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[deliverable/linux.git] / tools / perf / builtin-stat.c
1 /*
2 * builtin-stat.c
3 *
4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
6 *
7 * Sample output:
8
9 $ perf stat ~/hackbench 10
10 Time: 0.104
11
12 Performance counter stats for '/home/mingo/hackbench':
13
14 1255.538611 task clock ticks # 10.143 CPU utilization factor
15 54011 context switches # 0.043 M/sec
16 385 CPU migrations # 0.000 M/sec
17 17755 pagefaults # 0.014 M/sec
18 3808323185 CPU cycles # 3033.219 M/sec
19 1575111190 instructions # 1254.530 M/sec
20 17367895 cache references # 13.833 M/sec
21 7674421 cache misses # 6.112 M/sec
22
23 Wall-clock time elapsed: 123.786620 msecs
24
25 *
26 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
27 *
28 * Improvements and fixes by:
29 *
30 * Arjan van de Ven <arjan@linux.intel.com>
31 * Yanmin Zhang <yanmin.zhang@intel.com>
32 * Wu Fengguang <fengguang.wu@intel.com>
33 * Mike Galbraith <efault@gmx.de>
34 * Paul Mackerras <paulus@samba.org>
35 * Jaswinder Singh Rajput <jaswinder@kernel.org>
36 *
37 * Released under the GPL v2. (and only v2, not any later version)
38 */
39
40 #include "perf.h"
41 #include "builtin.h"
42 #include "util/util.h"
43 #include "util/parse-options.h"
44 #include "util/parse-events.h"
45 #include "util/event.h"
46 #include "util/evlist.h"
47 #include "util/evsel.h"
48 #include "util/debug.h"
49 #include "util/header.h"
50 #include "util/cpumap.h"
51 #include "util/thread.h"
52
53 #include <sys/prctl.h>
54 #include <math.h>
55 #include <locale.h>
56
57 #define DEFAULT_SEPARATOR " "
58
59 static struct perf_event_attr default_attrs[] = {
60
61 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
62 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
63 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
64 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
65
66 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
67 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
68 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
69 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
70 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_REFERENCES },
71 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_MISSES },
72
73 };
74
75 struct perf_evlist *evsel_list;
76
77 static bool system_wide = false;
78 static struct cpu_map *cpus;
79 static int run_idx = 0;
80
81 static int run_count = 1;
82 static bool no_inherit = false;
83 static bool scale = true;
84 static bool no_aggr = false;
85 static pid_t target_pid = -1;
86 static pid_t target_tid = -1;
87 static struct thread_map *threads;
88 static pid_t child_pid = -1;
89 static bool null_run = false;
90 static bool big_num = true;
91 static int big_num_opt = -1;
92 static const char *cpu_list;
93 static const char *csv_sep = NULL;
94 static bool csv_output = false;
95
96 static volatile int done = 0;
97
98 struct stats
99 {
100 double n, mean, M2;
101 };
102
103 struct perf_stat {
104 struct stats res_stats[3];
105 };
106
107 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
108 {
109 evsel->priv = zalloc(sizeof(struct perf_stat));
110 return evsel->priv == NULL ? -ENOMEM : 0;
111 }
112
113 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
114 {
115 free(evsel->priv);
116 evsel->priv = NULL;
117 }
118
119 static void update_stats(struct stats *stats, u64 val)
120 {
121 double delta;
122
123 stats->n++;
124 delta = val - stats->mean;
125 stats->mean += delta / stats->n;
126 stats->M2 += delta*(val - stats->mean);
127 }
128
129 static double avg_stats(struct stats *stats)
130 {
131 return stats->mean;
132 }
133
134 /*
135 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
136 *
137 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
138 * s^2 = -------------------------------
139 * n - 1
140 *
141 * http://en.wikipedia.org/wiki/Stddev
142 *
143 * The std dev of the mean is related to the std dev by:
144 *
145 * s
146 * s_mean = -------
147 * sqrt(n)
148 *
149 */
150 static double stddev_stats(struct stats *stats)
151 {
152 double variance = stats->M2 / (stats->n - 1);
153 double variance_mean = variance / stats->n;
154
155 return sqrt(variance_mean);
156 }
157
158 struct stats runtime_nsecs_stats[MAX_NR_CPUS];
159 struct stats runtime_cycles_stats[MAX_NR_CPUS];
160 struct stats runtime_branches_stats[MAX_NR_CPUS];
161 struct stats walltime_nsecs_stats;
162
163 static int create_perf_stat_counter(struct perf_evsel *evsel)
164 {
165 struct perf_event_attr *attr = &evsel->attr;
166
167 if (scale)
168 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
169 PERF_FORMAT_TOTAL_TIME_RUNNING;
170
171 if (system_wide)
172 return perf_evsel__open_per_cpu(evsel, cpus, false, false);
173
174 attr->inherit = !no_inherit;
175 if (target_pid == -1 && target_tid == -1) {
176 attr->disabled = 1;
177 attr->enable_on_exec = 1;
178 }
179
180 return perf_evsel__open_per_thread(evsel, threads, false, false);
181 }
182
183 /*
184 * Does the counter have nsecs as a unit?
185 */
186 static inline int nsec_counter(struct perf_evsel *evsel)
187 {
188 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
189 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
190 return 1;
191
192 return 0;
193 }
194
195 /*
196 * Read out the results of a single counter:
197 * aggregate counts across CPUs in system-wide mode
198 */
199 static int read_counter_aggr(struct perf_evsel *counter)
200 {
201 struct perf_stat *ps = counter->priv;
202 u64 *count = counter->counts->aggr.values;
203 int i;
204
205 if (__perf_evsel__read(counter, cpus->nr, threads->nr, scale) < 0)
206 return -1;
207
208 for (i = 0; i < 3; i++)
209 update_stats(&ps->res_stats[i], count[i]);
210
211 if (verbose) {
212 fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
213 event_name(counter), count[0], count[1], count[2]);
214 }
215
216 /*
217 * Save the full runtime - to allow normalization during printout:
218 */
219 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
220 update_stats(&runtime_nsecs_stats[0], count[0]);
221 if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
222 update_stats(&runtime_cycles_stats[0], count[0]);
223 if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
224 update_stats(&runtime_branches_stats[0], count[0]);
225
226 return 0;
227 }
228
229 /*
230 * Read out the results of a single counter:
231 * do not aggregate counts across CPUs in system-wide mode
232 */
233 static int read_counter(struct perf_evsel *counter)
234 {
235 u64 *count;
236 int cpu;
237
238 for (cpu = 0; cpu < cpus->nr; cpu++) {
239 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
240 return -1;
241
242 count = counter->counts->cpu[cpu].values;
243
244 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
245 update_stats(&runtime_nsecs_stats[cpu], count[0]);
246 if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
247 update_stats(&runtime_cycles_stats[cpu], count[0]);
248 if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
249 update_stats(&runtime_branches_stats[cpu], count[0]);
250 }
251
252 return 0;
253 }
254
255 static int run_perf_stat(int argc __used, const char **argv)
256 {
257 unsigned long long t0, t1;
258 struct perf_evsel *counter;
259 int status = 0;
260 int child_ready_pipe[2], go_pipe[2];
261 const bool forks = (argc > 0);
262 char buf;
263
264 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
265 perror("failed to create pipes");
266 exit(1);
267 }
268
269 if (forks) {
270 if ((child_pid = fork()) < 0)
271 perror("failed to fork");
272
273 if (!child_pid) {
274 close(child_ready_pipe[0]);
275 close(go_pipe[1]);
276 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
277
278 /*
279 * Do a dummy execvp to get the PLT entry resolved,
280 * so we avoid the resolver overhead on the real
281 * execvp call.
282 */
283 execvp("", (char **)argv);
284
285 /*
286 * Tell the parent we're ready to go
287 */
288 close(child_ready_pipe[1]);
289
290 /*
291 * Wait until the parent tells us to go.
292 */
293 if (read(go_pipe[0], &buf, 1) == -1)
294 perror("unable to read pipe");
295
296 execvp(argv[0], (char **)argv);
297
298 perror(argv[0]);
299 exit(-1);
300 }
301
302 if (target_tid == -1 && target_pid == -1 && !system_wide)
303 threads->map[0] = child_pid;
304
305 /*
306 * Wait for the child to be ready to exec.
307 */
308 close(child_ready_pipe[1]);
309 close(go_pipe[0]);
310 if (read(child_ready_pipe[0], &buf, 1) == -1)
311 perror("unable to read pipe");
312 close(child_ready_pipe[0]);
313 }
314
315 list_for_each_entry(counter, &evsel_list->entries, node) {
316 if (create_perf_stat_counter(counter) < 0) {
317 if (errno == -EPERM || errno == -EACCES) {
318 error("You may not have permission to collect %sstats.\n"
319 "\t Consider tweaking"
320 " /proc/sys/kernel/perf_event_paranoid or running as root.",
321 system_wide ? "system-wide " : "");
322 } else if (errno == ENOENT) {
323 error("%s event is not supported. ", event_name(counter));
324 } else {
325 error("open_counter returned with %d (%s). "
326 "/bin/dmesg may provide additional information.\n",
327 errno, strerror(errno));
328 }
329 if (child_pid != -1)
330 kill(child_pid, SIGTERM);
331 die("Not all events could be opened.\n");
332 return -1;
333 }
334 }
335
336 /*
337 * Enable counters and exec the command:
338 */
339 t0 = rdclock();
340
341 if (forks) {
342 close(go_pipe[1]);
343 wait(&status);
344 } else {
345 while(!done) sleep(1);
346 }
347
348 t1 = rdclock();
349
350 update_stats(&walltime_nsecs_stats, t1 - t0);
351
352 if (no_aggr) {
353 list_for_each_entry(counter, &evsel_list->entries, node) {
354 read_counter(counter);
355 perf_evsel__close_fd(counter, cpus->nr, 1);
356 }
357 } else {
358 list_for_each_entry(counter, &evsel_list->entries, node) {
359 read_counter_aggr(counter);
360 perf_evsel__close_fd(counter, cpus->nr, threads->nr);
361 }
362 }
363
364 return WEXITSTATUS(status);
365 }
366
367 static void print_noise(struct perf_evsel *evsel, double avg)
368 {
369 struct perf_stat *ps;
370
371 if (run_count == 1)
372 return;
373
374 ps = evsel->priv;
375 fprintf(stderr, " ( +- %7.3f%% )",
376 100 * stddev_stats(&ps->res_stats[0]) / avg);
377 }
378
379 static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
380 {
381 double msecs = avg / 1e6;
382 char cpustr[16] = { '\0', };
383 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-24s";
384
385 if (no_aggr)
386 sprintf(cpustr, "CPU%*d%s",
387 csv_output ? 0 : -4,
388 cpus->map[cpu], csv_sep);
389
390 fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel));
391
392 if (csv_output)
393 return;
394
395 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
396 fprintf(stderr, " # %10.3f CPUs ",
397 avg / avg_stats(&walltime_nsecs_stats));
398 }
399
400 static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
401 {
402 double total, ratio = 0.0;
403 char cpustr[16] = { '\0', };
404 const char *fmt;
405
406 if (csv_output)
407 fmt = "%s%.0f%s%s";
408 else if (big_num)
409 fmt = "%s%'18.0f%s%-24s";
410 else
411 fmt = "%s%18.0f%s%-24s";
412
413 if (no_aggr)
414 sprintf(cpustr, "CPU%*d%s",
415 csv_output ? 0 : -4,
416 cpus->map[cpu], csv_sep);
417 else
418 cpu = 0;
419
420 fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel));
421
422 if (csv_output)
423 return;
424
425 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
426 total = avg_stats(&runtime_cycles_stats[cpu]);
427
428 if (total)
429 ratio = avg / total;
430
431 fprintf(stderr, " # %10.3f IPC ", ratio);
432 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
433 runtime_branches_stats[cpu].n != 0) {
434 total = avg_stats(&runtime_branches_stats[cpu]);
435
436 if (total)
437 ratio = avg * 100 / total;
438
439 fprintf(stderr, " # %10.3f %% ", ratio);
440
441 } else if (runtime_nsecs_stats[cpu].n != 0) {
442 total = avg_stats(&runtime_nsecs_stats[cpu]);
443
444 if (total)
445 ratio = 1000.0 * avg / total;
446
447 fprintf(stderr, " # %10.3f M/sec", ratio);
448 }
449 }
450
451 /*
452 * Print out the results of a single counter:
453 * aggregated counts in system-wide mode
454 */
455 static void print_counter_aggr(struct perf_evsel *counter)
456 {
457 struct perf_stat *ps = counter->priv;
458 double avg = avg_stats(&ps->res_stats[0]);
459 int scaled = counter->counts->scaled;
460
461 if (scaled == -1) {
462 fprintf(stderr, "%*s%s%-24s\n",
463 csv_output ? 0 : 18,
464 "<not counted>", csv_sep, event_name(counter));
465 return;
466 }
467
468 if (nsec_counter(counter))
469 nsec_printout(-1, counter, avg);
470 else
471 abs_printout(-1, counter, avg);
472
473 if (csv_output) {
474 fputc('\n', stderr);
475 return;
476 }
477
478 print_noise(counter, avg);
479
480 if (scaled) {
481 double avg_enabled, avg_running;
482
483 avg_enabled = avg_stats(&ps->res_stats[1]);
484 avg_running = avg_stats(&ps->res_stats[2]);
485
486 fprintf(stderr, " (scaled from %.2f%%)",
487 100 * avg_running / avg_enabled);
488 }
489
490 fprintf(stderr, "\n");
491 }
492
493 /*
494 * Print out the results of a single counter:
495 * does not use aggregated count in system-wide
496 */
497 static void print_counter(struct perf_evsel *counter)
498 {
499 u64 ena, run, val;
500 int cpu;
501
502 for (cpu = 0; cpu < cpus->nr; cpu++) {
503 val = counter->counts->cpu[cpu].val;
504 ena = counter->counts->cpu[cpu].ena;
505 run = counter->counts->cpu[cpu].run;
506 if (run == 0 || ena == 0) {
507 fprintf(stderr, "CPU%*d%s%*s%s%-24s",
508 csv_output ? 0 : -4,
509 cpus->map[cpu], csv_sep,
510 csv_output ? 0 : 18,
511 "<not counted>", csv_sep,
512 event_name(counter));
513
514 fprintf(stderr, "\n");
515 continue;
516 }
517
518 if (nsec_counter(counter))
519 nsec_printout(cpu, counter, val);
520 else
521 abs_printout(cpu, counter, val);
522
523 if (!csv_output) {
524 print_noise(counter, 1.0);
525
526 if (run != ena) {
527 fprintf(stderr, " (scaled from %.2f%%)",
528 100.0 * run / ena);
529 }
530 }
531 fprintf(stderr, "\n");
532 }
533 }
534
535 static void print_stat(int argc, const char **argv)
536 {
537 struct perf_evsel *counter;
538 int i;
539
540 fflush(stdout);
541
542 if (!csv_output) {
543 fprintf(stderr, "\n");
544 fprintf(stderr, " Performance counter stats for ");
545 if(target_pid == -1 && target_tid == -1) {
546 fprintf(stderr, "\'%s", argv[0]);
547 for (i = 1; i < argc; i++)
548 fprintf(stderr, " %s", argv[i]);
549 } else if (target_pid != -1)
550 fprintf(stderr, "process id \'%d", target_pid);
551 else
552 fprintf(stderr, "thread id \'%d", target_tid);
553
554 fprintf(stderr, "\'");
555 if (run_count > 1)
556 fprintf(stderr, " (%d runs)", run_count);
557 fprintf(stderr, ":\n\n");
558 }
559
560 if (no_aggr) {
561 list_for_each_entry(counter, &evsel_list->entries, node)
562 print_counter(counter);
563 } else {
564 list_for_each_entry(counter, &evsel_list->entries, node)
565 print_counter_aggr(counter);
566 }
567
568 if (!csv_output) {
569 fprintf(stderr, "\n");
570 fprintf(stderr, " %18.9f seconds time elapsed",
571 avg_stats(&walltime_nsecs_stats)/1e9);
572 if (run_count > 1) {
573 fprintf(stderr, " ( +- %7.3f%% )",
574 100*stddev_stats(&walltime_nsecs_stats) /
575 avg_stats(&walltime_nsecs_stats));
576 }
577 fprintf(stderr, "\n\n");
578 }
579 }
580
581 static volatile int signr = -1;
582
583 static void skip_signal(int signo)
584 {
585 if(child_pid == -1)
586 done = 1;
587
588 signr = signo;
589 }
590
591 static void sig_atexit(void)
592 {
593 if (child_pid != -1)
594 kill(child_pid, SIGTERM);
595
596 if (signr == -1)
597 return;
598
599 signal(signr, SIG_DFL);
600 kill(getpid(), signr);
601 }
602
603 static const char * const stat_usage[] = {
604 "perf stat [<options>] [<command>]",
605 NULL
606 };
607
608 static int stat__set_big_num(const struct option *opt __used,
609 const char *s __used, int unset)
610 {
611 big_num_opt = unset ? 0 : 1;
612 return 0;
613 }
614
615 static const struct option options[] = {
616 OPT_CALLBACK('e', "event", &evsel_list, "event",
617 "event selector. use 'perf list' to list available events",
618 parse_events),
619 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
620 "child tasks do not inherit counters"),
621 OPT_INTEGER('p', "pid", &target_pid,
622 "stat events on existing process id"),
623 OPT_INTEGER('t', "tid", &target_tid,
624 "stat events on existing thread id"),
625 OPT_BOOLEAN('a', "all-cpus", &system_wide,
626 "system-wide collection from all CPUs"),
627 OPT_BOOLEAN('c', "scale", &scale,
628 "scale/normalize counters"),
629 OPT_INCR('v', "verbose", &verbose,
630 "be more verbose (show counter open errors, etc)"),
631 OPT_INTEGER('r', "repeat", &run_count,
632 "repeat command and print average + stddev (max: 100)"),
633 OPT_BOOLEAN('n', "null", &null_run,
634 "null run - dont start any counters"),
635 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
636 "print large numbers with thousands\' separators",
637 stat__set_big_num),
638 OPT_STRING('C', "cpu", &cpu_list, "cpu",
639 "list of cpus to monitor in system-wide"),
640 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
641 "disable CPU count aggregation"),
642 OPT_STRING('x', "field-separator", &csv_sep, "separator",
643 "print counts with custom separator"),
644 OPT_END()
645 };
646
647 int cmd_stat(int argc, const char **argv, const char *prefix __used)
648 {
649 struct perf_evsel *pos;
650 int status = -ENOMEM;
651
652 setlocale(LC_ALL, "");
653
654 evsel_list = perf_evlist__new();
655 if (evsel_list == NULL)
656 return -ENOMEM;
657
658 argc = parse_options(argc, argv, options, stat_usage,
659 PARSE_OPT_STOP_AT_NON_OPTION);
660
661 if (csv_sep)
662 csv_output = true;
663 else
664 csv_sep = DEFAULT_SEPARATOR;
665
666 /*
667 * let the spreadsheet do the pretty-printing
668 */
669 if (csv_output) {
670 /* User explicitely passed -B? */
671 if (big_num_opt == 1) {
672 fprintf(stderr, "-B option not supported with -x\n");
673 usage_with_options(stat_usage, options);
674 } else /* Nope, so disable big number formatting */
675 big_num = false;
676 } else if (big_num_opt == 0) /* User passed --no-big-num */
677 big_num = false;
678
679 if (!argc && target_pid == -1 && target_tid == -1)
680 usage_with_options(stat_usage, options);
681 if (run_count <= 0)
682 usage_with_options(stat_usage, options);
683
684 /* no_aggr is for system-wide only */
685 if (no_aggr && !system_wide)
686 usage_with_options(stat_usage, options);
687
688 /* Set attrs and nr_counters if no event is selected and !null_run */
689 if (!null_run && !evsel_list->nr_entries) {
690 size_t c;
691
692 for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) {
693 pos = perf_evsel__new(&default_attrs[c], c);
694 if (pos == NULL)
695 goto out;
696 perf_evlist__add(evsel_list, pos);
697 }
698 }
699
700 if (target_pid != -1)
701 target_tid = target_pid;
702
703 threads = thread_map__new(target_pid, target_tid);
704 if (threads == NULL) {
705 pr_err("Problems finding threads of monitor\n");
706 usage_with_options(stat_usage, options);
707 }
708
709 if (system_wide)
710 cpus = cpu_map__new(cpu_list);
711 else
712 cpus = cpu_map__dummy_new();
713
714 if (cpus == NULL) {
715 perror("failed to parse CPUs map");
716 usage_with_options(stat_usage, options);
717 return -1;
718 }
719
720 list_for_each_entry(pos, &evsel_list->entries, node) {
721 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
722 perf_evsel__alloc_counts(pos, cpus->nr) < 0 ||
723 perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
724 goto out_free_fd;
725 }
726
727 /*
728 * We dont want to block the signals - that would cause
729 * child tasks to inherit that and Ctrl-C would not work.
730 * What we want is for Ctrl-C to work in the exec()-ed
731 * task, but being ignored by perf stat itself:
732 */
733 atexit(sig_atexit);
734 signal(SIGINT, skip_signal);
735 signal(SIGALRM, skip_signal);
736 signal(SIGABRT, skip_signal);
737
738 status = 0;
739 for (run_idx = 0; run_idx < run_count; run_idx++) {
740 if (run_count != 1 && verbose)
741 fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1);
742 status = run_perf_stat(argc, argv);
743 }
744
745 if (status != -1)
746 print_stat(argc, argv);
747 out_free_fd:
748 list_for_each_entry(pos, &evsel_list->entries, node)
749 perf_evsel__free_stat_priv(pos);
750 perf_evlist__delete(evsel_list);
751 out:
752 thread_map__delete(threads);
753 threads = NULL;
754 return status;
755 }
Linux kernel - Deliverables
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