projects / deliverable / linux.git / blob
? search:


93a34cef9676993b4f53ea16ab1aa6b34a37165d
[deliverable/linux.git] / tools / perf / builtin-script.c
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/tool.h"
11 #include "util/symbol.h"
12 #include "util/thread.h"
13 #include "util/trace-event.h"
14 #include "util/util.h"
15 #include "util/evlist.h"
16 #include "util/evsel.h"
17 #include "util/sort.h"
18 #include <linux/bitmap.h>
19
20 static char const *script_name;
21 static char const *generate_script_lang;
22 static bool debug_mode;
23 static u64 last_timestamp;
24 static u64 nr_unordered;
25 extern const struct option record_options[];
26 static bool no_callchain;
27 static bool latency_format;
28 static bool system_wide;
29 static const char *cpu_list;
30 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
31
32 enum perf_output_field {
33 PERF_OUTPUT_COMM = 1U << 0,
34 PERF_OUTPUT_TID = 1U << 1,
35 PERF_OUTPUT_PID = 1U << 2,
36 PERF_OUTPUT_TIME = 1U << 3,
37 PERF_OUTPUT_CPU = 1U << 4,
38 PERF_OUTPUT_EVNAME = 1U << 5,
39 PERF_OUTPUT_TRACE = 1U << 6,
40 PERF_OUTPUT_IP = 1U << 7,
41 PERF_OUTPUT_SYM = 1U << 8,
42 PERF_OUTPUT_DSO = 1U << 9,
43 PERF_OUTPUT_ADDR = 1U << 10,
44 PERF_OUTPUT_SYMOFFSET = 1U << 11,
45 };
46
47 struct output_option {
48 const char *str;
49 enum perf_output_field field;
50 } all_output_options[] = {
51 {.str = "comm", .field = PERF_OUTPUT_COMM},
52 {.str = "tid", .field = PERF_OUTPUT_TID},
53 {.str = "pid", .field = PERF_OUTPUT_PID},
54 {.str = "time", .field = PERF_OUTPUT_TIME},
55 {.str = "cpu", .field = PERF_OUTPUT_CPU},
56 {.str = "event", .field = PERF_OUTPUT_EVNAME},
57 {.str = "trace", .field = PERF_OUTPUT_TRACE},
58 {.str = "ip", .field = PERF_OUTPUT_IP},
59 {.str = "sym", .field = PERF_OUTPUT_SYM},
60 {.str = "dso", .field = PERF_OUTPUT_DSO},
61 {.str = "addr", .field = PERF_OUTPUT_ADDR},
62 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
63 };
64
65 /* default set to maintain compatibility with current format */
66 static struct {
67 bool user_set;
68 bool wildcard_set;
69 unsigned int print_ip_opts;
70 u64 fields;
71 u64 invalid_fields;
72 } output[PERF_TYPE_MAX] = {
73
74 [PERF_TYPE_HARDWARE] = {
75 .user_set = false,
76
77 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
78 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
79 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
80 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
81
82 .invalid_fields = PERF_OUTPUT_TRACE,
83 },
84
85 [PERF_TYPE_SOFTWARE] = {
86 .user_set = false,
87
88 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
89 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
90 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
91 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
92
93 .invalid_fields = PERF_OUTPUT_TRACE,
94 },
95
96 [PERF_TYPE_TRACEPOINT] = {
97 .user_set = false,
98
99 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
100 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
101 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
102 },
103
104 [PERF_TYPE_RAW] = {
105 .user_set = false,
106
107 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
108 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
109 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
110 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
111
112 .invalid_fields = PERF_OUTPUT_TRACE,
113 },
114 };
115
116 static bool output_set_by_user(void)
117 {
118 int j;
119 for (j = 0; j < PERF_TYPE_MAX; ++j) {
120 if (output[j].user_set)
121 return true;
122 }
123 return false;
124 }
125
126 static const char *output_field2str(enum perf_output_field field)
127 {
128 int i, imax = ARRAY_SIZE(all_output_options);
129 const char *str = "";
130
131 for (i = 0; i < imax; ++i) {
132 if (all_output_options[i].field == field) {
133 str = all_output_options[i].str;
134 break;
135 }
136 }
137 return str;
138 }
139
140 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
141
142 static int perf_evsel__check_stype(struct perf_evsel *evsel,
143 u64 sample_type, const char *sample_msg,
144 enum perf_output_field field)
145 {
146 struct perf_event_attr *attr = &evsel->attr;
147 int type = attr->type;
148 const char *evname;
149
150 if (attr->sample_type & sample_type)
151 return 0;
152
153 if (output[type].user_set) {
154 evname = perf_evsel__name(evsel);
155 pr_err("Samples for '%s' event do not have %s attribute set. "
156 "Cannot print '%s' field.\n",
157 evname, sample_msg, output_field2str(field));
158 return -1;
159 }
160
161 /* user did not ask for it explicitly so remove from the default list */
162 output[type].fields &= ~field;
163 evname = perf_evsel__name(evsel);
164 pr_debug("Samples for '%s' event do not have %s attribute set. "
165 "Skipping '%s' field.\n",
166 evname, sample_msg, output_field2str(field));
167
168 return 0;
169 }
170
171 static int perf_evsel__check_attr(struct perf_evsel *evsel,
172 struct perf_session *session)
173 {
174 struct perf_event_attr *attr = &evsel->attr;
175
176 if (PRINT_FIELD(TRACE) &&
177 !perf_session__has_traces(session, "record -R"))
178 return -EINVAL;
179
180 if (PRINT_FIELD(IP)) {
181 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
182 PERF_OUTPUT_IP))
183 return -EINVAL;
184
185 if (!no_callchain &&
186 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
187 symbol_conf.use_callchain = false;
188 }
189
190 if (PRINT_FIELD(ADDR) &&
191 perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
192 PERF_OUTPUT_ADDR))
193 return -EINVAL;
194
195 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
196 pr_err("Display of symbols requested but neither sample IP nor "
197 "sample address\nis selected. Hence, no addresses to convert "
198 "to symbols.\n");
199 return -EINVAL;
200 }
201 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
202 pr_err("Display of offsets requested but symbol is not"
203 "selected.\n");
204 return -EINVAL;
205 }
206 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
207 pr_err("Display of DSO requested but neither sample IP nor "
208 "sample address\nis selected. Hence, no addresses to convert "
209 "to DSO.\n");
210 return -EINVAL;
211 }
212
213 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
214 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
215 PERF_OUTPUT_TID|PERF_OUTPUT_PID))
216 return -EINVAL;
217
218 if (PRINT_FIELD(TIME) &&
219 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
220 PERF_OUTPUT_TIME))
221 return -EINVAL;
222
223 if (PRINT_FIELD(CPU) &&
224 perf_evsel__check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
225 PERF_OUTPUT_CPU))
226 return -EINVAL;
227
228 return 0;
229 }
230
231 /*
232 * verify all user requested events exist and the samples
233 * have the expected data
234 */
235 static int perf_session__check_output_opt(struct perf_session *session)
236 {
237 int j;
238 struct perf_evsel *evsel;
239 struct perf_event_attr *attr;
240
241 for (j = 0; j < PERF_TYPE_MAX; ++j) {
242 evsel = perf_session__find_first_evtype(session, j);
243
244 /*
245 * even if fields is set to 0 (ie., show nothing) event must
246 * exist if user explicitly includes it on the command line
247 */
248 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
249 pr_err("%s events do not exist. "
250 "Remove corresponding -f option to proceed.\n",
251 event_type(j));
252 return -1;
253 }
254
255 if (evsel && output[j].fields &&
256 perf_evsel__check_attr(evsel, session))
257 return -1;
258
259 if (evsel == NULL)
260 continue;
261
262 attr = &evsel->attr;
263
264 output[j].print_ip_opts = 0;
265 if (PRINT_FIELD(IP))
266 output[j].print_ip_opts |= PRINT_IP_OPT_IP;
267
268 if (PRINT_FIELD(SYM))
269 output[j].print_ip_opts |= PRINT_IP_OPT_SYM;
270
271 if (PRINT_FIELD(DSO))
272 output[j].print_ip_opts |= PRINT_IP_OPT_DSO;
273
274 if (PRINT_FIELD(SYMOFFSET))
275 output[j].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
276 }
277
278 return 0;
279 }
280
281 static void print_sample_start(struct perf_sample *sample,
282 struct thread *thread,
283 struct perf_evsel *evsel)
284 {
285 struct perf_event_attr *attr = &evsel->attr;
286 const char *evname = NULL;
287 unsigned long secs;
288 unsigned long usecs;
289 unsigned long long nsecs;
290
291 if (PRINT_FIELD(COMM)) {
292 if (latency_format)
293 printf("%8.8s ", thread->comm);
294 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
295 printf("%s ", thread->comm);
296 else
297 printf("%16s ", thread->comm);
298 }
299
300 if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
301 printf("%5d/%-5d ", sample->pid, sample->tid);
302 else if (PRINT_FIELD(PID))
303 printf("%5d ", sample->pid);
304 else if (PRINT_FIELD(TID))
305 printf("%5d ", sample->tid);
306
307 if (PRINT_FIELD(CPU)) {
308 if (latency_format)
309 printf("%3d ", sample->cpu);
310 else
311 printf("[%03d] ", sample->cpu);
312 }
313
314 if (PRINT_FIELD(TIME)) {
315 nsecs = sample->time;
316 secs = nsecs / NSECS_PER_SEC;
317 nsecs -= secs * NSECS_PER_SEC;
318 usecs = nsecs / NSECS_PER_USEC;
319 printf("%5lu.%06lu: ", secs, usecs);
320 }
321
322 if (PRINT_FIELD(EVNAME)) {
323 evname = perf_evsel__name(evsel);
324 printf("%s: ", evname ? evname : "[unknown]");
325 }
326 }
327
328 static bool is_bts_event(struct perf_event_attr *attr)
329 {
330 return ((attr->type == PERF_TYPE_HARDWARE) &&
331 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
332 (attr->sample_period == 1));
333 }
334
335 static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
336 {
337 if ((attr->type == PERF_TYPE_SOFTWARE) &&
338 ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
339 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
340 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
341 return true;
342
343 if (is_bts_event(attr))
344 return true;
345
346 return false;
347 }
348
349 static void print_sample_addr(union perf_event *event,
350 struct perf_sample *sample,
351 struct machine *machine,
352 struct thread *thread,
353 struct perf_event_attr *attr)
354 {
355 struct addr_location al;
356 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
357
358 printf("%16" PRIx64, sample->addr);
359
360 if (!sample_addr_correlates_sym(attr))
361 return;
362
363 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
364 sample->addr, &al);
365 if (!al.map)
366 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
367 sample->addr, &al);
368
369 al.cpu = sample->cpu;
370 al.sym = NULL;
371
372 if (al.map)
373 al.sym = map__find_symbol(al.map, al.addr, NULL);
374
375 if (PRINT_FIELD(SYM)) {
376 printf(" ");
377 if (PRINT_FIELD(SYMOFFSET))
378 symbol__fprintf_symname_offs(al.sym, &al, stdout);
379 else
380 symbol__fprintf_symname(al.sym, stdout);
381 }
382
383 if (PRINT_FIELD(DSO)) {
384 printf(" (");
385 map__fprintf_dsoname(al.map, stdout);
386 printf(")");
387 }
388 }
389
390 static void print_sample_bts(union perf_event *event,
391 struct perf_sample *sample,
392 struct perf_evsel *evsel,
393 struct machine *machine,
394 struct thread *thread)
395 {
396 struct perf_event_attr *attr = &evsel->attr;
397
398 /* print branch_from information */
399 if (PRINT_FIELD(IP)) {
400 if (!symbol_conf.use_callchain)
401 printf(" ");
402 else
403 printf("\n");
404 perf_evsel__print_ip(evsel, event, sample, machine,
405 output[attr->type].print_ip_opts,
406 PERF_MAX_STACK_DEPTH);
407 }
408
409 printf(" => ");
410
411 /* print branch_to information */
412 if (PRINT_FIELD(ADDR))
413 print_sample_addr(event, sample, machine, thread, attr);
414
415 printf("\n");
416 }
417
418 static void process_event(union perf_event *event, struct perf_sample *sample,
419 struct perf_evsel *evsel, struct machine *machine,
420 struct thread *thread,
421 struct addr_location *al __maybe_unused)
422 {
423 struct perf_event_attr *attr = &evsel->attr;
424
425 if (output[attr->type].fields == 0)
426 return;
427
428 print_sample_start(sample, thread, evsel);
429
430 if (is_bts_event(attr)) {
431 print_sample_bts(event, sample, evsel, machine, thread);
432 return;
433 }
434
435 if (PRINT_FIELD(TRACE))
436 event_format__print(evsel->tp_format, sample->cpu,
437 sample->raw_data, sample->raw_size);
438 if (PRINT_FIELD(ADDR))
439 print_sample_addr(event, sample, machine, thread, attr);
440
441 if (PRINT_FIELD(IP)) {
442 if (!symbol_conf.use_callchain)
443 printf(" ");
444 else
445 printf("\n");
446
447 perf_evsel__print_ip(evsel, event, sample, machine,
448 output[attr->type].print_ip_opts,
449 PERF_MAX_STACK_DEPTH);
450 }
451
452 printf("\n");
453 }
454
455 static int default_start_script(const char *script __maybe_unused,
456 int argc __maybe_unused,
457 const char **argv __maybe_unused)
458 {
459 return 0;
460 }
461
462 static int default_stop_script(void)
463 {
464 return 0;
465 }
466
467 static int default_generate_script(struct pevent *pevent __maybe_unused,
468 const char *outfile __maybe_unused)
469 {
470 return 0;
471 }
472
473 static struct scripting_ops default_scripting_ops = {
474 .start_script = default_start_script,
475 .stop_script = default_stop_script,
476 .process_event = process_event,
477 .generate_script = default_generate_script,
478 };
479
480 static struct scripting_ops *scripting_ops;
481
482 static void setup_scripting(void)
483 {
484 setup_perl_scripting();
485 setup_python_scripting();
486
487 scripting_ops = &default_scripting_ops;
488 }
489
490 static int cleanup_scripting(void)
491 {
492 pr_debug("\nperf script stopped\n");
493
494 return scripting_ops->stop_script();
495 }
496
497 static int process_sample_event(struct perf_tool *tool __maybe_unused,
498 union perf_event *event,
499 struct perf_sample *sample,
500 struct perf_evsel *evsel,
501 struct machine *machine)
502 {
503 struct addr_location al;
504 struct thread *thread = machine__findnew_thread(machine, sample->pid,
505 sample->tid);
506
507 if (thread == NULL) {
508 pr_debug("problem processing %d event, skipping it.\n",
509 event->header.type);
510 return -1;
511 }
512
513 if (debug_mode) {
514 if (sample->time < last_timestamp) {
515 pr_err("Samples misordered, previous: %" PRIu64
516 " this: %" PRIu64 "\n", last_timestamp,
517 sample->time);
518 nr_unordered++;
519 }
520 last_timestamp = sample->time;
521 return 0;
522 }
523
524 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
525 pr_err("problem processing %d event, skipping it.\n",
526 event->header.type);
527 return -1;
528 }
529
530 if (al.filtered)
531 return 0;
532
533 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
534 return 0;
535
536 scripting_ops->process_event(event, sample, evsel, machine, thread, &al);
537
538 evsel->hists.stats.total_period += sample->period;
539 return 0;
540 }
541
542 static struct perf_tool perf_script = {
543 .sample = process_sample_event,
544 .mmap = perf_event__process_mmap,
545 .comm = perf_event__process_comm,
546 .exit = perf_event__process_exit,
547 .fork = perf_event__process_fork,
548 .attr = perf_event__process_attr,
549 .tracing_data = perf_event__process_tracing_data,
550 .build_id = perf_event__process_build_id,
551 .ordered_samples = true,
552 .ordering_requires_timestamps = true,
553 };
554
555 extern volatile int session_done;
556
557 static void sig_handler(int sig __maybe_unused)
558 {
559 session_done = 1;
560 }
561
562 static int __cmd_script(struct perf_session *session)
563 {
564 int ret;
565
566 signal(SIGINT, sig_handler);
567
568 ret = perf_session__process_events(session, &perf_script);
569
570 if (debug_mode)
571 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
572
573 return ret;
574 }
575
576 struct script_spec {
577 struct list_head node;
578 struct scripting_ops *ops;
579 char spec[0];
580 };
581
582 static LIST_HEAD(script_specs);
583
584 static struct script_spec *script_spec__new(const char *spec,
585 struct scripting_ops *ops)
586 {
587 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
588
589 if (s != NULL) {
590 strcpy(s->spec, spec);
591 s->ops = ops;
592 }
593
594 return s;
595 }
596
597 static void script_spec__add(struct script_spec *s)
598 {
599 list_add_tail(&s->node, &script_specs);
600 }
601
602 static struct script_spec *script_spec__find(const char *spec)
603 {
604 struct script_spec *s;
605
606 list_for_each_entry(s, &script_specs, node)
607 if (strcasecmp(s->spec, spec) == 0)
608 return s;
609 return NULL;
610 }
611
612 static struct script_spec *script_spec__findnew(const char *spec,
613 struct scripting_ops *ops)
614 {
615 struct script_spec *s = script_spec__find(spec);
616
617 if (s)
618 return s;
619
620 s = script_spec__new(spec, ops);
621 if (!s)
622 return NULL;
623
624 script_spec__add(s);
625
626 return s;
627 }
628
629 int script_spec_register(const char *spec, struct scripting_ops *ops)
630 {
631 struct script_spec *s;
632
633 s = script_spec__find(spec);
634 if (s)
635 return -1;
636
637 s = script_spec__findnew(spec, ops);
638 if (!s)
639 return -1;
640
641 return 0;
642 }
643
644 static struct scripting_ops *script_spec__lookup(const char *spec)
645 {
646 struct script_spec *s = script_spec__find(spec);
647 if (!s)
648 return NULL;
649
650 return s->ops;
651 }
652
653 static void list_available_languages(void)
654 {
655 struct script_spec *s;
656
657 fprintf(stderr, "\n");
658 fprintf(stderr, "Scripting language extensions (used in "
659 "perf script -s [spec:]script.[spec]):\n\n");
660
661 list_for_each_entry(s, &script_specs, node)
662 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
663
664 fprintf(stderr, "\n");
665 }
666
667 static int parse_scriptname(const struct option *opt __maybe_unused,
668 const char *str, int unset __maybe_unused)
669 {
670 char spec[PATH_MAX];
671 const char *script, *ext;
672 int len;
673
674 if (strcmp(str, "lang") == 0) {
675 list_available_languages();
676 exit(0);
677 }
678
679 script = strchr(str, ':');
680 if (script) {
681 len = script - str;
682 if (len >= PATH_MAX) {
683 fprintf(stderr, "invalid language specifier");
684 return -1;
685 }
686 strncpy(spec, str, len);
687 spec[len] = '\0';
688 scripting_ops = script_spec__lookup(spec);
689 if (!scripting_ops) {
690 fprintf(stderr, "invalid language specifier");
691 return -1;
692 }
693 script++;
694 } else {
695 script = str;
696 ext = strrchr(script, '.');
697 if (!ext) {
698 fprintf(stderr, "invalid script extension");
699 return -1;
700 }
701 scripting_ops = script_spec__lookup(++ext);
702 if (!scripting_ops) {
703 fprintf(stderr, "invalid script extension");
704 return -1;
705 }
706 }
707
708 script_name = strdup(script);
709
710 return 0;
711 }
712
713 static int parse_output_fields(const struct option *opt __maybe_unused,
714 const char *arg, int unset __maybe_unused)
715 {
716 char *tok;
717 int i, imax = ARRAY_SIZE(all_output_options);
718 int j;
719 int rc = 0;
720 char *str = strdup(arg);
721 int type = -1;
722
723 if (!str)
724 return -ENOMEM;
725
726 /* first word can state for which event type the user is specifying
727 * the fields. If no type exists, the specified fields apply to all
728 * event types found in the file minus the invalid fields for a type.
729 */
730 tok = strchr(str, ':');
731 if (tok) {
732 *tok = '\0';
733 tok++;
734 if (!strcmp(str, "hw"))
735 type = PERF_TYPE_HARDWARE;
736 else if (!strcmp(str, "sw"))
737 type = PERF_TYPE_SOFTWARE;
738 else if (!strcmp(str, "trace"))
739 type = PERF_TYPE_TRACEPOINT;
740 else if (!strcmp(str, "raw"))
741 type = PERF_TYPE_RAW;
742 else {
743 fprintf(stderr, "Invalid event type in field string.\n");
744 rc = -EINVAL;
745 goto out;
746 }
747
748 if (output[type].user_set)
749 pr_warning("Overriding previous field request for %s events.\n",
750 event_type(type));
751
752 output[type].fields = 0;
753 output[type].user_set = true;
754 output[type].wildcard_set = false;
755
756 } else {
757 tok = str;
758 if (strlen(str) == 0) {
759 fprintf(stderr,
760 "Cannot set fields to 'none' for all event types.\n");
761 rc = -EINVAL;
762 goto out;
763 }
764
765 if (output_set_by_user())
766 pr_warning("Overriding previous field request for all events.\n");
767
768 for (j = 0; j < PERF_TYPE_MAX; ++j) {
769 output[j].fields = 0;
770 output[j].user_set = true;
771 output[j].wildcard_set = true;
772 }
773 }
774
775 tok = strtok(tok, ",");
776 while (tok) {
777 for (i = 0; i < imax; ++i) {
778 if (strcmp(tok, all_output_options[i].str) == 0)
779 break;
780 }
781 if (i == imax) {
782 fprintf(stderr, "Invalid field requested.\n");
783 rc = -EINVAL;
784 goto out;
785 }
786
787 if (type == -1) {
788 /* add user option to all events types for
789 * which it is valid
790 */
791 for (j = 0; j < PERF_TYPE_MAX; ++j) {
792 if (output[j].invalid_fields & all_output_options[i].field) {
793 pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
794 all_output_options[i].str, event_type(j));
795 } else
796 output[j].fields |= all_output_options[i].field;
797 }
798 } else {
799 if (output[type].invalid_fields & all_output_options[i].field) {
800 fprintf(stderr, "\'%s\' not valid for %s events.\n",
801 all_output_options[i].str, event_type(type));
802
803 rc = -EINVAL;
804 goto out;
805 }
806 output[type].fields |= all_output_options[i].field;
807 }
808
809 tok = strtok(NULL, ",");
810 }
811
812 if (type >= 0) {
813 if (output[type].fields == 0) {
814 pr_debug("No fields requested for %s type. "
815 "Events will not be displayed.\n", event_type(type));
816 }
817 }
818
819 out:
820 free(str);
821 return rc;
822 }
823
824 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
825 static int is_directory(const char *base_path, const struct dirent *dent)
826 {
827 char path[PATH_MAX];
828 struct stat st;
829
830 sprintf(path, "%s/%s", base_path, dent->d_name);
831 if (stat(path, &st))
832 return 0;
833
834 return S_ISDIR(st.st_mode);
835 }
836
837 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
838 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
839 lang_next) \
840 if ((lang_dirent.d_type == DT_DIR || \
841 (lang_dirent.d_type == DT_UNKNOWN && \
842 is_directory(scripts_path, &lang_dirent))) && \
843 (strcmp(lang_dirent.d_name, ".")) && \
844 (strcmp(lang_dirent.d_name, "..")))
845
846 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
847 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
848 script_next) \
849 if (script_dirent.d_type != DT_DIR && \
850 (script_dirent.d_type != DT_UNKNOWN || \
851 !is_directory(lang_path, &script_dirent)))
852
853
854 #define RECORD_SUFFIX "-record"
855 #define REPORT_SUFFIX "-report"
856
857 struct script_desc {
858 struct list_head node;
859 char *name;
860 char *half_liner;
861 char *args;
862 };
863
864 static LIST_HEAD(script_descs);
865
866 static struct script_desc *script_desc__new(const char *name)
867 {
868 struct script_desc *s = zalloc(sizeof(*s));
869
870 if (s != NULL && name)
871 s->name = strdup(name);
872
873 return s;
874 }
875
876 static void script_desc__delete(struct script_desc *s)
877 {
878 free(s->name);
879 free(s->half_liner);
880 free(s->args);
881 free(s);
882 }
883
884 static void script_desc__add(struct script_desc *s)
885 {
886 list_add_tail(&s->node, &script_descs);
887 }
888
889 static struct script_desc *script_desc__find(const char *name)
890 {
891 struct script_desc *s;
892
893 list_for_each_entry(s, &script_descs, node)
894 if (strcasecmp(s->name, name) == 0)
895 return s;
896 return NULL;
897 }
898
899 static struct script_desc *script_desc__findnew(const char *name)
900 {
901 struct script_desc *s = script_desc__find(name);
902
903 if (s)
904 return s;
905
906 s = script_desc__new(name);
907 if (!s)
908 goto out_delete_desc;
909
910 script_desc__add(s);
911
912 return s;
913
914 out_delete_desc:
915 script_desc__delete(s);
916
917 return NULL;
918 }
919
920 static const char *ends_with(const char *str, const char *suffix)
921 {
922 size_t suffix_len = strlen(suffix);
923 const char *p = str;
924
925 if (strlen(str) > suffix_len) {
926 p = str + strlen(str) - suffix_len;
927 if (!strncmp(p, suffix, suffix_len))
928 return p;
929 }
930
931 return NULL;
932 }
933
934 static int read_script_info(struct script_desc *desc, const char *filename)
935 {
936 char line[BUFSIZ], *p;
937 FILE *fp;
938
939 fp = fopen(filename, "r");
940 if (!fp)
941 return -1;
942
943 while (fgets(line, sizeof(line), fp)) {
944 p = ltrim(line);
945 if (strlen(p) == 0)
946 continue;
947 if (*p != '#')
948 continue;
949 p++;
950 if (strlen(p) && *p == '!')
951 continue;
952
953 p = ltrim(p);
954 if (strlen(p) && p[strlen(p) - 1] == '\n')
955 p[strlen(p) - 1] = '\0';
956
957 if (!strncmp(p, "description:", strlen("description:"))) {
958 p += strlen("description:");
959 desc->half_liner = strdup(ltrim(p));
960 continue;
961 }
962
963 if (!strncmp(p, "args:", strlen("args:"))) {
964 p += strlen("args:");
965 desc->args = strdup(ltrim(p));
966 continue;
967 }
968 }
969
970 fclose(fp);
971
972 return 0;
973 }
974
975 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
976 {
977 char *script_root, *str;
978
979 script_root = strdup(script_dirent->d_name);
980 if (!script_root)
981 return NULL;
982
983 str = (char *)ends_with(script_root, suffix);
984 if (!str) {
985 free(script_root);
986 return NULL;
987 }
988
989 *str = '\0';
990 return script_root;
991 }
992
993 static int list_available_scripts(const struct option *opt __maybe_unused,
994 const char *s __maybe_unused,
995 int unset __maybe_unused)
996 {
997 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
998 char scripts_path[MAXPATHLEN];
999 DIR *scripts_dir, *lang_dir;
1000 char script_path[MAXPATHLEN];
1001 char lang_path[MAXPATHLEN];
1002 struct script_desc *desc;
1003 char first_half[BUFSIZ];
1004 char *script_root;
1005
1006 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1007
1008 scripts_dir = opendir(scripts_path);
1009 if (!scripts_dir)
1010 return -1;
1011
1012 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1013 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1014 lang_dirent.d_name);
1015 lang_dir = opendir(lang_path);
1016 if (!lang_dir)
1017 continue;
1018
1019 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1020 script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
1021 if (script_root) {
1022 desc = script_desc__findnew(script_root);
1023 snprintf(script_path, MAXPATHLEN, "%s/%s",
1024 lang_path, script_dirent.d_name);
1025 read_script_info(desc, script_path);
1026 free(script_root);
1027 }
1028 }
1029 }
1030
1031 fprintf(stdout, "List of available trace scripts:\n");
1032 list_for_each_entry(desc, &script_descs, node) {
1033 sprintf(first_half, "%s %s", desc->name,
1034 desc->args ? desc->args : "");
1035 fprintf(stdout, " %-36s %s\n", first_half,
1036 desc->half_liner ? desc->half_liner : "");
1037 }
1038
1039 exit(0);
1040 }
1041
1042 /*
1043 * Some scripts specify the required events in their "xxx-record" file,
1044 * this function will check if the events in perf.data match those
1045 * mentioned in the "xxx-record".
1046 *
1047 * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1048 * which is covered well now. And new parsing code should be added to
1049 * cover the future complexing formats like event groups etc.
1050 */
1051 static int check_ev_match(char *dir_name, char *scriptname,
1052 struct perf_session *session)
1053 {
1054 char filename[MAXPATHLEN], evname[128];
1055 char line[BUFSIZ], *p;
1056 struct perf_evsel *pos;
1057 int match, len;
1058 FILE *fp;
1059
1060 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1061
1062 fp = fopen(filename, "r");
1063 if (!fp)
1064 return -1;
1065
1066 while (fgets(line, sizeof(line), fp)) {
1067 p = ltrim(line);
1068 if (*p == '#')
1069 continue;
1070
1071 while (strlen(p)) {
1072 p = strstr(p, "-e");
1073 if (!p)
1074 break;
1075
1076 p += 2;
1077 p = ltrim(p);
1078 len = strcspn(p, " \t");
1079 if (!len)
1080 break;
1081
1082 snprintf(evname, len + 1, "%s", p);
1083
1084 match = 0;
1085 list_for_each_entry(pos,
1086 &session->evlist->entries, node) {
1087 if (!strcmp(perf_evsel__name(pos), evname)) {
1088 match = 1;
1089 break;
1090 }
1091 }
1092
1093 if (!match) {
1094 fclose(fp);
1095 return -1;
1096 }
1097 }
1098 }
1099
1100 fclose(fp);
1101 return 0;
1102 }
1103
1104 /*
1105 * Return -1 if none is found, otherwise the actual scripts number.
1106 *
1107 * Currently the only user of this function is the script browser, which
1108 * will list all statically runnable scripts, select one, execute it and
1109 * show the output in a perf browser.
1110 */
1111 int find_scripts(char **scripts_array, char **scripts_path_array)
1112 {
1113 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1114 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1115 DIR *scripts_dir, *lang_dir;
1116 struct perf_session *session;
1117 char *temp;
1118 int i = 0;
1119
1120 session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
1121 if (!session)
1122 return -1;
1123
1124 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1125
1126 scripts_dir = opendir(scripts_path);
1127 if (!scripts_dir) {
1128 perf_session__delete(session);
1129 return -1;
1130 }
1131
1132 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1133 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1134 lang_dirent.d_name);
1135 #ifdef NO_LIBPERL
1136 if (strstr(lang_path, "perl"))
1137 continue;
1138 #endif
1139 #ifdef NO_LIBPYTHON
1140 if (strstr(lang_path, "python"))
1141 continue;
1142 #endif
1143
1144 lang_dir = opendir(lang_path);
1145 if (!lang_dir)
1146 continue;
1147
1148 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1149 /* Skip those real time scripts: xxxtop.p[yl] */
1150 if (strstr(script_dirent.d_name, "top."))
1151 continue;
1152 sprintf(scripts_path_array[i], "%s/%s", lang_path,
1153 script_dirent.d_name);
1154 temp = strchr(script_dirent.d_name, '.');
1155 snprintf(scripts_array[i],
1156 (temp - script_dirent.d_name) + 1,
1157 "%s", script_dirent.d_name);
1158
1159 if (check_ev_match(lang_path,
1160 scripts_array[i], session))
1161 continue;
1162
1163 i++;
1164 }
1165 closedir(lang_dir);
1166 }
1167
1168 closedir(scripts_dir);
1169 perf_session__delete(session);
1170 return i;
1171 }
1172
1173 static char *get_script_path(const char *script_root, const char *suffix)
1174 {
1175 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1176 char scripts_path[MAXPATHLEN];
1177 char script_path[MAXPATHLEN];
1178 DIR *scripts_dir, *lang_dir;
1179 char lang_path[MAXPATHLEN];
1180 char *__script_root;
1181
1182 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1183
1184 scripts_dir = opendir(scripts_path);
1185 if (!scripts_dir)
1186 return NULL;
1187
1188 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1189 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1190 lang_dirent.d_name);
1191 lang_dir = opendir(lang_path);
1192 if (!lang_dir)
1193 continue;
1194
1195 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1196 __script_root = get_script_root(&script_dirent, suffix);
1197 if (__script_root && !strcmp(script_root, __script_root)) {
1198 free(__script_root);
1199 closedir(lang_dir);
1200 closedir(scripts_dir);
1201 snprintf(script_path, MAXPATHLEN, "%s/%s",
1202 lang_path, script_dirent.d_name);
1203 return strdup(script_path);
1204 }
1205 free(__script_root);
1206 }
1207 closedir(lang_dir);
1208 }
1209 closedir(scripts_dir);
1210
1211 return NULL;
1212 }
1213
1214 static bool is_top_script(const char *script_path)
1215 {
1216 return ends_with(script_path, "top") == NULL ? false : true;
1217 }
1218
1219 static int has_required_arg(char *script_path)
1220 {
1221 struct script_desc *desc;
1222 int n_args = 0;
1223 char *p;
1224
1225 desc = script_desc__new(NULL);
1226
1227 if (read_script_info(desc, script_path))
1228 goto out;
1229
1230 if (!desc->args)
1231 goto out;
1232
1233 for (p = desc->args; *p; p++)
1234 if (*p == '<')
1235 n_args++;
1236 out:
1237 script_desc__delete(desc);
1238
1239 return n_args;
1240 }
1241
1242 static int have_cmd(int argc, const char **argv)
1243 {
1244 char **__argv = malloc(sizeof(const char *) * argc);
1245
1246 if (!__argv) {
1247 pr_err("malloc failed\n");
1248 return -1;
1249 }
1250
1251 memcpy(__argv, argv, sizeof(const char *) * argc);
1252 argc = parse_options(argc, (const char **)__argv, record_options,
1253 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1254 free(__argv);
1255
1256 system_wide = (argc == 0);
1257
1258 return 0;
1259 }
1260
1261 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1262 {
1263 bool show_full_info = false;
1264 char *rec_script_path = NULL;
1265 char *rep_script_path = NULL;
1266 struct perf_session *session;
1267 char *script_path = NULL;
1268 const char **__argv;
1269 int i, j, err;
1270 const struct option options[] = {
1271 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1272 "dump raw trace in ASCII"),
1273 OPT_INCR('v', "verbose", &verbose,
1274 "be more verbose (show symbol address, etc)"),
1275 OPT_BOOLEAN('L', "Latency", &latency_format,
1276 "show latency attributes (irqs/preemption disabled, etc)"),
1277 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1278 list_available_scripts),
1279 OPT_CALLBACK('s', "script", NULL, "name",
1280 "script file name (lang:script name, script name, or *)",
1281 parse_scriptname),
1282 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1283 "generate perf-script.xx script in specified language"),
1284 OPT_STRING('i', "input", &input_name, "file", "input file name"),
1285 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1286 "do various checks like samples ordering and lost events"),
1287 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1288 "file", "vmlinux pathname"),
1289 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1290 "file", "kallsyms pathname"),
1291 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1292 "When printing symbols do not display call chain"),
1293 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1294 "Look for files with symbols relative to this directory"),
1295 OPT_CALLBACK('f', "fields", NULL, "str",
1296 "comma separated output fields prepend with 'type:'. "
1297 "Valid types: hw,sw,trace,raw. "
1298 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1299 "addr,symoff", parse_output_fields),
1300 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1301 "system-wide collection from all CPUs"),
1302 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1303 "only consider these symbols"),
1304 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1305 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1306 "only display events for these comms"),
1307 OPT_BOOLEAN('I', "show-info", &show_full_info,
1308 "display extended information from perf.data file"),
1309 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
1310 "Show the path of [kernel.kallsyms]"),
1311 OPT_END()
1312 };
1313 const char * const script_usage[] = {
1314 "perf script [<options>]",
1315 "perf script [<options>] record <script> [<record-options>] <command>",
1316 "perf script [<options>] report <script> [script-args]",
1317 "perf script [<options>] <script> [<record-options>] <command>",
1318 "perf script [<options>] <top-script> [script-args]",
1319 NULL
1320 };
1321
1322 setup_scripting();
1323
1324 argc = parse_options(argc, argv, options, script_usage,
1325 PARSE_OPT_STOP_AT_NON_OPTION);
1326
1327 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1328 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1329 if (!rec_script_path)
1330 return cmd_record(argc, argv, NULL);
1331 }
1332
1333 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1334 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1335 if (!rep_script_path) {
1336 fprintf(stderr,
1337 "Please specify a valid report script"
1338 "(see 'perf script -l' for listing)\n");
1339 return -1;
1340 }
1341 }
1342
1343 /* make sure PERF_EXEC_PATH is set for scripts */
1344 perf_set_argv_exec_path(perf_exec_path());
1345
1346 if (argc && !script_name && !rec_script_path && !rep_script_path) {
1347 int live_pipe[2];
1348 int rep_args;
1349 pid_t pid;
1350
1351 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1352 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1353
1354 if (!rec_script_path && !rep_script_path) {
1355 fprintf(stderr, " Couldn't find script %s\n\n See perf"
1356 " script -l for available scripts.\n", argv[0]);
1357 usage_with_options(script_usage, options);
1358 }
1359
1360 if (is_top_script(argv[0])) {
1361 rep_args = argc - 1;
1362 } else {
1363 int rec_args;
1364
1365 rep_args = has_required_arg(rep_script_path);
1366 rec_args = (argc - 1) - rep_args;
1367 if (rec_args < 0) {
1368 fprintf(stderr, " %s script requires options."
1369 "\n\n See perf script -l for available "
1370 "scripts and options.\n", argv[0]);
1371 usage_with_options(script_usage, options);
1372 }
1373 }
1374
1375 if (pipe(live_pipe) < 0) {
1376 perror("failed to create pipe");
1377 return -1;
1378 }
1379
1380 pid = fork();
1381 if (pid < 0) {
1382 perror("failed to fork");
1383 return -1;
1384 }
1385
1386 if (!pid) {
1387 j = 0;
1388
1389 dup2(live_pipe[1], 1);
1390 close(live_pipe[0]);
1391
1392 if (is_top_script(argv[0])) {
1393 system_wide = true;
1394 } else if (!system_wide) {
1395 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
1396 err = -1;
1397 goto out;
1398 }
1399 }
1400
1401 __argv = malloc((argc + 6) * sizeof(const char *));
1402 if (!__argv) {
1403 pr_err("malloc failed\n");
1404 err = -ENOMEM;
1405 goto out;
1406 }
1407
1408 __argv[j++] = "/bin/sh";
1409 __argv[j++] = rec_script_path;
1410 if (system_wide)
1411 __argv[j++] = "-a";
1412 __argv[j++] = "-q";
1413 __argv[j++] = "-o";
1414 __argv[j++] = "-";
1415 for (i = rep_args + 1; i < argc; i++)
1416 __argv[j++] = argv[i];
1417 __argv[j++] = NULL;
1418
1419 execvp("/bin/sh", (char **)__argv);
1420 free(__argv);
1421 exit(-1);
1422 }
1423
1424 dup2(live_pipe[0], 0);
1425 close(live_pipe[1]);
1426
1427 __argv = malloc((argc + 4) * sizeof(const char *));
1428 if (!__argv) {
1429 pr_err("malloc failed\n");
1430 err = -ENOMEM;
1431 goto out;
1432 }
1433
1434 j = 0;
1435 __argv[j++] = "/bin/sh";
1436 __argv[j++] = rep_script_path;
1437 for (i = 1; i < rep_args + 1; i++)
1438 __argv[j++] = argv[i];
1439 __argv[j++] = "-i";
1440 __argv[j++] = "-";
1441 __argv[j++] = NULL;
1442
1443 execvp("/bin/sh", (char **)__argv);
1444 free(__argv);
1445 exit(-1);
1446 }
1447
1448 if (rec_script_path)
1449 script_path = rec_script_path;
1450 if (rep_script_path)
1451 script_path = rep_script_path;
1452
1453 if (script_path) {
1454 j = 0;
1455
1456 if (!rec_script_path)
1457 system_wide = false;
1458 else if (!system_wide) {
1459 if (have_cmd(argc - 1, &argv[1]) != 0) {
1460 err = -1;
1461 goto out;
1462 }
1463 }
1464
1465 __argv = malloc((argc + 2) * sizeof(const char *));
1466 if (!__argv) {
1467 pr_err("malloc failed\n");
1468 err = -ENOMEM;
1469 goto out;
1470 }
1471
1472 __argv[j++] = "/bin/sh";
1473 __argv[j++] = script_path;
1474 if (system_wide)
1475 __argv[j++] = "-a";
1476 for (i = 2; i < argc; i++)
1477 __argv[j++] = argv[i];
1478 __argv[j++] = NULL;
1479
1480 execvp("/bin/sh", (char **)__argv);
1481 free(__argv);
1482 exit(-1);
1483 }
1484
1485 if (symbol__init() < 0)
1486 return -1;
1487 if (!script_name)
1488 setup_pager();
1489
1490 session = perf_session__new(input_name, O_RDONLY, 0, false,
1491 &perf_script);
1492 if (session == NULL)
1493 return -ENOMEM;
1494
1495 if (cpu_list) {
1496 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
1497 return -1;
1498 }
1499
1500 if (!script_name && !generate_script_lang)
1501 perf_session__fprintf_info(session, stdout, show_full_info);
1502
1503 if (!no_callchain)
1504 symbol_conf.use_callchain = true;
1505 else
1506 symbol_conf.use_callchain = false;
1507
1508 if (generate_script_lang) {
1509 struct stat perf_stat;
1510 int input;
1511
1512 if (output_set_by_user()) {
1513 fprintf(stderr,
1514 "custom fields not supported for generated scripts");
1515 return -1;
1516 }
1517
1518 input = open(session->filename, O_RDONLY); /* input_name */
1519 if (input < 0) {
1520 perror("failed to open file");
1521 return -1;
1522 }
1523
1524 err = fstat(input, &perf_stat);
1525 if (err < 0) {
1526 perror("failed to stat file");
1527 return -1;
1528 }
1529
1530 if (!perf_stat.st_size) {
1531 fprintf(stderr, "zero-sized file, nothing to do!\n");
1532 return 0;
1533 }
1534
1535 scripting_ops = script_spec__lookup(generate_script_lang);
1536 if (!scripting_ops) {
1537 fprintf(stderr, "invalid language specifier");
1538 return -1;
1539 }
1540
1541 err = scripting_ops->generate_script(session->pevent,
1542 "perf-script");
1543 goto out;
1544 }
1545
1546 if (script_name) {
1547 err = scripting_ops->start_script(script_name, argc, argv);
1548 if (err)
1549 goto out;
1550 pr_debug("perf script started with script %s\n\n", script_name);
1551 }
1552
1553
1554 err = perf_session__check_output_opt(session);
1555 if (err < 0)
1556 goto out;
1557
1558 err = __cmd_script(session);
1559
1560 perf_session__delete(session);
1561 cleanup_scripting();
1562 out:
1563 return err;
1564 }
Linux kernel - Deliverables
This page took 0.061518 seconds and 4 git commands to generate.