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Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-artful-kernel.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
11 Time: 0.118
12
13 Performance counter stats for './hackbench 10':
14
15 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
26
27 0.154822978 seconds time elapsed
28
29 *
30 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
31 *
32 * Improvements and fixes by:
33 *
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
39 * Jaswinder Singh Rajput <jaswinder@kernel.org>
40 *
41 * Released under the GPL v2. (and only v2, not any later version)
42 */
43
44 #include "perf.h"
45 #include "builtin.h"
46 #include "util/cgroup.h"
47 #include "util/util.h"
48 #include <subcmd/parse-options.h>
49 #include "util/parse-events.h"
50 #include "util/pmu.h"
51 #include "util/event.h"
52 #include "util/evlist.h"
53 #include "util/evsel.h"
54 #include "util/debug.h"
55 #include "util/color.h"
56 #include "util/stat.h"
57 #include "util/header.h"
58 #include "util/cpumap.h"
59 #include "util/thread.h"
60 #include "util/thread_map.h"
61 #include "util/counts.h"
62 #include "util/session.h"
63 #include "util/tool.h"
64 #include "asm/bug.h"
65
66 #include <stdlib.h>
67 #include <sys/prctl.h>
68 #include <locale.h>
69
70 #define DEFAULT_SEPARATOR " "
71 #define CNTR_NOT_SUPPORTED "<not supported>"
72 #define CNTR_NOT_COUNTED "<not counted>"
73
74 static void print_counters(struct timespec *ts, int argc, const char **argv);
75
76 /* Default events used for perf stat -T */
77 static const char *transaction_attrs = {
78 "task-clock,"
79 "{"
80 "instructions,"
81 "cycles,"
82 "cpu/cycles-t/,"
83 "cpu/tx-start/,"
84 "cpu/el-start/,"
85 "cpu/cycles-ct/"
86 "}"
87 };
88
89 /* More limited version when the CPU does not have all events. */
90 static const char * transaction_limited_attrs = {
91 "task-clock,"
92 "{"
93 "instructions,"
94 "cycles,"
95 "cpu/cycles-t/,"
96 "cpu/tx-start/"
97 "}"
98 };
99
100 static struct perf_evlist *evsel_list;
101
102 static struct target target = {
103 .uid = UINT_MAX,
104 };
105
106 typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
107
108 static int run_count = 1;
109 static bool no_inherit = false;
110 static volatile pid_t child_pid = -1;
111 static bool null_run = false;
112 static int detailed_run = 0;
113 static bool transaction_run;
114 static bool big_num = true;
115 static int big_num_opt = -1;
116 static const char *csv_sep = NULL;
117 static bool csv_output = false;
118 static bool group = false;
119 static const char *pre_cmd = NULL;
120 static const char *post_cmd = NULL;
121 static bool sync_run = false;
122 static unsigned int initial_delay = 0;
123 static unsigned int unit_width = 4; /* strlen("unit") */
124 static bool forever = false;
125 static bool metric_only = false;
126 static struct timespec ref_time;
127 static struct cpu_map *aggr_map;
128 static aggr_get_id_t aggr_get_id;
129 static bool append_file;
130 static const char *output_name;
131 static int output_fd;
132
133 struct perf_stat {
134 bool record;
135 struct perf_data_file file;
136 struct perf_session *session;
137 u64 bytes_written;
138 struct perf_tool tool;
139 bool maps_allocated;
140 struct cpu_map *cpus;
141 struct thread_map *threads;
142 enum aggr_mode aggr_mode;
143 };
144
145 static struct perf_stat perf_stat;
146 #define STAT_RECORD perf_stat.record
147
148 static volatile int done = 0;
149
150 static struct perf_stat_config stat_config = {
151 .aggr_mode = AGGR_GLOBAL,
152 .scale = true,
153 };
154
155 static inline void diff_timespec(struct timespec *r, struct timespec *a,
156 struct timespec *b)
157 {
158 r->tv_sec = a->tv_sec - b->tv_sec;
159 if (a->tv_nsec < b->tv_nsec) {
160 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
161 r->tv_sec--;
162 } else {
163 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
164 }
165 }
166
167 static void perf_stat__reset_stats(void)
168 {
169 perf_evlist__reset_stats(evsel_list);
170 perf_stat__reset_shadow_stats();
171 }
172
173 static int create_perf_stat_counter(struct perf_evsel *evsel)
174 {
175 struct perf_event_attr *attr = &evsel->attr;
176
177 if (stat_config.scale)
178 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
179 PERF_FORMAT_TOTAL_TIME_RUNNING;
180
181 attr->inherit = !no_inherit;
182
183 /*
184 * Some events get initialized with sample_(period/type) set,
185 * like tracepoints. Clear it up for counting.
186 */
187 attr->sample_period = 0;
188
189 /*
190 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
191 * while avoiding that older tools show confusing messages.
192 *
193 * However for pipe sessions we need to keep it zero,
194 * because script's perf_evsel__check_attr is triggered
195 * by attr->sample_type != 0, and we can't run it on
196 * stat sessions.
197 */
198 if (!(STAT_RECORD && perf_stat.file.is_pipe))
199 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
200
201 /*
202 * Disabling all counters initially, they will be enabled
203 * either manually by us or by kernel via enable_on_exec
204 * set later.
205 */
206 if (perf_evsel__is_group_leader(evsel)) {
207 attr->disabled = 1;
208
209 /*
210 * In case of initial_delay we enable tracee
211 * events manually.
212 */
213 if (target__none(&target) && !initial_delay)
214 attr->enable_on_exec = 1;
215 }
216
217 if (target__has_cpu(&target))
218 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
219
220 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
221 }
222
223 /*
224 * Does the counter have nsecs as a unit?
225 */
226 static inline int nsec_counter(struct perf_evsel *evsel)
227 {
228 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
229 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
230 return 1;
231
232 return 0;
233 }
234
235 static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
236 union perf_event *event,
237 struct perf_sample *sample __maybe_unused,
238 struct machine *machine __maybe_unused)
239 {
240 if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
241 pr_err("failed to write perf data, error: %m\n");
242 return -1;
243 }
244
245 perf_stat.bytes_written += event->header.size;
246 return 0;
247 }
248
249 static int write_stat_round_event(u64 tm, u64 type)
250 {
251 return perf_event__synthesize_stat_round(NULL, tm, type,
252 process_synthesized_event,
253 NULL);
254 }
255
256 #define WRITE_STAT_ROUND_EVENT(time, interval) \
257 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
258
259 #define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
260
261 static int
262 perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
263 struct perf_counts_values *count)
264 {
265 struct perf_sample_id *sid = SID(counter, cpu, thread);
266
267 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
268 process_synthesized_event, NULL);
269 }
270
271 /*
272 * Read out the results of a single counter:
273 * do not aggregate counts across CPUs in system-wide mode
274 */
275 static int read_counter(struct perf_evsel *counter)
276 {
277 int nthreads = thread_map__nr(evsel_list->threads);
278 int ncpus = perf_evsel__nr_cpus(counter);
279 int cpu, thread;
280
281 if (!counter->supported)
282 return -ENOENT;
283
284 if (counter->system_wide)
285 nthreads = 1;
286
287 for (thread = 0; thread < nthreads; thread++) {
288 for (cpu = 0; cpu < ncpus; cpu++) {
289 struct perf_counts_values *count;
290
291 count = perf_counts(counter->counts, cpu, thread);
292 if (perf_evsel__read(counter, cpu, thread, count))
293 return -1;
294
295 if (STAT_RECORD) {
296 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
297 pr_err("failed to write stat event\n");
298 return -1;
299 }
300 }
301
302 if (verbose > 1) {
303 fprintf(stat_config.output,
304 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
305 perf_evsel__name(counter),
306 cpu,
307 count->val, count->ena, count->run);
308 }
309 }
310 }
311
312 return 0;
313 }
314
315 static void read_counters(bool close_counters)
316 {
317 struct perf_evsel *counter;
318
319 evlist__for_each(evsel_list, counter) {
320 if (read_counter(counter))
321 pr_debug("failed to read counter %s\n", counter->name);
322
323 if (perf_stat_process_counter(&stat_config, counter))
324 pr_warning("failed to process counter %s\n", counter->name);
325
326 if (close_counters) {
327 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
328 thread_map__nr(evsel_list->threads));
329 }
330 }
331 }
332
333 static void process_interval(void)
334 {
335 struct timespec ts, rs;
336
337 read_counters(false);
338
339 clock_gettime(CLOCK_MONOTONIC, &ts);
340 diff_timespec(&rs, &ts, &ref_time);
341
342 if (STAT_RECORD) {
343 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL))
344 pr_err("failed to write stat round event\n");
345 }
346
347 print_counters(&rs, 0, NULL);
348 }
349
350 static void enable_counters(void)
351 {
352 if (initial_delay)
353 usleep(initial_delay * 1000);
354
355 /*
356 * We need to enable counters only if:
357 * - we don't have tracee (attaching to task or cpu)
358 * - we have initial delay configured
359 */
360 if (!target__none(&target) || initial_delay)
361 perf_evlist__enable(evsel_list);
362 }
363
364 static volatile int workload_exec_errno;
365
366 /*
367 * perf_evlist__prepare_workload will send a SIGUSR1
368 * if the fork fails, since we asked by setting its
369 * want_signal to true.
370 */
371 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
372 void *ucontext __maybe_unused)
373 {
374 workload_exec_errno = info->si_value.sival_int;
375 }
376
377 static bool has_unit(struct perf_evsel *counter)
378 {
379 return counter->unit && *counter->unit;
380 }
381
382 static bool has_scale(struct perf_evsel *counter)
383 {
384 return counter->scale != 1;
385 }
386
387 static int perf_stat_synthesize_config(bool is_pipe)
388 {
389 struct perf_evsel *counter;
390 int err;
391
392 if (is_pipe) {
393 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
394 process_synthesized_event);
395 if (err < 0) {
396 pr_err("Couldn't synthesize attrs.\n");
397 return err;
398 }
399 }
400
401 /*
402 * Synthesize other events stuff not carried within
403 * attr event - unit, scale, name
404 */
405 evlist__for_each(evsel_list, counter) {
406 if (!counter->supported)
407 continue;
408
409 /*
410 * Synthesize unit and scale only if it's defined.
411 */
412 if (has_unit(counter)) {
413 err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
414 if (err < 0) {
415 pr_err("Couldn't synthesize evsel unit.\n");
416 return err;
417 }
418 }
419
420 if (has_scale(counter)) {
421 err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
422 if (err < 0) {
423 pr_err("Couldn't synthesize evsel scale.\n");
424 return err;
425 }
426 }
427
428 if (counter->own_cpus) {
429 err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
430 if (err < 0) {
431 pr_err("Couldn't synthesize evsel scale.\n");
432 return err;
433 }
434 }
435
436 /*
437 * Name is needed only for pipe output,
438 * perf.data carries event names.
439 */
440 if (is_pipe) {
441 err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
442 if (err < 0) {
443 pr_err("Couldn't synthesize evsel name.\n");
444 return err;
445 }
446 }
447 }
448
449 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
450 process_synthesized_event,
451 NULL);
452 if (err < 0) {
453 pr_err("Couldn't synthesize thread map.\n");
454 return err;
455 }
456
457 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
458 process_synthesized_event, NULL);
459 if (err < 0) {
460 pr_err("Couldn't synthesize thread map.\n");
461 return err;
462 }
463
464 err = perf_event__synthesize_stat_config(NULL, &stat_config,
465 process_synthesized_event, NULL);
466 if (err < 0) {
467 pr_err("Couldn't synthesize config.\n");
468 return err;
469 }
470
471 return 0;
472 }
473
474 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
475
476 static int __store_counter_ids(struct perf_evsel *counter,
477 struct cpu_map *cpus,
478 struct thread_map *threads)
479 {
480 int cpu, thread;
481
482 for (cpu = 0; cpu < cpus->nr; cpu++) {
483 for (thread = 0; thread < threads->nr; thread++) {
484 int fd = FD(counter, cpu, thread);
485
486 if (perf_evlist__id_add_fd(evsel_list, counter,
487 cpu, thread, fd) < 0)
488 return -1;
489 }
490 }
491
492 return 0;
493 }
494
495 static int store_counter_ids(struct perf_evsel *counter)
496 {
497 struct cpu_map *cpus = counter->cpus;
498 struct thread_map *threads = counter->threads;
499
500 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
501 return -ENOMEM;
502
503 return __store_counter_ids(counter, cpus, threads);
504 }
505
506 static int __run_perf_stat(int argc, const char **argv)
507 {
508 int interval = stat_config.interval;
509 char msg[512];
510 unsigned long long t0, t1;
511 struct perf_evsel *counter;
512 struct timespec ts;
513 size_t l;
514 int status = 0;
515 const bool forks = (argc > 0);
516 bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
517
518 if (interval) {
519 ts.tv_sec = interval / 1000;
520 ts.tv_nsec = (interval % 1000) * 1000000;
521 } else {
522 ts.tv_sec = 1;
523 ts.tv_nsec = 0;
524 }
525
526 if (forks) {
527 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
528 workload_exec_failed_signal) < 0) {
529 perror("failed to prepare workload");
530 return -1;
531 }
532 child_pid = evsel_list->workload.pid;
533 }
534
535 if (group)
536 perf_evlist__set_leader(evsel_list);
537
538 evlist__for_each(evsel_list, counter) {
539 try_again:
540 if (create_perf_stat_counter(counter) < 0) {
541 /*
542 * PPC returns ENXIO for HW counters until 2.6.37
543 * (behavior changed with commit b0a873e).
544 */
545 if (errno == EINVAL || errno == ENOSYS ||
546 errno == ENOENT || errno == EOPNOTSUPP ||
547 errno == ENXIO) {
548 if (verbose)
549 ui__warning("%s event is not supported by the kernel.\n",
550 perf_evsel__name(counter));
551 counter->supported = false;
552
553 if ((counter->leader != counter) ||
554 !(counter->leader->nr_members > 1))
555 continue;
556 } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
557 if (verbose)
558 ui__warning("%s\n", msg);
559 goto try_again;
560 }
561
562 perf_evsel__open_strerror(counter, &target,
563 errno, msg, sizeof(msg));
564 ui__error("%s\n", msg);
565
566 if (child_pid != -1)
567 kill(child_pid, SIGTERM);
568
569 return -1;
570 }
571 counter->supported = true;
572
573 l = strlen(counter->unit);
574 if (l > unit_width)
575 unit_width = l;
576
577 if (STAT_RECORD && store_counter_ids(counter))
578 return -1;
579 }
580
581 if (perf_evlist__apply_filters(evsel_list, &counter)) {
582 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
583 counter->filter, perf_evsel__name(counter), errno,
584 strerror_r(errno, msg, sizeof(msg)));
585 return -1;
586 }
587
588 if (STAT_RECORD) {
589 int err, fd = perf_data_file__fd(&perf_stat.file);
590
591 if (is_pipe) {
592 err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
593 } else {
594 err = perf_session__write_header(perf_stat.session, evsel_list,
595 fd, false);
596 }
597
598 if (err < 0)
599 return err;
600
601 err = perf_stat_synthesize_config(is_pipe);
602 if (err < 0)
603 return err;
604 }
605
606 /*
607 * Enable counters and exec the command:
608 */
609 t0 = rdclock();
610 clock_gettime(CLOCK_MONOTONIC, &ref_time);
611
612 if (forks) {
613 perf_evlist__start_workload(evsel_list);
614 enable_counters();
615
616 if (interval) {
617 while (!waitpid(child_pid, &status, WNOHANG)) {
618 nanosleep(&ts, NULL);
619 process_interval();
620 }
621 }
622 wait(&status);
623
624 if (workload_exec_errno) {
625 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
626 pr_err("Workload failed: %s\n", emsg);
627 return -1;
628 }
629
630 if (WIFSIGNALED(status))
631 psignal(WTERMSIG(status), argv[0]);
632 } else {
633 enable_counters();
634 while (!done) {
635 nanosleep(&ts, NULL);
636 if (interval)
637 process_interval();
638 }
639 }
640
641 t1 = rdclock();
642
643 update_stats(&walltime_nsecs_stats, t1 - t0);
644
645 read_counters(true);
646
647 return WEXITSTATUS(status);
648 }
649
650 static int run_perf_stat(int argc, const char **argv)
651 {
652 int ret;
653
654 if (pre_cmd) {
655 ret = system(pre_cmd);
656 if (ret)
657 return ret;
658 }
659
660 if (sync_run)
661 sync();
662
663 ret = __run_perf_stat(argc, argv);
664 if (ret)
665 return ret;
666
667 if (post_cmd) {
668 ret = system(post_cmd);
669 if (ret)
670 return ret;
671 }
672
673 return ret;
674 }
675
676 static void print_running(u64 run, u64 ena)
677 {
678 if (csv_output) {
679 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
680 csv_sep,
681 run,
682 csv_sep,
683 ena ? 100.0 * run / ena : 100.0);
684 } else if (run != ena) {
685 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
686 }
687 }
688
689 static void print_noise_pct(double total, double avg)
690 {
691 double pct = rel_stddev_stats(total, avg);
692
693 if (csv_output)
694 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
695 else if (pct)
696 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
697 }
698
699 static void print_noise(struct perf_evsel *evsel, double avg)
700 {
701 struct perf_stat_evsel *ps;
702
703 if (run_count == 1)
704 return;
705
706 ps = evsel->priv;
707 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
708 }
709
710 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
711 {
712 switch (stat_config.aggr_mode) {
713 case AGGR_CORE:
714 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
715 cpu_map__id_to_socket(id),
716 csv_output ? 0 : -8,
717 cpu_map__id_to_cpu(id),
718 csv_sep,
719 csv_output ? 0 : 4,
720 nr,
721 csv_sep);
722 break;
723 case AGGR_SOCKET:
724 fprintf(stat_config.output, "S%*d%s%*d%s",
725 csv_output ? 0 : -5,
726 id,
727 csv_sep,
728 csv_output ? 0 : 4,
729 nr,
730 csv_sep);
731 break;
732 case AGGR_NONE:
733 fprintf(stat_config.output, "CPU%*d%s",
734 csv_output ? 0 : -4,
735 perf_evsel__cpus(evsel)->map[id], csv_sep);
736 break;
737 case AGGR_THREAD:
738 fprintf(stat_config.output, "%*s-%*d%s",
739 csv_output ? 0 : 16,
740 thread_map__comm(evsel->threads, id),
741 csv_output ? 0 : -8,
742 thread_map__pid(evsel->threads, id),
743 csv_sep);
744 break;
745 case AGGR_GLOBAL:
746 case AGGR_UNSET:
747 default:
748 break;
749 }
750 }
751
752 struct outstate {
753 FILE *fh;
754 bool newline;
755 const char *prefix;
756 int nfields;
757 int id, nr;
758 struct perf_evsel *evsel;
759 };
760
761 #define METRIC_LEN 35
762
763 static void new_line_std(void *ctx)
764 {
765 struct outstate *os = ctx;
766
767 os->newline = true;
768 }
769
770 static void do_new_line_std(struct outstate *os)
771 {
772 fputc('\n', os->fh);
773 fputs(os->prefix, os->fh);
774 aggr_printout(os->evsel, os->id, os->nr);
775 if (stat_config.aggr_mode == AGGR_NONE)
776 fprintf(os->fh, " ");
777 fprintf(os->fh, " ");
778 }
779
780 static void print_metric_std(void *ctx, const char *color, const char *fmt,
781 const char *unit, double val)
782 {
783 struct outstate *os = ctx;
784 FILE *out = os->fh;
785 int n;
786 bool newline = os->newline;
787
788 os->newline = false;
789
790 if (unit == NULL || fmt == NULL) {
791 fprintf(out, "%-*s", METRIC_LEN, "");
792 return;
793 }
794
795 if (newline)
796 do_new_line_std(os);
797
798 n = fprintf(out, " # ");
799 if (color)
800 n += color_fprintf(out, color, fmt, val);
801 else
802 n += fprintf(out, fmt, val);
803 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
804 }
805
806 static void new_line_csv(void *ctx)
807 {
808 struct outstate *os = ctx;
809 int i;
810
811 fputc('\n', os->fh);
812 if (os->prefix)
813 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
814 aggr_printout(os->evsel, os->id, os->nr);
815 for (i = 0; i < os->nfields; i++)
816 fputs(csv_sep, os->fh);
817 }
818
819 static void print_metric_csv(void *ctx,
820 const char *color __maybe_unused,
821 const char *fmt, const char *unit, double val)
822 {
823 struct outstate *os = ctx;
824 FILE *out = os->fh;
825 char buf[64], *vals, *ends;
826
827 if (unit == NULL || fmt == NULL) {
828 fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
829 return;
830 }
831 snprintf(buf, sizeof(buf), fmt, val);
832 vals = buf;
833 while (isspace(*vals))
834 vals++;
835 ends = vals;
836 while (isdigit(*ends) || *ends == '.')
837 ends++;
838 *ends = 0;
839 while (isspace(*unit))
840 unit++;
841 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
842 }
843
844 #define METRIC_ONLY_LEN 20
845
846 /* Filter out some columns that don't work well in metrics only mode */
847
848 static bool valid_only_metric(const char *unit)
849 {
850 if (!unit)
851 return false;
852 if (strstr(unit, "/sec") ||
853 strstr(unit, "hz") ||
854 strstr(unit, "Hz") ||
855 strstr(unit, "CPUs utilized"))
856 return false;
857 return true;
858 }
859
860 static const char *fixunit(char *buf, struct perf_evsel *evsel,
861 const char *unit)
862 {
863 if (!strncmp(unit, "of all", 6)) {
864 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
865 unit);
866 return buf;
867 }
868 return unit;
869 }
870
871 static void print_metric_only(void *ctx, const char *color, const char *fmt,
872 const char *unit, double val)
873 {
874 struct outstate *os = ctx;
875 FILE *out = os->fh;
876 int n;
877 char buf[1024];
878 unsigned mlen = METRIC_ONLY_LEN;
879
880 if (!valid_only_metric(unit))
881 return;
882 unit = fixunit(buf, os->evsel, unit);
883 if (color)
884 n = color_fprintf(out, color, fmt, val);
885 else
886 n = fprintf(out, fmt, val);
887 if (n > METRIC_ONLY_LEN)
888 n = METRIC_ONLY_LEN;
889 if (mlen < strlen(unit))
890 mlen = strlen(unit) + 1;
891 fprintf(out, "%*s", mlen - n, "");
892 }
893
894 static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
895 const char *fmt,
896 const char *unit, double val)
897 {
898 struct outstate *os = ctx;
899 FILE *out = os->fh;
900 char buf[64], *vals, *ends;
901 char tbuf[1024];
902
903 if (!valid_only_metric(unit))
904 return;
905 unit = fixunit(tbuf, os->evsel, unit);
906 snprintf(buf, sizeof buf, fmt, val);
907 vals = buf;
908 while (isspace(*vals))
909 vals++;
910 ends = vals;
911 while (isdigit(*ends) || *ends == '.')
912 ends++;
913 *ends = 0;
914 fprintf(out, "%s%s", vals, csv_sep);
915 }
916
917 static void new_line_metric(void *ctx __maybe_unused)
918 {
919 }
920
921 static void print_metric_header(void *ctx, const char *color __maybe_unused,
922 const char *fmt __maybe_unused,
923 const char *unit, double val __maybe_unused)
924 {
925 struct outstate *os = ctx;
926 char tbuf[1024];
927
928 if (!valid_only_metric(unit))
929 return;
930 unit = fixunit(tbuf, os->evsel, unit);
931 if (csv_output)
932 fprintf(os->fh, "%s%s", unit, csv_sep);
933 else
934 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
935 }
936
937 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
938 {
939 FILE *output = stat_config.output;
940 double msecs = avg / 1e6;
941 const char *fmt_v, *fmt_n;
942 char name[25];
943
944 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
945 fmt_n = csv_output ? "%s" : "%-25s";
946
947 aggr_printout(evsel, id, nr);
948
949 scnprintf(name, sizeof(name), "%s%s",
950 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
951
952 fprintf(output, fmt_v, msecs, csv_sep);
953
954 if (csv_output)
955 fprintf(output, "%s%s", evsel->unit, csv_sep);
956 else
957 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
958
959 fprintf(output, fmt_n, name);
960
961 if (evsel->cgrp)
962 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
963 }
964
965 static int first_shadow_cpu(struct perf_evsel *evsel, int id)
966 {
967 int i;
968
969 if (!aggr_get_id)
970 return 0;
971
972 if (stat_config.aggr_mode == AGGR_NONE)
973 return id;
974
975 if (stat_config.aggr_mode == AGGR_GLOBAL)
976 return 0;
977
978 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
979 int cpu2 = perf_evsel__cpus(evsel)->map[i];
980
981 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
982 return cpu2;
983 }
984 return 0;
985 }
986
987 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
988 {
989 FILE *output = stat_config.output;
990 double sc = evsel->scale;
991 const char *fmt;
992
993 if (csv_output) {
994 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
995 } else {
996 if (big_num)
997 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
998 else
999 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
1000 }
1001
1002 aggr_printout(evsel, id, nr);
1003
1004 fprintf(output, fmt, avg, csv_sep);
1005
1006 if (evsel->unit)
1007 fprintf(output, "%-*s%s",
1008 csv_output ? 0 : unit_width,
1009 evsel->unit, csv_sep);
1010
1011 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1012
1013 if (evsel->cgrp)
1014 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1015 }
1016
1017 static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1018 char *prefix, u64 run, u64 ena, double noise)
1019 {
1020 struct perf_stat_output_ctx out;
1021 struct outstate os = {
1022 .fh = stat_config.output,
1023 .prefix = prefix ? prefix : "",
1024 .id = id,
1025 .nr = nr,
1026 .evsel = counter,
1027 };
1028 print_metric_t pm = print_metric_std;
1029 void (*nl)(void *);
1030
1031 if (metric_only) {
1032 nl = new_line_metric;
1033 if (csv_output)
1034 pm = print_metric_only_csv;
1035 else
1036 pm = print_metric_only;
1037 } else
1038 nl = new_line_std;
1039
1040 if (csv_output && !metric_only) {
1041 static int aggr_fields[] = {
1042 [AGGR_GLOBAL] = 0,
1043 [AGGR_THREAD] = 1,
1044 [AGGR_NONE] = 1,
1045 [AGGR_SOCKET] = 2,
1046 [AGGR_CORE] = 2,
1047 };
1048
1049 pm = print_metric_csv;
1050 nl = new_line_csv;
1051 os.nfields = 3;
1052 os.nfields += aggr_fields[stat_config.aggr_mode];
1053 if (counter->cgrp)
1054 os.nfields++;
1055 }
1056 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1057 if (metric_only) {
1058 pm(&os, NULL, "", "", 0);
1059 return;
1060 }
1061 aggr_printout(counter, id, nr);
1062
1063 fprintf(stat_config.output, "%*s%s",
1064 csv_output ? 0 : 18,
1065 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1066 csv_sep);
1067
1068 fprintf(stat_config.output, "%-*s%s",
1069 csv_output ? 0 : unit_width,
1070 counter->unit, csv_sep);
1071
1072 fprintf(stat_config.output, "%*s",
1073 csv_output ? 0 : -25,
1074 perf_evsel__name(counter));
1075
1076 if (counter->cgrp)
1077 fprintf(stat_config.output, "%s%s",
1078 csv_sep, counter->cgrp->name);
1079
1080 if (!csv_output)
1081 pm(&os, NULL, NULL, "", 0);
1082 print_noise(counter, noise);
1083 print_running(run, ena);
1084 if (csv_output)
1085 pm(&os, NULL, NULL, "", 0);
1086 return;
1087 }
1088
1089 if (metric_only)
1090 /* nothing */;
1091 else if (nsec_counter(counter))
1092 nsec_printout(id, nr, counter, uval);
1093 else
1094 abs_printout(id, nr, counter, uval);
1095
1096 out.print_metric = pm;
1097 out.new_line = nl;
1098 out.ctx = &os;
1099
1100 if (csv_output && !metric_only) {
1101 print_noise(counter, noise);
1102 print_running(run, ena);
1103 }
1104
1105 perf_stat__print_shadow_stats(counter, uval,
1106 first_shadow_cpu(counter, id),
1107 &out);
1108 if (!csv_output && !metric_only) {
1109 print_noise(counter, noise);
1110 print_running(run, ena);
1111 }
1112 }
1113
1114 static void aggr_update_shadow(void)
1115 {
1116 int cpu, s2, id, s;
1117 u64 val;
1118 struct perf_evsel *counter;
1119
1120 for (s = 0; s < aggr_map->nr; s++) {
1121 id = aggr_map->map[s];
1122 evlist__for_each(evsel_list, counter) {
1123 val = 0;
1124 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1125 s2 = aggr_get_id(evsel_list->cpus, cpu);
1126 if (s2 != id)
1127 continue;
1128 val += perf_counts(counter->counts, cpu, 0)->val;
1129 }
1130 val = val * counter->scale;
1131 perf_stat__update_shadow_stats(counter, &val,
1132 first_shadow_cpu(counter, id));
1133 }
1134 }
1135 }
1136
1137 static void print_aggr(char *prefix)
1138 {
1139 FILE *output = stat_config.output;
1140 struct perf_evsel *counter;
1141 int cpu, s, s2, id, nr;
1142 double uval;
1143 u64 ena, run, val;
1144 bool first;
1145
1146 if (!(aggr_map || aggr_get_id))
1147 return;
1148
1149 aggr_update_shadow();
1150
1151 /*
1152 * With metric_only everything is on a single line.
1153 * Without each counter has its own line.
1154 */
1155 for (s = 0; s < aggr_map->nr; s++) {
1156 if (prefix && metric_only)
1157 fprintf(output, "%s", prefix);
1158
1159 id = aggr_map->map[s];
1160 first = true;
1161 evlist__for_each(evsel_list, counter) {
1162 val = ena = run = 0;
1163 nr = 0;
1164 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1165 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1166 if (s2 != id)
1167 continue;
1168 val += perf_counts(counter->counts, cpu, 0)->val;
1169 ena += perf_counts(counter->counts, cpu, 0)->ena;
1170 run += perf_counts(counter->counts, cpu, 0)->run;
1171 nr++;
1172 }
1173 if (first && metric_only) {
1174 first = false;
1175 aggr_printout(counter, id, nr);
1176 }
1177 if (prefix && !metric_only)
1178 fprintf(output, "%s", prefix);
1179
1180 uval = val * counter->scale;
1181 printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1182 if (!metric_only)
1183 fputc('\n', output);
1184 }
1185 if (metric_only)
1186 fputc('\n', output);
1187 }
1188 }
1189
1190 static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1191 {
1192 FILE *output = stat_config.output;
1193 int nthreads = thread_map__nr(counter->threads);
1194 int ncpus = cpu_map__nr(counter->cpus);
1195 int cpu, thread;
1196 double uval;
1197
1198 for (thread = 0; thread < nthreads; thread++) {
1199 u64 ena = 0, run = 0, val = 0;
1200
1201 for (cpu = 0; cpu < ncpus; cpu++) {
1202 val += perf_counts(counter->counts, cpu, thread)->val;
1203 ena += perf_counts(counter->counts, cpu, thread)->ena;
1204 run += perf_counts(counter->counts, cpu, thread)->run;
1205 }
1206
1207 if (prefix)
1208 fprintf(output, "%s", prefix);
1209
1210 uval = val * counter->scale;
1211 printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1212 fputc('\n', output);
1213 }
1214 }
1215
1216 /*
1217 * Print out the results of a single counter:
1218 * aggregated counts in system-wide mode
1219 */
1220 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1221 {
1222 FILE *output = stat_config.output;
1223 struct perf_stat_evsel *ps = counter->priv;
1224 double avg = avg_stats(&ps->res_stats[0]);
1225 double uval;
1226 double avg_enabled, avg_running;
1227
1228 avg_enabled = avg_stats(&ps->res_stats[1]);
1229 avg_running = avg_stats(&ps->res_stats[2]);
1230
1231 if (prefix && !metric_only)
1232 fprintf(output, "%s", prefix);
1233
1234 uval = avg * counter->scale;
1235 printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1236 if (!metric_only)
1237 fprintf(output, "\n");
1238 }
1239
1240 /*
1241 * Print out the results of a single counter:
1242 * does not use aggregated count in system-wide
1243 */
1244 static void print_counter(struct perf_evsel *counter, char *prefix)
1245 {
1246 FILE *output = stat_config.output;
1247 u64 ena, run, val;
1248 double uval;
1249 int cpu;
1250
1251 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1252 val = perf_counts(counter->counts, cpu, 0)->val;
1253 ena = perf_counts(counter->counts, cpu, 0)->ena;
1254 run = perf_counts(counter->counts, cpu, 0)->run;
1255
1256 if (prefix)
1257 fprintf(output, "%s", prefix);
1258
1259 uval = val * counter->scale;
1260 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1261
1262 fputc('\n', output);
1263 }
1264 }
1265
1266 static void print_no_aggr_metric(char *prefix)
1267 {
1268 int cpu;
1269 int nrcpus = 0;
1270 struct perf_evsel *counter;
1271 u64 ena, run, val;
1272 double uval;
1273
1274 nrcpus = evsel_list->cpus->nr;
1275 for (cpu = 0; cpu < nrcpus; cpu++) {
1276 bool first = true;
1277
1278 if (prefix)
1279 fputs(prefix, stat_config.output);
1280 evlist__for_each(evsel_list, counter) {
1281 if (first) {
1282 aggr_printout(counter, cpu, 0);
1283 first = false;
1284 }
1285 val = perf_counts(counter->counts, cpu, 0)->val;
1286 ena = perf_counts(counter->counts, cpu, 0)->ena;
1287 run = perf_counts(counter->counts, cpu, 0)->run;
1288
1289 uval = val * counter->scale;
1290 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1291 }
1292 fputc('\n', stat_config.output);
1293 }
1294 }
1295
1296 static int aggr_header_lens[] = {
1297 [AGGR_CORE] = 18,
1298 [AGGR_SOCKET] = 12,
1299 [AGGR_NONE] = 6,
1300 [AGGR_THREAD] = 24,
1301 [AGGR_GLOBAL] = 0,
1302 };
1303
1304 static void print_metric_headers(char *prefix)
1305 {
1306 struct perf_stat_output_ctx out;
1307 struct perf_evsel *counter;
1308 struct outstate os = {
1309 .fh = stat_config.output
1310 };
1311
1312 if (prefix)
1313 fprintf(stat_config.output, "%s", prefix);
1314
1315 if (!csv_output)
1316 fprintf(stat_config.output, "%*s",
1317 aggr_header_lens[stat_config.aggr_mode], "");
1318
1319 /* Print metrics headers only */
1320 evlist__for_each(evsel_list, counter) {
1321 os.evsel = counter;
1322 out.ctx = &os;
1323 out.print_metric = print_metric_header;
1324 out.new_line = new_line_metric;
1325 os.evsel = counter;
1326 perf_stat__print_shadow_stats(counter, 0,
1327 0,
1328 &out);
1329 }
1330 fputc('\n', stat_config.output);
1331 }
1332
1333 static void print_interval(char *prefix, struct timespec *ts)
1334 {
1335 FILE *output = stat_config.output;
1336 static int num_print_interval;
1337
1338 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1339
1340 if (num_print_interval == 0 && !csv_output && !metric_only) {
1341 switch (stat_config.aggr_mode) {
1342 case AGGR_SOCKET:
1343 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
1344 break;
1345 case AGGR_CORE:
1346 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
1347 break;
1348 case AGGR_NONE:
1349 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
1350 break;
1351 case AGGR_THREAD:
1352 fprintf(output, "# time comm-pid counts %*s events\n", unit_width, "unit");
1353 break;
1354 case AGGR_GLOBAL:
1355 default:
1356 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
1357 case AGGR_UNSET:
1358 break;
1359 }
1360 }
1361
1362 if (++num_print_interval == 25)
1363 num_print_interval = 0;
1364 }
1365
1366 static void print_header(int argc, const char **argv)
1367 {
1368 FILE *output = stat_config.output;
1369 int i;
1370
1371 fflush(stdout);
1372
1373 if (!csv_output) {
1374 fprintf(output, "\n");
1375 fprintf(output, " Performance counter stats for ");
1376 if (target.system_wide)
1377 fprintf(output, "\'system wide");
1378 else if (target.cpu_list)
1379 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1380 else if (!target__has_task(&target)) {
1381 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1382 for (i = 1; argv && (i < argc); i++)
1383 fprintf(output, " %s", argv[i]);
1384 } else if (target.pid)
1385 fprintf(output, "process id \'%s", target.pid);
1386 else
1387 fprintf(output, "thread id \'%s", target.tid);
1388
1389 fprintf(output, "\'");
1390 if (run_count > 1)
1391 fprintf(output, " (%d runs)", run_count);
1392 fprintf(output, ":\n\n");
1393 }
1394 }
1395
1396 static void print_footer(void)
1397 {
1398 FILE *output = stat_config.output;
1399
1400 if (!null_run)
1401 fprintf(output, "\n");
1402 fprintf(output, " %17.9f seconds time elapsed",
1403 avg_stats(&walltime_nsecs_stats)/1e9);
1404 if (run_count > 1) {
1405 fprintf(output, " ");
1406 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1407 avg_stats(&walltime_nsecs_stats));
1408 }
1409 fprintf(output, "\n\n");
1410 }
1411
1412 static void print_counters(struct timespec *ts, int argc, const char **argv)
1413 {
1414 int interval = stat_config.interval;
1415 struct perf_evsel *counter;
1416 char buf[64], *prefix = NULL;
1417
1418 /* Do not print anything if we record to the pipe. */
1419 if (STAT_RECORD && perf_stat.file.is_pipe)
1420 return;
1421
1422 if (interval)
1423 print_interval(prefix = buf, ts);
1424 else
1425 print_header(argc, argv);
1426
1427 if (metric_only) {
1428 static int num_print_iv;
1429
1430 if (num_print_iv == 0)
1431 print_metric_headers(prefix);
1432 if (num_print_iv++ == 25)
1433 num_print_iv = 0;
1434 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1435 fprintf(stat_config.output, "%s", prefix);
1436 }
1437
1438 switch (stat_config.aggr_mode) {
1439 case AGGR_CORE:
1440 case AGGR_SOCKET:
1441 print_aggr(prefix);
1442 break;
1443 case AGGR_THREAD:
1444 evlist__for_each(evsel_list, counter)
1445 print_aggr_thread(counter, prefix);
1446 break;
1447 case AGGR_GLOBAL:
1448 evlist__for_each(evsel_list, counter)
1449 print_counter_aggr(counter, prefix);
1450 if (metric_only)
1451 fputc('\n', stat_config.output);
1452 break;
1453 case AGGR_NONE:
1454 if (metric_only)
1455 print_no_aggr_metric(prefix);
1456 else {
1457 evlist__for_each(evsel_list, counter)
1458 print_counter(counter, prefix);
1459 }
1460 break;
1461 case AGGR_UNSET:
1462 default:
1463 break;
1464 }
1465
1466 if (!interval && !csv_output)
1467 print_footer();
1468
1469 fflush(stat_config.output);
1470 }
1471
1472 static volatile int signr = -1;
1473
1474 static void skip_signal(int signo)
1475 {
1476 if ((child_pid == -1) || stat_config.interval)
1477 done = 1;
1478
1479 signr = signo;
1480 /*
1481 * render child_pid harmless
1482 * won't send SIGTERM to a random
1483 * process in case of race condition
1484 * and fast PID recycling
1485 */
1486 child_pid = -1;
1487 }
1488
1489 static void sig_atexit(void)
1490 {
1491 sigset_t set, oset;
1492
1493 /*
1494 * avoid race condition with SIGCHLD handler
1495 * in skip_signal() which is modifying child_pid
1496 * goal is to avoid send SIGTERM to a random
1497 * process
1498 */
1499 sigemptyset(&set);
1500 sigaddset(&set, SIGCHLD);
1501 sigprocmask(SIG_BLOCK, &set, &oset);
1502
1503 if (child_pid != -1)
1504 kill(child_pid, SIGTERM);
1505
1506 sigprocmask(SIG_SETMASK, &oset, NULL);
1507
1508 if (signr == -1)
1509 return;
1510
1511 signal(signr, SIG_DFL);
1512 kill(getpid(), signr);
1513 }
1514
1515 static int stat__set_big_num(const struct option *opt __maybe_unused,
1516 const char *s __maybe_unused, int unset)
1517 {
1518 big_num_opt = unset ? 0 : 1;
1519 return 0;
1520 }
1521
1522 static const struct option stat_options[] = {
1523 OPT_BOOLEAN('T', "transaction", &transaction_run,
1524 "hardware transaction statistics"),
1525 OPT_CALLBACK('e', "event", &evsel_list, "event",
1526 "event selector. use 'perf list' to list available events",
1527 parse_events_option),
1528 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1529 "event filter", parse_filter),
1530 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1531 "child tasks do not inherit counters"),
1532 OPT_STRING('p', "pid", &target.pid, "pid",
1533 "stat events on existing process id"),
1534 OPT_STRING('t', "tid", &target.tid, "tid",
1535 "stat events on existing thread id"),
1536 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1537 "system-wide collection from all CPUs"),
1538 OPT_BOOLEAN('g', "group", &group,
1539 "put the counters into a counter group"),
1540 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1541 OPT_INCR('v', "verbose", &verbose,
1542 "be more verbose (show counter open errors, etc)"),
1543 OPT_INTEGER('r', "repeat", &run_count,
1544 "repeat command and print average + stddev (max: 100, forever: 0)"),
1545 OPT_BOOLEAN('n', "null", &null_run,
1546 "null run - dont start any counters"),
1547 OPT_INCR('d', "detailed", &detailed_run,
1548 "detailed run - start a lot of events"),
1549 OPT_BOOLEAN('S', "sync", &sync_run,
1550 "call sync() before starting a run"),
1551 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1552 "print large numbers with thousands\' separators",
1553 stat__set_big_num),
1554 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1555 "list of cpus to monitor in system-wide"),
1556 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1557 "disable CPU count aggregation", AGGR_NONE),
1558 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1559 "print counts with custom separator"),
1560 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1561 "monitor event in cgroup name only", parse_cgroups),
1562 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1563 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1564 OPT_INTEGER(0, "log-fd", &output_fd,
1565 "log output to fd, instead of stderr"),
1566 OPT_STRING(0, "pre", &pre_cmd, "command",
1567 "command to run prior to the measured command"),
1568 OPT_STRING(0, "post", &post_cmd, "command",
1569 "command to run after to the measured command"),
1570 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1571 "print counts at regular interval in ms (>= 10)"),
1572 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1573 "aggregate counts per processor socket", AGGR_SOCKET),
1574 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1575 "aggregate counts per physical processor core", AGGR_CORE),
1576 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1577 "aggregate counts per thread", AGGR_THREAD),
1578 OPT_UINTEGER('D', "delay", &initial_delay,
1579 "ms to wait before starting measurement after program start"),
1580 OPT_BOOLEAN(0, "metric-only", &metric_only,
1581 "Only print computed metrics. No raw values"),
1582 OPT_END()
1583 };
1584
1585 static int perf_stat__get_socket(struct cpu_map *map, int cpu)
1586 {
1587 return cpu_map__get_socket(map, cpu, NULL);
1588 }
1589
1590 static int perf_stat__get_core(struct cpu_map *map, int cpu)
1591 {
1592 return cpu_map__get_core(map, cpu, NULL);
1593 }
1594
1595 static int cpu_map__get_max(struct cpu_map *map)
1596 {
1597 int i, max = -1;
1598
1599 for (i = 0; i < map->nr; i++) {
1600 if (map->map[i] > max)
1601 max = map->map[i];
1602 }
1603
1604 return max;
1605 }
1606
1607 static struct cpu_map *cpus_aggr_map;
1608
1609 static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
1610 {
1611 int cpu;
1612
1613 if (idx >= map->nr)
1614 return -1;
1615
1616 cpu = map->map[idx];
1617
1618 if (cpus_aggr_map->map[cpu] == -1)
1619 cpus_aggr_map->map[cpu] = get_id(map, idx);
1620
1621 return cpus_aggr_map->map[cpu];
1622 }
1623
1624 static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
1625 {
1626 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1627 }
1628
1629 static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
1630 {
1631 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1632 }
1633
1634 static int perf_stat_init_aggr_mode(void)
1635 {
1636 int nr;
1637
1638 switch (stat_config.aggr_mode) {
1639 case AGGR_SOCKET:
1640 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1641 perror("cannot build socket map");
1642 return -1;
1643 }
1644 aggr_get_id = perf_stat__get_socket_cached;
1645 break;
1646 case AGGR_CORE:
1647 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1648 perror("cannot build core map");
1649 return -1;
1650 }
1651 aggr_get_id = perf_stat__get_core_cached;
1652 break;
1653 case AGGR_NONE:
1654 case AGGR_GLOBAL:
1655 case AGGR_THREAD:
1656 case AGGR_UNSET:
1657 default:
1658 break;
1659 }
1660
1661 /*
1662 * The evsel_list->cpus is the base we operate on,
1663 * taking the highest cpu number to be the size of
1664 * the aggregation translate cpumap.
1665 */
1666 nr = cpu_map__get_max(evsel_list->cpus);
1667 cpus_aggr_map = cpu_map__empty_new(nr + 1);
1668 return cpus_aggr_map ? 0 : -ENOMEM;
1669 }
1670
1671 static void perf_stat__exit_aggr_mode(void)
1672 {
1673 cpu_map__put(aggr_map);
1674 cpu_map__put(cpus_aggr_map);
1675 aggr_map = NULL;
1676 cpus_aggr_map = NULL;
1677 }
1678
1679 static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1680 {
1681 int cpu;
1682
1683 if (idx > map->nr)
1684 return -1;
1685
1686 cpu = map->map[idx];
1687
1688 if (cpu >= env->nr_cpus_online)
1689 return -1;
1690
1691 return cpu;
1692 }
1693
1694 static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1695 {
1696 struct perf_env *env = data;
1697 int cpu = perf_env__get_cpu(env, map, idx);
1698
1699 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
1700 }
1701
1702 static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1703 {
1704 struct perf_env *env = data;
1705 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1706
1707 if (cpu != -1) {
1708 int socket_id = env->cpu[cpu].socket_id;
1709
1710 /*
1711 * Encode socket in upper 16 bits
1712 * core_id is relative to socket, and
1713 * we need a global id. So we combine
1714 * socket + core id.
1715 */
1716 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
1717 }
1718
1719 return core;
1720 }
1721
1722 static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1723 struct cpu_map **sockp)
1724 {
1725 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1726 }
1727
1728 static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1729 struct cpu_map **corep)
1730 {
1731 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1732 }
1733
1734 static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
1735 {
1736 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1737 }
1738
1739 static int perf_stat__get_core_file(struct cpu_map *map, int idx)
1740 {
1741 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1742 }
1743
1744 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1745 {
1746 struct perf_env *env = &st->session->header.env;
1747
1748 switch (stat_config.aggr_mode) {
1749 case AGGR_SOCKET:
1750 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1751 perror("cannot build socket map");
1752 return -1;
1753 }
1754 aggr_get_id = perf_stat__get_socket_file;
1755 break;
1756 case AGGR_CORE:
1757 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1758 perror("cannot build core map");
1759 return -1;
1760 }
1761 aggr_get_id = perf_stat__get_core_file;
1762 break;
1763 case AGGR_NONE:
1764 case AGGR_GLOBAL:
1765 case AGGR_THREAD:
1766 case AGGR_UNSET:
1767 default:
1768 break;
1769 }
1770
1771 return 0;
1772 }
1773
1774 /*
1775 * Add default attributes, if there were no attributes specified or
1776 * if -d/--detailed, -d -d or -d -d -d is used:
1777 */
1778 static int add_default_attributes(void)
1779 {
1780 struct perf_event_attr default_attrs0[] = {
1781
1782 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1783 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1784 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1785 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1786
1787 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1788 };
1789 struct perf_event_attr frontend_attrs[] = {
1790 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1791 };
1792 struct perf_event_attr backend_attrs[] = {
1793 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1794 };
1795 struct perf_event_attr default_attrs1[] = {
1796 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1797 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1798 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1799
1800 };
1801
1802 /*
1803 * Detailed stats (-d), covering the L1 and last level data caches:
1804 */
1805 struct perf_event_attr detailed_attrs[] = {
1806
1807 { .type = PERF_TYPE_HW_CACHE,
1808 .config =
1809 PERF_COUNT_HW_CACHE_L1D << 0 |
1810 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1811 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1812
1813 { .type = PERF_TYPE_HW_CACHE,
1814 .config =
1815 PERF_COUNT_HW_CACHE_L1D << 0 |
1816 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1817 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1818
1819 { .type = PERF_TYPE_HW_CACHE,
1820 .config =
1821 PERF_COUNT_HW_CACHE_LL << 0 |
1822 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1823 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1824
1825 { .type = PERF_TYPE_HW_CACHE,
1826 .config =
1827 PERF_COUNT_HW_CACHE_LL << 0 |
1828 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1829 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1830 };
1831
1832 /*
1833 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1834 */
1835 struct perf_event_attr very_detailed_attrs[] = {
1836
1837 { .type = PERF_TYPE_HW_CACHE,
1838 .config =
1839 PERF_COUNT_HW_CACHE_L1I << 0 |
1840 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1841 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1842
1843 { .type = PERF_TYPE_HW_CACHE,
1844 .config =
1845 PERF_COUNT_HW_CACHE_L1I << 0 |
1846 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1847 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1848
1849 { .type = PERF_TYPE_HW_CACHE,
1850 .config =
1851 PERF_COUNT_HW_CACHE_DTLB << 0 |
1852 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1853 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1854
1855 { .type = PERF_TYPE_HW_CACHE,
1856 .config =
1857 PERF_COUNT_HW_CACHE_DTLB << 0 |
1858 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1859 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1860
1861 { .type = PERF_TYPE_HW_CACHE,
1862 .config =
1863 PERF_COUNT_HW_CACHE_ITLB << 0 |
1864 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1865 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1866
1867 { .type = PERF_TYPE_HW_CACHE,
1868 .config =
1869 PERF_COUNT_HW_CACHE_ITLB << 0 |
1870 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1871 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1872
1873 };
1874
1875 /*
1876 * Very, very detailed stats (-d -d -d), adding prefetch events:
1877 */
1878 struct perf_event_attr very_very_detailed_attrs[] = {
1879
1880 { .type = PERF_TYPE_HW_CACHE,
1881 .config =
1882 PERF_COUNT_HW_CACHE_L1D << 0 |
1883 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1884 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1885
1886 { .type = PERF_TYPE_HW_CACHE,
1887 .config =
1888 PERF_COUNT_HW_CACHE_L1D << 0 |
1889 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1890 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1891 };
1892
1893 /* Set attrs if no event is selected and !null_run: */
1894 if (null_run)
1895 return 0;
1896
1897 if (transaction_run) {
1898 int err;
1899 if (pmu_have_event("cpu", "cycles-ct") &&
1900 pmu_have_event("cpu", "el-start"))
1901 err = parse_events(evsel_list, transaction_attrs, NULL);
1902 else
1903 err = parse_events(evsel_list, transaction_limited_attrs, NULL);
1904 if (err) {
1905 fprintf(stderr, "Cannot set up transaction events\n");
1906 return -1;
1907 }
1908 return 0;
1909 }
1910
1911 if (!evsel_list->nr_entries) {
1912 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
1913 return -1;
1914 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
1915 if (perf_evlist__add_default_attrs(evsel_list,
1916 frontend_attrs) < 0)
1917 return -1;
1918 }
1919 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
1920 if (perf_evlist__add_default_attrs(evsel_list,
1921 backend_attrs) < 0)
1922 return -1;
1923 }
1924 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
1925 return -1;
1926 }
1927
1928 /* Detailed events get appended to the event list: */
1929
1930 if (detailed_run < 1)
1931 return 0;
1932
1933 /* Append detailed run extra attributes: */
1934 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1935 return -1;
1936
1937 if (detailed_run < 2)
1938 return 0;
1939
1940 /* Append very detailed run extra attributes: */
1941 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1942 return -1;
1943
1944 if (detailed_run < 3)
1945 return 0;
1946
1947 /* Append very, very detailed run extra attributes: */
1948 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1949 }
1950
1951 static const char * const stat_record_usage[] = {
1952 "perf stat record [<options>]",
1953 NULL,
1954 };
1955
1956 static void init_features(struct perf_session *session)
1957 {
1958 int feat;
1959
1960 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
1961 perf_header__set_feat(&session->header, feat);
1962
1963 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
1964 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
1965 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
1966 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
1967 }
1968
1969 static int __cmd_record(int argc, const char **argv)
1970 {
1971 struct perf_session *session;
1972 struct perf_data_file *file = &perf_stat.file;
1973
1974 argc = parse_options(argc, argv, stat_options, stat_record_usage,
1975 PARSE_OPT_STOP_AT_NON_OPTION);
1976
1977 if (output_name)
1978 file->path = output_name;
1979
1980 if (run_count != 1 || forever) {
1981 pr_err("Cannot use -r option with perf stat record.\n");
1982 return -1;
1983 }
1984
1985 session = perf_session__new(file, false, NULL);
1986 if (session == NULL) {
1987 pr_err("Perf session creation failed.\n");
1988 return -1;
1989 }
1990
1991 init_features(session);
1992
1993 session->evlist = evsel_list;
1994 perf_stat.session = session;
1995 perf_stat.record = true;
1996 return argc;
1997 }
1998
1999 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
2000 union perf_event *event,
2001 struct perf_session *session)
2002 {
2003 struct stat_round_event *round = &event->stat_round;
2004 struct perf_evsel *counter;
2005 struct timespec tsh, *ts = NULL;
2006 const char **argv = session->header.env.cmdline_argv;
2007 int argc = session->header.env.nr_cmdline;
2008
2009 evlist__for_each(evsel_list, counter)
2010 perf_stat_process_counter(&stat_config, counter);
2011
2012 if (round->type == PERF_STAT_ROUND_TYPE__FINAL)
2013 update_stats(&walltime_nsecs_stats, round->time);
2014
2015 if (stat_config.interval && round->time) {
2016 tsh.tv_sec = round->time / NSECS_PER_SEC;
2017 tsh.tv_nsec = round->time % NSECS_PER_SEC;
2018 ts = &tsh;
2019 }
2020
2021 print_counters(ts, argc, argv);
2022 return 0;
2023 }
2024
2025 static
2026 int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2027 union perf_event *event,
2028 struct perf_session *session __maybe_unused)
2029 {
2030 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2031
2032 perf_event__read_stat_config(&stat_config, &event->stat_config);
2033
2034 if (cpu_map__empty(st->cpus)) {
2035 if (st->aggr_mode != AGGR_UNSET)
2036 pr_warning("warning: processing task data, aggregation mode not set\n");
2037 return 0;
2038 }
2039
2040 if (st->aggr_mode != AGGR_UNSET)
2041 stat_config.aggr_mode = st->aggr_mode;
2042
2043 if (perf_stat.file.is_pipe)
2044 perf_stat_init_aggr_mode();
2045 else
2046 perf_stat_init_aggr_mode_file(st);
2047
2048 return 0;
2049 }
2050
2051 static int set_maps(struct perf_stat *st)
2052 {
2053 if (!st->cpus || !st->threads)
2054 return 0;
2055
2056 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2057 return -EINVAL;
2058
2059 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2060
2061 if (perf_evlist__alloc_stats(evsel_list, true))
2062 return -ENOMEM;
2063
2064 st->maps_allocated = true;
2065 return 0;
2066 }
2067
2068 static
2069 int process_thread_map_event(struct perf_tool *tool __maybe_unused,
2070 union perf_event *event,
2071 struct perf_session *session __maybe_unused)
2072 {
2073 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2074
2075 if (st->threads) {
2076 pr_warning("Extra thread map event, ignoring.\n");
2077 return 0;
2078 }
2079
2080 st->threads = thread_map__new_event(&event->thread_map);
2081 if (!st->threads)
2082 return -ENOMEM;
2083
2084 return set_maps(st);
2085 }
2086
2087 static
2088 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2089 union perf_event *event,
2090 struct perf_session *session __maybe_unused)
2091 {
2092 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2093 struct cpu_map *cpus;
2094
2095 if (st->cpus) {
2096 pr_warning("Extra cpu map event, ignoring.\n");
2097 return 0;
2098 }
2099
2100 cpus = cpu_map__new_data(&event->cpu_map.data);
2101 if (!cpus)
2102 return -ENOMEM;
2103
2104 st->cpus = cpus;
2105 return set_maps(st);
2106 }
2107
2108 static const char * const stat_report_usage[] = {
2109 "perf stat report [<options>]",
2110 NULL,
2111 };
2112
2113 static struct perf_stat perf_stat = {
2114 .tool = {
2115 .attr = perf_event__process_attr,
2116 .event_update = perf_event__process_event_update,
2117 .thread_map = process_thread_map_event,
2118 .cpu_map = process_cpu_map_event,
2119 .stat_config = process_stat_config_event,
2120 .stat = perf_event__process_stat_event,
2121 .stat_round = process_stat_round_event,
2122 },
2123 .aggr_mode = AGGR_UNSET,
2124 };
2125
2126 static int __cmd_report(int argc, const char **argv)
2127 {
2128 struct perf_session *session;
2129 const struct option options[] = {
2130 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2131 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2132 "aggregate counts per processor socket", AGGR_SOCKET),
2133 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2134 "aggregate counts per physical processor core", AGGR_CORE),
2135 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2136 "disable CPU count aggregation", AGGR_NONE),
2137 OPT_END()
2138 };
2139 struct stat st;
2140 int ret;
2141
2142 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2143
2144 if (!input_name || !strlen(input_name)) {
2145 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2146 input_name = "-";
2147 else
2148 input_name = "perf.data";
2149 }
2150
2151 perf_stat.file.path = input_name;
2152 perf_stat.file.mode = PERF_DATA_MODE_READ;
2153
2154 session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2155 if (session == NULL)
2156 return -1;
2157
2158 perf_stat.session = session;
2159 stat_config.output = stderr;
2160 evsel_list = session->evlist;
2161
2162 ret = perf_session__process_events(session);
2163 if (ret)
2164 return ret;
2165
2166 perf_session__delete(session);
2167 return 0;
2168 }
2169
2170 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
2171 {
2172 const char * const stat_usage[] = {
2173 "perf stat [<options>] [<command>]",
2174 NULL
2175 };
2176 int status = -EINVAL, run_idx;
2177 const char *mode;
2178 FILE *output = stderr;
2179 unsigned int interval;
2180 const char * const stat_subcommands[] = { "record", "report" };
2181
2182 setlocale(LC_ALL, "");
2183
2184 evsel_list = perf_evlist__new();
2185 if (evsel_list == NULL)
2186 return -ENOMEM;
2187
2188 parse_events__shrink_config_terms();
2189 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2190 (const char **) stat_usage,
2191 PARSE_OPT_STOP_AT_NON_OPTION);
2192 perf_stat__init_shadow_stats();
2193
2194 if (csv_sep) {
2195 csv_output = true;
2196 if (!strcmp(csv_sep, "\\t"))
2197 csv_sep = "\t";
2198 } else
2199 csv_sep = DEFAULT_SEPARATOR;
2200
2201 if (argc && !strncmp(argv[0], "rec", 3)) {
2202 argc = __cmd_record(argc, argv);
2203 if (argc < 0)
2204 return -1;
2205 } else if (argc && !strncmp(argv[0], "rep", 3))
2206 return __cmd_report(argc, argv);
2207
2208 interval = stat_config.interval;
2209
2210 /*
2211 * For record command the -o is already taken care of.
2212 */
2213 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2214 output = NULL;
2215
2216 if (output_name && output_fd) {
2217 fprintf(stderr, "cannot use both --output and --log-fd\n");
2218 parse_options_usage(stat_usage, stat_options, "o", 1);
2219 parse_options_usage(NULL, stat_options, "log-fd", 0);
2220 goto out;
2221 }
2222
2223 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2224 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2225 goto out;
2226 }
2227
2228 if (metric_only && run_count > 1) {
2229 fprintf(stderr, "--metric-only is not supported with -r\n");
2230 goto out;
2231 }
2232
2233 if (output_fd < 0) {
2234 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2235 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2236 goto out;
2237 }
2238
2239 if (!output) {
2240 struct timespec tm;
2241 mode = append_file ? "a" : "w";
2242
2243 output = fopen(output_name, mode);
2244 if (!output) {
2245 perror("failed to create output file");
2246 return -1;
2247 }
2248 clock_gettime(CLOCK_REALTIME, &tm);
2249 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2250 } else if (output_fd > 0) {
2251 mode = append_file ? "a" : "w";
2252 output = fdopen(output_fd, mode);
2253 if (!output) {
2254 perror("Failed opening logfd");
2255 return -errno;
2256 }
2257 }
2258
2259 stat_config.output = output;
2260
2261 /*
2262 * let the spreadsheet do the pretty-printing
2263 */
2264 if (csv_output) {
2265 /* User explicitly passed -B? */
2266 if (big_num_opt == 1) {
2267 fprintf(stderr, "-B option not supported with -x\n");
2268 parse_options_usage(stat_usage, stat_options, "B", 1);
2269 parse_options_usage(NULL, stat_options, "x", 1);
2270 goto out;
2271 } else /* Nope, so disable big number formatting */
2272 big_num = false;
2273 } else if (big_num_opt == 0) /* User passed --no-big-num */
2274 big_num = false;
2275
2276 if (!argc && target__none(&target))
2277 usage_with_options(stat_usage, stat_options);
2278
2279 if (run_count < 0) {
2280 pr_err("Run count must be a positive number\n");
2281 parse_options_usage(stat_usage, stat_options, "r", 1);
2282 goto out;
2283 } else if (run_count == 0) {
2284 forever = true;
2285 run_count = 1;
2286 }
2287
2288 if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2289 fprintf(stderr, "The --per-thread option is only available "
2290 "when monitoring via -p -t options.\n");
2291 parse_options_usage(NULL, stat_options, "p", 1);
2292 parse_options_usage(NULL, stat_options, "t", 1);
2293 goto out;
2294 }
2295
2296 /*
2297 * no_aggr, cgroup are for system-wide only
2298 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2299 */
2300 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2301 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2302 !target__has_cpu(&target)) {
2303 fprintf(stderr, "both cgroup and no-aggregation "
2304 "modes only available in system-wide mode\n");
2305
2306 parse_options_usage(stat_usage, stat_options, "G", 1);
2307 parse_options_usage(NULL, stat_options, "A", 1);
2308 parse_options_usage(NULL, stat_options, "a", 1);
2309 goto out;
2310 }
2311
2312 if (add_default_attributes())
2313 goto out;
2314
2315 target__validate(&target);
2316
2317 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2318 if (target__has_task(&target)) {
2319 pr_err("Problems finding threads of monitor\n");
2320 parse_options_usage(stat_usage, stat_options, "p", 1);
2321 parse_options_usage(NULL, stat_options, "t", 1);
2322 } else if (target__has_cpu(&target)) {
2323 perror("failed to parse CPUs map");
2324 parse_options_usage(stat_usage, stat_options, "C", 1);
2325 parse_options_usage(NULL, stat_options, "a", 1);
2326 }
2327 goto out;
2328 }
2329
2330 /*
2331 * Initialize thread_map with comm names,
2332 * so we could print it out on output.
2333 */
2334 if (stat_config.aggr_mode == AGGR_THREAD)
2335 thread_map__read_comms(evsel_list->threads);
2336
2337 if (interval && interval < 100) {
2338 if (interval < 10) {
2339 pr_err("print interval must be >= 10ms\n");
2340 parse_options_usage(stat_usage, stat_options, "I", 1);
2341 goto out;
2342 } else
2343 pr_warning("print interval < 100ms. "
2344 "The overhead percentage could be high in some cases. "
2345 "Please proceed with caution.\n");
2346 }
2347
2348 if (perf_evlist__alloc_stats(evsel_list, interval))
2349 goto out;
2350
2351 if (perf_stat_init_aggr_mode())
2352 goto out;
2353
2354 /*
2355 * We dont want to block the signals - that would cause
2356 * child tasks to inherit that and Ctrl-C would not work.
2357 * What we want is for Ctrl-C to work in the exec()-ed
2358 * task, but being ignored by perf stat itself:
2359 */
2360 atexit(sig_atexit);
2361 if (!forever)
2362 signal(SIGINT, skip_signal);
2363 signal(SIGCHLD, skip_signal);
2364 signal(SIGALRM, skip_signal);
2365 signal(SIGABRT, skip_signal);
2366
2367 status = 0;
2368 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2369 if (run_count != 1 && verbose)
2370 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2371 run_idx + 1);
2372
2373 status = run_perf_stat(argc, argv);
2374 if (forever && status != -1) {
2375 print_counters(NULL, argc, argv);
2376 perf_stat__reset_stats();
2377 }
2378 }
2379
2380 if (!forever && status != -1 && !interval)
2381 print_counters(NULL, argc, argv);
2382
2383 if (STAT_RECORD) {
2384 /*
2385 * We synthesize the kernel mmap record just so that older tools
2386 * don't emit warnings about not being able to resolve symbols
2387 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2388 * a saner message about no samples being in the perf.data file.
2389 *
2390 * This also serves to suppress a warning about f_header.data.size == 0
2391 * in header.c at the moment 'perf stat record' gets introduced, which
2392 * is not really needed once we start adding the stat specific PERF_RECORD_
2393 * records, but the need to suppress the kptr_restrict messages in older
2394 * tools remain -acme
2395 */
2396 int fd = perf_data_file__fd(&perf_stat.file);
2397 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2398 process_synthesized_event,
2399 &perf_stat.session->machines.host);
2400 if (err) {
2401 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2402 "older tools may produce warnings about this file\n.");
2403 }
2404
2405 if (!interval) {
2406 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2407 pr_err("failed to write stat round event\n");
2408 }
2409
2410 if (!perf_stat.file.is_pipe) {
2411 perf_stat.session->header.data_size += perf_stat.bytes_written;
2412 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2413 }
2414
2415 perf_session__delete(perf_stat.session);
2416 }
2417
2418 perf_stat__exit_aggr_mode();
2419 perf_evlist__free_stats(evsel_list);
2420 out:
2421 perf_evlist__delete(evsel_list);
2422 return status;
2423 }
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