projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'v3.13' into stable-3.14
[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 "util/data.h"
19 #include <linux/bitmap.h>
20
21 static char const *script_name;
22 static char const *generate_script_lang;
23 static bool debug_mode;
24 static u64 last_timestamp;
25 static u64 nr_unordered;
26 extern const struct option record_options[];
27 static bool no_callchain;
28 static bool latency_format;
29 static bool system_wide;
30 static const char *cpu_list;
31 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
32
33 enum perf_output_field {
34 PERF_OUTPUT_COMM = 1U << 0,
35 PERF_OUTPUT_TID = 1U << 1,
36 PERF_OUTPUT_PID = 1U << 2,
37 PERF_OUTPUT_TIME = 1U << 3,
38 PERF_OUTPUT_CPU = 1U << 4,
39 PERF_OUTPUT_EVNAME = 1U << 5,
40 PERF_OUTPUT_TRACE = 1U << 6,
41 PERF_OUTPUT_IP = 1U << 7,
42 PERF_OUTPUT_SYM = 1U << 8,
43 PERF_OUTPUT_DSO = 1U << 9,
44 PERF_OUTPUT_ADDR = 1U << 10,
45 PERF_OUTPUT_SYMOFFSET = 1U << 11,
46 };
47
48 struct output_option {
49 const char *str;
50 enum perf_output_field field;
51 } all_output_options[] = {
52 {.str = "comm", .field = PERF_OUTPUT_COMM},
53 {.str = "tid", .field = PERF_OUTPUT_TID},
54 {.str = "pid", .field = PERF_OUTPUT_PID},
55 {.str = "time", .field = PERF_OUTPUT_TIME},
56 {.str = "cpu", .field = PERF_OUTPUT_CPU},
57 {.str = "event", .field = PERF_OUTPUT_EVNAME},
58 {.str = "trace", .field = PERF_OUTPUT_TRACE},
59 {.str = "ip", .field = PERF_OUTPUT_IP},
60 {.str = "sym", .field = PERF_OUTPUT_SYM},
61 {.str = "dso", .field = PERF_OUTPUT_DSO},
62 {.str = "addr", .field = PERF_OUTPUT_ADDR},
63 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
64 };
65
66 /* default set to maintain compatibility with current format */
67 static struct {
68 bool user_set;
69 bool wildcard_set;
70 unsigned int print_ip_opts;
71 u64 fields;
72 u64 invalid_fields;
73 } output[PERF_TYPE_MAX] = {
74
75 [PERF_TYPE_HARDWARE] = {
76 .user_set = false,
77
78 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
79 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
80 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
81 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
82
83 .invalid_fields = PERF_OUTPUT_TRACE,
84 },
85
86 [PERF_TYPE_SOFTWARE] = {
87 .user_set = false,
88
89 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
90 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
91 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
92 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
93
94 .invalid_fields = PERF_OUTPUT_TRACE,
95 },
96
97 [PERF_TYPE_TRACEPOINT] = {
98 .user_set = false,
99
100 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
101 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
102 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
103 },
104
105 [PERF_TYPE_RAW] = {
106 .user_set = false,
107
108 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
109 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
110 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
111 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
112
113 .invalid_fields = PERF_OUTPUT_TRACE,
114 },
115 };
116
117 static bool output_set_by_user(void)
118 {
119 int j;
120 for (j = 0; j < PERF_TYPE_MAX; ++j) {
121 if (output[j].user_set)
122 return true;
123 }
124 return false;
125 }
126
127 static const char *output_field2str(enum perf_output_field field)
128 {
129 int i, imax = ARRAY_SIZE(all_output_options);
130 const char *str = "";
131
132 for (i = 0; i < imax; ++i) {
133 if (all_output_options[i].field == field) {
134 str = all_output_options[i].str;
135 break;
136 }
137 }
138 return str;
139 }
140
141 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
142
143 static int perf_evsel__check_stype(struct perf_evsel *evsel,
144 u64 sample_type, const char *sample_msg,
145 enum perf_output_field field)
146 {
147 struct perf_event_attr *attr = &evsel->attr;
148 int type = attr->type;
149 const char *evname;
150
151 if (attr->sample_type & sample_type)
152 return 0;
153
154 if (output[type].user_set) {
155 evname = perf_evsel__name(evsel);
156 pr_err("Samples for '%s' event do not have %s attribute set. "
157 "Cannot print '%s' field.\n",
158 evname, sample_msg, output_field2str(field));
159 return -1;
160 }
161
162 /* user did not ask for it explicitly so remove from the default list */
163 output[type].fields &= ~field;
164 evname = perf_evsel__name(evsel);
165 pr_debug("Samples for '%s' event do not have %s attribute set. "
166 "Skipping '%s' field.\n",
167 evname, sample_msg, output_field2str(field));
168
169 return 0;
170 }
171
172 static int perf_evsel__check_attr(struct perf_evsel *evsel,
173 struct perf_session *session)
174 {
175 struct perf_event_attr *attr = &evsel->attr;
176
177 if (PRINT_FIELD(TRACE) &&
178 !perf_session__has_traces(session, "record -R"))
179 return -EINVAL;
180
181 if (PRINT_FIELD(IP)) {
182 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
183 PERF_OUTPUT_IP))
184 return -EINVAL;
185
186 if (!no_callchain &&
187 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
188 symbol_conf.use_callchain = false;
189 }
190
191 if (PRINT_FIELD(ADDR) &&
192 perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
193 PERF_OUTPUT_ADDR))
194 return -EINVAL;
195
196 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
197 pr_err("Display of symbols requested but neither sample IP nor "
198 "sample address\nis selected. Hence, no addresses to convert "
199 "to symbols.\n");
200 return -EINVAL;
201 }
202 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
203 pr_err("Display of offsets requested but symbol is not"
204 "selected.\n");
205 return -EINVAL;
206 }
207 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
208 pr_err("Display of DSO requested but neither sample IP nor "
209 "sample address\nis selected. Hence, no addresses to convert "
210 "to DSO.\n");
211 return -EINVAL;
212 }
213
214 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
215 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
216 PERF_OUTPUT_TID|PERF_OUTPUT_PID))
217 return -EINVAL;
218
219 if (PRINT_FIELD(TIME) &&
220 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
221 PERF_OUTPUT_TIME))
222 return -EINVAL;
223
224 if (PRINT_FIELD(CPU) &&
225 perf_evsel__check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
226 PERF_OUTPUT_CPU))
227 return -EINVAL;
228
229 return 0;
230 }
231
232 static void set_print_ip_opts(struct perf_event_attr *attr)
233 {
234 unsigned int type = attr->type;
235
236 output[type].print_ip_opts = 0;
237 if (PRINT_FIELD(IP))
238 output[type].print_ip_opts |= PRINT_IP_OPT_IP;
239
240 if (PRINT_FIELD(SYM))
241 output[type].print_ip_opts |= PRINT_IP_OPT_SYM;
242
243 if (PRINT_FIELD(DSO))
244 output[type].print_ip_opts |= PRINT_IP_OPT_DSO;
245
246 if (PRINT_FIELD(SYMOFFSET))
247 output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
248 }
249
250 /*
251 * verify all user requested events exist and the samples
252 * have the expected data
253 */
254 static int perf_session__check_output_opt(struct perf_session *session)
255 {
256 int j;
257 struct perf_evsel *evsel;
258
259 for (j = 0; j < PERF_TYPE_MAX; ++j) {
260 evsel = perf_session__find_first_evtype(session, j);
261
262 /*
263 * even if fields is set to 0 (ie., show nothing) event must
264 * exist if user explicitly includes it on the command line
265 */
266 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
267 pr_err("%s events do not exist. "
268 "Remove corresponding -f option to proceed.\n",
269 event_type(j));
270 return -1;
271 }
272
273 if (evsel && output[j].fields &&
274 perf_evsel__check_attr(evsel, session))
275 return -1;
276
277 if (evsel == NULL)
278 continue;
279
280 set_print_ip_opts(&evsel->attr);
281 }
282
283 return 0;
284 }
285
286 static void print_sample_start(struct perf_sample *sample,
287 struct thread *thread,
288 struct perf_evsel *evsel)
289 {
290 struct perf_event_attr *attr = &evsel->attr;
291 const char *evname = NULL;
292 unsigned long secs;
293 unsigned long usecs;
294 unsigned long long nsecs;
295
296 if (PRINT_FIELD(COMM)) {
297 if (latency_format)
298 printf("%8.8s ", thread__comm_str(thread));
299 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
300 printf("%s ", thread__comm_str(thread));
301 else
302 printf("%16s ", thread__comm_str(thread));
303 }
304
305 if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
306 printf("%5d/%-5d ", sample->pid, sample->tid);
307 else if (PRINT_FIELD(PID))
308 printf("%5d ", sample->pid);
309 else if (PRINT_FIELD(TID))
310 printf("%5d ", sample->tid);
311
312 if (PRINT_FIELD(CPU)) {
313 if (latency_format)
314 printf("%3d ", sample->cpu);
315 else
316 printf("[%03d] ", sample->cpu);
317 }
318
319 if (PRINT_FIELD(TIME)) {
320 nsecs = sample->time;
321 secs = nsecs / NSECS_PER_SEC;
322 nsecs -= secs * NSECS_PER_SEC;
323 usecs = nsecs / NSECS_PER_USEC;
324 printf("%5lu.%06lu: ", secs, usecs);
325 }
326
327 if (PRINT_FIELD(EVNAME)) {
328 evname = perf_evsel__name(evsel);
329 printf("%s: ", evname ? evname : "[unknown]");
330 }
331 }
332
333 static bool is_bts_event(struct perf_event_attr *attr)
334 {
335 return ((attr->type == PERF_TYPE_HARDWARE) &&
336 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
337 (attr->sample_period == 1));
338 }
339
340 static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
341 {
342 if ((attr->type == PERF_TYPE_SOFTWARE) &&
343 ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
344 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
345 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
346 return true;
347
348 if (is_bts_event(attr))
349 return true;
350
351 return false;
352 }
353
354 static void print_sample_addr(union perf_event *event,
355 struct perf_sample *sample,
356 struct machine *machine,
357 struct thread *thread,
358 struct perf_event_attr *attr)
359 {
360 struct addr_location al;
361 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
362
363 printf("%16" PRIx64, sample->addr);
364
365 if (!sample_addr_correlates_sym(attr))
366 return;
367
368 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
369 sample->addr, &al);
370 if (!al.map)
371 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
372 sample->addr, &al);
373
374 al.cpu = sample->cpu;
375 al.sym = NULL;
376
377 if (al.map)
378 al.sym = map__find_symbol(al.map, al.addr, NULL);
379
380 if (PRINT_FIELD(SYM)) {
381 printf(" ");
382 if (PRINT_FIELD(SYMOFFSET))
383 symbol__fprintf_symname_offs(al.sym, &al, stdout);
384 else
385 symbol__fprintf_symname(al.sym, stdout);
386 }
387
388 if (PRINT_FIELD(DSO)) {
389 printf(" (");
390 map__fprintf_dsoname(al.map, stdout);
391 printf(")");
392 }
393 }
394
395 static void print_sample_bts(union perf_event *event,
396 struct perf_sample *sample,
397 struct perf_evsel *evsel,
398 struct machine *machine,
399 struct thread *thread)
400 {
401 struct perf_event_attr *attr = &evsel->attr;
402
403 /* print branch_from information */
404 if (PRINT_FIELD(IP)) {
405 if (!symbol_conf.use_callchain)
406 printf(" ");
407 else
408 printf("\n");
409 perf_evsel__print_ip(evsel, event, sample, machine,
410 output[attr->type].print_ip_opts,
411 PERF_MAX_STACK_DEPTH);
412 }
413
414 printf(" => ");
415
416 /* print branch_to information */
417 if (PRINT_FIELD(ADDR) ||
418 ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
419 !output[attr->type].user_set))
420 print_sample_addr(event, sample, machine, thread, attr);
421
422 printf("\n");
423 }
424
425 static void process_event(union perf_event *event, struct perf_sample *sample,
426 struct perf_evsel *evsel, struct machine *machine,
427 struct thread *thread,
428 struct addr_location *al __maybe_unused)
429 {
430 struct perf_event_attr *attr = &evsel->attr;
431
432 if (output[attr->type].fields == 0)
433 return;
434
435 print_sample_start(sample, thread, evsel);
436
437 if (is_bts_event(attr)) {
438 print_sample_bts(event, sample, evsel, machine, thread);
439 return;
440 }
441
442 if (PRINT_FIELD(TRACE))
443 event_format__print(evsel->tp_format, sample->cpu,
444 sample->raw_data, sample->raw_size);
445 if (PRINT_FIELD(ADDR))
446 print_sample_addr(event, sample, machine, thread, attr);
447
448 if (PRINT_FIELD(IP)) {
449 if (!symbol_conf.use_callchain)
450 printf(" ");
451 else
452 printf("\n");
453
454 perf_evsel__print_ip(evsel, event, sample, machine,
455 output[attr->type].print_ip_opts,
456 PERF_MAX_STACK_DEPTH);
457 }
458
459 printf("\n");
460 }
461
462 static int default_start_script(const char *script __maybe_unused,
463 int argc __maybe_unused,
464 const char **argv __maybe_unused)
465 {
466 return 0;
467 }
468
469 static int default_stop_script(void)
470 {
471 return 0;
472 }
473
474 static int default_generate_script(struct pevent *pevent __maybe_unused,
475 const char *outfile __maybe_unused)
476 {
477 return 0;
478 }
479
480 static struct scripting_ops default_scripting_ops = {
481 .start_script = default_start_script,
482 .stop_script = default_stop_script,
483 .process_event = process_event,
484 .generate_script = default_generate_script,
485 };
486
487 static struct scripting_ops *scripting_ops;
488
489 static void setup_scripting(void)
490 {
491 setup_perl_scripting();
492 setup_python_scripting();
493
494 scripting_ops = &default_scripting_ops;
495 }
496
497 static int cleanup_scripting(void)
498 {
499 pr_debug("\nperf script stopped\n");
500
501 return scripting_ops->stop_script();
502 }
503
504 static int process_sample_event(struct perf_tool *tool __maybe_unused,
505 union perf_event *event,
506 struct perf_sample *sample,
507 struct perf_evsel *evsel,
508 struct machine *machine)
509 {
510 struct addr_location al;
511 struct thread *thread = machine__findnew_thread(machine, sample->pid,
512 sample->tid);
513
514 if (thread == NULL) {
515 pr_debug("problem processing %d event, skipping it.\n",
516 event->header.type);
517 return -1;
518 }
519
520 if (debug_mode) {
521 if (sample->time < last_timestamp) {
522 pr_err("Samples misordered, previous: %" PRIu64
523 " this: %" PRIu64 "\n", last_timestamp,
524 sample->time);
525 nr_unordered++;
526 }
527 last_timestamp = sample->time;
528 return 0;
529 }
530
531 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
532 pr_err("problem processing %d event, skipping it.\n",
533 event->header.type);
534 return -1;
535 }
536
537 if (al.filtered)
538 return 0;
539
540 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
541 return 0;
542
543 scripting_ops->process_event(event, sample, evsel, machine, thread, &al);
544
545 evsel->hists.stats.total_period += sample->period;
546 return 0;
547 }
548
549 struct perf_script {
550 struct perf_tool tool;
551 struct perf_session *session;
552 };
553
554 static int process_attr(struct perf_tool *tool, union perf_event *event,
555 struct perf_evlist **pevlist)
556 {
557 struct perf_script *scr = container_of(tool, struct perf_script, tool);
558 struct perf_evlist *evlist;
559 struct perf_evsel *evsel, *pos;
560 int err;
561
562 err = perf_event__process_attr(tool, event, pevlist);
563 if (err)
564 return err;
565
566 evlist = *pevlist;
567 evsel = perf_evlist__last(*pevlist);
568
569 if (evsel->attr.type >= PERF_TYPE_MAX)
570 return 0;
571
572 list_for_each_entry(pos, &evlist->entries, node) {
573 if (pos->attr.type == evsel->attr.type && pos != evsel)
574 return 0;
575 }
576
577 set_print_ip_opts(&evsel->attr);
578
579 return perf_evsel__check_attr(evsel, scr->session);
580 }
581
582 static void sig_handler(int sig __maybe_unused)
583 {
584 session_done = 1;
585 }
586
587 static int __cmd_script(struct perf_script *script)
588 {
589 int ret;
590
591 signal(SIGINT, sig_handler);
592
593 ret = perf_session__process_events(script->session, &script->tool);
594
595 if (debug_mode)
596 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
597
598 return ret;
599 }
600
601 struct script_spec {
602 struct list_head node;
603 struct scripting_ops *ops;
604 char spec[0];
605 };
606
607 static LIST_HEAD(script_specs);
608
609 static struct script_spec *script_spec__new(const char *spec,
610 struct scripting_ops *ops)
611 {
612 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
613
614 if (s != NULL) {
615 strcpy(s->spec, spec);
616 s->ops = ops;
617 }
618
619 return s;
620 }
621
622 static void script_spec__add(struct script_spec *s)
623 {
624 list_add_tail(&s->node, &script_specs);
625 }
626
627 static struct script_spec *script_spec__find(const char *spec)
628 {
629 struct script_spec *s;
630
631 list_for_each_entry(s, &script_specs, node)
632 if (strcasecmp(s->spec, spec) == 0)
633 return s;
634 return NULL;
635 }
636
637 static struct script_spec *script_spec__findnew(const char *spec,
638 struct scripting_ops *ops)
639 {
640 struct script_spec *s = script_spec__find(spec);
641
642 if (s)
643 return s;
644
645 s = script_spec__new(spec, ops);
646 if (!s)
647 return NULL;
648
649 script_spec__add(s);
650
651 return s;
652 }
653
654 int script_spec_register(const char *spec, struct scripting_ops *ops)
655 {
656 struct script_spec *s;
657
658 s = script_spec__find(spec);
659 if (s)
660 return -1;
661
662 s = script_spec__findnew(spec, ops);
663 if (!s)
664 return -1;
665
666 return 0;
667 }
668
669 static struct scripting_ops *script_spec__lookup(const char *spec)
670 {
671 struct script_spec *s = script_spec__find(spec);
672 if (!s)
673 return NULL;
674
675 return s->ops;
676 }
677
678 static void list_available_languages(void)
679 {
680 struct script_spec *s;
681
682 fprintf(stderr, "\n");
683 fprintf(stderr, "Scripting language extensions (used in "
684 "perf script -s [spec:]script.[spec]):\n\n");
685
686 list_for_each_entry(s, &script_specs, node)
687 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
688
689 fprintf(stderr, "\n");
690 }
691
692 static int parse_scriptname(const struct option *opt __maybe_unused,
693 const char *str, int unset __maybe_unused)
694 {
695 char spec[PATH_MAX];
696 const char *script, *ext;
697 int len;
698
699 if (strcmp(str, "lang") == 0) {
700 list_available_languages();
701 exit(0);
702 }
703
704 script = strchr(str, ':');
705 if (script) {
706 len = script - str;
707 if (len >= PATH_MAX) {
708 fprintf(stderr, "invalid language specifier");
709 return -1;
710 }
711 strncpy(spec, str, len);
712 spec[len] = '\0';
713 scripting_ops = script_spec__lookup(spec);
714 if (!scripting_ops) {
715 fprintf(stderr, "invalid language specifier");
716 return -1;
717 }
718 script++;
719 } else {
720 script = str;
721 ext = strrchr(script, '.');
722 if (!ext) {
723 fprintf(stderr, "invalid script extension");
724 return -1;
725 }
726 scripting_ops = script_spec__lookup(++ext);
727 if (!scripting_ops) {
728 fprintf(stderr, "invalid script extension");
729 return -1;
730 }
731 }
732
733 script_name = strdup(script);
734
735 return 0;
736 }
737
738 static int parse_output_fields(const struct option *opt __maybe_unused,
739 const char *arg, int unset __maybe_unused)
740 {
741 char *tok;
742 int i, imax = ARRAY_SIZE(all_output_options);
743 int j;
744 int rc = 0;
745 char *str = strdup(arg);
746 int type = -1;
747
748 if (!str)
749 return -ENOMEM;
750
751 /* first word can state for which event type the user is specifying
752 * the fields. If no type exists, the specified fields apply to all
753 * event types found in the file minus the invalid fields for a type.
754 */
755 tok = strchr(str, ':');
756 if (tok) {
757 *tok = '\0';
758 tok++;
759 if (!strcmp(str, "hw"))
760 type = PERF_TYPE_HARDWARE;
761 else if (!strcmp(str, "sw"))
762 type = PERF_TYPE_SOFTWARE;
763 else if (!strcmp(str, "trace"))
764 type = PERF_TYPE_TRACEPOINT;
765 else if (!strcmp(str, "raw"))
766 type = PERF_TYPE_RAW;
767 else {
768 fprintf(stderr, "Invalid event type in field string.\n");
769 rc = -EINVAL;
770 goto out;
771 }
772
773 if (output[type].user_set)
774 pr_warning("Overriding previous field request for %s events.\n",
775 event_type(type));
776
777 output[type].fields = 0;
778 output[type].user_set = true;
779 output[type].wildcard_set = false;
780
781 } else {
782 tok = str;
783 if (strlen(str) == 0) {
784 fprintf(stderr,
785 "Cannot set fields to 'none' for all event types.\n");
786 rc = -EINVAL;
787 goto out;
788 }
789
790 if (output_set_by_user())
791 pr_warning("Overriding previous field request for all events.\n");
792
793 for (j = 0; j < PERF_TYPE_MAX; ++j) {
794 output[j].fields = 0;
795 output[j].user_set = true;
796 output[j].wildcard_set = true;
797 }
798 }
799
800 tok = strtok(tok, ",");
801 while (tok) {
802 for (i = 0; i < imax; ++i) {
803 if (strcmp(tok, all_output_options[i].str) == 0)
804 break;
805 }
806 if (i == imax) {
807 fprintf(stderr, "Invalid field requested.\n");
808 rc = -EINVAL;
809 goto out;
810 }
811
812 if (type == -1) {
813 /* add user option to all events types for
814 * which it is valid
815 */
816 for (j = 0; j < PERF_TYPE_MAX; ++j) {
817 if (output[j].invalid_fields & all_output_options[i].field) {
818 pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
819 all_output_options[i].str, event_type(j));
820 } else
821 output[j].fields |= all_output_options[i].field;
822 }
823 } else {
824 if (output[type].invalid_fields & all_output_options[i].field) {
825 fprintf(stderr, "\'%s\' not valid for %s events.\n",
826 all_output_options[i].str, event_type(type));
827
828 rc = -EINVAL;
829 goto out;
830 }
831 output[type].fields |= all_output_options[i].field;
832 }
833
834 tok = strtok(NULL, ",");
835 }
836
837 if (type >= 0) {
838 if (output[type].fields == 0) {
839 pr_debug("No fields requested for %s type. "
840 "Events will not be displayed.\n", event_type(type));
841 }
842 }
843
844 out:
845 free(str);
846 return rc;
847 }
848
849 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
850 static int is_directory(const char *base_path, const struct dirent *dent)
851 {
852 char path[PATH_MAX];
853 struct stat st;
854
855 sprintf(path, "%s/%s", base_path, dent->d_name);
856 if (stat(path, &st))
857 return 0;
858
859 return S_ISDIR(st.st_mode);
860 }
861
862 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
863 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
864 lang_next) \
865 if ((lang_dirent.d_type == DT_DIR || \
866 (lang_dirent.d_type == DT_UNKNOWN && \
867 is_directory(scripts_path, &lang_dirent))) && \
868 (strcmp(lang_dirent.d_name, ".")) && \
869 (strcmp(lang_dirent.d_name, "..")))
870
871 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
872 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
873 script_next) \
874 if (script_dirent.d_type != DT_DIR && \
875 (script_dirent.d_type != DT_UNKNOWN || \
876 !is_directory(lang_path, &script_dirent)))
877
878
879 #define RECORD_SUFFIX "-record"
880 #define REPORT_SUFFIX "-report"
881
882 struct script_desc {
883 struct list_head node;
884 char *name;
885 char *half_liner;
886 char *args;
887 };
888
889 static LIST_HEAD(script_descs);
890
891 static struct script_desc *script_desc__new(const char *name)
892 {
893 struct script_desc *s = zalloc(sizeof(*s));
894
895 if (s != NULL && name)
896 s->name = strdup(name);
897
898 return s;
899 }
900
901 static void script_desc__delete(struct script_desc *s)
902 {
903 free(s->name);
904 free(s->half_liner);
905 free(s->args);
906 free(s);
907 }
908
909 static void script_desc__add(struct script_desc *s)
910 {
911 list_add_tail(&s->node, &script_descs);
912 }
913
914 static struct script_desc *script_desc__find(const char *name)
915 {
916 struct script_desc *s;
917
918 list_for_each_entry(s, &script_descs, node)
919 if (strcasecmp(s->name, name) == 0)
920 return s;
921 return NULL;
922 }
923
924 static struct script_desc *script_desc__findnew(const char *name)
925 {
926 struct script_desc *s = script_desc__find(name);
927
928 if (s)
929 return s;
930
931 s = script_desc__new(name);
932 if (!s)
933 goto out_delete_desc;
934
935 script_desc__add(s);
936
937 return s;
938
939 out_delete_desc:
940 script_desc__delete(s);
941
942 return NULL;
943 }
944
945 static const char *ends_with(const char *str, const char *suffix)
946 {
947 size_t suffix_len = strlen(suffix);
948 const char *p = str;
949
950 if (strlen(str) > suffix_len) {
951 p = str + strlen(str) - suffix_len;
952 if (!strncmp(p, suffix, suffix_len))
953 return p;
954 }
955
956 return NULL;
957 }
958
959 static int read_script_info(struct script_desc *desc, const char *filename)
960 {
961 char line[BUFSIZ], *p;
962 FILE *fp;
963
964 fp = fopen(filename, "r");
965 if (!fp)
966 return -1;
967
968 while (fgets(line, sizeof(line), fp)) {
969 p = ltrim(line);
970 if (strlen(p) == 0)
971 continue;
972 if (*p != '#')
973 continue;
974 p++;
975 if (strlen(p) && *p == '!')
976 continue;
977
978 p = ltrim(p);
979 if (strlen(p) && p[strlen(p) - 1] == '\n')
980 p[strlen(p) - 1] = '\0';
981
982 if (!strncmp(p, "description:", strlen("description:"))) {
983 p += strlen("description:");
984 desc->half_liner = strdup(ltrim(p));
985 continue;
986 }
987
988 if (!strncmp(p, "args:", strlen("args:"))) {
989 p += strlen("args:");
990 desc->args = strdup(ltrim(p));
991 continue;
992 }
993 }
994
995 fclose(fp);
996
997 return 0;
998 }
999
1000 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
1001 {
1002 char *script_root, *str;
1003
1004 script_root = strdup(script_dirent->d_name);
1005 if (!script_root)
1006 return NULL;
1007
1008 str = (char *)ends_with(script_root, suffix);
1009 if (!str) {
1010 free(script_root);
1011 return NULL;
1012 }
1013
1014 *str = '\0';
1015 return script_root;
1016 }
1017
1018 static int list_available_scripts(const struct option *opt __maybe_unused,
1019 const char *s __maybe_unused,
1020 int unset __maybe_unused)
1021 {
1022 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1023 char scripts_path[MAXPATHLEN];
1024 DIR *scripts_dir, *lang_dir;
1025 char script_path[MAXPATHLEN];
1026 char lang_path[MAXPATHLEN];
1027 struct script_desc *desc;
1028 char first_half[BUFSIZ];
1029 char *script_root;
1030
1031 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1032
1033 scripts_dir = opendir(scripts_path);
1034 if (!scripts_dir)
1035 return -1;
1036
1037 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1038 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1039 lang_dirent.d_name);
1040 lang_dir = opendir(lang_path);
1041 if (!lang_dir)
1042 continue;
1043
1044 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1045 script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
1046 if (script_root) {
1047 desc = script_desc__findnew(script_root);
1048 snprintf(script_path, MAXPATHLEN, "%s/%s",
1049 lang_path, script_dirent.d_name);
1050 read_script_info(desc, script_path);
1051 free(script_root);
1052 }
1053 }
1054 }
1055
1056 fprintf(stdout, "List of available trace scripts:\n");
1057 list_for_each_entry(desc, &script_descs, node) {
1058 sprintf(first_half, "%s %s", desc->name,
1059 desc->args ? desc->args : "");
1060 fprintf(stdout, " %-36s %s\n", first_half,
1061 desc->half_liner ? desc->half_liner : "");
1062 }
1063
1064 exit(0);
1065 }
1066
1067 /*
1068 * Some scripts specify the required events in their "xxx-record" file,
1069 * this function will check if the events in perf.data match those
1070 * mentioned in the "xxx-record".
1071 *
1072 * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1073 * which is covered well now. And new parsing code should be added to
1074 * cover the future complexing formats like event groups etc.
1075 */
1076 static int check_ev_match(char *dir_name, char *scriptname,
1077 struct perf_session *session)
1078 {
1079 char filename[MAXPATHLEN], evname[128];
1080 char line[BUFSIZ], *p;
1081 struct perf_evsel *pos;
1082 int match, len;
1083 FILE *fp;
1084
1085 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1086
1087 fp = fopen(filename, "r");
1088 if (!fp)
1089 return -1;
1090
1091 while (fgets(line, sizeof(line), fp)) {
1092 p = ltrim(line);
1093 if (*p == '#')
1094 continue;
1095
1096 while (strlen(p)) {
1097 p = strstr(p, "-e");
1098 if (!p)
1099 break;
1100
1101 p += 2;
1102 p = ltrim(p);
1103 len = strcspn(p, " \t");
1104 if (!len)
1105 break;
1106
1107 snprintf(evname, len + 1, "%s", p);
1108
1109 match = 0;
1110 list_for_each_entry(pos,
1111 &session->evlist->entries, node) {
1112 if (!strcmp(perf_evsel__name(pos), evname)) {
1113 match = 1;
1114 break;
1115 }
1116 }
1117
1118 if (!match) {
1119 fclose(fp);
1120 return -1;
1121 }
1122 }
1123 }
1124
1125 fclose(fp);
1126 return 0;
1127 }
1128
1129 /*
1130 * Return -1 if none is found, otherwise the actual scripts number.
1131 *
1132 * Currently the only user of this function is the script browser, which
1133 * will list all statically runnable scripts, select one, execute it and
1134 * show the output in a perf browser.
1135 */
1136 int find_scripts(char **scripts_array, char **scripts_path_array)
1137 {
1138 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1139 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1140 DIR *scripts_dir, *lang_dir;
1141 struct perf_session *session;
1142 struct perf_data_file file = {
1143 .path = input_name,
1144 .mode = PERF_DATA_MODE_READ,
1145 };
1146 char *temp;
1147 int i = 0;
1148
1149 session = perf_session__new(&file, false, NULL);
1150 if (!session)
1151 return -1;
1152
1153 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1154
1155 scripts_dir = opendir(scripts_path);
1156 if (!scripts_dir) {
1157 perf_session__delete(session);
1158 return -1;
1159 }
1160
1161 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1162 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1163 lang_dirent.d_name);
1164 #ifdef NO_LIBPERL
1165 if (strstr(lang_path, "perl"))
1166 continue;
1167 #endif
1168 #ifdef NO_LIBPYTHON
1169 if (strstr(lang_path, "python"))
1170 continue;
1171 #endif
1172
1173 lang_dir = opendir(lang_path);
1174 if (!lang_dir)
1175 continue;
1176
1177 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1178 /* Skip those real time scripts: xxxtop.p[yl] */
1179 if (strstr(script_dirent.d_name, "top."))
1180 continue;
1181 sprintf(scripts_path_array[i], "%s/%s", lang_path,
1182 script_dirent.d_name);
1183 temp = strchr(script_dirent.d_name, '.');
1184 snprintf(scripts_array[i],
1185 (temp - script_dirent.d_name) + 1,
1186 "%s", script_dirent.d_name);
1187
1188 if (check_ev_match(lang_path,
1189 scripts_array[i], session))
1190 continue;
1191
1192 i++;
1193 }
1194 closedir(lang_dir);
1195 }
1196
1197 closedir(scripts_dir);
1198 perf_session__delete(session);
1199 return i;
1200 }
1201
1202 static char *get_script_path(const char *script_root, const char *suffix)
1203 {
1204 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1205 char scripts_path[MAXPATHLEN];
1206 char script_path[MAXPATHLEN];
1207 DIR *scripts_dir, *lang_dir;
1208 char lang_path[MAXPATHLEN];
1209 char *__script_root;
1210
1211 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1212
1213 scripts_dir = opendir(scripts_path);
1214 if (!scripts_dir)
1215 return NULL;
1216
1217 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1218 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1219 lang_dirent.d_name);
1220 lang_dir = opendir(lang_path);
1221 if (!lang_dir)
1222 continue;
1223
1224 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1225 __script_root = get_script_root(&script_dirent, suffix);
1226 if (__script_root && !strcmp(script_root, __script_root)) {
1227 free(__script_root);
1228 closedir(lang_dir);
1229 closedir(scripts_dir);
1230 snprintf(script_path, MAXPATHLEN, "%s/%s",
1231 lang_path, script_dirent.d_name);
1232 return strdup(script_path);
1233 }
1234 free(__script_root);
1235 }
1236 closedir(lang_dir);
1237 }
1238 closedir(scripts_dir);
1239
1240 return NULL;
1241 }
1242
1243 static bool is_top_script(const char *script_path)
1244 {
1245 return ends_with(script_path, "top") == NULL ? false : true;
1246 }
1247
1248 static int has_required_arg(char *script_path)
1249 {
1250 struct script_desc *desc;
1251 int n_args = 0;
1252 char *p;
1253
1254 desc = script_desc__new(NULL);
1255
1256 if (read_script_info(desc, script_path))
1257 goto out;
1258
1259 if (!desc->args)
1260 goto out;
1261
1262 for (p = desc->args; *p; p++)
1263 if (*p == '<')
1264 n_args++;
1265 out:
1266 script_desc__delete(desc);
1267
1268 return n_args;
1269 }
1270
1271 static int have_cmd(int argc, const char **argv)
1272 {
1273 char **__argv = malloc(sizeof(const char *) * argc);
1274
1275 if (!__argv) {
1276 pr_err("malloc failed\n");
1277 return -1;
1278 }
1279
1280 memcpy(__argv, argv, sizeof(const char *) * argc);
1281 argc = parse_options(argc, (const char **)__argv, record_options,
1282 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1283 free(__argv);
1284
1285 system_wide = (argc == 0);
1286
1287 return 0;
1288 }
1289
1290 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1291 {
1292 bool show_full_info = false;
1293 char *rec_script_path = NULL;
1294 char *rep_script_path = NULL;
1295 struct perf_session *session;
1296 char *script_path = NULL;
1297 const char **__argv;
1298 int i, j, err;
1299 struct perf_script script = {
1300 .tool = {
1301 .sample = process_sample_event,
1302 .mmap = perf_event__process_mmap,
1303 .mmap2 = perf_event__process_mmap2,
1304 .comm = perf_event__process_comm,
1305 .exit = perf_event__process_exit,
1306 .fork = perf_event__process_fork,
1307 .attr = process_attr,
1308 .tracing_data = perf_event__process_tracing_data,
1309 .build_id = perf_event__process_build_id,
1310 .ordered_samples = true,
1311 .ordering_requires_timestamps = true,
1312 },
1313 };
1314 const struct option options[] = {
1315 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1316 "dump raw trace in ASCII"),
1317 OPT_INCR('v', "verbose", &verbose,
1318 "be more verbose (show symbol address, etc)"),
1319 OPT_BOOLEAN('L', "Latency", &latency_format,
1320 "show latency attributes (irqs/preemption disabled, etc)"),
1321 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1322 list_available_scripts),
1323 OPT_CALLBACK('s', "script", NULL, "name",
1324 "script file name (lang:script name, script name, or *)",
1325 parse_scriptname),
1326 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1327 "generate perf-script.xx script in specified language"),
1328 OPT_STRING('i', "input", &input_name, "file", "input file name"),
1329 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1330 "do various checks like samples ordering and lost events"),
1331 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1332 "file", "vmlinux pathname"),
1333 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1334 "file", "kallsyms pathname"),
1335 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1336 "When printing symbols do not display call chain"),
1337 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1338 "Look for files with symbols relative to this directory"),
1339 OPT_CALLBACK('f', "fields", NULL, "str",
1340 "comma separated output fields prepend with 'type:'. "
1341 "Valid types: hw,sw,trace,raw. "
1342 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1343 "addr,symoff", parse_output_fields),
1344 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1345 "system-wide collection from all CPUs"),
1346 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1347 "only consider these symbols"),
1348 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1349 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1350 "only display events for these comms"),
1351 OPT_BOOLEAN('I', "show-info", &show_full_info,
1352 "display extended information from perf.data file"),
1353 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
1354 "Show the path of [kernel.kallsyms]"),
1355 OPT_END()
1356 };
1357 const char * const script_usage[] = {
1358 "perf script [<options>]",
1359 "perf script [<options>] record <script> [<record-options>] <command>",
1360 "perf script [<options>] report <script> [script-args]",
1361 "perf script [<options>] <script> [<record-options>] <command>",
1362 "perf script [<options>] <top-script> [script-args]",
1363 NULL
1364 };
1365 struct perf_data_file file = {
1366 .mode = PERF_DATA_MODE_READ,
1367 };
1368
1369 setup_scripting();
1370
1371 argc = parse_options(argc, argv, options, script_usage,
1372 PARSE_OPT_STOP_AT_NON_OPTION);
1373
1374 file.path = input_name;
1375
1376 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1377 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1378 if (!rec_script_path)
1379 return cmd_record(argc, argv, NULL);
1380 }
1381
1382 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1383 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1384 if (!rep_script_path) {
1385 fprintf(stderr,
1386 "Please specify a valid report script"
1387 "(see 'perf script -l' for listing)\n");
1388 return -1;
1389 }
1390 }
1391
1392 /* make sure PERF_EXEC_PATH is set for scripts */
1393 perf_set_argv_exec_path(perf_exec_path());
1394
1395 if (argc && !script_name && !rec_script_path && !rep_script_path) {
1396 int live_pipe[2];
1397 int rep_args;
1398 pid_t pid;
1399
1400 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1401 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1402
1403 if (!rec_script_path && !rep_script_path) {
1404 fprintf(stderr, " Couldn't find script %s\n\n See perf"
1405 " script -l for available scripts.\n", argv[0]);
1406 usage_with_options(script_usage, options);
1407 }
1408
1409 if (is_top_script(argv[0])) {
1410 rep_args = argc - 1;
1411 } else {
1412 int rec_args;
1413
1414 rep_args = has_required_arg(rep_script_path);
1415 rec_args = (argc - 1) - rep_args;
1416 if (rec_args < 0) {
1417 fprintf(stderr, " %s script requires options."
1418 "\n\n See perf script -l for available "
1419 "scripts and options.\n", argv[0]);
1420 usage_with_options(script_usage, options);
1421 }
1422 }
1423
1424 if (pipe(live_pipe) < 0) {
1425 perror("failed to create pipe");
1426 return -1;
1427 }
1428
1429 pid = fork();
1430 if (pid < 0) {
1431 perror("failed to fork");
1432 return -1;
1433 }
1434
1435 if (!pid) {
1436 j = 0;
1437
1438 dup2(live_pipe[1], 1);
1439 close(live_pipe[0]);
1440
1441 if (is_top_script(argv[0])) {
1442 system_wide = true;
1443 } else if (!system_wide) {
1444 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
1445 err = -1;
1446 goto out;
1447 }
1448 }
1449
1450 __argv = malloc((argc + 6) * sizeof(const char *));
1451 if (!__argv) {
1452 pr_err("malloc failed\n");
1453 err = -ENOMEM;
1454 goto out;
1455 }
1456
1457 __argv[j++] = "/bin/sh";
1458 __argv[j++] = rec_script_path;
1459 if (system_wide)
1460 __argv[j++] = "-a";
1461 __argv[j++] = "-q";
1462 __argv[j++] = "-o";
1463 __argv[j++] = "-";
1464 for (i = rep_args + 1; i < argc; i++)
1465 __argv[j++] = argv[i];
1466 __argv[j++] = NULL;
1467
1468 execvp("/bin/sh", (char **)__argv);
1469 free(__argv);
1470 exit(-1);
1471 }
1472
1473 dup2(live_pipe[0], 0);
1474 close(live_pipe[1]);
1475
1476 __argv = malloc((argc + 4) * sizeof(const char *));
1477 if (!__argv) {
1478 pr_err("malloc failed\n");
1479 err = -ENOMEM;
1480 goto out;
1481 }
1482
1483 j = 0;
1484 __argv[j++] = "/bin/sh";
1485 __argv[j++] = rep_script_path;
1486 for (i = 1; i < rep_args + 1; i++)
1487 __argv[j++] = argv[i];
1488 __argv[j++] = "-i";
1489 __argv[j++] = "-";
1490 __argv[j++] = NULL;
1491
1492 execvp("/bin/sh", (char **)__argv);
1493 free(__argv);
1494 exit(-1);
1495 }
1496
1497 if (rec_script_path)
1498 script_path = rec_script_path;
1499 if (rep_script_path)
1500 script_path = rep_script_path;
1501
1502 if (script_path) {
1503 j = 0;
1504
1505 if (!rec_script_path)
1506 system_wide = false;
1507 else if (!system_wide) {
1508 if (have_cmd(argc - 1, &argv[1]) != 0) {
1509 err = -1;
1510 goto out;
1511 }
1512 }
1513
1514 __argv = malloc((argc + 2) * sizeof(const char *));
1515 if (!__argv) {
1516 pr_err("malloc failed\n");
1517 err = -ENOMEM;
1518 goto out;
1519 }
1520
1521 __argv[j++] = "/bin/sh";
1522 __argv[j++] = script_path;
1523 if (system_wide)
1524 __argv[j++] = "-a";
1525 for (i = 2; i < argc; i++)
1526 __argv[j++] = argv[i];
1527 __argv[j++] = NULL;
1528
1529 execvp("/bin/sh", (char **)__argv);
1530 free(__argv);
1531 exit(-1);
1532 }
1533
1534 if (symbol__init() < 0)
1535 return -1;
1536 if (!script_name)
1537 setup_pager();
1538
1539 session = perf_session__new(&file, false, &script.tool);
1540 if (session == NULL)
1541 return -ENOMEM;
1542
1543 script.session = session;
1544
1545 if (cpu_list) {
1546 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
1547 return -1;
1548 }
1549
1550 if (!script_name && !generate_script_lang)
1551 perf_session__fprintf_info(session, stdout, show_full_info);
1552
1553 if (!no_callchain)
1554 symbol_conf.use_callchain = true;
1555 else
1556 symbol_conf.use_callchain = false;
1557
1558 if (generate_script_lang) {
1559 struct stat perf_stat;
1560 int input;
1561
1562 if (output_set_by_user()) {
1563 fprintf(stderr,
1564 "custom fields not supported for generated scripts");
1565 return -1;
1566 }
1567
1568 input = open(file.path, O_RDONLY); /* input_name */
1569 if (input < 0) {
1570 perror("failed to open file");
1571 return -1;
1572 }
1573
1574 err = fstat(input, &perf_stat);
1575 if (err < 0) {
1576 perror("failed to stat file");
1577 return -1;
1578 }
1579
1580 if (!perf_stat.st_size) {
1581 fprintf(stderr, "zero-sized file, nothing to do!\n");
1582 return 0;
1583 }
1584
1585 scripting_ops = script_spec__lookup(generate_script_lang);
1586 if (!scripting_ops) {
1587 fprintf(stderr, "invalid language specifier");
1588 return -1;
1589 }
1590
1591 err = scripting_ops->generate_script(session->pevent,
1592 "perf-script");
1593 goto out;
1594 }
1595
1596 if (script_name) {
1597 err = scripting_ops->start_script(script_name, argc, argv);
1598 if (err)
1599 goto out;
1600 pr_debug("perf script started with script %s\n\n", script_name);
1601 }
1602
1603
1604 err = perf_session__check_output_opt(session);
1605 if (err < 0)
1606 goto out;
1607
1608 err = __cmd_script(&script);
1609
1610 perf_session__delete(session);
1611 cleanup_scripting();
1612 out:
1613 return err;
1614 }
Linux kernel - Deliverables
This page took 0.063912 seconds and 6 git commands to generate.