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Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
[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 .mmap2 = perf_event__process_mmap2,
546 .comm = perf_event__process_comm,
547 .exit = perf_event__process_exit,
548 .fork = perf_event__process_fork,
549 .attr = perf_event__process_attr,
550 .tracing_data = perf_event__process_tracing_data,
551 .build_id = perf_event__process_build_id,
552 .ordered_samples = true,
553 .ordering_requires_timestamps = true,
554 };
555
556 extern volatile int session_done;
557
558 static void sig_handler(int sig __maybe_unused)
559 {
560 session_done = 1;
561 }
562
563 static int __cmd_script(struct perf_session *session)
564 {
565 int ret;
566
567 signal(SIGINT, sig_handler);
568
569 ret = perf_session__process_events(session, &perf_script);
570
571 if (debug_mode)
572 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
573
574 return ret;
575 }
576
577 struct script_spec {
578 struct list_head node;
579 struct scripting_ops *ops;
580 char spec[0];
581 };
582
583 static LIST_HEAD(script_specs);
584
585 static struct script_spec *script_spec__new(const char *spec,
586 struct scripting_ops *ops)
587 {
588 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
589
590 if (s != NULL) {
591 strcpy(s->spec, spec);
592 s->ops = ops;
593 }
594
595 return s;
596 }
597
598 static void script_spec__add(struct script_spec *s)
599 {
600 list_add_tail(&s->node, &script_specs);
601 }
602
603 static struct script_spec *script_spec__find(const char *spec)
604 {
605 struct script_spec *s;
606
607 list_for_each_entry(s, &script_specs, node)
608 if (strcasecmp(s->spec, spec) == 0)
609 return s;
610 return NULL;
611 }
612
613 static struct script_spec *script_spec__findnew(const char *spec,
614 struct scripting_ops *ops)
615 {
616 struct script_spec *s = script_spec__find(spec);
617
618 if (s)
619 return s;
620
621 s = script_spec__new(spec, ops);
622 if (!s)
623 return NULL;
624
625 script_spec__add(s);
626
627 return s;
628 }
629
630 int script_spec_register(const char *spec, struct scripting_ops *ops)
631 {
632 struct script_spec *s;
633
634 s = script_spec__find(spec);
635 if (s)
636 return -1;
637
638 s = script_spec__findnew(spec, ops);
639 if (!s)
640 return -1;
641
642 return 0;
643 }
644
645 static struct scripting_ops *script_spec__lookup(const char *spec)
646 {
647 struct script_spec *s = script_spec__find(spec);
648 if (!s)
649 return NULL;
650
651 return s->ops;
652 }
653
654 static void list_available_languages(void)
655 {
656 struct script_spec *s;
657
658 fprintf(stderr, "\n");
659 fprintf(stderr, "Scripting language extensions (used in "
660 "perf script -s [spec:]script.[spec]):\n\n");
661
662 list_for_each_entry(s, &script_specs, node)
663 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
664
665 fprintf(stderr, "\n");
666 }
667
668 static int parse_scriptname(const struct option *opt __maybe_unused,
669 const char *str, int unset __maybe_unused)
670 {
671 char spec[PATH_MAX];
672 const char *script, *ext;
673 int len;
674
675 if (strcmp(str, "lang") == 0) {
676 list_available_languages();
677 exit(0);
678 }
679
680 script = strchr(str, ':');
681 if (script) {
682 len = script - str;
683 if (len >= PATH_MAX) {
684 fprintf(stderr, "invalid language specifier");
685 return -1;
686 }
687 strncpy(spec, str, len);
688 spec[len] = '\0';
689 scripting_ops = script_spec__lookup(spec);
690 if (!scripting_ops) {
691 fprintf(stderr, "invalid language specifier");
692 return -1;
693 }
694 script++;
695 } else {
696 script = str;
697 ext = strrchr(script, '.');
698 if (!ext) {
699 fprintf(stderr, "invalid script extension");
700 return -1;
701 }
702 scripting_ops = script_spec__lookup(++ext);
703 if (!scripting_ops) {
704 fprintf(stderr, "invalid script extension");
705 return -1;
706 }
707 }
708
709 script_name = strdup(script);
710
711 return 0;
712 }
713
714 static int parse_output_fields(const struct option *opt __maybe_unused,
715 const char *arg, int unset __maybe_unused)
716 {
717 char *tok;
718 int i, imax = ARRAY_SIZE(all_output_options);
719 int j;
720 int rc = 0;
721 char *str = strdup(arg);
722 int type = -1;
723
724 if (!str)
725 return -ENOMEM;
726
727 /* first word can state for which event type the user is specifying
728 * the fields. If no type exists, the specified fields apply to all
729 * event types found in the file minus the invalid fields for a type.
730 */
731 tok = strchr(str, ':');
732 if (tok) {
733 *tok = '\0';
734 tok++;
735 if (!strcmp(str, "hw"))
736 type = PERF_TYPE_HARDWARE;
737 else if (!strcmp(str, "sw"))
738 type = PERF_TYPE_SOFTWARE;
739 else if (!strcmp(str, "trace"))
740 type = PERF_TYPE_TRACEPOINT;
741 else if (!strcmp(str, "raw"))
742 type = PERF_TYPE_RAW;
743 else {
744 fprintf(stderr, "Invalid event type in field string.\n");
745 rc = -EINVAL;
746 goto out;
747 }
748
749 if (output[type].user_set)
750 pr_warning("Overriding previous field request for %s events.\n",
751 event_type(type));
752
753 output[type].fields = 0;
754 output[type].user_set = true;
755 output[type].wildcard_set = false;
756
757 } else {
758 tok = str;
759 if (strlen(str) == 0) {
760 fprintf(stderr,
761 "Cannot set fields to 'none' for all event types.\n");
762 rc = -EINVAL;
763 goto out;
764 }
765
766 if (output_set_by_user())
767 pr_warning("Overriding previous field request for all events.\n");
768
769 for (j = 0; j < PERF_TYPE_MAX; ++j) {
770 output[j].fields = 0;
771 output[j].user_set = true;
772 output[j].wildcard_set = true;
773 }
774 }
775
776 tok = strtok(tok, ",");
777 while (tok) {
778 for (i = 0; i < imax; ++i) {
779 if (strcmp(tok, all_output_options[i].str) == 0)
780 break;
781 }
782 if (i == imax) {
783 fprintf(stderr, "Invalid field requested.\n");
784 rc = -EINVAL;
785 goto out;
786 }
787
788 if (type == -1) {
789 /* add user option to all events types for
790 * which it is valid
791 */
792 for (j = 0; j < PERF_TYPE_MAX; ++j) {
793 if (output[j].invalid_fields & all_output_options[i].field) {
794 pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
795 all_output_options[i].str, event_type(j));
796 } else
797 output[j].fields |= all_output_options[i].field;
798 }
799 } else {
800 if (output[type].invalid_fields & all_output_options[i].field) {
801 fprintf(stderr, "\'%s\' not valid for %s events.\n",
802 all_output_options[i].str, event_type(type));
803
804 rc = -EINVAL;
805 goto out;
806 }
807 output[type].fields |= all_output_options[i].field;
808 }
809
810 tok = strtok(NULL, ",");
811 }
812
813 if (type >= 0) {
814 if (output[type].fields == 0) {
815 pr_debug("No fields requested for %s type. "
816 "Events will not be displayed.\n", event_type(type));
817 }
818 }
819
820 out:
821 free(str);
822 return rc;
823 }
824
825 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
826 static int is_directory(const char *base_path, const struct dirent *dent)
827 {
828 char path[PATH_MAX];
829 struct stat st;
830
831 sprintf(path, "%s/%s", base_path, dent->d_name);
832 if (stat(path, &st))
833 return 0;
834
835 return S_ISDIR(st.st_mode);
836 }
837
838 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
839 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
840 lang_next) \
841 if ((lang_dirent.d_type == DT_DIR || \
842 (lang_dirent.d_type == DT_UNKNOWN && \
843 is_directory(scripts_path, &lang_dirent))) && \
844 (strcmp(lang_dirent.d_name, ".")) && \
845 (strcmp(lang_dirent.d_name, "..")))
846
847 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
848 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
849 script_next) \
850 if (script_dirent.d_type != DT_DIR && \
851 (script_dirent.d_type != DT_UNKNOWN || \
852 !is_directory(lang_path, &script_dirent)))
853
854
855 #define RECORD_SUFFIX "-record"
856 #define REPORT_SUFFIX "-report"
857
858 struct script_desc {
859 struct list_head node;
860 char *name;
861 char *half_liner;
862 char *args;
863 };
864
865 static LIST_HEAD(script_descs);
866
867 static struct script_desc *script_desc__new(const char *name)
868 {
869 struct script_desc *s = zalloc(sizeof(*s));
870
871 if (s != NULL && name)
872 s->name = strdup(name);
873
874 return s;
875 }
876
877 static void script_desc__delete(struct script_desc *s)
878 {
879 free(s->name);
880 free(s->half_liner);
881 free(s->args);
882 free(s);
883 }
884
885 static void script_desc__add(struct script_desc *s)
886 {
887 list_add_tail(&s->node, &script_descs);
888 }
889
890 static struct script_desc *script_desc__find(const char *name)
891 {
892 struct script_desc *s;
893
894 list_for_each_entry(s, &script_descs, node)
895 if (strcasecmp(s->name, name) == 0)
896 return s;
897 return NULL;
898 }
899
900 static struct script_desc *script_desc__findnew(const char *name)
901 {
902 struct script_desc *s = script_desc__find(name);
903
904 if (s)
905 return s;
906
907 s = script_desc__new(name);
908 if (!s)
909 goto out_delete_desc;
910
911 script_desc__add(s);
912
913 return s;
914
915 out_delete_desc:
916 script_desc__delete(s);
917
918 return NULL;
919 }
920
921 static const char *ends_with(const char *str, const char *suffix)
922 {
923 size_t suffix_len = strlen(suffix);
924 const char *p = str;
925
926 if (strlen(str) > suffix_len) {
927 p = str + strlen(str) - suffix_len;
928 if (!strncmp(p, suffix, suffix_len))
929 return p;
930 }
931
932 return NULL;
933 }
934
935 static int read_script_info(struct script_desc *desc, const char *filename)
936 {
937 char line[BUFSIZ], *p;
938 FILE *fp;
939
940 fp = fopen(filename, "r");
941 if (!fp)
942 return -1;
943
944 while (fgets(line, sizeof(line), fp)) {
945 p = ltrim(line);
946 if (strlen(p) == 0)
947 continue;
948 if (*p != '#')
949 continue;
950 p++;
951 if (strlen(p) && *p == '!')
952 continue;
953
954 p = ltrim(p);
955 if (strlen(p) && p[strlen(p) - 1] == '\n')
956 p[strlen(p) - 1] = '\0';
957
958 if (!strncmp(p, "description:", strlen("description:"))) {
959 p += strlen("description:");
960 desc->half_liner = strdup(ltrim(p));
961 continue;
962 }
963
964 if (!strncmp(p, "args:", strlen("args:"))) {
965 p += strlen("args:");
966 desc->args = strdup(ltrim(p));
967 continue;
968 }
969 }
970
971 fclose(fp);
972
973 return 0;
974 }
975
976 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
977 {
978 char *script_root, *str;
979
980 script_root = strdup(script_dirent->d_name);
981 if (!script_root)
982 return NULL;
983
984 str = (char *)ends_with(script_root, suffix);
985 if (!str) {
986 free(script_root);
987 return NULL;
988 }
989
990 *str = '\0';
991 return script_root;
992 }
993
994 static int list_available_scripts(const struct option *opt __maybe_unused,
995 const char *s __maybe_unused,
996 int unset __maybe_unused)
997 {
998 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
999 char scripts_path[MAXPATHLEN];
1000 DIR *scripts_dir, *lang_dir;
1001 char script_path[MAXPATHLEN];
1002 char lang_path[MAXPATHLEN];
1003 struct script_desc *desc;
1004 char first_half[BUFSIZ];
1005 char *script_root;
1006
1007 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1008
1009 scripts_dir = opendir(scripts_path);
1010 if (!scripts_dir)
1011 return -1;
1012
1013 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1014 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1015 lang_dirent.d_name);
1016 lang_dir = opendir(lang_path);
1017 if (!lang_dir)
1018 continue;
1019
1020 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1021 script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
1022 if (script_root) {
1023 desc = script_desc__findnew(script_root);
1024 snprintf(script_path, MAXPATHLEN, "%s/%s",
1025 lang_path, script_dirent.d_name);
1026 read_script_info(desc, script_path);
1027 free(script_root);
1028 }
1029 }
1030 }
1031
1032 fprintf(stdout, "List of available trace scripts:\n");
1033 list_for_each_entry(desc, &script_descs, node) {
1034 sprintf(first_half, "%s %s", desc->name,
1035 desc->args ? desc->args : "");
1036 fprintf(stdout, " %-36s %s\n", first_half,
1037 desc->half_liner ? desc->half_liner : "");
1038 }
1039
1040 exit(0);
1041 }
1042
1043 /*
1044 * Some scripts specify the required events in their "xxx-record" file,
1045 * this function will check if the events in perf.data match those
1046 * mentioned in the "xxx-record".
1047 *
1048 * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1049 * which is covered well now. And new parsing code should be added to
1050 * cover the future complexing formats like event groups etc.
1051 */
1052 static int check_ev_match(char *dir_name, char *scriptname,
1053 struct perf_session *session)
1054 {
1055 char filename[MAXPATHLEN], evname[128];
1056 char line[BUFSIZ], *p;
1057 struct perf_evsel *pos;
1058 int match, len;
1059 FILE *fp;
1060
1061 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1062
1063 fp = fopen(filename, "r");
1064 if (!fp)
1065 return -1;
1066
1067 while (fgets(line, sizeof(line), fp)) {
1068 p = ltrim(line);
1069 if (*p == '#')
1070 continue;
1071
1072 while (strlen(p)) {
1073 p = strstr(p, "-e");
1074 if (!p)
1075 break;
1076
1077 p += 2;
1078 p = ltrim(p);
1079 len = strcspn(p, " \t");
1080 if (!len)
1081 break;
1082
1083 snprintf(evname, len + 1, "%s", p);
1084
1085 match = 0;
1086 list_for_each_entry(pos,
1087 &session->evlist->entries, node) {
1088 if (!strcmp(perf_evsel__name(pos), evname)) {
1089 match = 1;
1090 break;
1091 }
1092 }
1093
1094 if (!match) {
1095 fclose(fp);
1096 return -1;
1097 }
1098 }
1099 }
1100
1101 fclose(fp);
1102 return 0;
1103 }
1104
1105 /*
1106 * Return -1 if none is found, otherwise the actual scripts number.
1107 *
1108 * Currently the only user of this function is the script browser, which
1109 * will list all statically runnable scripts, select one, execute it and
1110 * show the output in a perf browser.
1111 */
1112 int find_scripts(char **scripts_array, char **scripts_path_array)
1113 {
1114 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1115 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1116 DIR *scripts_dir, *lang_dir;
1117 struct perf_session *session;
1118 char *temp;
1119 int i = 0;
1120
1121 session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
1122 if (!session)
1123 return -1;
1124
1125 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1126
1127 scripts_dir = opendir(scripts_path);
1128 if (!scripts_dir) {
1129 perf_session__delete(session);
1130 return -1;
1131 }
1132
1133 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1134 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1135 lang_dirent.d_name);
1136 #ifdef NO_LIBPERL
1137 if (strstr(lang_path, "perl"))
1138 continue;
1139 #endif
1140 #ifdef NO_LIBPYTHON
1141 if (strstr(lang_path, "python"))
1142 continue;
1143 #endif
1144
1145 lang_dir = opendir(lang_path);
1146 if (!lang_dir)
1147 continue;
1148
1149 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1150 /* Skip those real time scripts: xxxtop.p[yl] */
1151 if (strstr(script_dirent.d_name, "top."))
1152 continue;
1153 sprintf(scripts_path_array[i], "%s/%s", lang_path,
1154 script_dirent.d_name);
1155 temp = strchr(script_dirent.d_name, '.');
1156 snprintf(scripts_array[i],
1157 (temp - script_dirent.d_name) + 1,
1158 "%s", script_dirent.d_name);
1159
1160 if (check_ev_match(lang_path,
1161 scripts_array[i], session))
1162 continue;
1163
1164 i++;
1165 }
1166 closedir(lang_dir);
1167 }
1168
1169 closedir(scripts_dir);
1170 perf_session__delete(session);
1171 return i;
1172 }
1173
1174 static char *get_script_path(const char *script_root, const char *suffix)
1175 {
1176 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1177 char scripts_path[MAXPATHLEN];
1178 char script_path[MAXPATHLEN];
1179 DIR *scripts_dir, *lang_dir;
1180 char lang_path[MAXPATHLEN];
1181 char *__script_root;
1182
1183 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1184
1185 scripts_dir = opendir(scripts_path);
1186 if (!scripts_dir)
1187 return NULL;
1188
1189 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1190 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1191 lang_dirent.d_name);
1192 lang_dir = opendir(lang_path);
1193 if (!lang_dir)
1194 continue;
1195
1196 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1197 __script_root = get_script_root(&script_dirent, suffix);
1198 if (__script_root && !strcmp(script_root, __script_root)) {
1199 free(__script_root);
1200 closedir(lang_dir);
1201 closedir(scripts_dir);
1202 snprintf(script_path, MAXPATHLEN, "%s/%s",
1203 lang_path, script_dirent.d_name);
1204 return strdup(script_path);
1205 }
1206 free(__script_root);
1207 }
1208 closedir(lang_dir);
1209 }
1210 closedir(scripts_dir);
1211
1212 return NULL;
1213 }
1214
1215 static bool is_top_script(const char *script_path)
1216 {
1217 return ends_with(script_path, "top") == NULL ? false : true;
1218 }
1219
1220 static int has_required_arg(char *script_path)
1221 {
1222 struct script_desc *desc;
1223 int n_args = 0;
1224 char *p;
1225
1226 desc = script_desc__new(NULL);
1227
1228 if (read_script_info(desc, script_path))
1229 goto out;
1230
1231 if (!desc->args)
1232 goto out;
1233
1234 for (p = desc->args; *p; p++)
1235 if (*p == '<')
1236 n_args++;
1237 out:
1238 script_desc__delete(desc);
1239
1240 return n_args;
1241 }
1242
1243 static int have_cmd(int argc, const char **argv)
1244 {
1245 char **__argv = malloc(sizeof(const char *) * argc);
1246
1247 if (!__argv) {
1248 pr_err("malloc failed\n");
1249 return -1;
1250 }
1251
1252 memcpy(__argv, argv, sizeof(const char *) * argc);
1253 argc = parse_options(argc, (const char **)__argv, record_options,
1254 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1255 free(__argv);
1256
1257 system_wide = (argc == 0);
1258
1259 return 0;
1260 }
1261
1262 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1263 {
1264 bool show_full_info = false;
1265 char *rec_script_path = NULL;
1266 char *rep_script_path = NULL;
1267 struct perf_session *session;
1268 char *script_path = NULL;
1269 const char **__argv;
1270 int i, j, err;
1271 const struct option options[] = {
1272 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1273 "dump raw trace in ASCII"),
1274 OPT_INCR('v', "verbose", &verbose,
1275 "be more verbose (show symbol address, etc)"),
1276 OPT_BOOLEAN('L', "Latency", &latency_format,
1277 "show latency attributes (irqs/preemption disabled, etc)"),
1278 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1279 list_available_scripts),
1280 OPT_CALLBACK('s', "script", NULL, "name",
1281 "script file name (lang:script name, script name, or *)",
1282 parse_scriptname),
1283 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1284 "generate perf-script.xx script in specified language"),
1285 OPT_STRING('i', "input", &input_name, "file", "input file name"),
1286 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1287 "do various checks like samples ordering and lost events"),
1288 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1289 "file", "vmlinux pathname"),
1290 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1291 "file", "kallsyms pathname"),
1292 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1293 "When printing symbols do not display call chain"),
1294 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1295 "Look for files with symbols relative to this directory"),
1296 OPT_CALLBACK('f', "fields", NULL, "str",
1297 "comma separated output fields prepend with 'type:'. "
1298 "Valid types: hw,sw,trace,raw. "
1299 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1300 "addr,symoff", parse_output_fields),
1301 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1302 "system-wide collection from all CPUs"),
1303 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1304 "only consider these symbols"),
1305 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1306 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1307 "only display events for these comms"),
1308 OPT_BOOLEAN('I', "show-info", &show_full_info,
1309 "display extended information from perf.data file"),
1310 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
1311 "Show the path of [kernel.kallsyms]"),
1312 OPT_END()
1313 };
1314 const char * const script_usage[] = {
1315 "perf script [<options>]",
1316 "perf script [<options>] record <script> [<record-options>] <command>",
1317 "perf script [<options>] report <script> [script-args]",
1318 "perf script [<options>] <script> [<record-options>] <command>",
1319 "perf script [<options>] <top-script> [script-args]",
1320 NULL
1321 };
1322
1323 setup_scripting();
1324
1325 argc = parse_options(argc, argv, options, script_usage,
1326 PARSE_OPT_STOP_AT_NON_OPTION);
1327
1328 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1329 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1330 if (!rec_script_path)
1331 return cmd_record(argc, argv, NULL);
1332 }
1333
1334 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1335 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1336 if (!rep_script_path) {
1337 fprintf(stderr,
1338 "Please specify a valid report script"
1339 "(see 'perf script -l' for listing)\n");
1340 return -1;
1341 }
1342 }
1343
1344 /* make sure PERF_EXEC_PATH is set for scripts */
1345 perf_set_argv_exec_path(perf_exec_path());
1346
1347 if (argc && !script_name && !rec_script_path && !rep_script_path) {
1348 int live_pipe[2];
1349 int rep_args;
1350 pid_t pid;
1351
1352 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1353 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1354
1355 if (!rec_script_path && !rep_script_path) {
1356 fprintf(stderr, " Couldn't find script %s\n\n See perf"
1357 " script -l for available scripts.\n", argv[0]);
1358 usage_with_options(script_usage, options);
1359 }
1360
1361 if (is_top_script(argv[0])) {
1362 rep_args = argc - 1;
1363 } else {
1364 int rec_args;
1365
1366 rep_args = has_required_arg(rep_script_path);
1367 rec_args = (argc - 1) - rep_args;
1368 if (rec_args < 0) {
1369 fprintf(stderr, " %s script requires options."
1370 "\n\n See perf script -l for available "
1371 "scripts and options.\n", argv[0]);
1372 usage_with_options(script_usage, options);
1373 }
1374 }
1375
1376 if (pipe(live_pipe) < 0) {
1377 perror("failed to create pipe");
1378 return -1;
1379 }
1380
1381 pid = fork();
1382 if (pid < 0) {
1383 perror("failed to fork");
1384 return -1;
1385 }
1386
1387 if (!pid) {
1388 j = 0;
1389
1390 dup2(live_pipe[1], 1);
1391 close(live_pipe[0]);
1392
1393 if (is_top_script(argv[0])) {
1394 system_wide = true;
1395 } else if (!system_wide) {
1396 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
1397 err = -1;
1398 goto out;
1399 }
1400 }
1401
1402 __argv = malloc((argc + 6) * sizeof(const char *));
1403 if (!__argv) {
1404 pr_err("malloc failed\n");
1405 err = -ENOMEM;
1406 goto out;
1407 }
1408
1409 __argv[j++] = "/bin/sh";
1410 __argv[j++] = rec_script_path;
1411 if (system_wide)
1412 __argv[j++] = "-a";
1413 __argv[j++] = "-q";
1414 __argv[j++] = "-o";
1415 __argv[j++] = "-";
1416 for (i = rep_args + 1; i < argc; i++)
1417 __argv[j++] = argv[i];
1418 __argv[j++] = NULL;
1419
1420 execvp("/bin/sh", (char **)__argv);
1421 free(__argv);
1422 exit(-1);
1423 }
1424
1425 dup2(live_pipe[0], 0);
1426 close(live_pipe[1]);
1427
1428 __argv = malloc((argc + 4) * sizeof(const char *));
1429 if (!__argv) {
1430 pr_err("malloc failed\n");
1431 err = -ENOMEM;
1432 goto out;
1433 }
1434
1435 j = 0;
1436 __argv[j++] = "/bin/sh";
1437 __argv[j++] = rep_script_path;
1438 for (i = 1; i < rep_args + 1; i++)
1439 __argv[j++] = argv[i];
1440 __argv[j++] = "-i";
1441 __argv[j++] = "-";
1442 __argv[j++] = NULL;
1443
1444 execvp("/bin/sh", (char **)__argv);
1445 free(__argv);
1446 exit(-1);
1447 }
1448
1449 if (rec_script_path)
1450 script_path = rec_script_path;
1451 if (rep_script_path)
1452 script_path = rep_script_path;
1453
1454 if (script_path) {
1455 j = 0;
1456
1457 if (!rec_script_path)
1458 system_wide = false;
1459 else if (!system_wide) {
1460 if (have_cmd(argc - 1, &argv[1]) != 0) {
1461 err = -1;
1462 goto out;
1463 }
1464 }
1465
1466 __argv = malloc((argc + 2) * sizeof(const char *));
1467 if (!__argv) {
1468 pr_err("malloc failed\n");
1469 err = -ENOMEM;
1470 goto out;
1471 }
1472
1473 __argv[j++] = "/bin/sh";
1474 __argv[j++] = script_path;
1475 if (system_wide)
1476 __argv[j++] = "-a";
1477 for (i = 2; i < argc; i++)
1478 __argv[j++] = argv[i];
1479 __argv[j++] = NULL;
1480
1481 execvp("/bin/sh", (char **)__argv);
1482 free(__argv);
1483 exit(-1);
1484 }
1485
1486 if (symbol__init() < 0)
1487 return -1;
1488 if (!script_name)
1489 setup_pager();
1490
1491 session = perf_session__new(input_name, O_RDONLY, 0, false,
1492 &perf_script);
1493 if (session == NULL)
1494 return -ENOMEM;
1495
1496 if (cpu_list) {
1497 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
1498 return -1;
1499 }
1500
1501 if (!script_name && !generate_script_lang)
1502 perf_session__fprintf_info(session, stdout, show_full_info);
1503
1504 if (!no_callchain)
1505 symbol_conf.use_callchain = true;
1506 else
1507 symbol_conf.use_callchain = false;
1508
1509 if (generate_script_lang) {
1510 struct stat perf_stat;
1511 int input;
1512
1513 if (output_set_by_user()) {
1514 fprintf(stderr,
1515 "custom fields not supported for generated scripts");
1516 return -1;
1517 }
1518
1519 input = open(session->filename, O_RDONLY); /* input_name */
1520 if (input < 0) {
1521 perror("failed to open file");
1522 return -1;
1523 }
1524
1525 err = fstat(input, &perf_stat);
1526 if (err < 0) {
1527 perror("failed to stat file");
1528 return -1;
1529 }
1530
1531 if (!perf_stat.st_size) {
1532 fprintf(stderr, "zero-sized file, nothing to do!\n");
1533 return 0;
1534 }
1535
1536 scripting_ops = script_spec__lookup(generate_script_lang);
1537 if (!scripting_ops) {
1538 fprintf(stderr, "invalid language specifier");
1539 return -1;
1540 }
1541
1542 err = scripting_ops->generate_script(session->pevent,
1543 "perf-script");
1544 goto out;
1545 }
1546
1547 if (script_name) {
1548 err = scripting_ops->start_script(script_name, argc, argv);
1549 if (err)
1550 goto out;
1551 pr_debug("perf script started with script %s\n\n", script_name);
1552 }
1553
1554
1555 err = perf_session__check_output_opt(session);
1556 if (err < 0)
1557 goto out;
1558
1559 err = __cmd_script(session);
1560
1561 perf_session__delete(session);
1562 cleanup_scripting();
1563 out:
1564 return err;
1565 }
Linux kernel - Deliverables
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