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43#include "builtin.h"
44#include "perf.h"
45#include "util/cgroup.h"
46#include <subcmd/parse-options.h>
47#include "util/parse-events.h"
48#include "util/pmu.h"
49#include "util/event.h"
50#include "util/evlist.h"
51#include "util/evlist-hybrid.h"
52#include "util/evsel.h"
53#include "util/debug.h"
54#include "util/color.h"
55#include "util/stat.h"
56#include "util/header.h"
57#include "util/cpumap.h"
58#include "util/thread_map.h"
59#include "util/counts.h"
60#include "util/topdown.h"
61#include "util/session.h"
62#include "util/tool.h"
63#include "util/string2.h"
64#include "util/metricgroup.h"
65#include "util/synthetic-events.h"
66#include "util/target.h"
67#include "util/time-utils.h"
68#include "util/top.h"
69#include "util/affinity.h"
70#include "util/pfm.h"
71#include "util/bpf_counter.h"
72#include "util/iostat.h"
73#include "util/pmu-hybrid.h"
74#include "asm/bug.h"
75
76#include <linux/time64.h>
77#include <linux/zalloc.h>
78#include <api/fs/fs.h>
79#include <errno.h>
80#include <signal.h>
81#include <stdlib.h>
82#include <sys/prctl.h>
83#include <inttypes.h>
84#include <locale.h>
85#include <math.h>
86#include <sys/types.h>
87#include <sys/stat.h>
88#include <sys/wait.h>
89#include <unistd.h>
90#include <sys/time.h>
91#include <sys/resource.h>
92#include <linux/err.h>
93
94#include <linux/ctype.h>
95#include <perf/evlist.h>
96
97#define DEFAULT_SEPARATOR " "
98#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
99
100static void print_counters(struct timespec *ts, int argc, const char **argv);
101
102
103static const char *transaction_attrs = {
104 "task-clock,"
105 "{"
106 "instructions,"
107 "cycles,"
108 "cpu/cycles-t/,"
109 "cpu/tx-start/,"
110 "cpu/el-start/,"
111 "cpu/cycles-ct/"
112 "}"
113};
114
115
116static const char * transaction_limited_attrs = {
117 "task-clock,"
118 "{"
119 "instructions,"
120 "cycles,"
121 "cpu/cycles-t/,"
122 "cpu/tx-start/"
123 "}"
124};
125
126static const char * topdown_attrs[] = {
127 "topdown-total-slots",
128 "topdown-slots-retired",
129 "topdown-recovery-bubbles",
130 "topdown-fetch-bubbles",
131 "topdown-slots-issued",
132 NULL,
133};
134
135static const char *topdown_metric_attrs[] = {
136 "slots",
137 "topdown-retiring",
138 "topdown-bad-spec",
139 "topdown-fe-bound",
140 "topdown-be-bound",
141 NULL,
142};
143
144static const char *topdown_metric_L2_attrs[] = {
145 "slots",
146 "topdown-retiring",
147 "topdown-bad-spec",
148 "topdown-fe-bound",
149 "topdown-be-bound",
150 "topdown-heavy-ops",
151 "topdown-br-mispredict",
152 "topdown-fetch-lat",
153 "topdown-mem-bound",
154 NULL,
155};
156
157#define TOPDOWN_MAX_LEVEL 2
158
159static const char *smi_cost_attrs = {
160 "{"
161 "msr/aperf/,"
162 "msr/smi/,"
163 "cycles"
164 "}"
165};
166
167static struct evlist *evsel_list;
168static bool all_counters_use_bpf = true;
169
170static struct target target = {
171 .uid = UINT_MAX,
172};
173
174#define METRIC_ONLY_LEN 20
175
176static volatile pid_t child_pid = -1;
177static int detailed_run = 0;
178static bool transaction_run;
179static bool topdown_run = false;
180static bool smi_cost = false;
181static bool smi_reset = false;
182static int big_num_opt = -1;
183static bool group = false;
184static const char *pre_cmd = NULL;
185static const char *post_cmd = NULL;
186static bool sync_run = false;
187static bool forever = false;
188static bool force_metric_only = false;
189static struct timespec ref_time;
190static bool append_file;
191static bool interval_count;
192static const char *output_name;
193static int output_fd;
194
195struct perf_stat {
196 bool record;
197 struct perf_data data;
198 struct perf_session *session;
199 u64 bytes_written;
200 struct perf_tool tool;
201 bool maps_allocated;
202 struct perf_cpu_map *cpus;
203 struct perf_thread_map *threads;
204 enum aggr_mode aggr_mode;
205};
206
207static struct perf_stat perf_stat;
208#define STAT_RECORD perf_stat.record
209
210static volatile int done = 0;
211
212static struct perf_stat_config stat_config = {
213 .aggr_mode = AGGR_GLOBAL,
214 .scale = true,
215 .unit_width = 4,
216 .run_count = 1,
217 .metric_only_len = METRIC_ONLY_LEN,
218 .walltime_nsecs_stats = &walltime_nsecs_stats,
219 .big_num = true,
220 .ctl_fd = -1,
221 .ctl_fd_ack = -1,
222 .iostat_run = false,
223};
224
225static bool cpus_map_matched(struct evsel *a, struct evsel *b)
226{
227 if (!a->core.cpus && !b->core.cpus)
228 return true;
229
230 if (!a->core.cpus || !b->core.cpus)
231 return false;
232
233 if (a->core.cpus->nr != b->core.cpus->nr)
234 return false;
235
236 for (int i = 0; i < a->core.cpus->nr; i++) {
237 if (a->core.cpus->map[i] != b->core.cpus->map[i])
238 return false;
239 }
240
241 return true;
242}
243
244static void evlist__check_cpu_maps(struct evlist *evlist)
245{
246 struct evsel *evsel, *pos, *leader;
247 char buf[1024];
248
249 if (evlist__has_hybrid(evlist))
250 evlist__warn_hybrid_group(evlist);
251
252 evlist__for_each_entry(evlist, evsel) {
253 leader = evsel__leader(evsel);
254
255
256 if (leader == evsel)
257 continue;
258 if (cpus_map_matched(leader, evsel))
259 continue;
260
261
262 WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n");
263 evsel__group_desc(leader, buf, sizeof(buf));
264 pr_warning(" %s\n", buf);
265
266 if (verbose) {
267 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
268 pr_warning(" %s: %s\n", leader->name, buf);
269 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
270 pr_warning(" %s: %s\n", evsel->name, buf);
271 }
272
273 for_each_group_evsel(pos, leader) {
274 evsel__set_leader(pos, pos);
275 pos->core.nr_members = 0;
276 }
277 evsel->core.leader->nr_members = 0;
278 }
279}
280
281static inline void diff_timespec(struct timespec *r, struct timespec *a,
282 struct timespec *b)
283{
284 r->tv_sec = a->tv_sec - b->tv_sec;
285 if (a->tv_nsec < b->tv_nsec) {
286 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
287 r->tv_sec--;
288 } else {
289 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
290 }
291}
292
293static void perf_stat__reset_stats(void)
294{
295 int i;
296
297 evlist__reset_stats(evsel_list);
298 perf_stat__reset_shadow_stats();
299
300 for (i = 0; i < stat_config.stats_num; i++)
301 perf_stat__reset_shadow_per_stat(&stat_config.stats[i]);
302}
303
304static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
305 union perf_event *event,
306 struct perf_sample *sample __maybe_unused,
307 struct machine *machine __maybe_unused)
308{
309 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
310 pr_err("failed to write perf data, error: %m\n");
311 return -1;
312 }
313
314 perf_stat.bytes_written += event->header.size;
315 return 0;
316}
317
318static int write_stat_round_event(u64 tm, u64 type)
319{
320 return perf_event__synthesize_stat_round(NULL, tm, type,
321 process_synthesized_event,
322 NULL);
323}
324
325#define WRITE_STAT_ROUND_EVENT(time, interval) \
326 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
327
328#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
329
330static int evsel__write_stat_event(struct evsel *counter, u32 cpu, u32 thread,
331 struct perf_counts_values *count)
332{
333 struct perf_sample_id *sid = SID(counter, cpu, thread);
334
335 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
336 process_synthesized_event, NULL);
337}
338
339static int read_single_counter(struct evsel *counter, int cpu,
340 int thread, struct timespec *rs)
341{
342 if (counter->tool_event == PERF_TOOL_DURATION_TIME) {
343 u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL;
344 struct perf_counts_values *count =
345 perf_counts(counter->counts, cpu, thread);
346 count->ena = count->run = val;
347 count->val = val;
348 return 0;
349 }
350 return evsel__read_counter(counter, cpu, thread);
351}
352
353
354
355
356
357static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu)
358{
359 int nthreads = perf_thread_map__nr(evsel_list->core.threads);
360 int thread;
361
362 if (!counter->supported)
363 return -ENOENT;
364
365 if (counter->core.system_wide)
366 nthreads = 1;
367
368 for (thread = 0; thread < nthreads; thread++) {
369 struct perf_counts_values *count;
370
371 count = perf_counts(counter->counts, cpu, thread);
372
373
374
375
376
377 if (!perf_counts__is_loaded(counter->counts, cpu, thread) &&
378 read_single_counter(counter, cpu, thread, rs)) {
379 counter->counts->scaled = -1;
380 perf_counts(counter->counts, cpu, thread)->ena = 0;
381 perf_counts(counter->counts, cpu, thread)->run = 0;
382 return -1;
383 }
384
385 perf_counts__set_loaded(counter->counts, cpu, thread, false);
386
387 if (STAT_RECORD) {
388 if (evsel__write_stat_event(counter, cpu, thread, count)) {
389 pr_err("failed to write stat event\n");
390 return -1;
391 }
392 }
393
394 if (verbose > 1) {
395 fprintf(stat_config.output,
396 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
397 evsel__name(counter),
398 cpu,
399 count->val, count->ena, count->run);
400 }
401 }
402
403 return 0;
404}
405
406static int read_affinity_counters(struct timespec *rs)
407{
408 struct evsel *counter;
409 struct affinity affinity;
410 int i, ncpus, cpu;
411
412 if (all_counters_use_bpf)
413 return 0;
414
415 if (affinity__setup(&affinity) < 0)
416 return -1;
417
418 ncpus = perf_cpu_map__nr(evsel_list->core.all_cpus);
419 if (!target__has_cpu(&target) || target__has_per_thread(&target))
420 ncpus = 1;
421 evlist__for_each_cpu(evsel_list, i, cpu) {
422 if (i >= ncpus)
423 break;
424 affinity__set(&affinity, cpu);
425
426 evlist__for_each_entry(evsel_list, counter) {
427 if (evsel__cpu_iter_skip(counter, cpu))
428 continue;
429 if (evsel__is_bpf(counter))
430 continue;
431 if (!counter->err) {
432 counter->err = read_counter_cpu(counter, rs,
433 counter->cpu_iter - 1);
434 }
435 }
436 }
437 affinity__cleanup(&affinity);
438 return 0;
439}
440
441static int read_bpf_map_counters(void)
442{
443 struct evsel *counter;
444 int err;
445
446 evlist__for_each_entry(evsel_list, counter) {
447 if (!evsel__is_bpf(counter))
448 continue;
449
450 err = bpf_counter__read(counter);
451 if (err)
452 return err;
453 }
454 return 0;
455}
456
457static void read_counters(struct timespec *rs)
458{
459 struct evsel *counter;
460
461 if (!stat_config.stop_read_counter) {
462 if (read_bpf_map_counters() ||
463 read_affinity_counters(rs))
464 return;
465 }
466
467 evlist__for_each_entry(evsel_list, counter) {
468 if (counter->err)
469 pr_debug("failed to read counter %s\n", counter->name);
470 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
471 pr_warning("failed to process counter %s\n", counter->name);
472 counter->err = 0;
473 }
474}
475
476static int runtime_stat_new(struct perf_stat_config *config, int nthreads)
477{
478 int i;
479
480 config->stats = calloc(nthreads, sizeof(struct runtime_stat));
481 if (!config->stats)
482 return -1;
483
484 config->stats_num = nthreads;
485
486 for (i = 0; i < nthreads; i++)
487 runtime_stat__init(&config->stats[i]);
488
489 return 0;
490}
491
492static void runtime_stat_delete(struct perf_stat_config *config)
493{
494 int i;
495
496 if (!config->stats)
497 return;
498
499 for (i = 0; i < config->stats_num; i++)
500 runtime_stat__exit(&config->stats[i]);
501
502 zfree(&config->stats);
503}
504
505static void runtime_stat_reset(struct perf_stat_config *config)
506{
507 int i;
508
509 if (!config->stats)
510 return;
511
512 for (i = 0; i < config->stats_num; i++)
513 perf_stat__reset_shadow_per_stat(&config->stats[i]);
514}
515
516static void process_interval(void)
517{
518 struct timespec ts, rs;
519
520 clock_gettime(CLOCK_MONOTONIC, &ts);
521 diff_timespec(&rs, &ts, &ref_time);
522
523 perf_stat__reset_shadow_per_stat(&rt_stat);
524 runtime_stat_reset(&stat_config);
525 read_counters(&rs);
526
527 if (STAT_RECORD) {
528 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
529 pr_err("failed to write stat round event\n");
530 }
531
532 init_stats(&walltime_nsecs_stats);
533 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
534 print_counters(&rs, 0, NULL);
535}
536
537static bool handle_interval(unsigned int interval, int *times)
538{
539 if (interval) {
540 process_interval();
541 if (interval_count && !(--(*times)))
542 return true;
543 }
544 return false;
545}
546
547static int enable_counters(void)
548{
549 struct evsel *evsel;
550 int err;
551
552 evlist__for_each_entry(evsel_list, evsel) {
553 if (!evsel__is_bpf(evsel))
554 continue;
555
556 err = bpf_counter__enable(evsel);
557 if (err)
558 return err;
559 }
560
561 if (stat_config.initial_delay < 0) {
562 pr_info(EVLIST_DISABLED_MSG);
563 return 0;
564 }
565
566 if (stat_config.initial_delay > 0) {
567 pr_info(EVLIST_DISABLED_MSG);
568 usleep(stat_config.initial_delay * USEC_PER_MSEC);
569 }
570
571
572
573
574
575
576 if (!target__none(&target) || stat_config.initial_delay) {
577 if (!all_counters_use_bpf)
578 evlist__enable(evsel_list);
579 if (stat_config.initial_delay > 0)
580 pr_info(EVLIST_ENABLED_MSG);
581 }
582 return 0;
583}
584
585static void disable_counters(void)
586{
587 struct evsel *counter;
588
589
590
591
592
593
594 if (!target__none(&target)) {
595 evlist__for_each_entry(evsel_list, counter)
596 bpf_counter__disable(counter);
597 if (!all_counters_use_bpf)
598 evlist__disable(evsel_list);
599 }
600}
601
602static volatile int workload_exec_errno;
603
604
605
606
607
608
609static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
610 void *ucontext __maybe_unused)
611{
612 workload_exec_errno = info->si_value.sival_int;
613}
614
615static bool evsel__should_store_id(struct evsel *counter)
616{
617 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
618}
619
620static bool is_target_alive(struct target *_target,
621 struct perf_thread_map *threads)
622{
623 struct stat st;
624 int i;
625
626 if (!target__has_task(_target))
627 return true;
628
629 for (i = 0; i < threads->nr; i++) {
630 char path[PATH_MAX];
631
632 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
633 threads->map[i].pid);
634
635 if (!stat(path, &st))
636 return true;
637 }
638
639 return false;
640}
641
642static void process_evlist(struct evlist *evlist, unsigned int interval)
643{
644 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
645
646 if (evlist__ctlfd_process(evlist, &cmd) > 0) {
647 switch (cmd) {
648 case EVLIST_CTL_CMD_ENABLE:
649 if (interval)
650 process_interval();
651 break;
652 case EVLIST_CTL_CMD_DISABLE:
653 if (interval)
654 process_interval();
655 break;
656 case EVLIST_CTL_CMD_SNAPSHOT:
657 case EVLIST_CTL_CMD_ACK:
658 case EVLIST_CTL_CMD_UNSUPPORTED:
659 case EVLIST_CTL_CMD_EVLIST:
660 case EVLIST_CTL_CMD_STOP:
661 case EVLIST_CTL_CMD_PING:
662 default:
663 break;
664 }
665 }
666}
667
668static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
669 int *time_to_sleep)
670{
671 int tts = *time_to_sleep;
672 struct timespec time_diff;
673
674 diff_timespec(&time_diff, time_stop, time_start);
675
676 tts -= time_diff.tv_sec * MSEC_PER_SEC +
677 time_diff.tv_nsec / NSEC_PER_MSEC;
678
679 if (tts < 0)
680 tts = 0;
681
682 *time_to_sleep = tts;
683}
684
685static int dispatch_events(bool forks, int timeout, int interval, int *times)
686{
687 int child_exited = 0, status = 0;
688 int time_to_sleep, sleep_time;
689 struct timespec time_start, time_stop;
690
691 if (interval)
692 sleep_time = interval;
693 else if (timeout)
694 sleep_time = timeout;
695 else
696 sleep_time = 1000;
697
698 time_to_sleep = sleep_time;
699
700 while (!done) {
701 if (forks)
702 child_exited = waitpid(child_pid, &status, WNOHANG);
703 else
704 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
705
706 if (child_exited)
707 break;
708
709 clock_gettime(CLOCK_MONOTONIC, &time_start);
710 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) {
711 if (timeout || handle_interval(interval, times))
712 break;
713 time_to_sleep = sleep_time;
714 } else {
715 process_evlist(evsel_list, interval);
716 clock_gettime(CLOCK_MONOTONIC, &time_stop);
717 compute_tts(&time_start, &time_stop, &time_to_sleep);
718 }
719 }
720
721 return status;
722}
723
724enum counter_recovery {
725 COUNTER_SKIP,
726 COUNTER_RETRY,
727 COUNTER_FATAL,
728};
729
730static enum counter_recovery stat_handle_error(struct evsel *counter)
731{
732 char msg[BUFSIZ];
733
734
735
736
737 if (errno == EINVAL || errno == ENOSYS ||
738 errno == ENOENT || errno == EOPNOTSUPP ||
739 errno == ENXIO) {
740 if (verbose > 0)
741 ui__warning("%s event is not supported by the kernel.\n",
742 evsel__name(counter));
743 counter->supported = false;
744
745
746
747
748 counter->errored = true;
749
750 if ((evsel__leader(counter) != counter) ||
751 !(counter->core.leader->nr_members > 1))
752 return COUNTER_SKIP;
753 } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) {
754 if (verbose > 0)
755 ui__warning("%s\n", msg);
756 return COUNTER_RETRY;
757 } else if (target__has_per_thread(&target) &&
758 evsel_list->core.threads &&
759 evsel_list->core.threads->err_thread != -1) {
760
761
762
763
764 if (!thread_map__remove(evsel_list->core.threads,
765 evsel_list->core.threads->err_thread)) {
766 evsel_list->core.threads->err_thread = -1;
767 return COUNTER_RETRY;
768 }
769 }
770
771 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
772 ui__error("%s\n", msg);
773
774 if (child_pid != -1)
775 kill(child_pid, SIGTERM);
776 return COUNTER_FATAL;
777}
778
779static int __run_perf_stat(int argc, const char **argv, int run_idx)
780{
781 int interval = stat_config.interval;
782 int times = stat_config.times;
783 int timeout = stat_config.timeout;
784 char msg[BUFSIZ];
785 unsigned long long t0, t1;
786 struct evsel *counter;
787 size_t l;
788 int status = 0;
789 const bool forks = (argc > 0);
790 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
791 struct affinity affinity;
792 int i, cpu, err;
793 bool second_pass = false;
794
795 if (forks) {
796 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
797 perror("failed to prepare workload");
798 return -1;
799 }
800 child_pid = evsel_list->workload.pid;
801 }
802
803 if (group)
804 evlist__set_leader(evsel_list);
805
806 if (affinity__setup(&affinity) < 0)
807 return -1;
808
809 evlist__for_each_entry(evsel_list, counter) {
810 if (bpf_counter__load(counter, &target))
811 return -1;
812 if (!evsel__is_bpf(counter))
813 all_counters_use_bpf = false;
814 }
815
816 evlist__for_each_cpu (evsel_list, i, cpu) {
817
818
819
820
821 if (target.use_bpf)
822 break;
823 affinity__set(&affinity, cpu);
824
825 evlist__for_each_entry(evsel_list, counter) {
826 if (evsel__cpu_iter_skip(counter, cpu))
827 continue;
828 if (counter->reset_group || counter->errored)
829 continue;
830 if (evsel__is_bpf(counter))
831 continue;
832try_again:
833 if (create_perf_stat_counter(counter, &stat_config, &target,
834 counter->cpu_iter - 1) < 0) {
835
836
837
838
839
840
841
842
843 if ((errno == EINVAL || errno == EBADF) &&
844 evsel__leader(counter) != counter &&
845 counter->weak_group) {
846 evlist__reset_weak_group(evsel_list, counter, false);
847 assert(counter->reset_group);
848 second_pass = true;
849 continue;
850 }
851
852 switch (stat_handle_error(counter)) {
853 case COUNTER_FATAL:
854 return -1;
855 case COUNTER_RETRY:
856 goto try_again;
857 case COUNTER_SKIP:
858 continue;
859 default:
860 break;
861 }
862
863 }
864 counter->supported = true;
865 }
866 }
867
868 if (second_pass) {
869
870
871
872
873
874 evlist__for_each_cpu(evsel_list, i, cpu) {
875 affinity__set(&affinity, cpu);
876
877 evlist__for_each_entry(evsel_list, counter) {
878 if (!counter->reset_group && !counter->errored)
879 continue;
880 if (evsel__cpu_iter_skip_no_inc(counter, cpu))
881 continue;
882 perf_evsel__close_cpu(&counter->core, counter->cpu_iter);
883 }
884
885 evlist__for_each_entry(evsel_list, counter) {
886 if (!counter->reset_group && !counter->errored)
887 continue;
888 if (evsel__cpu_iter_skip(counter, cpu))
889 continue;
890 if (!counter->reset_group)
891 continue;
892try_again_reset:
893 pr_debug2("reopening weak %s\n", evsel__name(counter));
894 if (create_perf_stat_counter(counter, &stat_config, &target,
895 counter->cpu_iter - 1) < 0) {
896
897 switch (stat_handle_error(counter)) {
898 case COUNTER_FATAL:
899 return -1;
900 case COUNTER_RETRY:
901 goto try_again_reset;
902 case COUNTER_SKIP:
903 continue;
904 default:
905 break;
906 }
907 }
908 counter->supported = true;
909 }
910 }
911 }
912 affinity__cleanup(&affinity);
913
914 evlist__for_each_entry(evsel_list, counter) {
915 if (!counter->supported) {
916 perf_evsel__free_fd(&counter->core);
917 continue;
918 }
919
920 l = strlen(counter->unit);
921 if (l > stat_config.unit_width)
922 stat_config.unit_width = l;
923
924 if (evsel__should_store_id(counter) &&
925 evsel__store_ids(counter, evsel_list))
926 return -1;
927 }
928
929 if (evlist__apply_filters(evsel_list, &counter)) {
930 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
931 counter->filter, evsel__name(counter), errno,
932 str_error_r(errno, msg, sizeof(msg)));
933 return -1;
934 }
935
936 if (STAT_RECORD) {
937 int fd = perf_data__fd(&perf_stat.data);
938
939 if (is_pipe) {
940 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
941 } else {
942 err = perf_session__write_header(perf_stat.session, evsel_list,
943 fd, false);
944 }
945
946 if (err < 0)
947 return err;
948
949 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
950 process_synthesized_event, is_pipe);
951 if (err < 0)
952 return err;
953 }
954
955
956
957
958 if (forks) {
959 evlist__start_workload(evsel_list);
960 err = enable_counters();
961 if (err)
962 return -1;
963
964 t0 = rdclock();
965 clock_gettime(CLOCK_MONOTONIC, &ref_time);
966
967 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
968 status = dispatch_events(forks, timeout, interval, ×);
969 if (child_pid != -1) {
970 if (timeout)
971 kill(child_pid, SIGTERM);
972 wait4(child_pid, &status, 0, &stat_config.ru_data);
973 }
974
975 if (workload_exec_errno) {
976 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
977 pr_err("Workload failed: %s\n", emsg);
978 return -1;
979 }
980
981 if (WIFSIGNALED(status))
982 psignal(WTERMSIG(status), argv[0]);
983 } else {
984 err = enable_counters();
985 if (err)
986 return -1;
987
988 t0 = rdclock();
989 clock_gettime(CLOCK_MONOTONIC, &ref_time);
990
991 status = dispatch_events(forks, timeout, interval, ×);
992 }
993
994 disable_counters();
995
996 t1 = rdclock();
997
998 if (stat_config.walltime_run_table)
999 stat_config.walltime_run[run_idx] = t1 - t0;
1000
1001 if (interval && stat_config.summary) {
1002 stat_config.interval = 0;
1003 stat_config.stop_read_counter = true;
1004 init_stats(&walltime_nsecs_stats);
1005 update_stats(&walltime_nsecs_stats, t1 - t0);
1006
1007 if (stat_config.aggr_mode == AGGR_GLOBAL)
1008 evlist__save_aggr_prev_raw_counts(evsel_list);
1009
1010 evlist__copy_prev_raw_counts(evsel_list);
1011 evlist__reset_prev_raw_counts(evsel_list);
1012 runtime_stat_reset(&stat_config);
1013 perf_stat__reset_shadow_per_stat(&rt_stat);
1014 } else
1015 update_stats(&walltime_nsecs_stats, t1 - t0);
1016
1017
1018
1019
1020
1021
1022
1023 read_counters(&(struct timespec) { .tv_nsec = t1-t0 });
1024
1025
1026
1027
1028
1029 if (!STAT_RECORD)
1030 evlist__close(evsel_list);
1031
1032 return WEXITSTATUS(status);
1033}
1034
1035static int run_perf_stat(int argc, const char **argv, int run_idx)
1036{
1037 int ret;
1038
1039 if (pre_cmd) {
1040 ret = system(pre_cmd);
1041 if (ret)
1042 return ret;
1043 }
1044
1045 if (sync_run)
1046 sync();
1047
1048 ret = __run_perf_stat(argc, argv, run_idx);
1049 if (ret)
1050 return ret;
1051
1052 if (post_cmd) {
1053 ret = system(post_cmd);
1054 if (ret)
1055 return ret;
1056 }
1057
1058 return ret;
1059}
1060
1061static void print_counters(struct timespec *ts, int argc, const char **argv)
1062{
1063
1064 if (STAT_RECORD && perf_stat.data.is_pipe)
1065 return;
1066 if (stat_config.quiet)
1067 return;
1068
1069 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
1070}
1071
1072static volatile int signr = -1;
1073
1074static void skip_signal(int signo)
1075{
1076 if ((child_pid == -1) || stat_config.interval)
1077 done = 1;
1078
1079 signr = signo;
1080
1081
1082
1083
1084
1085
1086 child_pid = -1;
1087}
1088
1089static void sig_atexit(void)
1090{
1091 sigset_t set, oset;
1092
1093
1094
1095
1096
1097
1098
1099 sigemptyset(&set);
1100 sigaddset(&set, SIGCHLD);
1101 sigprocmask(SIG_BLOCK, &set, &oset);
1102
1103 if (child_pid != -1)
1104 kill(child_pid, SIGTERM);
1105
1106 sigprocmask(SIG_SETMASK, &oset, NULL);
1107
1108 if (signr == -1)
1109 return;
1110
1111 signal(signr, SIG_DFL);
1112 kill(getpid(), signr);
1113}
1114
1115void perf_stat__set_big_num(int set)
1116{
1117 stat_config.big_num = (set != 0);
1118}
1119
1120void perf_stat__set_no_csv_summary(int set)
1121{
1122 stat_config.no_csv_summary = (set != 0);
1123}
1124
1125static int stat__set_big_num(const struct option *opt __maybe_unused,
1126 const char *s __maybe_unused, int unset)
1127{
1128 big_num_opt = unset ? 0 : 1;
1129 perf_stat__set_big_num(!unset);
1130 return 0;
1131}
1132
1133static int enable_metric_only(const struct option *opt __maybe_unused,
1134 const char *s __maybe_unused, int unset)
1135{
1136 force_metric_only = true;
1137 stat_config.metric_only = !unset;
1138 return 0;
1139}
1140
1141static int parse_metric_groups(const struct option *opt,
1142 const char *str,
1143 int unset __maybe_unused)
1144{
1145 return metricgroup__parse_groups(opt, str,
1146 stat_config.metric_no_group,
1147 stat_config.metric_no_merge,
1148 &stat_config.metric_events);
1149}
1150
1151static int parse_control_option(const struct option *opt,
1152 const char *str,
1153 int unset __maybe_unused)
1154{
1155 struct perf_stat_config *config = opt->value;
1156
1157 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1158}
1159
1160static int parse_stat_cgroups(const struct option *opt,
1161 const char *str, int unset)
1162{
1163 if (stat_config.cgroup_list) {
1164 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1165 return -1;
1166 }
1167
1168 return parse_cgroups(opt, str, unset);
1169}
1170
1171static struct option stat_options[] = {
1172 OPT_BOOLEAN('T', "transaction", &transaction_run,
1173 "hardware transaction statistics"),
1174 OPT_CALLBACK('e', "event", &evsel_list, "event",
1175 "event selector. use 'perf list' to list available events",
1176 parse_events_option),
1177 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1178 "event filter", parse_filter),
1179 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
1180 "child tasks do not inherit counters"),
1181 OPT_STRING('p', "pid", &target.pid, "pid",
1182 "stat events on existing process id"),
1183 OPT_STRING('t', "tid", &target.tid, "tid",
1184 "stat events on existing thread id"),
1185#ifdef HAVE_BPF_SKEL
1186 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
1187 "stat events on existing bpf program id"),
1188 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
1189 "use bpf program to count events"),
1190 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
1191 "path to perf_event_attr map"),
1192#endif
1193 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1194 "system-wide collection from all CPUs"),
1195 OPT_BOOLEAN('g', "group", &group,
1196 "put the counters into a counter group"),
1197 OPT_BOOLEAN(0, "scale", &stat_config.scale,
1198 "Use --no-scale to disable counter scaling for multiplexing"),
1199 OPT_INCR('v', "verbose", &verbose,
1200 "be more verbose (show counter open errors, etc)"),
1201 OPT_INTEGER('r', "repeat", &stat_config.run_count,
1202 "repeat command and print average + stddev (max: 100, forever: 0)"),
1203 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
1204 "display details about each run (only with -r option)"),
1205 OPT_BOOLEAN('n', "null", &stat_config.null_run,
1206 "null run - dont start any counters"),
1207 OPT_INCR('d', "detailed", &detailed_run,
1208 "detailed run - start a lot of events"),
1209 OPT_BOOLEAN('S', "sync", &sync_run,
1210 "call sync() before starting a run"),
1211 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1212 "print large numbers with thousands\' separators",
1213 stat__set_big_num),
1214 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1215 "list of cpus to monitor in system-wide"),
1216 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1217 "disable CPU count aggregation", AGGR_NONE),
1218 OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"),
1219 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
1220 "print counts with custom separator"),
1221 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1222 "monitor event in cgroup name only", parse_stat_cgroups),
1223 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
1224 "expand events for each cgroup"),
1225 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1226 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1227 OPT_INTEGER(0, "log-fd", &output_fd,
1228 "log output to fd, instead of stderr"),
1229 OPT_STRING(0, "pre", &pre_cmd, "command",
1230 "command to run prior to the measured command"),
1231 OPT_STRING(0, "post", &post_cmd, "command",
1232 "command to run after to the measured command"),
1233 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1234 "print counts at regular interval in ms "
1235 "(overhead is possible for values <= 100ms)"),
1236 OPT_INTEGER(0, "interval-count", &stat_config.times,
1237 "print counts for fixed number of times"),
1238 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
1239 "clear screen in between new interval"),
1240 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
1241 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
1242 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1243 "aggregate counts per processor socket", AGGR_SOCKET),
1244 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode,
1245 "aggregate counts per processor die", AGGR_DIE),
1246 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1247 "aggregate counts per physical processor core", AGGR_CORE),
1248 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1249 "aggregate counts per thread", AGGR_THREAD),
1250 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode,
1251 "aggregate counts per numa node", AGGR_NODE),
1252 OPT_INTEGER('D', "delay", &stat_config.initial_delay,
1253 "ms to wait before starting measurement after program start (-1: start with events disabled)"),
1254 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
1255 "Only print computed metrics. No raw values", enable_metric_only),
1256 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
1257 "don't group metric events, impacts multiplexing"),
1258 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
1259 "don't try to share events between metrics in a group"),
1260 OPT_BOOLEAN(0, "topdown", &topdown_run,
1261 "measure top-down statistics"),
1262 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
1263 "Set the metrics level for the top-down statistics (0: max level)"),
1264 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
1265 "measure SMI cost"),
1266 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
1267 "monitor specified metrics or metric groups (separated by ,)",
1268 parse_metric_groups),
1269 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
1270 "Configure all used events to run in kernel space.",
1271 PARSE_OPT_EXCLUSIVE),
1272 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
1273 "Configure all used events to run in user space.",
1274 PARSE_OPT_EXCLUSIVE),
1275 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
1276 "Use with 'percore' event qualifier to show the event "
1277 "counts of one hardware thread by sum up total hardware "
1278 "threads of same physical core"),
1279 OPT_BOOLEAN(0, "summary", &stat_config.summary,
1280 "print summary for interval mode"),
1281 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
1282 "don't print 'summary' for CSV summary output"),
1283 OPT_BOOLEAN(0, "quiet", &stat_config.quiet,
1284 "don't print output (useful with record)"),
1285#ifdef HAVE_LIBPFM
1286 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
1287 "libpfm4 event selector. use 'perf list' to list available events",
1288 parse_libpfm_events_option),
1289#endif
1290 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
1291 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
1292 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
1293 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
1294 parse_control_option),
1295 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
1296 "measure I/O performance metrics provided by arch/platform",
1297 iostat_parse),
1298 OPT_END()
1299};
1300
1301static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1302 struct perf_cpu_map *map, int cpu)
1303{
1304 return cpu_map__get_socket(map, cpu, NULL);
1305}
1306
1307static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1308 struct perf_cpu_map *map, int cpu)
1309{
1310 return cpu_map__get_die(map, cpu, NULL);
1311}
1312
1313static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1314 struct perf_cpu_map *map, int cpu)
1315{
1316 return cpu_map__get_core(map, cpu, NULL);
1317}
1318
1319static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1320 struct perf_cpu_map *map, int cpu)
1321{
1322 return cpu_map__get_node(map, cpu, NULL);
1323}
1324
1325static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1326 aggr_get_id_t get_id, struct perf_cpu_map *map, int idx)
1327{
1328 int cpu;
1329 struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1330
1331 if (idx >= map->nr)
1332 return id;
1333
1334 cpu = map->map[idx];
1335
1336 if (cpu_map__aggr_cpu_id_is_empty(config->cpus_aggr_map->map[cpu]))
1337 config->cpus_aggr_map->map[cpu] = get_id(config, map, idx);
1338
1339 id = config->cpus_aggr_map->map[cpu];
1340 return id;
1341}
1342
1343static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1344 struct perf_cpu_map *map, int idx)
1345{
1346 return perf_stat__get_aggr(config, perf_stat__get_socket, map, idx);
1347}
1348
1349static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1350 struct perf_cpu_map *map, int idx)
1351{
1352 return perf_stat__get_aggr(config, perf_stat__get_die, map, idx);
1353}
1354
1355static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1356 struct perf_cpu_map *map, int idx)
1357{
1358 return perf_stat__get_aggr(config, perf_stat__get_core, map, idx);
1359}
1360
1361static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1362 struct perf_cpu_map *map, int idx)
1363{
1364 return perf_stat__get_aggr(config, perf_stat__get_node, map, idx);
1365}
1366
1367static bool term_percore_set(void)
1368{
1369 struct evsel *counter;
1370
1371 evlist__for_each_entry(evsel_list, counter) {
1372 if (counter->percore)
1373 return true;
1374 }
1375
1376 return false;
1377}
1378
1379static int perf_stat_init_aggr_mode(void)
1380{
1381 int nr;
1382
1383 switch (stat_config.aggr_mode) {
1384 case AGGR_SOCKET:
1385 if (cpu_map__build_socket_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1386 perror("cannot build socket map");
1387 return -1;
1388 }
1389 stat_config.aggr_get_id = perf_stat__get_socket_cached;
1390 break;
1391 case AGGR_DIE:
1392 if (cpu_map__build_die_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1393 perror("cannot build die map");
1394 return -1;
1395 }
1396 stat_config.aggr_get_id = perf_stat__get_die_cached;
1397 break;
1398 case AGGR_CORE:
1399 if (cpu_map__build_core_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1400 perror("cannot build core map");
1401 return -1;
1402 }
1403 stat_config.aggr_get_id = perf_stat__get_core_cached;
1404 break;
1405 case AGGR_NODE:
1406 if (cpu_map__build_node_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1407 perror("cannot build core map");
1408 return -1;
1409 }
1410 stat_config.aggr_get_id = perf_stat__get_node_cached;
1411 break;
1412 case AGGR_NONE:
1413 if (term_percore_set()) {
1414 if (cpu_map__build_core_map(evsel_list->core.cpus,
1415 &stat_config.aggr_map)) {
1416 perror("cannot build core map");
1417 return -1;
1418 }
1419 stat_config.aggr_get_id = perf_stat__get_core_cached;
1420 }
1421 break;
1422 case AGGR_GLOBAL:
1423 case AGGR_THREAD:
1424 case AGGR_UNSET:
1425 default:
1426 break;
1427 }
1428
1429
1430
1431
1432
1433
1434 nr = perf_cpu_map__max(evsel_list->core.cpus);
1435 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1436 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1437}
1438
1439static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1440{
1441 if (map) {
1442 WARN_ONCE(refcount_read(&map->refcnt) != 0,
1443 "cpu_aggr_map refcnt unbalanced\n");
1444 free(map);
1445 }
1446}
1447
1448static void cpu_aggr_map__put(struct cpu_aggr_map *map)
1449{
1450 if (map && refcount_dec_and_test(&map->refcnt))
1451 cpu_aggr_map__delete(map);
1452}
1453
1454static void perf_stat__exit_aggr_mode(void)
1455{
1456 cpu_aggr_map__put(stat_config.aggr_map);
1457 cpu_aggr_map__put(stat_config.cpus_aggr_map);
1458 stat_config.aggr_map = NULL;
1459 stat_config.cpus_aggr_map = NULL;
1460}
1461
1462static inline int perf_env__get_cpu(struct perf_env *env, struct perf_cpu_map *map, int idx)
1463{
1464 int cpu;
1465
1466 if (idx > map->nr)
1467 return -1;
1468
1469 cpu = map->map[idx];
1470
1471 if (cpu >= env->nr_cpus_avail)
1472 return -1;
1473
1474 return cpu;
1475}
1476
1477static struct aggr_cpu_id perf_env__get_socket(struct perf_cpu_map *map, int idx, void *data)
1478{
1479 struct perf_env *env = data;
1480 int cpu = perf_env__get_cpu(env, map, idx);
1481 struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1482
1483 if (cpu != -1)
1484 id.socket = env->cpu[cpu].socket_id;
1485
1486 return id;
1487}
1488
1489static struct aggr_cpu_id perf_env__get_die(struct perf_cpu_map *map, int idx, void *data)
1490{
1491 struct perf_env *env = data;
1492 struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1493 int cpu = perf_env__get_cpu(env, map, idx);
1494
1495 if (cpu != -1) {
1496
1497
1498
1499
1500
1501 id.socket = env->cpu[cpu].socket_id;
1502 id.die = env->cpu[cpu].die_id;
1503 }
1504
1505 return id;
1506}
1507
1508static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx, void *data)
1509{
1510 struct perf_env *env = data;
1511 struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1512 int cpu = perf_env__get_cpu(env, map, idx);
1513
1514 if (cpu != -1) {
1515
1516
1517
1518
1519
1520 id.socket = env->cpu[cpu].socket_id;
1521 id.die = env->cpu[cpu].die_id;
1522 id.core = env->cpu[cpu].core_id;
1523 }
1524
1525 return id;
1526}
1527
1528static struct aggr_cpu_id perf_env__get_node(struct perf_cpu_map *map, int idx, void *data)
1529{
1530 int cpu = perf_env__get_cpu(data, map, idx);
1531 struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1532
1533 id.node = perf_env__numa_node(data, cpu);
1534 return id;
1535}
1536
1537static int perf_env__build_socket_map(struct perf_env *env, struct perf_cpu_map *cpus,
1538 struct cpu_aggr_map **sockp)
1539{
1540 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1541}
1542
1543static int perf_env__build_die_map(struct perf_env *env, struct perf_cpu_map *cpus,
1544 struct cpu_aggr_map **diep)
1545{
1546 return cpu_map__build_map(cpus, diep, perf_env__get_die, env);
1547}
1548
1549static int perf_env__build_core_map(struct perf_env *env, struct perf_cpu_map *cpus,
1550 struct cpu_aggr_map **corep)
1551{
1552 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1553}
1554
1555static int perf_env__build_node_map(struct perf_env *env, struct perf_cpu_map *cpus,
1556 struct cpu_aggr_map **nodep)
1557{
1558 return cpu_map__build_map(cpus, nodep, perf_env__get_node, env);
1559}
1560
1561static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1562 struct perf_cpu_map *map, int idx)
1563{
1564 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1565}
1566static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1567 struct perf_cpu_map *map, int idx)
1568{
1569 return perf_env__get_die(map, idx, &perf_stat.session->header.env);
1570}
1571
1572static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1573 struct perf_cpu_map *map, int idx)
1574{
1575 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1576}
1577
1578static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1579 struct perf_cpu_map *map, int idx)
1580{
1581 return perf_env__get_node(map, idx, &perf_stat.session->header.env);
1582}
1583
1584static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1585{
1586 struct perf_env *env = &st->session->header.env;
1587
1588 switch (stat_config.aggr_mode) {
1589 case AGGR_SOCKET:
1590 if (perf_env__build_socket_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1591 perror("cannot build socket map");
1592 return -1;
1593 }
1594 stat_config.aggr_get_id = perf_stat__get_socket_file;
1595 break;
1596 case AGGR_DIE:
1597 if (perf_env__build_die_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1598 perror("cannot build die map");
1599 return -1;
1600 }
1601 stat_config.aggr_get_id = perf_stat__get_die_file;
1602 break;
1603 case AGGR_CORE:
1604 if (perf_env__build_core_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1605 perror("cannot build core map");
1606 return -1;
1607 }
1608 stat_config.aggr_get_id = perf_stat__get_core_file;
1609 break;
1610 case AGGR_NODE:
1611 if (perf_env__build_node_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1612 perror("cannot build core map");
1613 return -1;
1614 }
1615 stat_config.aggr_get_id = perf_stat__get_node_file;
1616 break;
1617 case AGGR_NONE:
1618 case AGGR_GLOBAL:
1619 case AGGR_THREAD:
1620 case AGGR_UNSET:
1621 default:
1622 break;
1623 }
1624
1625 return 0;
1626}
1627
1628
1629
1630
1631
1632static int add_default_attributes(void)
1633{
1634 int err;
1635 struct perf_event_attr default_attrs0[] = {
1636
1637 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1638 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1639 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1640 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1641
1642 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1643};
1644 struct perf_event_attr frontend_attrs[] = {
1645 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1646};
1647 struct perf_event_attr backend_attrs[] = {
1648 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1649};
1650 struct perf_event_attr default_attrs1[] = {
1651 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1652 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1653 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1654
1655};
1656 struct perf_event_attr default_sw_attrs[] = {
1657 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1658 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1659 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1660 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1661};
1662
1663
1664
1665
1666 struct perf_event_attr detailed_attrs[] = {
1667
1668 { .type = PERF_TYPE_HW_CACHE,
1669 .config =
1670 PERF_COUNT_HW_CACHE_L1D << 0 |
1671 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1672 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1673
1674 { .type = PERF_TYPE_HW_CACHE,
1675 .config =
1676 PERF_COUNT_HW_CACHE_L1D << 0 |
1677 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1678 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1679
1680 { .type = PERF_TYPE_HW_CACHE,
1681 .config =
1682 PERF_COUNT_HW_CACHE_LL << 0 |
1683 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1684 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1685
1686 { .type = PERF_TYPE_HW_CACHE,
1687 .config =
1688 PERF_COUNT_HW_CACHE_LL << 0 |
1689 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1690 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1691};
1692
1693
1694
1695
1696 struct perf_event_attr very_detailed_attrs[] = {
1697
1698 { .type = PERF_TYPE_HW_CACHE,
1699 .config =
1700 PERF_COUNT_HW_CACHE_L1I << 0 |
1701 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1702 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1703
1704 { .type = PERF_TYPE_HW_CACHE,
1705 .config =
1706 PERF_COUNT_HW_CACHE_L1I << 0 |
1707 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1708 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1709
1710 { .type = PERF_TYPE_HW_CACHE,
1711 .config =
1712 PERF_COUNT_HW_CACHE_DTLB << 0 |
1713 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1714 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1715
1716 { .type = PERF_TYPE_HW_CACHE,
1717 .config =
1718 PERF_COUNT_HW_CACHE_DTLB << 0 |
1719 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1720 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1721
1722 { .type = PERF_TYPE_HW_CACHE,
1723 .config =
1724 PERF_COUNT_HW_CACHE_ITLB << 0 |
1725 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1726 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1727
1728 { .type = PERF_TYPE_HW_CACHE,
1729 .config =
1730 PERF_COUNT_HW_CACHE_ITLB << 0 |
1731 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1732 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1733
1734};
1735
1736
1737
1738
1739 struct perf_event_attr very_very_detailed_attrs[] = {
1740
1741 { .type = PERF_TYPE_HW_CACHE,
1742 .config =
1743 PERF_COUNT_HW_CACHE_L1D << 0 |
1744 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1745 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1746
1747 { .type = PERF_TYPE_HW_CACHE,
1748 .config =
1749 PERF_COUNT_HW_CACHE_L1D << 0 |
1750 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1751 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1752};
1753 struct parse_events_error errinfo;
1754
1755
1756 if (stat_config.null_run)
1757 return 0;
1758
1759 bzero(&errinfo, sizeof(errinfo));
1760 if (transaction_run) {
1761
1762
1763
1764
1765
1766 if (metricgroup__has_metric("transaction")) {
1767 struct option opt = { .value = &evsel_list };
1768
1769 return metricgroup__parse_groups(&opt, "transaction",
1770 stat_config.metric_no_group,
1771 stat_config.metric_no_merge,
1772 &stat_config.metric_events);
1773 }
1774
1775 if (pmu_have_event("cpu", "cycles-ct") &&
1776 pmu_have_event("cpu", "el-start"))
1777 err = parse_events(evsel_list, transaction_attrs,
1778 &errinfo);
1779 else
1780 err = parse_events(evsel_list,
1781 transaction_limited_attrs,
1782 &errinfo);
1783 if (err) {
1784 fprintf(stderr, "Cannot set up transaction events\n");
1785 parse_events_print_error(&errinfo, transaction_attrs);
1786 return -1;
1787 }
1788 return 0;
1789 }
1790
1791 if (smi_cost) {
1792 int smi;
1793
1794 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1795 fprintf(stderr, "freeze_on_smi is not supported.\n");
1796 return -1;
1797 }
1798
1799 if (!smi) {
1800 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1801 fprintf(stderr, "Failed to set freeze_on_smi.\n");
1802 return -1;
1803 }
1804 smi_reset = true;
1805 }
1806
1807 if (pmu_have_event("msr", "aperf") &&
1808 pmu_have_event("msr", "smi")) {
1809 if (!force_metric_only)
1810 stat_config.metric_only = true;
1811 err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
1812 } else {
1813 fprintf(stderr, "To measure SMI cost, it needs "
1814 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
1815 parse_events_print_error(&errinfo, smi_cost_attrs);
1816 return -1;
1817 }
1818 if (err) {
1819 parse_events_print_error(&errinfo, smi_cost_attrs);
1820 fprintf(stderr, "Cannot set up SMI cost events\n");
1821 return -1;
1822 }
1823 return 0;
1824 }
1825
1826 if (topdown_run) {
1827 const char **metric_attrs = topdown_metric_attrs;
1828 unsigned int max_level = 1;
1829 char *str = NULL;
1830 bool warn = false;
1831
1832 if (!force_metric_only)
1833 stat_config.metric_only = true;
1834
1835 if (pmu_have_event("cpu", topdown_metric_L2_attrs[5])) {
1836 metric_attrs = topdown_metric_L2_attrs;
1837 max_level = 2;
1838 }
1839
1840 if (stat_config.topdown_level > max_level) {
1841 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
1842 return -1;
1843 } else if (!stat_config.topdown_level)
1844 stat_config.topdown_level = max_level;
1845
1846 if (topdown_filter_events(metric_attrs, &str, 1) < 0) {
1847 pr_err("Out of memory\n");
1848 return -1;
1849 }
1850 if (metric_attrs[0] && str) {
1851 if (!stat_config.interval && !stat_config.metric_only) {
1852 fprintf(stat_config.output,
1853 "Topdown accuracy may decrease when measuring long periods.\n"
1854 "Please print the result regularly, e.g. -I1000\n");
1855 }
1856 goto setup_metrics;
1857 }
1858
1859 zfree(&str);
1860
1861 if (stat_config.aggr_mode != AGGR_GLOBAL &&
1862 stat_config.aggr_mode != AGGR_CORE) {
1863 pr_err("top down event configuration requires --per-core mode\n");
1864 return -1;
1865 }
1866 stat_config.aggr_mode = AGGR_CORE;
1867 if (nr_cgroups || !target__has_cpu(&target)) {
1868 pr_err("top down event configuration requires system-wide mode (-a)\n");
1869 return -1;
1870 }
1871
1872 if (topdown_filter_events(topdown_attrs, &str,
1873 arch_topdown_check_group(&warn)) < 0) {
1874 pr_err("Out of memory\n");
1875 return -1;
1876 }
1877 if (topdown_attrs[0] && str) {
1878 if (warn)
1879 arch_topdown_group_warn();
1880setup_metrics:
1881 err = parse_events(evsel_list, str, &errinfo);
1882 if (err) {
1883 fprintf(stderr,
1884 "Cannot set up top down events %s: %d\n",
1885 str, err);
1886 parse_events_print_error(&errinfo, str);
1887 free(str);
1888 return -1;
1889 }
1890 } else {
1891 fprintf(stderr, "System does not support topdown\n");
1892 return -1;
1893 }
1894 free(str);
1895 }
1896
1897 if (!evsel_list->core.nr_entries) {
1898 if (perf_pmu__has_hybrid()) {
1899 const char *hybrid_str = "cycles,instructions,branches,branch-misses";
1900
1901 if (target__has_cpu(&target))
1902 default_sw_attrs[0].config = PERF_COUNT_SW_CPU_CLOCK;
1903
1904 if (evlist__add_default_attrs(evsel_list,
1905 default_sw_attrs) < 0) {
1906 return -1;
1907 }
1908
1909 err = parse_events(evsel_list, hybrid_str, &errinfo);
1910 if (err) {
1911 fprintf(stderr,
1912 "Cannot set up hybrid events %s: %d\n",
1913 hybrid_str, err);
1914 parse_events_print_error(&errinfo, hybrid_str);
1915 return -1;
1916 }
1917 return err;
1918 }
1919
1920 if (target__has_cpu(&target))
1921 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
1922
1923 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
1924 return -1;
1925 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
1926 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
1927 return -1;
1928 }
1929 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
1930 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)
1931 return -1;
1932 }
1933 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
1934 return -1;
1935
1936 stat_config.topdown_level = TOPDOWN_MAX_LEVEL;
1937 if (arch_evlist__add_default_attrs(evsel_list) < 0)
1938 return -1;
1939 }
1940
1941
1942
1943 if (detailed_run < 1)
1944 return 0;
1945
1946
1947 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1948 return -1;
1949
1950 if (detailed_run < 2)
1951 return 0;
1952
1953
1954 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1955 return -1;
1956
1957 if (detailed_run < 3)
1958 return 0;
1959
1960
1961 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1962}
1963
1964static const char * const stat_record_usage[] = {
1965 "perf stat record [<options>]",
1966 NULL,
1967};
1968
1969static void init_features(struct perf_session *session)
1970{
1971 int feat;
1972
1973 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
1974 perf_header__set_feat(&session->header, feat);
1975
1976 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
1977 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
1978 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
1979 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
1980 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
1981}
1982
1983static int __cmd_record(int argc, const char **argv)
1984{
1985 struct perf_session *session;
1986 struct perf_data *data = &perf_stat.data;
1987
1988 argc = parse_options(argc, argv, stat_options, stat_record_usage,
1989 PARSE_OPT_STOP_AT_NON_OPTION);
1990
1991 if (output_name)
1992 data->path = output_name;
1993
1994 if (stat_config.run_count != 1 || forever) {
1995 pr_err("Cannot use -r option with perf stat record.\n");
1996 return -1;
1997 }
1998
1999 session = perf_session__new(data, NULL);
2000 if (IS_ERR(session)) {
2001 pr_err("Perf session creation failed\n");
2002 return PTR_ERR(session);
2003 }
2004
2005 init_features(session);
2006
2007 session->evlist = evsel_list;
2008 perf_stat.session = session;
2009 perf_stat.record = true;
2010 return argc;
2011}
2012
2013static int process_stat_round_event(struct perf_session *session,
2014 union perf_event *event)
2015{
2016 struct perf_record_stat_round *stat_round = &event->stat_round;
2017 struct evsel *counter;
2018 struct timespec tsh, *ts = NULL;
2019 const char **argv = session->header.env.cmdline_argv;
2020 int argc = session->header.env.nr_cmdline;
2021
2022 evlist__for_each_entry(evsel_list, counter)
2023 perf_stat_process_counter(&stat_config, counter);
2024
2025 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2026 update_stats(&walltime_nsecs_stats, stat_round->time);
2027
2028 if (stat_config.interval && stat_round->time) {
2029 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2030 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2031 ts = &tsh;
2032 }
2033
2034 print_counters(ts, argc, argv);
2035 return 0;
2036}
2037
2038static
2039int process_stat_config_event(struct perf_session *session,
2040 union perf_event *event)
2041{
2042 struct perf_tool *tool = session->tool;
2043 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2044
2045 perf_event__read_stat_config(&stat_config, &event->stat_config);
2046
2047 if (perf_cpu_map__empty(st->cpus)) {
2048 if (st->aggr_mode != AGGR_UNSET)
2049 pr_warning("warning: processing task data, aggregation mode not set\n");
2050 return 0;
2051 }
2052
2053 if (st->aggr_mode != AGGR_UNSET)
2054 stat_config.aggr_mode = st->aggr_mode;
2055
2056 if (perf_stat.data.is_pipe)
2057 perf_stat_init_aggr_mode();
2058 else
2059 perf_stat_init_aggr_mode_file(st);
2060
2061 return 0;
2062}
2063
2064static int set_maps(struct perf_stat *st)
2065{
2066 if (!st->cpus || !st->threads)
2067 return 0;
2068
2069 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2070 return -EINVAL;
2071
2072 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2073
2074 if (evlist__alloc_stats(evsel_list, true))
2075 return -ENOMEM;
2076
2077 st->maps_allocated = true;
2078 return 0;
2079}
2080
2081static
2082int process_thread_map_event(struct perf_session *session,
2083 union perf_event *event)
2084{
2085 struct perf_tool *tool = session->tool;
2086 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2087
2088 if (st->threads) {
2089 pr_warning("Extra thread map event, ignoring.\n");
2090 return 0;
2091 }
2092
2093 st->threads = thread_map__new_event(&event->thread_map);
2094 if (!st->threads)
2095 return -ENOMEM;
2096
2097 return set_maps(st);
2098}
2099
2100static
2101int process_cpu_map_event(struct perf_session *session,
2102 union perf_event *event)
2103{
2104 struct perf_tool *tool = session->tool;
2105 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2106 struct perf_cpu_map *cpus;
2107
2108 if (st->cpus) {
2109 pr_warning("Extra cpu map event, ignoring.\n");
2110 return 0;
2111 }
2112
2113 cpus = cpu_map__new_data(&event->cpu_map.data);
2114 if (!cpus)
2115 return -ENOMEM;
2116
2117 st->cpus = cpus;
2118 return set_maps(st);
2119}
2120
2121static const char * const stat_report_usage[] = {
2122 "perf stat report [<options>]",
2123 NULL,
2124};
2125
2126static struct perf_stat perf_stat = {
2127 .tool = {
2128 .attr = perf_event__process_attr,
2129 .event_update = perf_event__process_event_update,
2130 .thread_map = process_thread_map_event,
2131 .cpu_map = process_cpu_map_event,
2132 .stat_config = process_stat_config_event,
2133 .stat = perf_event__process_stat_event,
2134 .stat_round = process_stat_round_event,
2135 },
2136 .aggr_mode = AGGR_UNSET,
2137};
2138
2139static int __cmd_report(int argc, const char **argv)
2140{
2141 struct perf_session *session;
2142 const struct option options[] = {
2143 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2144 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2145 "aggregate counts per processor socket", AGGR_SOCKET),
2146 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2147 "aggregate counts per processor die", AGGR_DIE),
2148 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2149 "aggregate counts per physical processor core", AGGR_CORE),
2150 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2151 "aggregate counts per numa node", AGGR_NODE),
2152 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2153 "disable CPU count aggregation", AGGR_NONE),
2154 OPT_END()
2155 };
2156 struct stat st;
2157 int ret;
2158
2159 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2160
2161 if (!input_name || !strlen(input_name)) {
2162 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2163 input_name = "-";
2164 else
2165 input_name = "perf.data";
2166 }
2167
2168 perf_stat.data.path = input_name;
2169 perf_stat.data.mode = PERF_DATA_MODE_READ;
2170
2171 session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2172 if (IS_ERR(session))
2173 return PTR_ERR(session);
2174
2175 perf_stat.session = session;
2176 stat_config.output = stderr;
2177 evsel_list = session->evlist;
2178
2179 ret = perf_session__process_events(session);
2180 if (ret)
2181 return ret;
2182
2183 perf_session__delete(session);
2184 return 0;
2185}
2186
2187static void setup_system_wide(int forks)
2188{
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198 if (!target__none(&target))
2199 return;
2200
2201 if (!forks)
2202 target.system_wide = true;
2203 else {
2204 struct evsel *counter;
2205
2206 evlist__for_each_entry(evsel_list, counter) {
2207 if (!counter->core.system_wide &&
2208 strcmp(counter->name, "duration_time")) {
2209 return;
2210 }
2211 }
2212
2213 if (evsel_list->core.nr_entries)
2214 target.system_wide = true;
2215 }
2216}
2217
2218int cmd_stat(int argc, const char **argv)
2219{
2220 const char * const stat_usage[] = {
2221 "perf stat [<options>] [<command>]",
2222 NULL
2223 };
2224 int status = -EINVAL, run_idx, err;
2225 const char *mode;
2226 FILE *output = stderr;
2227 unsigned int interval, timeout;
2228 const char * const stat_subcommands[] = { "record", "report" };
2229 char errbuf[BUFSIZ];
2230
2231 setlocale(LC_ALL, "");
2232
2233 evsel_list = evlist__new();
2234 if (evsel_list == NULL)
2235 return -ENOMEM;
2236
2237 parse_events__shrink_config_terms();
2238
2239
2240 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2241 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2242 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2243
2244 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2245 (const char **) stat_usage,
2246 PARSE_OPT_STOP_AT_NON_OPTION);
2247 perf_stat__collect_metric_expr(evsel_list);
2248 perf_stat__init_shadow_stats();
2249
2250 if (stat_config.csv_sep) {
2251 stat_config.csv_output = true;
2252 if (!strcmp(stat_config.csv_sep, "\\t"))
2253 stat_config.csv_sep = "\t";
2254 } else
2255 stat_config.csv_sep = DEFAULT_SEPARATOR;
2256
2257 if (argc && !strncmp(argv[0], "rec", 3)) {
2258 argc = __cmd_record(argc, argv);
2259 if (argc < 0)
2260 return -1;
2261 } else if (argc && !strncmp(argv[0], "rep", 3))
2262 return __cmd_report(argc, argv);
2263
2264 interval = stat_config.interval;
2265 timeout = stat_config.timeout;
2266
2267
2268
2269
2270 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2271 output = NULL;
2272
2273 if (output_name && output_fd) {
2274 fprintf(stderr, "cannot use both --output and --log-fd\n");
2275 parse_options_usage(stat_usage, stat_options, "o", 1);
2276 parse_options_usage(NULL, stat_options, "log-fd", 0);
2277 goto out;
2278 }
2279
2280 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2281 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2282 goto out;
2283 }
2284
2285 if (stat_config.metric_only && stat_config.run_count > 1) {
2286 fprintf(stderr, "--metric-only is not supported with -r\n");
2287 goto out;
2288 }
2289
2290 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2291 fprintf(stderr, "--table is only supported with -r\n");
2292 parse_options_usage(stat_usage, stat_options, "r", 1);
2293 parse_options_usage(NULL, stat_options, "table", 0);
2294 goto out;
2295 }
2296
2297 if (output_fd < 0) {
2298 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2299 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2300 goto out;
2301 }
2302
2303 if (!output && !stat_config.quiet) {
2304 struct timespec tm;
2305 mode = append_file ? "a" : "w";
2306
2307 output = fopen(output_name, mode);
2308 if (!output) {
2309 perror("failed to create output file");
2310 return -1;
2311 }
2312 clock_gettime(CLOCK_REALTIME, &tm);
2313 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2314 } else if (output_fd > 0) {
2315 mode = append_file ? "a" : "w";
2316 output = fdopen(output_fd, mode);
2317 if (!output) {
2318 perror("Failed opening logfd");
2319 return -errno;
2320 }
2321 }
2322
2323 stat_config.output = output;
2324
2325
2326
2327
2328 if (stat_config.csv_output) {
2329
2330 if (big_num_opt == 1) {
2331 fprintf(stderr, "-B option not supported with -x\n");
2332 parse_options_usage(stat_usage, stat_options, "B", 1);
2333 parse_options_usage(NULL, stat_options, "x", 1);
2334 goto out;
2335 } else
2336 stat_config.big_num = false;
2337 } else if (big_num_opt == 0)
2338 stat_config.big_num = false;
2339
2340 err = target__validate(&target);
2341 if (err) {
2342 target__strerror(&target, err, errbuf, BUFSIZ);
2343 pr_warning("%s\n", errbuf);
2344 }
2345
2346 setup_system_wide(argc);
2347
2348
2349
2350
2351
2352 if ((stat_config.run_count == 1) && target__none(&target))
2353 stat_config.ru_display = true;
2354
2355 if (stat_config.run_count < 0) {
2356 pr_err("Run count must be a positive number\n");
2357 parse_options_usage(stat_usage, stat_options, "r", 1);
2358 goto out;
2359 } else if (stat_config.run_count == 0) {
2360 forever = true;
2361 stat_config.run_count = 1;
2362 }
2363
2364 if (stat_config.walltime_run_table) {
2365 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2366 if (!stat_config.walltime_run) {
2367 pr_err("failed to setup -r option");
2368 goto out;
2369 }
2370 }
2371
2372 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2373 !target__has_task(&target)) {
2374 if (!target.system_wide || target.cpu_list) {
2375 fprintf(stderr, "The --per-thread option is only "
2376 "available when monitoring via -p -t -a "
2377 "options or only --per-thread.\n");
2378 parse_options_usage(NULL, stat_options, "p", 1);
2379 parse_options_usage(NULL, stat_options, "t", 1);
2380 goto out;
2381 }
2382 }
2383
2384
2385
2386
2387
2388 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2389 stat_config.aggr_mode != AGGR_THREAD) ||
2390 (nr_cgroups || stat_config.cgroup_list)) &&
2391 !target__has_cpu(&target)) {
2392 fprintf(stderr, "both cgroup and no-aggregation "
2393 "modes only available in system-wide mode\n");
2394
2395 parse_options_usage(stat_usage, stat_options, "G", 1);
2396 parse_options_usage(NULL, stat_options, "A", 1);
2397 parse_options_usage(NULL, stat_options, "a", 1);
2398 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2399 goto out;
2400 }
2401
2402 if (stat_config.iostat_run) {
2403 status = iostat_prepare(evsel_list, &stat_config);
2404 if (status)
2405 goto out;
2406 if (iostat_mode == IOSTAT_LIST) {
2407 iostat_list(evsel_list, &stat_config);
2408 goto out;
2409 } else if (verbose)
2410 iostat_list(evsel_list, &stat_config);
2411 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2412 target.system_wide = true;
2413 }
2414
2415 if (add_default_attributes())
2416 goto out;
2417
2418 if (stat_config.cgroup_list) {
2419 if (nr_cgroups > 0) {
2420 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2421 parse_options_usage(stat_usage, stat_options, "G", 1);
2422 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2423 goto out;
2424 }
2425
2426 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2427 &stat_config.metric_events, true) < 0) {
2428 parse_options_usage(stat_usage, stat_options,
2429 "for-each-cgroup", 0);
2430 goto out;
2431 }
2432 }
2433
2434 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2435 target.per_thread = true;
2436
2437 if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) {
2438 pr_err("failed to use cpu list %s\n", target.cpu_list);
2439 goto out;
2440 }
2441
2442 target.hybrid = perf_pmu__has_hybrid();
2443 if (evlist__create_maps(evsel_list, &target) < 0) {
2444 if (target__has_task(&target)) {
2445 pr_err("Problems finding threads of monitor\n");
2446 parse_options_usage(stat_usage, stat_options, "p", 1);
2447 parse_options_usage(NULL, stat_options, "t", 1);
2448 } else if (target__has_cpu(&target)) {
2449 perror("failed to parse CPUs map");
2450 parse_options_usage(stat_usage, stat_options, "C", 1);
2451 parse_options_usage(NULL, stat_options, "a", 1);
2452 }
2453 goto out;
2454 }
2455
2456 evlist__check_cpu_maps(evsel_list);
2457
2458
2459
2460
2461
2462 if (stat_config.aggr_mode == AGGR_THREAD) {
2463 thread_map__read_comms(evsel_list->core.threads);
2464 if (target.system_wide) {
2465 if (runtime_stat_new(&stat_config,
2466 perf_thread_map__nr(evsel_list->core.threads))) {
2467 goto out;
2468 }
2469 }
2470 }
2471
2472 if (stat_config.aggr_mode == AGGR_NODE)
2473 cpu__setup_cpunode_map();
2474
2475 if (stat_config.times && interval)
2476 interval_count = true;
2477 else if (stat_config.times && !interval) {
2478 pr_err("interval-count option should be used together with "
2479 "interval-print.\n");
2480 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2481 parse_options_usage(stat_usage, stat_options, "I", 1);
2482 goto out;
2483 }
2484
2485 if (timeout && timeout < 100) {
2486 if (timeout < 10) {
2487 pr_err("timeout must be >= 10ms.\n");
2488 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2489 goto out;
2490 } else
2491 pr_warning("timeout < 100ms. "
2492 "The overhead percentage could be high in some cases. "
2493 "Please proceed with caution.\n");
2494 }
2495 if (timeout && interval) {
2496 pr_err("timeout option is not supported with interval-print.\n");
2497 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2498 parse_options_usage(stat_usage, stat_options, "I", 1);
2499 goto out;
2500 }
2501
2502 if (evlist__alloc_stats(evsel_list, interval))
2503 goto out;
2504
2505 if (perf_stat_init_aggr_mode())
2506 goto out;
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2518
2519
2520
2521
2522
2523
2524
2525 atexit(sig_atexit);
2526 if (!forever)
2527 signal(SIGINT, skip_signal);
2528 signal(SIGCHLD, skip_signal);
2529 signal(SIGALRM, skip_signal);
2530 signal(SIGABRT, skip_signal);
2531
2532 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2533 goto out;
2534
2535 status = 0;
2536 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2537 if (stat_config.run_count != 1 && verbose > 0)
2538 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2539 run_idx + 1);
2540
2541 if (run_idx != 0)
2542 evlist__reset_prev_raw_counts(evsel_list);
2543
2544 status = run_perf_stat(argc, argv, run_idx);
2545 if (forever && status != -1 && !interval) {
2546 print_counters(NULL, argc, argv);
2547 perf_stat__reset_stats();
2548 }
2549 }
2550
2551 if (!forever && status != -1 && (!interval || stat_config.summary))
2552 print_counters(NULL, argc, argv);
2553
2554 evlist__finalize_ctlfd(evsel_list);
2555
2556 if (STAT_RECORD) {
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569 int fd = perf_data__fd(&perf_stat.data);
2570
2571 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2572 process_synthesized_event,
2573 &perf_stat.session->machines.host);
2574 if (err) {
2575 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2576 "older tools may produce warnings about this file\n.");
2577 }
2578
2579 if (!interval) {
2580 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2581 pr_err("failed to write stat round event\n");
2582 }
2583
2584 if (!perf_stat.data.is_pipe) {
2585 perf_stat.session->header.data_size += perf_stat.bytes_written;
2586 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2587 }
2588
2589 evlist__close(evsel_list);
2590 perf_session__delete(perf_stat.session);
2591 }
2592
2593 perf_stat__exit_aggr_mode();
2594 evlist__free_stats(evsel_list);
2595out:
2596 if (stat_config.iostat_run)
2597 iostat_release(evsel_list);
2598
2599 zfree(&stat_config.walltime_run);
2600
2601 if (smi_cost && smi_reset)
2602 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2603
2604 evlist__delete(evsel_list);
2605
2606 metricgroup__rblist_exit(&stat_config.metric_events);
2607 runtime_stat_delete(&stat_config);
2608 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2609
2610 return status;
2611}
2612