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net/mlx5: Align sriov/eswitch modules with the new load/unload flow.
[linux/fpc-iii.git] / tools / perf / builtin-stat.c
blob3c7452b39f57649b05d675db3d19395fb765df2d
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/group.h"
63 #include "util/session.h"
64 #include "util/tool.h"
65 #include "util/group.h"
66 #include "asm/bug.h"
67
68 #include <api/fs/fs.h>
69 #include <stdlib.h>
70 #include <sys/prctl.h>
71 #include <locale.h>
72 #include <math.h>
73
74 #define DEFAULT_SEPARATOR " "
75 #define CNTR_NOT_SUPPORTED "<not supported>"
76 #define CNTR_NOT_COUNTED "<not counted>"
77
78 static void print_counters(struct timespec *ts, int argc, const char **argv);
79
80 /* Default events used for perf stat -T */
81 static const char *transaction_attrs = {
82 "task-clock,"
83 "{"
84 "instructions,"
85 "cycles,"
86 "cpu/cycles-t/,"
87 "cpu/tx-start/,"
88 "cpu/el-start/,"
89 "cpu/cycles-ct/"
90 "}"
91 };
92
93 /* More limited version when the CPU does not have all events. */
94 static const char * transaction_limited_attrs = {
95 "task-clock,"
96 "{"
97 "instructions,"
98 "cycles,"
99 "cpu/cycles-t/,"
100 "cpu/tx-start/"
101 "}"
102 };
103
104 static const char * topdown_attrs[] = {
105 "topdown-total-slots",
106 "topdown-slots-retired",
107 "topdown-recovery-bubbles",
108 "topdown-fetch-bubbles",
109 "topdown-slots-issued",
110 NULL,
111 };
112
113 static struct perf_evlist *evsel_list;
114
115 static struct target target = {
116 .uid = UINT_MAX,
117 };
118
119 typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
120
121 static int run_count = 1;
122 static bool no_inherit = false;
123 static volatile pid_t child_pid = -1;
124 static bool null_run = false;
125 static int detailed_run = 0;
126 static bool transaction_run;
127 static bool topdown_run = false;
128 static bool big_num = true;
129 static int big_num_opt = -1;
130 static const char *csv_sep = NULL;
131 static bool csv_output = false;
132 static bool group = false;
133 static const char *pre_cmd = NULL;
134 static const char *post_cmd = NULL;
135 static bool sync_run = false;
136 static unsigned int initial_delay = 0;
137 static unsigned int unit_width = 4; /* strlen("unit") */
138 static bool forever = false;
139 static bool metric_only = false;
140 static bool force_metric_only = false;
141 static struct timespec ref_time;
142 static struct cpu_map *aggr_map;
143 static aggr_get_id_t aggr_get_id;
144 static bool append_file;
145 static const char *output_name;
146 static int output_fd;
147
148 struct perf_stat {
149 bool record;
150 struct perf_data_file file;
151 struct perf_session *session;
152 u64 bytes_written;
153 struct perf_tool tool;
154 bool maps_allocated;
155 struct cpu_map *cpus;
156 struct thread_map *threads;
157 enum aggr_mode aggr_mode;
158 };
159
160 static struct perf_stat perf_stat;
161 #define STAT_RECORD perf_stat.record
162
163 static volatile int done = 0;
164
165 static struct perf_stat_config stat_config = {
166 .aggr_mode = AGGR_GLOBAL,
167 .scale = true,
168 };
169
170 static inline void diff_timespec(struct timespec *r, struct timespec *a,
171 struct timespec *b)
172 {
173 r->tv_sec = a->tv_sec - b->tv_sec;
174 if (a->tv_nsec < b->tv_nsec) {
175 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
176 r->tv_sec--;
177 } else {
178 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
179 }
180 }
181
182 static void perf_stat__reset_stats(void)
183 {
184 perf_evlist__reset_stats(evsel_list);
185 perf_stat__reset_shadow_stats();
186 }
187
188 static int create_perf_stat_counter(struct perf_evsel *evsel)
189 {
190 struct perf_event_attr *attr = &evsel->attr;
191
192 if (stat_config.scale)
193 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
194 PERF_FORMAT_TOTAL_TIME_RUNNING;
195
196 attr->inherit = !no_inherit;
197
198 /*
199 * Some events get initialized with sample_(period/type) set,
200 * like tracepoints. Clear it up for counting.
201 */
202 attr->sample_period = 0;
203
204 /*
205 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
206 * while avoiding that older tools show confusing messages.
207 *
208 * However for pipe sessions we need to keep it zero,
209 * because script's perf_evsel__check_attr is triggered
210 * by attr->sample_type != 0, and we can't run it on
211 * stat sessions.
212 */
213 if (!(STAT_RECORD && perf_stat.file.is_pipe))
214 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
215
216 /*
217 * Disabling all counters initially, they will be enabled
218 * either manually by us or by kernel via enable_on_exec
219 * set later.
220 */
221 if (perf_evsel__is_group_leader(evsel)) {
222 attr->disabled = 1;
223
224 /*
225 * In case of initial_delay we enable tracee
226 * events manually.
227 */
228 if (target__none(&target) && !initial_delay)
229 attr->enable_on_exec = 1;
230 }
231
232 if (target__has_cpu(&target))
233 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
234
235 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
236 }
237
238 /*
239 * Does the counter have nsecs as a unit?
240 */
241 static inline int nsec_counter(struct perf_evsel *evsel)
242 {
243 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
244 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
245 return 1;
246
247 return 0;
248 }
249
250 static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
251 union perf_event *event,
252 struct perf_sample *sample __maybe_unused,
253 struct machine *machine __maybe_unused)
254 {
255 if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
256 pr_err("failed to write perf data, error: %m\n");
257 return -1;
258 }
259
260 perf_stat.bytes_written += event->header.size;
261 return 0;
262 }
263
264 static int write_stat_round_event(u64 tm, u64 type)
265 {
266 return perf_event__synthesize_stat_round(NULL, tm, type,
267 process_synthesized_event,
268 NULL);
269 }
270
271 #define WRITE_STAT_ROUND_EVENT(time, interval) \
272 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
273
274 #define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
275
276 static int
277 perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
278 struct perf_counts_values *count)
279 {
280 struct perf_sample_id *sid = SID(counter, cpu, thread);
281
282 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
283 process_synthesized_event, NULL);
284 }
285
286 /*
287 * Read out the results of a single counter:
288 * do not aggregate counts across CPUs in system-wide mode
289 */
290 static int read_counter(struct perf_evsel *counter)
291 {
292 int nthreads = thread_map__nr(evsel_list->threads);
293 int ncpus, cpu, thread;
294
295 if (target__has_cpu(&target))
296 ncpus = perf_evsel__nr_cpus(counter);
297 else
298 ncpus = 1;
299
300 if (!counter->supported)
301 return -ENOENT;
302
303 if (counter->system_wide)
304 nthreads = 1;
305
306 for (thread = 0; thread < nthreads; thread++) {
307 for (cpu = 0; cpu < ncpus; cpu++) {
308 struct perf_counts_values *count;
309
310 count = perf_counts(counter->counts, cpu, thread);
311 if (perf_evsel__read(counter, cpu, thread, count))
312 return -1;
313
314 if (STAT_RECORD) {
315 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
316 pr_err("failed to write stat event\n");
317 return -1;
318 }
319 }
320
321 if (verbose > 1) {
322 fprintf(stat_config.output,
323 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
324 perf_evsel__name(counter),
325 cpu,
326 count->val, count->ena, count->run);
327 }
328 }
329 }
330
331 return 0;
332 }
333
334 static void read_counters(void)
335 {
336 struct perf_evsel *counter;
337
338 evlist__for_each_entry(evsel_list, counter) {
339 if (read_counter(counter))
340 pr_debug("failed to read counter %s\n", counter->name);
341
342 if (perf_stat_process_counter(&stat_config, counter))
343 pr_warning("failed to process counter %s\n", counter->name);
344 }
345 }
346
347 static void process_interval(void)
348 {
349 struct timespec ts, rs;
350
351 read_counters();
352
353 clock_gettime(CLOCK_MONOTONIC, &ts);
354 diff_timespec(&rs, &ts, &ref_time);
355
356 if (STAT_RECORD) {
357 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL))
358 pr_err("failed to write stat round event\n");
359 }
360
361 print_counters(&rs, 0, NULL);
362 }
363
364 static void enable_counters(void)
365 {
366 if (initial_delay)
367 usleep(initial_delay * 1000);
368
369 /*
370 * We need to enable counters only if:
371 * - we don't have tracee (attaching to task or cpu)
372 * - we have initial delay configured
373 */
374 if (!target__none(&target) || initial_delay)
375 perf_evlist__enable(evsel_list);
376 }
377
378 static void disable_counters(void)
379 {
380 /*
381 * If we don't have tracee (attaching to task or cpu), counters may
382 * still be running. To get accurate group ratios, we must stop groups
383 * from counting before reading their constituent counters.
384 */
385 if (!target__none(&target))
386 perf_evlist__disable(evsel_list);
387 }
388
389 static volatile int workload_exec_errno;
390
391 /*
392 * perf_evlist__prepare_workload will send a SIGUSR1
393 * if the fork fails, since we asked by setting its
394 * want_signal to true.
395 */
396 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
397 void *ucontext __maybe_unused)
398 {
399 workload_exec_errno = info->si_value.sival_int;
400 }
401
402 static bool has_unit(struct perf_evsel *counter)
403 {
404 return counter->unit && *counter->unit;
405 }
406
407 static bool has_scale(struct perf_evsel *counter)
408 {
409 return counter->scale != 1;
410 }
411
412 static int perf_stat_synthesize_config(bool is_pipe)
413 {
414 struct perf_evsel *counter;
415 int err;
416
417 if (is_pipe) {
418 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
419 process_synthesized_event);
420 if (err < 0) {
421 pr_err("Couldn't synthesize attrs.\n");
422 return err;
423 }
424 }
425
426 /*
427 * Synthesize other events stuff not carried within
428 * attr event - unit, scale, name
429 */
430 evlist__for_each_entry(evsel_list, counter) {
431 if (!counter->supported)
432 continue;
433
434 /*
435 * Synthesize unit and scale only if it's defined.
436 */
437 if (has_unit(counter)) {
438 err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
439 if (err < 0) {
440 pr_err("Couldn't synthesize evsel unit.\n");
441 return err;
442 }
443 }
444
445 if (has_scale(counter)) {
446 err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
447 if (err < 0) {
448 pr_err("Couldn't synthesize evsel scale.\n");
449 return err;
450 }
451 }
452
453 if (counter->own_cpus) {
454 err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
455 if (err < 0) {
456 pr_err("Couldn't synthesize evsel scale.\n");
457 return err;
458 }
459 }
460
461 /*
462 * Name is needed only for pipe output,
463 * perf.data carries event names.
464 */
465 if (is_pipe) {
466 err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
467 if (err < 0) {
468 pr_err("Couldn't synthesize evsel name.\n");
469 return err;
470 }
471 }
472 }
473
474 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
475 process_synthesized_event,
476 NULL);
477 if (err < 0) {
478 pr_err("Couldn't synthesize thread map.\n");
479 return err;
480 }
481
482 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
483 process_synthesized_event, NULL);
484 if (err < 0) {
485 pr_err("Couldn't synthesize thread map.\n");
486 return err;
487 }
488
489 err = perf_event__synthesize_stat_config(NULL, &stat_config,
490 process_synthesized_event, NULL);
491 if (err < 0) {
492 pr_err("Couldn't synthesize config.\n");
493 return err;
494 }
495
496 return 0;
497 }
498
499 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
500
501 static int __store_counter_ids(struct perf_evsel *counter,
502 struct cpu_map *cpus,
503 struct thread_map *threads)
504 {
505 int cpu, thread;
506
507 for (cpu = 0; cpu < cpus->nr; cpu++) {
508 for (thread = 0; thread < threads->nr; thread++) {
509 int fd = FD(counter, cpu, thread);
510
511 if (perf_evlist__id_add_fd(evsel_list, counter,
512 cpu, thread, fd) < 0)
513 return -1;
514 }
515 }
516
517 return 0;
518 }
519
520 static int store_counter_ids(struct perf_evsel *counter)
521 {
522 struct cpu_map *cpus = counter->cpus;
523 struct thread_map *threads = counter->threads;
524
525 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
526 return -ENOMEM;
527
528 return __store_counter_ids(counter, cpus, threads);
529 }
530
531 static int __run_perf_stat(int argc, const char **argv)
532 {
533 int interval = stat_config.interval;
534 char msg[512];
535 unsigned long long t0, t1;
536 struct perf_evsel *counter;
537 struct timespec ts;
538 size_t l;
539 int status = 0;
540 const bool forks = (argc > 0);
541 bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
542
543 if (interval) {
544 ts.tv_sec = interval / 1000;
545 ts.tv_nsec = (interval % 1000) * 1000000;
546 } else {
547 ts.tv_sec = 1;
548 ts.tv_nsec = 0;
549 }
550
551 if (forks) {
552 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
553 workload_exec_failed_signal) < 0) {
554 perror("failed to prepare workload");
555 return -1;
556 }
557 child_pid = evsel_list->workload.pid;
558 }
559
560 if (group)
561 perf_evlist__set_leader(evsel_list);
562
563 evlist__for_each_entry(evsel_list, counter) {
564 try_again:
565 if (create_perf_stat_counter(counter) < 0) {
566 /*
567 * PPC returns ENXIO for HW counters until 2.6.37
568 * (behavior changed with commit b0a873e).
569 */
570 if (errno == EINVAL || errno == ENOSYS ||
571 errno == ENOENT || errno == EOPNOTSUPP ||
572 errno == ENXIO) {
573 if (verbose)
574 ui__warning("%s event is not supported by the kernel.\n",
575 perf_evsel__name(counter));
576 counter->supported = false;
577
578 if ((counter->leader != counter) ||
579 !(counter->leader->nr_members > 1))
580 continue;
581 } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
582 if (verbose)
583 ui__warning("%s\n", msg);
584 goto try_again;
585 }
586
587 perf_evsel__open_strerror(counter, &target,
588 errno, msg, sizeof(msg));
589 ui__error("%s\n", msg);
590
591 if (child_pid != -1)
592 kill(child_pid, SIGTERM);
593
594 return -1;
595 }
596 counter->supported = true;
597
598 l = strlen(counter->unit);
599 if (l > unit_width)
600 unit_width = l;
601
602 if (STAT_RECORD && store_counter_ids(counter))
603 return -1;
604 }
605
606 if (perf_evlist__apply_filters(evsel_list, &counter)) {
607 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
608 counter->filter, perf_evsel__name(counter), errno,
609 str_error_r(errno, msg, sizeof(msg)));
610 return -1;
611 }
612
613 if (STAT_RECORD) {
614 int err, fd = perf_data_file__fd(&perf_stat.file);
615
616 if (is_pipe) {
617 err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
618 } else {
619 err = perf_session__write_header(perf_stat.session, evsel_list,
620 fd, false);
621 }
622
623 if (err < 0)
624 return err;
625
626 err = perf_stat_synthesize_config(is_pipe);
627 if (err < 0)
628 return err;
629 }
630
631 /*
632 * Enable counters and exec the command:
633 */
634 t0 = rdclock();
635 clock_gettime(CLOCK_MONOTONIC, &ref_time);
636
637 if (forks) {
638 perf_evlist__start_workload(evsel_list);
639 enable_counters();
640
641 if (interval) {
642 while (!waitpid(child_pid, &status, WNOHANG)) {
643 nanosleep(&ts, NULL);
644 process_interval();
645 }
646 }
647 wait(&status);
648
649 if (workload_exec_errno) {
650 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
651 pr_err("Workload failed: %s\n", emsg);
652 return -1;
653 }
654
655 if (WIFSIGNALED(status))
656 psignal(WTERMSIG(status), argv[0]);
657 } else {
658 enable_counters();
659 while (!done) {
660 nanosleep(&ts, NULL);
661 if (interval)
662 process_interval();
663 }
664 }
665
666 disable_counters();
667
668 t1 = rdclock();
669
670 update_stats(&walltime_nsecs_stats, t1 - t0);
671
672 /*
673 * Closing a group leader splits the group, and as we only disable
674 * group leaders, results in remaining events becoming enabled. To
675 * avoid arbitrary skew, we must read all counters before closing any
676 * group leaders.
677 */
678 read_counters();
679 perf_evlist__close(evsel_list);
680
681 return WEXITSTATUS(status);
682 }
683
684 static int run_perf_stat(int argc, const char **argv)
685 {
686 int ret;
687
688 if (pre_cmd) {
689 ret = system(pre_cmd);
690 if (ret)
691 return ret;
692 }
693
694 if (sync_run)
695 sync();
696
697 ret = __run_perf_stat(argc, argv);
698 if (ret)
699 return ret;
700
701 if (post_cmd) {
702 ret = system(post_cmd);
703 if (ret)
704 return ret;
705 }
706
707 return ret;
708 }
709
710 static void print_running(u64 run, u64 ena)
711 {
712 if (csv_output) {
713 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
714 csv_sep,
715 run,
716 csv_sep,
717 ena ? 100.0 * run / ena : 100.0);
718 } else if (run != ena) {
719 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
720 }
721 }
722
723 static void print_noise_pct(double total, double avg)
724 {
725 double pct = rel_stddev_stats(total, avg);
726
727 if (csv_output)
728 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
729 else if (pct)
730 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
731 }
732
733 static void print_noise(struct perf_evsel *evsel, double avg)
734 {
735 struct perf_stat_evsel *ps;
736
737 if (run_count == 1)
738 return;
739
740 ps = evsel->priv;
741 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
742 }
743
744 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
745 {
746 switch (stat_config.aggr_mode) {
747 case AGGR_CORE:
748 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
749 cpu_map__id_to_socket(id),
750 csv_output ? 0 : -8,
751 cpu_map__id_to_cpu(id),
752 csv_sep,
753 csv_output ? 0 : 4,
754 nr,
755 csv_sep);
756 break;
757 case AGGR_SOCKET:
758 fprintf(stat_config.output, "S%*d%s%*d%s",
759 csv_output ? 0 : -5,
760 id,
761 csv_sep,
762 csv_output ? 0 : 4,
763 nr,
764 csv_sep);
765 break;
766 case AGGR_NONE:
767 fprintf(stat_config.output, "CPU%*d%s",
768 csv_output ? 0 : -4,
769 perf_evsel__cpus(evsel)->map[id], csv_sep);
770 break;
771 case AGGR_THREAD:
772 fprintf(stat_config.output, "%*s-%*d%s",
773 csv_output ? 0 : 16,
774 thread_map__comm(evsel->threads, id),
775 csv_output ? 0 : -8,
776 thread_map__pid(evsel->threads, id),
777 csv_sep);
778 break;
779 case AGGR_GLOBAL:
780 case AGGR_UNSET:
781 default:
782 break;
783 }
784 }
785
786 struct outstate {
787 FILE *fh;
788 bool newline;
789 const char *prefix;
790 int nfields;
791 int id, nr;
792 struct perf_evsel *evsel;
793 };
794
795 #define METRIC_LEN 35
796
797 static void new_line_std(void *ctx)
798 {
799 struct outstate *os = ctx;
800
801 os->newline = true;
802 }
803
804 static void do_new_line_std(struct outstate *os)
805 {
806 fputc('\n', os->fh);
807 fputs(os->prefix, os->fh);
808 aggr_printout(os->evsel, os->id, os->nr);
809 if (stat_config.aggr_mode == AGGR_NONE)
810 fprintf(os->fh, " ");
811 fprintf(os->fh, " ");
812 }
813
814 static void print_metric_std(void *ctx, const char *color, const char *fmt,
815 const char *unit, double val)
816 {
817 struct outstate *os = ctx;
818 FILE *out = os->fh;
819 int n;
820 bool newline = os->newline;
821
822 os->newline = false;
823
824 if (unit == NULL || fmt == NULL) {
825 fprintf(out, "%-*s", METRIC_LEN, "");
826 return;
827 }
828
829 if (newline)
830 do_new_line_std(os);
831
832 n = fprintf(out, " # ");
833 if (color)
834 n += color_fprintf(out, color, fmt, val);
835 else
836 n += fprintf(out, fmt, val);
837 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
838 }
839
840 static void new_line_csv(void *ctx)
841 {
842 struct outstate *os = ctx;
843 int i;
844
845 fputc('\n', os->fh);
846 if (os->prefix)
847 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
848 aggr_printout(os->evsel, os->id, os->nr);
849 for (i = 0; i < os->nfields; i++)
850 fputs(csv_sep, os->fh);
851 }
852
853 static void print_metric_csv(void *ctx,
854 const char *color __maybe_unused,
855 const char *fmt, const char *unit, double val)
856 {
857 struct outstate *os = ctx;
858 FILE *out = os->fh;
859 char buf[64], *vals, *ends;
860
861 if (unit == NULL || fmt == NULL) {
862 fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
863 return;
864 }
865 snprintf(buf, sizeof(buf), fmt, val);
866 vals = buf;
867 while (isspace(*vals))
868 vals++;
869 ends = vals;
870 while (isdigit(*ends) || *ends == '.')
871 ends++;
872 *ends = 0;
873 while (isspace(*unit))
874 unit++;
875 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
876 }
877
878 #define METRIC_ONLY_LEN 20
879
880 /* Filter out some columns that don't work well in metrics only mode */
881
882 static bool valid_only_metric(const char *unit)
883 {
884 if (!unit)
885 return false;
886 if (strstr(unit, "/sec") ||
887 strstr(unit, "hz") ||
888 strstr(unit, "Hz") ||
889 strstr(unit, "CPUs utilized"))
890 return false;
891 return true;
892 }
893
894 static const char *fixunit(char *buf, struct perf_evsel *evsel,
895 const char *unit)
896 {
897 if (!strncmp(unit, "of all", 6)) {
898 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
899 unit);
900 return buf;
901 }
902 return unit;
903 }
904
905 static void print_metric_only(void *ctx, const char *color, const char *fmt,
906 const char *unit, double val)
907 {
908 struct outstate *os = ctx;
909 FILE *out = os->fh;
910 int n;
911 char buf[1024];
912 unsigned mlen = METRIC_ONLY_LEN;
913
914 if (!valid_only_metric(unit))
915 return;
916 unit = fixunit(buf, os->evsel, unit);
917 if (color)
918 n = color_fprintf(out, color, fmt, val);
919 else
920 n = fprintf(out, fmt, val);
921 if (n > METRIC_ONLY_LEN)
922 n = METRIC_ONLY_LEN;
923 if (mlen < strlen(unit))
924 mlen = strlen(unit) + 1;
925 fprintf(out, "%*s", mlen - n, "");
926 }
927
928 static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
929 const char *fmt,
930 const char *unit, double val)
931 {
932 struct outstate *os = ctx;
933 FILE *out = os->fh;
934 char buf[64], *vals, *ends;
935 char tbuf[1024];
936
937 if (!valid_only_metric(unit))
938 return;
939 unit = fixunit(tbuf, os->evsel, unit);
940 snprintf(buf, sizeof buf, fmt, val);
941 vals = buf;
942 while (isspace(*vals))
943 vals++;
944 ends = vals;
945 while (isdigit(*ends) || *ends == '.')
946 ends++;
947 *ends = 0;
948 fprintf(out, "%s%s", vals, csv_sep);
949 }
950
951 static void new_line_metric(void *ctx __maybe_unused)
952 {
953 }
954
955 static void print_metric_header(void *ctx, const char *color __maybe_unused,
956 const char *fmt __maybe_unused,
957 const char *unit, double val __maybe_unused)
958 {
959 struct outstate *os = ctx;
960 char tbuf[1024];
961
962 if (!valid_only_metric(unit))
963 return;
964 unit = fixunit(tbuf, os->evsel, unit);
965 if (csv_output)
966 fprintf(os->fh, "%s%s", unit, csv_sep);
967 else
968 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
969 }
970
971 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
972 {
973 FILE *output = stat_config.output;
974 double msecs = avg / 1e6;
975 const char *fmt_v, *fmt_n;
976 char name[25];
977
978 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
979 fmt_n = csv_output ? "%s" : "%-25s";
980
981 aggr_printout(evsel, id, nr);
982
983 scnprintf(name, sizeof(name), "%s%s",
984 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
985
986 fprintf(output, fmt_v, msecs, csv_sep);
987
988 if (csv_output)
989 fprintf(output, "%s%s", evsel->unit, csv_sep);
990 else
991 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
992
993 fprintf(output, fmt_n, name);
994
995 if (evsel->cgrp)
996 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
997 }
998
999 static int first_shadow_cpu(struct perf_evsel *evsel, int id)
1000 {
1001 int i;
1002
1003 if (!aggr_get_id)
1004 return 0;
1005
1006 if (stat_config.aggr_mode == AGGR_NONE)
1007 return id;
1008
1009 if (stat_config.aggr_mode == AGGR_GLOBAL)
1010 return 0;
1011
1012 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
1013 int cpu2 = perf_evsel__cpus(evsel)->map[i];
1014
1015 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
1016 return cpu2;
1017 }
1018 return 0;
1019 }
1020
1021 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1022 {
1023 FILE *output = stat_config.output;
1024 double sc = evsel->scale;
1025 const char *fmt;
1026
1027 if (csv_output) {
1028 fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
1029 } else {
1030 if (big_num)
1031 fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
1032 else
1033 fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
1034 }
1035
1036 aggr_printout(evsel, id, nr);
1037
1038 fprintf(output, fmt, avg, csv_sep);
1039
1040 if (evsel->unit)
1041 fprintf(output, "%-*s%s",
1042 csv_output ? 0 : unit_width,
1043 evsel->unit, csv_sep);
1044
1045 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1046
1047 if (evsel->cgrp)
1048 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1049 }
1050
1051 static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1052 char *prefix, u64 run, u64 ena, double noise)
1053 {
1054 struct perf_stat_output_ctx out;
1055 struct outstate os = {
1056 .fh = stat_config.output,
1057 .prefix = prefix ? prefix : "",
1058 .id = id,
1059 .nr = nr,
1060 .evsel = counter,
1061 };
1062 print_metric_t pm = print_metric_std;
1063 void (*nl)(void *);
1064
1065 if (metric_only) {
1066 nl = new_line_metric;
1067 if (csv_output)
1068 pm = print_metric_only_csv;
1069 else
1070 pm = print_metric_only;
1071 } else
1072 nl = new_line_std;
1073
1074 if (csv_output && !metric_only) {
1075 static int aggr_fields[] = {
1076 [AGGR_GLOBAL] = 0,
1077 [AGGR_THREAD] = 1,
1078 [AGGR_NONE] = 1,
1079 [AGGR_SOCKET] = 2,
1080 [AGGR_CORE] = 2,
1081 };
1082
1083 pm = print_metric_csv;
1084 nl = new_line_csv;
1085 os.nfields = 3;
1086 os.nfields += aggr_fields[stat_config.aggr_mode];
1087 if (counter->cgrp)
1088 os.nfields++;
1089 }
1090 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1091 if (metric_only) {
1092 pm(&os, NULL, "", "", 0);
1093 return;
1094 }
1095 aggr_printout(counter, id, nr);
1096
1097 fprintf(stat_config.output, "%*s%s",
1098 csv_output ? 0 : 18,
1099 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1100 csv_sep);
1101
1102 fprintf(stat_config.output, "%-*s%s",
1103 csv_output ? 0 : unit_width,
1104 counter->unit, csv_sep);
1105
1106 fprintf(stat_config.output, "%*s",
1107 csv_output ? 0 : -25,
1108 perf_evsel__name(counter));
1109
1110 if (counter->cgrp)
1111 fprintf(stat_config.output, "%s%s",
1112 csv_sep, counter->cgrp->name);
1113
1114 if (!csv_output)
1115 pm(&os, NULL, NULL, "", 0);
1116 print_noise(counter, noise);
1117 print_running(run, ena);
1118 if (csv_output)
1119 pm(&os, NULL, NULL, "", 0);
1120 return;
1121 }
1122
1123 if (metric_only)
1124 /* nothing */;
1125 else if (nsec_counter(counter))
1126 nsec_printout(id, nr, counter, uval);
1127 else
1128 abs_printout(id, nr, counter, uval);
1129
1130 out.print_metric = pm;
1131 out.new_line = nl;
1132 out.ctx = &os;
1133
1134 if (csv_output && !metric_only) {
1135 print_noise(counter, noise);
1136 print_running(run, ena);
1137 }
1138
1139 perf_stat__print_shadow_stats(counter, uval,
1140 first_shadow_cpu(counter, id),
1141 &out);
1142 if (!csv_output && !metric_only) {
1143 print_noise(counter, noise);
1144 print_running(run, ena);
1145 }
1146 }
1147
1148 static void aggr_update_shadow(void)
1149 {
1150 int cpu, s2, id, s;
1151 u64 val;
1152 struct perf_evsel *counter;
1153
1154 for (s = 0; s < aggr_map->nr; s++) {
1155 id = aggr_map->map[s];
1156 evlist__for_each_entry(evsel_list, counter) {
1157 val = 0;
1158 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1159 s2 = aggr_get_id(evsel_list->cpus, cpu);
1160 if (s2 != id)
1161 continue;
1162 val += perf_counts(counter->counts, cpu, 0)->val;
1163 }
1164 val = val * counter->scale;
1165 perf_stat__update_shadow_stats(counter, &val,
1166 first_shadow_cpu(counter, id));
1167 }
1168 }
1169 }
1170
1171 static void print_aggr(char *prefix)
1172 {
1173 FILE *output = stat_config.output;
1174 struct perf_evsel *counter;
1175 int cpu, s, s2, id, nr;
1176 double uval;
1177 u64 ena, run, val;
1178 bool first;
1179
1180 if (!(aggr_map || aggr_get_id))
1181 return;
1182
1183 aggr_update_shadow();
1184
1185 /*
1186 * With metric_only everything is on a single line.
1187 * Without each counter has its own line.
1188 */
1189 for (s = 0; s < aggr_map->nr; s++) {
1190 if (prefix && metric_only)
1191 fprintf(output, "%s", prefix);
1192
1193 id = aggr_map->map[s];
1194 first = true;
1195 evlist__for_each_entry(evsel_list, counter) {
1196 val = ena = run = 0;
1197 nr = 0;
1198 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1199 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1200 if (s2 != id)
1201 continue;
1202 val += perf_counts(counter->counts, cpu, 0)->val;
1203 ena += perf_counts(counter->counts, cpu, 0)->ena;
1204 run += perf_counts(counter->counts, cpu, 0)->run;
1205 nr++;
1206 }
1207 if (first && metric_only) {
1208 first = false;
1209 aggr_printout(counter, id, nr);
1210 }
1211 if (prefix && !metric_only)
1212 fprintf(output, "%s", prefix);
1213
1214 uval = val * counter->scale;
1215 printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1216 if (!metric_only)
1217 fputc('\n', output);
1218 }
1219 if (metric_only)
1220 fputc('\n', output);
1221 }
1222 }
1223
1224 static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1225 {
1226 FILE *output = stat_config.output;
1227 int nthreads = thread_map__nr(counter->threads);
1228 int ncpus = cpu_map__nr(counter->cpus);
1229 int cpu, thread;
1230 double uval;
1231
1232 for (thread = 0; thread < nthreads; thread++) {
1233 u64 ena = 0, run = 0, val = 0;
1234
1235 for (cpu = 0; cpu < ncpus; cpu++) {
1236 val += perf_counts(counter->counts, cpu, thread)->val;
1237 ena += perf_counts(counter->counts, cpu, thread)->ena;
1238 run += perf_counts(counter->counts, cpu, thread)->run;
1239 }
1240
1241 if (prefix)
1242 fprintf(output, "%s", prefix);
1243
1244 uval = val * counter->scale;
1245 printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1246 fputc('\n', output);
1247 }
1248 }
1249
1250 /*
1251 * Print out the results of a single counter:
1252 * aggregated counts in system-wide mode
1253 */
1254 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1255 {
1256 FILE *output = stat_config.output;
1257 struct perf_stat_evsel *ps = counter->priv;
1258 double avg = avg_stats(&ps->res_stats[0]);
1259 double uval;
1260 double avg_enabled, avg_running;
1261
1262 avg_enabled = avg_stats(&ps->res_stats[1]);
1263 avg_running = avg_stats(&ps->res_stats[2]);
1264
1265 if (prefix && !metric_only)
1266 fprintf(output, "%s", prefix);
1267
1268 uval = avg * counter->scale;
1269 printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1270 if (!metric_only)
1271 fprintf(output, "\n");
1272 }
1273
1274 /*
1275 * Print out the results of a single counter:
1276 * does not use aggregated count in system-wide
1277 */
1278 static void print_counter(struct perf_evsel *counter, char *prefix)
1279 {
1280 FILE *output = stat_config.output;
1281 u64 ena, run, val;
1282 double uval;
1283 int cpu;
1284
1285 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1286 val = perf_counts(counter->counts, cpu, 0)->val;
1287 ena = perf_counts(counter->counts, cpu, 0)->ena;
1288 run = perf_counts(counter->counts, cpu, 0)->run;
1289
1290 if (prefix)
1291 fprintf(output, "%s", prefix);
1292
1293 uval = val * counter->scale;
1294 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1295
1296 fputc('\n', output);
1297 }
1298 }
1299
1300 static void print_no_aggr_metric(char *prefix)
1301 {
1302 int cpu;
1303 int nrcpus = 0;
1304 struct perf_evsel *counter;
1305 u64 ena, run, val;
1306 double uval;
1307
1308 nrcpus = evsel_list->cpus->nr;
1309 for (cpu = 0; cpu < nrcpus; cpu++) {
1310 bool first = true;
1311
1312 if (prefix)
1313 fputs(prefix, stat_config.output);
1314 evlist__for_each_entry(evsel_list, counter) {
1315 if (first) {
1316 aggr_printout(counter, cpu, 0);
1317 first = false;
1318 }
1319 val = perf_counts(counter->counts, cpu, 0)->val;
1320 ena = perf_counts(counter->counts, cpu, 0)->ena;
1321 run = perf_counts(counter->counts, cpu, 0)->run;
1322
1323 uval = val * counter->scale;
1324 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1325 }
1326 fputc('\n', stat_config.output);
1327 }
1328 }
1329
1330 static int aggr_header_lens[] = {
1331 [AGGR_CORE] = 18,
1332 [AGGR_SOCKET] = 12,
1333 [AGGR_NONE] = 6,
1334 [AGGR_THREAD] = 24,
1335 [AGGR_GLOBAL] = 0,
1336 };
1337
1338 static const char *aggr_header_csv[] = {
1339 [AGGR_CORE] = "core,cpus,",
1340 [AGGR_SOCKET] = "socket,cpus",
1341 [AGGR_NONE] = "cpu,",
1342 [AGGR_THREAD] = "comm-pid,",
1343 [AGGR_GLOBAL] = ""
1344 };
1345
1346 static void print_metric_headers(const char *prefix, bool no_indent)
1347 {
1348 struct perf_stat_output_ctx out;
1349 struct perf_evsel *counter;
1350 struct outstate os = {
1351 .fh = stat_config.output
1352 };
1353
1354 if (prefix)
1355 fprintf(stat_config.output, "%s", prefix);
1356
1357 if (!csv_output && !no_indent)
1358 fprintf(stat_config.output, "%*s",
1359 aggr_header_lens[stat_config.aggr_mode], "");
1360 if (csv_output) {
1361 if (stat_config.interval)
1362 fputs("time,", stat_config.output);
1363 fputs(aggr_header_csv[stat_config.aggr_mode],
1364 stat_config.output);
1365 }
1366
1367 /* Print metrics headers only */
1368 evlist__for_each_entry(evsel_list, counter) {
1369 os.evsel = counter;
1370 out.ctx = &os;
1371 out.print_metric = print_metric_header;
1372 out.new_line = new_line_metric;
1373 os.evsel = counter;
1374 perf_stat__print_shadow_stats(counter, 0,
1375 0,
1376 &out);
1377 }
1378 fputc('\n', stat_config.output);
1379 }
1380
1381 static void print_interval(char *prefix, struct timespec *ts)
1382 {
1383 FILE *output = stat_config.output;
1384 static int num_print_interval;
1385
1386 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1387
1388 if (num_print_interval == 0 && !csv_output) {
1389 switch (stat_config.aggr_mode) {
1390 case AGGR_SOCKET:
1391 fprintf(output, "# time socket cpus");
1392 if (!metric_only)
1393 fprintf(output, " counts %*s events\n", unit_width, "unit");
1394 break;
1395 case AGGR_CORE:
1396 fprintf(output, "# time core cpus");
1397 if (!metric_only)
1398 fprintf(output, " counts %*s events\n", unit_width, "unit");
1399 break;
1400 case AGGR_NONE:
1401 fprintf(output, "# time CPU");
1402 if (!metric_only)
1403 fprintf(output, " counts %*s events\n", unit_width, "unit");
1404 break;
1405 case AGGR_THREAD:
1406 fprintf(output, "# time comm-pid");
1407 if (!metric_only)
1408 fprintf(output, " counts %*s events\n", unit_width, "unit");
1409 break;
1410 case AGGR_GLOBAL:
1411 default:
1412 fprintf(output, "# time");
1413 if (!metric_only)
1414 fprintf(output, " counts %*s events\n", unit_width, "unit");
1415 case AGGR_UNSET:
1416 break;
1417 }
1418 }
1419
1420 if (num_print_interval == 0 && metric_only)
1421 print_metric_headers(" ", true);
1422 if (++num_print_interval == 25)
1423 num_print_interval = 0;
1424 }
1425
1426 static void print_header(int argc, const char **argv)
1427 {
1428 FILE *output = stat_config.output;
1429 int i;
1430
1431 fflush(stdout);
1432
1433 if (!csv_output) {
1434 fprintf(output, "\n");
1435 fprintf(output, " Performance counter stats for ");
1436 if (target.system_wide)
1437 fprintf(output, "\'system wide");
1438 else if (target.cpu_list)
1439 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1440 else if (!target__has_task(&target)) {
1441 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1442 for (i = 1; argv && (i < argc); i++)
1443 fprintf(output, " %s", argv[i]);
1444 } else if (target.pid)
1445 fprintf(output, "process id \'%s", target.pid);
1446 else
1447 fprintf(output, "thread id \'%s", target.tid);
1448
1449 fprintf(output, "\'");
1450 if (run_count > 1)
1451 fprintf(output, " (%d runs)", run_count);
1452 fprintf(output, ":\n\n");
1453 }
1454 }
1455
1456 static void print_footer(void)
1457 {
1458 FILE *output = stat_config.output;
1459
1460 if (!null_run)
1461 fprintf(output, "\n");
1462 fprintf(output, " %17.9f seconds time elapsed",
1463 avg_stats(&walltime_nsecs_stats)/1e9);
1464 if (run_count > 1) {
1465 fprintf(output, " ");
1466 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1467 avg_stats(&walltime_nsecs_stats));
1468 }
1469 fprintf(output, "\n\n");
1470 }
1471
1472 static void print_counters(struct timespec *ts, int argc, const char **argv)
1473 {
1474 int interval = stat_config.interval;
1475 struct perf_evsel *counter;
1476 char buf[64], *prefix = NULL;
1477
1478 /* Do not print anything if we record to the pipe. */
1479 if (STAT_RECORD && perf_stat.file.is_pipe)
1480 return;
1481
1482 if (interval)
1483 print_interval(prefix = buf, ts);
1484 else
1485 print_header(argc, argv);
1486
1487 if (metric_only) {
1488 static int num_print_iv;
1489
1490 if (num_print_iv == 0 && !interval)
1491 print_metric_headers(prefix, false);
1492 if (num_print_iv++ == 25)
1493 num_print_iv = 0;
1494 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1495 fprintf(stat_config.output, "%s", prefix);
1496 }
1497
1498 switch (stat_config.aggr_mode) {
1499 case AGGR_CORE:
1500 case AGGR_SOCKET:
1501 print_aggr(prefix);
1502 break;
1503 case AGGR_THREAD:
1504 evlist__for_each_entry(evsel_list, counter)
1505 print_aggr_thread(counter, prefix);
1506 break;
1507 case AGGR_GLOBAL:
1508 evlist__for_each_entry(evsel_list, counter)
1509 print_counter_aggr(counter, prefix);
1510 if (metric_only)
1511 fputc('\n', stat_config.output);
1512 break;
1513 case AGGR_NONE:
1514 if (metric_only)
1515 print_no_aggr_metric(prefix);
1516 else {
1517 evlist__for_each_entry(evsel_list, counter)
1518 print_counter(counter, prefix);
1519 }
1520 break;
1521 case AGGR_UNSET:
1522 default:
1523 break;
1524 }
1525
1526 if (!interval && !csv_output)
1527 print_footer();
1528
1529 fflush(stat_config.output);
1530 }
1531
1532 static volatile int signr = -1;
1533
1534 static void skip_signal(int signo)
1535 {
1536 if ((child_pid == -1) || stat_config.interval)
1537 done = 1;
1538
1539 signr = signo;
1540 /*
1541 * render child_pid harmless
1542 * won't send SIGTERM to a random
1543 * process in case of race condition
1544 * and fast PID recycling
1545 */
1546 child_pid = -1;
1547 }
1548
1549 static void sig_atexit(void)
1550 {
1551 sigset_t set, oset;
1552
1553 /*
1554 * avoid race condition with SIGCHLD handler
1555 * in skip_signal() which is modifying child_pid
1556 * goal is to avoid send SIGTERM to a random
1557 * process
1558 */
1559 sigemptyset(&set);
1560 sigaddset(&set, SIGCHLD);
1561 sigprocmask(SIG_BLOCK, &set, &oset);
1562
1563 if (child_pid != -1)
1564 kill(child_pid, SIGTERM);
1565
1566 sigprocmask(SIG_SETMASK, &oset, NULL);
1567
1568 if (signr == -1)
1569 return;
1570
1571 signal(signr, SIG_DFL);
1572 kill(getpid(), signr);
1573 }
1574
1575 static int stat__set_big_num(const struct option *opt __maybe_unused,
1576 const char *s __maybe_unused, int unset)
1577 {
1578 big_num_opt = unset ? 0 : 1;
1579 return 0;
1580 }
1581
1582 static int enable_metric_only(const struct option *opt __maybe_unused,
1583 const char *s __maybe_unused, int unset)
1584 {
1585 force_metric_only = true;
1586 metric_only = !unset;
1587 return 0;
1588 }
1589
1590 static const struct option stat_options[] = {
1591 OPT_BOOLEAN('T', "transaction", &transaction_run,
1592 "hardware transaction statistics"),
1593 OPT_CALLBACK('e', "event", &evsel_list, "event",
1594 "event selector. use 'perf list' to list available events",
1595 parse_events_option),
1596 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1597 "event filter", parse_filter),
1598 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1599 "child tasks do not inherit counters"),
1600 OPT_STRING('p', "pid", &target.pid, "pid",
1601 "stat events on existing process id"),
1602 OPT_STRING('t', "tid", &target.tid, "tid",
1603 "stat events on existing thread id"),
1604 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1605 "system-wide collection from all CPUs"),
1606 OPT_BOOLEAN('g', "group", &group,
1607 "put the counters into a counter group"),
1608 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1609 OPT_INCR('v', "verbose", &verbose,
1610 "be more verbose (show counter open errors, etc)"),
1611 OPT_INTEGER('r', "repeat", &run_count,
1612 "repeat command and print average + stddev (max: 100, forever: 0)"),
1613 OPT_BOOLEAN('n', "null", &null_run,
1614 "null run - dont start any counters"),
1615 OPT_INCR('d', "detailed", &detailed_run,
1616 "detailed run - start a lot of events"),
1617 OPT_BOOLEAN('S', "sync", &sync_run,
1618 "call sync() before starting a run"),
1619 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1620 "print large numbers with thousands\' separators",
1621 stat__set_big_num),
1622 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1623 "list of cpus to monitor in system-wide"),
1624 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1625 "disable CPU count aggregation", AGGR_NONE),
1626 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1627 "print counts with custom separator"),
1628 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1629 "monitor event in cgroup name only", parse_cgroups),
1630 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1631 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1632 OPT_INTEGER(0, "log-fd", &output_fd,
1633 "log output to fd, instead of stderr"),
1634 OPT_STRING(0, "pre", &pre_cmd, "command",
1635 "command to run prior to the measured command"),
1636 OPT_STRING(0, "post", &post_cmd, "command",
1637 "command to run after to the measured command"),
1638 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1639 "print counts at regular interval in ms (>= 10)"),
1640 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1641 "aggregate counts per processor socket", AGGR_SOCKET),
1642 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1643 "aggregate counts per physical processor core", AGGR_CORE),
1644 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1645 "aggregate counts per thread", AGGR_THREAD),
1646 OPT_UINTEGER('D', "delay", &initial_delay,
1647 "ms to wait before starting measurement after program start"),
1648 OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
1649 "Only print computed metrics. No raw values", enable_metric_only),
1650 OPT_BOOLEAN(0, "topdown", &topdown_run,
1651 "measure topdown level 1 statistics"),
1652 OPT_END()
1653 };
1654
1655 static int perf_stat__get_socket(struct cpu_map *map, int cpu)
1656 {
1657 return cpu_map__get_socket(map, cpu, NULL);
1658 }
1659
1660 static int perf_stat__get_core(struct cpu_map *map, int cpu)
1661 {
1662 return cpu_map__get_core(map, cpu, NULL);
1663 }
1664
1665 static int cpu_map__get_max(struct cpu_map *map)
1666 {
1667 int i, max = -1;
1668
1669 for (i = 0; i < map->nr; i++) {
1670 if (map->map[i] > max)
1671 max = map->map[i];
1672 }
1673
1674 return max;
1675 }
1676
1677 static struct cpu_map *cpus_aggr_map;
1678
1679 static int perf_stat__get_aggr(aggr_get_id_t get_id, 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 (cpus_aggr_map->map[cpu] == -1)
1689 cpus_aggr_map->map[cpu] = get_id(map, idx);
1690
1691 return cpus_aggr_map->map[cpu];
1692 }
1693
1694 static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
1695 {
1696 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1697 }
1698
1699 static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
1700 {
1701 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1702 }
1703
1704 static int perf_stat_init_aggr_mode(void)
1705 {
1706 int nr;
1707
1708 switch (stat_config.aggr_mode) {
1709 case AGGR_SOCKET:
1710 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1711 perror("cannot build socket map");
1712 return -1;
1713 }
1714 aggr_get_id = perf_stat__get_socket_cached;
1715 break;
1716 case AGGR_CORE:
1717 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1718 perror("cannot build core map");
1719 return -1;
1720 }
1721 aggr_get_id = perf_stat__get_core_cached;
1722 break;
1723 case AGGR_NONE:
1724 case AGGR_GLOBAL:
1725 case AGGR_THREAD:
1726 case AGGR_UNSET:
1727 default:
1728 break;
1729 }
1730
1731 /*
1732 * The evsel_list->cpus is the base we operate on,
1733 * taking the highest cpu number to be the size of
1734 * the aggregation translate cpumap.
1735 */
1736 nr = cpu_map__get_max(evsel_list->cpus);
1737 cpus_aggr_map = cpu_map__empty_new(nr + 1);
1738 return cpus_aggr_map ? 0 : -ENOMEM;
1739 }
1740
1741 static void perf_stat__exit_aggr_mode(void)
1742 {
1743 cpu_map__put(aggr_map);
1744 cpu_map__put(cpus_aggr_map);
1745 aggr_map = NULL;
1746 cpus_aggr_map = NULL;
1747 }
1748
1749 static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1750 {
1751 int cpu;
1752
1753 if (idx > map->nr)
1754 return -1;
1755
1756 cpu = map->map[idx];
1757
1758 if (cpu >= env->nr_cpus_online)
1759 return -1;
1760
1761 return cpu;
1762 }
1763
1764 static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1765 {
1766 struct perf_env *env = data;
1767 int cpu = perf_env__get_cpu(env, map, idx);
1768
1769 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
1770 }
1771
1772 static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1773 {
1774 struct perf_env *env = data;
1775 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1776
1777 if (cpu != -1) {
1778 int socket_id = env->cpu[cpu].socket_id;
1779
1780 /*
1781 * Encode socket in upper 16 bits
1782 * core_id is relative to socket, and
1783 * we need a global id. So we combine
1784 * socket + core id.
1785 */
1786 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
1787 }
1788
1789 return core;
1790 }
1791
1792 static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1793 struct cpu_map **sockp)
1794 {
1795 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1796 }
1797
1798 static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1799 struct cpu_map **corep)
1800 {
1801 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1802 }
1803
1804 static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
1805 {
1806 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1807 }
1808
1809 static int perf_stat__get_core_file(struct cpu_map *map, int idx)
1810 {
1811 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1812 }
1813
1814 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1815 {
1816 struct perf_env *env = &st->session->header.env;
1817
1818 switch (stat_config.aggr_mode) {
1819 case AGGR_SOCKET:
1820 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1821 perror("cannot build socket map");
1822 return -1;
1823 }
1824 aggr_get_id = perf_stat__get_socket_file;
1825 break;
1826 case AGGR_CORE:
1827 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1828 perror("cannot build core map");
1829 return -1;
1830 }
1831 aggr_get_id = perf_stat__get_core_file;
1832 break;
1833 case AGGR_NONE:
1834 case AGGR_GLOBAL:
1835 case AGGR_THREAD:
1836 case AGGR_UNSET:
1837 default:
1838 break;
1839 }
1840
1841 return 0;
1842 }
1843
1844 static int topdown_filter_events(const char **attr, char **str, bool use_group)
1845 {
1846 int off = 0;
1847 int i;
1848 int len = 0;
1849 char *s;
1850
1851 for (i = 0; attr[i]; i++) {
1852 if (pmu_have_event("cpu", attr[i])) {
1853 len += strlen(attr[i]) + 1;
1854 attr[i - off] = attr[i];
1855 } else
1856 off++;
1857 }
1858 attr[i - off] = NULL;
1859
1860 *str = malloc(len + 1 + 2);
1861 if (!*str)
1862 return -1;
1863 s = *str;
1864 if (i - off == 0) {
1865 *s = 0;
1866 return 0;
1867 }
1868 if (use_group)
1869 *s++ = '{';
1870 for (i = 0; attr[i]; i++) {
1871 strcpy(s, attr[i]);
1872 s += strlen(s);
1873 *s++ = ',';
1874 }
1875 if (use_group) {
1876 s[-1] = '}';
1877 *s = 0;
1878 } else
1879 s[-1] = 0;
1880 return 0;
1881 }
1882
1883 __weak bool arch_topdown_check_group(bool *warn)
1884 {
1885 *warn = false;
1886 return false;
1887 }
1888
1889 __weak void arch_topdown_group_warn(void)
1890 {
1891 }
1892
1893 /*
1894 * Add default attributes, if there were no attributes specified or
1895 * if -d/--detailed, -d -d or -d -d -d is used:
1896 */
1897 static int add_default_attributes(void)
1898 {
1899 int err;
1900 struct perf_event_attr default_attrs0[] = {
1901
1902 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1903 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1904 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1905 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1906
1907 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1908 };
1909 struct perf_event_attr frontend_attrs[] = {
1910 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1911 };
1912 struct perf_event_attr backend_attrs[] = {
1913 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1914 };
1915 struct perf_event_attr default_attrs1[] = {
1916 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1917 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1918 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1919
1920 };
1921
1922 /*
1923 * Detailed stats (-d), covering the L1 and last level data caches:
1924 */
1925 struct perf_event_attr detailed_attrs[] = {
1926
1927 { .type = PERF_TYPE_HW_CACHE,
1928 .config =
1929 PERF_COUNT_HW_CACHE_L1D << 0 |
1930 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1931 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1932
1933 { .type = PERF_TYPE_HW_CACHE,
1934 .config =
1935 PERF_COUNT_HW_CACHE_L1D << 0 |
1936 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1937 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1938
1939 { .type = PERF_TYPE_HW_CACHE,
1940 .config =
1941 PERF_COUNT_HW_CACHE_LL << 0 |
1942 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1943 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1944
1945 { .type = PERF_TYPE_HW_CACHE,
1946 .config =
1947 PERF_COUNT_HW_CACHE_LL << 0 |
1948 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1949 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1950 };
1951
1952 /*
1953 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1954 */
1955 struct perf_event_attr very_detailed_attrs[] = {
1956
1957 { .type = PERF_TYPE_HW_CACHE,
1958 .config =
1959 PERF_COUNT_HW_CACHE_L1I << 0 |
1960 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1961 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1962
1963 { .type = PERF_TYPE_HW_CACHE,
1964 .config =
1965 PERF_COUNT_HW_CACHE_L1I << 0 |
1966 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1967 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1968
1969 { .type = PERF_TYPE_HW_CACHE,
1970 .config =
1971 PERF_COUNT_HW_CACHE_DTLB << 0 |
1972 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1973 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1974
1975 { .type = PERF_TYPE_HW_CACHE,
1976 .config =
1977 PERF_COUNT_HW_CACHE_DTLB << 0 |
1978 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1979 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1980
1981 { .type = PERF_TYPE_HW_CACHE,
1982 .config =
1983 PERF_COUNT_HW_CACHE_ITLB << 0 |
1984 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1985 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1986
1987 { .type = PERF_TYPE_HW_CACHE,
1988 .config =
1989 PERF_COUNT_HW_CACHE_ITLB << 0 |
1990 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1991 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1992
1993 };
1994
1995 /*
1996 * Very, very detailed stats (-d -d -d), adding prefetch events:
1997 */
1998 struct perf_event_attr very_very_detailed_attrs[] = {
1999
2000 { .type = PERF_TYPE_HW_CACHE,
2001 .config =
2002 PERF_COUNT_HW_CACHE_L1D << 0 |
2003 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2004 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2005
2006 { .type = PERF_TYPE_HW_CACHE,
2007 .config =
2008 PERF_COUNT_HW_CACHE_L1D << 0 |
2009 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2010 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2011 };
2012
2013 /* Set attrs if no event is selected and !null_run: */
2014 if (null_run)
2015 return 0;
2016
2017 if (transaction_run) {
2018 if (pmu_have_event("cpu", "cycles-ct") &&
2019 pmu_have_event("cpu", "el-start"))
2020 err = parse_events(evsel_list, transaction_attrs, NULL);
2021 else
2022 err = parse_events(evsel_list, transaction_limited_attrs, NULL);
2023 if (err) {
2024 fprintf(stderr, "Cannot set up transaction events\n");
2025 return -1;
2026 }
2027 return 0;
2028 }
2029
2030 if (topdown_run) {
2031 char *str = NULL;
2032 bool warn = false;
2033
2034 if (stat_config.aggr_mode != AGGR_GLOBAL &&
2035 stat_config.aggr_mode != AGGR_CORE) {
2036 pr_err("top down event configuration requires --per-core mode\n");
2037 return -1;
2038 }
2039 stat_config.aggr_mode = AGGR_CORE;
2040 if (nr_cgroups || !target__has_cpu(&target)) {
2041 pr_err("top down event configuration requires system-wide mode (-a)\n");
2042 return -1;
2043 }
2044
2045 if (!force_metric_only)
2046 metric_only = true;
2047 if (topdown_filter_events(topdown_attrs, &str,
2048 arch_topdown_check_group(&warn)) < 0) {
2049 pr_err("Out of memory\n");
2050 return -1;
2051 }
2052 if (topdown_attrs[0] && str) {
2053 if (warn)
2054 arch_topdown_group_warn();
2055 err = parse_events(evsel_list, str, NULL);
2056 if (err) {
2057 fprintf(stderr,
2058 "Cannot set up top down events %s: %d\n",
2059 str, err);
2060 free(str);
2061 return -1;
2062 }
2063 } else {
2064 fprintf(stderr, "System does not support topdown\n");
2065 return -1;
2066 }
2067 free(str);
2068 }
2069
2070 if (!evsel_list->nr_entries) {
2071 if (target__has_cpu(&target))
2072 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
2073
2074 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2075 return -1;
2076 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
2077 if (perf_evlist__add_default_attrs(evsel_list,
2078 frontend_attrs) < 0)
2079 return -1;
2080 }
2081 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
2082 if (perf_evlist__add_default_attrs(evsel_list,
2083 backend_attrs) < 0)
2084 return -1;
2085 }
2086 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2087 return -1;
2088 }
2089
2090 /* Detailed events get appended to the event list: */
2091
2092 if (detailed_run < 1)
2093 return 0;
2094
2095 /* Append detailed run extra attributes: */
2096 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2097 return -1;
2098
2099 if (detailed_run < 2)
2100 return 0;
2101
2102 /* Append very detailed run extra attributes: */
2103 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2104 return -1;
2105
2106 if (detailed_run < 3)
2107 return 0;
2108
2109 /* Append very, very detailed run extra attributes: */
2110 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2111 }
2112
2113 static const char * const stat_record_usage[] = {
2114 "perf stat record [<options>]",
2115 NULL,
2116 };
2117
2118 static void init_features(struct perf_session *session)
2119 {
2120 int feat;
2121
2122 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2123 perf_header__set_feat(&session->header, feat);
2124
2125 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2126 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2127 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2128 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2129 }
2130
2131 static int __cmd_record(int argc, const char **argv)
2132 {
2133 struct perf_session *session;
2134 struct perf_data_file *file = &perf_stat.file;
2135
2136 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2137 PARSE_OPT_STOP_AT_NON_OPTION);
2138
2139 if (output_name)
2140 file->path = output_name;
2141
2142 if (run_count != 1 || forever) {
2143 pr_err("Cannot use -r option with perf stat record.\n");
2144 return -1;
2145 }
2146
2147 session = perf_session__new(file, false, NULL);
2148 if (session == NULL) {
2149 pr_err("Perf session creation failed.\n");
2150 return -1;
2151 }
2152
2153 init_features(session);
2154
2155 session->evlist = evsel_list;
2156 perf_stat.session = session;
2157 perf_stat.record = true;
2158 return argc;
2159 }
2160
2161 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
2162 union perf_event *event,
2163 struct perf_session *session)
2164 {
2165 struct stat_round_event *stat_round = &event->stat_round;
2166 struct perf_evsel *counter;
2167 struct timespec tsh, *ts = NULL;
2168 const char **argv = session->header.env.cmdline_argv;
2169 int argc = session->header.env.nr_cmdline;
2170
2171 evlist__for_each_entry(evsel_list, counter)
2172 perf_stat_process_counter(&stat_config, counter);
2173
2174 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2175 update_stats(&walltime_nsecs_stats, stat_round->time);
2176
2177 if (stat_config.interval && stat_round->time) {
2178 tsh.tv_sec = stat_round->time / NSECS_PER_SEC;
2179 tsh.tv_nsec = stat_round->time % NSECS_PER_SEC;
2180 ts = &tsh;
2181 }
2182
2183 print_counters(ts, argc, argv);
2184 return 0;
2185 }
2186
2187 static
2188 int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2189 union perf_event *event,
2190 struct perf_session *session __maybe_unused)
2191 {
2192 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2193
2194 perf_event__read_stat_config(&stat_config, &event->stat_config);
2195
2196 if (cpu_map__empty(st->cpus)) {
2197 if (st->aggr_mode != AGGR_UNSET)
2198 pr_warning("warning: processing task data, aggregation mode not set\n");
2199 return 0;
2200 }
2201
2202 if (st->aggr_mode != AGGR_UNSET)
2203 stat_config.aggr_mode = st->aggr_mode;
2204
2205 if (perf_stat.file.is_pipe)
2206 perf_stat_init_aggr_mode();
2207 else
2208 perf_stat_init_aggr_mode_file(st);
2209
2210 return 0;
2211 }
2212
2213 static int set_maps(struct perf_stat *st)
2214 {
2215 if (!st->cpus || !st->threads)
2216 return 0;
2217
2218 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2219 return -EINVAL;
2220
2221 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2222
2223 if (perf_evlist__alloc_stats(evsel_list, true))
2224 return -ENOMEM;
2225
2226 st->maps_allocated = true;
2227 return 0;
2228 }
2229
2230 static
2231 int process_thread_map_event(struct perf_tool *tool __maybe_unused,
2232 union perf_event *event,
2233 struct perf_session *session __maybe_unused)
2234 {
2235 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2236
2237 if (st->threads) {
2238 pr_warning("Extra thread map event, ignoring.\n");
2239 return 0;
2240 }
2241
2242 st->threads = thread_map__new_event(&event->thread_map);
2243 if (!st->threads)
2244 return -ENOMEM;
2245
2246 return set_maps(st);
2247 }
2248
2249 static
2250 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2251 union perf_event *event,
2252 struct perf_session *session __maybe_unused)
2253 {
2254 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2255 struct cpu_map *cpus;
2256
2257 if (st->cpus) {
2258 pr_warning("Extra cpu map event, ignoring.\n");
2259 return 0;
2260 }
2261
2262 cpus = cpu_map__new_data(&event->cpu_map.data);
2263 if (!cpus)
2264 return -ENOMEM;
2265
2266 st->cpus = cpus;
2267 return set_maps(st);
2268 }
2269
2270 static const char * const stat_report_usage[] = {
2271 "perf stat report [<options>]",
2272 NULL,
2273 };
2274
2275 static struct perf_stat perf_stat = {
2276 .tool = {
2277 .attr = perf_event__process_attr,
2278 .event_update = perf_event__process_event_update,
2279 .thread_map = process_thread_map_event,
2280 .cpu_map = process_cpu_map_event,
2281 .stat_config = process_stat_config_event,
2282 .stat = perf_event__process_stat_event,
2283 .stat_round = process_stat_round_event,
2284 },
2285 .aggr_mode = AGGR_UNSET,
2286 };
2287
2288 static int __cmd_report(int argc, const char **argv)
2289 {
2290 struct perf_session *session;
2291 const struct option options[] = {
2292 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2293 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2294 "aggregate counts per processor socket", AGGR_SOCKET),
2295 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2296 "aggregate counts per physical processor core", AGGR_CORE),
2297 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2298 "disable CPU count aggregation", AGGR_NONE),
2299 OPT_END()
2300 };
2301 struct stat st;
2302 int ret;
2303
2304 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2305
2306 if (!input_name || !strlen(input_name)) {
2307 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2308 input_name = "-";
2309 else
2310 input_name = "perf.data";
2311 }
2312
2313 perf_stat.file.path = input_name;
2314 perf_stat.file.mode = PERF_DATA_MODE_READ;
2315
2316 session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2317 if (session == NULL)
2318 return -1;
2319
2320 perf_stat.session = session;
2321 stat_config.output = stderr;
2322 evsel_list = session->evlist;
2323
2324 ret = perf_session__process_events(session);
2325 if (ret)
2326 return ret;
2327
2328 perf_session__delete(session);
2329 return 0;
2330 }
2331
2332 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
2333 {
2334 const char * const stat_usage[] = {
2335 "perf stat [<options>] [<command>]",
2336 NULL
2337 };
2338 int status = -EINVAL, run_idx;
2339 const char *mode;
2340 FILE *output = stderr;
2341 unsigned int interval;
2342 const char * const stat_subcommands[] = { "record", "report" };
2343
2344 setlocale(LC_ALL, "");
2345
2346 evsel_list = perf_evlist__new();
2347 if (evsel_list == NULL)
2348 return -ENOMEM;
2349
2350 parse_events__shrink_config_terms();
2351 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2352 (const char **) stat_usage,
2353 PARSE_OPT_STOP_AT_NON_OPTION);
2354 perf_stat__init_shadow_stats();
2355
2356 if (csv_sep) {
2357 csv_output = true;
2358 if (!strcmp(csv_sep, "\\t"))
2359 csv_sep = "\t";
2360 } else
2361 csv_sep = DEFAULT_SEPARATOR;
2362
2363 if (argc && !strncmp(argv[0], "rec", 3)) {
2364 argc = __cmd_record(argc, argv);
2365 if (argc < 0)
2366 return -1;
2367 } else if (argc && !strncmp(argv[0], "rep", 3))
2368 return __cmd_report(argc, argv);
2369
2370 interval = stat_config.interval;
2371
2372 /*
2373 * For record command the -o is already taken care of.
2374 */
2375 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2376 output = NULL;
2377
2378 if (output_name && output_fd) {
2379 fprintf(stderr, "cannot use both --output and --log-fd\n");
2380 parse_options_usage(stat_usage, stat_options, "o", 1);
2381 parse_options_usage(NULL, stat_options, "log-fd", 0);
2382 goto out;
2383 }
2384
2385 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2386 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2387 goto out;
2388 }
2389
2390 if (metric_only && run_count > 1) {
2391 fprintf(stderr, "--metric-only is not supported with -r\n");
2392 goto out;
2393 }
2394
2395 if (output_fd < 0) {
2396 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2397 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2398 goto out;
2399 }
2400
2401 if (!output) {
2402 struct timespec tm;
2403 mode = append_file ? "a" : "w";
2404
2405 output = fopen(output_name, mode);
2406 if (!output) {
2407 perror("failed to create output file");
2408 return -1;
2409 }
2410 clock_gettime(CLOCK_REALTIME, &tm);
2411 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2412 } else if (output_fd > 0) {
2413 mode = append_file ? "a" : "w";
2414 output = fdopen(output_fd, mode);
2415 if (!output) {
2416 perror("Failed opening logfd");
2417 return -errno;
2418 }
2419 }
2420
2421 stat_config.output = output;
2422
2423 /*
2424 * let the spreadsheet do the pretty-printing
2425 */
2426 if (csv_output) {
2427 /* User explicitly passed -B? */
2428 if (big_num_opt == 1) {
2429 fprintf(stderr, "-B option not supported with -x\n");
2430 parse_options_usage(stat_usage, stat_options, "B", 1);
2431 parse_options_usage(NULL, stat_options, "x", 1);
2432 goto out;
2433 } else /* Nope, so disable big number formatting */
2434 big_num = false;
2435 } else if (big_num_opt == 0) /* User passed --no-big-num */
2436 big_num = false;
2437
2438 if (!argc && target__none(&target))
2439 usage_with_options(stat_usage, stat_options);
2440
2441 if (run_count < 0) {
2442 pr_err("Run count must be a positive number\n");
2443 parse_options_usage(stat_usage, stat_options, "r", 1);
2444 goto out;
2445 } else if (run_count == 0) {
2446 forever = true;
2447 run_count = 1;
2448 }
2449
2450 if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2451 fprintf(stderr, "The --per-thread option is only available "
2452 "when monitoring via -p -t options.\n");
2453 parse_options_usage(NULL, stat_options, "p", 1);
2454 parse_options_usage(NULL, stat_options, "t", 1);
2455 goto out;
2456 }
2457
2458 /*
2459 * no_aggr, cgroup are for system-wide only
2460 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2461 */
2462 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2463 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2464 !target__has_cpu(&target)) {
2465 fprintf(stderr, "both cgroup and no-aggregation "
2466 "modes only available in system-wide mode\n");
2467
2468 parse_options_usage(stat_usage, stat_options, "G", 1);
2469 parse_options_usage(NULL, stat_options, "A", 1);
2470 parse_options_usage(NULL, stat_options, "a", 1);
2471 goto out;
2472 }
2473
2474 if (add_default_attributes())
2475 goto out;
2476
2477 target__validate(&target);
2478
2479 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2480 if (target__has_task(&target)) {
2481 pr_err("Problems finding threads of monitor\n");
2482 parse_options_usage(stat_usage, stat_options, "p", 1);
2483 parse_options_usage(NULL, stat_options, "t", 1);
2484 } else if (target__has_cpu(&target)) {
2485 perror("failed to parse CPUs map");
2486 parse_options_usage(stat_usage, stat_options, "C", 1);
2487 parse_options_usage(NULL, stat_options, "a", 1);
2488 }
2489 goto out;
2490 }
2491
2492 /*
2493 * Initialize thread_map with comm names,
2494 * so we could print it out on output.
2495 */
2496 if (stat_config.aggr_mode == AGGR_THREAD)
2497 thread_map__read_comms(evsel_list->threads);
2498
2499 if (interval && interval < 100) {
2500 if (interval < 10) {
2501 pr_err("print interval must be >= 10ms\n");
2502 parse_options_usage(stat_usage, stat_options, "I", 1);
2503 goto out;
2504 } else
2505 pr_warning("print interval < 100ms. "
2506 "The overhead percentage could be high in some cases. "
2507 "Please proceed with caution.\n");
2508 }
2509
2510 if (perf_evlist__alloc_stats(evsel_list, interval))
2511 goto out;
2512
2513 if (perf_stat_init_aggr_mode())
2514 goto out;
2515
2516 /*
2517 * We dont want to block the signals - that would cause
2518 * child tasks to inherit that and Ctrl-C would not work.
2519 * What we want is for Ctrl-C to work in the exec()-ed
2520 * task, but being ignored by perf stat itself:
2521 */
2522 atexit(sig_atexit);
2523 if (!forever)
2524 signal(SIGINT, skip_signal);
2525 signal(SIGCHLD, skip_signal);
2526 signal(SIGALRM, skip_signal);
2527 signal(SIGABRT, skip_signal);
2528
2529 status = 0;
2530 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2531 if (run_count != 1 && verbose)
2532 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2533 run_idx + 1);
2534
2535 status = run_perf_stat(argc, argv);
2536 if (forever && status != -1) {
2537 print_counters(NULL, argc, argv);
2538 perf_stat__reset_stats();
2539 }
2540 }
2541
2542 if (!forever && status != -1 && !interval)
2543 print_counters(NULL, argc, argv);
2544
2545 if (STAT_RECORD) {
2546 /*
2547 * We synthesize the kernel mmap record just so that older tools
2548 * don't emit warnings about not being able to resolve symbols
2549 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2550 * a saner message about no samples being in the perf.data file.
2551 *
2552 * This also serves to suppress a warning about f_header.data.size == 0
2553 * in header.c at the moment 'perf stat record' gets introduced, which
2554 * is not really needed once we start adding the stat specific PERF_RECORD_
2555 * records, but the need to suppress the kptr_restrict messages in older
2556 * tools remain -acme
2557 */
2558 int fd = perf_data_file__fd(&perf_stat.file);
2559 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2560 process_synthesized_event,
2561 &perf_stat.session->machines.host);
2562 if (err) {
2563 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2564 "older tools may produce warnings about this file\n.");
2565 }
2566
2567 if (!interval) {
2568 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2569 pr_err("failed to write stat round event\n");
2570 }
2571
2572 if (!perf_stat.file.is_pipe) {
2573 perf_stat.session->header.data_size += perf_stat.bytes_written;
2574 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2575 }
2576
2577 perf_session__delete(perf_stat.session);
2578 }
2579
2580 perf_stat__exit_aggr_mode();
2581 perf_evlist__free_stats(evsel_list);
2582 out:
2583 perf_evlist__delete(evsel_list);
2584 return status;
2585 }
Linux with added FPC-III support