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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[deliverable/linux.git] / tools / perf / builtin-script.c
1 #include "builtin.h"
2
3 #include "perf.h"
4 #include "util/cache.h"
5 #include "util/debug.h"
6 #include <subcmd/exec-cmd.h>
7 #include "util/header.h"
8 #include <subcmd/parse-options.h>
9 #include "util/perf_regs.h"
10 #include "util/session.h"
11 #include "util/tool.h"
12 #include "util/symbol.h"
13 #include "util/thread.h"
14 #include "util/trace-event.h"
15 #include "util/util.h"
16 #include "util/evlist.h"
17 #include "util/evsel.h"
18 #include "util/sort.h"
19 #include "util/data.h"
20 #include "util/auxtrace.h"
21 #include "util/cpumap.h"
22 #include "util/thread_map.h"
23 #include "util/stat.h"
24 #include <linux/bitmap.h>
25 #include <linux/stringify.h>
26 #include "asm/bug.h"
27 #include "util/mem-events.h"
28
29 static char const *script_name;
30 static char const *generate_script_lang;
31 static bool debug_mode;
32 static u64 last_timestamp;
33 static u64 nr_unordered;
34 static bool no_callchain;
35 static bool latency_format;
36 static bool system_wide;
37 static bool print_flags;
38 static bool nanosecs;
39 static const char *cpu_list;
40 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
41 static struct perf_stat_config stat_config;
42
43 unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
44
45 enum perf_output_field {
46 PERF_OUTPUT_COMM = 1U << 0,
47 PERF_OUTPUT_TID = 1U << 1,
48 PERF_OUTPUT_PID = 1U << 2,
49 PERF_OUTPUT_TIME = 1U << 3,
50 PERF_OUTPUT_CPU = 1U << 4,
51 PERF_OUTPUT_EVNAME = 1U << 5,
52 PERF_OUTPUT_TRACE = 1U << 6,
53 PERF_OUTPUT_IP = 1U << 7,
54 PERF_OUTPUT_SYM = 1U << 8,
55 PERF_OUTPUT_DSO = 1U << 9,
56 PERF_OUTPUT_ADDR = 1U << 10,
57 PERF_OUTPUT_SYMOFFSET = 1U << 11,
58 PERF_OUTPUT_SRCLINE = 1U << 12,
59 PERF_OUTPUT_PERIOD = 1U << 13,
60 PERF_OUTPUT_IREGS = 1U << 14,
61 PERF_OUTPUT_BRSTACK = 1U << 15,
62 PERF_OUTPUT_BRSTACKSYM = 1U << 16,
63 PERF_OUTPUT_DATA_SRC = 1U << 17,
64 PERF_OUTPUT_WEIGHT = 1U << 18,
65 PERF_OUTPUT_BPF_OUTPUT = 1U << 19,
66 };
67
68 struct output_option {
69 const char *str;
70 enum perf_output_field field;
71 } all_output_options[] = {
72 {.str = "comm", .field = PERF_OUTPUT_COMM},
73 {.str = "tid", .field = PERF_OUTPUT_TID},
74 {.str = "pid", .field = PERF_OUTPUT_PID},
75 {.str = "time", .field = PERF_OUTPUT_TIME},
76 {.str = "cpu", .field = PERF_OUTPUT_CPU},
77 {.str = "event", .field = PERF_OUTPUT_EVNAME},
78 {.str = "trace", .field = PERF_OUTPUT_TRACE},
79 {.str = "ip", .field = PERF_OUTPUT_IP},
80 {.str = "sym", .field = PERF_OUTPUT_SYM},
81 {.str = "dso", .field = PERF_OUTPUT_DSO},
82 {.str = "addr", .field = PERF_OUTPUT_ADDR},
83 {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
84 {.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
85 {.str = "period", .field = PERF_OUTPUT_PERIOD},
86 {.str = "iregs", .field = PERF_OUTPUT_IREGS},
87 {.str = "brstack", .field = PERF_OUTPUT_BRSTACK},
88 {.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM},
89 {.str = "data_src", .field = PERF_OUTPUT_DATA_SRC},
90 {.str = "weight", .field = PERF_OUTPUT_WEIGHT},
91 {.str = "bpf-output", .field = PERF_OUTPUT_BPF_OUTPUT},
92 };
93
94 /* default set to maintain compatibility with current format */
95 static struct {
96 bool user_set;
97 bool wildcard_set;
98 unsigned int print_ip_opts;
99 u64 fields;
100 u64 invalid_fields;
101 } output[PERF_TYPE_MAX] = {
102
103 [PERF_TYPE_HARDWARE] = {
104 .user_set = false,
105
106 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
107 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
108 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
109 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
110 PERF_OUTPUT_PERIOD,
111
112 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
113 },
114
115 [PERF_TYPE_SOFTWARE] = {
116 .user_set = false,
117
118 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
119 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
120 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
121 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
122 PERF_OUTPUT_PERIOD | PERF_OUTPUT_BPF_OUTPUT,
123
124 .invalid_fields = PERF_OUTPUT_TRACE,
125 },
126
127 [PERF_TYPE_TRACEPOINT] = {
128 .user_set = false,
129
130 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
131 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
132 PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE
133 },
134
135 [PERF_TYPE_RAW] = {
136 .user_set = false,
137
138 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
139 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
140 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
141 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
142 PERF_OUTPUT_PERIOD | PERF_OUTPUT_ADDR |
143 PERF_OUTPUT_DATA_SRC | PERF_OUTPUT_WEIGHT,
144
145 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
146 },
147
148 [PERF_TYPE_BREAKPOINT] = {
149 .user_set = false,
150
151 .fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
152 PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
153 PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
154 PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
155 PERF_OUTPUT_PERIOD,
156
157 .invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
158 },
159 };
160
161 static bool output_set_by_user(void)
162 {
163 int j;
164 for (j = 0; j < PERF_TYPE_MAX; ++j) {
165 if (output[j].user_set)
166 return true;
167 }
168 return false;
169 }
170
171 static const char *output_field2str(enum perf_output_field field)
172 {
173 int i, imax = ARRAY_SIZE(all_output_options);
174 const char *str = "";
175
176 for (i = 0; i < imax; ++i) {
177 if (all_output_options[i].field == field) {
178 str = all_output_options[i].str;
179 break;
180 }
181 }
182 return str;
183 }
184
185 #define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
186
187 static int perf_evsel__do_check_stype(struct perf_evsel *evsel,
188 u64 sample_type, const char *sample_msg,
189 enum perf_output_field field,
190 bool allow_user_set)
191 {
192 struct perf_event_attr *attr = &evsel->attr;
193 int type = attr->type;
194 const char *evname;
195
196 if (attr->sample_type & sample_type)
197 return 0;
198
199 if (output[type].user_set) {
200 if (allow_user_set)
201 return 0;
202 evname = perf_evsel__name(evsel);
203 pr_err("Samples for '%s' event do not have %s attribute set. "
204 "Cannot print '%s' field.\n",
205 evname, sample_msg, output_field2str(field));
206 return -1;
207 }
208
209 /* user did not ask for it explicitly so remove from the default list */
210 output[type].fields &= ~field;
211 evname = perf_evsel__name(evsel);
212 pr_debug("Samples for '%s' event do not have %s attribute set. "
213 "Skipping '%s' field.\n",
214 evname, sample_msg, output_field2str(field));
215
216 return 0;
217 }
218
219 static int perf_evsel__check_stype(struct perf_evsel *evsel,
220 u64 sample_type, const char *sample_msg,
221 enum perf_output_field field)
222 {
223 return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field,
224 false);
225 }
226
227 static int perf_evsel__check_attr(struct perf_evsel *evsel,
228 struct perf_session *session)
229 {
230 struct perf_event_attr *attr = &evsel->attr;
231 bool allow_user_set;
232
233 if (perf_header__has_feat(&session->header, HEADER_STAT))
234 return 0;
235
236 allow_user_set = perf_header__has_feat(&session->header,
237 HEADER_AUXTRACE);
238
239 if (PRINT_FIELD(TRACE) &&
240 !perf_session__has_traces(session, "record -R"))
241 return -EINVAL;
242
243 if (PRINT_FIELD(IP)) {
244 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
245 PERF_OUTPUT_IP))
246 return -EINVAL;
247 }
248
249 if (PRINT_FIELD(ADDR) &&
250 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
251 PERF_OUTPUT_ADDR, allow_user_set))
252 return -EINVAL;
253
254 if (PRINT_FIELD(DATA_SRC) &&
255 perf_evsel__check_stype(evsel, PERF_SAMPLE_DATA_SRC, "DATA_SRC",
256 PERF_OUTPUT_DATA_SRC))
257 return -EINVAL;
258
259 if (PRINT_FIELD(WEIGHT) &&
260 perf_evsel__check_stype(evsel, PERF_SAMPLE_WEIGHT, "WEIGHT",
261 PERF_OUTPUT_WEIGHT))
262 return -EINVAL;
263
264 if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
265 pr_err("Display of symbols requested but neither sample IP nor "
266 "sample address\nis selected. Hence, no addresses to convert "
267 "to symbols.\n");
268 return -EINVAL;
269 }
270 if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
271 pr_err("Display of offsets requested but symbol is not"
272 "selected.\n");
273 return -EINVAL;
274 }
275 if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
276 pr_err("Display of DSO requested but neither sample IP nor "
277 "sample address\nis selected. Hence, no addresses to convert "
278 "to DSO.\n");
279 return -EINVAL;
280 }
281 if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
282 pr_err("Display of source line number requested but sample IP is not\n"
283 "selected. Hence, no address to lookup the source line number.\n");
284 return -EINVAL;
285 }
286
287 if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
288 perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
289 PERF_OUTPUT_TID|PERF_OUTPUT_PID))
290 return -EINVAL;
291
292 if (PRINT_FIELD(TIME) &&
293 perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
294 PERF_OUTPUT_TIME))
295 return -EINVAL;
296
297 if (PRINT_FIELD(CPU) &&
298 perf_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
299 PERF_OUTPUT_CPU, allow_user_set))
300 return -EINVAL;
301
302 if (PRINT_FIELD(PERIOD) &&
303 perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD",
304 PERF_OUTPUT_PERIOD))
305 return -EINVAL;
306
307 if (PRINT_FIELD(IREGS) &&
308 perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS",
309 PERF_OUTPUT_IREGS))
310 return -EINVAL;
311
312 return 0;
313 }
314
315 static void set_print_ip_opts(struct perf_event_attr *attr)
316 {
317 unsigned int type = attr->type;
318
319 output[type].print_ip_opts = 0;
320 if (PRINT_FIELD(IP))
321 output[type].print_ip_opts |= EVSEL__PRINT_IP;
322
323 if (PRINT_FIELD(SYM))
324 output[type].print_ip_opts |= EVSEL__PRINT_SYM;
325
326 if (PRINT_FIELD(DSO))
327 output[type].print_ip_opts |= EVSEL__PRINT_DSO;
328
329 if (PRINT_FIELD(SYMOFFSET))
330 output[type].print_ip_opts |= EVSEL__PRINT_SYMOFFSET;
331
332 if (PRINT_FIELD(SRCLINE))
333 output[type].print_ip_opts |= EVSEL__PRINT_SRCLINE;
334 }
335
336 /*
337 * verify all user requested events exist and the samples
338 * have the expected data
339 */
340 static int perf_session__check_output_opt(struct perf_session *session)
341 {
342 int j;
343 struct perf_evsel *evsel;
344
345 for (j = 0; j < PERF_TYPE_MAX; ++j) {
346 evsel = perf_session__find_first_evtype(session, j);
347
348 /*
349 * even if fields is set to 0 (ie., show nothing) event must
350 * exist if user explicitly includes it on the command line
351 */
352 if (!evsel && output[j].user_set && !output[j].wildcard_set) {
353 pr_err("%s events do not exist. "
354 "Remove corresponding -f option to proceed.\n",
355 event_type(j));
356 return -1;
357 }
358
359 if (evsel && output[j].fields &&
360 perf_evsel__check_attr(evsel, session))
361 return -1;
362
363 if (evsel == NULL)
364 continue;
365
366 set_print_ip_opts(&evsel->attr);
367 }
368
369 if (!no_callchain) {
370 bool use_callchain = false;
371
372 evlist__for_each(session->evlist, evsel) {
373 if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
374 use_callchain = true;
375 break;
376 }
377 }
378 if (!use_callchain)
379 symbol_conf.use_callchain = false;
380 }
381
382 /*
383 * set default for tracepoints to print symbols only
384 * if callchains are present
385 */
386 if (symbol_conf.use_callchain &&
387 !output[PERF_TYPE_TRACEPOINT].user_set) {
388 struct perf_event_attr *attr;
389
390 j = PERF_TYPE_TRACEPOINT;
391 evsel = perf_session__find_first_evtype(session, j);
392 if (evsel == NULL)
393 goto out;
394
395 attr = &evsel->attr;
396
397 if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
398 output[j].fields |= PERF_OUTPUT_IP;
399 output[j].fields |= PERF_OUTPUT_SYM;
400 output[j].fields |= PERF_OUTPUT_DSO;
401 set_print_ip_opts(attr);
402 }
403 }
404
405 out:
406 return 0;
407 }
408
409 static void print_sample_iregs(struct perf_sample *sample,
410 struct perf_event_attr *attr)
411 {
412 struct regs_dump *regs = &sample->intr_regs;
413 uint64_t mask = attr->sample_regs_intr;
414 unsigned i = 0, r;
415
416 if (!regs)
417 return;
418
419 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
420 u64 val = regs->regs[i++];
421 printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
422 }
423 }
424
425 static void print_sample_start(struct perf_sample *sample,
426 struct thread *thread,
427 struct perf_evsel *evsel)
428 {
429 struct perf_event_attr *attr = &evsel->attr;
430 unsigned long secs;
431 unsigned long usecs;
432 unsigned long long nsecs;
433
434 if (PRINT_FIELD(COMM)) {
435 if (latency_format)
436 printf("%8.8s ", thread__comm_str(thread));
437 else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
438 printf("%s ", thread__comm_str(thread));
439 else
440 printf("%16s ", thread__comm_str(thread));
441 }
442
443 if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
444 printf("%5d/%-5d ", sample->pid, sample->tid);
445 else if (PRINT_FIELD(PID))
446 printf("%5d ", sample->pid);
447 else if (PRINT_FIELD(TID))
448 printf("%5d ", sample->tid);
449
450 if (PRINT_FIELD(CPU)) {
451 if (latency_format)
452 printf("%3d ", sample->cpu);
453 else
454 printf("[%03d] ", sample->cpu);
455 }
456
457 if (PRINT_FIELD(TIME)) {
458 nsecs = sample->time;
459 secs = nsecs / NSECS_PER_SEC;
460 nsecs -= secs * NSECS_PER_SEC;
461 usecs = nsecs / NSECS_PER_USEC;
462 if (nanosecs)
463 printf("%5lu.%09llu: ", secs, nsecs);
464 else
465 printf("%5lu.%06lu: ", secs, usecs);
466 }
467 }
468
469 static inline char
470 mispred_str(struct branch_entry *br)
471 {
472 if (!(br->flags.mispred || br->flags.predicted))
473 return '-';
474
475 return br->flags.predicted ? 'P' : 'M';
476 }
477
478 static void print_sample_brstack(struct perf_sample *sample)
479 {
480 struct branch_stack *br = sample->branch_stack;
481 u64 i;
482
483 if (!(br && br->nr))
484 return;
485
486 for (i = 0; i < br->nr; i++) {
487 printf(" 0x%"PRIx64"/0x%"PRIx64"/%c/%c/%c/%d ",
488 br->entries[i].from,
489 br->entries[i].to,
490 mispred_str( br->entries + i),
491 br->entries[i].flags.in_tx? 'X' : '-',
492 br->entries[i].flags.abort? 'A' : '-',
493 br->entries[i].flags.cycles);
494 }
495 }
496
497 static void print_sample_brstacksym(struct perf_sample *sample,
498 struct thread *thread)
499 {
500 struct branch_stack *br = sample->branch_stack;
501 struct addr_location alf, alt;
502 u64 i, from, to;
503
504 if (!(br && br->nr))
505 return;
506
507 for (i = 0; i < br->nr; i++) {
508
509 memset(&alf, 0, sizeof(alf));
510 memset(&alt, 0, sizeof(alt));
511 from = br->entries[i].from;
512 to = br->entries[i].to;
513
514 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
515 if (alf.map)
516 alf.sym = map__find_symbol(alf.map, alf.addr, NULL);
517
518 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
519 if (alt.map)
520 alt.sym = map__find_symbol(alt.map, alt.addr, NULL);
521
522 symbol__fprintf_symname_offs(alf.sym, &alf, stdout);
523 putchar('/');
524 symbol__fprintf_symname_offs(alt.sym, &alt, stdout);
525 printf("/%c/%c/%c/%d ",
526 mispred_str( br->entries + i),
527 br->entries[i].flags.in_tx? 'X' : '-',
528 br->entries[i].flags.abort? 'A' : '-',
529 br->entries[i].flags.cycles);
530 }
531 }
532
533
534 static void print_sample_addr(struct perf_sample *sample,
535 struct thread *thread,
536 struct perf_event_attr *attr)
537 {
538 struct addr_location al;
539
540 printf("%16" PRIx64, sample->addr);
541
542 if (!sample_addr_correlates_sym(attr))
543 return;
544
545 thread__resolve(thread, &al, sample);
546
547 if (PRINT_FIELD(SYM)) {
548 printf(" ");
549 if (PRINT_FIELD(SYMOFFSET))
550 symbol__fprintf_symname_offs(al.sym, &al, stdout);
551 else
552 symbol__fprintf_symname(al.sym, stdout);
553 }
554
555 if (PRINT_FIELD(DSO)) {
556 printf(" (");
557 map__fprintf_dsoname(al.map, stdout);
558 printf(")");
559 }
560 }
561
562 static void print_sample_bts(struct perf_sample *sample,
563 struct perf_evsel *evsel,
564 struct thread *thread,
565 struct addr_location *al)
566 {
567 struct perf_event_attr *attr = &evsel->attr;
568 bool print_srcline_last = false;
569
570 /* print branch_from information */
571 if (PRINT_FIELD(IP)) {
572 unsigned int print_opts = output[attr->type].print_ip_opts;
573 struct callchain_cursor *cursor = NULL;
574
575 if (symbol_conf.use_callchain && sample->callchain &&
576 thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
577 sample, NULL, NULL, scripting_max_stack) == 0)
578 cursor = &callchain_cursor;
579
580 if (cursor == NULL) {
581 putchar(' ');
582 if (print_opts & EVSEL__PRINT_SRCLINE) {
583 print_srcline_last = true;
584 print_opts &= ~EVSEL__PRINT_SRCLINE;
585 }
586 } else
587 putchar('\n');
588
589 sample__fprintf_sym(sample, al, 0, print_opts, cursor, stdout);
590 }
591
592 /* print branch_to information */
593 if (PRINT_FIELD(ADDR) ||
594 ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
595 !output[attr->type].user_set)) {
596 printf(" => ");
597 print_sample_addr(sample, thread, attr);
598 }
599
600 if (print_srcline_last)
601 map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
602
603 printf("\n");
604 }
605
606 static void print_sample_flags(u32 flags)
607 {
608 const char *chars = PERF_IP_FLAG_CHARS;
609 const int n = strlen(PERF_IP_FLAG_CHARS);
610 char str[33];
611 int i, pos = 0;
612
613 for (i = 0; i < n; i++, flags >>= 1) {
614 if (flags & 1)
615 str[pos++] = chars[i];
616 }
617 for (; i < 32; i++, flags >>= 1) {
618 if (flags & 1)
619 str[pos++] = '?';
620 }
621 str[pos] = 0;
622 printf(" %-4s ", str);
623 }
624
625 struct printer_data {
626 int line_no;
627 bool hit_nul;
628 bool is_printable;
629 };
630
631 static void
632 print_sample_bpf_output_printer(enum binary_printer_ops op,
633 unsigned int val,
634 void *extra)
635 {
636 unsigned char ch = (unsigned char)val;
637 struct printer_data *printer_data = extra;
638
639 switch (op) {
640 case BINARY_PRINT_DATA_BEGIN:
641 printf("\n");
642 break;
643 case BINARY_PRINT_LINE_BEGIN:
644 printf("%17s", !printer_data->line_no ? "BPF output:" :
645 " ");
646 break;
647 case BINARY_PRINT_ADDR:
648 printf(" %04x:", val);
649 break;
650 case BINARY_PRINT_NUM_DATA:
651 printf(" %02x", val);
652 break;
653 case BINARY_PRINT_NUM_PAD:
654 printf(" ");
655 break;
656 case BINARY_PRINT_SEP:
657 printf(" ");
658 break;
659 case BINARY_PRINT_CHAR_DATA:
660 if (printer_data->hit_nul && ch)
661 printer_data->is_printable = false;
662
663 if (!isprint(ch)) {
664 printf("%c", '.');
665
666 if (!printer_data->is_printable)
667 break;
668
669 if (ch == '\0')
670 printer_data->hit_nul = true;
671 else
672 printer_data->is_printable = false;
673 } else {
674 printf("%c", ch);
675 }
676 break;
677 case BINARY_PRINT_CHAR_PAD:
678 printf(" ");
679 break;
680 case BINARY_PRINT_LINE_END:
681 printf("\n");
682 printer_data->line_no++;
683 break;
684 case BINARY_PRINT_DATA_END:
685 default:
686 break;
687 }
688 }
689
690 static void print_sample_bpf_output(struct perf_sample *sample)
691 {
692 unsigned int nr_bytes = sample->raw_size;
693 struct printer_data printer_data = {0, false, true};
694
695 print_binary(sample->raw_data, nr_bytes, 8,
696 print_sample_bpf_output_printer, &printer_data);
697
698 if (printer_data.is_printable && printer_data.hit_nul)
699 printf("%17s \"%s\"\n", "BPF string:",
700 (char *)(sample->raw_data));
701 }
702
703 struct perf_script {
704 struct perf_tool tool;
705 struct perf_session *session;
706 bool show_task_events;
707 bool show_mmap_events;
708 bool show_switch_events;
709 bool allocated;
710 struct cpu_map *cpus;
711 struct thread_map *threads;
712 int name_width;
713 };
714
715 static int perf_evlist__max_name_len(struct perf_evlist *evlist)
716 {
717 struct perf_evsel *evsel;
718 int max = 0;
719
720 evlist__for_each(evlist, evsel) {
721 int len = strlen(perf_evsel__name(evsel));
722
723 max = MAX(len, max);
724 }
725
726 return max;
727 }
728
729 static size_t data_src__printf(u64 data_src)
730 {
731 struct mem_info mi = { .data_src.val = data_src };
732 char decode[100];
733 char out[100];
734 static int maxlen;
735 int len;
736
737 perf_script__meminfo_scnprintf(decode, 100, &mi);
738
739 len = scnprintf(out, 100, "%16" PRIx64 " %s", data_src, decode);
740 if (maxlen < len)
741 maxlen = len;
742
743 return printf("%-*s", maxlen, out);
744 }
745
746 static void process_event(struct perf_script *script,
747 struct perf_sample *sample, struct perf_evsel *evsel,
748 struct addr_location *al)
749 {
750 struct thread *thread = al->thread;
751 struct perf_event_attr *attr = &evsel->attr;
752
753 if (output[attr->type].fields == 0)
754 return;
755
756 print_sample_start(sample, thread, evsel);
757
758 if (PRINT_FIELD(PERIOD))
759 printf("%10" PRIu64 " ", sample->period);
760
761 if (PRINT_FIELD(EVNAME)) {
762 const char *evname = perf_evsel__name(evsel);
763
764 if (!script->name_width)
765 script->name_width = perf_evlist__max_name_len(script->session->evlist);
766
767 printf("%*s: ", script->name_width,
768 evname ? evname : "[unknown]");
769 }
770
771 if (print_flags)
772 print_sample_flags(sample->flags);
773
774 if (is_bts_event(attr)) {
775 print_sample_bts(sample, evsel, thread, al);
776 return;
777 }
778
779 if (PRINT_FIELD(TRACE))
780 event_format__print(evsel->tp_format, sample->cpu,
781 sample->raw_data, sample->raw_size);
782 if (PRINT_FIELD(ADDR))
783 print_sample_addr(sample, thread, attr);
784
785 if (PRINT_FIELD(DATA_SRC))
786 data_src__printf(sample->data_src);
787
788 if (PRINT_FIELD(WEIGHT))
789 printf("%16" PRIu64, sample->weight);
790
791 if (PRINT_FIELD(IP)) {
792 struct callchain_cursor *cursor = NULL;
793
794 if (symbol_conf.use_callchain && sample->callchain &&
795 thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
796 sample, NULL, NULL, scripting_max_stack) == 0)
797 cursor = &callchain_cursor;
798
799 putchar(cursor ? '\n' : ' ');
800 sample__fprintf_sym(sample, al, 0, output[attr->type].print_ip_opts, cursor, stdout);
801 }
802
803 if (PRINT_FIELD(IREGS))
804 print_sample_iregs(sample, attr);
805
806 if (PRINT_FIELD(BRSTACK))
807 print_sample_brstack(sample);
808 else if (PRINT_FIELD(BRSTACKSYM))
809 print_sample_brstacksym(sample, thread);
810
811 if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT))
812 print_sample_bpf_output(sample);
813
814 printf("\n");
815 }
816
817 static struct scripting_ops *scripting_ops;
818
819 static void __process_stat(struct perf_evsel *counter, u64 tstamp)
820 {
821 int nthreads = thread_map__nr(counter->threads);
822 int ncpus = perf_evsel__nr_cpus(counter);
823 int cpu, thread;
824 static int header_printed;
825
826 if (counter->system_wide)
827 nthreads = 1;
828
829 if (!header_printed) {
830 printf("%3s %8s %15s %15s %15s %15s %s\n",
831 "CPU", "THREAD", "VAL", "ENA", "RUN", "TIME", "EVENT");
832 header_printed = 1;
833 }
834
835 for (thread = 0; thread < nthreads; thread++) {
836 for (cpu = 0; cpu < ncpus; cpu++) {
837 struct perf_counts_values *counts;
838
839 counts = perf_counts(counter->counts, cpu, thread);
840
841 printf("%3d %8d %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %s\n",
842 counter->cpus->map[cpu],
843 thread_map__pid(counter->threads, thread),
844 counts->val,
845 counts->ena,
846 counts->run,
847 tstamp,
848 perf_evsel__name(counter));
849 }
850 }
851 }
852
853 static void process_stat(struct perf_evsel *counter, u64 tstamp)
854 {
855 if (scripting_ops && scripting_ops->process_stat)
856 scripting_ops->process_stat(&stat_config, counter, tstamp);
857 else
858 __process_stat(counter, tstamp);
859 }
860
861 static void process_stat_interval(u64 tstamp)
862 {
863 if (scripting_ops && scripting_ops->process_stat_interval)
864 scripting_ops->process_stat_interval(tstamp);
865 }
866
867 static void setup_scripting(void)
868 {
869 setup_perl_scripting();
870 setup_python_scripting();
871 }
872
873 static int flush_scripting(void)
874 {
875 return scripting_ops ? scripting_ops->flush_script() : 0;
876 }
877
878 static int cleanup_scripting(void)
879 {
880 pr_debug("\nperf script stopped\n");
881
882 return scripting_ops ? scripting_ops->stop_script() : 0;
883 }
884
885 static int process_sample_event(struct perf_tool *tool,
886 union perf_event *event,
887 struct perf_sample *sample,
888 struct perf_evsel *evsel,
889 struct machine *machine)
890 {
891 struct perf_script *scr = container_of(tool, struct perf_script, tool);
892 struct addr_location al;
893
894 if (debug_mode) {
895 if (sample->time < last_timestamp) {
896 pr_err("Samples misordered, previous: %" PRIu64
897 " this: %" PRIu64 "\n", last_timestamp,
898 sample->time);
899 nr_unordered++;
900 }
901 last_timestamp = sample->time;
902 return 0;
903 }
904
905 if (machine__resolve(machine, &al, sample) < 0) {
906 pr_err("problem processing %d event, skipping it.\n",
907 event->header.type);
908 return -1;
909 }
910
911 if (al.filtered)
912 goto out_put;
913
914 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
915 goto out_put;
916
917 if (scripting_ops)
918 scripting_ops->process_event(event, sample, evsel, &al);
919 else
920 process_event(scr, sample, evsel, &al);
921
922 out_put:
923 addr_location__put(&al);
924 return 0;
925 }
926
927 static int process_attr(struct perf_tool *tool, union perf_event *event,
928 struct perf_evlist **pevlist)
929 {
930 struct perf_script *scr = container_of(tool, struct perf_script, tool);
931 struct perf_evlist *evlist;
932 struct perf_evsel *evsel, *pos;
933 int err;
934
935 err = perf_event__process_attr(tool, event, pevlist);
936 if (err)
937 return err;
938
939 evlist = *pevlist;
940 evsel = perf_evlist__last(*pevlist);
941
942 if (evsel->attr.type >= PERF_TYPE_MAX)
943 return 0;
944
945 evlist__for_each(evlist, pos) {
946 if (pos->attr.type == evsel->attr.type && pos != evsel)
947 return 0;
948 }
949
950 set_print_ip_opts(&evsel->attr);
951
952 if (evsel->attr.sample_type)
953 err = perf_evsel__check_attr(evsel, scr->session);
954
955 return err;
956 }
957
958 static int process_comm_event(struct perf_tool *tool,
959 union perf_event *event,
960 struct perf_sample *sample,
961 struct machine *machine)
962 {
963 struct thread *thread;
964 struct perf_script *script = container_of(tool, struct perf_script, tool);
965 struct perf_session *session = script->session;
966 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
967 int ret = -1;
968
969 thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
970 if (thread == NULL) {
971 pr_debug("problem processing COMM event, skipping it.\n");
972 return -1;
973 }
974
975 if (perf_event__process_comm(tool, event, sample, machine) < 0)
976 goto out;
977
978 if (!evsel->attr.sample_id_all) {
979 sample->cpu = 0;
980 sample->time = 0;
981 sample->tid = event->comm.tid;
982 sample->pid = event->comm.pid;
983 }
984 print_sample_start(sample, thread, evsel);
985 perf_event__fprintf(event, stdout);
986 ret = 0;
987 out:
988 thread__put(thread);
989 return ret;
990 }
991
992 static int process_fork_event(struct perf_tool *tool,
993 union perf_event *event,
994 struct perf_sample *sample,
995 struct machine *machine)
996 {
997 struct thread *thread;
998 struct perf_script *script = container_of(tool, struct perf_script, tool);
999 struct perf_session *session = script->session;
1000 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1001
1002 if (perf_event__process_fork(tool, event, sample, machine) < 0)
1003 return -1;
1004
1005 thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
1006 if (thread == NULL) {
1007 pr_debug("problem processing FORK event, skipping it.\n");
1008 return -1;
1009 }
1010
1011 if (!evsel->attr.sample_id_all) {
1012 sample->cpu = 0;
1013 sample->time = event->fork.time;
1014 sample->tid = event->fork.tid;
1015 sample->pid = event->fork.pid;
1016 }
1017 print_sample_start(sample, thread, evsel);
1018 perf_event__fprintf(event, stdout);
1019 thread__put(thread);
1020
1021 return 0;
1022 }
1023 static int process_exit_event(struct perf_tool *tool,
1024 union perf_event *event,
1025 struct perf_sample *sample,
1026 struct machine *machine)
1027 {
1028 int err = 0;
1029 struct thread *thread;
1030 struct perf_script *script = container_of(tool, struct perf_script, tool);
1031 struct perf_session *session = script->session;
1032 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1033
1034 thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
1035 if (thread == NULL) {
1036 pr_debug("problem processing EXIT event, skipping it.\n");
1037 return -1;
1038 }
1039
1040 if (!evsel->attr.sample_id_all) {
1041 sample->cpu = 0;
1042 sample->time = 0;
1043 sample->tid = event->fork.tid;
1044 sample->pid = event->fork.pid;
1045 }
1046 print_sample_start(sample, thread, evsel);
1047 perf_event__fprintf(event, stdout);
1048
1049 if (perf_event__process_exit(tool, event, sample, machine) < 0)
1050 err = -1;
1051
1052 thread__put(thread);
1053 return err;
1054 }
1055
1056 static int process_mmap_event(struct perf_tool *tool,
1057 union perf_event *event,
1058 struct perf_sample *sample,
1059 struct machine *machine)
1060 {
1061 struct thread *thread;
1062 struct perf_script *script = container_of(tool, struct perf_script, tool);
1063 struct perf_session *session = script->session;
1064 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1065
1066 if (perf_event__process_mmap(tool, event, sample, machine) < 0)
1067 return -1;
1068
1069 thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
1070 if (thread == NULL) {
1071 pr_debug("problem processing MMAP event, skipping it.\n");
1072 return -1;
1073 }
1074
1075 if (!evsel->attr.sample_id_all) {
1076 sample->cpu = 0;
1077 sample->time = 0;
1078 sample->tid = event->mmap.tid;
1079 sample->pid = event->mmap.pid;
1080 }
1081 print_sample_start(sample, thread, evsel);
1082 perf_event__fprintf(event, stdout);
1083 thread__put(thread);
1084 return 0;
1085 }
1086
1087 static int process_mmap2_event(struct perf_tool *tool,
1088 union perf_event *event,
1089 struct perf_sample *sample,
1090 struct machine *machine)
1091 {
1092 struct thread *thread;
1093 struct perf_script *script = container_of(tool, struct perf_script, tool);
1094 struct perf_session *session = script->session;
1095 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1096
1097 if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
1098 return -1;
1099
1100 thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
1101 if (thread == NULL) {
1102 pr_debug("problem processing MMAP2 event, skipping it.\n");
1103 return -1;
1104 }
1105
1106 if (!evsel->attr.sample_id_all) {
1107 sample->cpu = 0;
1108 sample->time = 0;
1109 sample->tid = event->mmap2.tid;
1110 sample->pid = event->mmap2.pid;
1111 }
1112 print_sample_start(sample, thread, evsel);
1113 perf_event__fprintf(event, stdout);
1114 thread__put(thread);
1115 return 0;
1116 }
1117
1118 static int process_switch_event(struct perf_tool *tool,
1119 union perf_event *event,
1120 struct perf_sample *sample,
1121 struct machine *machine)
1122 {
1123 struct thread *thread;
1124 struct perf_script *script = container_of(tool, struct perf_script, tool);
1125 struct perf_session *session = script->session;
1126 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1127
1128 if (perf_event__process_switch(tool, event, sample, machine) < 0)
1129 return -1;
1130
1131 thread = machine__findnew_thread(machine, sample->pid,
1132 sample->tid);
1133 if (thread == NULL) {
1134 pr_debug("problem processing SWITCH event, skipping it.\n");
1135 return -1;
1136 }
1137
1138 print_sample_start(sample, thread, evsel);
1139 perf_event__fprintf(event, stdout);
1140 thread__put(thread);
1141 return 0;
1142 }
1143
1144 static void sig_handler(int sig __maybe_unused)
1145 {
1146 session_done = 1;
1147 }
1148
1149 static int __cmd_script(struct perf_script *script)
1150 {
1151 int ret;
1152
1153 signal(SIGINT, sig_handler);
1154
1155 /* override event processing functions */
1156 if (script->show_task_events) {
1157 script->tool.comm = process_comm_event;
1158 script->tool.fork = process_fork_event;
1159 script->tool.exit = process_exit_event;
1160 }
1161 if (script->show_mmap_events) {
1162 script->tool.mmap = process_mmap_event;
1163 script->tool.mmap2 = process_mmap2_event;
1164 }
1165 if (script->show_switch_events)
1166 script->tool.context_switch = process_switch_event;
1167
1168 ret = perf_session__process_events(script->session);
1169
1170 if (debug_mode)
1171 pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
1172
1173 return ret;
1174 }
1175
1176 struct script_spec {
1177 struct list_head node;
1178 struct scripting_ops *ops;
1179 char spec[0];
1180 };
1181
1182 static LIST_HEAD(script_specs);
1183
1184 static struct script_spec *script_spec__new(const char *spec,
1185 struct scripting_ops *ops)
1186 {
1187 struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
1188
1189 if (s != NULL) {
1190 strcpy(s->spec, spec);
1191 s->ops = ops;
1192 }
1193
1194 return s;
1195 }
1196
1197 static void script_spec__add(struct script_spec *s)
1198 {
1199 list_add_tail(&s->node, &script_specs);
1200 }
1201
1202 static struct script_spec *script_spec__find(const char *spec)
1203 {
1204 struct script_spec *s;
1205
1206 list_for_each_entry(s, &script_specs, node)
1207 if (strcasecmp(s->spec, spec) == 0)
1208 return s;
1209 return NULL;
1210 }
1211
1212 int script_spec_register(const char *spec, struct scripting_ops *ops)
1213 {
1214 struct script_spec *s;
1215
1216 s = script_spec__find(spec);
1217 if (s)
1218 return -1;
1219
1220 s = script_spec__new(spec, ops);
1221 if (!s)
1222 return -1;
1223 else
1224 script_spec__add(s);
1225
1226 return 0;
1227 }
1228
1229 static struct scripting_ops *script_spec__lookup(const char *spec)
1230 {
1231 struct script_spec *s = script_spec__find(spec);
1232 if (!s)
1233 return NULL;
1234
1235 return s->ops;
1236 }
1237
1238 static void list_available_languages(void)
1239 {
1240 struct script_spec *s;
1241
1242 fprintf(stderr, "\n");
1243 fprintf(stderr, "Scripting language extensions (used in "
1244 "perf script -s [spec:]script.[spec]):\n\n");
1245
1246 list_for_each_entry(s, &script_specs, node)
1247 fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
1248
1249 fprintf(stderr, "\n");
1250 }
1251
1252 static int parse_scriptname(const struct option *opt __maybe_unused,
1253 const char *str, int unset __maybe_unused)
1254 {
1255 char spec[PATH_MAX];
1256 const char *script, *ext;
1257 int len;
1258
1259 if (strcmp(str, "lang") == 0) {
1260 list_available_languages();
1261 exit(0);
1262 }
1263
1264 script = strchr(str, ':');
1265 if (script) {
1266 len = script - str;
1267 if (len >= PATH_MAX) {
1268 fprintf(stderr, "invalid language specifier");
1269 return -1;
1270 }
1271 strncpy(spec, str, len);
1272 spec[len] = '\0';
1273 scripting_ops = script_spec__lookup(spec);
1274 if (!scripting_ops) {
1275 fprintf(stderr, "invalid language specifier");
1276 return -1;
1277 }
1278 script++;
1279 } else {
1280 script = str;
1281 ext = strrchr(script, '.');
1282 if (!ext) {
1283 fprintf(stderr, "invalid script extension");
1284 return -1;
1285 }
1286 scripting_ops = script_spec__lookup(++ext);
1287 if (!scripting_ops) {
1288 fprintf(stderr, "invalid script extension");
1289 return -1;
1290 }
1291 }
1292
1293 script_name = strdup(script);
1294
1295 return 0;
1296 }
1297
1298 static int parse_output_fields(const struct option *opt __maybe_unused,
1299 const char *arg, int unset __maybe_unused)
1300 {
1301 char *tok;
1302 int i, imax = ARRAY_SIZE(all_output_options);
1303 int j;
1304 int rc = 0;
1305 char *str = strdup(arg);
1306 int type = -1;
1307
1308 if (!str)
1309 return -ENOMEM;
1310
1311 /* first word can state for which event type the user is specifying
1312 * the fields. If no type exists, the specified fields apply to all
1313 * event types found in the file minus the invalid fields for a type.
1314 */
1315 tok = strchr(str, ':');
1316 if (tok) {
1317 *tok = '\0';
1318 tok++;
1319 if (!strcmp(str, "hw"))
1320 type = PERF_TYPE_HARDWARE;
1321 else if (!strcmp(str, "sw"))
1322 type = PERF_TYPE_SOFTWARE;
1323 else if (!strcmp(str, "trace"))
1324 type = PERF_TYPE_TRACEPOINT;
1325 else if (!strcmp(str, "raw"))
1326 type = PERF_TYPE_RAW;
1327 else if (!strcmp(str, "break"))
1328 type = PERF_TYPE_BREAKPOINT;
1329 else {
1330 fprintf(stderr, "Invalid event type in field string.\n");
1331 rc = -EINVAL;
1332 goto out;
1333 }
1334
1335 if (output[type].user_set)
1336 pr_warning("Overriding previous field request for %s events.\n",
1337 event_type(type));
1338
1339 output[type].fields = 0;
1340 output[type].user_set = true;
1341 output[type].wildcard_set = false;
1342
1343 } else {
1344 tok = str;
1345 if (strlen(str) == 0) {
1346 fprintf(stderr,
1347 "Cannot set fields to 'none' for all event types.\n");
1348 rc = -EINVAL;
1349 goto out;
1350 }
1351
1352 if (output_set_by_user())
1353 pr_warning("Overriding previous field request for all events.\n");
1354
1355 for (j = 0; j < PERF_TYPE_MAX; ++j) {
1356 output[j].fields = 0;
1357 output[j].user_set = true;
1358 output[j].wildcard_set = true;
1359 }
1360 }
1361
1362 for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) {
1363 for (i = 0; i < imax; ++i) {
1364 if (strcmp(tok, all_output_options[i].str) == 0)
1365 break;
1366 }
1367 if (i == imax && strcmp(tok, "flags") == 0) {
1368 print_flags = true;
1369 continue;
1370 }
1371 if (i == imax) {
1372 fprintf(stderr, "Invalid field requested.\n");
1373 rc = -EINVAL;
1374 goto out;
1375 }
1376
1377 if (type == -1) {
1378 /* add user option to all events types for
1379 * which it is valid
1380 */
1381 for (j = 0; j < PERF_TYPE_MAX; ++j) {
1382 if (output[j].invalid_fields & all_output_options[i].field) {
1383 pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
1384 all_output_options[i].str, event_type(j));
1385 } else
1386 output[j].fields |= all_output_options[i].field;
1387 }
1388 } else {
1389 if (output[type].invalid_fields & all_output_options[i].field) {
1390 fprintf(stderr, "\'%s\' not valid for %s events.\n",
1391 all_output_options[i].str, event_type(type));
1392
1393 rc = -EINVAL;
1394 goto out;
1395 }
1396 output[type].fields |= all_output_options[i].field;
1397 }
1398 }
1399
1400 if (type >= 0) {
1401 if (output[type].fields == 0) {
1402 pr_debug("No fields requested for %s type. "
1403 "Events will not be displayed.\n", event_type(type));
1404 }
1405 }
1406
1407 out:
1408 free(str);
1409 return rc;
1410 }
1411
1412 /* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
1413 static int is_directory(const char *base_path, const struct dirent *dent)
1414 {
1415 char path[PATH_MAX];
1416 struct stat st;
1417
1418 sprintf(path, "%s/%s", base_path, dent->d_name);
1419 if (stat(path, &st))
1420 return 0;
1421
1422 return S_ISDIR(st.st_mode);
1423 }
1424
1425 #define for_each_lang(scripts_path, scripts_dir, lang_dirent) \
1426 while ((lang_dirent = readdir(scripts_dir)) != NULL) \
1427 if ((lang_dirent->d_type == DT_DIR || \
1428 (lang_dirent->d_type == DT_UNKNOWN && \
1429 is_directory(scripts_path, lang_dirent))) && \
1430 (strcmp(lang_dirent->d_name, ".")) && \
1431 (strcmp(lang_dirent->d_name, "..")))
1432
1433 #define for_each_script(lang_path, lang_dir, script_dirent) \
1434 while ((script_dirent = readdir(lang_dir)) != NULL) \
1435 if (script_dirent->d_type != DT_DIR && \
1436 (script_dirent->d_type != DT_UNKNOWN || \
1437 !is_directory(lang_path, script_dirent)))
1438
1439
1440 #define RECORD_SUFFIX "-record"
1441 #define REPORT_SUFFIX "-report"
1442
1443 struct script_desc {
1444 struct list_head node;
1445 char *name;
1446 char *half_liner;
1447 char *args;
1448 };
1449
1450 static LIST_HEAD(script_descs);
1451
1452 static struct script_desc *script_desc__new(const char *name)
1453 {
1454 struct script_desc *s = zalloc(sizeof(*s));
1455
1456 if (s != NULL && name)
1457 s->name = strdup(name);
1458
1459 return s;
1460 }
1461
1462 static void script_desc__delete(struct script_desc *s)
1463 {
1464 zfree(&s->name);
1465 zfree(&s->half_liner);
1466 zfree(&s->args);
1467 free(s);
1468 }
1469
1470 static void script_desc__add(struct script_desc *s)
1471 {
1472 list_add_tail(&s->node, &script_descs);
1473 }
1474
1475 static struct script_desc *script_desc__find(const char *name)
1476 {
1477 struct script_desc *s;
1478
1479 list_for_each_entry(s, &script_descs, node)
1480 if (strcasecmp(s->name, name) == 0)
1481 return s;
1482 return NULL;
1483 }
1484
1485 static struct script_desc *script_desc__findnew(const char *name)
1486 {
1487 struct script_desc *s = script_desc__find(name);
1488
1489 if (s)
1490 return s;
1491
1492 s = script_desc__new(name);
1493 if (!s)
1494 goto out_delete_desc;
1495
1496 script_desc__add(s);
1497
1498 return s;
1499
1500 out_delete_desc:
1501 script_desc__delete(s);
1502
1503 return NULL;
1504 }
1505
1506 static const char *ends_with(const char *str, const char *suffix)
1507 {
1508 size_t suffix_len = strlen(suffix);
1509 const char *p = str;
1510
1511 if (strlen(str) > suffix_len) {
1512 p = str + strlen(str) - suffix_len;
1513 if (!strncmp(p, suffix, suffix_len))
1514 return p;
1515 }
1516
1517 return NULL;
1518 }
1519
1520 static int read_script_info(struct script_desc *desc, const char *filename)
1521 {
1522 char line[BUFSIZ], *p;
1523 FILE *fp;
1524
1525 fp = fopen(filename, "r");
1526 if (!fp)
1527 return -1;
1528
1529 while (fgets(line, sizeof(line), fp)) {
1530 p = ltrim(line);
1531 if (strlen(p) == 0)
1532 continue;
1533 if (*p != '#')
1534 continue;
1535 p++;
1536 if (strlen(p) && *p == '!')
1537 continue;
1538
1539 p = ltrim(p);
1540 if (strlen(p) && p[strlen(p) - 1] == '\n')
1541 p[strlen(p) - 1] = '\0';
1542
1543 if (!strncmp(p, "description:", strlen("description:"))) {
1544 p += strlen("description:");
1545 desc->half_liner = strdup(ltrim(p));
1546 continue;
1547 }
1548
1549 if (!strncmp(p, "args:", strlen("args:"))) {
1550 p += strlen("args:");
1551 desc->args = strdup(ltrim(p));
1552 continue;
1553 }
1554 }
1555
1556 fclose(fp);
1557
1558 return 0;
1559 }
1560
1561 static char *get_script_root(struct dirent *script_dirent, const char *suffix)
1562 {
1563 char *script_root, *str;
1564
1565 script_root = strdup(script_dirent->d_name);
1566 if (!script_root)
1567 return NULL;
1568
1569 str = (char *)ends_with(script_root, suffix);
1570 if (!str) {
1571 free(script_root);
1572 return NULL;
1573 }
1574
1575 *str = '\0';
1576 return script_root;
1577 }
1578
1579 static int list_available_scripts(const struct option *opt __maybe_unused,
1580 const char *s __maybe_unused,
1581 int unset __maybe_unused)
1582 {
1583 struct dirent *script_dirent, *lang_dirent;
1584 char scripts_path[MAXPATHLEN];
1585 DIR *scripts_dir, *lang_dir;
1586 char script_path[MAXPATHLEN];
1587 char lang_path[MAXPATHLEN];
1588 struct script_desc *desc;
1589 char first_half[BUFSIZ];
1590 char *script_root;
1591
1592 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1593
1594 scripts_dir = opendir(scripts_path);
1595 if (!scripts_dir)
1596 return -1;
1597
1598 for_each_lang(scripts_path, scripts_dir, lang_dirent) {
1599 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1600 lang_dirent->d_name);
1601 lang_dir = opendir(lang_path);
1602 if (!lang_dir)
1603 continue;
1604
1605 for_each_script(lang_path, lang_dir, script_dirent) {
1606 script_root = get_script_root(script_dirent, REPORT_SUFFIX);
1607 if (script_root) {
1608 desc = script_desc__findnew(script_root);
1609 snprintf(script_path, MAXPATHLEN, "%s/%s",
1610 lang_path, script_dirent->d_name);
1611 read_script_info(desc, script_path);
1612 free(script_root);
1613 }
1614 }
1615 }
1616
1617 fprintf(stdout, "List of available trace scripts:\n");
1618 list_for_each_entry(desc, &script_descs, node) {
1619 sprintf(first_half, "%s %s", desc->name,
1620 desc->args ? desc->args : "");
1621 fprintf(stdout, " %-36s %s\n", first_half,
1622 desc->half_liner ? desc->half_liner : "");
1623 }
1624
1625 exit(0);
1626 }
1627
1628 /*
1629 * Some scripts specify the required events in their "xxx-record" file,
1630 * this function will check if the events in perf.data match those
1631 * mentioned in the "xxx-record".
1632 *
1633 * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1634 * which is covered well now. And new parsing code should be added to
1635 * cover the future complexing formats like event groups etc.
1636 */
1637 static int check_ev_match(char *dir_name, char *scriptname,
1638 struct perf_session *session)
1639 {
1640 char filename[MAXPATHLEN], evname[128];
1641 char line[BUFSIZ], *p;
1642 struct perf_evsel *pos;
1643 int match, len;
1644 FILE *fp;
1645
1646 sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1647
1648 fp = fopen(filename, "r");
1649 if (!fp)
1650 return -1;
1651
1652 while (fgets(line, sizeof(line), fp)) {
1653 p = ltrim(line);
1654 if (*p == '#')
1655 continue;
1656
1657 while (strlen(p)) {
1658 p = strstr(p, "-e");
1659 if (!p)
1660 break;
1661
1662 p += 2;
1663 p = ltrim(p);
1664 len = strcspn(p, " \t");
1665 if (!len)
1666 break;
1667
1668 snprintf(evname, len + 1, "%s", p);
1669
1670 match = 0;
1671 evlist__for_each(session->evlist, pos) {
1672 if (!strcmp(perf_evsel__name(pos), evname)) {
1673 match = 1;
1674 break;
1675 }
1676 }
1677
1678 if (!match) {
1679 fclose(fp);
1680 return -1;
1681 }
1682 }
1683 }
1684
1685 fclose(fp);
1686 return 0;
1687 }
1688
1689 /*
1690 * Return -1 if none is found, otherwise the actual scripts number.
1691 *
1692 * Currently the only user of this function is the script browser, which
1693 * will list all statically runnable scripts, select one, execute it and
1694 * show the output in a perf browser.
1695 */
1696 int find_scripts(char **scripts_array, char **scripts_path_array)
1697 {
1698 struct dirent *script_dirent, *lang_dirent;
1699 char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1700 DIR *scripts_dir, *lang_dir;
1701 struct perf_session *session;
1702 struct perf_data_file file = {
1703 .path = input_name,
1704 .mode = PERF_DATA_MODE_READ,
1705 };
1706 char *temp;
1707 int i = 0;
1708
1709 session = perf_session__new(&file, false, NULL);
1710 if (!session)
1711 return -1;
1712
1713 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1714
1715 scripts_dir = opendir(scripts_path);
1716 if (!scripts_dir) {
1717 perf_session__delete(session);
1718 return -1;
1719 }
1720
1721 for_each_lang(scripts_path, scripts_dir, lang_dirent) {
1722 snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1723 lang_dirent->d_name);
1724 #ifdef NO_LIBPERL
1725 if (strstr(lang_path, "perl"))
1726 continue;
1727 #endif
1728 #ifdef NO_LIBPYTHON
1729 if (strstr(lang_path, "python"))
1730 continue;
1731 #endif
1732
1733 lang_dir = opendir(lang_path);
1734 if (!lang_dir)
1735 continue;
1736
1737 for_each_script(lang_path, lang_dir, script_dirent) {
1738 /* Skip those real time scripts: xxxtop.p[yl] */
1739 if (strstr(script_dirent->d_name, "top."))
1740 continue;
1741 sprintf(scripts_path_array[i], "%s/%s", lang_path,
1742 script_dirent->d_name);
1743 temp = strchr(script_dirent->d_name, '.');
1744 snprintf(scripts_array[i],
1745 (temp - script_dirent->d_name) + 1,
1746 "%s", script_dirent->d_name);
1747
1748 if (check_ev_match(lang_path,
1749 scripts_array[i], session))
1750 continue;
1751
1752 i++;
1753 }
1754 closedir(lang_dir);
1755 }
1756
1757 closedir(scripts_dir);
1758 perf_session__delete(session);
1759 return i;
1760 }
1761
1762 static char *get_script_path(const char *script_root, const char *suffix)
1763 {
1764 struct dirent *script_dirent, *lang_dirent;
1765 char scripts_path[MAXPATHLEN];
1766 char script_path[MAXPATHLEN];
1767 DIR *scripts_dir, *lang_dir;
1768 char lang_path[MAXPATHLEN];
1769 char *__script_root;
1770
1771 snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1772
1773 scripts_dir = opendir(scripts_path);
1774 if (!scripts_dir)
1775 return NULL;
1776
1777 for_each_lang(scripts_path, scripts_dir, lang_dirent) {
1778 snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1779 lang_dirent->d_name);
1780 lang_dir = opendir(lang_path);
1781 if (!lang_dir)
1782 continue;
1783
1784 for_each_script(lang_path, lang_dir, script_dirent) {
1785 __script_root = get_script_root(script_dirent, suffix);
1786 if (__script_root && !strcmp(script_root, __script_root)) {
1787 free(__script_root);
1788 closedir(lang_dir);
1789 closedir(scripts_dir);
1790 snprintf(script_path, MAXPATHLEN, "%s/%s",
1791 lang_path, script_dirent->d_name);
1792 return strdup(script_path);
1793 }
1794 free(__script_root);
1795 }
1796 closedir(lang_dir);
1797 }
1798 closedir(scripts_dir);
1799
1800 return NULL;
1801 }
1802
1803 static bool is_top_script(const char *script_path)
1804 {
1805 return ends_with(script_path, "top") == NULL ? false : true;
1806 }
1807
1808 static int has_required_arg(char *script_path)
1809 {
1810 struct script_desc *desc;
1811 int n_args = 0;
1812 char *p;
1813
1814 desc = script_desc__new(NULL);
1815
1816 if (read_script_info(desc, script_path))
1817 goto out;
1818
1819 if (!desc->args)
1820 goto out;
1821
1822 for (p = desc->args; *p; p++)
1823 if (*p == '<')
1824 n_args++;
1825 out:
1826 script_desc__delete(desc);
1827
1828 return n_args;
1829 }
1830
1831 static int have_cmd(int argc, const char **argv)
1832 {
1833 char **__argv = malloc(sizeof(const char *) * argc);
1834
1835 if (!__argv) {
1836 pr_err("malloc failed\n");
1837 return -1;
1838 }
1839
1840 memcpy(__argv, argv, sizeof(const char *) * argc);
1841 argc = parse_options(argc, (const char **)__argv, record_options,
1842 NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1843 free(__argv);
1844
1845 system_wide = (argc == 0);
1846
1847 return 0;
1848 }
1849
1850 static void script__setup_sample_type(struct perf_script *script)
1851 {
1852 struct perf_session *session = script->session;
1853 u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
1854
1855 if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
1856 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
1857 (sample_type & PERF_SAMPLE_STACK_USER))
1858 callchain_param.record_mode = CALLCHAIN_DWARF;
1859 else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
1860 callchain_param.record_mode = CALLCHAIN_LBR;
1861 else
1862 callchain_param.record_mode = CALLCHAIN_FP;
1863 }
1864 }
1865
1866 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
1867 union perf_event *event,
1868 struct perf_session *session)
1869 {
1870 struct stat_round_event *round = &event->stat_round;
1871 struct perf_evsel *counter;
1872
1873 evlist__for_each(session->evlist, counter) {
1874 perf_stat_process_counter(&stat_config, counter);
1875 process_stat(counter, round->time);
1876 }
1877
1878 process_stat_interval(round->time);
1879 return 0;
1880 }
1881
1882 static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
1883 union perf_event *event,
1884 struct perf_session *session __maybe_unused)
1885 {
1886 perf_event__read_stat_config(&stat_config, &event->stat_config);
1887 return 0;
1888 }
1889
1890 static int set_maps(struct perf_script *script)
1891 {
1892 struct perf_evlist *evlist = script->session->evlist;
1893
1894 if (!script->cpus || !script->threads)
1895 return 0;
1896
1897 if (WARN_ONCE(script->allocated, "stats double allocation\n"))
1898 return -EINVAL;
1899
1900 perf_evlist__set_maps(evlist, script->cpus, script->threads);
1901
1902 if (perf_evlist__alloc_stats(evlist, true))
1903 return -ENOMEM;
1904
1905 script->allocated = true;
1906 return 0;
1907 }
1908
1909 static
1910 int process_thread_map_event(struct perf_tool *tool,
1911 union perf_event *event,
1912 struct perf_session *session __maybe_unused)
1913 {
1914 struct perf_script *script = container_of(tool, struct perf_script, tool);
1915
1916 if (script->threads) {
1917 pr_warning("Extra thread map event, ignoring.\n");
1918 return 0;
1919 }
1920
1921 script->threads = thread_map__new_event(&event->thread_map);
1922 if (!script->threads)
1923 return -ENOMEM;
1924
1925 return set_maps(script);
1926 }
1927
1928 static
1929 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
1930 union perf_event *event,
1931 struct perf_session *session __maybe_unused)
1932 {
1933 struct perf_script *script = container_of(tool, struct perf_script, tool);
1934
1935 if (script->cpus) {
1936 pr_warning("Extra cpu map event, ignoring.\n");
1937 return 0;
1938 }
1939
1940 script->cpus = cpu_map__new_data(&event->cpu_map.data);
1941 if (!script->cpus)
1942 return -ENOMEM;
1943
1944 return set_maps(script);
1945 }
1946
1947 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1948 {
1949 bool show_full_info = false;
1950 bool header = false;
1951 bool header_only = false;
1952 bool script_started = false;
1953 char *rec_script_path = NULL;
1954 char *rep_script_path = NULL;
1955 struct perf_session *session;
1956 struct itrace_synth_opts itrace_synth_opts = { .set = false, };
1957 char *script_path = NULL;
1958 const char **__argv;
1959 int i, j, err = 0;
1960 struct perf_script script = {
1961 .tool = {
1962 .sample = process_sample_event,
1963 .mmap = perf_event__process_mmap,
1964 .mmap2 = perf_event__process_mmap2,
1965 .comm = perf_event__process_comm,
1966 .exit = perf_event__process_exit,
1967 .fork = perf_event__process_fork,
1968 .attr = process_attr,
1969 .event_update = perf_event__process_event_update,
1970 .tracing_data = perf_event__process_tracing_data,
1971 .build_id = perf_event__process_build_id,
1972 .id_index = perf_event__process_id_index,
1973 .auxtrace_info = perf_event__process_auxtrace_info,
1974 .auxtrace = perf_event__process_auxtrace,
1975 .auxtrace_error = perf_event__process_auxtrace_error,
1976 .stat = perf_event__process_stat_event,
1977 .stat_round = process_stat_round_event,
1978 .stat_config = process_stat_config_event,
1979 .thread_map = process_thread_map_event,
1980 .cpu_map = process_cpu_map_event,
1981 .ordered_events = true,
1982 .ordering_requires_timestamps = true,
1983 },
1984 };
1985 struct perf_data_file file = {
1986 .mode = PERF_DATA_MODE_READ,
1987 };
1988 const struct option options[] = {
1989 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1990 "dump raw trace in ASCII"),
1991 OPT_INCR('v', "verbose", &verbose,
1992 "be more verbose (show symbol address, etc)"),
1993 OPT_BOOLEAN('L', "Latency", &latency_format,
1994 "show latency attributes (irqs/preemption disabled, etc)"),
1995 OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1996 list_available_scripts),
1997 OPT_CALLBACK('s', "script", NULL, "name",
1998 "script file name (lang:script name, script name, or *)",
1999 parse_scriptname),
2000 OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
2001 "generate perf-script.xx script in specified language"),
2002 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2003 OPT_BOOLEAN('d', "debug-mode", &debug_mode,
2004 "do various checks like samples ordering and lost events"),
2005 OPT_BOOLEAN(0, "header", &header, "Show data header."),
2006 OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
2007 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
2008 "file", "vmlinux pathname"),
2009 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
2010 "file", "kallsyms pathname"),
2011 OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
2012 "When printing symbols do not display call chain"),
2013 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
2014 "Look for files with symbols relative to this directory"),
2015 OPT_CALLBACK('F', "fields", NULL, "str",
2016 "comma separated output fields prepend with 'type:'. "
2017 "Valid types: hw,sw,trace,raw. "
2018 "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
2019 "addr,symoff,period,iregs,brstack,brstacksym,flags", parse_output_fields),
2020 OPT_BOOLEAN('a', "all-cpus", &system_wide,
2021 "system-wide collection from all CPUs"),
2022 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
2023 "only consider these symbols"),
2024 OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
2025 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
2026 "only display events for these comms"),
2027 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
2028 "only consider symbols in these pids"),
2029 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
2030 "only consider symbols in these tids"),
2031 OPT_UINTEGER(0, "max-stack", &scripting_max_stack,
2032 "Set the maximum stack depth when parsing the callchain, "
2033 "anything beyond the specified depth will be ignored. "
2034 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
2035 OPT_BOOLEAN('I', "show-info", &show_full_info,
2036 "display extended information from perf.data file"),
2037 OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
2038 "Show the path of [kernel.kallsyms]"),
2039 OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
2040 "Show the fork/comm/exit events"),
2041 OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
2042 "Show the mmap events"),
2043 OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
2044 "Show context switch events (if recorded)"),
2045 OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
2046 OPT_BOOLEAN(0, "ns", &nanosecs,
2047 "Use 9 decimal places when displaying time"),
2048 OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
2049 "Instruction Tracing options",
2050 itrace_parse_synth_opts),
2051 OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
2052 "Show full source file name path for source lines"),
2053 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
2054 "Enable symbol demangling"),
2055 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
2056 "Enable kernel symbol demangling"),
2057
2058 OPT_END()
2059 };
2060 const char * const script_subcommands[] = { "record", "report", NULL };
2061 const char *script_usage[] = {
2062 "perf script [<options>]",
2063 "perf script [<options>] record <script> [<record-options>] <command>",
2064 "perf script [<options>] report <script> [script-args]",
2065 "perf script [<options>] <script> [<record-options>] <command>",
2066 "perf script [<options>] <top-script> [script-args]",
2067 NULL
2068 };
2069
2070 scripting_max_stack = sysctl_perf_event_max_stack;
2071
2072 setup_scripting();
2073
2074 argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
2075 PARSE_OPT_STOP_AT_NON_OPTION);
2076
2077 file.path = input_name;
2078
2079 if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
2080 rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
2081 if (!rec_script_path)
2082 return cmd_record(argc, argv, NULL);
2083 }
2084
2085 if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
2086 rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
2087 if (!rep_script_path) {
2088 fprintf(stderr,
2089 "Please specify a valid report script"
2090 "(see 'perf script -l' for listing)\n");
2091 return -1;
2092 }
2093 }
2094
2095 if (itrace_synth_opts.callchain &&
2096 itrace_synth_opts.callchain_sz > scripting_max_stack)
2097 scripting_max_stack = itrace_synth_opts.callchain_sz;
2098
2099 /* make sure PERF_EXEC_PATH is set for scripts */
2100 set_argv_exec_path(get_argv_exec_path());
2101
2102 if (argc && !script_name && !rec_script_path && !rep_script_path) {
2103 int live_pipe[2];
2104 int rep_args;
2105 pid_t pid;
2106
2107 rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
2108 rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
2109
2110 if (!rec_script_path && !rep_script_path) {
2111 usage_with_options_msg(script_usage, options,
2112 "Couldn't find script `%s'\n\n See perf"
2113 " script -l for available scripts.\n", argv[0]);
2114 }
2115
2116 if (is_top_script(argv[0])) {
2117 rep_args = argc - 1;
2118 } else {
2119 int rec_args;
2120
2121 rep_args = has_required_arg(rep_script_path);
2122 rec_args = (argc - 1) - rep_args;
2123 if (rec_args < 0) {
2124 usage_with_options_msg(script_usage, options,
2125 "`%s' script requires options."
2126 "\n\n See perf script -l for available "
2127 "scripts and options.\n", argv[0]);
2128 }
2129 }
2130
2131 if (pipe(live_pipe) < 0) {
2132 perror("failed to create pipe");
2133 return -1;
2134 }
2135
2136 pid = fork();
2137 if (pid < 0) {
2138 perror("failed to fork");
2139 return -1;
2140 }
2141
2142 if (!pid) {
2143 j = 0;
2144
2145 dup2(live_pipe[1], 1);
2146 close(live_pipe[0]);
2147
2148 if (is_top_script(argv[0])) {
2149 system_wide = true;
2150 } else if (!system_wide) {
2151 if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
2152 err = -1;
2153 goto out;
2154 }
2155 }
2156
2157 __argv = malloc((argc + 6) * sizeof(const char *));
2158 if (!__argv) {
2159 pr_err("malloc failed\n");
2160 err = -ENOMEM;
2161 goto out;
2162 }
2163
2164 __argv[j++] = "/bin/sh";
2165 __argv[j++] = rec_script_path;
2166 if (system_wide)
2167 __argv[j++] = "-a";
2168 __argv[j++] = "-q";
2169 __argv[j++] = "-o";
2170 __argv[j++] = "-";
2171 for (i = rep_args + 1; i < argc; i++)
2172 __argv[j++] = argv[i];
2173 __argv[j++] = NULL;
2174
2175 execvp("/bin/sh", (char **)__argv);
2176 free(__argv);
2177 exit(-1);
2178 }
2179
2180 dup2(live_pipe[0], 0);
2181 close(live_pipe[1]);
2182
2183 __argv = malloc((argc + 4) * sizeof(const char *));
2184 if (!__argv) {
2185 pr_err("malloc failed\n");
2186 err = -ENOMEM;
2187 goto out;
2188 }
2189
2190 j = 0;
2191 __argv[j++] = "/bin/sh";
2192 __argv[j++] = rep_script_path;
2193 for (i = 1; i < rep_args + 1; i++)
2194 __argv[j++] = argv[i];
2195 __argv[j++] = "-i";
2196 __argv[j++] = "-";
2197 __argv[j++] = NULL;
2198
2199 execvp("/bin/sh", (char **)__argv);
2200 free(__argv);
2201 exit(-1);
2202 }
2203
2204 if (rec_script_path)
2205 script_path = rec_script_path;
2206 if (rep_script_path)
2207 script_path = rep_script_path;
2208
2209 if (script_path) {
2210 j = 0;
2211
2212 if (!rec_script_path)
2213 system_wide = false;
2214 else if (!system_wide) {
2215 if (have_cmd(argc - 1, &argv[1]) != 0) {
2216 err = -1;
2217 goto out;
2218 }
2219 }
2220
2221 __argv = malloc((argc + 2) * sizeof(const char *));
2222 if (!__argv) {
2223 pr_err("malloc failed\n");
2224 err = -ENOMEM;
2225 goto out;
2226 }
2227
2228 __argv[j++] = "/bin/sh";
2229 __argv[j++] = script_path;
2230 if (system_wide)
2231 __argv[j++] = "-a";
2232 for (i = 2; i < argc; i++)
2233 __argv[j++] = argv[i];
2234 __argv[j++] = NULL;
2235
2236 execvp("/bin/sh", (char **)__argv);
2237 free(__argv);
2238 exit(-1);
2239 }
2240
2241 if (!script_name)
2242 setup_pager();
2243
2244 session = perf_session__new(&file, false, &script.tool);
2245 if (session == NULL)
2246 return -1;
2247
2248 if (header || header_only) {
2249 perf_session__fprintf_info(session, stdout, show_full_info);
2250 if (header_only)
2251 goto out_delete;
2252 }
2253
2254 if (symbol__init(&session->header.env) < 0)
2255 goto out_delete;
2256
2257 script.session = session;
2258 script__setup_sample_type(&script);
2259
2260 session->itrace_synth_opts = &itrace_synth_opts;
2261
2262 if (cpu_list) {
2263 err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
2264 if (err < 0)
2265 goto out_delete;
2266 }
2267
2268 if (!no_callchain)
2269 symbol_conf.use_callchain = true;
2270 else
2271 symbol_conf.use_callchain = false;
2272
2273 if (session->tevent.pevent &&
2274 pevent_set_function_resolver(session->tevent.pevent,
2275 machine__resolve_kernel_addr,
2276 &session->machines.host) < 0) {
2277 pr_err("%s: failed to set libtraceevent function resolver\n", __func__);
2278 return -1;
2279 }
2280
2281 if (generate_script_lang) {
2282 struct stat perf_stat;
2283 int input;
2284
2285 if (output_set_by_user()) {
2286 fprintf(stderr,
2287 "custom fields not supported for generated scripts");
2288 err = -EINVAL;
2289 goto out_delete;
2290 }
2291
2292 input = open(file.path, O_RDONLY); /* input_name */
2293 if (input < 0) {
2294 err = -errno;
2295 perror("failed to open file");
2296 goto out_delete;
2297 }
2298
2299 err = fstat(input, &perf_stat);
2300 if (err < 0) {
2301 perror("failed to stat file");
2302 goto out_delete;
2303 }
2304
2305 if (!perf_stat.st_size) {
2306 fprintf(stderr, "zero-sized file, nothing to do!\n");
2307 goto out_delete;
2308 }
2309
2310 scripting_ops = script_spec__lookup(generate_script_lang);
2311 if (!scripting_ops) {
2312 fprintf(stderr, "invalid language specifier");
2313 err = -ENOENT;
2314 goto out_delete;
2315 }
2316
2317 err = scripting_ops->generate_script(session->tevent.pevent,
2318 "perf-script");
2319 goto out_delete;
2320 }
2321
2322 if (script_name) {
2323 err = scripting_ops->start_script(script_name, argc, argv);
2324 if (err)
2325 goto out_delete;
2326 pr_debug("perf script started with script %s\n\n", script_name);
2327 script_started = true;
2328 }
2329
2330
2331 err = perf_session__check_output_opt(session);
2332 if (err < 0)
2333 goto out_delete;
2334
2335 err = __cmd_script(&script);
2336
2337 flush_scripting();
2338
2339 out_delete:
2340 perf_evlist__free_stats(session->evlist);
2341 perf_session__delete(session);
2342
2343 if (script_started)
2344 cleanup_scripting();
2345 out:
2346 return err;
2347 }
Linux kernel - Deliverables
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