6b4925f65bf02f42bfa98641842ea6df9a826c5f
[sfrench/cifs-2.6.git] / tools / perf / builtin-script.c
1 #include "builtin.h"
2
3 #include "perf.h"
4 #include "util/cache.h"
5 #include "util/debug.h"
6 #include "util/exec_cmd.h"
7 #include "util/header.h"
8 #include "util/parse-options.h"
9 #include "util/session.h"
10 #include "util/tool.h"
11 #include "util/symbol.h"
12 #include "util/thread.h"
13 #include "util/trace-event.h"
14 #include "util/util.h"
15 #include "util/evlist.h"
16 #include "util/evsel.h"
17 #include "util/sort.h"
18 #include "util/data.h"
19 #include <linux/bitmap.h>
20
21 static char const               *script_name;
22 static char const               *generate_script_lang;
23 static bool                     debug_mode;
24 static u64                      last_timestamp;
25 static u64                      nr_unordered;
26 extern const struct option      record_options[];
27 static bool                     no_callchain;
28 static bool                     latency_format;
29 static bool                     system_wide;
30 static const char               *cpu_list;
31 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
32
33 enum perf_output_field {
34         PERF_OUTPUT_COMM            = 1U << 0,
35         PERF_OUTPUT_TID             = 1U << 1,
36         PERF_OUTPUT_PID             = 1U << 2,
37         PERF_OUTPUT_TIME            = 1U << 3,
38         PERF_OUTPUT_CPU             = 1U << 4,
39         PERF_OUTPUT_EVNAME          = 1U << 5,
40         PERF_OUTPUT_TRACE           = 1U << 6,
41         PERF_OUTPUT_IP              = 1U << 7,
42         PERF_OUTPUT_SYM             = 1U << 8,
43         PERF_OUTPUT_DSO             = 1U << 9,
44         PERF_OUTPUT_ADDR            = 1U << 10,
45         PERF_OUTPUT_SYMOFFSET       = 1U << 11,
46         PERF_OUTPUT_SRCLINE         = 1U << 12,
47 };
48
49 struct output_option {
50         const char *str;
51         enum perf_output_field field;
52 } all_output_options[] = {
53         {.str = "comm",  .field = PERF_OUTPUT_COMM},
54         {.str = "tid",   .field = PERF_OUTPUT_TID},
55         {.str = "pid",   .field = PERF_OUTPUT_PID},
56         {.str = "time",  .field = PERF_OUTPUT_TIME},
57         {.str = "cpu",   .field = PERF_OUTPUT_CPU},
58         {.str = "event", .field = PERF_OUTPUT_EVNAME},
59         {.str = "trace", .field = PERF_OUTPUT_TRACE},
60         {.str = "ip",    .field = PERF_OUTPUT_IP},
61         {.str = "sym",   .field = PERF_OUTPUT_SYM},
62         {.str = "dso",   .field = PERF_OUTPUT_DSO},
63         {.str = "addr",  .field = PERF_OUTPUT_ADDR},
64         {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
65         {.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
66 };
67
68 /* default set to maintain compatibility with current format */
69 static struct {
70         bool user_set;
71         bool wildcard_set;
72         unsigned int print_ip_opts;
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
189         if (PRINT_FIELD(ADDR) &&
190                 perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
191                                         PERF_OUTPUT_ADDR))
192                 return -EINVAL;
193
194         if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
195                 pr_err("Display of symbols requested but neither sample IP nor "
196                            "sample address\nis selected. Hence, no addresses to convert "
197                        "to symbols.\n");
198                 return -EINVAL;
199         }
200         if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
201                 pr_err("Display of offsets requested but symbol is not"
202                        "selected.\n");
203                 return -EINVAL;
204         }
205         if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
206                 pr_err("Display of DSO requested but neither sample IP nor "
207                            "sample address\nis selected. Hence, no addresses to convert "
208                        "to DSO.\n");
209                 return -EINVAL;
210         }
211         if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
212                 pr_err("Display of source line number requested but sample IP is not\n"
213                        "selected. Hence, no address to lookup the source line number.\n");
214                 return -EINVAL;
215         }
216
217         if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
218                 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
219                                         PERF_OUTPUT_TID|PERF_OUTPUT_PID))
220                 return -EINVAL;
221
222         if (PRINT_FIELD(TIME) &&
223                 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
224                                         PERF_OUTPUT_TIME))
225                 return -EINVAL;
226
227         if (PRINT_FIELD(CPU) &&
228                 perf_evsel__check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
229                                         PERF_OUTPUT_CPU))
230                 return -EINVAL;
231
232         return 0;
233 }
234
235 static void set_print_ip_opts(struct perf_event_attr *attr)
236 {
237         unsigned int type = attr->type;
238
239         output[type].print_ip_opts = 0;
240         if (PRINT_FIELD(IP))
241                 output[type].print_ip_opts |= PRINT_IP_OPT_IP;
242
243         if (PRINT_FIELD(SYM))
244                 output[type].print_ip_opts |= PRINT_IP_OPT_SYM;
245
246         if (PRINT_FIELD(DSO))
247                 output[type].print_ip_opts |= PRINT_IP_OPT_DSO;
248
249         if (PRINT_FIELD(SYMOFFSET))
250                 output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
251
252         if (PRINT_FIELD(SRCLINE))
253                 output[type].print_ip_opts |= PRINT_IP_OPT_SRCLINE;
254 }
255
256 /*
257  * verify all user requested events exist and the samples
258  * have the expected data
259  */
260 static int perf_session__check_output_opt(struct perf_session *session)
261 {
262         int j;
263         struct perf_evsel *evsel;
264
265         for (j = 0; j < PERF_TYPE_MAX; ++j) {
266                 evsel = perf_session__find_first_evtype(session, j);
267
268                 /*
269                  * even if fields is set to 0 (ie., show nothing) event must
270                  * exist if user explicitly includes it on the command line
271                  */
272                 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
273                         pr_err("%s events do not exist. "
274                                "Remove corresponding -f option to proceed.\n",
275                                event_type(j));
276                         return -1;
277                 }
278
279                 if (evsel && output[j].fields &&
280                         perf_evsel__check_attr(evsel, session))
281                         return -1;
282
283                 if (evsel == NULL)
284                         continue;
285
286                 set_print_ip_opts(&evsel->attr);
287         }
288
289         if (!no_callchain) {
290                 bool use_callchain = false;
291
292                 evlist__for_each(session->evlist, evsel) {
293                         if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
294                                 use_callchain = true;
295                                 break;
296                         }
297                 }
298                 if (!use_callchain)
299                         symbol_conf.use_callchain = false;
300         }
301
302         /*
303          * set default for tracepoints to print symbols only
304          * if callchains are present
305          */
306         if (symbol_conf.use_callchain &&
307             !output[PERF_TYPE_TRACEPOINT].user_set) {
308                 struct perf_event_attr *attr;
309
310                 j = PERF_TYPE_TRACEPOINT;
311                 evsel = perf_session__find_first_evtype(session, j);
312                 if (evsel == NULL)
313                         goto out;
314
315                 attr = &evsel->attr;
316
317                 if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
318                         output[j].fields |= PERF_OUTPUT_IP;
319                         output[j].fields |= PERF_OUTPUT_SYM;
320                         output[j].fields |= PERF_OUTPUT_DSO;
321                         set_print_ip_opts(attr);
322                 }
323         }
324
325 out:
326         return 0;
327 }
328
329 static void print_sample_start(struct perf_sample *sample,
330                                struct thread *thread,
331                                struct perf_evsel *evsel)
332 {
333         struct perf_event_attr *attr = &evsel->attr;
334         unsigned long secs;
335         unsigned long usecs;
336         unsigned long long nsecs;
337
338         if (PRINT_FIELD(COMM)) {
339                 if (latency_format)
340                         printf("%8.8s ", thread__comm_str(thread));
341                 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
342                         printf("%s ", thread__comm_str(thread));
343                 else
344                         printf("%16s ", thread__comm_str(thread));
345         }
346
347         if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
348                 printf("%5d/%-5d ", sample->pid, sample->tid);
349         else if (PRINT_FIELD(PID))
350                 printf("%5d ", sample->pid);
351         else if (PRINT_FIELD(TID))
352                 printf("%5d ", sample->tid);
353
354         if (PRINT_FIELD(CPU)) {
355                 if (latency_format)
356                         printf("%3d ", sample->cpu);
357                 else
358                         printf("[%03d] ", sample->cpu);
359         }
360
361         if (PRINT_FIELD(TIME)) {
362                 nsecs = sample->time;
363                 secs = nsecs / NSECS_PER_SEC;
364                 nsecs -= secs * NSECS_PER_SEC;
365                 usecs = nsecs / NSECS_PER_USEC;
366                 printf("%5lu.%06lu: ", secs, usecs);
367         }
368 }
369
370 static void print_sample_addr(union perf_event *event,
371                           struct perf_sample *sample,
372                           struct machine *machine,
373                           struct thread *thread,
374                           struct perf_event_attr *attr)
375 {
376         struct addr_location al;
377
378         printf("%16" PRIx64, sample->addr);
379
380         if (!sample_addr_correlates_sym(attr))
381                 return;
382
383         perf_event__preprocess_sample_addr(event, sample, machine, thread, &al);
384
385         if (PRINT_FIELD(SYM)) {
386                 printf(" ");
387                 if (PRINT_FIELD(SYMOFFSET))
388                         symbol__fprintf_symname_offs(al.sym, &al, stdout);
389                 else
390                         symbol__fprintf_symname(al.sym, stdout);
391         }
392
393         if (PRINT_FIELD(DSO)) {
394                 printf(" (");
395                 map__fprintf_dsoname(al.map, stdout);
396                 printf(")");
397         }
398 }
399
400 static void print_sample_bts(union perf_event *event,
401                              struct perf_sample *sample,
402                              struct perf_evsel *evsel,
403                              struct thread *thread,
404                              struct addr_location *al)
405 {
406         struct perf_event_attr *attr = &evsel->attr;
407         bool print_srcline_last = false;
408
409         /* print branch_from information */
410         if (PRINT_FIELD(IP)) {
411                 unsigned int print_opts = output[attr->type].print_ip_opts;
412
413                 if (symbol_conf.use_callchain && sample->callchain) {
414                         printf("\n");
415                 } else {
416                         printf(" ");
417                         if (print_opts & PRINT_IP_OPT_SRCLINE) {
418                                 print_srcline_last = true;
419                                 print_opts &= ~PRINT_IP_OPT_SRCLINE;
420                         }
421                 }
422                 perf_evsel__print_ip(evsel, sample, al, print_opts,
423                                      PERF_MAX_STACK_DEPTH);
424         }
425
426         /* print branch_to information */
427         if (PRINT_FIELD(ADDR) ||
428             ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
429              !output[attr->type].user_set)) {
430                 printf(" => ");
431                 print_sample_addr(event, sample, al->machine, thread, attr);
432         }
433
434         if (print_srcline_last)
435                 map__fprintf_srcline(al->map, al->addr, "\n  ", stdout);
436
437         printf("\n");
438 }
439
440 static void process_event(union perf_event *event, struct perf_sample *sample,
441                           struct perf_evsel *evsel, struct thread *thread,
442                           struct addr_location *al)
443 {
444         struct perf_event_attr *attr = &evsel->attr;
445
446         if (output[attr->type].fields == 0)
447                 return;
448
449         print_sample_start(sample, thread, evsel);
450
451         if (PRINT_FIELD(EVNAME)) {
452                 const char *evname = perf_evsel__name(evsel);
453                 printf("%s: ", evname ? evname : "[unknown]");
454         }
455
456         if (is_bts_event(attr)) {
457                 print_sample_bts(event, sample, evsel, thread, al);
458                 return;
459         }
460
461         if (PRINT_FIELD(TRACE))
462                 event_format__print(evsel->tp_format, sample->cpu,
463                                     sample->raw_data, sample->raw_size);
464         if (PRINT_FIELD(ADDR))
465                 print_sample_addr(event, sample, al->machine, thread, attr);
466
467         if (PRINT_FIELD(IP)) {
468                 if (!symbol_conf.use_callchain)
469                         printf(" ");
470                 else
471                         printf("\n");
472
473                 perf_evsel__print_ip(evsel, sample, al,
474                                      output[attr->type].print_ip_opts,
475                                      PERF_MAX_STACK_DEPTH);
476         }
477
478         printf("\n");
479 }
480
481 static int default_start_script(const char *script __maybe_unused,
482                                 int argc __maybe_unused,
483                                 const char **argv __maybe_unused)
484 {
485         return 0;
486 }
487
488 static int default_flush_script(void)
489 {
490         return 0;
491 }
492
493 static int default_stop_script(void)
494 {
495         return 0;
496 }
497
498 static int default_generate_script(struct pevent *pevent __maybe_unused,
499                                    const char *outfile __maybe_unused)
500 {
501         return 0;
502 }
503
504 static struct scripting_ops default_scripting_ops = {
505         .start_script           = default_start_script,
506         .flush_script           = default_flush_script,
507         .stop_script            = default_stop_script,
508         .process_event          = process_event,
509         .generate_script        = default_generate_script,
510 };
511
512 static struct scripting_ops     *scripting_ops;
513
514 static void setup_scripting(void)
515 {
516         setup_perl_scripting();
517         setup_python_scripting();
518
519         scripting_ops = &default_scripting_ops;
520 }
521
522 static int flush_scripting(void)
523 {
524         return scripting_ops->flush_script();
525 }
526
527 static int cleanup_scripting(void)
528 {
529         pr_debug("\nperf script stopped\n");
530
531         return scripting_ops->stop_script();
532 }
533
534 static int process_sample_event(struct perf_tool *tool __maybe_unused,
535                                 union perf_event *event,
536                                 struct perf_sample *sample,
537                                 struct perf_evsel *evsel,
538                                 struct machine *machine)
539 {
540         struct addr_location al;
541         struct thread *thread = machine__findnew_thread(machine, sample->pid,
542                                                         sample->tid);
543
544         if (thread == NULL) {
545                 pr_debug("problem processing %d event, skipping it.\n",
546                          event->header.type);
547                 return -1;
548         }
549
550         if (debug_mode) {
551                 if (sample->time < last_timestamp) {
552                         pr_err("Samples misordered, previous: %" PRIu64
553                                 " this: %" PRIu64 "\n", last_timestamp,
554                                 sample->time);
555                         nr_unordered++;
556                 }
557                 last_timestamp = sample->time;
558                 return 0;
559         }
560
561         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
562                 pr_err("problem processing %d event, skipping it.\n",
563                        event->header.type);
564                 return -1;
565         }
566
567         if (al.filtered)
568                 return 0;
569
570         if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
571                 return 0;
572
573         scripting_ops->process_event(event, sample, evsel, thread, &al);
574
575         return 0;
576 }
577
578 struct perf_script {
579         struct perf_tool        tool;
580         struct perf_session     *session;
581         bool                    show_task_events;
582         bool                    show_mmap_events;
583 };
584
585 static int process_attr(struct perf_tool *tool, union perf_event *event,
586                         struct perf_evlist **pevlist)
587 {
588         struct perf_script *scr = container_of(tool, struct perf_script, tool);
589         struct perf_evlist *evlist;
590         struct perf_evsel *evsel, *pos;
591         int err;
592
593         err = perf_event__process_attr(tool, event, pevlist);
594         if (err)
595                 return err;
596
597         evlist = *pevlist;
598         evsel = perf_evlist__last(*pevlist);
599
600         if (evsel->attr.type >= PERF_TYPE_MAX)
601                 return 0;
602
603         evlist__for_each(evlist, pos) {
604                 if (pos->attr.type == evsel->attr.type && pos != evsel)
605                         return 0;
606         }
607
608         set_print_ip_opts(&evsel->attr);
609
610         return perf_evsel__check_attr(evsel, scr->session);
611 }
612
613 static int process_comm_event(struct perf_tool *tool,
614                               union perf_event *event,
615                               struct perf_sample *sample,
616                               struct machine *machine)
617 {
618         struct thread *thread;
619         struct perf_script *script = container_of(tool, struct perf_script, tool);
620         struct perf_session *session = script->session;
621         struct perf_evsel *evsel = perf_evlist__first(session->evlist);
622         int ret = -1;
623
624         thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
625         if (thread == NULL) {
626                 pr_debug("problem processing COMM event, skipping it.\n");
627                 return -1;
628         }
629
630         if (perf_event__process_comm(tool, event, sample, machine) < 0)
631                 goto out;
632
633         if (!evsel->attr.sample_id_all) {
634                 sample->cpu = 0;
635                 sample->time = 0;
636                 sample->tid = event->comm.tid;
637                 sample->pid = event->comm.pid;
638         }
639         print_sample_start(sample, thread, evsel);
640         perf_event__fprintf(event, stdout);
641         ret = 0;
642
643 out:
644         return ret;
645 }
646
647 static int process_fork_event(struct perf_tool *tool,
648                               union perf_event *event,
649                               struct perf_sample *sample,
650                               struct machine *machine)
651 {
652         struct thread *thread;
653         struct perf_script *script = container_of(tool, struct perf_script, tool);
654         struct perf_session *session = script->session;
655         struct perf_evsel *evsel = perf_evlist__first(session->evlist);
656
657         if (perf_event__process_fork(tool, event, sample, machine) < 0)
658                 return -1;
659
660         thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
661         if (thread == NULL) {
662                 pr_debug("problem processing FORK event, skipping it.\n");
663                 return -1;
664         }
665
666         if (!evsel->attr.sample_id_all) {
667                 sample->cpu = 0;
668                 sample->time = event->fork.time;
669                 sample->tid = event->fork.tid;
670                 sample->pid = event->fork.pid;
671         }
672         print_sample_start(sample, thread, evsel);
673         perf_event__fprintf(event, stdout);
674
675         return 0;
676 }
677 static int process_exit_event(struct perf_tool *tool,
678                               union perf_event *event,
679                               struct perf_sample *sample,
680                               struct machine *machine)
681 {
682         struct thread *thread;
683         struct perf_script *script = container_of(tool, struct perf_script, tool);
684         struct perf_session *session = script->session;
685         struct perf_evsel *evsel = perf_evlist__first(session->evlist);
686
687         thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
688         if (thread == NULL) {
689                 pr_debug("problem processing EXIT event, skipping it.\n");
690                 return -1;
691         }
692
693         if (!evsel->attr.sample_id_all) {
694                 sample->cpu = 0;
695                 sample->time = 0;
696                 sample->tid = event->comm.tid;
697                 sample->pid = event->comm.pid;
698         }
699         print_sample_start(sample, thread, evsel);
700         perf_event__fprintf(event, stdout);
701
702         if (perf_event__process_exit(tool, event, sample, machine) < 0)
703                 return -1;
704
705         return 0;
706 }
707
708 static int process_mmap_event(struct perf_tool *tool,
709                               union perf_event *event,
710                               struct perf_sample *sample,
711                               struct machine *machine)
712 {
713         struct thread *thread;
714         struct perf_script *script = container_of(tool, struct perf_script, tool);
715         struct perf_session *session = script->session;
716         struct perf_evsel *evsel = perf_evlist__first(session->evlist);
717
718         if (perf_event__process_mmap(tool, event, sample, machine) < 0)
719                 return -1;
720
721         thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
722         if (thread == NULL) {
723                 pr_debug("problem processing MMAP event, skipping it.\n");
724                 return -1;
725         }
726
727         if (!evsel->attr.sample_id_all) {
728                 sample->cpu = 0;
729                 sample->time = 0;
730                 sample->tid = event->mmap.tid;
731                 sample->pid = event->mmap.pid;
732         }
733         print_sample_start(sample, thread, evsel);
734         perf_event__fprintf(event, stdout);
735
736         return 0;
737 }
738
739 static int process_mmap2_event(struct perf_tool *tool,
740                               union perf_event *event,
741                               struct perf_sample *sample,
742                               struct machine *machine)
743 {
744         struct thread *thread;
745         struct perf_script *script = container_of(tool, struct perf_script, tool);
746         struct perf_session *session = script->session;
747         struct perf_evsel *evsel = perf_evlist__first(session->evlist);
748
749         if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
750                 return -1;
751
752         thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
753         if (thread == NULL) {
754                 pr_debug("problem processing MMAP2 event, skipping it.\n");
755                 return -1;
756         }
757
758         if (!evsel->attr.sample_id_all) {
759                 sample->cpu = 0;
760                 sample->time = 0;
761                 sample->tid = event->mmap2.tid;
762                 sample->pid = event->mmap2.pid;
763         }
764         print_sample_start(sample, thread, evsel);
765         perf_event__fprintf(event, stdout);
766
767         return 0;
768 }
769
770 static void sig_handler(int sig __maybe_unused)
771 {
772         session_done = 1;
773 }
774
775 static int __cmd_script(struct perf_script *script)
776 {
777         int ret;
778
779         signal(SIGINT, sig_handler);
780
781         /* override event processing functions */
782         if (script->show_task_events) {
783                 script->tool.comm = process_comm_event;
784                 script->tool.fork = process_fork_event;
785                 script->tool.exit = process_exit_event;
786         }
787         if (script->show_mmap_events) {
788                 script->tool.mmap = process_mmap_event;
789                 script->tool.mmap2 = process_mmap2_event;
790         }
791
792         ret = perf_session__process_events(script->session, &script->tool);
793
794         if (debug_mode)
795                 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
796
797         return ret;
798 }
799
800 struct script_spec {
801         struct list_head        node;
802         struct scripting_ops    *ops;
803         char                    spec[0];
804 };
805
806 static LIST_HEAD(script_specs);
807
808 static struct script_spec *script_spec__new(const char *spec,
809                                             struct scripting_ops *ops)
810 {
811         struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
812
813         if (s != NULL) {
814                 strcpy(s->spec, spec);
815                 s->ops = ops;
816         }
817
818         return s;
819 }
820
821 static void script_spec__add(struct script_spec *s)
822 {
823         list_add_tail(&s->node, &script_specs);
824 }
825
826 static struct script_spec *script_spec__find(const char *spec)
827 {
828         struct script_spec *s;
829
830         list_for_each_entry(s, &script_specs, node)
831                 if (strcasecmp(s->spec, spec) == 0)
832                         return s;
833         return NULL;
834 }
835
836 static struct script_spec *script_spec__findnew(const char *spec,
837                                                 struct scripting_ops *ops)
838 {
839         struct script_spec *s = script_spec__find(spec);
840
841         if (s)
842                 return s;
843
844         s = script_spec__new(spec, ops);
845         if (!s)
846                 return NULL;
847
848         script_spec__add(s);
849
850         return s;
851 }
852
853 int script_spec_register(const char *spec, struct scripting_ops *ops)
854 {
855         struct script_spec *s;
856
857         s = script_spec__find(spec);
858         if (s)
859                 return -1;
860
861         s = script_spec__findnew(spec, ops);
862         if (!s)
863                 return -1;
864
865         return 0;
866 }
867
868 static struct scripting_ops *script_spec__lookup(const char *spec)
869 {
870         struct script_spec *s = script_spec__find(spec);
871         if (!s)
872                 return NULL;
873
874         return s->ops;
875 }
876
877 static void list_available_languages(void)
878 {
879         struct script_spec *s;
880
881         fprintf(stderr, "\n");
882         fprintf(stderr, "Scripting language extensions (used in "
883                 "perf script -s [spec:]script.[spec]):\n\n");
884
885         list_for_each_entry(s, &script_specs, node)
886                 fprintf(stderr, "  %-42s [%s]\n", s->spec, s->ops->name);
887
888         fprintf(stderr, "\n");
889 }
890
891 static int parse_scriptname(const struct option *opt __maybe_unused,
892                             const char *str, int unset __maybe_unused)
893 {
894         char spec[PATH_MAX];
895         const char *script, *ext;
896         int len;
897
898         if (strcmp(str, "lang") == 0) {
899                 list_available_languages();
900                 exit(0);
901         }
902
903         script = strchr(str, ':');
904         if (script) {
905                 len = script - str;
906                 if (len >= PATH_MAX) {
907                         fprintf(stderr, "invalid language specifier");
908                         return -1;
909                 }
910                 strncpy(spec, str, len);
911                 spec[len] = '\0';
912                 scripting_ops = script_spec__lookup(spec);
913                 if (!scripting_ops) {
914                         fprintf(stderr, "invalid language specifier");
915                         return -1;
916                 }
917                 script++;
918         } else {
919                 script = str;
920                 ext = strrchr(script, '.');
921                 if (!ext) {
922                         fprintf(stderr, "invalid script extension");
923                         return -1;
924                 }
925                 scripting_ops = script_spec__lookup(++ext);
926                 if (!scripting_ops) {
927                         fprintf(stderr, "invalid script extension");
928                         return -1;
929                 }
930         }
931
932         script_name = strdup(script);
933
934         return 0;
935 }
936
937 static int parse_output_fields(const struct option *opt __maybe_unused,
938                             const char *arg, int unset __maybe_unused)
939 {
940         char *tok;
941         int i, imax = ARRAY_SIZE(all_output_options);
942         int j;
943         int rc = 0;
944         char *str = strdup(arg);
945         int type = -1;
946
947         if (!str)
948                 return -ENOMEM;
949
950         /* first word can state for which event type the user is specifying
951          * the fields. If no type exists, the specified fields apply to all
952          * event types found in the file minus the invalid fields for a type.
953          */
954         tok = strchr(str, ':');
955         if (tok) {
956                 *tok = '\0';
957                 tok++;
958                 if (!strcmp(str, "hw"))
959                         type = PERF_TYPE_HARDWARE;
960                 else if (!strcmp(str, "sw"))
961                         type = PERF_TYPE_SOFTWARE;
962                 else if (!strcmp(str, "trace"))
963                         type = PERF_TYPE_TRACEPOINT;
964                 else if (!strcmp(str, "raw"))
965                         type = PERF_TYPE_RAW;
966                 else {
967                         fprintf(stderr, "Invalid event type in field string.\n");
968                         rc = -EINVAL;
969                         goto out;
970                 }
971
972                 if (output[type].user_set)
973                         pr_warning("Overriding previous field request for %s events.\n",
974                                    event_type(type));
975
976                 output[type].fields = 0;
977                 output[type].user_set = true;
978                 output[type].wildcard_set = false;
979
980         } else {
981                 tok = str;
982                 if (strlen(str) == 0) {
983                         fprintf(stderr,
984                                 "Cannot set fields to 'none' for all event types.\n");
985                         rc = -EINVAL;
986                         goto out;
987                 }
988
989                 if (output_set_by_user())
990                         pr_warning("Overriding previous field request for all events.\n");
991
992                 for (j = 0; j < PERF_TYPE_MAX; ++j) {
993                         output[j].fields = 0;
994                         output[j].user_set = true;
995                         output[j].wildcard_set = true;
996                 }
997         }
998
999         tok = strtok(tok, ",");
1000         while (tok) {
1001                 for (i = 0; i < imax; ++i) {
1002                         if (strcmp(tok, all_output_options[i].str) == 0)
1003                                 break;
1004                 }
1005                 if (i == imax) {
1006                         fprintf(stderr, "Invalid field requested.\n");
1007                         rc = -EINVAL;
1008                         goto out;
1009                 }
1010
1011                 if (type == -1) {
1012                         /* add user option to all events types for
1013                          * which it is valid
1014                          */
1015                         for (j = 0; j < PERF_TYPE_MAX; ++j) {
1016                                 if (output[j].invalid_fields & all_output_options[i].field) {
1017                                         pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
1018                                                    all_output_options[i].str, event_type(j));
1019                                 } else
1020                                         output[j].fields |= all_output_options[i].field;
1021                         }
1022                 } else {
1023                         if (output[type].invalid_fields & all_output_options[i].field) {
1024                                 fprintf(stderr, "\'%s\' not valid for %s events.\n",
1025                                          all_output_options[i].str, event_type(type));
1026
1027                                 rc = -EINVAL;
1028                                 goto out;
1029                         }
1030                         output[type].fields |= all_output_options[i].field;
1031                 }
1032
1033                 tok = strtok(NULL, ",");
1034         }
1035
1036         if (type >= 0) {
1037                 if (output[type].fields == 0) {
1038                         pr_debug("No fields requested for %s type. "
1039                                  "Events will not be displayed.\n", event_type(type));
1040                 }
1041         }
1042
1043 out:
1044         free(str);
1045         return rc;
1046 }
1047
1048 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
1049 static int is_directory(const char *base_path, const struct dirent *dent)
1050 {
1051         char path[PATH_MAX];
1052         struct stat st;
1053
1054         sprintf(path, "%s/%s", base_path, dent->d_name);
1055         if (stat(path, &st))
1056                 return 0;
1057
1058         return S_ISDIR(st.st_mode);
1059 }
1060
1061 #define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
1062         while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) &&     \
1063                lang_next)                                               \
1064                 if ((lang_dirent.d_type == DT_DIR ||                    \
1065                      (lang_dirent.d_type == DT_UNKNOWN &&               \
1066                       is_directory(scripts_path, &lang_dirent))) &&     \
1067                     (strcmp(lang_dirent.d_name, ".")) &&                \
1068                     (strcmp(lang_dirent.d_name, "..")))
1069
1070 #define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
1071         while (!readdir_r(lang_dir, &script_dirent, &script_next) &&    \
1072                script_next)                                             \
1073                 if (script_dirent.d_type != DT_DIR &&                   \
1074                     (script_dirent.d_type != DT_UNKNOWN ||              \
1075                      !is_directory(lang_path, &script_dirent)))
1076
1077
1078 #define RECORD_SUFFIX                   "-record"
1079 #define REPORT_SUFFIX                   "-report"
1080
1081 struct script_desc {
1082         struct list_head        node;
1083         char                    *name;
1084         char                    *half_liner;
1085         char                    *args;
1086 };
1087
1088 static LIST_HEAD(script_descs);
1089
1090 static struct script_desc *script_desc__new(const char *name)
1091 {
1092         struct script_desc *s = zalloc(sizeof(*s));
1093
1094         if (s != NULL && name)
1095                 s->name = strdup(name);
1096
1097         return s;
1098 }
1099
1100 static void script_desc__delete(struct script_desc *s)
1101 {
1102         zfree(&s->name);
1103         zfree(&s->half_liner);
1104         zfree(&s->args);
1105         free(s);
1106 }
1107
1108 static void script_desc__add(struct script_desc *s)
1109 {
1110         list_add_tail(&s->node, &script_descs);
1111 }
1112
1113 static struct script_desc *script_desc__find(const char *name)
1114 {
1115         struct script_desc *s;
1116
1117         list_for_each_entry(s, &script_descs, node)
1118                 if (strcasecmp(s->name, name) == 0)
1119                         return s;
1120         return NULL;
1121 }
1122
1123 static struct script_desc *script_desc__findnew(const char *name)
1124 {
1125         struct script_desc *s = script_desc__find(name);
1126
1127         if (s)
1128                 return s;
1129
1130         s = script_desc__new(name);
1131         if (!s)
1132                 goto out_delete_desc;
1133
1134         script_desc__add(s);
1135
1136         return s;
1137
1138 out_delete_desc:
1139         script_desc__delete(s);
1140
1141         return NULL;
1142 }
1143
1144 static const char *ends_with(const char *str, const char *suffix)
1145 {
1146         size_t suffix_len = strlen(suffix);
1147         const char *p = str;
1148
1149         if (strlen(str) > suffix_len) {
1150                 p = str + strlen(str) - suffix_len;
1151                 if (!strncmp(p, suffix, suffix_len))
1152                         return p;
1153         }
1154
1155         return NULL;
1156 }
1157
1158 static int read_script_info(struct script_desc *desc, const char *filename)
1159 {
1160         char line[BUFSIZ], *p;
1161         FILE *fp;
1162
1163         fp = fopen(filename, "r");
1164         if (!fp)
1165                 return -1;
1166
1167         while (fgets(line, sizeof(line), fp)) {
1168                 p = ltrim(line);
1169                 if (strlen(p) == 0)
1170                         continue;
1171                 if (*p != '#')
1172                         continue;
1173                 p++;
1174                 if (strlen(p) && *p == '!')
1175                         continue;
1176
1177                 p = ltrim(p);
1178                 if (strlen(p) && p[strlen(p) - 1] == '\n')
1179                         p[strlen(p) - 1] = '\0';
1180
1181                 if (!strncmp(p, "description:", strlen("description:"))) {
1182                         p += strlen("description:");
1183                         desc->half_liner = strdup(ltrim(p));
1184                         continue;
1185                 }
1186
1187                 if (!strncmp(p, "args:", strlen("args:"))) {
1188                         p += strlen("args:");
1189                         desc->args = strdup(ltrim(p));
1190                         continue;
1191                 }
1192         }
1193
1194         fclose(fp);
1195
1196         return 0;
1197 }
1198
1199 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
1200 {
1201         char *script_root, *str;
1202
1203         script_root = strdup(script_dirent->d_name);
1204         if (!script_root)
1205                 return NULL;
1206
1207         str = (char *)ends_with(script_root, suffix);
1208         if (!str) {
1209                 free(script_root);
1210                 return NULL;
1211         }
1212
1213         *str = '\0';
1214         return script_root;
1215 }
1216
1217 static int list_available_scripts(const struct option *opt __maybe_unused,
1218                                   const char *s __maybe_unused,
1219                                   int unset __maybe_unused)
1220 {
1221         struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1222         char scripts_path[MAXPATHLEN];
1223         DIR *scripts_dir, *lang_dir;
1224         char script_path[MAXPATHLEN];
1225         char lang_path[MAXPATHLEN];
1226         struct script_desc *desc;
1227         char first_half[BUFSIZ];
1228         char *script_root;
1229
1230         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1231
1232         scripts_dir = opendir(scripts_path);
1233         if (!scripts_dir)
1234                 return -1;
1235
1236         for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1237                 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1238                          lang_dirent.d_name);
1239                 lang_dir = opendir(lang_path);
1240                 if (!lang_dir)
1241                         continue;
1242
1243                 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1244                         script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
1245                         if (script_root) {
1246                                 desc = script_desc__findnew(script_root);
1247                                 snprintf(script_path, MAXPATHLEN, "%s/%s",
1248                                          lang_path, script_dirent.d_name);
1249                                 read_script_info(desc, script_path);
1250                                 free(script_root);
1251                         }
1252                 }
1253         }
1254
1255         fprintf(stdout, "List of available trace scripts:\n");
1256         list_for_each_entry(desc, &script_descs, node) {
1257                 sprintf(first_half, "%s %s", desc->name,
1258                         desc->args ? desc->args : "");
1259                 fprintf(stdout, "  %-36s %s\n", first_half,
1260                         desc->half_liner ? desc->half_liner : "");
1261         }
1262
1263         exit(0);
1264 }
1265
1266 /*
1267  * Some scripts specify the required events in their "xxx-record" file,
1268  * this function will check if the events in perf.data match those
1269  * mentioned in the "xxx-record".
1270  *
1271  * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1272  * which is covered well now. And new parsing code should be added to
1273  * cover the future complexing formats like event groups etc.
1274  */
1275 static int check_ev_match(char *dir_name, char *scriptname,
1276                         struct perf_session *session)
1277 {
1278         char filename[MAXPATHLEN], evname[128];
1279         char line[BUFSIZ], *p;
1280         struct perf_evsel *pos;
1281         int match, len;
1282         FILE *fp;
1283
1284         sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1285
1286         fp = fopen(filename, "r");
1287         if (!fp)
1288                 return -1;
1289
1290         while (fgets(line, sizeof(line), fp)) {
1291                 p = ltrim(line);
1292                 if (*p == '#')
1293                         continue;
1294
1295                 while (strlen(p)) {
1296                         p = strstr(p, "-e");
1297                         if (!p)
1298                                 break;
1299
1300                         p += 2;
1301                         p = ltrim(p);
1302                         len = strcspn(p, " \t");
1303                         if (!len)
1304                                 break;
1305
1306                         snprintf(evname, len + 1, "%s", p);
1307
1308                         match = 0;
1309                         evlist__for_each(session->evlist, pos) {
1310                                 if (!strcmp(perf_evsel__name(pos), evname)) {
1311                                         match = 1;
1312                                         break;
1313                                 }
1314                         }
1315
1316                         if (!match) {
1317                                 fclose(fp);
1318                                 return -1;
1319                         }
1320                 }
1321         }
1322
1323         fclose(fp);
1324         return 0;
1325 }
1326
1327 /*
1328  * Return -1 if none is found, otherwise the actual scripts number.
1329  *
1330  * Currently the only user of this function is the script browser, which
1331  * will list all statically runnable scripts, select one, execute it and
1332  * show the output in a perf browser.
1333  */
1334 int find_scripts(char **scripts_array, char **scripts_path_array)
1335 {
1336         struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1337         char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1338         DIR *scripts_dir, *lang_dir;
1339         struct perf_session *session;
1340         struct perf_data_file file = {
1341                 .path = input_name,
1342                 .mode = PERF_DATA_MODE_READ,
1343         };
1344         char *temp;
1345         int i = 0;
1346
1347         session = perf_session__new(&file, false, NULL);
1348         if (!session)
1349                 return -1;
1350
1351         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1352
1353         scripts_dir = opendir(scripts_path);
1354         if (!scripts_dir) {
1355                 perf_session__delete(session);
1356                 return -1;
1357         }
1358
1359         for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1360                 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1361                          lang_dirent.d_name);
1362 #ifdef NO_LIBPERL
1363                 if (strstr(lang_path, "perl"))
1364                         continue;
1365 #endif
1366 #ifdef NO_LIBPYTHON
1367                 if (strstr(lang_path, "python"))
1368                         continue;
1369 #endif
1370
1371                 lang_dir = opendir(lang_path);
1372                 if (!lang_dir)
1373                         continue;
1374
1375                 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1376                         /* Skip those real time scripts: xxxtop.p[yl] */
1377                         if (strstr(script_dirent.d_name, "top."))
1378                                 continue;
1379                         sprintf(scripts_path_array[i], "%s/%s", lang_path,
1380                                 script_dirent.d_name);
1381                         temp = strchr(script_dirent.d_name, '.');
1382                         snprintf(scripts_array[i],
1383                                 (temp - script_dirent.d_name) + 1,
1384                                 "%s", script_dirent.d_name);
1385
1386                         if (check_ev_match(lang_path,
1387                                         scripts_array[i], session))
1388                                 continue;
1389
1390                         i++;
1391                 }
1392                 closedir(lang_dir);
1393         }
1394
1395         closedir(scripts_dir);
1396         perf_session__delete(session);
1397         return i;
1398 }
1399
1400 static char *get_script_path(const char *script_root, const char *suffix)
1401 {
1402         struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1403         char scripts_path[MAXPATHLEN];
1404         char script_path[MAXPATHLEN];
1405         DIR *scripts_dir, *lang_dir;
1406         char lang_path[MAXPATHLEN];
1407         char *__script_root;
1408
1409         snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
1410
1411         scripts_dir = opendir(scripts_path);
1412         if (!scripts_dir)
1413                 return NULL;
1414
1415         for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1416                 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1417                          lang_dirent.d_name);
1418                 lang_dir = opendir(lang_path);
1419                 if (!lang_dir)
1420                         continue;
1421
1422                 for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1423                         __script_root = get_script_root(&script_dirent, suffix);
1424                         if (__script_root && !strcmp(script_root, __script_root)) {
1425                                 free(__script_root);
1426                                 closedir(lang_dir);
1427                                 closedir(scripts_dir);
1428                                 snprintf(script_path, MAXPATHLEN, "%s/%s",
1429                                          lang_path, script_dirent.d_name);
1430                                 return strdup(script_path);
1431                         }
1432                         free(__script_root);
1433                 }
1434                 closedir(lang_dir);
1435         }
1436         closedir(scripts_dir);
1437
1438         return NULL;
1439 }
1440
1441 static bool is_top_script(const char *script_path)
1442 {
1443         return ends_with(script_path, "top") == NULL ? false : true;
1444 }
1445
1446 static int has_required_arg(char *script_path)
1447 {
1448         struct script_desc *desc;
1449         int n_args = 0;
1450         char *p;
1451
1452         desc = script_desc__new(NULL);
1453
1454         if (read_script_info(desc, script_path))
1455                 goto out;
1456
1457         if (!desc->args)
1458                 goto out;
1459
1460         for (p = desc->args; *p; p++)
1461                 if (*p == '<')
1462                         n_args++;
1463 out:
1464         script_desc__delete(desc);
1465
1466         return n_args;
1467 }
1468
1469 static int have_cmd(int argc, const char **argv)
1470 {
1471         char **__argv = malloc(sizeof(const char *) * argc);
1472
1473         if (!__argv) {
1474                 pr_err("malloc failed\n");
1475                 return -1;
1476         }
1477
1478         memcpy(__argv, argv, sizeof(const char *) * argc);
1479         argc = parse_options(argc, (const char **)__argv, record_options,
1480                              NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1481         free(__argv);
1482
1483         system_wide = (argc == 0);
1484
1485         return 0;
1486 }
1487
1488 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1489 {
1490         bool show_full_info = false;
1491         bool header = false;
1492         bool header_only = false;
1493         bool script_started = false;
1494         char *rec_script_path = NULL;
1495         char *rep_script_path = NULL;
1496         struct perf_session *session;
1497         char *script_path = NULL;
1498         const char **__argv;
1499         int i, j, err = 0;
1500         struct perf_script script = {
1501                 .tool = {
1502                         .sample          = process_sample_event,
1503                         .mmap            = perf_event__process_mmap,
1504                         .mmap2           = perf_event__process_mmap2,
1505                         .comm            = perf_event__process_comm,
1506                         .exit            = perf_event__process_exit,
1507                         .fork            = perf_event__process_fork,
1508                         .attr            = process_attr,
1509                         .tracing_data    = perf_event__process_tracing_data,
1510                         .build_id        = perf_event__process_build_id,
1511                         .ordered_events  = true,
1512                         .ordering_requires_timestamps = true,
1513                 },
1514         };
1515         const struct option options[] = {
1516         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1517                     "dump raw trace in ASCII"),
1518         OPT_INCR('v', "verbose", &verbose,
1519                  "be more verbose (show symbol address, etc)"),
1520         OPT_BOOLEAN('L', "Latency", &latency_format,
1521                     "show latency attributes (irqs/preemption disabled, etc)"),
1522         OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1523                            list_available_scripts),
1524         OPT_CALLBACK('s', "script", NULL, "name",
1525                      "script file name (lang:script name, script name, or *)",
1526                      parse_scriptname),
1527         OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1528                    "generate perf-script.xx script in specified language"),
1529         OPT_STRING('i', "input", &input_name, "file", "input file name"),
1530         OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1531                    "do various checks like samples ordering and lost events"),
1532         OPT_BOOLEAN(0, "header", &header, "Show data header."),
1533         OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
1534         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1535                    "file", "vmlinux pathname"),
1536         OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1537                    "file", "kallsyms pathname"),
1538         OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
1539                     "When printing symbols do not display call chain"),
1540         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1541                     "Look for files with symbols relative to this directory"),
1542         OPT_CALLBACK('f', "fields", NULL, "str",
1543                      "comma separated output fields prepend with 'type:'. "
1544                      "Valid types: hw,sw,trace,raw. "
1545                      "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1546                      "addr,symoff", parse_output_fields),
1547         OPT_BOOLEAN('a', "all-cpus", &system_wide,
1548                     "system-wide collection from all CPUs"),
1549         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1550                    "only consider these symbols"),
1551         OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1552         OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1553                    "only display events for these comms"),
1554         OPT_BOOLEAN('I', "show-info", &show_full_info,
1555                     "display extended information from perf.data file"),
1556         OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
1557                     "Show the path of [kernel.kallsyms]"),
1558         OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
1559                     "Show the fork/comm/exit events"),
1560         OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
1561                     "Show the mmap events"),
1562         OPT_END()
1563         };
1564         const char * const script_usage[] = {
1565                 "perf script [<options>]",
1566                 "perf script [<options>] record <script> [<record-options>] <command>",
1567                 "perf script [<options>] report <script> [script-args]",
1568                 "perf script [<options>] <script> [<record-options>] <command>",
1569                 "perf script [<options>] <top-script> [script-args]",
1570                 NULL
1571         };
1572         struct perf_data_file file = {
1573                 .mode = PERF_DATA_MODE_READ,
1574         };
1575
1576         setup_scripting();
1577
1578         argc = parse_options(argc, argv, options, script_usage,
1579                              PARSE_OPT_STOP_AT_NON_OPTION);
1580
1581         file.path = input_name;
1582
1583         if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
1584                 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
1585                 if (!rec_script_path)
1586                         return cmd_record(argc, argv, NULL);
1587         }
1588
1589         if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
1590                 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
1591                 if (!rep_script_path) {
1592                         fprintf(stderr,
1593                                 "Please specify a valid report script"
1594                                 "(see 'perf script -l' for listing)\n");
1595                         return -1;
1596                 }
1597         }
1598
1599         /* make sure PERF_EXEC_PATH is set for scripts */
1600         perf_set_argv_exec_path(perf_exec_path());
1601
1602         if (argc && !script_name && !rec_script_path && !rep_script_path) {
1603                 int live_pipe[2];
1604                 int rep_args;
1605                 pid_t pid;
1606
1607                 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
1608                 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
1609
1610                 if (!rec_script_path && !rep_script_path) {
1611                         fprintf(stderr, " Couldn't find script %s\n\n See perf"
1612                                 " script -l for available scripts.\n", argv[0]);
1613                         usage_with_options(script_usage, options);
1614                 }
1615
1616                 if (is_top_script(argv[0])) {
1617                         rep_args = argc - 1;
1618                 } else {
1619                         int rec_args;
1620
1621                         rep_args = has_required_arg(rep_script_path);
1622                         rec_args = (argc - 1) - rep_args;
1623                         if (rec_args < 0) {
1624                                 fprintf(stderr, " %s script requires options."
1625                                         "\n\n See perf script -l for available "
1626                                         "scripts and options.\n", argv[0]);
1627                                 usage_with_options(script_usage, options);
1628                         }
1629                 }
1630
1631                 if (pipe(live_pipe) < 0) {
1632                         perror("failed to create pipe");
1633                         return -1;
1634                 }
1635
1636                 pid = fork();
1637                 if (pid < 0) {
1638                         perror("failed to fork");
1639                         return -1;
1640                 }
1641
1642                 if (!pid) {
1643                         j = 0;
1644
1645                         dup2(live_pipe[1], 1);
1646                         close(live_pipe[0]);
1647
1648                         if (is_top_script(argv[0])) {
1649                                 system_wide = true;
1650                         } else if (!system_wide) {
1651                                 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
1652                                         err = -1;
1653                                         goto out;
1654                                 }
1655                         }
1656
1657                         __argv = malloc((argc + 6) * sizeof(const char *));
1658                         if (!__argv) {
1659                                 pr_err("malloc failed\n");
1660                                 err = -ENOMEM;
1661                                 goto out;
1662                         }
1663
1664                         __argv[j++] = "/bin/sh";
1665                         __argv[j++] = rec_script_path;
1666                         if (system_wide)
1667                                 __argv[j++] = "-a";
1668                         __argv[j++] = "-q";
1669                         __argv[j++] = "-o";
1670                         __argv[j++] = "-";
1671                         for (i = rep_args + 1; i < argc; i++)
1672                                 __argv[j++] = argv[i];
1673                         __argv[j++] = NULL;
1674
1675                         execvp("/bin/sh", (char **)__argv);
1676                         free(__argv);
1677                         exit(-1);
1678                 }
1679
1680                 dup2(live_pipe[0], 0);
1681                 close(live_pipe[1]);
1682
1683                 __argv = malloc((argc + 4) * sizeof(const char *));
1684                 if (!__argv) {
1685                         pr_err("malloc failed\n");
1686                         err = -ENOMEM;
1687                         goto out;
1688                 }
1689
1690                 j = 0;
1691                 __argv[j++] = "/bin/sh";
1692                 __argv[j++] = rep_script_path;
1693                 for (i = 1; i < rep_args + 1; i++)
1694                         __argv[j++] = argv[i];
1695                 __argv[j++] = "-i";
1696                 __argv[j++] = "-";
1697                 __argv[j++] = NULL;
1698
1699                 execvp("/bin/sh", (char **)__argv);
1700                 free(__argv);
1701                 exit(-1);
1702         }
1703
1704         if (rec_script_path)
1705                 script_path = rec_script_path;
1706         if (rep_script_path)
1707                 script_path = rep_script_path;
1708
1709         if (script_path) {
1710                 j = 0;
1711
1712                 if (!rec_script_path)
1713                         system_wide = false;
1714                 else if (!system_wide) {
1715                         if (have_cmd(argc - 1, &argv[1]) != 0) {
1716                                 err = -1;
1717                                 goto out;
1718                         }
1719                 }
1720
1721                 __argv = malloc((argc + 2) * sizeof(const char *));
1722                 if (!__argv) {
1723                         pr_err("malloc failed\n");
1724                         err = -ENOMEM;
1725                         goto out;
1726                 }
1727
1728                 __argv[j++] = "/bin/sh";
1729                 __argv[j++] = script_path;
1730                 if (system_wide)
1731                         __argv[j++] = "-a";
1732                 for (i = 2; i < argc; i++)
1733                         __argv[j++] = argv[i];
1734                 __argv[j++] = NULL;
1735
1736                 execvp("/bin/sh", (char **)__argv);
1737                 free(__argv);
1738                 exit(-1);
1739         }
1740
1741         if (!script_name)
1742                 setup_pager();
1743
1744         session = perf_session__new(&file, false, &script.tool);
1745         if (session == NULL)
1746                 return -1;
1747
1748         if (header || header_only) {
1749                 perf_session__fprintf_info(session, stdout, show_full_info);
1750                 if (header_only)
1751                         goto out_delete;
1752         }
1753
1754         if (symbol__init(&session->header.env) < 0)
1755                 goto out_delete;
1756
1757         script.session = session;
1758
1759         if (cpu_list) {
1760                 err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
1761                 if (err < 0)
1762                         goto out_delete;
1763         }
1764
1765         if (!no_callchain)
1766                 symbol_conf.use_callchain = true;
1767         else
1768                 symbol_conf.use_callchain = false;
1769
1770         if (generate_script_lang) {
1771                 struct stat perf_stat;
1772                 int input;
1773
1774                 if (output_set_by_user()) {
1775                         fprintf(stderr,
1776                                 "custom fields not supported for generated scripts");
1777                         err = -EINVAL;
1778                         goto out_delete;
1779                 }
1780
1781                 input = open(file.path, O_RDONLY);      /* input_name */
1782                 if (input < 0) {
1783                         err = -errno;
1784                         perror("failed to open file");
1785                         goto out_delete;
1786                 }
1787
1788                 err = fstat(input, &perf_stat);
1789                 if (err < 0) {
1790                         perror("failed to stat file");
1791                         goto out_delete;
1792                 }
1793
1794                 if (!perf_stat.st_size) {
1795                         fprintf(stderr, "zero-sized file, nothing to do!\n");
1796                         goto out_delete;
1797                 }
1798
1799                 scripting_ops = script_spec__lookup(generate_script_lang);
1800                 if (!scripting_ops) {
1801                         fprintf(stderr, "invalid language specifier");
1802                         err = -ENOENT;
1803                         goto out_delete;
1804                 }
1805
1806                 err = scripting_ops->generate_script(session->tevent.pevent,
1807                                                      "perf-script");
1808                 goto out_delete;
1809         }
1810
1811         if (script_name) {
1812                 err = scripting_ops->start_script(script_name, argc, argv);
1813                 if (err)
1814                         goto out_delete;
1815                 pr_debug("perf script started with script %s\n\n", script_name);
1816                 script_started = true;
1817         }
1818
1819
1820         err = perf_session__check_output_opt(session);
1821         if (err < 0)
1822                 goto out_delete;
1823
1824         err = __cmd_script(&script);
1825
1826         flush_scripting();
1827
1828 out_delete:
1829         perf_session__delete(session);
1830
1831         if (script_started)
1832                 cleanup_scripting();
1833 out:
1834         return err;
1835 }