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