?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / tools / perf / builtin-stat.c
blob1f19f2f999c841b9da140e10bcaf5e6e0f41ee6b
1 /*
2 * builtin-stat.c
3 *
4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
6 *
7 * Sample output:
8
9 $ perf stat ./hackbench 10
10
11 Time: 0.118
12
13 Performance counter stats for './hackbench 10':
14
15 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
26
27 0.154822978 seconds time elapsed
28
29 *
30 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
31 *
32 * Improvements and fixes by:
33 *
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
39 * Jaswinder Singh Rajput <jaswinder@kernel.org>
40 *
41 * Released under the GPL v2. (and only v2, not any later version)
42 */
43
44 #include "perf.h"
45 #include "builtin.h"
46 #include "util/cgroup.h"
47 #include "util/util.h"
48 #include <subcmd/parse-options.h>
49 #include "util/parse-events.h"
50 #include "util/pmu.h"
51 #include "util/event.h"
52 #include "util/evlist.h"
53 #include "util/evsel.h"
54 #include "util/debug.h"
55 #include "util/color.h"
56 #include "util/stat.h"
57 #include "util/header.h"
58 #include "util/cpumap.h"
59 #include "util/thread.h"
60 #include "util/thread_map.h"
61 #include "util/counts.h"
62 #include "util/session.h"
63 #include "util/tool.h"
64 #include "asm/bug.h"
65
66 #include <stdlib.h>
67 #include <sys/prctl.h>
68 #include <locale.h>
69
70 #define DEFAULT_SEPARATOR " "
71 #define CNTR_NOT_SUPPORTED "<not supported>"
72 #define CNTR_NOT_COUNTED "<not counted>"
73
74 static void print_counters(struct timespec *ts, int argc, const char **argv);
75
76 /* Default events used for perf stat -T */
77 static const char *transaction_attrs = {
78 "task-clock,"
79 "{"
80 "instructions,"
81 "cycles,"
82 "cpu/cycles-t/,"
83 "cpu/tx-start/,"
84 "cpu/el-start/,"
85 "cpu/cycles-ct/"
86 "}"
87 };
88
89 /* More limited version when the CPU does not have all events. */
90 static const char * transaction_limited_attrs = {
91 "task-clock,"
92 "{"
93 "instructions,"
94 "cycles,"
95 "cpu/cycles-t/,"
96 "cpu/tx-start/"
97 "}"
98 };
99
100 static struct perf_evlist *evsel_list;
101
102 static struct target target = {
103 .uid = UINT_MAX,
104 };
105
106 typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
107
108 static int run_count = 1;
109 static bool no_inherit = false;
110 static volatile pid_t child_pid = -1;
111 static bool null_run = false;
112 static int detailed_run = 0;
113 static bool transaction_run;
114 static bool big_num = true;
115 static int big_num_opt = -1;
116 static const char *csv_sep = NULL;
117 static bool csv_output = false;
118 static bool group = false;
119 static const char *pre_cmd = NULL;
120 static const char *post_cmd = NULL;
121 static bool sync_run = false;
122 static unsigned int initial_delay = 0;
123 static unsigned int unit_width = 4; /* strlen("unit") */
124 static bool forever = false;
125 static bool metric_only = false;
126 static struct timespec ref_time;
127 static struct cpu_map *aggr_map;
128 static aggr_get_id_t aggr_get_id;
129 static bool append_file;
130 static const char *output_name;
131 static int output_fd;
132
133 struct perf_stat {
134 bool record;
135 struct perf_data_file file;
136 struct perf_session *session;
137 u64 bytes_written;
138 struct perf_tool tool;
139 bool maps_allocated;
140 struct cpu_map *cpus;
141 struct thread_map *threads;
142 enum aggr_mode aggr_mode;
143 };
144
145 static struct perf_stat perf_stat;
146 #define STAT_RECORD perf_stat.record
147
148 static volatile int done = 0;
149
150 static struct perf_stat_config stat_config = {
151 .aggr_mode = AGGR_GLOBAL,
152 .scale = true,
153 };
154
155 static inline void diff_timespec(struct timespec *r, struct timespec *a,
156 struct timespec *b)
157 {
158 r->tv_sec = a->tv_sec - b->tv_sec;
159 if (a->tv_nsec < b->tv_nsec) {
160 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
161 r->tv_sec--;
162 } else {
163 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
164 }
165 }
166
167 static void perf_stat__reset_stats(void)
168 {
169 perf_evlist__reset_stats(evsel_list);
170 perf_stat__reset_shadow_stats();
171 }
172
173 static int create_perf_stat_counter(struct perf_evsel *evsel)
174 {
175 struct perf_event_attr *attr = &evsel->attr;
176
177 if (stat_config.scale)
178 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
179 PERF_FORMAT_TOTAL_TIME_RUNNING;
180
181 attr->inherit = !no_inherit;
182
183 /*
184 * Some events get initialized with sample_(period/type) set,
185 * like tracepoints. Clear it up for counting.
186 */
187 attr->sample_period = 0;
188
189 /*
190 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
191 * while avoiding that older tools show confusing messages.
192 *
193 * However for pipe sessions we need to keep it zero,
194 * because script's perf_evsel__check_attr is triggered
195 * by attr->sample_type != 0, and we can't run it on
196 * stat sessions.
197 */
198 if (!(STAT_RECORD && perf_stat.file.is_pipe))
199 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
200
201 /*
202 * Disabling all counters initially, they will be enabled
203 * either manually by us or by kernel via enable_on_exec
204 * set later.
205 */
206 if (perf_evsel__is_group_leader(evsel)) {
207 attr->disabled = 1;
208
209 /*
210 * In case of initial_delay we enable tracee
211 * events manually.
212 */
213 if (target__none(&target) && !initial_delay)
214 attr->enable_on_exec = 1;
215 }
216
217 if (target__has_cpu(&target))
218 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
219
220 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
221 }
222
223 /*
224 * Does the counter have nsecs as a unit?
225 */
226 static inline int nsec_counter(struct perf_evsel *evsel)
227 {
228 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
229 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
230 return 1;
231
232 return 0;
233 }
234
235 static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
236 union perf_event *event,
237 struct perf_sample *sample __maybe_unused,
238 struct machine *machine __maybe_unused)
239 {
240 if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
241 pr_err("failed to write perf data, error: %m\n");
242 return -1;
243 }
244
245 perf_stat.bytes_written += event->header.size;
246 return 0;
247 }
248
249 static int write_stat_round_event(u64 tm, u64 type)
250 {
251 return perf_event__synthesize_stat_round(NULL, tm, type,
252 process_synthesized_event,
253 NULL);
254 }
255
256 #define WRITE_STAT_ROUND_EVENT(time, interval) \
257 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
258
259 #define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
260
261 static int
262 perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
263 struct perf_counts_values *count)
264 {
265 struct perf_sample_id *sid = SID(counter, cpu, thread);
266
267 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
268 process_synthesized_event, NULL);
269 }
270
271 /*
272 * Read out the results of a single counter:
273 * do not aggregate counts across CPUs in system-wide mode
274 */
275 static int read_counter(struct perf_evsel *counter)
276 {
277 int nthreads = thread_map__nr(evsel_list->threads);
278 int ncpus = perf_evsel__nr_cpus(counter);
279 int cpu, thread;
280
281 if (!counter->supported)
282 return -ENOENT;
283
284 if (counter->system_wide)
285 nthreads = 1;
286
287 for (thread = 0; thread < nthreads; thread++) {
288 for (cpu = 0; cpu < ncpus; cpu++) {
289 struct perf_counts_values *count;
290
291 count = perf_counts(counter->counts, cpu, thread);
292 if (perf_evsel__read(counter, cpu, thread, count))
293 return -1;
294
295 if (STAT_RECORD) {
296 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
297 pr_err("failed to write stat event\n");
298 return -1;
299 }
300 }
301 }
302 }
303
304 return 0;
305 }
306
307 static void read_counters(bool close_counters)
308 {
309 struct perf_evsel *counter;
310
311 evlist__for_each(evsel_list, counter) {
312 if (read_counter(counter))
313 pr_debug("failed to read counter %s\n", counter->name);
314
315 if (perf_stat_process_counter(&stat_config, counter))
316 pr_warning("failed to process counter %s\n", counter->name);
317
318 if (close_counters) {
319 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
320 thread_map__nr(evsel_list->threads));
321 }
322 }
323 }
324
325 static void process_interval(void)
326 {
327 struct timespec ts, rs;
328
329 read_counters(false);
330
331 clock_gettime(CLOCK_MONOTONIC, &ts);
332 diff_timespec(&rs, &ts, &ref_time);
333
334 if (STAT_RECORD) {
335 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL))
336 pr_err("failed to write stat round event\n");
337 }
338
339 print_counters(&rs, 0, NULL);
340 }
341
342 static void enable_counters(void)
343 {
344 if (initial_delay)
345 usleep(initial_delay * 1000);
346
347 /*
348 * We need to enable counters only if:
349 * - we don't have tracee (attaching to task or cpu)
350 * - we have initial delay configured
351 */
352 if (!target__none(&target) || initial_delay)
353 perf_evlist__enable(evsel_list);
354 }
355
356 static volatile int workload_exec_errno;
357
358 /*
359 * perf_evlist__prepare_workload will send a SIGUSR1
360 * if the fork fails, since we asked by setting its
361 * want_signal to true.
362 */
363 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
364 void *ucontext __maybe_unused)
365 {
366 workload_exec_errno = info->si_value.sival_int;
367 }
368
369 static bool has_unit(struct perf_evsel *counter)
370 {
371 return counter->unit && *counter->unit;
372 }
373
374 static bool has_scale(struct perf_evsel *counter)
375 {
376 return counter->scale != 1;
377 }
378
379 static int perf_stat_synthesize_config(bool is_pipe)
380 {
381 struct perf_evsel *counter;
382 int err;
383
384 if (is_pipe) {
385 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
386 process_synthesized_event);
387 if (err < 0) {
388 pr_err("Couldn't synthesize attrs.\n");
389 return err;
390 }
391 }
392
393 /*
394 * Synthesize other events stuff not carried within
395 * attr event - unit, scale, name
396 */
397 evlist__for_each(evsel_list, counter) {
398 if (!counter->supported)
399 continue;
400
401 /*
402 * Synthesize unit and scale only if it's defined.
403 */
404 if (has_unit(counter)) {
405 err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
406 if (err < 0) {
407 pr_err("Couldn't synthesize evsel unit.\n");
408 return err;
409 }
410 }
411
412 if (has_scale(counter)) {
413 err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
414 if (err < 0) {
415 pr_err("Couldn't synthesize evsel scale.\n");
416 return err;
417 }
418 }
419
420 if (counter->own_cpus) {
421 err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
422 if (err < 0) {
423 pr_err("Couldn't synthesize evsel scale.\n");
424 return err;
425 }
426 }
427
428 /*
429 * Name is needed only for pipe output,
430 * perf.data carries event names.
431 */
432 if (is_pipe) {
433 err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
434 if (err < 0) {
435 pr_err("Couldn't synthesize evsel name.\n");
436 return err;
437 }
438 }
439 }
440
441 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
442 process_synthesized_event,
443 NULL);
444 if (err < 0) {
445 pr_err("Couldn't synthesize thread map.\n");
446 return err;
447 }
448
449 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
450 process_synthesized_event, NULL);
451 if (err < 0) {
452 pr_err("Couldn't synthesize thread map.\n");
453 return err;
454 }
455
456 err = perf_event__synthesize_stat_config(NULL, &stat_config,
457 process_synthesized_event, NULL);
458 if (err < 0) {
459 pr_err("Couldn't synthesize config.\n");
460 return err;
461 }
462
463 return 0;
464 }
465
466 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
467
468 static int __store_counter_ids(struct perf_evsel *counter,
469 struct cpu_map *cpus,
470 struct thread_map *threads)
471 {
472 int cpu, thread;
473
474 for (cpu = 0; cpu < cpus->nr; cpu++) {
475 for (thread = 0; thread < threads->nr; thread++) {
476 int fd = FD(counter, cpu, thread);
477
478 if (perf_evlist__id_add_fd(evsel_list, counter,
479 cpu, thread, fd) < 0)
480 return -1;
481 }
482 }
483
484 return 0;
485 }
486
487 static int store_counter_ids(struct perf_evsel *counter)
488 {
489 struct cpu_map *cpus = counter->cpus;
490 struct thread_map *threads = counter->threads;
491
492 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
493 return -ENOMEM;
494
495 return __store_counter_ids(counter, cpus, threads);
496 }
497
498 static int __run_perf_stat(int argc, const char **argv)
499 {
500 int interval = stat_config.interval;
501 char msg[512];
502 unsigned long long t0, t1;
503 struct perf_evsel *counter;
504 struct timespec ts;
505 size_t l;
506 int status = 0;
507 const bool forks = (argc > 0);
508 bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
509
510 if (interval) {
511 ts.tv_sec = interval / 1000;
512 ts.tv_nsec = (interval % 1000) * 1000000;
513 } else {
514 ts.tv_sec = 1;
515 ts.tv_nsec = 0;
516 }
517
518 if (forks) {
519 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
520 workload_exec_failed_signal) < 0) {
521 perror("failed to prepare workload");
522 return -1;
523 }
524 child_pid = evsel_list->workload.pid;
525 }
526
527 if (group)
528 perf_evlist__set_leader(evsel_list);
529
530 evlist__for_each(evsel_list, counter) {
531 if (create_perf_stat_counter(counter) < 0) {
532 /*
533 * PPC returns ENXIO for HW counters until 2.6.37
534 * (behavior changed with commit b0a873e).
535 */
536 if (errno == EINVAL || errno == ENOSYS ||
537 errno == ENOENT || errno == EOPNOTSUPP ||
538 errno == ENXIO) {
539 if (verbose)
540 ui__warning("%s event is not supported by the kernel.\n",
541 perf_evsel__name(counter));
542 counter->supported = false;
543
544 if ((counter->leader != counter) ||
545 !(counter->leader->nr_members > 1))
546 continue;
547 }
548
549 perf_evsel__open_strerror(counter, &target,
550 errno, msg, sizeof(msg));
551 ui__error("%s\n", msg);
552
553 if (child_pid != -1)
554 kill(child_pid, SIGTERM);
555
556 return -1;
557 }
558 counter->supported = true;
559
560 l = strlen(counter->unit);
561 if (l > unit_width)
562 unit_width = l;
563
564 if (STAT_RECORD && store_counter_ids(counter))
565 return -1;
566 }
567
568 if (perf_evlist__apply_filters(evsel_list, &counter)) {
569 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
570 counter->filter, perf_evsel__name(counter), errno,
571 strerror_r(errno, msg, sizeof(msg)));
572 return -1;
573 }
574
575 if (STAT_RECORD) {
576 int err, fd = perf_data_file__fd(&perf_stat.file);
577
578 if (is_pipe) {
579 err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
580 } else {
581 err = perf_session__write_header(perf_stat.session, evsel_list,
582 fd, false);
583 }
584
585 if (err < 0)
586 return err;
587
588 err = perf_stat_synthesize_config(is_pipe);
589 if (err < 0)
590 return err;
591 }
592
593 /*
594 * Enable counters and exec the command:
595 */
596 t0 = rdclock();
597 clock_gettime(CLOCK_MONOTONIC, &ref_time);
598
599 if (forks) {
600 perf_evlist__start_workload(evsel_list);
601 enable_counters();
602
603 if (interval) {
604 while (!waitpid(child_pid, &status, WNOHANG)) {
605 nanosleep(&ts, NULL);
606 process_interval();
607 }
608 }
609 wait(&status);
610
611 if (workload_exec_errno) {
612 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
613 pr_err("Workload failed: %s\n", emsg);
614 return -1;
615 }
616
617 if (WIFSIGNALED(status))
618 psignal(WTERMSIG(status), argv[0]);
619 } else {
620 enable_counters();
621 while (!done) {
622 nanosleep(&ts, NULL);
623 if (interval)
624 process_interval();
625 }
626 }
627
628 t1 = rdclock();
629
630 update_stats(&walltime_nsecs_stats, t1 - t0);
631
632 read_counters(true);
633
634 return WEXITSTATUS(status);
635 }
636
637 static int run_perf_stat(int argc, const char **argv)
638 {
639 int ret;
640
641 if (pre_cmd) {
642 ret = system(pre_cmd);
643 if (ret)
644 return ret;
645 }
646
647 if (sync_run)
648 sync();
649
650 ret = __run_perf_stat(argc, argv);
651 if (ret)
652 return ret;
653
654 if (post_cmd) {
655 ret = system(post_cmd);
656 if (ret)
657 return ret;
658 }
659
660 return ret;
661 }
662
663 static void print_running(u64 run, u64 ena)
664 {
665 if (csv_output) {
666 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
667 csv_sep,
668 run,
669 csv_sep,
670 ena ? 100.0 * run / ena : 100.0);
671 } else if (run != ena) {
672 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
673 }
674 }
675
676 static void print_noise_pct(double total, double avg)
677 {
678 double pct = rel_stddev_stats(total, avg);
679
680 if (csv_output)
681 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
682 else if (pct)
683 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
684 }
685
686 static void print_noise(struct perf_evsel *evsel, double avg)
687 {
688 struct perf_stat_evsel *ps;
689
690 if (run_count == 1)
691 return;
692
693 ps = evsel->priv;
694 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
695 }
696
697 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
698 {
699 switch (stat_config.aggr_mode) {
700 case AGGR_CORE:
701 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
702 cpu_map__id_to_socket(id),
703 csv_output ? 0 : -8,
704 cpu_map__id_to_cpu(id),
705 csv_sep,
706 csv_output ? 0 : 4,
707 nr,
708 csv_sep);
709 break;
710 case AGGR_SOCKET:
711 fprintf(stat_config.output, "S%*d%s%*d%s",
712 csv_output ? 0 : -5,
713 id,
714 csv_sep,
715 csv_output ? 0 : 4,
716 nr,
717 csv_sep);
718 break;
719 case AGGR_NONE:
720 fprintf(stat_config.output, "CPU%*d%s",
721 csv_output ? 0 : -4,
722 perf_evsel__cpus(evsel)->map[id], csv_sep);
723 break;
724 case AGGR_THREAD:
725 fprintf(stat_config.output, "%*s-%*d%s",
726 csv_output ? 0 : 16,
727 thread_map__comm(evsel->threads, id),
728 csv_output ? 0 : -8,
729 thread_map__pid(evsel->threads, id),
730 csv_sep);
731 break;
732 case AGGR_GLOBAL:
733 case AGGR_UNSET:
734 default:
735 break;
736 }
737 }
738
739 struct outstate {
740 FILE *fh;
741 bool newline;
742 const char *prefix;
743 int nfields;
744 int id, nr;
745 struct perf_evsel *evsel;
746 };
747
748 #define METRIC_LEN 35
749
750 static void new_line_std(void *ctx)
751 {
752 struct outstate *os = ctx;
753
754 os->newline = true;
755 }
756
757 static void do_new_line_std(struct outstate *os)
758 {
759 fputc('\n', os->fh);
760 fputs(os->prefix, os->fh);
761 aggr_printout(os->evsel, os->id, os->nr);
762 if (stat_config.aggr_mode == AGGR_NONE)
763 fprintf(os->fh, " ");
764 fprintf(os->fh, " ");
765 }
766
767 static void print_metric_std(void *ctx, const char *color, const char *fmt,
768 const char *unit, double val)
769 {
770 struct outstate *os = ctx;
771 FILE *out = os->fh;
772 int n;
773 bool newline = os->newline;
774
775 os->newline = false;
776
777 if (unit == NULL || fmt == NULL) {
778 fprintf(out, "%-*s", METRIC_LEN, "");
779 return;
780 }
781
782 if (newline)
783 do_new_line_std(os);
784
785 n = fprintf(out, " # ");
786 if (color)
787 n += color_fprintf(out, color, fmt, val);
788 else
789 n += fprintf(out, fmt, val);
790 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
791 }
792
793 static void new_line_csv(void *ctx)
794 {
795 struct outstate *os = ctx;
796 int i;
797
798 fputc('\n', os->fh);
799 if (os->prefix)
800 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
801 aggr_printout(os->evsel, os->id, os->nr);
802 for (i = 0; i < os->nfields; i++)
803 fputs(csv_sep, os->fh);
804 }
805
806 static void print_metric_csv(void *ctx,
807 const char *color __maybe_unused,
808 const char *fmt, const char *unit, double val)
809 {
810 struct outstate *os = ctx;
811 FILE *out = os->fh;
812 char buf[64], *vals, *ends;
813
814 if (unit == NULL || fmt == NULL) {
815 fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
816 return;
817 }
818 snprintf(buf, sizeof(buf), fmt, val);
819 vals = buf;
820 while (isspace(*vals))
821 vals++;
822 ends = vals;
823 while (isdigit(*ends) || *ends == '.')
824 ends++;
825 *ends = 0;
826 while (isspace(*unit))
827 unit++;
828 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
829 }
830
831 #define METRIC_ONLY_LEN 20
832
833 /* Filter out some columns that don't work well in metrics only mode */
834
835 static bool valid_only_metric(const char *unit)
836 {
837 if (!unit)
838 return false;
839 if (strstr(unit, "/sec") ||
840 strstr(unit, "hz") ||
841 strstr(unit, "Hz") ||
842 strstr(unit, "CPUs utilized"))
843 return false;
844 return true;
845 }
846
847 static const char *fixunit(char *buf, struct perf_evsel *evsel,
848 const char *unit)
849 {
850 if (!strncmp(unit, "of all", 6)) {
851 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
852 unit);
853 return buf;
854 }
855 return unit;
856 }
857
858 static void print_metric_only(void *ctx, const char *color, const char *fmt,
859 const char *unit, double val)
860 {
861 struct outstate *os = ctx;
862 FILE *out = os->fh;
863 int n;
864 char buf[1024];
865 unsigned mlen = METRIC_ONLY_LEN;
866
867 if (!valid_only_metric(unit))
868 return;
869 unit = fixunit(buf, os->evsel, unit);
870 if (color)
871 n = color_fprintf(out, color, fmt, val);
872 else
873 n = fprintf(out, fmt, val);
874 if (n > METRIC_ONLY_LEN)
875 n = METRIC_ONLY_LEN;
876 if (mlen < strlen(unit))
877 mlen = strlen(unit) + 1;
878 fprintf(out, "%*s", mlen - n, "");
879 }
880
881 static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
882 const char *fmt,
883 const char *unit, double val)
884 {
885 struct outstate *os = ctx;
886 FILE *out = os->fh;
887 char buf[64], *vals, *ends;
888 char tbuf[1024];
889
890 if (!valid_only_metric(unit))
891 return;
892 unit = fixunit(tbuf, os->evsel, unit);
893 snprintf(buf, sizeof buf, fmt, val);
894 vals = buf;
895 while (isspace(*vals))
896 vals++;
897 ends = vals;
898 while (isdigit(*ends) || *ends == '.')
899 ends++;
900 *ends = 0;
901 fprintf(out, "%s%s", vals, csv_sep);
902 }
903
904 static void new_line_metric(void *ctx __maybe_unused)
905 {
906 }
907
908 static void print_metric_header(void *ctx, const char *color __maybe_unused,
909 const char *fmt __maybe_unused,
910 const char *unit, double val __maybe_unused)
911 {
912 struct outstate *os = ctx;
913 char tbuf[1024];
914
915 if (!valid_only_metric(unit))
916 return;
917 unit = fixunit(tbuf, os->evsel, unit);
918 if (csv_output)
919 fprintf(os->fh, "%s%s", unit, csv_sep);
920 else
921 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
922 }
923
924 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
925 {
926 FILE *output = stat_config.output;
927 double msecs = avg / 1e6;
928 const char *fmt_v, *fmt_n;
929 char name[25];
930
931 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
932 fmt_n = csv_output ? "%s" : "%-25s";
933
934 aggr_printout(evsel, id, nr);
935
936 scnprintf(name, sizeof(name), "%s%s",
937 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
938
939 fprintf(output, fmt_v, msecs, csv_sep);
940
941 if (csv_output)
942 fprintf(output, "%s%s", evsel->unit, csv_sep);
943 else
944 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
945
946 fprintf(output, fmt_n, name);
947
948 if (evsel->cgrp)
949 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
950 }
951
952 static int first_shadow_cpu(struct perf_evsel *evsel, int id)
953 {
954 int i;
955
956 if (!aggr_get_id)
957 return 0;
958
959 if (stat_config.aggr_mode == AGGR_NONE)
960 return id;
961
962 if (stat_config.aggr_mode == AGGR_GLOBAL)
963 return 0;
964
965 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
966 int cpu2 = perf_evsel__cpus(evsel)->map[i];
967
968 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
969 return cpu2;
970 }
971 return 0;
972 }
973
974 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
975 {
976 FILE *output = stat_config.output;
977 double sc = evsel->scale;
978 const char *fmt;
979
980 if (csv_output) {
981 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
982 } else {
983 if (big_num)
984 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
985 else
986 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
987 }
988
989 aggr_printout(evsel, id, nr);
990
991 fprintf(output, fmt, avg, csv_sep);
992
993 if (evsel->unit)
994 fprintf(output, "%-*s%s",
995 csv_output ? 0 : unit_width,
996 evsel->unit, csv_sep);
997
998 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
999
1000 if (evsel->cgrp)
1001 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1002 }
1003
1004 static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1005 char *prefix, u64 run, u64 ena, double noise)
1006 {
1007 struct perf_stat_output_ctx out;
1008 struct outstate os = {
1009 .fh = stat_config.output,
1010 .prefix = prefix ? prefix : "",
1011 .id = id,
1012 .nr = nr,
1013 .evsel = counter,
1014 };
1015 print_metric_t pm = print_metric_std;
1016 void (*nl)(void *);
1017
1018 if (metric_only) {
1019 nl = new_line_metric;
1020 if (csv_output)
1021 pm = print_metric_only_csv;
1022 else
1023 pm = print_metric_only;
1024 } else
1025 nl = new_line_std;
1026
1027 if (csv_output && !metric_only) {
1028 static int aggr_fields[] = {
1029 [AGGR_GLOBAL] = 0,
1030 [AGGR_THREAD] = 1,
1031 [AGGR_NONE] = 1,
1032 [AGGR_SOCKET] = 2,
1033 [AGGR_CORE] = 2,
1034 };
1035
1036 pm = print_metric_csv;
1037 nl = new_line_csv;
1038 os.nfields = 3;
1039 os.nfields += aggr_fields[stat_config.aggr_mode];
1040 if (counter->cgrp)
1041 os.nfields++;
1042 }
1043 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1044 if (metric_only) {
1045 pm(&os, NULL, "", "", 0);
1046 return;
1047 }
1048 aggr_printout(counter, id, nr);
1049
1050 fprintf(stat_config.output, "%*s%s",
1051 csv_output ? 0 : 18,
1052 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1053 csv_sep);
1054
1055 fprintf(stat_config.output, "%-*s%s",
1056 csv_output ? 0 : unit_width,
1057 counter->unit, csv_sep);
1058
1059 fprintf(stat_config.output, "%*s",
1060 csv_output ? 0 : -25,
1061 perf_evsel__name(counter));
1062
1063 if (counter->cgrp)
1064 fprintf(stat_config.output, "%s%s",
1065 csv_sep, counter->cgrp->name);
1066
1067 if (!csv_output)
1068 pm(&os, NULL, NULL, "", 0);
1069 print_noise(counter, noise);
1070 print_running(run, ena);
1071 if (csv_output)
1072 pm(&os, NULL, NULL, "", 0);
1073 return;
1074 }
1075
1076 if (metric_only)
1077 /* nothing */;
1078 else if (nsec_counter(counter))
1079 nsec_printout(id, nr, counter, uval);
1080 else
1081 abs_printout(id, nr, counter, uval);
1082
1083 out.print_metric = pm;
1084 out.new_line = nl;
1085 out.ctx = &os;
1086
1087 if (csv_output && !metric_only) {
1088 print_noise(counter, noise);
1089 print_running(run, ena);
1090 }
1091
1092 perf_stat__print_shadow_stats(counter, uval,
1093 first_shadow_cpu(counter, id),
1094 &out);
1095 if (!csv_output && !metric_only) {
1096 print_noise(counter, noise);
1097 print_running(run, ena);
1098 }
1099 }
1100
1101 static void aggr_update_shadow(void)
1102 {
1103 int cpu, s2, id, s;
1104 u64 val;
1105 struct perf_evsel *counter;
1106
1107 for (s = 0; s < aggr_map->nr; s++) {
1108 id = aggr_map->map[s];
1109 evlist__for_each(evsel_list, counter) {
1110 val = 0;
1111 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1112 s2 = aggr_get_id(evsel_list->cpus, cpu);
1113 if (s2 != id)
1114 continue;
1115 val += perf_counts(counter->counts, cpu, 0)->val;
1116 }
1117 val = val * counter->scale;
1118 perf_stat__update_shadow_stats(counter, &val,
1119 first_shadow_cpu(counter, id));
1120 }
1121 }
1122 }
1123
1124 static void print_aggr(char *prefix)
1125 {
1126 FILE *output = stat_config.output;
1127 struct perf_evsel *counter;
1128 int cpu, s, s2, id, nr;
1129 double uval;
1130 u64 ena, run, val;
1131 bool first;
1132
1133 if (!(aggr_map || aggr_get_id))
1134 return;
1135
1136 aggr_update_shadow();
1137
1138 /*
1139 * With metric_only everything is on a single line.
1140 * Without each counter has its own line.
1141 */
1142 for (s = 0; s < aggr_map->nr; s++) {
1143 if (prefix && metric_only)
1144 fprintf(output, "%s", prefix);
1145
1146 id = aggr_map->map[s];
1147 first = true;
1148 evlist__for_each(evsel_list, counter) {
1149 val = ena = run = 0;
1150 nr = 0;
1151 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1152 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1153 if (s2 != id)
1154 continue;
1155 val += perf_counts(counter->counts, cpu, 0)->val;
1156 ena += perf_counts(counter->counts, cpu, 0)->ena;
1157 run += perf_counts(counter->counts, cpu, 0)->run;
1158 nr++;
1159 }
1160 if (first && metric_only) {
1161 first = false;
1162 aggr_printout(counter, id, nr);
1163 }
1164 if (prefix && !metric_only)
1165 fprintf(output, "%s", prefix);
1166
1167 uval = val * counter->scale;
1168 printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1169 if (!metric_only)
1170 fputc('\n', output);
1171 }
1172 if (metric_only)
1173 fputc('\n', output);
1174 }
1175 }
1176
1177 static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1178 {
1179 FILE *output = stat_config.output;
1180 int nthreads = thread_map__nr(counter->threads);
1181 int ncpus = cpu_map__nr(counter->cpus);
1182 int cpu, thread;
1183 double uval;
1184
1185 for (thread = 0; thread < nthreads; thread++) {
1186 u64 ena = 0, run = 0, val = 0;
1187
1188 for (cpu = 0; cpu < ncpus; cpu++) {
1189 val += perf_counts(counter->counts, cpu, thread)->val;
1190 ena += perf_counts(counter->counts, cpu, thread)->ena;
1191 run += perf_counts(counter->counts, cpu, thread)->run;
1192 }
1193
1194 if (prefix)
1195 fprintf(output, "%s", prefix);
1196
1197 uval = val * counter->scale;
1198 printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1199 fputc('\n', output);
1200 }
1201 }
1202
1203 /*
1204 * Print out the results of a single counter:
1205 * aggregated counts in system-wide mode
1206 */
1207 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1208 {
1209 FILE *output = stat_config.output;
1210 struct perf_stat_evsel *ps = counter->priv;
1211 double avg = avg_stats(&ps->res_stats[0]);
1212 double uval;
1213 double avg_enabled, avg_running;
1214
1215 avg_enabled = avg_stats(&ps->res_stats[1]);
1216 avg_running = avg_stats(&ps->res_stats[2]);
1217
1218 if (prefix && !metric_only)
1219 fprintf(output, "%s", prefix);
1220
1221 uval = avg * counter->scale;
1222 printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1223 if (!metric_only)
1224 fprintf(output, "\n");
1225 }
1226
1227 /*
1228 * Print out the results of a single counter:
1229 * does not use aggregated count in system-wide
1230 */
1231 static void print_counter(struct perf_evsel *counter, char *prefix)
1232 {
1233 FILE *output = stat_config.output;
1234 u64 ena, run, val;
1235 double uval;
1236 int cpu;
1237
1238 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1239 val = perf_counts(counter->counts, cpu, 0)->val;
1240 ena = perf_counts(counter->counts, cpu, 0)->ena;
1241 run = perf_counts(counter->counts, cpu, 0)->run;
1242
1243 if (prefix)
1244 fprintf(output, "%s", prefix);
1245
1246 uval = val * counter->scale;
1247 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1248
1249 fputc('\n', output);
1250 }
1251 }
1252
1253 static void print_no_aggr_metric(char *prefix)
1254 {
1255 int cpu;
1256 int nrcpus = 0;
1257 struct perf_evsel *counter;
1258 u64 ena, run, val;
1259 double uval;
1260
1261 nrcpus = evsel_list->cpus->nr;
1262 for (cpu = 0; cpu < nrcpus; cpu++) {
1263 bool first = true;
1264
1265 if (prefix)
1266 fputs(prefix, stat_config.output);
1267 evlist__for_each(evsel_list, counter) {
1268 if (first) {
1269 aggr_printout(counter, cpu, 0);
1270 first = false;
1271 }
1272 val = perf_counts(counter->counts, cpu, 0)->val;
1273 ena = perf_counts(counter->counts, cpu, 0)->ena;
1274 run = perf_counts(counter->counts, cpu, 0)->run;
1275
1276 uval = val * counter->scale;
1277 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1278 }
1279 fputc('\n', stat_config.output);
1280 }
1281 }
1282
1283 static int aggr_header_lens[] = {
1284 [AGGR_CORE] = 18,
1285 [AGGR_SOCKET] = 12,
1286 [AGGR_NONE] = 6,
1287 [AGGR_THREAD] = 24,
1288 [AGGR_GLOBAL] = 0,
1289 };
1290
1291 static void print_metric_headers(char *prefix)
1292 {
1293 struct perf_stat_output_ctx out;
1294 struct perf_evsel *counter;
1295 struct outstate os = {
1296 .fh = stat_config.output
1297 };
1298
1299 if (prefix)
1300 fprintf(stat_config.output, "%s", prefix);
1301
1302 if (!csv_output)
1303 fprintf(stat_config.output, "%*s",
1304 aggr_header_lens[stat_config.aggr_mode], "");
1305
1306 /* Print metrics headers only */
1307 evlist__for_each(evsel_list, counter) {
1308 os.evsel = counter;
1309 out.ctx = &os;
1310 out.print_metric = print_metric_header;
1311 out.new_line = new_line_metric;
1312 os.evsel = counter;
1313 perf_stat__print_shadow_stats(counter, 0,
1314 0,
1315 &out);
1316 }
1317 fputc('\n', stat_config.output);
1318 }
1319
1320 static void print_interval(char *prefix, struct timespec *ts)
1321 {
1322 FILE *output = stat_config.output;
1323 static int num_print_interval;
1324
1325 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1326
1327 if (num_print_interval == 0 && !csv_output && !metric_only) {
1328 switch (stat_config.aggr_mode) {
1329 case AGGR_SOCKET:
1330 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
1331 break;
1332 case AGGR_CORE:
1333 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
1334 break;
1335 case AGGR_NONE:
1336 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
1337 break;
1338 case AGGR_THREAD:
1339 fprintf(output, "# time comm-pid counts %*s events\n", unit_width, "unit");
1340 break;
1341 case AGGR_GLOBAL:
1342 default:
1343 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
1344 case AGGR_UNSET:
1345 break;
1346 }
1347 }
1348
1349 if (++num_print_interval == 25)
1350 num_print_interval = 0;
1351 }
1352
1353 static void print_header(int argc, const char **argv)
1354 {
1355 FILE *output = stat_config.output;
1356 int i;
1357
1358 fflush(stdout);
1359
1360 if (!csv_output) {
1361 fprintf(output, "\n");
1362 fprintf(output, " Performance counter stats for ");
1363 if (target.system_wide)
1364 fprintf(output, "\'system wide");
1365 else if (target.cpu_list)
1366 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1367 else if (!target__has_task(&target)) {
1368 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1369 for (i = 1; argv && (i < argc); i++)
1370 fprintf(output, " %s", argv[i]);
1371 } else if (target.pid)
1372 fprintf(output, "process id \'%s", target.pid);
1373 else
1374 fprintf(output, "thread id \'%s", target.tid);
1375
1376 fprintf(output, "\'");
1377 if (run_count > 1)
1378 fprintf(output, " (%d runs)", run_count);
1379 fprintf(output, ":\n\n");
1380 }
1381 }
1382
1383 static void print_footer(void)
1384 {
1385 FILE *output = stat_config.output;
1386
1387 if (!null_run)
1388 fprintf(output, "\n");
1389 fprintf(output, " %17.9f seconds time elapsed",
1390 avg_stats(&walltime_nsecs_stats)/1e9);
1391 if (run_count > 1) {
1392 fprintf(output, " ");
1393 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1394 avg_stats(&walltime_nsecs_stats));
1395 }
1396 fprintf(output, "\n\n");
1397 }
1398
1399 static void print_counters(struct timespec *ts, int argc, const char **argv)
1400 {
1401 int interval = stat_config.interval;
1402 struct perf_evsel *counter;
1403 char buf[64], *prefix = NULL;
1404
1405 /* Do not print anything if we record to the pipe. */
1406 if (STAT_RECORD && perf_stat.file.is_pipe)
1407 return;
1408
1409 if (interval)
1410 print_interval(prefix = buf, ts);
1411 else
1412 print_header(argc, argv);
1413
1414 if (metric_only) {
1415 static int num_print_iv;
1416
1417 if (num_print_iv == 0)
1418 print_metric_headers(prefix);
1419 if (num_print_iv++ == 25)
1420 num_print_iv = 0;
1421 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1422 fprintf(stat_config.output, "%s", prefix);
1423 }
1424
1425 switch (stat_config.aggr_mode) {
1426 case AGGR_CORE:
1427 case AGGR_SOCKET:
1428 print_aggr(prefix);
1429 break;
1430 case AGGR_THREAD:
1431 evlist__for_each(evsel_list, counter)
1432 print_aggr_thread(counter, prefix);
1433 break;
1434 case AGGR_GLOBAL:
1435 evlist__for_each(evsel_list, counter)
1436 print_counter_aggr(counter, prefix);
1437 if (metric_only)
1438 fputc('\n', stat_config.output);
1439 break;
1440 case AGGR_NONE:
1441 if (metric_only)
1442 print_no_aggr_metric(prefix);
1443 else {
1444 evlist__for_each(evsel_list, counter)
1445 print_counter(counter, prefix);
1446 }
1447 break;
1448 case AGGR_UNSET:
1449 default:
1450 break;
1451 }
1452
1453 if (!interval && !csv_output)
1454 print_footer();
1455
1456 fflush(stat_config.output);
1457 }
1458
1459 static volatile int signr = -1;
1460
1461 static void skip_signal(int signo)
1462 {
1463 if ((child_pid == -1) || stat_config.interval)
1464 done = 1;
1465
1466 signr = signo;
1467 /*
1468 * render child_pid harmless
1469 * won't send SIGTERM to a random
1470 * process in case of race condition
1471 * and fast PID recycling
1472 */
1473 child_pid = -1;
1474 }
1475
1476 static void sig_atexit(void)
1477 {
1478 sigset_t set, oset;
1479
1480 /*
1481 * avoid race condition with SIGCHLD handler
1482 * in skip_signal() which is modifying child_pid
1483 * goal is to avoid send SIGTERM to a random
1484 * process
1485 */
1486 sigemptyset(&set);
1487 sigaddset(&set, SIGCHLD);
1488 sigprocmask(SIG_BLOCK, &set, &oset);
1489
1490 if (child_pid != -1)
1491 kill(child_pid, SIGTERM);
1492
1493 sigprocmask(SIG_SETMASK, &oset, NULL);
1494
1495 if (signr == -1)
1496 return;
1497
1498 signal(signr, SIG_DFL);
1499 kill(getpid(), signr);
1500 }
1501
1502 static int stat__set_big_num(const struct option *opt __maybe_unused,
1503 const char *s __maybe_unused, int unset)
1504 {
1505 big_num_opt = unset ? 0 : 1;
1506 return 0;
1507 }
1508
1509 static const struct option stat_options[] = {
1510 OPT_BOOLEAN('T', "transaction", &transaction_run,
1511 "hardware transaction statistics"),
1512 OPT_CALLBACK('e', "event", &evsel_list, "event",
1513 "event selector. use 'perf list' to list available events",
1514 parse_events_option),
1515 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1516 "event filter", parse_filter),
1517 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1518 "child tasks do not inherit counters"),
1519 OPT_STRING('p', "pid", &target.pid, "pid",
1520 "stat events on existing process id"),
1521 OPT_STRING('t', "tid", &target.tid, "tid",
1522 "stat events on existing thread id"),
1523 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1524 "system-wide collection from all CPUs"),
1525 OPT_BOOLEAN('g', "group", &group,
1526 "put the counters into a counter group"),
1527 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1528 OPT_INCR('v', "verbose", &verbose,
1529 "be more verbose (show counter open errors, etc)"),
1530 OPT_INTEGER('r', "repeat", &run_count,
1531 "repeat command and print average + stddev (max: 100, forever: 0)"),
1532 OPT_BOOLEAN('n', "null", &null_run,
1533 "null run - dont start any counters"),
1534 OPT_INCR('d', "detailed", &detailed_run,
1535 "detailed run - start a lot of events"),
1536 OPT_BOOLEAN('S', "sync", &sync_run,
1537 "call sync() before starting a run"),
1538 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1539 "print large numbers with thousands\' separators",
1540 stat__set_big_num),
1541 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1542 "list of cpus to monitor in system-wide"),
1543 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1544 "disable CPU count aggregation", AGGR_NONE),
1545 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1546 "print counts with custom separator"),
1547 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1548 "monitor event in cgroup name only", parse_cgroups),
1549 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1550 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1551 OPT_INTEGER(0, "log-fd", &output_fd,
1552 "log output to fd, instead of stderr"),
1553 OPT_STRING(0, "pre", &pre_cmd, "command",
1554 "command to run prior to the measured command"),
1555 OPT_STRING(0, "post", &post_cmd, "command",
1556 "command to run after to the measured command"),
1557 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1558 "print counts at regular interval in ms (>= 10)"),
1559 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1560 "aggregate counts per processor socket", AGGR_SOCKET),
1561 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1562 "aggregate counts per physical processor core", AGGR_CORE),
1563 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1564 "aggregate counts per thread", AGGR_THREAD),
1565 OPT_UINTEGER('D', "delay", &initial_delay,
1566 "ms to wait before starting measurement after program start"),
1567 OPT_BOOLEAN(0, "metric-only", &metric_only,
1568 "Only print computed metrics. No raw values"),
1569 OPT_END()
1570 };
1571
1572 static int perf_stat__get_socket(struct cpu_map *map, int cpu)
1573 {
1574 return cpu_map__get_socket(map, cpu, NULL);
1575 }
1576
1577 static int perf_stat__get_core(struct cpu_map *map, int cpu)
1578 {
1579 return cpu_map__get_core(map, cpu, NULL);
1580 }
1581
1582 static int cpu_map__get_max(struct cpu_map *map)
1583 {
1584 int i, max = -1;
1585
1586 for (i = 0; i < map->nr; i++) {
1587 if (map->map[i] > max)
1588 max = map->map[i];
1589 }
1590
1591 return max;
1592 }
1593
1594 static struct cpu_map *cpus_aggr_map;
1595
1596 static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
1597 {
1598 int cpu;
1599
1600 if (idx >= map->nr)
1601 return -1;
1602
1603 cpu = map->map[idx];
1604
1605 if (cpus_aggr_map->map[cpu] == -1)
1606 cpus_aggr_map->map[cpu] = get_id(map, idx);
1607
1608 return cpus_aggr_map->map[cpu];
1609 }
1610
1611 static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
1612 {
1613 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1614 }
1615
1616 static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
1617 {
1618 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1619 }
1620
1621 static int perf_stat_init_aggr_mode(void)
1622 {
1623 int nr;
1624
1625 switch (stat_config.aggr_mode) {
1626 case AGGR_SOCKET:
1627 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1628 perror("cannot build socket map");
1629 return -1;
1630 }
1631 aggr_get_id = perf_stat__get_socket_cached;
1632 break;
1633 case AGGR_CORE:
1634 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1635 perror("cannot build core map");
1636 return -1;
1637 }
1638 aggr_get_id = perf_stat__get_core_cached;
1639 break;
1640 case AGGR_NONE:
1641 case AGGR_GLOBAL:
1642 case AGGR_THREAD:
1643 case AGGR_UNSET:
1644 default:
1645 break;
1646 }
1647
1648 /*
1649 * The evsel_list->cpus is the base we operate on,
1650 * taking the highest cpu number to be the size of
1651 * the aggregation translate cpumap.
1652 */
1653 nr = cpu_map__get_max(evsel_list->cpus);
1654 cpus_aggr_map = cpu_map__empty_new(nr + 1);
1655 return cpus_aggr_map ? 0 : -ENOMEM;
1656 }
1657
1658 static void perf_stat__exit_aggr_mode(void)
1659 {
1660 cpu_map__put(aggr_map);
1661 cpu_map__put(cpus_aggr_map);
1662 aggr_map = NULL;
1663 cpus_aggr_map = NULL;
1664 }
1665
1666 static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1667 {
1668 int cpu;
1669
1670 if (idx > map->nr)
1671 return -1;
1672
1673 cpu = map->map[idx];
1674
1675 if (cpu >= env->nr_cpus_online)
1676 return -1;
1677
1678 return cpu;
1679 }
1680
1681 static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1682 {
1683 struct perf_env *env = data;
1684 int cpu = perf_env__get_cpu(env, map, idx);
1685
1686 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
1687 }
1688
1689 static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1690 {
1691 struct perf_env *env = data;
1692 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1693
1694 if (cpu != -1) {
1695 int socket_id = env->cpu[cpu].socket_id;
1696
1697 /*
1698 * Encode socket in upper 16 bits
1699 * core_id is relative to socket, and
1700 * we need a global id. So we combine
1701 * socket + core id.
1702 */
1703 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
1704 }
1705
1706 return core;
1707 }
1708
1709 static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1710 struct cpu_map **sockp)
1711 {
1712 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1713 }
1714
1715 static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1716 struct cpu_map **corep)
1717 {
1718 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1719 }
1720
1721 static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
1722 {
1723 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1724 }
1725
1726 static int perf_stat__get_core_file(struct cpu_map *map, int idx)
1727 {
1728 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1729 }
1730
1731 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1732 {
1733 struct perf_env *env = &st->session->header.env;
1734
1735 switch (stat_config.aggr_mode) {
1736 case AGGR_SOCKET:
1737 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1738 perror("cannot build socket map");
1739 return -1;
1740 }
1741 aggr_get_id = perf_stat__get_socket_file;
1742 break;
1743 case AGGR_CORE:
1744 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1745 perror("cannot build core map");
1746 return -1;
1747 }
1748 aggr_get_id = perf_stat__get_core_file;
1749 break;
1750 case AGGR_NONE:
1751 case AGGR_GLOBAL:
1752 case AGGR_THREAD:
1753 case AGGR_UNSET:
1754 default:
1755 break;
1756 }
1757
1758 return 0;
1759 }
1760
1761 /*
1762 * Add default attributes, if there were no attributes specified or
1763 * if -d/--detailed, -d -d or -d -d -d is used:
1764 */
1765 static int add_default_attributes(void)
1766 {
1767 struct perf_event_attr default_attrs0[] = {
1768
1769 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1770 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1771 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1772 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1773
1774 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1775 };
1776 struct perf_event_attr frontend_attrs[] = {
1777 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1778 };
1779 struct perf_event_attr backend_attrs[] = {
1780 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1781 };
1782 struct perf_event_attr default_attrs1[] = {
1783 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1784 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1785 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1786
1787 };
1788
1789 /*
1790 * Detailed stats (-d), covering the L1 and last level data caches:
1791 */
1792 struct perf_event_attr detailed_attrs[] = {
1793
1794 { .type = PERF_TYPE_HW_CACHE,
1795 .config =
1796 PERF_COUNT_HW_CACHE_L1D << 0 |
1797 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1798 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1799
1800 { .type = PERF_TYPE_HW_CACHE,
1801 .config =
1802 PERF_COUNT_HW_CACHE_L1D << 0 |
1803 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1804 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1805
1806 { .type = PERF_TYPE_HW_CACHE,
1807 .config =
1808 PERF_COUNT_HW_CACHE_LL << 0 |
1809 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1810 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1811
1812 { .type = PERF_TYPE_HW_CACHE,
1813 .config =
1814 PERF_COUNT_HW_CACHE_LL << 0 |
1815 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1816 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1817 };
1818
1819 /*
1820 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1821 */
1822 struct perf_event_attr very_detailed_attrs[] = {
1823
1824 { .type = PERF_TYPE_HW_CACHE,
1825 .config =
1826 PERF_COUNT_HW_CACHE_L1I << 0 |
1827 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1828 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1829
1830 { .type = PERF_TYPE_HW_CACHE,
1831 .config =
1832 PERF_COUNT_HW_CACHE_L1I << 0 |
1833 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1834 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1835
1836 { .type = PERF_TYPE_HW_CACHE,
1837 .config =
1838 PERF_COUNT_HW_CACHE_DTLB << 0 |
1839 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1840 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1841
1842 { .type = PERF_TYPE_HW_CACHE,
1843 .config =
1844 PERF_COUNT_HW_CACHE_DTLB << 0 |
1845 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1846 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1847
1848 { .type = PERF_TYPE_HW_CACHE,
1849 .config =
1850 PERF_COUNT_HW_CACHE_ITLB << 0 |
1851 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1852 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1853
1854 { .type = PERF_TYPE_HW_CACHE,
1855 .config =
1856 PERF_COUNT_HW_CACHE_ITLB << 0 |
1857 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1858 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1859
1860 };
1861
1862 /*
1863 * Very, very detailed stats (-d -d -d), adding prefetch events:
1864 */
1865 struct perf_event_attr very_very_detailed_attrs[] = {
1866
1867 { .type = PERF_TYPE_HW_CACHE,
1868 .config =
1869 PERF_COUNT_HW_CACHE_L1D << 0 |
1870 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1871 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1872
1873 { .type = PERF_TYPE_HW_CACHE,
1874 .config =
1875 PERF_COUNT_HW_CACHE_L1D << 0 |
1876 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1877 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1878 };
1879
1880 /* Set attrs if no event is selected and !null_run: */
1881 if (null_run)
1882 return 0;
1883
1884 if (transaction_run) {
1885 int err;
1886 if (pmu_have_event("cpu", "cycles-ct") &&
1887 pmu_have_event("cpu", "el-start"))
1888 err = parse_events(evsel_list, transaction_attrs, NULL);
1889 else
1890 err = parse_events(evsel_list, transaction_limited_attrs, NULL);
1891 if (err) {
1892 fprintf(stderr, "Cannot set up transaction events\n");
1893 return -1;
1894 }
1895 return 0;
1896 }
1897
1898 if (!evsel_list->nr_entries) {
1899 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
1900 return -1;
1901 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
1902 if (perf_evlist__add_default_attrs(evsel_list,
1903 frontend_attrs) < 0)
1904 return -1;
1905 }
1906 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
1907 if (perf_evlist__add_default_attrs(evsel_list,
1908 backend_attrs) < 0)
1909 return -1;
1910 }
1911 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
1912 return -1;
1913 }
1914
1915 /* Detailed events get appended to the event list: */
1916
1917 if (detailed_run < 1)
1918 return 0;
1919
1920 /* Append detailed run extra attributes: */
1921 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1922 return -1;
1923
1924 if (detailed_run < 2)
1925 return 0;
1926
1927 /* Append very detailed run extra attributes: */
1928 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1929 return -1;
1930
1931 if (detailed_run < 3)
1932 return 0;
1933
1934 /* Append very, very detailed run extra attributes: */
1935 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1936 }
1937
1938 static const char * const stat_record_usage[] = {
1939 "perf stat record [<options>]",
1940 NULL,
1941 };
1942
1943 static void init_features(struct perf_session *session)
1944 {
1945 int feat;
1946
1947 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
1948 perf_header__set_feat(&session->header, feat);
1949
1950 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
1951 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
1952 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
1953 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
1954 }
1955
1956 static int __cmd_record(int argc, const char **argv)
1957 {
1958 struct perf_session *session;
1959 struct perf_data_file *file = &perf_stat.file;
1960
1961 argc = parse_options(argc, argv, stat_options, stat_record_usage,
1962 PARSE_OPT_STOP_AT_NON_OPTION);
1963
1964 if (output_name)
1965 file->path = output_name;
1966
1967 if (run_count != 1 || forever) {
1968 pr_err("Cannot use -r option with perf stat record.\n");
1969 return -1;
1970 }
1971
1972 session = perf_session__new(file, false, NULL);
1973 if (session == NULL) {
1974 pr_err("Perf session creation failed.\n");
1975 return -1;
1976 }
1977
1978 init_features(session);
1979
1980 session->evlist = evsel_list;
1981 perf_stat.session = session;
1982 perf_stat.record = true;
1983 return argc;
1984 }
1985
1986 static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
1987 union perf_event *event,
1988 struct perf_session *session)
1989 {
1990 struct stat_round_event *round = &event->stat_round;
1991 struct perf_evsel *counter;
1992 struct timespec tsh, *ts = NULL;
1993 const char **argv = session->header.env.cmdline_argv;
1994 int argc = session->header.env.nr_cmdline;
1995
1996 evlist__for_each(evsel_list, counter)
1997 perf_stat_process_counter(&stat_config, counter);
1998
1999 if (round->type == PERF_STAT_ROUND_TYPE__FINAL)
2000 update_stats(&walltime_nsecs_stats, round->time);
2001
2002 if (stat_config.interval && round->time) {
2003 tsh.tv_sec = round->time / NSECS_PER_SEC;
2004 tsh.tv_nsec = round->time % NSECS_PER_SEC;
2005 ts = &tsh;
2006 }
2007
2008 print_counters(ts, argc, argv);
2009 return 0;
2010 }
2011
2012 static
2013 int process_stat_config_event(struct perf_tool *tool __maybe_unused,
2014 union perf_event *event,
2015 struct perf_session *session __maybe_unused)
2016 {
2017 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2018
2019 perf_event__read_stat_config(&stat_config, &event->stat_config);
2020
2021 if (cpu_map__empty(st->cpus)) {
2022 if (st->aggr_mode != AGGR_UNSET)
2023 pr_warning("warning: processing task data, aggregation mode not set\n");
2024 return 0;
2025 }
2026
2027 if (st->aggr_mode != AGGR_UNSET)
2028 stat_config.aggr_mode = st->aggr_mode;
2029
2030 if (perf_stat.file.is_pipe)
2031 perf_stat_init_aggr_mode();
2032 else
2033 perf_stat_init_aggr_mode_file(st);
2034
2035 return 0;
2036 }
2037
2038 static int set_maps(struct perf_stat *st)
2039 {
2040 if (!st->cpus || !st->threads)
2041 return 0;
2042
2043 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2044 return -EINVAL;
2045
2046 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2047
2048 if (perf_evlist__alloc_stats(evsel_list, true))
2049 return -ENOMEM;
2050
2051 st->maps_allocated = true;
2052 return 0;
2053 }
2054
2055 static
2056 int process_thread_map_event(struct perf_tool *tool __maybe_unused,
2057 union perf_event *event,
2058 struct perf_session *session __maybe_unused)
2059 {
2060 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2061
2062 if (st->threads) {
2063 pr_warning("Extra thread map event, ignoring.\n");
2064 return 0;
2065 }
2066
2067 st->threads = thread_map__new_event(&event->thread_map);
2068 if (!st->threads)
2069 return -ENOMEM;
2070
2071 return set_maps(st);
2072 }
2073
2074 static
2075 int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
2076 union perf_event *event,
2077 struct perf_session *session __maybe_unused)
2078 {
2079 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2080 struct cpu_map *cpus;
2081
2082 if (st->cpus) {
2083 pr_warning("Extra cpu map event, ignoring.\n");
2084 return 0;
2085 }
2086
2087 cpus = cpu_map__new_data(&event->cpu_map.data);
2088 if (!cpus)
2089 return -ENOMEM;
2090
2091 st->cpus = cpus;
2092 return set_maps(st);
2093 }
2094
2095 static const char * const stat_report_usage[] = {
2096 "perf stat report [<options>]",
2097 NULL,
2098 };
2099
2100 static struct perf_stat perf_stat = {
2101 .tool = {
2102 .attr = perf_event__process_attr,
2103 .event_update = perf_event__process_event_update,
2104 .thread_map = process_thread_map_event,
2105 .cpu_map = process_cpu_map_event,
2106 .stat_config = process_stat_config_event,
2107 .stat = perf_event__process_stat_event,
2108 .stat_round = process_stat_round_event,
2109 },
2110 .aggr_mode = AGGR_UNSET,
2111 };
2112
2113 static int __cmd_report(int argc, const char **argv)
2114 {
2115 struct perf_session *session;
2116 const struct option options[] = {
2117 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2118 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2119 "aggregate counts per processor socket", AGGR_SOCKET),
2120 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2121 "aggregate counts per physical processor core", AGGR_CORE),
2122 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2123 "disable CPU count aggregation", AGGR_NONE),
2124 OPT_END()
2125 };
2126 struct stat st;
2127 int ret;
2128
2129 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2130
2131 if (!input_name || !strlen(input_name)) {
2132 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2133 input_name = "-";
2134 else
2135 input_name = "perf.data";
2136 }
2137
2138 perf_stat.file.path = input_name;
2139 perf_stat.file.mode = PERF_DATA_MODE_READ;
2140
2141 session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2142 if (session == NULL)
2143 return -1;
2144
2145 perf_stat.session = session;
2146 stat_config.output = stderr;
2147 evsel_list = session->evlist;
2148
2149 ret = perf_session__process_events(session);
2150 if (ret)
2151 return ret;
2152
2153 perf_session__delete(session);
2154 return 0;
2155 }
2156
2157 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
2158 {
2159 const char * const stat_usage[] = {
2160 "perf stat [<options>] [<command>]",
2161 NULL
2162 };
2163 int status = -EINVAL, run_idx;
2164 const char *mode;
2165 FILE *output = stderr;
2166 unsigned int interval;
2167 const char * const stat_subcommands[] = { "record", "report" };
2168
2169 setlocale(LC_ALL, "");
2170
2171 evsel_list = perf_evlist__new();
2172 if (evsel_list == NULL)
2173 return -ENOMEM;
2174
2175 parse_events__shrink_config_terms();
2176 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2177 (const char **) stat_usage,
2178 PARSE_OPT_STOP_AT_NON_OPTION);
2179 perf_stat__init_shadow_stats();
2180
2181 if (csv_sep) {
2182 csv_output = true;
2183 if (!strcmp(csv_sep, "\\t"))
2184 csv_sep = "\t";
2185 } else
2186 csv_sep = DEFAULT_SEPARATOR;
2187
2188 if (argc && !strncmp(argv[0], "rec", 3)) {
2189 argc = __cmd_record(argc, argv);
2190 if (argc < 0)
2191 return -1;
2192 } else if (argc && !strncmp(argv[0], "rep", 3))
2193 return __cmd_report(argc, argv);
2194
2195 interval = stat_config.interval;
2196
2197 /*
2198 * For record command the -o is already taken care of.
2199 */
2200 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2201 output = NULL;
2202
2203 if (output_name && output_fd) {
2204 fprintf(stderr, "cannot use both --output and --log-fd\n");
2205 parse_options_usage(stat_usage, stat_options, "o", 1);
2206 parse_options_usage(NULL, stat_options, "log-fd", 0);
2207 goto out;
2208 }
2209
2210 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2211 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2212 goto out;
2213 }
2214
2215 if (metric_only && run_count > 1) {
2216 fprintf(stderr, "--metric-only is not supported with -r\n");
2217 goto out;
2218 }
2219
2220 if (output_fd < 0) {
2221 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2222 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2223 goto out;
2224 }
2225
2226 if (!output) {
2227 struct timespec tm;
2228 mode = append_file ? "a" : "w";
2229
2230 output = fopen(output_name, mode);
2231 if (!output) {
2232 perror("failed to create output file");
2233 return -1;
2234 }
2235 clock_gettime(CLOCK_REALTIME, &tm);
2236 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2237 } else if (output_fd > 0) {
2238 mode = append_file ? "a" : "w";
2239 output = fdopen(output_fd, mode);
2240 if (!output) {
2241 perror("Failed opening logfd");
2242 return -errno;
2243 }
2244 }
2245
2246 stat_config.output = output;
2247
2248 /*
2249 * let the spreadsheet do the pretty-printing
2250 */
2251 if (csv_output) {
2252 /* User explicitly passed -B? */
2253 if (big_num_opt == 1) {
2254 fprintf(stderr, "-B option not supported with -x\n");
2255 parse_options_usage(stat_usage, stat_options, "B", 1);
2256 parse_options_usage(NULL, stat_options, "x", 1);
2257 goto out;
2258 } else /* Nope, so disable big number formatting */
2259 big_num = false;
2260 } else if (big_num_opt == 0) /* User passed --no-big-num */
2261 big_num = false;
2262
2263 if (!argc && target__none(&target))
2264 usage_with_options(stat_usage, stat_options);
2265
2266 if (run_count < 0) {
2267 pr_err("Run count must be a positive number\n");
2268 parse_options_usage(stat_usage, stat_options, "r", 1);
2269 goto out;
2270 } else if (run_count == 0) {
2271 forever = true;
2272 run_count = 1;
2273 }
2274
2275 if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2276 fprintf(stderr, "The --per-thread option is only available "
2277 "when monitoring via -p -t options.\n");
2278 parse_options_usage(NULL, stat_options, "p", 1);
2279 parse_options_usage(NULL, stat_options, "t", 1);
2280 goto out;
2281 }
2282
2283 /*
2284 * no_aggr, cgroup are for system-wide only
2285 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2286 */
2287 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2288 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2289 !target__has_cpu(&target)) {
2290 fprintf(stderr, "both cgroup and no-aggregation "
2291 "modes only available in system-wide mode\n");
2292
2293 parse_options_usage(stat_usage, stat_options, "G", 1);
2294 parse_options_usage(NULL, stat_options, "A", 1);
2295 parse_options_usage(NULL, stat_options, "a", 1);
2296 goto out;
2297 }
2298
2299 if (add_default_attributes())
2300 goto out;
2301
2302 target__validate(&target);
2303
2304 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2305 if (target__has_task(&target)) {
2306 pr_err("Problems finding threads of monitor\n");
2307 parse_options_usage(stat_usage, stat_options, "p", 1);
2308 parse_options_usage(NULL, stat_options, "t", 1);
2309 } else if (target__has_cpu(&target)) {
2310 perror("failed to parse CPUs map");
2311 parse_options_usage(stat_usage, stat_options, "C", 1);
2312 parse_options_usage(NULL, stat_options, "a", 1);
2313 }
2314 goto out;
2315 }
2316
2317 /*
2318 * Initialize thread_map with comm names,
2319 * so we could print it out on output.
2320 */
2321 if (stat_config.aggr_mode == AGGR_THREAD)
2322 thread_map__read_comms(evsel_list->threads);
2323
2324 if (interval && interval < 100) {
2325 if (interval < 10) {
2326 pr_err("print interval must be >= 10ms\n");
2327 parse_options_usage(stat_usage, stat_options, "I", 1);
2328 goto out;
2329 } else
2330 pr_warning("print interval < 100ms. "
2331 "The overhead percentage could be high in some cases. "
2332 "Please proceed with caution.\n");
2333 }
2334
2335 if (perf_evlist__alloc_stats(evsel_list, interval))
2336 goto out;
2337
2338 if (perf_stat_init_aggr_mode())
2339 goto out;
2340
2341 /*
2342 * We dont want to block the signals - that would cause
2343 * child tasks to inherit that and Ctrl-C would not work.
2344 * What we want is for Ctrl-C to work in the exec()-ed
2345 * task, but being ignored by perf stat itself:
2346 */
2347 atexit(sig_atexit);
2348 if (!forever)
2349 signal(SIGINT, skip_signal);
2350 signal(SIGCHLD, skip_signal);
2351 signal(SIGALRM, skip_signal);
2352 signal(SIGABRT, skip_signal);
2353
2354 status = 0;
2355 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2356 if (run_count != 1 && verbose)
2357 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2358 run_idx + 1);
2359
2360 status = run_perf_stat(argc, argv);
2361 if (forever && status != -1) {
2362 print_counters(NULL, argc, argv);
2363 perf_stat__reset_stats();
2364 }
2365 }
2366
2367 if (!forever && status != -1 && !interval)
2368 print_counters(NULL, argc, argv);
2369
2370 if (STAT_RECORD) {
2371 /*
2372 * We synthesize the kernel mmap record just so that older tools
2373 * don't emit warnings about not being able to resolve symbols
2374 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2375 * a saner message about no samples being in the perf.data file.
2376 *
2377 * This also serves to suppress a warning about f_header.data.size == 0
2378 * in header.c at the moment 'perf stat record' gets introduced, which
2379 * is not really needed once we start adding the stat specific PERF_RECORD_
2380 * records, but the need to suppress the kptr_restrict messages in older
2381 * tools remain -acme
2382 */
2383 int fd = perf_data_file__fd(&perf_stat.file);
2384 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2385 process_synthesized_event,
2386 &perf_stat.session->machines.host);
2387 if (err) {
2388 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2389 "older tools may produce warnings about this file\n.");
2390 }
2391
2392 if (!interval) {
2393 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2394 pr_err("failed to write stat round event\n");
2395 }
2396
2397 if (!perf_stat.file.is_pipe) {
2398 perf_stat.session->header.data_size += perf_stat.bytes_written;
2399 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2400 }
2401
2402 perf_session__delete(perf_stat.session);
2403 }
2404
2405 perf_stat__exit_aggr_mode();
2406 perf_evlist__free_stats(evsel_list);
2407 out:
2408 perf_evlist__delete(evsel_list);
2409 return status;
2410 }
CRIS linux kernel tree