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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas...
[linux-2.6/cjktty.git] / tools / perf / builtin-stat.c
bloba482a191a0ca3efac6cafe16ec1c827ba70a97f6
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/evsel.h"
47 #include "util/debug.h"
48 #include "util/header.h"
49 #include "util/cpumap.h"
50 #include "util/thread.h"
51
52 #include <sys/prctl.h>
53 #include <math.h>
54 #include <locale.h>
55
56 #define DEFAULT_SEPARATOR " "
57
58 static struct perf_event_attr default_attrs[] = {
59
60 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
61 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
62 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
63 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
64
65 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
66 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
67 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
68 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
69 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_REFERENCES },
70 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_MISSES },
71
72 };
73
74 static bool system_wide = false;
75 static struct cpu_map *cpus;
76 static int run_idx = 0;
77
78 static int run_count = 1;
79 static bool no_inherit = false;
80 static bool scale = true;
81 static bool no_aggr = false;
82 static pid_t target_pid = -1;
83 static pid_t target_tid = -1;
84 static struct thread_map *threads;
85 static pid_t child_pid = -1;
86 static bool null_run = false;
87 static bool big_num = true;
88 static int big_num_opt = -1;
89 static const char *cpu_list;
90 static const char *csv_sep = NULL;
91 static bool csv_output = false;
92
93 static volatile int done = 0;
94
95 struct stats
96 {
97 double n, mean, M2;
98 };
99
100 struct perf_stat {
101 struct stats res_stats[3];
102 };
103
104 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
105 {
106 evsel->priv = zalloc(sizeof(struct perf_stat));
107 return evsel->priv == NULL ? -ENOMEM : 0;
108 }
109
110 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
111 {
112 free(evsel->priv);
113 evsel->priv = NULL;
114 }
115
116 static void update_stats(struct stats *stats, u64 val)
117 {
118 double delta;
119
120 stats->n++;
121 delta = val - stats->mean;
122 stats->mean += delta / stats->n;
123 stats->M2 += delta*(val - stats->mean);
124 }
125
126 static double avg_stats(struct stats *stats)
127 {
128 return stats->mean;
129 }
130
131 /*
132 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
133 *
134 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
135 * s^2 = -------------------------------
136 * n - 1
137 *
138 * http://en.wikipedia.org/wiki/Stddev
139 *
140 * The std dev of the mean is related to the std dev by:
141 *
142 * s
143 * s_mean = -------
144 * sqrt(n)
145 *
146 */
147 static double stddev_stats(struct stats *stats)
148 {
149 double variance = stats->M2 / (stats->n - 1);
150 double variance_mean = variance / stats->n;
151
152 return sqrt(variance_mean);
153 }
154
155 struct stats runtime_nsecs_stats[MAX_NR_CPUS];
156 struct stats runtime_cycles_stats[MAX_NR_CPUS];
157 struct stats runtime_branches_stats[MAX_NR_CPUS];
158 struct stats walltime_nsecs_stats;
159
160 static int create_perf_stat_counter(struct perf_evsel *evsel)
161 {
162 struct perf_event_attr *attr = &evsel->attr;
163
164 if (scale)
165 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
166 PERF_FORMAT_TOTAL_TIME_RUNNING;
167
168 if (system_wide)
169 return perf_evsel__open_per_cpu(evsel, cpus);
170
171 attr->inherit = !no_inherit;
172 if (target_pid == -1 && target_tid == -1) {
173 attr->disabled = 1;
174 attr->enable_on_exec = 1;
175 }
176
177 return perf_evsel__open_per_thread(evsel, threads);
178 }
179
180 /*
181 * Does the counter have nsecs as a unit?
182 */
183 static inline int nsec_counter(struct perf_evsel *evsel)
184 {
185 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
186 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
187 return 1;
188
189 return 0;
190 }
191
192 /*
193 * Read out the results of a single counter:
194 * aggregate counts across CPUs in system-wide mode
195 */
196 static int read_counter_aggr(struct perf_evsel *counter)
197 {
198 struct perf_stat *ps = counter->priv;
199 u64 *count = counter->counts->aggr.values;
200 int i;
201
202 if (__perf_evsel__read(counter, cpus->nr, threads->nr, scale) < 0)
203 return -1;
204
205 for (i = 0; i < 3; i++)
206 update_stats(&ps->res_stats[i], count[i]);
207
208 if (verbose) {
209 fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
210 event_name(counter), count[0], count[1], count[2]);
211 }
212
213 /*
214 * Save the full runtime - to allow normalization during printout:
215 */
216 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
217 update_stats(&runtime_nsecs_stats[0], count[0]);
218 if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
219 update_stats(&runtime_cycles_stats[0], count[0]);
220 if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
221 update_stats(&runtime_branches_stats[0], count[0]);
222
223 return 0;
224 }
225
226 /*
227 * Read out the results of a single counter:
228 * do not aggregate counts across CPUs in system-wide mode
229 */
230 static int read_counter(struct perf_evsel *counter)
231 {
232 u64 *count;
233 int cpu;
234
235 for (cpu = 0; cpu < cpus->nr; cpu++) {
236 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
237 return -1;
238
239 count = counter->counts->cpu[cpu].values;
240
241 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
242 update_stats(&runtime_nsecs_stats[cpu], count[0]);
243 if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
244 update_stats(&runtime_cycles_stats[cpu], count[0]);
245 if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
246 update_stats(&runtime_branches_stats[cpu], count[0]);
247 }
248
249 return 0;
250 }
251
252 static int run_perf_stat(int argc __used, const char **argv)
253 {
254 unsigned long long t0, t1;
255 struct perf_evsel *counter;
256 int status = 0;
257 int child_ready_pipe[2], go_pipe[2];
258 const bool forks = (argc > 0);
259 char buf;
260
261 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
262 perror("failed to create pipes");
263 exit(1);
264 }
265
266 if (forks) {
267 if ((child_pid = fork()) < 0)
268 perror("failed to fork");
269
270 if (!child_pid) {
271 close(child_ready_pipe[0]);
272 close(go_pipe[1]);
273 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
274
275 /*
276 * Do a dummy execvp to get the PLT entry resolved,
277 * so we avoid the resolver overhead on the real
278 * execvp call.
279 */
280 execvp("", (char **)argv);
281
282 /*
283 * Tell the parent we're ready to go
284 */
285 close(child_ready_pipe[1]);
286
287 /*
288 * Wait until the parent tells us to go.
289 */
290 if (read(go_pipe[0], &buf, 1) == -1)
291 perror("unable to read pipe");
292
293 execvp(argv[0], (char **)argv);
294
295 perror(argv[0]);
296 exit(-1);
297 }
298
299 if (target_tid == -1 && target_pid == -1 && !system_wide)
300 threads->map[0] = child_pid;
301
302 /*
303 * Wait for the child to be ready to exec.
304 */
305 close(child_ready_pipe[1]);
306 close(go_pipe[0]);
307 if (read(child_ready_pipe[0], &buf, 1) == -1)
308 perror("unable to read pipe");
309 close(child_ready_pipe[0]);
310 }
311
312 list_for_each_entry(counter, &evsel_list, node) {
313 if (create_perf_stat_counter(counter) < 0) {
314 if (errno == -EPERM || errno == -EACCES) {
315 error("You may not have permission to collect %sstats.\n"
316 "\t Consider tweaking"
317 " /proc/sys/kernel/perf_event_paranoid or running as root.",
318 system_wide ? "system-wide " : "");
319 } else if (errno == ENOENT) {
320 error("%s event is not supported. ", event_name(counter));
321 } else {
322 error("open_counter returned with %d (%s). "
323 "/bin/dmesg may provide additional information.\n",
324 errno, strerror(errno));
325 }
326 if (child_pid != -1)
327 kill(child_pid, SIGTERM);
328 die("Not all events could be opened.\n");
329 return -1;
330 }
331 }
332
333 /*
334 * Enable counters and exec the command:
335 */
336 t0 = rdclock();
337
338 if (forks) {
339 close(go_pipe[1]);
340 wait(&status);
341 } else {
342 while(!done) sleep(1);
343 }
344
345 t1 = rdclock();
346
347 update_stats(&walltime_nsecs_stats, t1 - t0);
348
349 if (no_aggr) {
350 list_for_each_entry(counter, &evsel_list, node) {
351 read_counter(counter);
352 perf_evsel__close_fd(counter, cpus->nr, 1);
353 }
354 } else {
355 list_for_each_entry(counter, &evsel_list, node) {
356 read_counter_aggr(counter);
357 perf_evsel__close_fd(counter, cpus->nr, threads->nr);
358 }
359 }
360
361 return WEXITSTATUS(status);
362 }
363
364 static void print_noise(struct perf_evsel *evsel, double avg)
365 {
366 struct perf_stat *ps;
367
368 if (run_count == 1)
369 return;
370
371 ps = evsel->priv;
372 fprintf(stderr, " ( +- %7.3f%% )",
373 100 * stddev_stats(&ps->res_stats[0]) / avg);
374 }
375
376 static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
377 {
378 double msecs = avg / 1e6;
379 char cpustr[16] = { '\0', };
380 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-24s";
381
382 if (no_aggr)
383 sprintf(cpustr, "CPU%*d%s",
384 csv_output ? 0 : -4,
385 cpus->map[cpu], csv_sep);
386
387 fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel));
388
389 if (csv_output)
390 return;
391
392 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
393 fprintf(stderr, " # %10.3f CPUs ",
394 avg / avg_stats(&walltime_nsecs_stats));
395 }
396
397 static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
398 {
399 double total, ratio = 0.0;
400 char cpustr[16] = { '\0', };
401 const char *fmt;
402
403 if (csv_output)
404 fmt = "%s%.0f%s%s";
405 else if (big_num)
406 fmt = "%s%'18.0f%s%-24s";
407 else
408 fmt = "%s%18.0f%s%-24s";
409
410 if (no_aggr)
411 sprintf(cpustr, "CPU%*d%s",
412 csv_output ? 0 : -4,
413 cpus->map[cpu], csv_sep);
414 else
415 cpu = 0;
416
417 fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel));
418
419 if (csv_output)
420 return;
421
422 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
423 total = avg_stats(&runtime_cycles_stats[cpu]);
424
425 if (total)
426 ratio = avg / total;
427
428 fprintf(stderr, " # %10.3f IPC ", ratio);
429 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
430 runtime_branches_stats[cpu].n != 0) {
431 total = avg_stats(&runtime_branches_stats[cpu]);
432
433 if (total)
434 ratio = avg * 100 / total;
435
436 fprintf(stderr, " # %10.3f %% ", ratio);
437
438 } else if (runtime_nsecs_stats[cpu].n != 0) {
439 total = avg_stats(&runtime_nsecs_stats[cpu]);
440
441 if (total)
442 ratio = 1000.0 * avg / total;
443
444 fprintf(stderr, " # %10.3f M/sec", ratio);
445 }
446 }
447
448 /*
449 * Print out the results of a single counter:
450 * aggregated counts in system-wide mode
451 */
452 static void print_counter_aggr(struct perf_evsel *counter)
453 {
454 struct perf_stat *ps = counter->priv;
455 double avg = avg_stats(&ps->res_stats[0]);
456 int scaled = counter->counts->scaled;
457
458 if (scaled == -1) {
459 fprintf(stderr, "%*s%s%-24s\n",
460 csv_output ? 0 : 18,
461 "<not counted>", csv_sep, event_name(counter));
462 return;
463 }
464
465 if (nsec_counter(counter))
466 nsec_printout(-1, counter, avg);
467 else
468 abs_printout(-1, counter, avg);
469
470 if (csv_output) {
471 fputc('\n', stderr);
472 return;
473 }
474
475 print_noise(counter, avg);
476
477 if (scaled) {
478 double avg_enabled, avg_running;
479
480 avg_enabled = avg_stats(&ps->res_stats[1]);
481 avg_running = avg_stats(&ps->res_stats[2]);
482
483 fprintf(stderr, " (scaled from %.2f%%)",
484 100 * avg_running / avg_enabled);
485 }
486
487 fprintf(stderr, "\n");
488 }
489
490 /*
491 * Print out the results of a single counter:
492 * does not use aggregated count in system-wide
493 */
494 static void print_counter(struct perf_evsel *counter)
495 {
496 u64 ena, run, val;
497 int cpu;
498
499 for (cpu = 0; cpu < cpus->nr; cpu++) {
500 val = counter->counts->cpu[cpu].val;
501 ena = counter->counts->cpu[cpu].ena;
502 run = counter->counts->cpu[cpu].run;
503 if (run == 0 || ena == 0) {
504 fprintf(stderr, "CPU%*d%s%*s%s%-24s",
505 csv_output ? 0 : -4,
506 cpus->map[cpu], csv_sep,
507 csv_output ? 0 : 18,
508 "<not counted>", csv_sep,
509 event_name(counter));
510
511 fprintf(stderr, "\n");
512 continue;
513 }
514
515 if (nsec_counter(counter))
516 nsec_printout(cpu, counter, val);
517 else
518 abs_printout(cpu, counter, val);
519
520 if (!csv_output) {
521 print_noise(counter, 1.0);
522
523 if (run != ena) {
524 fprintf(stderr, " (scaled from %.2f%%)",
525 100.0 * run / ena);
526 }
527 }
528 fprintf(stderr, "\n");
529 }
530 }
531
532 static void print_stat(int argc, const char **argv)
533 {
534 struct perf_evsel *counter;
535 int i;
536
537 fflush(stdout);
538
539 if (!csv_output) {
540 fprintf(stderr, "\n");
541 fprintf(stderr, " Performance counter stats for ");
542 if(target_pid == -1 && target_tid == -1) {
543 fprintf(stderr, "\'%s", argv[0]);
544 for (i = 1; i < argc; i++)
545 fprintf(stderr, " %s", argv[i]);
546 } else if (target_pid != -1)
547 fprintf(stderr, "process id \'%d", target_pid);
548 else
549 fprintf(stderr, "thread id \'%d", target_tid);
550
551 fprintf(stderr, "\'");
552 if (run_count > 1)
553 fprintf(stderr, " (%d runs)", run_count);
554 fprintf(stderr, ":\n\n");
555 }
556
557 if (no_aggr) {
558 list_for_each_entry(counter, &evsel_list, node)
559 print_counter(counter);
560 } else {
561 list_for_each_entry(counter, &evsel_list, node)
562 print_counter_aggr(counter);
563 }
564
565 if (!csv_output) {
566 fprintf(stderr, "\n");
567 fprintf(stderr, " %18.9f seconds time elapsed",
568 avg_stats(&walltime_nsecs_stats)/1e9);
569 if (run_count > 1) {
570 fprintf(stderr, " ( +- %7.3f%% )",
571 100*stddev_stats(&walltime_nsecs_stats) /
572 avg_stats(&walltime_nsecs_stats));
573 }
574 fprintf(stderr, "\n\n");
575 }
576 }
577
578 static volatile int signr = -1;
579
580 static void skip_signal(int signo)
581 {
582 if(child_pid == -1)
583 done = 1;
584
585 signr = signo;
586 }
587
588 static void sig_atexit(void)
589 {
590 if (child_pid != -1)
591 kill(child_pid, SIGTERM);
592
593 if (signr == -1)
594 return;
595
596 signal(signr, SIG_DFL);
597 kill(getpid(), signr);
598 }
599
600 static const char * const stat_usage[] = {
601 "perf stat [<options>] [<command>]",
602 NULL
603 };
604
605 static int stat__set_big_num(const struct option *opt __used,
606 const char *s __used, int unset)
607 {
608 big_num_opt = unset ? 0 : 1;
609 return 0;
610 }
611
612 static const struct option options[] = {
613 OPT_CALLBACK('e', "event", NULL, "event",
614 "event selector. use 'perf list' to list available events",
615 parse_events),
616 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
617 "child tasks do not inherit counters"),
618 OPT_INTEGER('p', "pid", &target_pid,
619 "stat events on existing process id"),
620 OPT_INTEGER('t', "tid", &target_tid,
621 "stat events on existing thread id"),
622 OPT_BOOLEAN('a', "all-cpus", &system_wide,
623 "system-wide collection from all CPUs"),
624 OPT_BOOLEAN('c', "scale", &scale,
625 "scale/normalize counters"),
626 OPT_INCR('v', "verbose", &verbose,
627 "be more verbose (show counter open errors, etc)"),
628 OPT_INTEGER('r', "repeat", &run_count,
629 "repeat command and print average + stddev (max: 100)"),
630 OPT_BOOLEAN('n', "null", &null_run,
631 "null run - dont start any counters"),
632 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
633 "print large numbers with thousands\' separators",
634 stat__set_big_num),
635 OPT_STRING('C', "cpu", &cpu_list, "cpu",
636 "list of cpus to monitor in system-wide"),
637 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
638 "disable CPU count aggregation"),
639 OPT_STRING('x', "field-separator", &csv_sep, "separator",
640 "print counts with custom separator"),
641 OPT_END()
642 };
643
644 int cmd_stat(int argc, const char **argv, const char *prefix __used)
645 {
646 struct perf_evsel *pos;
647 int status = -ENOMEM;
648
649 setlocale(LC_ALL, "");
650
651 argc = parse_options(argc, argv, options, stat_usage,
652 PARSE_OPT_STOP_AT_NON_OPTION);
653
654 if (csv_sep)
655 csv_output = true;
656 else
657 csv_sep = DEFAULT_SEPARATOR;
658
659 /*
660 * let the spreadsheet do the pretty-printing
661 */
662 if (csv_output) {
663 /* User explicitely passed -B? */
664 if (big_num_opt == 1) {
665 fprintf(stderr, "-B option not supported with -x\n");
666 usage_with_options(stat_usage, options);
667 } else /* Nope, so disable big number formatting */
668 big_num = false;
669 } else if (big_num_opt == 0) /* User passed --no-big-num */
670 big_num = false;
671
672 if (!argc && target_pid == -1 && target_tid == -1)
673 usage_with_options(stat_usage, options);
674 if (run_count <= 0)
675 usage_with_options(stat_usage, options);
676
677 /* no_aggr is for system-wide only */
678 if (no_aggr && !system_wide)
679 usage_with_options(stat_usage, options);
680
681 /* Set attrs and nr_counters if no event is selected and !null_run */
682 if (!null_run && !nr_counters) {
683 size_t c;
684
685 nr_counters = ARRAY_SIZE(default_attrs);
686
687 for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) {
688 pos = perf_evsel__new(&default_attrs[c],
689 nr_counters);
690 if (pos == NULL)
691 goto out;
692 list_add(&pos->node, &evsel_list);
693 }
694 }
695
696 if (target_pid != -1)
697 target_tid = target_pid;
698
699 threads = thread_map__new(target_pid, target_tid);
700 if (threads == NULL) {
701 pr_err("Problems finding threads of monitor\n");
702 usage_with_options(stat_usage, options);
703 }
704
705 if (system_wide)
706 cpus = cpu_map__new(cpu_list);
707 else
708 cpus = cpu_map__dummy_new();
709
710 if (cpus == NULL) {
711 perror("failed to parse CPUs map");
712 usage_with_options(stat_usage, options);
713 return -1;
714 }
715
716 list_for_each_entry(pos, &evsel_list, node) {
717 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
718 perf_evsel__alloc_counts(pos, cpus->nr) < 0 ||
719 perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
720 goto out_free_fd;
721 }
722
723 /*
724 * We dont want to block the signals - that would cause
725 * child tasks to inherit that and Ctrl-C would not work.
726 * What we want is for Ctrl-C to work in the exec()-ed
727 * task, but being ignored by perf stat itself:
728 */
729 atexit(sig_atexit);
730 signal(SIGINT, skip_signal);
731 signal(SIGALRM, skip_signal);
732 signal(SIGABRT, skip_signal);
733
734 status = 0;
735 for (run_idx = 0; run_idx < run_count; run_idx++) {
736 if (run_count != 1 && verbose)
737 fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1);
738 status = run_perf_stat(argc, argv);
739 }
740
741 if (status != -1)
742 print_stat(argc, argv);
743 out_free_fd:
744 list_for_each_entry(pos, &evsel_list, node)
745 perf_evsel__free_stat_priv(pos);
746 perf_evsel_list__delete();
747 out:
748 thread_map__delete(threads);
749 threads = NULL;
750 return status;
751 }
CJK support for tty framebuffer vt