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x86: Move call to print_modules() out of show_regs()
[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 <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 PERF_OUTPUT_SYMOFFSET = 1U << 11,
44 };
45
46 struct output_option {
47 const char *str;
48 enum perf_output_field field;
49 } all_output_options[] = {
50 {.str = "comm", .field = PERF_OUTPUT_COMM},
51 {.str = "tid", .field = PERF_OUTPUT_TID},
52 {.str = "pid", .field = PERF_OUTPUT_PID},
53 {.str = "time", .field = PERF_OUTPUT_TIME},
54 {.str = "cpu", .field = PERF_OUTPUT_CPU},
55 {.str = "event", .field = PERF_OUTPUT_EVNAME},
56 {.str = "trace", .field = PERF_OUTPUT_TRACE},
57 {.str = "ip", .field = PERF_OUTPUT_IP},
58 {.str = "sym", .field = PERF_OUTPUT_SYM},
59 {.str = "dso", .field = PERF_OUTPUT_DSO},
60 {.str = "addr", .field = PERF_OUTPUT_ADDR},
61 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
62 };
63
64 /* default set to maintain compatibility with current format */
65 static struct {
66 bool user_set;
67 bool wildcard_set;
68 u64 fields;
69 u64 invalid_fields;
70 } output[PERF_TYPE_MAX] = {
71
72 [PERF_TYPE_HARDWARE] = {
73 .user_set = false,
74
75 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
76 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
77 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
78 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
79
80 .invalid_fields = PERF_OUTPUT_TRACE,
81 },
82
83 [PERF_TYPE_SOFTWARE] = {
84 .user_set = false,
85
86 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
87 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
88 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
89 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
90
91 .invalid_fields = PERF_OUTPUT_TRACE,
92 },
93
94 [PERF_TYPE_TRACEPOINT] = {
95 .user_set = false,
96
97 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
98 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
99 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
100 },
101
102 [PERF_TYPE_RAW] = {
103 .user_set = false,
104
105 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
106 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
107 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
108 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
109
110 .invalid_fields = PERF_OUTPUT_TRACE,
111 },
112 };
113
114 static bool output_set_by_user(void)
115 {
116 int j;
117 for (j = 0; j < PERF_TYPE_MAX; ++j) {
118 if (output[j].user_set)
119 return true;
120 }
121 return false;
122 }
123
124 static const char *output_field2str(enum perf_output_field field)
125 {
126 int i, imax = ARRAY_SIZE(all_output_options);
127 const char *str = "";
128
129 for (i = 0; i < imax; ++i) {
130 if (all_output_options[i].field == field) {
131 str = all_output_options[i].str;
132 break;
133 }
134 }
135 return str;
136 }
137
138 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
139
140 static int perf_event_attr__check_stype(struct perf_event_attr *attr,
141 u64 sample_type, const char *sample_msg,
142 enum perf_output_field field)
143 {
144 int type = attr->type;
145 const char *evname;
146
147 if (attr->sample_type & sample_type)
148 return 0;
149
150 if (output[type].user_set) {
151 evname = __event_name(attr->type, attr->config);
152 pr_err("Samples for '%s' event do not have %s attribute set. "
153 "Cannot print '%s' field.\n",
154 evname, sample_msg, output_field2str(field));
155 return -1;
156 }
157
158 /* user did not ask for it explicitly so remove from the default list */
159 output[type].fields &= ~field;
160 evname = __event_name(attr->type, attr->config);
161 pr_debug("Samples for '%s' event do not have %s attribute set. "
162 "Skipping '%s' field.\n",
163 evname, sample_msg, output_field2str(field));
164
165 return 0;
166 }
167
168 static int perf_evsel__check_attr(struct perf_evsel *evsel,
169 struct perf_session *session)
170 {
171 struct perf_event_attr *attr = &evsel->attr;
172
173 if (PRINT_FIELD(TRACE) &&
174 !perf_session__has_traces(session, "record -R"))
175 return -EINVAL;
176
177 if (PRINT_FIELD(IP)) {
178 if (perf_event_attr__check_stype(attr, PERF_SAMPLE_IP, "IP",
179 PERF_OUTPUT_IP))
180 return -EINVAL;
181
182 if (!no_callchain &&
183 !(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
184 symbol_conf.use_callchain = false;
185 }
186
187 if (PRINT_FIELD(ADDR) &&
188 perf_event_attr__check_stype(attr, PERF_SAMPLE_ADDR, "ADDR",
189 PERF_OUTPUT_ADDR))
190 return -EINVAL;
191
192 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
193 pr_err("Display of symbols requested but neither sample IP nor "
194 "sample address\nis selected. Hence, no addresses to convert "
195 "to symbols.\n");
196 return -EINVAL;
197 }
198 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
199 pr_err("Display of offsets requested but symbol is not"
200 "selected.\n");
201 return -EINVAL;
202 }
203 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
204 pr_err("Display of DSO requested but neither sample IP nor "
205 "sample address\nis selected. Hence, no addresses to convert "
206 "to DSO.\n");
207 return -EINVAL;
208 }
209
210 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
211 perf_event_attr__check_stype(attr, PERF_SAMPLE_TID, "TID",
212 PERF_OUTPUT_TID|PERF_OUTPUT_PID))
213 return -EINVAL;
214
215 if (PRINT_FIELD(TIME) &&
216 perf_event_attr__check_stype(attr, PERF_SAMPLE_TIME, "TIME",
217 PERF_OUTPUT_TIME))
218 return -EINVAL;
219
220 if (PRINT_FIELD(CPU) &&
221 perf_event_attr__check_stype(attr, PERF_SAMPLE_CPU, "CPU",
222 PERF_OUTPUT_CPU))
223 return -EINVAL;
224
225 return 0;
226 }
227
228 /*
229 * verify all user requested events exist and the samples
230 * have the expected data
231 */
232 static int perf_session__check_output_opt(struct perf_session *session)
233 {
234 int j;
235 struct perf_evsel *evsel;
236
237 for (j = 0; j < PERF_TYPE_MAX; ++j) {
238 evsel = perf_session__find_first_evtype(session, j);
239
240 /*
241 * even if fields is set to 0 (ie., show nothing) event must
242 * exist if user explicitly includes it on the command line
243 */
244 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
245 pr_err("%s events do not exist. "
246 "Remove corresponding -f option to proceed.\n",
247 event_type(j));
248 return -1;
249 }
250
251 if (evsel && output[j].fields &&
252 perf_evsel__check_attr(evsel, session))
253 return -1;
254 }
255
256 return 0;
257 }
258
259 static void print_sample_start(struct perf_sample *sample,
260 struct thread *thread,
261 struct perf_event_attr *attr)
262 {
263 int type;
264 struct event_format *event;
265 const char *evname = NULL;
266 unsigned long secs;
267 unsigned long usecs;
268 unsigned long long nsecs;
269
270 if (PRINT_FIELD(COMM)) {
271 if (latency_format)
272 printf("%8.8s ", thread->comm);
273 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
274 printf("%s ", thread->comm);
275 else
276 printf("%16s ", thread->comm);
277 }
278
279 if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
280 printf("%5d/%-5d ", sample->pid, sample->tid);
281 else if (PRINT_FIELD(PID))
282 printf("%5d ", sample->pid);
283 else if (PRINT_FIELD(TID))
284 printf("%5d ", sample->tid);
285
286 if (PRINT_FIELD(CPU)) {
287 if (latency_format)
288 printf("%3d ", sample->cpu);
289 else
290 printf("[%03d] ", sample->cpu);
291 }
292
293 if (PRINT_FIELD(TIME)) {
294 nsecs = sample->time;
295 secs = nsecs / NSECS_PER_SEC;
296 nsecs -= secs * NSECS_PER_SEC;
297 usecs = nsecs / NSECS_PER_USEC;
298 printf("%5lu.%06lu: ", secs, usecs);
299 }
300
301 if (PRINT_FIELD(EVNAME)) {
302 if (attr->type == PERF_TYPE_TRACEPOINT) {
303 type = trace_parse_common_type(sample->raw_data);
304 event = trace_find_event(type);
305 if (event)
306 evname = event->name;
307 } else
308 evname = __event_name(attr->type, attr->config);
309
310 printf("%s: ", evname ? evname : "[unknown]");
311 }
312 }
313
314 static bool is_bts_event(struct perf_event_attr *attr)
315 {
316 return ((attr->type == PERF_TYPE_HARDWARE) &&
317 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
318 (attr->sample_period == 1));
319 }
320
321 static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
322 {
323 if ((attr->type == PERF_TYPE_SOFTWARE) &&
324 ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
325 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
326 (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
327 return true;
328
329 if (is_bts_event(attr))
330 return true;
331
332 return false;
333 }
334
335 static void print_sample_addr(union perf_event *event,
336 struct perf_sample *sample,
337 struct machine *machine,
338 struct thread *thread,
339 struct perf_event_attr *attr)
340 {
341 struct addr_location al;
342 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
343
344 printf("%16" PRIx64, sample->addr);
345
346 if (!sample_addr_correlates_sym(attr))
347 return;
348
349 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
350 sample->addr, &al);
351 if (!al.map)
352 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
353 sample->addr, &al);
354
355 al.cpu = sample->cpu;
356 al.sym = NULL;
357
358 if (al.map)
359 al.sym = map__find_symbol(al.map, al.addr, NULL);
360
361 if (PRINT_FIELD(SYM)) {
362 printf(" ");
363 if (PRINT_FIELD(SYMOFFSET))
364 symbol__fprintf_symname_offs(al.sym, &al, stdout);
365 else
366 symbol__fprintf_symname(al.sym, stdout);
367 }
368
369 if (PRINT_FIELD(DSO)) {
370 printf(" (");
371 map__fprintf_dsoname(al.map, stdout);
372 printf(")");
373 }
374 }
375
376 static void print_sample_bts(union perf_event *event,
377 struct perf_sample *sample,
378 struct perf_evsel *evsel,
379 struct machine *machine,
380 struct thread *thread)
381 {
382 struct perf_event_attr *attr = &evsel->attr;
383
384 /* print branch_from information */
385 if (PRINT_FIELD(IP)) {
386 if (!symbol_conf.use_callchain)
387 printf(" ");
388 else
389 printf("\n");
390 perf_event__print_ip(event, sample, machine, evsel,
391 PRINT_FIELD(SYM), PRINT_FIELD(DSO),
392 PRINT_FIELD(SYMOFFSET));
393 }
394
395 printf(" => ");
396
397 /* print branch_to information */
398 if (PRINT_FIELD(ADDR))
399 print_sample_addr(event, sample, machine, thread, attr);
400
401 printf("\n");
402 }
403
404 static void process_event(union perf_event *event __unused,
405 struct perf_sample *sample,
406 struct perf_evsel *evsel,
407 struct machine *machine,
408 struct thread *thread)
409 {
410 struct perf_event_attr *attr = &evsel->attr;
411
412 if (output[attr->type].fields == 0)
413 return;
414
415 print_sample_start(sample, thread, attr);
416
417 if (is_bts_event(attr)) {
418 print_sample_bts(event, sample, evsel, machine, thread);
419 return;
420 }
421
422 if (PRINT_FIELD(TRACE))
423 print_trace_event(sample->cpu, sample->raw_data,
424 sample->raw_size);
425
426 if (PRINT_FIELD(ADDR))
427 print_sample_addr(event, sample, machine, thread, attr);
428
429 if (PRINT_FIELD(IP)) {
430 if (!symbol_conf.use_callchain)
431 printf(" ");
432 else
433 printf("\n");
434 perf_event__print_ip(event, sample, machine, evsel,
435 PRINT_FIELD(SYM), PRINT_FIELD(DSO),
436 PRINT_FIELD(SYMOFFSET));
437 }
438
439 printf("\n");
440 }
441
442 static int default_start_script(const char *script __unused,
443 int argc __unused,
444 const char **argv __unused)
445 {
446 return 0;
447 }
448
449 static int default_stop_script(void)
450 {
451 return 0;
452 }
453
454 static int default_generate_script(const char *outfile __unused)
455 {
456 return 0;
457 }
458
459 static struct scripting_ops default_scripting_ops = {
460 .start_script = default_start_script,
461 .stop_script = default_stop_script,
462 .process_event = process_event,
463 .generate_script = default_generate_script,
464 };
465
466 static struct scripting_ops *scripting_ops;
467
468 static void setup_scripting(void)
469 {
470 setup_perl_scripting();
471 setup_python_scripting();
472
473 scripting_ops = &default_scripting_ops;
474 }
475
476 static int cleanup_scripting(void)
477 {
478 pr_debug("\nperf script stopped\n");
479
480 return scripting_ops->stop_script();
481 }
482
483 static const char *input_name;
484
485 static int process_sample_event(struct perf_tool *tool __used,
486 union perf_event *event,
487 struct perf_sample *sample,
488 struct perf_evsel *evsel,
489 struct machine *machine)
490 {
491 struct addr_location al;
492 struct thread *thread = machine__findnew_thread(machine, event->ip.tid);
493
494 if (thread == NULL) {
495 pr_debug("problem processing %d event, skipping it.\n",
496 event->header.type);
497 return -1;
498 }
499
500 if (debug_mode) {
501 if (sample->time < last_timestamp) {
502 pr_err("Samples misordered, previous: %" PRIu64
503 " this: %" PRIu64 "\n", last_timestamp,
504 sample->time);
505 nr_unordered++;
506 }
507 last_timestamp = sample->time;
508 return 0;
509 }
510
511 if (perf_event__preprocess_sample(event, machine, &al, sample, 0) < 0) {
512 pr_err("problem processing %d event, skipping it.\n",
513 event->header.type);
514 return -1;
515 }
516
517 if (al.filtered)
518 return 0;
519
520 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
521 return 0;
522
523 scripting_ops->process_event(event, sample, evsel, machine, thread);
524
525 evsel->hists.stats.total_period += sample->period;
526 return 0;
527 }
528
529 static struct perf_tool perf_script = {
530 .sample = process_sample_event,
531 .mmap = perf_event__process_mmap,
532 .comm = perf_event__process_comm,
533 .exit = perf_event__process_task,
534 .fork = perf_event__process_task,
535 .attr = perf_event__process_attr,
536 .event_type = perf_event__process_event_type,
537 .tracing_data = perf_event__process_tracing_data,
538 .build_id = perf_event__process_build_id,
539 .ordered_samples = true,
540 .ordering_requires_timestamps = true,
541 };
542
543 extern volatile int session_done;
544
545 static void sig_handler(int sig __unused)
546 {
547 session_done = 1;
548 }
549
550 static int __cmd_script(struct perf_session *session)
551 {
552 int ret;
553
554 signal(SIGINT, sig_handler);
555
556 ret = perf_session__process_events(session, &perf_script);
557
558 if (debug_mode)
559 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
560
561 return ret;
562 }
563
564 struct script_spec {
565 struct list_head node;
566 struct scripting_ops *ops;
567 char spec[0];
568 };
569
570 static LIST_HEAD(script_specs);
571
572 static struct script_spec *script_spec__new(const char *spec,
573 struct scripting_ops *ops)
574 {
575 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
576
577 if (s != NULL) {
578 strcpy(s->spec, spec);
579 s->ops = ops;
580 }
581
582 return s;
583 }
584
585 static void script_spec__add(struct script_spec *s)
586 {
587 list_add_tail(&s->node, &script_specs);
588 }
589
590 static struct script_spec *script_spec__find(const char *spec)
591 {
592 struct script_spec *s;
593
594 list_for_each_entry(s, &script_specs, node)
595 if (strcasecmp(s->spec, spec) == 0)
596 return s;
597 return NULL;
598 }
599
600 static struct script_spec *script_spec__findnew(const char *spec,
601 struct scripting_ops *ops)
602 {
603 struct script_spec *s = script_spec__find(spec);
604
605 if (s)
606 return s;
607
608 s = script_spec__new(spec, ops);
609 if (!s)
610 return NULL;
611
612 script_spec__add(s);
613
614 return s;
615 }
616
617 int script_spec_register(const char *spec, struct scripting_ops *ops)
618 {
619 struct script_spec *s;
620
621 s = script_spec__find(spec);
622 if (s)
623 return -1;
624
625 s = script_spec__findnew(spec, ops);
626 if (!s)
627 return -1;
628
629 return 0;
630 }
631
632 static struct scripting_ops *script_spec__lookup(const char *spec)
633 {
634 struct script_spec *s = script_spec__find(spec);
635 if (!s)
636 return NULL;
637
638 return s->ops;
639 }
640
641 static void list_available_languages(void)
642 {
643 struct script_spec *s;
644
645 fprintf(stderr, "\n");
646 fprintf(stderr, "Scripting language extensions (used in "
647 "perf script -s [spec:]script.[spec]):\n\n");
648
649 list_for_each_entry(s, &script_specs, node)
650 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
651
652 fprintf(stderr, "\n");
653 }
654
655 static int parse_scriptname(const struct option *opt __used,
656 const char *str, int unset __used)
657 {
658 char spec[PATH_MAX];
659 const char *script, *ext;
660 int len;
661
662 if (strcmp(str, "lang") == 0) {
663 list_available_languages();
664 exit(0);
665 }
666
667 script = strchr(str, ':');
668 if (script) {
669 len = script - str;
670 if (len >= PATH_MAX) {
671 fprintf(stderr, "invalid language specifier");
672 return -1;
673 }
674 strncpy(spec, str, len);
675 spec[len] = '\0';
676 scripting_ops = script_spec__lookup(spec);
677 if (!scripting_ops) {
678 fprintf(stderr, "invalid language specifier");
679 return -1;
680 }
681 script++;
682 } else {
683 script = str;
684 ext = strrchr(script, '.');
685 if (!ext) {
686 fprintf(stderr, "invalid script extension");
687 return -1;
688 }
689 scripting_ops = script_spec__lookup(++ext);
690 if (!scripting_ops) {
691 fprintf(stderr, "invalid script extension");
692 return -1;
693 }
694 }
695
696 script_name = strdup(script);
697
698 return 0;
699 }
700
701 static int parse_output_fields(const struct option *opt __used,
702 const char *arg, int unset __used)
703 {
704 char *tok;
705 int i, imax = sizeof(all_output_options) / sizeof(struct output_option);
706 int j;
707 int rc = 0;
708 char *str = strdup(arg);
709 int type = -1;
710
711 if (!str)
712 return -ENOMEM;
713
714 /* first word can state for which event type the user is specifying
715 * the fields. If no type exists, the specified fields apply to all
716 * event types found in the file minus the invalid fields for a type.
717 */
718 tok = strchr(str, ':');
719 if (tok) {
720 *tok = '\0';
721 tok++;
722 if (!strcmp(str, "hw"))
723 type = PERF_TYPE_HARDWARE;
724 else if (!strcmp(str, "sw"))
725 type = PERF_TYPE_SOFTWARE;
726 else if (!strcmp(str, "trace"))
727 type = PERF_TYPE_TRACEPOINT;
728 else if (!strcmp(str, "raw"))
729 type = PERF_TYPE_RAW;
730 else {
731 fprintf(stderr, "Invalid event type in field string.\n");
732 rc = -EINVAL;
733 goto out;
734 }
735
736 if (output[type].user_set)
737 pr_warning("Overriding previous field request for %s events.\n",
738 event_type(type));
739
740 output[type].fields = 0;
741 output[type].user_set = true;
742 output[type].wildcard_set = false;
743
744 } else {
745 tok = str;
746 if (strlen(str) == 0) {
747 fprintf(stderr,
748 "Cannot set fields to 'none' for all event types.\n");
749 rc = -EINVAL;
750 goto out;
751 }
752
753 if (output_set_by_user())
754 pr_warning("Overriding previous field request for all events.\n");
755
756 for (j = 0; j < PERF_TYPE_MAX; ++j) {
757 output[j].fields = 0;
758 output[j].user_set = true;
759 output[j].wildcard_set = true;
760 }
761 }
762
763 tok = strtok(tok, ",");
764 while (tok) {
765 for (i = 0; i < imax; ++i) {
766 if (strcmp(tok, all_output_options[i].str) == 0)
767 break;
768 }
769 if (i == imax) {
770 fprintf(stderr, "Invalid field requested.\n");
771 rc = -EINVAL;
772 goto out;
773 }
774
775 if (type == -1) {
776 /* add user option to all events types for
777 * which it is valid
778 */
779 for (j = 0; j < PERF_TYPE_MAX; ++j) {
780 if (output[j].invalid_fields & all_output_options[i].field) {
781 pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
782 all_output_options[i].str, event_type(j));
783 } else
784 output[j].fields |= all_output_options[i].field;
785 }
786 } else {
787 if (output[type].invalid_fields & all_output_options[i].field) {
788 fprintf(stderr, "\'%s\' not valid for %s events.\n",
789 all_output_options[i].str, event_type(type));
790
791 rc = -EINVAL;
792 goto out;
793 }
794 output[type].fields |= all_output_options[i].field;
795 }
796
797 tok = strtok(NULL, ",");
798 }
799
800 if (type >= 0) {
801 if (output[type].fields == 0) {
802 pr_debug("No fields requested for %s type. "
803 "Events will not be displayed.\n", event_type(type));
804 }
805 }
806
807 out:
808 free(str);
809 return rc;
810 }
811
812 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
813 static int is_directory(const char *base_path, const struct dirent *dent)
814 {
815 char path[PATH_MAX];
816 struct stat st;
817
818 sprintf(path, "%s/%s", base_path, dent->d_name);
819 if (stat(path, &st))
820 return 0;
821
822 return S_ISDIR(st.st_mode);
823 }
824
825 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
826 while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
827 lang_next) \
828 if ((lang_dirent.d_type == DT_DIR || \
829 (lang_dirent.d_type == DT_UNKNOWN && \
830 is_directory(scripts_path, &lang_dirent))) && \
831 (strcmp(lang_dirent.d_name, ".")) && \
832 (strcmp(lang_dirent.d_name, "..")))
833
834 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
835 while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
836 script_next) \
837 if (script_dirent.d_type != DT_DIR && \
838 (script_dirent.d_type != DT_UNKNOWN || \
839 !is_directory(lang_path, &script_dirent)))
840
841
842 #define RECORD_SUFFIX "-record"
843 #define REPORT_SUFFIX "-report"
844
845 struct script_desc {
846 struct list_head node;
847 char *name;
848 char *half_liner;
849 char *args;
850 };
851
852 static LIST_HEAD(script_descs);
853
854 static struct script_desc *script_desc__new(const char *name)
855 {
856 struct script_desc *s = zalloc(sizeof(*s));
857
858 if (s != NULL && name)
859 s->name = strdup(name);
860
861 return s;
862 }
863
864 static void script_desc__delete(struct script_desc *s)
865 {
866 free(s->name);
867 free(s->half_liner);
868 free(s->args);
869 free(s);
870 }
871
872 static void script_desc__add(struct script_desc *s)
873 {
874 list_add_tail(&s->node, &script_descs);
875 }
876
877 static struct script_desc *script_desc__find(const char *name)
878 {
879 struct script_desc *s;
880
881 list_for_each_entry(s, &script_descs, node)
882 if (strcasecmp(s->name, name) == 0)
883 return s;
884 return NULL;
885 }
886
887 static struct script_desc *script_desc__findnew(const char *name)
888 {
889 struct script_desc *s = script_desc__find(name);
890
891 if (s)
892 return s;
893
894 s = script_desc__new(name);
895 if (!s)
896 goto out_delete_desc;
897
898 script_desc__add(s);
899
900 return s;
901
902 out_delete_desc:
903 script_desc__delete(s);
904
905 return NULL;
906 }
907
908 static const char *ends_with(const char *str, const char *suffix)
909 {
910 size_t suffix_len = strlen(suffix);
911 const char *p = str;
912
913 if (strlen(str) > suffix_len) {
914 p = str + strlen(str) - suffix_len;
915 if (!strncmp(p, suffix, suffix_len))
916 return p;
917 }
918
919 return NULL;
920 }
921
922 static char *ltrim(char *str)
923 {
924 int len = strlen(str);
925
926 while (len && isspace(*str)) {
927 len--;
928 str++;
929 }
930
931 return str;
932 }
933
934 static int read_script_info(struct script_desc *desc, const char *filename)
935 {
936 char line[BUFSIZ], *p;
937 FILE *fp;
938
939 fp = fopen(filename, "r");
940 if (!fp)
941 return -1;
942
943 while (fgets(line, sizeof(line), fp)) {
944 p = ltrim(line);
945 if (strlen(p) == 0)
946 continue;
947 if (*p != '#')
948 continue;
949 p++;
950 if (strlen(p) && *p == '!')
951 continue;
952
953 p = ltrim(p);
954 if (strlen(p) && p[strlen(p) - 1] == '\n')
955 p[strlen(p) - 1] = '\0';
956
957 if (!strncmp(p, "description:", strlen("description:"))) {
958 p += strlen("description:");
959 desc->half_liner = strdup(ltrim(p));
960 continue;
961 }
962
963 if (!strncmp(p, "args:", strlen("args:"))) {
964 p += strlen("args:");
965 desc->args = strdup(ltrim(p));
966 continue;
967 }
968 }
969
970 fclose(fp);
971
972 return 0;
973 }
974
975 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
976 {
977 char *script_root, *str;
978
979 script_root = strdup(script_dirent->d_name);
980 if (!script_root)
981 return NULL;
982
983 str = (char *)ends_with(script_root, suffix);
984 if (!str) {
985 free(script_root);
986 return NULL;
987 }
988
989 *str = '\0';
990 return script_root;
991 }
992
993 static int list_available_scripts(const struct option *opt __used,
994 const char *s __used, int unset __used)
995 {
996 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
997 char scripts_path[MAXPATHLEN];
998 DIR *scripts_dir, *lang_dir;
999 char script_path[MAXPATHLEN];
1000 char lang_path[MAXPATHLEN];
1001 struct script_desc *desc;
1002 char first_half[BUFSIZ];
1003 char *script_root;
1004
1005 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1006
1007 scripts_dir = opendir(scripts_path);
1008 if (!scripts_dir)
1009 return -1;
1010
1011 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1012 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1013 lang_dirent.d_name);
1014 lang_dir = opendir(lang_path);
1015 if (!lang_dir)
1016 continue;
1017
1018 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1019 script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
1020 if (script_root) {
1021 desc = script_desc__findnew(script_root);
1022 snprintf(script_path, MAXPATHLEN, "%s/%s",
1023 lang_path, script_dirent.d_name);
1024 read_script_info(desc, script_path);
1025 free(script_root);
1026 }
1027 }
1028 }
1029
1030 fprintf(stdout, "List of available trace scripts:\n");
1031 list_for_each_entry(desc, &script_descs, node) {
1032 sprintf(first_half, "%s %s", desc->name,
1033 desc->args ? desc->args : "");
1034 fprintf(stdout, " %-36s %s\n", first_half,
1035 desc->half_liner ? desc->half_liner : "");
1036 }
1037
1038 exit(0);
1039 }
1040
1041 static char *get_script_path(const char *script_root, const char *suffix)
1042 {
1043 struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1044 char scripts_path[MAXPATHLEN];
1045 char script_path[MAXPATHLEN];
1046 DIR *scripts_dir, *lang_dir;
1047 char lang_path[MAXPATHLEN];
1048 char *__script_root;
1049
1050 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1051
1052 scripts_dir = opendir(scripts_path);
1053 if (!scripts_dir)
1054 return NULL;
1055
1056 for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1057 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1058 lang_dirent.d_name);
1059 lang_dir = opendir(lang_path);
1060 if (!lang_dir)
1061 continue;
1062
1063 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1064 __script_root = get_script_root(&script_dirent, suffix);
1065 if (__script_root && !strcmp(script_root, __script_root)) {
1066 free(__script_root);
1067 closedir(lang_dir);
1068 closedir(scripts_dir);
1069 snprintf(script_path, MAXPATHLEN, "%s/%s",
1070 lang_path, script_dirent.d_name);
1071 return strdup(script_path);
1072 }
1073 free(__script_root);
1074 }
1075 closedir(lang_dir);
1076 }
1077 closedir(scripts_dir);
1078
1079 return NULL;
1080 }
1081
1082 static bool is_top_script(const char *script_path)
1083 {
1084 return ends_with(script_path, "top") == NULL ? false : true;
1085 }
1086
1087 static int has_required_arg(char *script_path)
1088 {
1089 struct script_desc *desc;
1090 int n_args = 0;
1091 char *p;
1092
1093 desc = script_desc__new(NULL);
1094
1095 if (read_script_info(desc, script_path))
1096 goto out;
1097
1098 if (!desc->args)
1099 goto out;
1100
1101 for (p = desc->args; *p; p++)
1102 if (*p == '<')
1103 n_args++;
1104 out:
1105 script_desc__delete(desc);
1106
1107 return n_args;
1108 }
1109
1110 static const char * const script_usage[] = {
1111 "perf script [<options>]",
1112 "perf script [<options>] record <script> [<record-options>] <command>",
1113 "perf script [<options>] report <script> [script-args]",
1114 "perf script [<options>] <script> [<record-options>] <command>",
1115 "perf script [<options>] <top-script> [script-args]",
1116 NULL
1117 };
1118
1119 static const struct option options[] = {
1120 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1121 "dump raw trace in ASCII"),
1122 OPT_INCR('v', "verbose", &verbose,
1123 "be more verbose (show symbol address, etc)"),
1124 OPT_BOOLEAN('L', "Latency", &latency_format,
1125 "show latency attributes (irqs/preemption disabled, etc)"),
1126 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1127 list_available_scripts),
1128 OPT_CALLBACK('s', "script", NULL, "name",
1129 "script file name (lang:script name, script name, or *)",
1130 parse_scriptname),
1131 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1132 "generate perf-script.xx script in specified language"),
1133 OPT_STRING('i', "input", &input_name, "file",
1134 "input file name"),
1135 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1136 "do various checks like samples ordering and lost events"),
1137 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1138 "file", "vmlinux pathname"),
1139 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1140 "file", "kallsyms pathname"),
1141 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1142 "When printing symbols do not display call chain"),
1143 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1144 "Look for files with symbols relative to this directory"),
1145 OPT_CALLBACK('f', "fields", NULL, "str",
1146 "comma separated output fields prepend with 'type:'. "
1147 "Valid types: hw,sw,trace,raw. "
1148 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1149 "addr,symoff",
1150 parse_output_fields),
1151 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1152 "system-wide collection from all CPUs"),
1153 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1154 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1155 "only display events for these comms"),
1156 OPT_BOOLEAN('I', "show-info", &show_full_info,
1157 "display extended information from perf.data file"),
1158 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
1159 "Show the path of [kernel.kallsyms]"),
1160
1161 OPT_END()
1162 };
1163
1164 static bool have_cmd(int argc, const char **argv)
1165 {
1166 char **__argv = malloc(sizeof(const char *) * argc);
1167
1168 if (!__argv)
1169 die("malloc");
1170 memcpy(__argv, argv, sizeof(const char *) * argc);
1171 argc = parse_options(argc, (const char **)__argv, record_options,
1172 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1173 free(__argv);
1174
1175 return argc != 0;
1176 }
1177
1178 int cmd_script(int argc, const char **argv, const char *prefix __used)
1179 {
1180 char *rec_script_path = NULL;
1181 char *rep_script_path = NULL;
1182 struct perf_session *session;
1183 char *script_path = NULL;
1184 const char **__argv;
1185 int i, j, err;
1186
1187 setup_scripting();
1188
1189 argc = parse_options(argc, argv, options, script_usage,
1190 PARSE_OPT_STOP_AT_NON_OPTION);
1191
1192 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1193 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1194 if (!rec_script_path)
1195 return cmd_record(argc, argv, NULL);
1196 }
1197
1198 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1199 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1200 if (!rep_script_path) {
1201 fprintf(stderr,
1202 "Please specify a valid report script"
1203 "(see 'perf script -l' for listing)\n");
1204 return -1;
1205 }
1206 }
1207
1208 /* make sure PERF_EXEC_PATH is set for scripts */
1209 perf_set_argv_exec_path(perf_exec_path());
1210
1211 if (argc && !script_name && !rec_script_path && !rep_script_path) {
1212 int live_pipe[2];
1213 int rep_args;
1214 pid_t pid;
1215
1216 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1217 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1218
1219 if (!rec_script_path && !rep_script_path) {
1220 fprintf(stderr, " Couldn't find script %s\n\n See perf"
1221 " script -l for available scripts.\n", argv[0]);
1222 usage_with_options(script_usage, options);
1223 }
1224
1225 if (is_top_script(argv[0])) {
1226 rep_args = argc - 1;
1227 } else {
1228 int rec_args;
1229
1230 rep_args = has_required_arg(rep_script_path);
1231 rec_args = (argc - 1) - rep_args;
1232 if (rec_args < 0) {
1233 fprintf(stderr, " %s script requires options."
1234 "\n\n See perf script -l for available "
1235 "scripts and options.\n", argv[0]);
1236 usage_with_options(script_usage, options);
1237 }
1238 }
1239
1240 if (pipe(live_pipe) < 0) {
1241 perror("failed to create pipe");
1242 exit(-1);
1243 }
1244
1245 pid = fork();
1246 if (pid < 0) {
1247 perror("failed to fork");
1248 exit(-1);
1249 }
1250
1251 if (!pid) {
1252 j = 0;
1253
1254 dup2(live_pipe[1], 1);
1255 close(live_pipe[0]);
1256
1257 if (is_top_script(argv[0])) {
1258 system_wide = true;
1259 } else if (!system_wide) {
1260 system_wide = !have_cmd(argc - rep_args,
1261 &argv[rep_args]);
1262 }
1263
1264 __argv = malloc((argc + 6) * sizeof(const char *));
1265 if (!__argv)
1266 die("malloc");
1267
1268 __argv[j++] = "/bin/sh";
1269 __argv[j++] = rec_script_path;
1270 if (system_wide)
1271 __argv[j++] = "-a";
1272 __argv[j++] = "-q";
1273 __argv[j++] = "-o";
1274 __argv[j++] = "-";
1275 for (i = rep_args + 1; i < argc; i++)
1276 __argv[j++] = argv[i];
1277 __argv[j++] = NULL;
1278
1279 execvp("/bin/sh", (char **)__argv);
1280 free(__argv);
1281 exit(-1);
1282 }
1283
1284 dup2(live_pipe[0], 0);
1285 close(live_pipe[1]);
1286
1287 __argv = malloc((argc + 4) * sizeof(const char *));
1288 if (!__argv)
1289 die("malloc");
1290 j = 0;
1291 __argv[j++] = "/bin/sh";
1292 __argv[j++] = rep_script_path;
1293 for (i = 1; i < rep_args + 1; i++)
1294 __argv[j++] = argv[i];
1295 __argv[j++] = "-i";
1296 __argv[j++] = "-";
1297 __argv[j++] = NULL;
1298
1299 execvp("/bin/sh", (char **)__argv);
1300 free(__argv);
1301 exit(-1);
1302 }
1303
1304 if (rec_script_path)
1305 script_path = rec_script_path;
1306 if (rep_script_path)
1307 script_path = rep_script_path;
1308
1309 if (script_path) {
1310 j = 0;
1311
1312 if (!rec_script_path)
1313 system_wide = false;
1314 else if (!system_wide)
1315 system_wide = !have_cmd(argc - 1, &argv[1]);
1316
1317 __argv = malloc((argc + 2) * sizeof(const char *));
1318 if (!__argv)
1319 die("malloc");
1320 __argv[j++] = "/bin/sh";
1321 __argv[j++] = script_path;
1322 if (system_wide)
1323 __argv[j++] = "-a";
1324 for (i = 2; i < argc; i++)
1325 __argv[j++] = argv[i];
1326 __argv[j++] = NULL;
1327
1328 execvp("/bin/sh", (char **)__argv);
1329 free(__argv);
1330 exit(-1);
1331 }
1332
1333 if (symbol__init() < 0)
1334 return -1;
1335 if (!script_name)
1336 setup_pager();
1337
1338 session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_script);
1339 if (session == NULL)
1340 return -ENOMEM;
1341
1342 if (cpu_list) {
1343 if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
1344 return -1;
1345 }
1346
1347 perf_session__fprintf_info(session, stdout, show_full_info);
1348
1349 if (!no_callchain)
1350 symbol_conf.use_callchain = true;
1351 else
1352 symbol_conf.use_callchain = false;
1353
1354 if (generate_script_lang) {
1355 struct stat perf_stat;
1356 int input;
1357
1358 if (output_set_by_user()) {
1359 fprintf(stderr,
1360 "custom fields not supported for generated scripts");
1361 return -1;
1362 }
1363
1364 input = open(session->filename, O_RDONLY); /* input_name */
1365 if (input < 0) {
1366 perror("failed to open file");
1367 exit(-1);
1368 }
1369
1370 err = fstat(input, &perf_stat);
1371 if (err < 0) {
1372 perror("failed to stat file");
1373 exit(-1);
1374 }
1375
1376 if (!perf_stat.st_size) {
1377 fprintf(stderr, "zero-sized file, nothing to do!\n");
1378 exit(0);
1379 }
1380
1381 scripting_ops = script_spec__lookup(generate_script_lang);
1382 if (!scripting_ops) {
1383 fprintf(stderr, "invalid language specifier");
1384 return -1;
1385 }
1386
1387 err = scripting_ops->generate_script("perf-script");
1388 goto out;
1389 }
1390
1391 if (script_name) {
1392 err = scripting_ops->start_script(script_name, argc, argv);
1393 if (err)
1394 goto out;
1395 pr_debug("perf script started with script %s\n\n", script_name);
1396 }
1397
1398
1399 err = perf_session__check_output_opt(session);
1400 if (err < 0)
1401 goto out;
1402
1403 err = __cmd_script(session);
1404
1405 perf_session__delete(session);
1406 cleanup_scripting();
1407 out:
1408 return err;
1409 }
Linux kernel - Deliverables
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