasecmp(s->spec, spec) == 0)
339 return s;
340 return NULL;
341}
342
343static struct script_spec *script_spec__findnew(const char *spec,
344 struct scripting_ops *ops)
345{
346 struct script_spec *s = script_spec__find(spec);
347
348 if (s)
349 return s;
350
351 s = script_spec__new(spec, ops);
352 if (!s)
353 goto out_delete_spec;
354
355 script_spec__add(s);
356
357 return s;
358
359out_delete_spec:
360 script_spec__delete(s);
361
362 return NULL;
363}
364
365int script_spec_register(const char *spec, struct scripting_ops *ops)
366{
367 struct script_spec *s;
368
369 s = script_spec__find(spec);
370 if (s)
371 return -1;
372
373 s = script_spec__findnew(spec, ops);
374 if (!s)
375 return -1;
376
377 return 0;
378}
379
380static struct scripting_ops *script_spec__lookup(const char *spec)
381{
382 struct script_spec *s = script_spec__find(spec);
383 if (!s)
384 return NULL;
385
386 return s->ops;
387}
388
389static void list_available_languages(void)
390{
391 struct script_spec *s;
392
393 fprintf(stderr, "\n");
394 fprintf(stderr, "Scripting language extensions (used in "
395 "perf script -s [spec:]script.[spec]):\n\n");
396
397 list_for_each_entry(s, &script_specs, node)
398 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
399
400 fprintf(stderr, "\n");
401}
402
403static int parse_scriptname(const struct option *opt __used,
404 const char *str, int unset __used)
405{
406 char spec[PATH_MAX];
407 const char *script, *ext;
408 int len;
409
410 if (strcmp(str, "lang") == 0) {
411 list_available_languages();
412 exit(0);
413 }
414
415 script = strchr(str, ':');
416 if (script) {
417 len = script - str;
418 if (len >= PATH_MAX) {
419 fprintf(stderr, "invalid language specifier");
420 return -1;
421 }
422 strncpy(spec, str, len);
423 spec[len] = '\0';
424 scripting_ops = script_spec__lookup(spec);
425 if (!scripting_ops) {
426 fprintf(stderr, "invalid language specifier");
427 return -1;
428 }
429 script++;
430 } else {
431 script = str;
432 ext = strrchr(script, '.');
433 if (!ext) {
434 fprintf(stderr, "invalid script extension");
435 return -1;
436 }
437 scripting_ops = script_spec__lookup(++ext);
438 if (!scripting_ops) {
439 fprintf(stderr, "invalid script extension");
440 return -1;
441 }
442 }
443
444 script_name = strdup(script);
445
446 return 0;
447}
448
449static int parse_output_fields(const struct option *opt __used,
450 const char *arg, int unset __used)
451{
452 char *tok;
453 int i, imax = sizeof(all_output_options) / sizeof(struct output_option);
454 int rc = 0;
455 char *str = strdup(arg);
456 int type = -1;
457
458 if (!str)
459 return -ENOMEM;
460
461 tok = strtok(str, ":");
462 if (!tok) {
463 fprintf(stderr,
464 "Invalid field string - not prepended with type.");
465 return -EINVAL;
466 }
467
468
469
470
471 if (!strcmp(tok, "hw"))
472 type = PERF_TYPE_HARDWARE;
473 else if (!strcmp(tok, "sw"))
474 type = PERF_TYPE_SOFTWARE;
475 else if (!strcmp(tok, "trace"))
476 type = PERF_TYPE_TRACEPOINT;
477 else {
478 fprintf(stderr, "Invalid event type in field string.");
479 return -EINVAL;
480 }
481
482 output_fields[type] = 0;
483 while (1) {
484 tok = strtok(NULL, ",");
485 if (!tok)
486 break;
487 for (i = 0; i < imax; ++i) {
488 if (strcmp(tok, all_output_options[i].str) == 0) {
489 output_fields[type] |= all_output_options[i].field;
490 break;
491 }
492 }
493 if (i == imax) {
494 fprintf(stderr, "Invalid field requested.");
495 rc = -EINVAL;
496 break;
497 }
498 }
499
500 if (output_fields[type] == 0) {
501 pr_debug("No fields requested for %s type. "
502 "Events will not be displayed\n", event_type(type));
503 }
504
505 output_set_by_user = true;
506
507 free(str);
508 return rc;
509}
510
511
512static int is_directory(const char *base_path, const struct dirent *dent)
513{
514 char path[PATH_MAX];
515 struct stat st;
516
517 sprintf(path, "%s/%s", base_path, dent->d_name);
518 if (stat(path, &st))
519 return 0;
520
521 return S_ISDIR(st.st_mode);
522}
523
524#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
525 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
526 lang_next) \
527 if ((lang_dirent.d_type == DT_DIR || \
528 (lang_dirent.d_type == DT_UNKNOWN && \
529 is_directory(scripts_path, &lang_dirent))) && \
530 (strcmp(lang_dirent.d_name, ".")) && \
531 (strcmp(lang_dirent.d_name, "..")))
532
533#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
534 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
535 script_next) \
536 if (script_dirent.d_type != DT_DIR && \
537 (script_dirent.d_type != DT_UNKNOWN || \
538 !is_directory(lang_path, &script_dirent)))
539
540
541#define RECORD_SUFFIX "-record"
542#define REPORT_SUFFIX "-report"
543
544struct script_desc {
545 struct list_head node;
546 char *name;
547 char *half_liner;
548 char *args;
549};
550
551static LIST_HEAD(script_descs);
552
553static struct script_desc *script_desc__new(const char *name)
554{
555 struct script_desc *s = zalloc(sizeof(*s));
556
557 if (s != NULL && name)
558 s->name = strdup(name);
559
560 return s;
561}
562
563static void script_desc__delete(struct script_desc *s)
564{
565 free(s->name);
566 free(s->half_liner);
567 free(s->args);
568 free(s);
569}
570
571static void script_desc__add(struct script_desc *s)
572{
573 list_add_tail(&s->node, &script_descs);
574}
575
576static struct script_desc *script_desc__find(const char *name)
577{
578 struct script_desc *s;
579
580 list_for_each_entry(s, &script_descs, node)
581 if (strcasecmp(s->name, name) == 0)
582 return s;
583 return NULL;
584}
585
586static struct script_desc *script_desc__findnew(const char *name)
587{
588 struct script_desc *s = script_desc__find(name);
589
590 if (s)
591 return s;
592
593 s = script_desc__new(name);
594 if (!s)
595 goto out_delete_desc;
596
597 script_desc__add(s);
598
599 return s;
600
601out_delete_desc:
602 script_desc__delete(s);
603
604 return NULL;
605}
606
607static const char *ends_with(const char *str, const char *suffix)
608{
609 size_t suffix_len = strlen(suffix);
610 const char *p = str;
611
612 if (strlen(str) > suffix_len) {
613 p = str + strlen(str) - suffix_len;
614 if (!strncmp(p, suffix, suffix_len))
615 return p;
616 }
617
618 return NULL;
619}
620
621static char *ltrim(char *str)
622{
623 int len = strlen(str);
624
625 while (len && isspace(*str)) {
626 len--;
627 str++;
628 }
629
630 return str;
631}
632
633static int read_script_info(struct script_desc *desc, const char *filename)
634{
635 char line[BUFSIZ], *p;
636 FILE *fp;
637
638 fp = fopen(filename, "r");
639 if (!fp)
640 return -1;
641
642 while (fgets(line, sizeof(line), fp)) {
643 p = ltrim(line);
644 if (strlen(p) == 0)
645 continue;
646 if (*p != '#')
647 continue;
648 p++;
649 if (strlen(p) && *p == '!')
650 continue;
651
652 p = ltrim(p);
653 if (strlen(p) && p[strlen(p) - 1] == '\n')
654 p[strlen(p) - 1] = '\0';
655
656 if (!strncmp(p, "description:", strlen("description:"))) {
657 p += strlen("description:");
658 desc->half_liner = strdup(ltrim(p));
659 continue;
660 }
661
662 if (!strncmp(p, "args:", strlen("args:"))) {
663 p += strlen("args:");
664 desc->args = strdup(ltrim(p));
665 continue;
666 }
667 }
668
669 fclose(fp);
670
671 return 0;
672}
673
674static int list_available_scripts(const struct option *opt __used,
675 const char *s __used, int unset __used)
676{
677 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
678 char scripts_path[MAXPATHLEN];
679 DIR *scripts_dir, *lang_dir;
680 char script_path[MAXPATHLEN];
681 char lang_path[MAXPATHLEN];
682 struct script_desc *desc;
683 char first_half[BUFSIZ];
684 char *script_root;
685 char *str;
686
687 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
688
689 scripts_dir = opendir(scripts_path);
690 if (!scripts_dir)
691 return -1;
692
693 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
694 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
695 lang_dirent.d_name);
696 lang_dir = opendir(lang_path);
697 if (!lang_dir)
698 continue;
699
700 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
701 script_root = strdup(script_dirent.d_name);
702 str = (char *)ends_with(script_root, REPORT_SUFFIX);
703 if (str) {
704 *str = '\0';
705 desc = script_desc__findnew(script_root);
706 snprintf(script_path, MAXPATHLEN, "%s/%s",
707 lang_path, script_dirent.d_name);
708 read_script_info(desc, script_path);
709 }
710 free(script_root);
711 }
712 }
713
714 fprintf(stdout, "List of available trace scripts:\n");
715 list_for_each_entry(desc, &script_descs, node) {
716 sprintf(first_half, "%s %s", desc->name,
717 desc->args ? desc->args : "");
718 fprintf(stdout, " %-36s %s\n", first_half,
719 desc->half_liner ? desc->half_liner : "");
720 }
721
722 exit(0);
723}
724
725static char *get_script_path(const char *script_root, const char *suffix)
726{
727 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
728 char scripts_path[MAXPATHLEN];
729 char script_path[MAXPATHLEN];
730 DIR *scripts_dir, *lang_dir;
731 char lang_path[MAXPATHLEN];
732 char *str, *__script_root;
733 char *path = NULL;
734
735 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
736
737 scripts_dir = opendir(scripts_path);
738 if (!scripts_dir)
739 return NULL;
740
741 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
742 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
743 lang_dirent.d_name);
744 lang_dir = opendir(lang_path);
745 if (!lang_dir)
746 continue;
747
748 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
749 __script_root = strdup(script_dirent.d_name);
750 str = (char *)ends_with(__script_root, suffix);
751 if (str) {
752 *str = '\0';
753 if (strcmp(__script_root, script_root))
754 continue;
755 snprintf(script_path, MAXPATHLEN, "%s/%s",
756 lang_path, script_dirent.d_name);
757 path = strdup(script_path);
758 free(__script_root);
759 break;
760 }
761 free(__script_root);
762 }
763 }
764
765 return path;
766}
767
768static bool is_top_script(const char *script_path)
769{
770 return ends_with(script_path, "top") == NULL ? false : true;
771}
772
773static int has_required_arg(char *script_path)
774{
775 struct script_desc *desc;
776 int n_args = 0;
777 char *p;
778
779 desc = script_desc__new(NULL);
780
781 if (read_script_info(desc, script_path))
782 goto out;
783
784 if (!desc->args)
785 goto out;
786
787 for (p = desc->args; *p; p++)
788 if (*p == '<')
789 n_args++;
790out:
791 script_desc__delete(desc);
792
793 return n_args;
794}
795
796static const char * const script_usage[] = {
797 "perf script [<options>]",
798 "perf script [<options>] record <script> [<record-options>] <command>",
799 "perf script [<options>] report <script> [script-args]",
800 "perf script [<options>] <script> [<record-options>] <command>",
801 "perf script [<options>] <top-script> [script-args]",
802 NULL
803};
804
805static const struct option options[] = {
806 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
807 "dump raw trace in ASCII"),
808 OPT_INCR('v', "verbose", &verbose,
809 "be more verbose (show symbol address, etc)"),
810 OPT_BOOLEAN('L', "Latency", &latency_format,
811 "show latency attributes (irqs/preemption disabled, etc)"),
812 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
813 list_available_scripts),
814 OPT_CALLBACK('s', "script", NULL, "name",
815 "script file name (lang:script name, script name, or *)",
816 parse_scriptname),
817 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
818 "generate perf-script.xx script in specified language"),
819 OPT_STRING('i', "input", &input_name, "file",
820 "input file name"),
821 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
822 "do various checks like samples ordering and lost events"),
823 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
824 "file", "vmlinux pathname"),
825 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
826 "file", "kallsyms pathname"),
827 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
828 "When printing symbols do not display call chain"),
829 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
830 "Look for files with symbols relative to this directory"),
831 OPT_CALLBACK('f', "fields", NULL, "str",
832 "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace. Fields: comm,tid,pid,time,cpu,event,trace,sym",
833 parse_output_fields),
834
835 OPT_END()
836};
837
838static bool have_cmd(int argc, const char **argv)
839{
840 char **__argv = malloc(sizeof(const char *) * argc);
841
842 if (!__argv)
843 die("malloc");
844 memcpy(__argv, argv, sizeof(const char *) * argc);
845 argc = parse_options(argc, (const char **)__argv, record_options,
846 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
847 free(__argv);
848
849 return argc != 0;
850}
851
852int cmd_script(int argc, const char **argv, const char *prefix __used)
853{
854 char *rec_script_path = NULL;
855 char *rep_script_path = NULL;
856 struct perf_session *session;
857 char *script_path = NULL;
858 const char **__argv;
859 bool system_wide;
860 int i, j, err;
861
862 setup_scripting();
863
864 argc = parse_options(argc, argv, options, script_usage,
865 PARSE_OPT_STOP_AT_NON_OPTION);
866
867 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
868 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
869 if (!rec_script_path)
870 return cmd_record(argc, argv, NULL);
871 }
872
873 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
874 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
875 if (!rep_script_path) {
876 fprintf(stderr,
877 "Please specify a valid report script"
878 "(see 'perf script -l' for listing)\n");
879 return -1;
880 }
881 }
882
883
884 perf_set_argv_exec_path(perf_exec_path());
885
886 if (argc && !script_name && !rec_script_path && !rep_script_path) {
887 int live_pipe[2];
888 int rep_args;
889 pid_t pid;
890
891 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
892 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
893
894 if (!rec_script_path && !rep_script_path) {
895 fprintf(stderr, " Couldn't find script %s\n\n See perf"
896 " script -l for available scripts.\n", argv[0]);
897 usage_with_options(script_usage, options);
898 }
899
900 if (is_top_script(argv[0])) {
901 rep_args = argc - 1;
902 } else {
903 int rec_args;
904
905 rep_args = has_required_arg(rep_script_path);
906 rec_args = (argc - 1) - rep_args;
907 if (rec_args < 0) {
908 fprintf(stderr, " %s script requires options."
909 "\n\n See perf script -l for available "
910 "scripts and options.\n", argv[0]);
911 usage_with_options(script_usage, options);
912 }
913 }
914
915 if (pipe(live_pipe) < 0) {
916 perror("failed to create pipe");
917 exit(-1);
918 }
919
920 pid = fork();
921 if (pid < 0) {
922 perror("failed to fork");
923 exit(-1);
924 }
925
926 if (!pid) {
927 system_wide = true;
928 j = 0;
929
930 dup2(live_pipe[1], 1);
931 close(live_pipe[0]);
932
933 if (!is_top_script(argv[0]))
934 system_wide = !have_cmd(argc - rep_args,
935 &argv[rep_args]);
936
937 __argv = malloc((argc + 6) * sizeof(const char *));
938 if (!__argv)
939 die("malloc");
940
941 __argv[j++] = "/bin/sh";
942 __argv[j++] = rec_script_path;
943 if (system_wide)
944 __argv[j++] = "-a";
945 __argv[j++] = "-q";
946 __argv[j++] = "-o";
947 __argv[j++] = "-";
948 for (i = rep_args + 1; i < argc; i++)
949 __argv[j++] = argv[i];
950 __argv[j++] = NULL;
951
952 execvp("/bin/sh", (char **)__argv);
953 free(__argv);
954 exit(-1);
955 }
956
957 dup2(live_pipe[0], 0);
958 close(live_pipe[1]);
959
960 __argv = malloc((argc + 4) * sizeof(const char *));
961 if (!__argv)
962 die("malloc");
963 j = 0;
964 __argv[j++] = "/bin/sh";
965 __argv[j++] = rep_script_path;
966 for (i = 1; i < rep_args + 1; i++)
967 __argv[j++] = argv[i];
968 __argv[j++] = "-i";
969 __argv[j++] = "-";
970 __argv[j++] = NULL;
971
972 execvp("/bin/sh", (char **)__argv);
973 free(__argv);
974 exit(-1);
975 }
976
977 if (rec_script_path)
978 script_path = rec_script_path;
979 if (rep_script_path)
980 script_path = rep_script_path;
981
982 if (script_path) {
983 system_wide = false;
984 j = 0;
985
986 if (rec_script_path)
987 system_wide = !have_cmd(argc - 1, &argv[1]);
988
989 __argv = malloc((argc + 2) * sizeof(const char *));
990 if (!__argv)
991 die("malloc");
992 __argv[j++] = "/bin/sh";
993 __argv[j++] = script_path;
994 if (system_wide)
995 __argv[j++] = "-a";
996 for (i = 2; i < argc; i++)
997 __argv[j++] = argv[i];
998 __argv[j++] = NULL;
999
1000 execvp("/bin/sh", (char **)__argv);
1001 free(__argv);
1002 exit(-1);
1003 }
1004
1005 if (symbol__init() < 0)
1006 return -1;
1007 if (!script_name)
1008 setup_pager();
1009
1010 session = perf_session__new(input_name, O_RDONLY, 0, false, &event_ops);
1011 if (session == NULL)
1012 return -ENOMEM;
1013
1014 if (!no_callchain)
1015 symbol_conf.use_callchain = true;
1016 else
1017 symbol_conf.use_callchain = false;
1018
1019 if (generate_script_lang) {
1020 struct stat perf_stat;
1021 int input;
1022
1023 if (output_set_by_user) {
1024 fprintf(stderr,
1025 "custom fields not supported for generated scripts");
1026 return -1;
1027 }
1028
1029 input = open(input_name, O_RDONLY);
1030 if (input < 0) {
1031 perror("failed to open file");
1032 exit(-1);
1033 }
1034
1035 err = fstat(input, &perf_stat);
1036 if (err < 0) {
1037 perror("failed to stat file");
1038 exit(-1);
1039 }
1040
1041 if (!perf_stat.st_size) {
1042 fprintf(stderr, "zero-sized file, nothing to do!\n");
1043 exit(0);
1044 }
1045
1046 scripting_ops = script_spec__lookup(generate_script_lang);
1047 if (!scripting_ops) {
1048 fprintf(stderr, "invalid language specifier");
1049 return -1;
1050 }
1051
1052 err = scripting_ops->generate_script("perf-script");
1053 goto out;
1054 }
1055
1056 if (script_name) {
1057 err = scripting_ops->start_script(script_name, argc, argv);
1058 if (err)
1059 goto out;
1060 pr_debug("perf script started with script %s\n\n", script_name);
1061 }
1062
1063 err = __cmd_script(session);
1064
1065 perf_session__delete(session);
1066 cleanup_scripting();
1067out:
1068 return err;
1069}
1070
