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ALSA: doc: ReSTize timestamping document
[linux/fpc-iii.git] / tools / perf / builtin-stat.c
blob688dea7cb08f7337bc6c620f98aa3e996ce4d581
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/drv_configs.h"
56 #include "util/color.h"
57 #include "util/stat.h"
58 #include "util/header.h"
59 #include "util/cpumap.h"
60 #include "util/thread.h"
61 #include "util/thread_map.h"
62 #include "util/counts.h"
63 #include "util/group.h"
64 #include "util/session.h"
65 #include "util/tool.h"
66 #include "util/group.h"
67 #include "asm/bug.h"
68
69 #include <linux/time64.h>
70 #include <api/fs/fs.h>
71 #include <stdlib.h>
72 #include <sys/prctl.h>
73 #include <locale.h>
74 #include <math.h>
75
76 #define DEFAULT_SEPARATOR " "
77 #define CNTR_NOT_SUPPORTED "<not supported>"
78 #define CNTR_NOT_COUNTED "<not counted>"
79
80 static void print_counters(struct timespec *ts, int argc, const char **argv);
81
82 /* Default events used for perf stat -T */
83 static const char *transaction_attrs = {
84 "task-clock,"
85 "{"
86 "instructions,"
87 "cycles,"
88 "cpu/cycles-t/,"
89 "cpu/tx-start/,"
90 "cpu/el-start/,"
91 "cpu/cycles-ct/"
92 "}"
93 };
94
95 /* More limited version when the CPU does not have all events. */
96 static const char * transaction_limited_attrs = {
97 "task-clock,"
98 "{"
99 "instructions,"
100 "cycles,"
101 "cpu/cycles-t/,"
102 "cpu/tx-start/"
103 "}"
104 };
105
106 static const char * topdown_attrs[] = {
107 "topdown-total-slots",
108 "topdown-slots-retired",
109 "topdown-recovery-bubbles",
110 "topdown-fetch-bubbles",
111 "topdown-slots-issued",
112 NULL,
113 };
114
115 static struct perf_evlist *evsel_list;
116
117 static struct target target = {
118 .uid = UINT_MAX,
119 };
120
121 typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
122
123 static int run_count = 1;
124 static bool no_inherit = false;
125 static volatile pid_t child_pid = -1;
126 static bool null_run = false;
127 static int detailed_run = 0;
128 static bool transaction_run;
129 static bool topdown_run = false;
130 static bool big_num = true;
131 static int big_num_opt = -1;
132 static const char *csv_sep = NULL;
133 static bool csv_output = false;
134 static bool group = false;
135 static const char *pre_cmd = NULL;
136 static const char *post_cmd = NULL;
137 static bool sync_run = false;
138 static unsigned int initial_delay = 0;
139 static unsigned int unit_width = 4; /* strlen("unit") */
140 static bool forever = false;
141 static bool metric_only = false;
142 static bool force_metric_only = false;
143 static struct timespec ref_time;
144 static struct cpu_map *aggr_map;
145 static aggr_get_id_t aggr_get_id;
146 static bool append_file;
147 static const char *output_name;
148 static int output_fd;
149
150 struct perf_stat {
151 bool record;
152 struct perf_data_file file;
153 struct perf_session *session;
154 u64 bytes_written;
155 struct perf_tool tool;
156 bool maps_allocated;
157 struct cpu_map *cpus;
158 struct thread_map *threads;
159 enum aggr_mode aggr_mode;
160 };
161
162 static struct perf_stat perf_stat;
163 #define STAT_RECORD perf_stat.record
164
165 static volatile int done = 0;
166
167 static struct perf_stat_config stat_config = {
168 .aggr_mode = AGGR_GLOBAL,
169 .scale = true,
170 };
171
172 static inline void diff_timespec(struct timespec *r, struct timespec *a,
173 struct timespec *b)
174 {
175 r->tv_sec = a->tv_sec - b->tv_sec;
176 if (a->tv_nsec < b->tv_nsec) {
177 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
178 r->tv_sec--;
179 } else {
180 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
181 }
182 }
183
184 static void perf_stat__reset_stats(void)
185 {
186 perf_evlist__reset_stats(evsel_list);
187 perf_stat__reset_shadow_stats();
188 }
189
190 static int create_perf_stat_counter(struct perf_evsel *evsel)
191 {
192 struct perf_event_attr *attr = &evsel->attr;
193
194 if (stat_config.scale)
195 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
196 PERF_FORMAT_TOTAL_TIME_RUNNING;
197
198 attr->inherit = !no_inherit;
199
200 /*
201 * Some events get initialized with sample_(period/type) set,
202 * like tracepoints. Clear it up for counting.
203 */
204 attr->sample_period = 0;
205
206 /*
207 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
208 * while avoiding that older tools show confusing messages.
209 *
210 * However for pipe sessions we need to keep it zero,
211 * because script's perf_evsel__check_attr is triggered
212 * by attr->sample_type != 0, and we can't run it on
213 * stat sessions.
214 */
215 if (!(STAT_RECORD && perf_stat.file.is_pipe))
216 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
217
218 /*
219 * Disabling all counters initially, they will be enabled
220 * either manually by us or by kernel via enable_on_exec
221 * set later.
222 */
223 if (perf_evsel__is_group_leader(evsel)) {
224 attr->disabled = 1;
225
226 /*
227 * In case of initial_delay we enable tracee
228 * events manually.
229 */
230 if (target__none(&target) && !initial_delay)
231 attr->enable_on_exec = 1;
232 }
233
234 if (target__has_cpu(&target))
235 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
236
237 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
238 }
239
240 /*
241 * Does the counter have nsecs as a unit?
242 */
243 static inline int nsec_counter(struct perf_evsel *evsel)
244 {
245 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
246 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
247 return 1;
248
249 return 0;
250 }
251
252 static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
253 union perf_event *event,
254 struct perf_sample *sample __maybe_unused,
255 struct machine *machine __maybe_unused)
256 {
257 if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
258 pr_err("failed to write perf data, error: %m\n");
259 return -1;
260 }
261
262 perf_stat.bytes_written += event->header.size;
263 return 0;
264 }
265
266 static int write_stat_round_event(u64 tm, u64 type)
267 {
268 return perf_event__synthesize_stat_round(NULL, tm, type,
269 process_synthesized_event,
270 NULL);
271 }
272
273 #define WRITE_STAT_ROUND_EVENT(time, interval) \
274 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
275
276 #define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
277
278 static int
279 perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
280 struct perf_counts_values *count)
281 {
282 struct perf_sample_id *sid = SID(counter, cpu, thread);
283
284 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
285 process_synthesized_event, NULL);
286 }
287
288 /*
289 * Read out the results of a single counter:
290 * do not aggregate counts across CPUs in system-wide mode
291 */
292 static int read_counter(struct perf_evsel *counter)
293 {
294 int nthreads = thread_map__nr(evsel_list->threads);
295 int ncpus, cpu, thread;
296
297 if (target__has_cpu(&target))
298 ncpus = perf_evsel__nr_cpus(counter);
299 else
300 ncpus = 1;
301
302 if (!counter->supported)
303 return -ENOENT;
304
305 if (counter->system_wide)
306 nthreads = 1;
307
308 for (thread = 0; thread < nthreads; thread++) {
309 for (cpu = 0; cpu < ncpus; cpu++) {
310 struct perf_counts_values *count;
311
312 count = perf_counts(counter->counts, cpu, thread);
313 if (perf_evsel__read(counter, cpu, thread, count))
314 return -1;
315
316 if (STAT_RECORD) {
317 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
318 pr_err("failed to write stat event\n");
319 return -1;
320 }
321 }
322
323 if (verbose > 1) {
324 fprintf(stat_config.output,
325 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
326 perf_evsel__name(counter),
327 cpu,
328 count->val, count->ena, count->run);
329 }
330 }
331 }
332
333 return 0;
334 }
335
336 static void read_counters(void)
337 {
338 struct perf_evsel *counter;
339
340 evlist__for_each_entry(evsel_list, counter) {
341 if (read_counter(counter))
342 pr_debug("failed to read counter %s\n", counter->name);
343
344 if (perf_stat_process_counter(&stat_config, counter))
345 pr_warning("failed to process counter %s\n", counter->name);
346 }
347 }
348
349 static void process_interval(void)
350 {
351 struct timespec ts, rs;
352
353 read_counters();
354
355 clock_gettime(CLOCK_MONOTONIC, &ts);
356 diff_timespec(&rs, &ts, &ref_time);
357
358 if (STAT_RECORD) {
359 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
360 pr_err("failed to write stat round event\n");
361 }
362
363 print_counters(&rs, 0, NULL);
364 }
365
366 static void enable_counters(void)
367 {
368 if (initial_delay)
369 usleep(initial_delay * USEC_PER_MSEC);
370
371 /*
372 * We need to enable counters only if:
373 * - we don't have tracee (attaching to task or cpu)
374 * - we have initial delay configured
375 */
376 if (!target__none(&target) || initial_delay)
377 perf_evlist__enable(evsel_list);
378 }
379
380 static void disable_counters(void)
381 {
382 /*
383 * If we don't have tracee (attaching to task or cpu), counters may
384 * still be running. To get accurate group ratios, we must stop groups
385 * from counting before reading their constituent counters.
386 */
387 if (!target__none(&target))
388 perf_evlist__disable(evsel_list);
389 }
390
391 static volatile int workload_exec_errno;
392
393 /*
394 * perf_evlist__prepare_workload will send a SIGUSR1
395 * if the fork fails, since we asked by setting its
396 * want_signal to true.
397 */
398 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
399 void *ucontext __maybe_unused)
400 {
401 workload_exec_errno = info->si_value.sival_int;
402 }
403
404 static bool has_unit(struct perf_evsel *counter)
405 {
406 return counter->unit && *counter->unit;
407 }
408
409 static bool has_scale(struct perf_evsel *counter)
410 {
411 return counter->scale != 1;
412 }
413
414 static int perf_stat_synthesize_config(bool is_pipe)
415 {
416 struct perf_evsel *counter;
417 int err;
418
419 if (is_pipe) {
420 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
421 process_synthesized_event);
422 if (err < 0) {
423 pr_err("Couldn't synthesize attrs.\n");
424 return err;
425 }
426 }
427
428 /*
429 * Synthesize other events stuff not carried within
430 * attr event - unit, scale, name
431 */
432 evlist__for_each_entry(evsel_list, counter) {
433 if (!counter->supported)
434 continue;
435
436 /*
437 * Synthesize unit and scale only if it's defined.
438 */
439 if (has_unit(counter)) {
440 err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
441 if (err < 0) {
442 pr_err("Couldn't synthesize evsel unit.\n");
443 return err;
444 }
445 }
446
447 if (has_scale(counter)) {
448 err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
449 if (err < 0) {
450 pr_err("Couldn't synthesize evsel scale.\n");
451 return err;
452 }
453 }
454
455 if (counter->own_cpus) {
456 err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
457 if (err < 0) {
458 pr_err("Couldn't synthesize evsel scale.\n");
459 return err;
460 }
461 }
462
463 /*
464 * Name is needed only for pipe output,
465 * perf.data carries event names.
466 */
467 if (is_pipe) {
468 err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
469 if (err < 0) {
470 pr_err("Couldn't synthesize evsel name.\n");
471 return err;
472 }
473 }
474 }
475
476 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
477 process_synthesized_event,
478 NULL);
479 if (err < 0) {
480 pr_err("Couldn't synthesize thread map.\n");
481 return err;
482 }
483
484 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
485 process_synthesized_event, NULL);
486 if (err < 0) {
487 pr_err("Couldn't synthesize thread map.\n");
488 return err;
489 }
490
491 err = perf_event__synthesize_stat_config(NULL, &stat_config,
492 process_synthesized_event, NULL);
493 if (err < 0) {
494 pr_err("Couldn't synthesize config.\n");
495 return err;
496 }
497
498 return 0;
499 }
500
501 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
502
503 static int __store_counter_ids(struct perf_evsel *counter,
504 struct cpu_map *cpus,
505 struct thread_map *threads)
506 {
507 int cpu, thread;
508
509 for (cpu = 0; cpu < cpus->nr; cpu++) {
510 for (thread = 0; thread < threads->nr; thread++) {
511 int fd = FD(counter, cpu, thread);
512
513 if (perf_evlist__id_add_fd(evsel_list, counter,
514 cpu, thread, fd) < 0)
515 return -1;
516 }
517 }
518
519 return 0;
520 }
521
522 static int store_counter_ids(struct perf_evsel *counter)
523 {
524 struct cpu_map *cpus = counter->cpus;
525 struct thread_map *threads = counter->threads;
526
527 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
528 return -ENOMEM;
529
530 return __store_counter_ids(counter, cpus, threads);
531 }
532
533 static int __run_perf_stat(int argc, const char **argv)
534 {
535 int interval = stat_config.interval;
536 char msg[512];
537 unsigned long long t0, t1;
538 struct perf_evsel *counter;
539 struct timespec ts;
540 size_t l;
541 int status = 0;
542 const bool forks = (argc > 0);
543 bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
544 struct perf_evsel_config_term *err_term;
545
546 if (interval) {
547 ts.tv_sec = interval / USEC_PER_MSEC;
548 ts.tv_nsec = (interval % USEC_PER_MSEC) * NSEC_PER_MSEC;
549 } else {
550 ts.tv_sec = 1;
551 ts.tv_nsec = 0;
552 }
553
554 if (forks) {
555 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
556 workload_exec_failed_signal) < 0) {
557 perror("failed to prepare workload");
558 return -1;
559 }
560 child_pid = evsel_list->workload.pid;
561 }
562
563 if (group)
564 perf_evlist__set_leader(evsel_list);
565
566 evlist__for_each_entry(evsel_list, counter) {
567 try_again:
568 if (create_perf_stat_counter(counter) < 0) {
569 /*
570 * PPC returns ENXIO for HW counters until 2.6.37
571 * (behavior changed with commit b0a873e).
572 */
573 if (errno == EINVAL || errno == ENOSYS ||
574 errno == ENOENT || errno == EOPNOTSUPP ||
575 errno == ENXIO) {
576 if (verbose)
577 ui__warning("%s event is not supported by the kernel.\n",
578 perf_evsel__name(counter));
579 counter->supported = false;
580
581 if ((counter->leader != counter) ||
582 !(counter->leader->nr_members > 1))
583 continue;
584 } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
585 if (verbose)
586 ui__warning("%s\n", msg);
587 goto try_again;
588 }
589
590 perf_evsel__open_strerror(counter, &target,
591 errno, msg, sizeof(msg));
592 ui__error("%s\n", msg);
593
594 if (child_pid != -1)
595 kill(child_pid, SIGTERM);
596
597 return -1;
598 }
599 counter->supported = true;
600
601 l = strlen(counter->unit);
602 if (l > unit_width)
603 unit_width = l;
604
605 if (STAT_RECORD && store_counter_ids(counter))
606 return -1;
607 }
608
609 if (perf_evlist__apply_filters(evsel_list, &counter)) {
610 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
611 counter->filter, perf_evsel__name(counter), errno,
612 str_error_r(errno, msg, sizeof(msg)));
613 return -1;
614 }
615
616 if (perf_evlist__apply_drv_configs(evsel_list, &counter, &err_term)) {
617 error("failed to set config \"%s\" on event %s with %d (%s)\n",
618 err_term->val.drv_cfg, perf_evsel__name(counter), errno,
619 str_error_r(errno, msg, sizeof(msg)));
620 return -1;
621 }
622
623 if (STAT_RECORD) {
624 int err, fd = perf_data_file__fd(&perf_stat.file);
625
626 if (is_pipe) {
627 err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
628 } else {
629 err = perf_session__write_header(perf_stat.session, evsel_list,
630 fd, false);
631 }
632
633 if (err < 0)
634 return err;
635
636 err = perf_stat_synthesize_config(is_pipe);
637 if (err < 0)
638 return err;
639 }
640
641 /*
642 * Enable counters and exec the command:
643 */
644 t0 = rdclock();
645 clock_gettime(CLOCK_MONOTONIC, &ref_time);
646
647 if (forks) {
648 perf_evlist__start_workload(evsel_list);
649 enable_counters();
650
651 if (interval) {
652 while (!waitpid(child_pid, &status, WNOHANG)) {
653 nanosleep(&ts, NULL);
654 process_interval();
655 }
656 }
657 wait(&status);
658
659 if (workload_exec_errno) {
660 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
661 pr_err("Workload failed: %s\n", emsg);
662 return -1;
663 }
664
665 if (WIFSIGNALED(status))
666 psignal(WTERMSIG(status), argv[0]);
667 } else {
668 enable_counters();
669 while (!done) {
670 nanosleep(&ts, NULL);
671 if (interval)
672 process_interval();
673 }
674 }
675
676 disable_counters();
677
678 t1 = rdclock();
679
680 update_stats(&walltime_nsecs_stats, t1 - t0);
681
682 /*
683 * Closing a group leader splits the group, and as we only disable
684 * group leaders, results in remaining events becoming enabled. To
685 * avoid arbitrary skew, we must read all counters before closing any
686 * group leaders.
687 */
688 read_counters();
689 perf_evlist__close(evsel_list);
690
691 return WEXITSTATUS(status);
692 }
693
694 static int run_perf_stat(int argc, const char **argv)
695 {
696 int ret;
697
698 if (pre_cmd) {
699 ret = system(pre_cmd);
700 if (ret)
701 return ret;
702 }
703
704 if (sync_run)
705 sync();
706
707 ret = __run_perf_stat(argc, argv);
708 if (ret)
709 return ret;
710
711 if (post_cmd) {
712 ret = system(post_cmd);
713 if (ret)
714 return ret;
715 }
716
717 return ret;
718 }
719
720 static void print_running(u64 run, u64 ena)
721 {
722 if (csv_output) {
723 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
724 csv_sep,
725 run,
726 csv_sep,
727 ena ? 100.0 * run / ena : 100.0);
728 } else if (run != ena) {
729 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
730 }
731 }
732
733 static void print_noise_pct(double total, double avg)
734 {
735 double pct = rel_stddev_stats(total, avg);
736
737 if (csv_output)
738 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
739 else if (pct)
740 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
741 }
742
743 static void print_noise(struct perf_evsel *evsel, double avg)
744 {
745 struct perf_stat_evsel *ps;
746
747 if (run_count == 1)
748 return;
749
750 ps = evsel->priv;
751 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
752 }
753
754 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
755 {
756 switch (stat_config.aggr_mode) {
757 case AGGR_CORE:
758 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
759 cpu_map__id_to_socket(id),
760 csv_output ? 0 : -8,
761 cpu_map__id_to_cpu(id),
762 csv_sep,
763 csv_output ? 0 : 4,
764 nr,
765 csv_sep);
766 break;
767 case AGGR_SOCKET:
768 fprintf(stat_config.output, "S%*d%s%*d%s",
769 csv_output ? 0 : -5,
770 id,
771 csv_sep,
772 csv_output ? 0 : 4,
773 nr,
774 csv_sep);
775 break;
776 case AGGR_NONE:
777 fprintf(stat_config.output, "CPU%*d%s",
778 csv_output ? 0 : -4,
779 perf_evsel__cpus(evsel)->map[id], csv_sep);
780 break;
781 case AGGR_THREAD:
782 fprintf(stat_config.output, "%*s-%*d%s",
783 csv_output ? 0 : 16,
784 thread_map__comm(evsel->threads, id),
785 csv_output ? 0 : -8,
786 thread_map__pid(evsel->threads, id),
787 csv_sep);
788 break;
789 case AGGR_GLOBAL:
790 case AGGR_UNSET:
791 default:
792 break;
793 }
794 }
795
796 struct outstate {
797 FILE *fh;
798 bool newline;
799 const char *prefix;
800 int nfields;
801 int id, nr;
802 struct perf_evsel *evsel;
803 };
804
805 #define METRIC_LEN 35
806
807 static void new_line_std(void *ctx)
808 {
809 struct outstate *os = ctx;
810
811 os->newline = true;
812 }
813
814 static void do_new_line_std(struct outstate *os)
815 {
816 fputc('\n', os->fh);
817 fputs(os->prefix, os->fh);
818 aggr_printout(os->evsel, os->id, os->nr);
819 if (stat_config.aggr_mode == AGGR_NONE)
820 fprintf(os->fh, " ");
821 fprintf(os->fh, " ");
822 }
823
824 static void print_metric_std(void *ctx, const char *color, const char *fmt,
825 const char *unit, double val)
826 {
827 struct outstate *os = ctx;
828 FILE *out = os->fh;
829 int n;
830 bool newline = os->newline;
831
832 os->newline = false;
833
834 if (unit == NULL || fmt == NULL) {
835 fprintf(out, "%-*s", METRIC_LEN, "");
836 return;
837 }
838
839 if (newline)
840 do_new_line_std(os);
841
842 n = fprintf(out, " # ");
843 if (color)
844 n += color_fprintf(out, color, fmt, val);
845 else
846 n += fprintf(out, fmt, val);
847 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
848 }
849
850 static void new_line_csv(void *ctx)
851 {
852 struct outstate *os = ctx;
853 int i;
854
855 fputc('\n', os->fh);
856 if (os->prefix)
857 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
858 aggr_printout(os->evsel, os->id, os->nr);
859 for (i = 0; i < os->nfields; i++)
860 fputs(csv_sep, os->fh);
861 }
862
863 static void print_metric_csv(void *ctx,
864 const char *color __maybe_unused,
865 const char *fmt, const char *unit, double val)
866 {
867 struct outstate *os = ctx;
868 FILE *out = os->fh;
869 char buf[64], *vals, *ends;
870
871 if (unit == NULL || fmt == NULL) {
872 fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
873 return;
874 }
875 snprintf(buf, sizeof(buf), fmt, val);
876 vals = buf;
877 while (isspace(*vals))
878 vals++;
879 ends = vals;
880 while (isdigit(*ends) || *ends == '.')
881 ends++;
882 *ends = 0;
883 while (isspace(*unit))
884 unit++;
885 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
886 }
887
888 #define METRIC_ONLY_LEN 20
889
890 /* Filter out some columns that don't work well in metrics only mode */
891
892 static bool valid_only_metric(const char *unit)
893 {
894 if (!unit)
895 return false;
896 if (strstr(unit, "/sec") ||
897 strstr(unit, "hz") ||
898 strstr(unit, "Hz") ||
899 strstr(unit, "CPUs utilized"))
900 return false;
901 return true;
902 }
903
904 static const char *fixunit(char *buf, struct perf_evsel *evsel,
905 const char *unit)
906 {
907 if (!strncmp(unit, "of all", 6)) {
908 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
909 unit);
910 return buf;
911 }
912 return unit;
913 }
914
915 static void print_metric_only(void *ctx, const char *color, const char *fmt,
916 const char *unit, double val)
917 {
918 struct outstate *os = ctx;
919 FILE *out = os->fh;
920 int n;
921 char buf[1024];
922 unsigned mlen = METRIC_ONLY_LEN;
923
924 if (!valid_only_metric(unit))
925 return;
926 unit = fixunit(buf, os->evsel, unit);
927 if (color)
928 n = color_fprintf(out, color, fmt, val);
929 else
930 n = fprintf(out, fmt, val);
931 if (n > METRIC_ONLY_LEN)
932 n = METRIC_ONLY_LEN;
933 if (mlen < strlen(unit))
934 mlen = strlen(unit) + 1;
935 fprintf(out, "%*s", mlen - n, "");
936 }
937
938 static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
939 const char *fmt,
940 const char *unit, double val)
941 {
942 struct outstate *os = ctx;
943 FILE *out = os->fh;
944 char buf[64], *vals, *ends;
945 char tbuf[1024];
946
947 if (!valid_only_metric(unit))
948 return;
949 unit = fixunit(tbuf, os->evsel, unit);
950 snprintf(buf, sizeof buf, fmt, val);
951 vals = buf;
952 while (isspace(*vals))
953 vals++;
954 ends = vals;
955 while (isdigit(*ends) || *ends == '.')
956 ends++;
957 *ends = 0;
958 fprintf(out, "%s%s", vals, csv_sep);
959 }
960
961 static void new_line_metric(void *ctx __maybe_unused)
962 {
963 }
964
965 static void print_metric_header(void *ctx, const char *color __maybe_unused,
966 const char *fmt __maybe_unused,
967 const char *unit, double val __maybe_unused)
968 {
969 struct outstate *os = ctx;
970 char tbuf[1024];
971
972 if (!valid_only_metric(unit))
973 return;
974 unit = fixunit(tbuf, os->evsel, unit);
975 if (csv_output)
976 fprintf(os->fh, "%s%s", unit, csv_sep);
977 else
978 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
979 }
980
981 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
982 {
983 FILE *output = stat_config.output;
984 double msecs = avg / NSEC_PER_MSEC;
985 const char *fmt_v, *fmt_n;
986 char name[25];
987
988 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
989 fmt_n = csv_output ? "%s" : "%-25s";
990
991 aggr_printout(evsel, id, nr);
992
993 scnprintf(name, sizeof(name), "%s%s",
994 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
995
996 fprintf(output, fmt_v, msecs, csv_sep);
997
998 if (csv_output)
999 fprintf(output, "%s%s", evsel->unit, csv_sep);
1000 else
1001 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
1002
1003 fprintf(output, fmt_n, name);
1004
1005 if (evsel->cgrp)
1006 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1007 }
1008
1009 static int first_shadow_cpu(struct perf_evsel *evsel, int id)
1010 {
1011 int i;
1012
1013 if (!aggr_get_id)
1014 return 0;
1015
1016 if (stat_config.aggr_mode == AGGR_NONE)
1017 return id;
1018
1019 if (stat_config.aggr_mode == AGGR_GLOBAL)
1020 return 0;
1021
1022 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
1023 int cpu2 = perf_evsel__cpus(evsel)->map[i];
1024
1025 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
1026 return cpu2;
1027 }
1028 return 0;
1029 }
1030
1031 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1032 {
1033 FILE *output = stat_config.output;
1034 double sc = evsel->scale;
1035 const char *fmt;
1036
1037 if (csv_output) {
1038 fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
1039 } else {
1040 if (big_num)
1041 fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
1042 else
1043 fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
1044 }
1045
1046 aggr_printout(evsel, id, nr);
1047
1048 fprintf(output, fmt, avg, csv_sep);
1049
1050 if (evsel->unit)
1051 fprintf(output, "%-*s%s",
1052 csv_output ? 0 : unit_width,
1053 evsel->unit, csv_sep);
1054
1055 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1056
1057 if (evsel->cgrp)
1058 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1059 }
1060
1061 static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1062 char *prefix, u64 run, u64 ena, double noise)
1063 {
1064 struct perf_stat_output_ctx out;
1065 struct outstate os = {
1066 .fh = stat_config.output,
1067 .prefix = prefix ? prefix : "",
1068 .id = id,
1069 .nr = nr,
1070 .evsel = counter,
1071 };
1072 print_metric_t pm = print_metric_std;
1073 void (*nl)(void *);
1074
1075 if (metric_only) {
1076 nl = new_line_metric;
1077 if (csv_output)
1078 pm = print_metric_only_csv;
1079 else
1080 pm = print_metric_only;
1081 } else
1082 nl = new_line_std;
1083
1084 if (csv_output && !metric_only) {
1085 static int aggr_fields[] = {
1086 [AGGR_GLOBAL] = 0,
1087 [AGGR_THREAD] = 1,
1088 [AGGR_NONE] = 1,
1089 [AGGR_SOCKET] = 2,
1090 [AGGR_CORE] = 2,
1091 };
1092
1093 pm = print_metric_csv;
1094 nl = new_line_csv;
1095 os.nfields = 3;
1096 os.nfields += aggr_fields[stat_config.aggr_mode];
1097 if (counter->cgrp)
1098 os.nfields++;
1099 }
1100 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1101 if (metric_only) {
1102 pm(&os, NULL, "", "", 0);
1103 return;
1104 }
1105 aggr_printout(counter, id, nr);
1106
1107 fprintf(stat_config.output, "%*s%s",
1108 csv_output ? 0 : 18,
1109 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1110 csv_sep);
1111
1112 fprintf(stat_config.output, "%-*s%s",
1113 csv_output ? 0 : unit_width,
1114 counter->unit, csv_sep);
1115
1116 fprintf(stat_config.output, "%*s",
1117 csv_output ? 0 : -25,
1118 perf_evsel__name(counter));
1119
1120 if (counter->cgrp)
1121 fprintf(stat_config.output, "%s%s",
1122 csv_sep, counter->cgrp->name);
1123
1124 if (!csv_output)
1125 pm(&os, NULL, NULL, "", 0);
1126 print_noise(counter, noise);
1127 print_running(run, ena);
1128 if (csv_output)
1129 pm(&os, NULL, NULL, "", 0);
1130 return;
1131 }
1132
1133 if (metric_only)
1134 /* nothing */;
1135 else if (nsec_counter(counter))
1136 nsec_printout(id, nr, counter, uval);
1137 else
1138 abs_printout(id, nr, counter, uval);
1139
1140 out.print_metric = pm;
1141 out.new_line = nl;
1142 out.ctx = &os;
1143
1144 if (csv_output && !metric_only) {
1145 print_noise(counter, noise);
1146 print_running(run, ena);
1147 }
1148
1149 perf_stat__print_shadow_stats(counter, uval,
1150 first_shadow_cpu(counter, id),
1151 &out);
1152 if (!csv_output && !metric_only) {
1153 print_noise(counter, noise);
1154 print_running(run, ena);
1155 }
1156 }
1157
1158 static void aggr_update_shadow(void)
1159 {
1160 int cpu, s2, id, s;
1161 u64 val;
1162 struct perf_evsel *counter;
1163
1164 for (s = 0; s < aggr_map->nr; s++) {
1165 id = aggr_map->map[s];
1166 evlist__for_each_entry(evsel_list, counter) {
1167 val = 0;
1168 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1169 s2 = aggr_get_id(evsel_list->cpus, cpu);
1170 if (s2 != id)
1171 continue;
1172 val += perf_counts(counter->counts, cpu, 0)->val;
1173 }
1174 val = val * counter->scale;
1175 perf_stat__update_shadow_stats(counter, &val,
1176 first_shadow_cpu(counter, id));
1177 }
1178 }
1179 }
1180
1181 static void print_aggr(char *prefix)
1182 {
1183 FILE *output = stat_config.output;
1184 struct perf_evsel *counter;
1185 int cpu, s, s2, id, nr;
1186 double uval;
1187 u64 ena, run, val;
1188 bool first;
1189
1190 if (!(aggr_map || aggr_get_id))
1191 return;
1192
1193 aggr_update_shadow();
1194
1195 /*
1196 * With metric_only everything is on a single line.
1197 * Without each counter has its own line.
1198 */
1199 for (s = 0; s < aggr_map->nr; s++) {
1200 if (prefix && metric_only)
1201 fprintf(output, "%s", prefix);
1202
1203 id = aggr_map->map[s];
1204 first = true;
1205 evlist__for_each_entry(evsel_list, counter) {
1206 val = ena = run = 0;
1207 nr = 0;
1208 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1209 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1210 if (s2 != id)
1211 continue;
1212 val += perf_counts(counter->counts, cpu, 0)->val;
1213 ena += perf_counts(counter->counts, cpu, 0)->ena;
1214 run += perf_counts(counter->counts, cpu, 0)->run;
1215 nr++;
1216 }
1217 if (first && metric_only) {
1218 first = false;
1219 aggr_printout(counter, id, nr);
1220 }
1221 if (prefix && !metric_only)
1222 fprintf(output, "%s", prefix);
1223
1224 uval = val * counter->scale;
1225 printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1226 if (!metric_only)
1227 fputc('\n', output);
1228 }
1229 if (metric_only)
1230 fputc('\n', output);
1231 }
1232 }
1233
1234 static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1235 {
1236 FILE *output = stat_config.output;
1237 int nthreads = thread_map__nr(counter->threads);
1238 int ncpus = cpu_map__nr(counter->cpus);
1239 int cpu, thread;
1240 double uval;
1241
1242 for (thread = 0; thread < nthreads; thread++) {
1243 u64 ena = 0, run = 0, val = 0;
1244
1245 for (cpu = 0; cpu < ncpus; cpu++) {
1246 val += perf_counts(counter->counts, cpu, thread)->val;
1247 ena += perf_counts(counter->counts, cpu, thread)->ena;
1248 run += perf_counts(counter->counts, cpu, thread)->run;
1249 }
1250
1251 if (prefix)
1252 fprintf(output, "%s", prefix);
1253
1254 uval = val * counter->scale;
1255 printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1256 fputc('\n', output);
1257 }
1258 }
1259
1260 /*
1261 * Print out the results of a single counter:
1262 * aggregated counts in system-wide mode
1263 */
1264 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1265 {
1266 FILE *output = stat_config.output;
1267 struct perf_stat_evsel *ps = counter->priv;
1268 double avg = avg_stats(&ps->res_stats[0]);
1269 double uval;
1270 double avg_enabled, avg_running;
1271
1272 avg_enabled = avg_stats(&ps->res_stats[1]);
1273 avg_running = avg_stats(&ps->res_stats[2]);
1274
1275 if (prefix && !metric_only)
1276 fprintf(output, "%s", prefix);
1277
1278 uval = avg * counter->scale;
1279 printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1280 if (!metric_only)
1281 fprintf(output, "\n");
1282 }
1283
1284 /*
1285 * Print out the results of a single counter:
1286 * does not use aggregated count in system-wide
1287 */
1288 static void print_counter(struct perf_evsel *counter, char *prefix)
1289 {
1290 FILE *output = stat_config.output;
1291 u64 ena, run, val;
1292 double uval;
1293 int cpu;
1294
1295 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1296 val = perf_counts(counter->counts, cpu, 0)->val;
1297 ena = perf_counts(counter->counts, cpu, 0)->ena;
1298 run = perf_counts(counter->counts, cpu, 0)->run;
1299
1300 if (prefix)
1301 fprintf(output, "%s", prefix);
1302
1303 uval = val * counter->scale;
1304 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1305
1306 fputc('\n', output);
1307 }
1308 }
1309
1310 static void print_no_aggr_metric(char *prefix)
1311 {
1312 int cpu;
1313 int nrcpus = 0;
1314 struct perf_evsel *counter;
1315 u64 ena, run, val;
1316 double uval;
1317
1318 nrcpus = evsel_list->cpus->nr;
1319 for (cpu = 0; cpu < nrcpus; cpu++) {
1320 bool first = true;
1321
1322 if (prefix)
1323 fputs(prefix, stat_config.output);
1324 evlist__for_each_entry(evsel_list, counter) {
1325 if (first) {
1326 aggr_printout(counter, cpu, 0);
1327 first = false;
1328 }
1329 val = perf_counts(counter->counts, cpu, 0)->val;
1330 ena = perf_counts(counter->counts, cpu, 0)->ena;
1331 run = perf_counts(counter->counts, cpu, 0)->run;
1332
1333 uval = val * counter->scale;
1334 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1335 }
1336 fputc('\n', stat_config.output);
1337 }
1338 }
1339
1340 static int aggr_header_lens[] = {
1341 [AGGR_CORE] = 18,
1342 [AGGR_SOCKET] = 12,
1343 [AGGR_NONE] = 6,
1344 [AGGR_THREAD] = 24,
1345 [AGGR_GLOBAL] = 0,
1346 };
1347
1348 static const char *aggr_header_csv[] = {
1349 [AGGR_CORE] = "core,cpus,",
1350 [AGGR_SOCKET] = "socket,cpus",
1351 [AGGR_NONE] = "cpu,",
1352 [AGGR_THREAD] = "comm-pid,",
1353 [AGGR_GLOBAL] = ""
1354 };
1355
1356 static void print_metric_headers(const char *prefix, bool no_indent)
1357 {
1358 struct perf_stat_output_ctx out;
1359 struct perf_evsel *counter;
1360 struct outstate os = {
1361 .fh = stat_config.output
1362 };
1363
1364 if (prefix)
1365 fprintf(stat_config.output, "%s", prefix);
1366
1367 if (!csv_output && !no_indent)
1368 fprintf(stat_config.output, "%*s",
1369 aggr_header_lens[stat_config.aggr_mode], "");
1370 if (csv_output) {
1371 if (stat_config.interval)
1372 fputs("time,", stat_config.output);
1373 fputs(aggr_header_csv[stat_config.aggr_mode],
1374 stat_config.output);
1375 }
1376
1377 /* Print metrics headers only */
1378 evlist__for_each_entry(evsel_list, counter) {
1379 os.evsel = counter;
1380 out.ctx = &os;
1381 out.print_metric = print_metric_header;
1382 out.new_line = new_line_metric;
1383 os.evsel = counter;
1384 perf_stat__print_shadow_stats(counter, 0,
1385 0,
1386 &out);
1387 }
1388 fputc('\n', stat_config.output);
1389 }
1390
1391 static void print_interval(char *prefix, struct timespec *ts)
1392 {
1393 FILE *output = stat_config.output;
1394 static int num_print_interval;
1395
1396 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1397
1398 if (num_print_interval == 0 && !csv_output) {
1399 switch (stat_config.aggr_mode) {
1400 case AGGR_SOCKET:
1401 fprintf(output, "# time socket cpus");
1402 if (!metric_only)
1403 fprintf(output, " counts %*s events\n", unit_width, "unit");
1404 break;
1405 case AGGR_CORE:
1406 fprintf(output, "# time core cpus");
1407 if (!metric_only)
1408 fprintf(output, " counts %*s events\n", unit_width, "unit");
1409 break;
1410 case AGGR_NONE:
1411 fprintf(output, "# time CPU");
1412 if (!metric_only)
1413 fprintf(output, " counts %*s events\n", unit_width, "unit");
1414 break;
1415 case AGGR_THREAD:
1416 fprintf(output, "# time comm-pid");
1417 if (!metric_only)
1418 fprintf(output, " counts %*s events\n", unit_width, "unit");
1419 break;
1420 case AGGR_GLOBAL:
1421 default:
1422 fprintf(output, "# time");
1423 if (!metric_only)
1424 fprintf(output, " counts %*s events\n", unit_width, "unit");
1425 case AGGR_UNSET:
1426 break;
1427 }
1428 }
1429
1430 if (num_print_interval == 0 && metric_only)
1431 print_metric_headers(" ", true);
1432 if (++num_print_interval == 25)
1433 num_print_interval = 0;
1434 }
1435
1436 static void print_header(int argc, const char **argv)
1437 {
1438 FILE *output = stat_config.output;
1439 int i;
1440
1441 fflush(stdout);
1442
1443 if (!csv_output) {
1444 fprintf(output, "\n");
1445 fprintf(output, " Performance counter stats for ");
1446 if (target.system_wide)
1447 fprintf(output, "\'system wide");
1448 else if (target.cpu_list)
1449 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1450 else if (!target__has_task(&target)) {
1451 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1452 for (i = 1; argv && (i < argc); i++)
1453 fprintf(output, " %s", argv[i]);
1454 } else if (target.pid)
1455 fprintf(output, "process id \'%s", target.pid);
1456 else
1457 fprintf(output, "thread id \'%s", target.tid);
1458
1459 fprintf(output, "\'");
1460 if (run_count > 1)
1461 fprintf(output, " (%d runs)", run_count);
1462 fprintf(output, ":\n\n");
1463 }
1464 }
1465
1466 static void print_footer(void)
1467 {
1468 FILE *output = stat_config.output;
1469
1470 if (!null_run)
1471 fprintf(output, "\n");
1472 fprintf(output, " %17.9f seconds time elapsed",
1473 avg_stats(&walltime_nsecs_stats) / NSEC_PER_SEC);
1474 if (run_count > 1) {
1475 fprintf(output, " ");
1476 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1477 avg_stats(&walltime_nsecs_stats));
1478 }
1479 fprintf(output, "\n\n");
1480 }
1481
1482 static void print_counters(struct timespec *ts, int argc, const char **argv)
1483 {
1484 int interval = stat_config.interval;
1485 struct perf_evsel *counter;
1486 char buf[64], *prefix = NULL;
1487
1488 /* Do not print anything if we record to the pipe. */
1489 if (STAT_RECORD && perf_stat.file.is_pipe)
1490 return;
1491
1492 if (interval)
1493 print_interval(prefix = buf, ts);
1494 else
1495 print_header(argc, argv);
1496
1497 if (metric_only) {
1498 static int num_print_iv;
1499
1500 if (num_print_iv == 0 && !interval)
1501 print_metric_headers(prefix, false);
1502 if (num_print_iv++ == 25)
1503 num_print_iv = 0;
1504 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1505 fprintf(stat_config.output, "%s", prefix);
1506 }
1507
1508 switch (stat_config.aggr_mode) {
1509 case AGGR_CORE:
1510 case AGGR_SOCKET:
1511 print_aggr(prefix);
1512 break;
1513 case AGGR_THREAD:
1514 evlist__for_each_entry(evsel_list, counter)
1515 print_aggr_thread(counter, prefix);
1516 break;
1517 case AGGR_GLOBAL:
1518 evlist__for_each_entry(evsel_list, counter)
1519 print_counter_aggr(counter, prefix);
1520 if (metric_only)
1521 fputc('\n', stat_config.output);
1522 break;
1523 case AGGR_NONE:
1524 if (metric_only)
1525 print_no_aggr_metric(prefix);
1526 else {
1527 evlist__for_each_entry(evsel_list, counter)
1528 print_counter(counter, prefix);
1529 }
1530 break;
1531 case AGGR_UNSET:
1532 default:
1533 break;
1534 }
1535
1536 if (!interval && !csv_output)
1537 print_footer();
1538
1539 fflush(stat_config.output);
1540 }
1541
1542 static volatile int signr = -1;
1543
1544 static void skip_signal(int signo)
1545 {
1546 if ((child_pid == -1) || stat_config.interval)
1547 done = 1;
1548
1549 signr = signo;
1550 /*
1551 * render child_pid harmless
1552 * won't send SIGTERM to a random
1553 * process in case of race condition
1554 * and fast PID recycling
1555 */
1556 child_pid = -1;
1557 }
1558
1559 static void sig_atexit(void)
1560 {
1561 sigset_t set, oset;
1562
1563 /*
1564 * avoid race condition with SIGCHLD handler
1565 * in skip_signal() which is modifying child_pid
1566 * goal is to avoid send SIGTERM to a random
1567 * process
1568 */
1569 sigemptyset(&set);
1570 sigaddset(&set, SIGCHLD);
1571 sigprocmask(SIG_BLOCK, &set, &oset);
1572
1573 if (child_pid != -1)
1574 kill(child_pid, SIGTERM);
1575
1576 sigprocmask(SIG_SETMASK, &oset, NULL);
1577
1578 if (signr == -1)
1579 return;
1580
1581 signal(signr, SIG_DFL);
1582 kill(getpid(), signr);
1583 }
1584
1585 static int stat__set_big_num(const struct option *opt __maybe_unused,
1586 const char *s __maybe_unused, int unset)
1587 {
1588 big_num_opt = unset ? 0 : 1;
1589 return 0;
1590 }
1591
1592 static int enable_metric_only(const struct option *opt __maybe_unused,
1593 const char *s __maybe_unused, int unset)
1594 {
1595 force_metric_only = true;
1596 metric_only = !unset;
1597 return 0;
1598 }
1599
1600 static const struct option stat_options[] = {
1601 OPT_BOOLEAN('T', "transaction", &transaction_run,
1602 "hardware transaction statistics"),
1603 OPT_CALLBACK('e', "event", &evsel_list, "event",
1604 "event selector. use 'perf list' to list available events",
1605 parse_events_option),
1606 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1607 "event filter", parse_filter),
1608 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1609 "child tasks do not inherit counters"),
1610 OPT_STRING('p', "pid", &target.pid, "pid",
1611 "stat events on existing process id"),
1612 OPT_STRING('t', "tid", &target.tid, "tid",
1613 "stat events on existing thread id"),
1614 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1615 "system-wide collection from all CPUs"),
1616 OPT_BOOLEAN('g', "group", &group,
1617 "put the counters into a counter group"),
1618 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1619 OPT_INCR('v', "verbose", &verbose,
1620 "be more verbose (show counter open errors, etc)"),
1621 OPT_INTEGER('r', "repeat", &run_count,
1622 "repeat command and print average + stddev (max: 100, forever: 0)"),
1623 OPT_BOOLEAN('n', "null", &null_run,
1624 "null run - dont start any counters"),
1625 OPT_INCR('d', "detailed", &detailed_run,
1626 "detailed run - start a lot of events"),
1627 OPT_BOOLEAN('S', "sync", &sync_run,
1628 "call sync() before starting a run"),
1629 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1630 "print large numbers with thousands\' separators",
1631 stat__set_big_num),
1632 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1633 "list of cpus to monitor in system-wide"),
1634 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1635 "disable CPU count aggregation", AGGR_NONE),
1636 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1637 "print counts with custom separator"),
1638 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1639 "monitor event in cgroup name only", parse_cgroups),
1640 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1641 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1642 OPT_INTEGER(0, "log-fd", &output_fd,
1643 "log output to fd, instead of stderr"),
1644 OPT_STRING(0, "pre", &pre_cmd, "command",
1645 "command to run prior to the measured command"),
1646 OPT_STRING(0, "post", &post_cmd, "command",
1647 "command to run after to the measured command"),
1648 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1649 "print counts at regular interval in ms (>= 10)"),
1650 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1651 "aggregate counts per processor socket", AGGR_SOCKET),
1652 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1653 "aggregate counts per physical processor core", AGGR_CORE),
1654 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1655 "aggregate counts per thread", AGGR_THREAD),
1656 OPT_UINTEGER('D', "delay", &initial_delay,
1657 "ms to wait before starting measurement after program start"),
1658 OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
1659 "Only print computed metrics. No raw values", enable_metric_only),
1660 OPT_BOOLEAN(0, "topdown", &topdown_run,
1661 "measure topdown level 1 statistics"),
1662 OPT_END()
1663 };
1664
1665 static int perf_stat__get_socket(struct cpu_map *map, int cpu)
1666 {
1667 return cpu_map__get_socket(map, cpu, NULL);
1668 }
1669
1670 static int perf_stat__get_core(struct cpu_map *map, int cpu)
1671 {
1672 return cpu_map__get_core(map, cpu, NULL);
1673 }
1674
1675 static int cpu_map__get_max(struct cpu_map *map)
1676 {
1677 int i, max = -1;
1678
1679 for (i = 0; i < map->nr; i++) {
1680 if (map->map[i] > max)
1681 max = map->map[i];
1682 }
1683
1684 return max;
1685 }
1686
1687 static struct cpu_map *cpus_aggr_map;
1688
1689 static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
1690 {
1691 int cpu;
1692
1693 if (idx >= map->nr)
1694 return -1;
1695
1696 cpu = map->map[idx];
1697
1698 if (cpus_aggr_map->map[cpu] == -1)
1699 cpus_aggr_map->map[cpu] = get_id(map, idx);
1700
1701 return cpus_aggr_map->map[cpu];
1702 }
1703
1704 static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
1705 {
1706 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1707 }
1708
1709 static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
1710 {
1711 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1712 }
1713
1714 static int perf_stat_init_aggr_mode(void)
1715 {
1716 int nr;
1717
1718 switch (stat_config.aggr_mode) {
1719 case AGGR_SOCKET:
1720 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1721 perror("cannot build socket map");
1722 return -1;
1723 }
1724 aggr_get_id = perf_stat__get_socket_cached;
1725 break;
1726 case AGGR_CORE:
1727 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1728 perror("cannot build core map");
1729 return -1;
1730 }
1731 aggr_get_id = perf_stat__get_core_cached;
1732 break;
1733 case AGGR_NONE:
1734 case AGGR_GLOBAL:
1735 case AGGR_THREAD:
1736 case AGGR_UNSET:
1737 default:
1738 break;
1739 }
1740
1741 /*
1742 * The evsel_list->cpus is the base we operate on,
1743 * taking the highest cpu number to be the size of
1744 * the aggregation translate cpumap.
1745 */
1746 nr = cpu_map__get_max(evsel_list->cpus);
1747 cpus_aggr_map = cpu_map__empty_new(nr + 1);
1748 return cpus_aggr_map ? 0 : -ENOMEM;
1749 }
1750
1751 static void perf_stat__exit_aggr_mode(void)
1752 {
1753 cpu_map__put(aggr_map);
1754 cpu_map__put(cpus_aggr_map);
1755 aggr_map = NULL;
1756 cpus_aggr_map = NULL;
1757 }
1758
1759 static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1760 {
1761 int cpu;
1762
1763 if (idx > map->nr)
1764 return -1;
1765
1766 cpu = map->map[idx];
1767
1768 if (cpu >= env->nr_cpus_online)
1769 return -1;
1770
1771 return cpu;
1772 }
1773
1774 static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1775 {
1776 struct perf_env *env = data;
1777 int cpu = perf_env__get_cpu(env, map, idx);
1778
1779 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
1780 }
1781
1782 static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1783 {
1784 struct perf_env *env = data;
1785 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1786
1787 if (cpu != -1) {
1788 int socket_id = env->cpu[cpu].socket_id;
1789
1790 /*
1791 * Encode socket in upper 16 bits
1792 * core_id is relative to socket, and
1793 * we need a global id. So we combine
1794 * socket + core id.
1795 */
1796 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
1797 }
1798
1799 return core;
1800 }
1801
1802 static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1803 struct cpu_map **sockp)
1804 {
1805 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1806 }
1807
1808 static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1809 struct cpu_map **corep)
1810 {
1811 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1812 }
1813
1814 static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
1815 {
1816 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1817 }
1818
1819 static int perf_stat__get_core_file(struct cpu_map *map, int idx)
1820 {
1821 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1822 }
1823
1824 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1825 {
1826 struct perf_env *env = &st->session->header.env;
1827
1828 switch (stat_config.aggr_mode) {
1829 case AGGR_SOCKET:
1830 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1831 perror("cannot build socket map");
1832 return -1;
1833 }
1834 aggr_get_id = perf_stat__get_socket_file;
1835 break;
1836 case AGGR_CORE:
1837 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1838 perror("cannot build core map");
1839 return -1;
1840 }
1841 aggr_get_id = perf_stat__get_core_file;
1842 break;
1843 case AGGR_NONE:
1844 case AGGR_GLOBAL:
1845 case AGGR_THREAD:
1846 case AGGR_UNSET:
1847 default:
1848 break;
1849 }
1850
1851 return 0;
1852 }
1853
1854 static int topdown_filter_events(const char **attr, char **str, bool use_group)
1855 {
1856 int off = 0;
1857 int i;
1858 int len = 0;
1859 char *s;
1860
1861 for (i = 0; attr[i]; i++) {
1862 if (pmu_have_event("cpu", attr[i])) {
1863 len += strlen(attr[i]) + 1;
1864 attr[i - off] = attr[i];
1865 } else
1866 off++;
1867 }
1868 attr[i - off] = NULL;
1869
1870 *str = malloc(len + 1 + 2);
1871 if (!*str)
1872 return -1;
1873 s = *str;
1874 if (i - off == 0) {
1875 *s = 0;
1876 return 0;
1877 }
1878 if (use_group)
1879 *s++ = '{';
1880 for (i = 0; attr[i]; i++) {
1881 strcpy(s, attr[i]);
1882 s += strlen(s);
1883 *s++ = ',';
1884 }
1885 if (use_group) {
1886 s[-1] = '}';
1887 *s = 0;
1888 } else
1889 s[-1] = 0;
1890 return 0;
1891 }
1892
1893 __weak bool arch_topdown_check_group(bool *warn)
1894 {
1895 *warn = false;
1896 return false;
1897 }
1898
1899 __weak void arch_topdown_group_warn(void)
1900 {
1901 }
1902
1903 /*
1904 * Add default attributes, if there were no attributes specified or
1905 * if -d/--detailed, -d -d or -d -d -d is used:
1906 */
1907 static int add_default_attributes(void)
1908 {
1909 int err;
1910 struct perf_event_attr default_attrs0[] = {
1911
1912 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1913 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1914 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1915 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1916
1917 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1918 };
1919 struct perf_event_attr frontend_attrs[] = {
1920 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1921 };
1922 struct perf_event_attr backend_attrs[] = {
1923 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1924 };
1925 struct perf_event_attr default_attrs1[] = {
1926 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1927 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1928 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1929
1930 };
1931
1932 /*
1933 * Detailed stats (-d), covering the L1 and last level data caches:
1934 */
1935 struct perf_event_attr detailed_attrs[] = {
1936
1937 { .type = PERF_TYPE_HW_CACHE,
1938 .config =
1939 PERF_COUNT_HW_CACHE_L1D << 0 |
1940 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1941 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1942
1943 { .type = PERF_TYPE_HW_CACHE,
1944 .config =
1945 PERF_COUNT_HW_CACHE_L1D << 0 |
1946 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1947 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1948
1949 { .type = PERF_TYPE_HW_CACHE,
1950 .config =
1951 PERF_COUNT_HW_CACHE_LL << 0 |
1952 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1953 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1954
1955 { .type = PERF_TYPE_HW_CACHE,
1956 .config =
1957 PERF_COUNT_HW_CACHE_LL << 0 |
1958 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1959 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1960 };
1961
1962 /*
1963 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1964 */
1965 struct perf_event_attr very_detailed_attrs[] = {
1966
1967 { .type = PERF_TYPE_HW_CACHE,
1968 .config =
1969 PERF_COUNT_HW_CACHE_L1I << 0 |
1970 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1971 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1972
1973 { .type = PERF_TYPE_HW_CACHE,
1974 .config =
1975 PERF_COUNT_HW_CACHE_L1I << 0 |
1976 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1977 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1978
1979 { .type = PERF_TYPE_HW_CACHE,
1980 .config =
1981 PERF_COUNT_HW_CACHE_DTLB << 0 |
1982 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1983 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1984
1985 { .type = PERF_TYPE_HW_CACHE,
1986 .config =
1987 PERF_COUNT_HW_CACHE_DTLB << 0 |
1988 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1989 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1990
1991 { .type = PERF_TYPE_HW_CACHE,
1992 .config =
1993 PERF_COUNT_HW_CACHE_ITLB << 0 |
1994 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1995 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1996
1997 { .type = PERF_TYPE_HW_CACHE,
1998 .config =
1999 PERF_COUNT_HW_CACHE_ITLB << 0 |
2000 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2001 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2002
2003 };
2004
2005 /*
2006 * Very, very detailed stats (-d -d -d), adding prefetch events:
2007 */
2008 struct perf_event_attr very_very_detailed_attrs[] = {
2009
2010 { .type = PERF_TYPE_HW_CACHE,
2011 .config =
2012 PERF_COUNT_HW_CACHE_L1D << 0 |
2013 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2014 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2015
2016 { .type = PERF_TYPE_HW_CACHE,
2017 .config =
2018 PERF_COUNT_HW_CACHE_L1D << 0 |
2019 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2020 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2021 };
2022
2023 /* Set attrs if no event is selected and !null_run: */
2024 if (null_run)
2025 return 0;
2026
2027 if (transaction_run) {
2028 if (pmu_have_event("cpu", "cycles-ct") &&
2029 pmu_have_event("cpu", "el-start"))
2030 err = parse_events(evsel_list, transaction_attrs, NULL);
2031 else
2032 err = parse_events(evsel_list, transaction_limited_attrs, NULL);
2033 if (err) {
2034 fprintf(stderr, "Cannot set up transaction events\n");
2035 return -1;
2036 }
2037 return 0;
2038 }
2039
2040 if (topdown_run) {
2041 char *str = NULL;
2042 bool warn = false;
2043
2044 if (stat_config.aggr_mode != AGGR_GLOBAL &&
2045 stat_config.aggr_mode != AGGR_CORE) {
2046 pr_err("top down event configuration requires --per-core mode\n");
2047 return -1;
2048 }
2049 stat_config.aggr_mode = AGGR_CORE;
2050 if (nr_cgroups || !target__has_cpu(&target)) {
2051 pr_err("top down event configuration requires system-wide mode (-a)\n");
2052 return -1;
2053 }
2054
2055 if (!force_metric_only)
2056 metric_only = true;
2057 if (topdown_filter_events(topdown_attrs, &str,
2058 arch_topdown_check_group(&warn)) < 0) {
2059 pr_err("Out of memory\n");
2060 return -1;
2061 }
2062 if (topdown_attrs[0] && str) {
2063 if (warn)
2064 arch_topdown_group_warn();
2065 err = parse_events(evsel_list, str, NULL);
2066 if (err) {
2067 fprintf(stderr,
2068 "Cannot set up top down events %s: %d\n",
2069 str, err);
2070 free(str);
2071 return -1;
2072 }
2073 } else {
2074 fprintf(stderr, "System does not support topdown\n");
2075 return -1;
2076 }
2077 free(str);
2078 }
2079
2080 if (!evsel_list->nr_entries) {
2081 if (target__has_cpu(&target))
2082 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
2083
2084 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2085 return -1;
2086 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
2087 if (perf_evlist__add_default_attrs(evsel_list,
2088 frontend_attrs) < 0)
2089 return -1;
2090 }
2091 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
2092 if (perf_evlist__add_default_attrs(evsel_list,
2093 backend_attrs) < 0)
2094 return -1;
2095 }
2096 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2097 return -1;
2098 }
2099
2100 /* Detailed events get appended to the event list: */
2101
2102 if (detailed_run < 1)
2103 return 0;
2104
2105 /* Append detailed run extra attributes: */
2106 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2107 return -1;
2108
2109 if (detailed_run < 2)
2110 return 0;
2111
2112 /* Append very detailed run extra attributes: */
2113 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2114 return -1;
2115
2116 if (detailed_run < 3)
2117 return 0;
2118
2119 /* Append very, very detailed run extra attributes: */
2120 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2121 }
2122
2123 static const char * const stat_record_usage[] = {
2124 "perf stat record [<options>]",
2125 NULL,
2126 };
2127
2128 static void init_features(struct perf_session *session)
2129 {
2130 int feat;
2131
2132 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2133 perf_header__set_feat(&session->header, feat);
2134
2135 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2136 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2137 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2138 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2139 }
2140
2141 static int __cmd_record(int argc, const char **argv)
2142 {
2143 struct perf_session *session;
2144 struct perf_data_file *file = &perf_stat.file;
2145
2146 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2147 PARSE_OPT_STOP_AT_NON_OPTION);
2148
2149 if (output_name)
2150 file->path = output_name;
2151
2152 if (run_count != 1 || forever) {
2153 pr_err("Cannot use -r option with perf stat record.\n");
2154 return -1;
2155 }
2156
2157 session = perf_session__new(file, false, NULL);
2158 if (session == NULL) {
2159 pr_err("Perf session creation failed.\n");
2160 return -1;
2161 }
2162
2163 init_features(session);
2164
2165 session->evlist = evsel_list;
2166 perf_stat.session = session;
2167 perf_stat.record = true;
2168 return argc;
2169 }
2170
2171 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
2172 union perf_event *event,
2173 struct perf_session *session)
2174 {
2175 struct stat_round_event *stat_round = &event->stat_round;
2176 struct perf_evsel *counter;
2177 struct timespec tsh, *ts = NULL;
2178 const char **argv = session->header.env.cmdline_argv;
2179 int argc = session->header.env.nr_cmdline;
2180
2181 evlist__for_each_entry(evsel_list, counter)
2182 perf_stat_process_counter(&stat_config, counter);
2183
2184 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2185 update_stats(&walltime_nsecs_stats, stat_round->time);
2186
2187 if (stat_config.interval && stat_round->time) {
2188 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2189 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2190 ts = &tsh;
2191 }
2192
2193 print_counters(ts, argc, argv);
2194 return 0;
2195 }
2196
2197 static
2198 int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2199 union perf_event *event,
2200 struct perf_session *session __maybe_unused)
2201 {
2202 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2203
2204 perf_event__read_stat_config(&stat_config, &event->stat_config);
2205
2206 if (cpu_map__empty(st->cpus)) {
2207 if (st->aggr_mode != AGGR_UNSET)
2208 pr_warning("warning: processing task data, aggregation mode not set\n");
2209 return 0;
2210 }
2211
2212 if (st->aggr_mode != AGGR_UNSET)
2213 stat_config.aggr_mode = st->aggr_mode;
2214
2215 if (perf_stat.file.is_pipe)
2216 perf_stat_init_aggr_mode();
2217 else
2218 perf_stat_init_aggr_mode_file(st);
2219
2220 return 0;
2221 }
2222
2223 static int set_maps(struct perf_stat *st)
2224 {
2225 if (!st->cpus || !st->threads)
2226 return 0;
2227
2228 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2229 return -EINVAL;
2230
2231 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2232
2233 if (perf_evlist__alloc_stats(evsel_list, true))
2234 return -ENOMEM;
2235
2236 st->maps_allocated = true;
2237 return 0;
2238 }
2239
2240 static
2241 int process_thread_map_event(struct perf_tool *tool __maybe_unused,
2242 union perf_event *event,
2243 struct perf_session *session __maybe_unused)
2244 {
2245 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2246
2247 if (st->threads) {
2248 pr_warning("Extra thread map event, ignoring.\n");
2249 return 0;
2250 }
2251
2252 st->threads = thread_map__new_event(&event->thread_map);
2253 if (!st->threads)
2254 return -ENOMEM;
2255
2256 return set_maps(st);
2257 }
2258
2259 static
2260 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2261 union perf_event *event,
2262 struct perf_session *session __maybe_unused)
2263 {
2264 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2265 struct cpu_map *cpus;
2266
2267 if (st->cpus) {
2268 pr_warning("Extra cpu map event, ignoring.\n");
2269 return 0;
2270 }
2271
2272 cpus = cpu_map__new_data(&event->cpu_map.data);
2273 if (!cpus)
2274 return -ENOMEM;
2275
2276 st->cpus = cpus;
2277 return set_maps(st);
2278 }
2279
2280 static const char * const stat_report_usage[] = {
2281 "perf stat report [<options>]",
2282 NULL,
2283 };
2284
2285 static struct perf_stat perf_stat = {
2286 .tool = {
2287 .attr = perf_event__process_attr,
2288 .event_update = perf_event__process_event_update,
2289 .thread_map = process_thread_map_event,
2290 .cpu_map = process_cpu_map_event,
2291 .stat_config = process_stat_config_event,
2292 .stat = perf_event__process_stat_event,
2293 .stat_round = process_stat_round_event,
2294 },
2295 .aggr_mode = AGGR_UNSET,
2296 };
2297
2298 static int __cmd_report(int argc, const char **argv)
2299 {
2300 struct perf_session *session;
2301 const struct option options[] = {
2302 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2303 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2304 "aggregate counts per processor socket", AGGR_SOCKET),
2305 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2306 "aggregate counts per physical processor core", AGGR_CORE),
2307 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2308 "disable CPU count aggregation", AGGR_NONE),
2309 OPT_END()
2310 };
2311 struct stat st;
2312 int ret;
2313
2314 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2315
2316 if (!input_name || !strlen(input_name)) {
2317 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2318 input_name = "-";
2319 else
2320 input_name = "perf.data";
2321 }
2322
2323 perf_stat.file.path = input_name;
2324 perf_stat.file.mode = PERF_DATA_MODE_READ;
2325
2326 session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2327 if (session == NULL)
2328 return -1;
2329
2330 perf_stat.session = session;
2331 stat_config.output = stderr;
2332 evsel_list = session->evlist;
2333
2334 ret = perf_session__process_events(session);
2335 if (ret)
2336 return ret;
2337
2338 perf_session__delete(session);
2339 return 0;
2340 }
2341
2342 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
2343 {
2344 const char * const stat_usage[] = {
2345 "perf stat [<options>] [<command>]",
2346 NULL
2347 };
2348 int status = -EINVAL, run_idx;
2349 const char *mode;
2350 FILE *output = stderr;
2351 unsigned int interval;
2352 const char * const stat_subcommands[] = { "record", "report" };
2353
2354 setlocale(LC_ALL, "");
2355
2356 evsel_list = perf_evlist__new();
2357 if (evsel_list == NULL)
2358 return -ENOMEM;
2359
2360 parse_events__shrink_config_terms();
2361 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2362 (const char **) stat_usage,
2363 PARSE_OPT_STOP_AT_NON_OPTION);
2364 perf_stat__init_shadow_stats();
2365
2366 if (csv_sep) {
2367 csv_output = true;
2368 if (!strcmp(csv_sep, "\\t"))
2369 csv_sep = "\t";
2370 } else
2371 csv_sep = DEFAULT_SEPARATOR;
2372
2373 if (argc && !strncmp(argv[0], "rec", 3)) {
2374 argc = __cmd_record(argc, argv);
2375 if (argc < 0)
2376 return -1;
2377 } else if (argc && !strncmp(argv[0], "rep", 3))
2378 return __cmd_report(argc, argv);
2379
2380 interval = stat_config.interval;
2381
2382 /*
2383 * For record command the -o is already taken care of.
2384 */
2385 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2386 output = NULL;
2387
2388 if (output_name && output_fd) {
2389 fprintf(stderr, "cannot use both --output and --log-fd\n");
2390 parse_options_usage(stat_usage, stat_options, "o", 1);
2391 parse_options_usage(NULL, stat_options, "log-fd", 0);
2392 goto out;
2393 }
2394
2395 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2396 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2397 goto out;
2398 }
2399
2400 if (metric_only && run_count > 1) {
2401 fprintf(stderr, "--metric-only is not supported with -r\n");
2402 goto out;
2403 }
2404
2405 if (output_fd < 0) {
2406 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2407 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2408 goto out;
2409 }
2410
2411 if (!output) {
2412 struct timespec tm;
2413 mode = append_file ? "a" : "w";
2414
2415 output = fopen(output_name, mode);
2416 if (!output) {
2417 perror("failed to create output file");
2418 return -1;
2419 }
2420 clock_gettime(CLOCK_REALTIME, &tm);
2421 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2422 } else if (output_fd > 0) {
2423 mode = append_file ? "a" : "w";
2424 output = fdopen(output_fd, mode);
2425 if (!output) {
2426 perror("Failed opening logfd");
2427 return -errno;
2428 }
2429 }
2430
2431 stat_config.output = output;
2432
2433 /*
2434 * let the spreadsheet do the pretty-printing
2435 */
2436 if (csv_output) {
2437 /* User explicitly passed -B? */
2438 if (big_num_opt == 1) {
2439 fprintf(stderr, "-B option not supported with -x\n");
2440 parse_options_usage(stat_usage, stat_options, "B", 1);
2441 parse_options_usage(NULL, stat_options, "x", 1);
2442 goto out;
2443 } else /* Nope, so disable big number formatting */
2444 big_num = false;
2445 } else if (big_num_opt == 0) /* User passed --no-big-num */
2446 big_num = false;
2447
2448 if (!argc && target__none(&target))
2449 usage_with_options(stat_usage, stat_options);
2450
2451 if (run_count < 0) {
2452 pr_err("Run count must be a positive number\n");
2453 parse_options_usage(stat_usage, stat_options, "r", 1);
2454 goto out;
2455 } else if (run_count == 0) {
2456 forever = true;
2457 run_count = 1;
2458 }
2459
2460 if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2461 fprintf(stderr, "The --per-thread option is only available "
2462 "when monitoring via -p -t options.\n");
2463 parse_options_usage(NULL, stat_options, "p", 1);
2464 parse_options_usage(NULL, stat_options, "t", 1);
2465 goto out;
2466 }
2467
2468 /*
2469 * no_aggr, cgroup are for system-wide only
2470 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2471 */
2472 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2473 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2474 !target__has_cpu(&target)) {
2475 fprintf(stderr, "both cgroup and no-aggregation "
2476 "modes only available in system-wide mode\n");
2477
2478 parse_options_usage(stat_usage, stat_options, "G", 1);
2479 parse_options_usage(NULL, stat_options, "A", 1);
2480 parse_options_usage(NULL, stat_options, "a", 1);
2481 goto out;
2482 }
2483
2484 if (add_default_attributes())
2485 goto out;
2486
2487 target__validate(&target);
2488
2489 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2490 if (target__has_task(&target)) {
2491 pr_err("Problems finding threads of monitor\n");
2492 parse_options_usage(stat_usage, stat_options, "p", 1);
2493 parse_options_usage(NULL, stat_options, "t", 1);
2494 } else if (target__has_cpu(&target)) {
2495 perror("failed to parse CPUs map");
2496 parse_options_usage(stat_usage, stat_options, "C", 1);
2497 parse_options_usage(NULL, stat_options, "a", 1);
2498 }
2499 goto out;
2500 }
2501
2502 /*
2503 * Initialize thread_map with comm names,
2504 * so we could print it out on output.
2505 */
2506 if (stat_config.aggr_mode == AGGR_THREAD)
2507 thread_map__read_comms(evsel_list->threads);
2508
2509 if (interval && interval < 100) {
2510 if (interval < 10) {
2511 pr_err("print interval must be >= 10ms\n");
2512 parse_options_usage(stat_usage, stat_options, "I", 1);
2513 goto out;
2514 } else
2515 pr_warning("print interval < 100ms. "
2516 "The overhead percentage could be high in some cases. "
2517 "Please proceed with caution.\n");
2518 }
2519
2520 if (perf_evlist__alloc_stats(evsel_list, interval))
2521 goto out;
2522
2523 if (perf_stat_init_aggr_mode())
2524 goto out;
2525
2526 /*
2527 * We dont want to block the signals - that would cause
2528 * child tasks to inherit that and Ctrl-C would not work.
2529 * What we want is for Ctrl-C to work in the exec()-ed
2530 * task, but being ignored by perf stat itself:
2531 */
2532 atexit(sig_atexit);
2533 if (!forever)
2534 signal(SIGINT, skip_signal);
2535 signal(SIGCHLD, skip_signal);
2536 signal(SIGALRM, skip_signal);
2537 signal(SIGABRT, skip_signal);
2538
2539 status = 0;
2540 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2541 if (run_count != 1 && verbose)
2542 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2543 run_idx + 1);
2544
2545 status = run_perf_stat(argc, argv);
2546 if (forever && status != -1) {
2547 print_counters(NULL, argc, argv);
2548 perf_stat__reset_stats();
2549 }
2550 }
2551
2552 if (!forever && status != -1 && !interval)
2553 print_counters(NULL, argc, argv);
2554
2555 if (STAT_RECORD) {
2556 /*
2557 * We synthesize the kernel mmap record just so that older tools
2558 * don't emit warnings about not being able to resolve symbols
2559 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2560 * a saner message about no samples being in the perf.data file.
2561 *
2562 * This also serves to suppress a warning about f_header.data.size == 0
2563 * in header.c at the moment 'perf stat record' gets introduced, which
2564 * is not really needed once we start adding the stat specific PERF_RECORD_
2565 * records, but the need to suppress the kptr_restrict messages in older
2566 * tools remain -acme
2567 */
2568 int fd = perf_data_file__fd(&perf_stat.file);
2569 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2570 process_synthesized_event,
2571 &perf_stat.session->machines.host);
2572 if (err) {
2573 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2574 "older tools may produce warnings about this file\n.");
2575 }
2576
2577 if (!interval) {
2578 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2579 pr_err("failed to write stat round event\n");
2580 }
2581
2582 if (!perf_stat.file.is_pipe) {
2583 perf_stat.session->header.data_size += perf_stat.bytes_written;
2584 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2585 }
2586
2587 perf_session__delete(perf_stat.session);
2588 }
2589
2590 perf_stat__exit_aggr_mode();
2591 perf_evlist__free_stats(evsel_list);
2592 out:
2593 perf_evlist__delete(evsel_list);
2594 return status;
2595 }
Linux with added FPC-III support