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[pohmelfs.git] / tools / perf / builtin-script.c
blobbb68ddf257b7d77667ef9731ffb68c1494e0f239
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 <linux/bitmap.h>
18
19 static char const *script_name;
20 static char const *generate_script_lang;
21 static bool debug_mode;
22 static u64 last_timestamp;
23 static u64 nr_unordered;
24 extern const struct option record_options[];
25 static bool no_callchain;
26 static bool show_full_info;
27 static bool system_wide;
28 static const char *cpu_list;
29 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
30
31 enum perf_output_field {
32 PERF_OUTPUT_COMM = 1U << 0,
33 PERF_OUTPUT_TID = 1U << 1,
34 PERF_OUTPUT_PID = 1U << 2,
35 PERF_OUTPUT_TIME = 1U << 3,
36 PERF_OUTPUT_CPU = 1U << 4,
37 PERF_OUTPUT_EVNAME = 1U << 5,
38 PERF_OUTPUT_TRACE = 1U << 6,
39 PERF_OUTPUT_IP = 1U << 7,
40 PERF_OUTPUT_SYM = 1U << 8,
41 PERF_OUTPUT_DSO = 1U << 9,
42 PERF_OUTPUT_ADDR = 1U << 10,
43 };
44
45 struct output_option {
46 const char *str;
47 enum perf_output_field field;
48 } all_output_options[] = {
49 {.str = "comm", .field = PERF_OUTPUT_COMM},
50 {.str = "tid", .field = PERF_OUTPUT_TID},
51 {.str = "pid", .field = PERF_OUTPUT_PID},
52 {.str = "time", .field = PERF_OUTPUT_TIME},
53 {.str = "cpu", .field = PERF_OUTPUT_CPU},
54 {.str = "event", .field = PERF_OUTPUT_EVNAME},
55 {.str = "trace", .field = PERF_OUTPUT_TRACE},
56 {.str = "ip", .field = PERF_OUTPUT_IP},
57 {.str = "sym", .field = PERF_OUTPUT_SYM},
58 {.str = "dso", .field = PERF_OUTPUT_DSO},
59 {.str = "addr", .field = PERF_OUTPUT_ADDR},
60 };
61
62 /* default set to maintain compatibility with current format */
63 static struct {
64 bool user_set;
65 bool wildcard_set;
66 u64 fields;
67 u64 invalid_fields;
68 } output[PERF_TYPE_MAX] = {
69
70 [PERF_TYPE_HARDWARE] = {
71 .user_set = false,
72
73 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
74 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
75 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
76 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
77
78 .invalid_fields = PERF_OUTPUT_TRACE,
79 },
80
81 [PERF_TYPE_SOFTWARE] = {
82 .user_set = false,
83
84 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
85 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
86 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
87 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
88
89 .invalid_fields = PERF_OUTPUT_TRACE,
90 },
91
92 [PERF_TYPE_TRACEPOINT] = {
93 .user_set = false,
94
95 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
96 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
97 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
98 },
99
100 [PERF_TYPE_RAW] = {
101 .user_set = false,
102
103 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
104 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
105 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
106 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
107
108 .invalid_fields = PERF_OUTPUT_TRACE,
109 },
110 };
111
112 static bool output_set_by_user(void)
113 {
114 int j;
115 for (j = 0; j < PERF_TYPE_MAX; ++j) {
116 if (output[j].user_set)
117 return true;
118 }
119 return false;
120 }
121
122 static const char *output_field2str(enum perf_output_field field)
123 {
124 int i, imax = ARRAY_SIZE(all_output_options);
125 const char *str = "";
126
127 for (i = 0; i < imax; ++i) {
128 if (all_output_options[i].field == field) {
129 str = all_output_options[i].str;
130 break;
131 }
132 }
133 return str;
134 }
135
136 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
137
138 static int perf_event_attr__check_stype(struct perf_event_attr *attr,
139 u64 sample_type, const char *sample_msg,
140 enum perf_output_field field)
141 {
142 int type = attr->type;
143 const char *evname;
144
145 if (attr->sample_type & sample_type)
146 return 0;
147
148 if (output[type].user_set) {
149 evname = __event_name(attr->type, attr->config);
150 pr_err("Samples for '%s' event do not have %s attribute set. "
151 "Cannot print '%s' field.\n",
152 evname, sample_msg, output_field2str(field));
153 return -1;
154 }
155
156 /* user did not ask for it explicitly so remove from the default list */
157 output[type].fields &= ~field;
158 evname = __event_name(attr->type, attr->config);
159 pr_debug("Samples for '%s' event do not have %s attribute set. "
160 "Skipping '%s' field.\n",
161 evname, sample_msg, output_field2str(field));
162
163 return 0;
164 }
165
166 static int perf_evsel__check_attr(struct perf_evsel *evsel,
167 struct perf_session *session)
168 {
169 struct perf_event_attr *attr = &evsel->attr;
170
171 if (PRINT_FIELD(TRACE) &&
172 !perf_session__has_traces(session, "record -R"))
173 return -EINVAL;
174
175 if (PRINT_FIELD(IP)) {
176 if (perf_event_attr__check_stype(attr, PERF_SAMPLE_IP, "IP",
177 PERF_OUTPUT_IP))
178 return -EINVAL;
179
180 if (!no_callchain &&
181 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
182 symbol_conf.use_callchain = false;
183 }
184
185 if (PRINT_FIELD(ADDR) &&
186 perf_event_attr__check_stype(attr, PERF_SAMPLE_ADDR, "ADDR",
187 PERF_OUTPUT_ADDR))
188 return -EINVAL;
189
190 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
191 pr_err("Display of symbols requested but neither sample IP nor "
192 "sample address\nis selected. Hence, no addresses to convert "
193 "to symbols.\n");
194 return -EINVAL;
195 }
196 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
197 pr_err("Display of DSO requested but neither sample IP nor "
198 "sample address\nis selected. Hence, no addresses to convert "
199 "to DSO.\n");
200 return -EINVAL;
201 }
202
203 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
204 perf_event_attr__check_stype(attr, PERF_SAMPLE_TID, "TID",
205 PERF_OUTPUT_TID|PERF_OUTPUT_PID))
206 return -EINVAL;
207
208 if (PRINT_FIELD(TIME) &&
209 perf_event_attr__check_stype(attr, PERF_SAMPLE_TIME, "TIME",
210 PERF_OUTPUT_TIME))
211 return -EINVAL;
212
213 if (PRINT_FIELD(CPU) &&
214 perf_event_attr__check_stype(attr, PERF_SAMPLE_CPU, "CPU",
215 PERF_OUTPUT_CPU))
216 return -EINVAL;
217
218 return 0;
219 }
220
221 /*
222 * verify all user requested events exist and the samples
223 * have the expected data
224 */
225 static int perf_session__check_output_opt(struct perf_session *session)
226 {
227 int j;
228 struct perf_evsel *evsel;
229
230 for (j = 0; j < PERF_TYPE_MAX; ++j) {
231 evsel = perf_session__find_first_evtype(session, j);
232
233 /*
234 * even if fields is set to 0 (ie., show nothing) event must
235 * exist if user explicitly includes it on the command line
236 */
237 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
238 pr_err("%s events do not exist. "
239 "Remove corresponding -f option to proceed.\n",
240 event_type(j));
241 return -1;
242 }
243
244 if (evsel && output[j].fields &&
245 perf_evsel__check_attr(evsel, session))
246 return -1;
247 }
248
249 return 0;
250 }
251
252 static void print_sample_start(struct perf_sample *sample,
253 struct thread *thread,
254 struct perf_event_attr *attr)
255 {
256 int type;
257 struct event *event;
258 const char *evname = NULL;
259 unsigned long secs;
260 unsigned long usecs;
261 unsigned long long nsecs;
262
263 if (PRINT_FIELD(COMM)) {
264 if (latency_format)
265 printf("%8.8s ", thread->comm);
266 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
267 printf("%s ", thread->comm);
268 else
269 printf("%16s ", thread->comm);
270 }
271
272 if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
273 printf("%5d/%-5d ", sample->pid, sample->tid);
274 else if (PRINT_FIELD(PID))
275 printf("%5d ", sample->pid);
276 else if (PRINT_FIELD(TID))
277 printf("%5d ", sample->tid);
278
279 if (PRINT_FIELD(CPU)) {
280 if (latency_format)
281 printf("%3d ", sample->cpu);
282 else
283 printf("[%03d] ", sample->cpu);
284 }
285
286 if (PRINT_FIELD(TIME)) {
287 nsecs = sample->time;
288 secs = nsecs / NSECS_PER_SEC;
289 nsecs -= secs * NSECS_PER_SEC;
290 usecs = nsecs / NSECS_PER_USEC;
291 printf("%5lu.%06lu: ", secs, usecs);
292 }
293
294 if (PRINT_FIELD(EVNAME)) {
295 if (attr->type == PERF_TYPE_TRACEPOINT) {
296 type = trace_parse_common_type(sample->raw_data);
297 event = trace_find_event(type);
298 if (event)
299 evname = event->name;
300 } else
301 evname = __event_name(attr->type, attr->config);
302
303 printf("%s: ", evname ? evname : "(unknown)");
304 }
305 }
306
307 static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
308 {
309 if ((attr->type == PERF_TYPE_SOFTWARE) &&
310 ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
311 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
312 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
313 return true;
314
315 return false;
316 }
317
318 static void print_sample_addr(union perf_event *event,
319 struct perf_sample *sample,
320 struct machine *machine,
321 struct thread *thread,
322 struct perf_event_attr *attr)
323 {
324 struct addr_location al;
325 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
326 const char *symname, *dsoname;
327
328 printf("%16" PRIx64, sample->addr);
329
330 if (!sample_addr_correlates_sym(attr))
331 return;
332
333 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
334 sample->addr, &al);
335 if (!al.map)
336 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
337 sample->addr, &al);
338
339 al.cpu = sample->cpu;
340 al.sym = NULL;
341
342 if (al.map)
343 al.sym = map__find_symbol(al.map, al.addr, NULL);
344
345 if (PRINT_FIELD(SYM)) {
346 if (al.sym && al.sym->name)
347 symname = al.sym->name;
348 else
349 symname = "";
350
351 printf(" %16s", symname);
352 }
353
354 if (PRINT_FIELD(DSO)) {
355 if (al.map && al.map->dso && al.map->dso->name)
356 dsoname = al.map->dso->name;
357 else
358 dsoname = "";
359
360 printf(" (%s)", dsoname);
361 }
362 }
363
364 static void process_event(union perf_event *event __unused,
365 struct perf_sample *sample,
366 struct perf_evsel *evsel,
367 struct machine *machine,
368 struct thread *thread)
369 {
370 struct perf_event_attr *attr = &evsel->attr;
371
372 if (output[attr->type].fields == 0)
373 return;
374
375 print_sample_start(sample, thread, attr);
376
377 if (PRINT_FIELD(TRACE))
378 print_trace_event(sample->cpu, sample->raw_data,
379 sample->raw_size);
380
381 if (PRINT_FIELD(ADDR))
382 print_sample_addr(event, sample, machine, thread, attr);
383
384 if (PRINT_FIELD(IP)) {
385 if (!symbol_conf.use_callchain)
386 printf(" ");
387 else
388 printf("\n");
389 perf_event__print_ip(event, sample, machine, evsel,
390 PRINT_FIELD(SYM), PRINT_FIELD(DSO));
391 }
392
393 printf("\n");
394 }
395
396 static int default_start_script(const char *script __unused,
397 int argc __unused,
398 const char **argv __unused)
399 {
400 return 0;
401 }
402
403 static int default_stop_script(void)
404 {
405 return 0;
406 }
407
408 static int default_generate_script(const char *outfile __unused)
409 {
410 return 0;
411 }
412
413 static struct scripting_ops default_scripting_ops = {
414 .start_script = default_start_script,
415 .stop_script = default_stop_script,
416 .process_event = process_event,
417 .generate_script = default_generate_script,
418 };
419
420 static struct scripting_ops *scripting_ops;
421
422 static void setup_scripting(void)
423 {
424 setup_perl_scripting();
425 setup_python_scripting();
426
427 scripting_ops = &default_scripting_ops;
428 }
429
430 static int cleanup_scripting(void)
431 {
432 pr_debug("\nperf script stopped\n");
433
434 return scripting_ops->stop_script();
435 }
436
437 static const char *input_name;
438
439 static int process_sample_event(struct perf_tool *tool __used,
440 union perf_event *event,
441 struct perf_sample *sample,
442 struct perf_evsel *evsel,
443 struct machine *machine)
444 {
445 struct addr_location al;
446 struct thread *thread = machine__findnew_thread(machine, event->ip.tid);
447
448 if (thread == NULL) {
449 pr_debug("problem processing %d event, skipping it.\n",
450 event->header.type);
451 return -1;
452 }
453
454 if (debug_mode) {
455 if (sample->time < last_timestamp) {
456 pr_err("Samples misordered, previous: %" PRIu64
457 " this: %" PRIu64 "\n", last_timestamp,
458 sample->time);
459 nr_unordered++;
460 }
461 last_timestamp = sample->time;
462 return 0;
463 }
464
465 if (perf_event__preprocess_sample(event, machine, &al, sample, 0) < 0) {
466 pr_err("problem processing %d event, skipping it.\n",
467 event->header.type);
468 return -1;
469 }
470
471 if (al.filtered)
472 return 0;
473
474 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
475 return 0;
476
477 scripting_ops->process_event(event, sample, evsel, machine, thread);
478
479 evsel->hists.stats.total_period += sample->period;
480 return 0;
481 }
482
483 static struct perf_tool perf_script = {
484 .sample = process_sample_event,
485 .mmap = perf_event__process_mmap,
486 .comm = perf_event__process_comm,
487 .exit = perf_event__process_task,
488 .fork = perf_event__process_task,
489 .attr = perf_event__process_attr,
490 .event_type = perf_event__process_event_type,
491 .tracing_data = perf_event__process_tracing_data,
492 .build_id = perf_event__process_build_id,
493 .ordered_samples = true,
494 .ordering_requires_timestamps = true,
495 };
496
497 extern volatile int session_done;
498
499 static void sig_handler(int sig __unused)
500 {
501 session_done = 1;
502 }
503
504 static int __cmd_script(struct perf_session *session)
505 {
506 int ret;
507
508 signal(SIGINT, sig_handler);
509
510 ret = perf_session__process_events(session, &perf_script);
511
512 if (debug_mode)
513 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
514
515 return ret;
516 }
517
518 struct script_spec {
519 struct list_head node;
520 struct scripting_ops *ops;
521 char spec[0];
522 };
523
524 static LIST_HEAD(script_specs);
525
526 static struct script_spec *script_spec__new(const char *spec,
527 struct scripting_ops *ops)
528 {
529 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
530
531 if (s != NULL) {
532 strcpy(s->spec, spec);
533 s->ops = ops;
534 }
535
536 return s;
537 }
538
539 static void script_spec__add(struct script_spec *s)
540 {
541 list_add_tail(&s->node, &script_specs);
542 }
543
544 static struct script_spec *script_spec__find(const char *spec)
545 {
546 struct script_spec *s;
547
548 list_for_each_entry(s, &script_specs, node)
549 if (strcasecmp(s->spec, spec) == 0)
550 return s;
551 return NULL;
552 }
553
554 static struct script_spec *script_spec__findnew(const char *spec,
555 struct scripting_ops *ops)
556 {
557 struct script_spec *s = script_spec__find(spec);
558
559 if (s)
560 return s;
561
562 s = script_spec__new(spec, ops);
563 if (!s)
564 return NULL;
565
566 script_spec__add(s);
567
568 return s;
569 }
570
571 int script_spec_register(const char *spec, struct scripting_ops *ops)
572 {
573 struct script_spec *s;
574
575 s = script_spec__find(spec);
576 if (s)
577 return -1;
578
579 s = script_spec__findnew(spec, ops);
580 if (!s)
581 return -1;
582
583 return 0;
584 }
585
586 static struct scripting_ops *script_spec__lookup(const char *spec)
587 {
588 struct script_spec *s = script_spec__find(spec);
589 if (!s)
590 return NULL;
591
592 return s->ops;
593 }
594
595 static void list_available_languages(void)
596 {
597 struct script_spec *s;
598
599 fprintf(stderr, "\n");
600 fprintf(stderr, "Scripting language extensions (used in "
601 "perf script -s [spec:]script.[spec]):\n\n");
602
603 list_for_each_entry(s, &script_specs, node)
604 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
605
606 fprintf(stderr, "\n");
607 }
608
609 static int parse_scriptname(const struct option *opt __used,
610 const char *str, int unset __used)
611 {
612 char spec[PATH_MAX];
613 const char *script, *ext;
614 int len;
615
616 if (strcmp(str, "lang") == 0) {
617 list_available_languages();
618 exit(0);
619 }
620
621 script = strchr(str, ':');
622 if (script) {
623 len = script - str;
624 if (len >= PATH_MAX) {
625 fprintf(stderr, "invalid language specifier");
626 return -1;
627 }
628 strncpy(spec, str, len);
629 spec[len] = '\0';
630 scripting_ops = script_spec__lookup(spec);
631 if (!scripting_ops) {
632 fprintf(stderr, "invalid language specifier");
633 return -1;
634 }
635 script++;
636 } else {
637 script = str;
638 ext = strrchr(script, '.');
639 if (!ext) {
640 fprintf(stderr, "invalid script extension");
641 return -1;
642 }
643 scripting_ops = script_spec__lookup(++ext);
644 if (!scripting_ops) {
645 fprintf(stderr, "invalid script extension");
646 return -1;
647 }
648 }
649
650 script_name = strdup(script);
651
652 return 0;
653 }
654
655 static int parse_output_fields(const struct option *opt __used,
656 const char *arg, int unset __used)
657 {
658 char *tok;
659 int i, imax = sizeof(all_output_options) / sizeof(struct output_option);
660 int j;
661 int rc = 0;
662 char *str = strdup(arg);
663 int type = -1;
664
665 if (!str)
666 return -ENOMEM;
667
668 /* first word can state for which event type the user is specifying
669 * the fields. If no type exists, the specified fields apply to all
670 * event types found in the file minus the invalid fields for a type.
671 */
672 tok = strchr(str, ':');
673 if (tok) {
674 *tok = '\0';
675 tok++;
676 if (!strcmp(str, "hw"))
677 type = PERF_TYPE_HARDWARE;
678 else if (!strcmp(str, "sw"))
679 type = PERF_TYPE_SOFTWARE;
680 else if (!strcmp(str, "trace"))
681 type = PERF_TYPE_TRACEPOINT;
682 else if (!strcmp(str, "raw"))
683 type = PERF_TYPE_RAW;
684 else {
685 fprintf(stderr, "Invalid event type in field string.\n");
686 rc = -EINVAL;
687 goto out;
688 }
689
690 if (output[type].user_set)
691 pr_warning("Overriding previous field request for %s events.\n",
692 event_type(type));
693
694 output[type].fields = 0;
695 output[type].user_set = true;
696 output[type].wildcard_set = false;
697
698 } else {
699 tok = str;
700 if (strlen(str) == 0) {
701 fprintf(stderr,
702 "Cannot set fields to 'none' for all event types.\n");
703 rc = -EINVAL;
704 goto out;
705 }
706
707 if (output_set_by_user())
708 pr_warning("Overriding previous field request for all events.\n");
709
710 for (j = 0; j < PERF_TYPE_MAX; ++j) {
711 output[j].fields = 0;
712 output[j].user_set = true;
713 output[j].wildcard_set = true;
714 }
715 }
716
717 tok = strtok(tok, ",");
718 while (tok) {
719 for (i = 0; i < imax; ++i) {
720 if (strcmp(tok, all_output_options[i].str) == 0)
721 break;
722 }
723 if (i == imax) {
724 fprintf(stderr, "Invalid field requested.\n");
725 rc = -EINVAL;
726 goto out;
727 }
728
729 if (type == -1) {
730 /* add user option to all events types for
731 * which it is valid
732 */
733 for (j = 0; j < PERF_TYPE_MAX; ++j) {
734 if (output[j].invalid_fields & all_output_options[i].field) {
735 pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
736 all_output_options[i].str, event_type(j));
737 } else
738 output[j].fields |= all_output_options[i].field;
739 }
740 } else {
741 if (output[type].invalid_fields & all_output_options[i].field) {
742 fprintf(stderr, "\'%s\' not valid for %s events.\n",
743 all_output_options[i].str, event_type(type));
744
745 rc = -EINVAL;
746 goto out;
747 }
748 output[type].fields |= all_output_options[i].field;
749 }
750
751 tok = strtok(NULL, ",");
752 }
753
754 if (type >= 0) {
755 if (output[type].fields == 0) {
756 pr_debug("No fields requested for %s type. "
757 "Events will not be displayed.\n", event_type(type));
758 }
759 }
760
761 out:
762 free(str);
763 return rc;
764 }
765
766 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
767 static int is_directory(const char *base_path, const struct dirent *dent)
768 {
769 char path[PATH_MAX];
770 struct stat st;
771
772 sprintf(path, "%s/%s", base_path, dent->d_name);
773 if (stat(path, &st))
774 return 0;
775
776 return S_ISDIR(st.st_mode);
777 }
778
779 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
780 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
781 lang_next) \
782 if ((lang_dirent.d_type == DT_DIR || \
783 (lang_dirent.d_type == DT_UNKNOWN && \
784 is_directory(scripts_path, &lang_dirent))) && \
785 (strcmp(lang_dirent.d_name, ".")) && \
786 (strcmp(lang_dirent.d_name, "..")))
787
788 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
789 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
790 script_next) \
791 if (script_dirent.d_type != DT_DIR && \
792 (script_dirent.d_type != DT_UNKNOWN || \
793 !is_directory(lang_path, &script_dirent)))
794
795
796 #define RECORD_SUFFIX "-record"
797 #define REPORT_SUFFIX "-report"
798
799 struct script_desc {
800 struct list_head node;
801 char *name;
802 char *half_liner;
803 char *args;
804 };
805
806 static LIST_HEAD(script_descs);
807
808 static struct script_desc *script_desc__new(const char *name)
809 {
810 struct script_desc *s = zalloc(sizeof(*s));
811
812 if (s != NULL && name)
813 s->name = strdup(name);
814
815 return s;
816 }
817
818 static void script_desc__delete(struct script_desc *s)
819 {
820 free(s->name);
821 free(s->half_liner);
822 free(s->args);
823 free(s);
824 }
825
826 static void script_desc__add(struct script_desc *s)
827 {
828 list_add_tail(&s->node, &script_descs);
829 }
830
831 static struct script_desc *script_desc__find(const char *name)
832 {
833 struct script_desc *s;
834
835 list_for_each_entry(s, &script_descs, node)
836 if (strcasecmp(s->name, name) == 0)
837 return s;
838 return NULL;
839 }
840
841 static struct script_desc *script_desc__findnew(const char *name)
842 {
843 struct script_desc *s = script_desc__find(name);
844
845 if (s)
846 return s;
847
848 s = script_desc__new(name);
849 if (!s)
850 goto out_delete_desc;
851
852 script_desc__add(s);
853
854 return s;
855
856 out_delete_desc:
857 script_desc__delete(s);
858
859 return NULL;
860 }
861
862 static const char *ends_with(const char *str, const char *suffix)
863 {
864 size_t suffix_len = strlen(suffix);
865 const char *p = str;
866
867 if (strlen(str) > suffix_len) {
868 p = str + strlen(str) - suffix_len;
869 if (!strncmp(p, suffix, suffix_len))
870 return p;
871 }
872
873 return NULL;
874 }
875
876 static char *ltrim(char *str)
877 {
878 int len = strlen(str);
879
880 while (len && isspace(*str)) {
881 len--;
882 str++;
883 }
884
885 return str;
886 }
887
888 static int read_script_info(struct script_desc *desc, const char *filename)
889 {
890 char line[BUFSIZ], *p;
891 FILE *fp;
892
893 fp = fopen(filename, "r");
894 if (!fp)
895 return -1;
896
897 while (fgets(line, sizeof(line), fp)) {
898 p = ltrim(line);
899 if (strlen(p) == 0)
900 continue;
901 if (*p != '#')
902 continue;
903 p++;
904 if (strlen(p) && *p == '!')
905 continue;
906
907 p = ltrim(p);
908 if (strlen(p) && p[strlen(p) - 1] == '\n')
909 p[strlen(p) - 1] = '\0';
910
911 if (!strncmp(p, "description:", strlen("description:"))) {
912 p += strlen("description:");
913 desc->half_liner = strdup(ltrim(p));
914 continue;
915 }
916
917 if (!strncmp(p, "args:", strlen("args:"))) {
918 p += strlen("args:");
919 desc->args = strdup(ltrim(p));
920 continue;
921 }
922 }
923
924 fclose(fp);
925
926 return 0;
927 }
928
929 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
930 {
931 char *script_root, *str;
932
933 script_root = strdup(script_dirent->d_name);
934 if (!script_root)
935 return NULL;
936
937 str = (char *)ends_with(script_root, suffix);
938 if (!str) {
939 free(script_root);
940 return NULL;
941 }
942
943 *str = '\0';
944 return script_root;
945 }
946
947 static int list_available_scripts(const struct option *opt __used,
948 const char *s __used, int unset __used)
949 {
950 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
951 char scripts_path[MAXPATHLEN];
952 DIR *scripts_dir, *lang_dir;
953 char script_path[MAXPATHLEN];
954 char lang_path[MAXPATHLEN];
955 struct script_desc *desc;
956 char first_half[BUFSIZ];
957 char *script_root;
958
959 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
960
961 scripts_dir = opendir(scripts_path);
962 if (!scripts_dir)
963 return -1;
964
965 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
966 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
967 lang_dirent.d_name);
968 lang_dir = opendir(lang_path);
969 if (!lang_dir)
970 continue;
971
972 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
973 script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
974 if (script_root) {
975 desc = script_desc__findnew(script_root);
976 snprintf(script_path, MAXPATHLEN, "%s/%s",
977 lang_path, script_dirent.d_name);
978 read_script_info(desc, script_path);
979 free(script_root);
980 }
981 }
982 }
983
984 fprintf(stdout, "List of available trace scripts:\n");
985 list_for_each_entry(desc, &script_descs, node) {
986 sprintf(first_half, "%s %s", desc->name,
987 desc->args ? desc->args : "");
988 fprintf(stdout, " %-36s %s\n", first_half,
989 desc->half_liner ? desc->half_liner : "");
990 }
991
992 exit(0);
993 }
994
995 static char *get_script_path(const char *script_root, const char *suffix)
996 {
997 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
998 char scripts_path[MAXPATHLEN];
999 char script_path[MAXPATHLEN];
1000 DIR *scripts_dir, *lang_dir;
1001 char lang_path[MAXPATHLEN];
1002 char *__script_root;
1003
1004 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1005
1006 scripts_dir = opendir(scripts_path);
1007 if (!scripts_dir)
1008 return NULL;
1009
1010 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1011 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1012 lang_dirent.d_name);
1013 lang_dir = opendir(lang_path);
1014 if (!lang_dir)
1015 continue;
1016
1017 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1018 __script_root = get_script_root(&script_dirent, suffix);
1019 if (__script_root && !strcmp(script_root, __script_root)) {
1020 free(__script_root);
1021 closedir(lang_dir);
1022 closedir(scripts_dir);
1023 snprintf(script_path, MAXPATHLEN, "%s/%s",
1024 lang_path, script_dirent.d_name);
1025 return strdup(script_path);
1026 }
1027 free(__script_root);
1028 }
1029 closedir(lang_dir);
1030 }
1031 closedir(scripts_dir);
1032
1033 return NULL;
1034 }
1035
1036 static bool is_top_script(const char *script_path)
1037 {
1038 return ends_with(script_path, "top") == NULL ? false : true;
1039 }
1040
1041 static int has_required_arg(char *script_path)
1042 {
1043 struct script_desc *desc;
1044 int n_args = 0;
1045 char *p;
1046
1047 desc = script_desc__new(NULL);
1048
1049 if (read_script_info(desc, script_path))
1050 goto out;
1051
1052 if (!desc->args)
1053 goto out;
1054
1055 for (p = desc->args; *p; p++)
1056 if (*p == '<')
1057 n_args++;
1058 out:
1059 script_desc__delete(desc);
1060
1061 return n_args;
1062 }
1063
1064 static const char * const script_usage[] = {
1065 "perf script [<options>]",
1066 "perf script [<options>] record <script> [<record-options>] <command>",
1067 "perf script [<options>] report <script> [script-args]",
1068 "perf script [<options>] <script> [<record-options>] <command>",
1069 "perf script [<options>] <top-script> [script-args]",
1070 NULL
1071 };
1072
1073 static const struct option options[] = {
1074 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1075 "dump raw trace in ASCII"),
1076 OPT_INCR('v', "verbose", &verbose,
1077 "be more verbose (show symbol address, etc)"),
1078 OPT_BOOLEAN('L', "Latency", &latency_format,
1079 "show latency attributes (irqs/preemption disabled, etc)"),
1080 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1081 list_available_scripts),
1082 OPT_CALLBACK('s', "script", NULL, "name",
1083 "script file name (lang:script name, script name, or *)",
1084 parse_scriptname),
1085 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1086 "generate perf-script.xx script in specified language"),
1087 OPT_STRING('i', "input", &input_name, "file",
1088 "input file name"),
1089 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1090 "do various checks like samples ordering and lost events"),
1091 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1092 "file", "vmlinux pathname"),
1093 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1094 "file", "kallsyms pathname"),
1095 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1096 "When printing symbols do not display call chain"),
1097 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1098 "Look for files with symbols relative to this directory"),
1099 OPT_CALLBACK('f', "fields", NULL, "str",
1100 "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr",
1101 parse_output_fields),
1102 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1103 "system-wide collection from all CPUs"),
1104 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1105 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1106 "only display events for these comms"),
1107 OPT_BOOLEAN('I', "show-info", &show_full_info,
1108 "display extended information from perf.data file"),
1109 OPT_END()
1110 };
1111
1112 static bool have_cmd(int argc, const char **argv)
1113 {
1114 char **__argv = malloc(sizeof(const char *) * argc);
1115
1116 if (!__argv)
1117 die("malloc");
1118 memcpy(__argv, argv, sizeof(const char *) * argc);
1119 argc = parse_options(argc, (const char **)__argv, record_options,
1120 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1121 free(__argv);
1122
1123 return argc != 0;
1124 }
1125
1126 int cmd_script(int argc, const char **argv, const char *prefix __used)
1127 {
1128 char *rec_script_path = NULL;
1129 char *rep_script_path = NULL;
1130 struct perf_session *session;
1131 char *script_path = NULL;
1132 const char **__argv;
1133 int i, j, err;
1134
1135 setup_scripting();
1136
1137 argc = parse_options(argc, argv, options, script_usage,
1138 PARSE_OPT_STOP_AT_NON_OPTION);
1139
1140 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1141 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1142 if (!rec_script_path)
1143 return cmd_record(argc, argv, NULL);
1144 }
1145
1146 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1147 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1148 if (!rep_script_path) {
1149 fprintf(stderr,
1150 "Please specify a valid report script"
1151 "(see 'perf script -l' for listing)\n");
1152 return -1;
1153 }
1154 }
1155
1156 /* make sure PERF_EXEC_PATH is set for scripts */
1157 perf_set_argv_exec_path(perf_exec_path());
1158
1159 if (argc && !script_name && !rec_script_path && !rep_script_path) {
1160 int live_pipe[2];
1161 int rep_args;
1162 pid_t pid;
1163
1164 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1165 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1166
1167 if (!rec_script_path && !rep_script_path) {
1168 fprintf(stderr, " Couldn't find script %s\n\n See perf"
1169 " script -l for available scripts.\n", argv[0]);
1170 usage_with_options(script_usage, options);
1171 }
1172
1173 if (is_top_script(argv[0])) {
1174 rep_args = argc - 1;
1175 } else {
1176 int rec_args;
1177
1178 rep_args = has_required_arg(rep_script_path);
1179 rec_args = (argc - 1) - rep_args;
1180 if (rec_args < 0) {
1181 fprintf(stderr, " %s script requires options."
1182 "\n\n See perf script -l for available "
1183 "scripts and options.\n", argv[0]);
1184 usage_with_options(script_usage, options);
1185 }
1186 }
1187
1188 if (pipe(live_pipe) < 0) {
1189 perror("failed to create pipe");
1190 exit(-1);
1191 }
1192
1193 pid = fork();
1194 if (pid < 0) {
1195 perror("failed to fork");
1196 exit(-1);
1197 }
1198
1199 if (!pid) {
1200 j = 0;
1201
1202 dup2(live_pipe[1], 1);
1203 close(live_pipe[0]);
1204
1205 if (is_top_script(argv[0])) {
1206 system_wide = true;
1207 } else if (!system_wide) {
1208 system_wide = !have_cmd(argc - rep_args,
1209 &argv[rep_args]);
1210 }
1211
1212 __argv = malloc((argc + 6) * sizeof(const char *));
1213 if (!__argv)
1214 die("malloc");
1215
1216 __argv[j++] = "/bin/sh";
1217 __argv[j++] = rec_script_path;
1218 if (system_wide)
1219 __argv[j++] = "-a";
1220 __argv[j++] = "-q";
1221 __argv[j++] = "-o";
1222 __argv[j++] = "-";
1223 for (i = rep_args + 1; i < argc; i++)
1224 __argv[j++] = argv[i];
1225 __argv[j++] = NULL;
1226
1227 execvp("/bin/sh", (char **)__argv);
1228 free(__argv);
1229 exit(-1);
1230 }
1231
1232 dup2(live_pipe[0], 0);
1233 close(live_pipe[1]);
1234
1235 __argv = malloc((argc + 4) * sizeof(const char *));
1236 if (!__argv)
1237 die("malloc");
1238 j = 0;
1239 __argv[j++] = "/bin/sh";
1240 __argv[j++] = rep_script_path;
1241 for (i = 1; i < rep_args + 1; i++)
1242 __argv[j++] = argv[i];
1243 __argv[j++] = "-i";
1244 __argv[j++] = "-";
1245 __argv[j++] = NULL;
1246
1247 execvp("/bin/sh", (char **)__argv);
1248 free(__argv);
1249 exit(-1);
1250 }
1251
1252 if (rec_script_path)
1253 script_path = rec_script_path;
1254 if (rep_script_path)
1255 script_path = rep_script_path;
1256
1257 if (script_path) {
1258 j = 0;
1259
1260 if (!rec_script_path)
1261 system_wide = false;
1262 else if (!system_wide)
1263 system_wide = !have_cmd(argc - 1, &argv[1]);
1264
1265 __argv = malloc((argc + 2) * sizeof(const char *));
1266 if (!__argv)
1267 die("malloc");
1268 __argv[j++] = "/bin/sh";
1269 __argv[j++] = script_path;
1270 if (system_wide)
1271 __argv[j++] = "-a";
1272 for (i = 2; i < argc; i++)
1273 __argv[j++] = argv[i];
1274 __argv[j++] = NULL;
1275
1276 execvp("/bin/sh", (char **)__argv);
1277 free(__argv);
1278 exit(-1);
1279 }
1280
1281 if (symbol__init() < 0)
1282 return -1;
1283 if (!script_name)
1284 setup_pager();
1285
1286 session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_script);
1287 if (session == NULL)
1288 return -ENOMEM;
1289
1290 if (cpu_list) {
1291 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
1292 return -1;
1293 }
1294
1295 perf_session__fprintf_info(session, stdout, show_full_info);
1296
1297 if (!no_callchain)
1298 symbol_conf.use_callchain = true;
1299 else
1300 symbol_conf.use_callchain = false;
1301
1302 if (generate_script_lang) {
1303 struct stat perf_stat;
1304 int input;
1305
1306 if (output_set_by_user()) {
1307 fprintf(stderr,
1308 "custom fields not supported for generated scripts");
1309 return -1;
1310 }
1311
1312 input = open(session->filename, O_RDONLY); /* input_name */
1313 if (input < 0) {
1314 perror("failed to open file");
1315 exit(-1);
1316 }
1317
1318 err = fstat(input, &perf_stat);
1319 if (err < 0) {
1320 perror("failed to stat file");
1321 exit(-1);
1322 }
1323
1324 if (!perf_stat.st_size) {
1325 fprintf(stderr, "zero-sized file, nothing to do!\n");
1326 exit(0);
1327 }
1328
1329 scripting_ops = script_spec__lookup(generate_script_lang);
1330 if (!scripting_ops) {
1331 fprintf(stderr, "invalid language specifier");
1332 return -1;
1333 }
1334
1335 err = scripting_ops->generate_script("perf-script");
1336 goto out;
1337 }
1338
1339 if (script_name) {
1340 err = scripting_ops->start_script(script_name, argc, argv);
1341 if (err)
1342 goto out;
1343 pr_debug("perf script started with script %s\n\n", script_name);
1344 }
1345
1346
1347 err = perf_session__check_output_opt(session);
1348 if (err < 0)
1349 goto out;
1350
1351 err = __cmd_script(session);
1352
1353 perf_session__delete(session);
1354 cleanup_scripting();
1355 out:
1356 return err;
1357 }