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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * builtin-stat.c
4 *
5 * Builtin stat command: Give a precise performance counters summary
6 * overview about any workload, CPU or specific PID.
7 *
8 * Sample output:
9
10 $ perf stat ./hackbench 10
11
12 Time: 0.118
13
14 Performance counter stats for './hackbench 10':
15
16 1708.761321 task-clock # 11.037 CPUs utilized
17 41,190 context-switches # 0.024 M/sec
18 6,735 CPU-migrations # 0.004 M/sec
19 17,318 page-faults # 0.010 M/sec
20 5,205,202,243 cycles # 3.046 GHz
21 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
22 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
23 2,603,501,247 instructions # 0.50 insns per cycle
24 # 1.48 stalled cycles per insn
25 484,357,498 branches # 283.455 M/sec
26 6,388,934 branch-misses # 1.32% of all branches
27
28 0.154822978 seconds time elapsed
29
30 *
31 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
32 *
33 * Improvements and fixes by:
34 *
35 * Arjan van de Ven <arjan@linux.intel.com>
36 * Yanmin Zhang <yanmin.zhang@intel.com>
37 * Wu Fengguang <fengguang.wu@intel.com>
38 * Mike Galbraith <efault@gmx.de>
39 * Paul Mackerras <paulus@samba.org>
40 * Jaswinder Singh Rajput <jaswinder@kernel.org>
41 */
42
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#include <internal/threadmap.h>
97
98#define DEFAULT_SEPARATOR " "
99#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
100
101static void print_counters(struct timespec *ts, int argc, const char **argv);
102
103/* Default events used for perf stat -T */
104static const char *transaction_attrs = {
105 "task-clock,"
106 "{"
107 "instructions,"
108 "cycles,"
109 "cpu/cycles-t/,"
110 "cpu/tx-start/,"
111 "cpu/el-start/,"
112 "cpu/cycles-ct/"
113 "}"
114};
115
116/* More limited version when the CPU does not have all events. */
117static const char * transaction_limited_attrs = {
118 "task-clock,"
119 "{"
120 "instructions,"
121 "cycles,"
122 "cpu/cycles-t/,"
123 "cpu/tx-start/"
124 "}"
125};
126
127static const char * topdown_attrs[] = {
128 "topdown-total-slots",
129 "topdown-slots-retired",
130 "topdown-recovery-bubbles",
131 "topdown-fetch-bubbles",
132 "topdown-slots-issued",
133 NULL,
134};
135
136static const char *topdown_metric_attrs[] = {
137 "slots",
138 "topdown-retiring",
139 "topdown-bad-spec",
140 "topdown-fe-bound",
141 "topdown-be-bound",
142 NULL,
143};
144
145static const char *topdown_metric_L2_attrs[] = {
146 "slots",
147 "topdown-retiring",
148 "topdown-bad-spec",
149 "topdown-fe-bound",
150 "topdown-be-bound",
151 "topdown-heavy-ops",
152 "topdown-br-mispredict",
153 "topdown-fetch-lat",
154 "topdown-mem-bound",
155 NULL,
156};
157
158#define TOPDOWN_MAX_LEVEL 2
159
160static const char *smi_cost_attrs = {
161 "{"
162 "msr/aperf/,"
163 "msr/smi/,"
164 "cycles"
165 "}"
166};
167
168static struct evlist *evsel_list;
169static bool all_counters_use_bpf = true;
170
171static struct target target = {
172 .uid = UINT_MAX,
173};
174
175#define METRIC_ONLY_LEN 20
176
177static volatile sig_atomic_t child_pid = -1;
178static int detailed_run = 0;
179static bool transaction_run;
180static bool topdown_run = false;
181static bool smi_cost = false;
182static bool smi_reset = false;
183static int big_num_opt = -1;
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;
194static char *metrics;
195
196struct perf_stat {
197 bool record;
198 struct perf_data data;
199 struct perf_session *session;
200 u64 bytes_written;
201 struct perf_tool tool;
202 bool maps_allocated;
203 struct perf_cpu_map *cpus;
204 struct perf_thread_map *threads;
205 enum aggr_mode aggr_mode;
206};
207
208static struct perf_stat perf_stat;
209#define STAT_RECORD perf_stat.record
210
211static volatile sig_atomic_t done = 0;
212
213static struct perf_stat_config stat_config = {
214 .aggr_mode = AGGR_GLOBAL,
215 .scale = true,
216 .unit_width = 4, /* strlen("unit") */
217 .run_count = 1,
218 .metric_only_len = METRIC_ONLY_LEN,
219 .walltime_nsecs_stats = &walltime_nsecs_stats,
220 .ru_stats = &ru_stats,
221 .big_num = true,
222 .ctl_fd = -1,
223 .ctl_fd_ack = -1,
224 .iostat_run = false,
225};
226
227static bool cpus_map_matched(struct evsel *a, struct evsel *b)
228{
229 if (!a->core.cpus && !b->core.cpus)
230 return true;
231
232 if (!a->core.cpus || !b->core.cpus)
233 return false;
234
235 if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus))
236 return false;
237
238 for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) {
239 if (perf_cpu_map__cpu(a->core.cpus, i).cpu !=
240 perf_cpu_map__cpu(b->core.cpus, i).cpu)
241 return false;
242 }
243
244 return true;
245}
246
247static void evlist__check_cpu_maps(struct evlist *evlist)
248{
249 struct evsel *evsel, *pos, *leader;
250 char buf[1024];
251
252 if (evlist__has_hybrid(evlist))
253 evlist__warn_hybrid_group(evlist);
254
255 evlist__for_each_entry(evlist, evsel) {
256 leader = evsel__leader(evsel);
257
258 /* Check that leader matches cpus with each member. */
259 if (leader == evsel)
260 continue;
261 if (cpus_map_matched(leader, evsel))
262 continue;
263
264 /* If there's mismatch disable the group and warn user. */
265 WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n");
266 evsel__group_desc(leader, buf, sizeof(buf));
267 pr_warning(" %s\n", buf);
268
269 if (verbose > 0) {
270 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
271 pr_warning(" %s: %s\n", leader->name, buf);
272 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
273 pr_warning(" %s: %s\n", evsel->name, buf);
274 }
275
276 for_each_group_evsel(pos, leader)
277 evsel__remove_from_group(pos, leader);
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 evlist__reset_stats(evsel_list);
296 perf_stat__reset_shadow_stats();
297}
298
299static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
300 union perf_event *event,
301 struct perf_sample *sample __maybe_unused,
302 struct machine *machine __maybe_unused)
303{
304 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
305 pr_err("failed to write perf data, error: %m\n");
306 return -1;
307 }
308
309 perf_stat.bytes_written += event->header.size;
310 return 0;
311}
312
313static int write_stat_round_event(u64 tm, u64 type)
314{
315 return perf_event__synthesize_stat_round(NULL, tm, type,
316 process_synthesized_event,
317 NULL);
318}
319
320#define WRITE_STAT_ROUND_EVENT(time, interval) \
321 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
322
323#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
324
325static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,
326 struct perf_counts_values *count)
327{
328 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
329 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
330
331 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
332 process_synthesized_event, NULL);
333}
334
335static int read_single_counter(struct evsel *counter, int cpu_map_idx,
336 int thread, struct timespec *rs)
337{
338 switch(counter->tool_event) {
339 case PERF_TOOL_DURATION_TIME: {
340 u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL;
341 struct perf_counts_values *count =
342 perf_counts(counter->counts, cpu_map_idx, thread);
343 count->ena = count->run = val;
344 count->val = val;
345 return 0;
346 }
347 case PERF_TOOL_USER_TIME:
348 case PERF_TOOL_SYSTEM_TIME: {
349 u64 val;
350 struct perf_counts_values *count =
351 perf_counts(counter->counts, cpu_map_idx, thread);
352 if (counter->tool_event == PERF_TOOL_USER_TIME)
353 val = ru_stats.ru_utime_usec_stat.mean;
354 else
355 val = ru_stats.ru_stime_usec_stat.mean;
356 count->ena = count->run = val;
357 count->val = val;
358 return 0;
359 }
360 default:
361 case PERF_TOOL_NONE:
362 return evsel__read_counter(counter, cpu_map_idx, thread);
363 case PERF_TOOL_MAX:
364 /* This should never be reached */
365 return 0;
366 }
367}
368
369/*
370 * Read out the results of a single counter:
371 * do not aggregate counts across CPUs in system-wide mode
372 */
373static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx)
374{
375 int nthreads = perf_thread_map__nr(evsel_list->core.threads);
376 int thread;
377
378 if (!counter->supported)
379 return -ENOENT;
380
381 for (thread = 0; thread < nthreads; thread++) {
382 struct perf_counts_values *count;
383
384 count = perf_counts(counter->counts, cpu_map_idx, thread);
385
386 /*
387 * The leader's group read loads data into its group members
388 * (via evsel__read_counter()) and sets their count->loaded.
389 */
390 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&
391 read_single_counter(counter, cpu_map_idx, thread, rs)) {
392 counter->counts->scaled = -1;
393 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
394 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
395 return -1;
396 }
397
398 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
399
400 if (STAT_RECORD) {
401 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {
402 pr_err("failed to write stat event\n");
403 return -1;
404 }
405 }
406
407 if (verbose > 1) {
408 fprintf(stat_config.output,
409 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
410 evsel__name(counter),
411 perf_cpu_map__cpu(evsel__cpus(counter),
412 cpu_map_idx).cpu,
413 count->val, count->ena, count->run);
414 }
415 }
416
417 return 0;
418}
419
420static int read_affinity_counters(struct timespec *rs)
421{
422 struct evlist_cpu_iterator evlist_cpu_itr;
423 struct affinity saved_affinity, *affinity;
424
425 if (all_counters_use_bpf)
426 return 0;
427
428 if (!target__has_cpu(&target) || target__has_per_thread(&target))
429 affinity = NULL;
430 else if (affinity__setup(&saved_affinity) < 0)
431 return -1;
432 else
433 affinity = &saved_affinity;
434
435 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
436 struct evsel *counter = evlist_cpu_itr.evsel;
437
438 if (evsel__is_bpf(counter))
439 continue;
440
441 if (!counter->err) {
442 counter->err = read_counter_cpu(counter, rs,
443 evlist_cpu_itr.cpu_map_idx);
444 }
445 }
446 if (affinity)
447 affinity__cleanup(&saved_affinity);
448
449 return 0;
450}
451
452static int read_bpf_map_counters(void)
453{
454 struct evsel *counter;
455 int err;
456
457 evlist__for_each_entry(evsel_list, counter) {
458 if (!evsel__is_bpf(counter))
459 continue;
460
461 err = bpf_counter__read(counter);
462 if (err)
463 return err;
464 }
465 return 0;
466}
467
468static int read_counters(struct timespec *rs)
469{
470 if (!stat_config.stop_read_counter) {
471 if (read_bpf_map_counters() ||
472 read_affinity_counters(rs))
473 return -1;
474 }
475 return 0;
476}
477
478static void process_counters(void)
479{
480 struct evsel *counter;
481
482 evlist__for_each_entry(evsel_list, counter) {
483 if (counter->err)
484 pr_debug("failed to read counter %s\n", counter->name);
485 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
486 pr_warning("failed to process counter %s\n", counter->name);
487 counter->err = 0;
488 }
489
490 perf_stat_merge_counters(&stat_config, evsel_list);
491 perf_stat_process_percore(&stat_config, evsel_list);
492 perf_stat_process_shadow_stats(&stat_config, evsel_list);
493}
494
495static void process_interval(void)
496{
497 struct timespec ts, rs;
498
499 clock_gettime(CLOCK_MONOTONIC, &ts);
500 diff_timespec(&rs, &ts, &ref_time);
501
502 perf_stat__reset_shadow_per_stat(&rt_stat);
503 evlist__reset_aggr_stats(evsel_list);
504
505 if (read_counters(&rs) == 0)
506 process_counters();
507
508 if (STAT_RECORD) {
509 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
510 pr_err("failed to write stat round event\n");
511 }
512
513 init_stats(&walltime_nsecs_stats);
514 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
515 print_counters(&rs, 0, NULL);
516}
517
518static bool handle_interval(unsigned int interval, int *times)
519{
520 if (interval) {
521 process_interval();
522 if (interval_count && !(--(*times)))
523 return true;
524 }
525 return false;
526}
527
528static int enable_counters(void)
529{
530 struct evsel *evsel;
531 int err;
532
533 evlist__for_each_entry(evsel_list, evsel) {
534 if (!evsel__is_bpf(evsel))
535 continue;
536
537 err = bpf_counter__enable(evsel);
538 if (err)
539 return err;
540 }
541
542 /*
543 * We need to enable counters only if:
544 * - we don't have tracee (attaching to task or cpu)
545 * - we have initial delay configured
546 */
547 if (!target__none(&target)) {
548 if (!all_counters_use_bpf)
549 evlist__enable(evsel_list);
550 }
551 return 0;
552}
553
554static void disable_counters(void)
555{
556 struct evsel *counter;
557
558 /*
559 * If we don't have tracee (attaching to task or cpu), counters may
560 * still be running. To get accurate group ratios, we must stop groups
561 * from counting before reading their constituent counters.
562 */
563 if (!target__none(&target)) {
564 evlist__for_each_entry(evsel_list, counter)
565 bpf_counter__disable(counter);
566 if (!all_counters_use_bpf)
567 evlist__disable(evsel_list);
568 }
569}
570
571static volatile sig_atomic_t workload_exec_errno;
572
573/*
574 * evlist__prepare_workload will send a SIGUSR1
575 * if the fork fails, since we asked by setting its
576 * want_signal to true.
577 */
578static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
579 void *ucontext __maybe_unused)
580{
581 workload_exec_errno = info->si_value.sival_int;
582}
583
584static bool evsel__should_store_id(struct evsel *counter)
585{
586 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
587}
588
589static bool is_target_alive(struct target *_target,
590 struct perf_thread_map *threads)
591{
592 struct stat st;
593 int i;
594
595 if (!target__has_task(_target))
596 return true;
597
598 for (i = 0; i < threads->nr; i++) {
599 char path[PATH_MAX];
600
601 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
602 threads->map[i].pid);
603
604 if (!stat(path, &st))
605 return true;
606 }
607
608 return false;
609}
610
611static void process_evlist(struct evlist *evlist, unsigned int interval)
612{
613 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
614
615 if (evlist__ctlfd_process(evlist, &cmd) > 0) {
616 switch (cmd) {
617 case EVLIST_CTL_CMD_ENABLE:
618 __fallthrough;
619 case EVLIST_CTL_CMD_DISABLE:
620 if (interval)
621 process_interval();
622 break;
623 case EVLIST_CTL_CMD_SNAPSHOT:
624 case EVLIST_CTL_CMD_ACK:
625 case EVLIST_CTL_CMD_UNSUPPORTED:
626 case EVLIST_CTL_CMD_EVLIST:
627 case EVLIST_CTL_CMD_STOP:
628 case EVLIST_CTL_CMD_PING:
629 default:
630 break;
631 }
632 }
633}
634
635static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
636 int *time_to_sleep)
637{
638 int tts = *time_to_sleep;
639 struct timespec time_diff;
640
641 diff_timespec(&time_diff, time_stop, time_start);
642
643 tts -= time_diff.tv_sec * MSEC_PER_SEC +
644 time_diff.tv_nsec / NSEC_PER_MSEC;
645
646 if (tts < 0)
647 tts = 0;
648
649 *time_to_sleep = tts;
650}
651
652static int dispatch_events(bool forks, int timeout, int interval, int *times)
653{
654 int child_exited = 0, status = 0;
655 int time_to_sleep, sleep_time;
656 struct timespec time_start, time_stop;
657
658 if (interval)
659 sleep_time = interval;
660 else if (timeout)
661 sleep_time = timeout;
662 else
663 sleep_time = 1000;
664
665 time_to_sleep = sleep_time;
666
667 while (!done) {
668 if (forks)
669 child_exited = waitpid(child_pid, &status, WNOHANG);
670 else
671 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
672
673 if (child_exited)
674 break;
675
676 clock_gettime(CLOCK_MONOTONIC, &time_start);
677 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
678 if (timeout || handle_interval(interval, times))
679 break;
680 time_to_sleep = sleep_time;
681 } else { /* fd revent */
682 process_evlist(evsel_list, interval);
683 clock_gettime(CLOCK_MONOTONIC, &time_stop);
684 compute_tts(&time_start, &time_stop, &time_to_sleep);
685 }
686 }
687
688 return status;
689}
690
691enum counter_recovery {
692 COUNTER_SKIP,
693 COUNTER_RETRY,
694 COUNTER_FATAL,
695};
696
697static enum counter_recovery stat_handle_error(struct evsel *counter)
698{
699 char msg[BUFSIZ];
700 /*
701 * PPC returns ENXIO for HW counters until 2.6.37
702 * (behavior changed with commit b0a873e).
703 */
704 if (errno == EINVAL || errno == ENOSYS ||
705 errno == ENOENT || errno == EOPNOTSUPP ||
706 errno == ENXIO) {
707 if (verbose > 0)
708 ui__warning("%s event is not supported by the kernel.\n",
709 evsel__name(counter));
710 counter->supported = false;
711 /*
712 * errored is a sticky flag that means one of the counter's
713 * cpu event had a problem and needs to be reexamined.
714 */
715 counter->errored = true;
716
717 if ((evsel__leader(counter) != counter) ||
718 !(counter->core.leader->nr_members > 1))
719 return COUNTER_SKIP;
720 } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) {
721 if (verbose > 0)
722 ui__warning("%s\n", msg);
723 return COUNTER_RETRY;
724 } else if (target__has_per_thread(&target) &&
725 evsel_list->core.threads &&
726 evsel_list->core.threads->err_thread != -1) {
727 /*
728 * For global --per-thread case, skip current
729 * error thread.
730 */
731 if (!thread_map__remove(evsel_list->core.threads,
732 evsel_list->core.threads->err_thread)) {
733 evsel_list->core.threads->err_thread = -1;
734 return COUNTER_RETRY;
735 }
736 }
737
738 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
739 ui__error("%s\n", msg);
740
741 if (child_pid != -1)
742 kill(child_pid, SIGTERM);
743 return COUNTER_FATAL;
744}
745
746static int __run_perf_stat(int argc, const char **argv, int run_idx)
747{
748 int interval = stat_config.interval;
749 int times = stat_config.times;
750 int timeout = stat_config.timeout;
751 char msg[BUFSIZ];
752 unsigned long long t0, t1;
753 struct evsel *counter;
754 size_t l;
755 int status = 0;
756 const bool forks = (argc > 0);
757 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
758 struct evlist_cpu_iterator evlist_cpu_itr;
759 struct affinity saved_affinity, *affinity = NULL;
760 int err;
761 bool second_pass = false;
762
763 if (forks) {
764 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
765 perror("failed to prepare workload");
766 return -1;
767 }
768 child_pid = evsel_list->workload.pid;
769 }
770
771 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
772 if (affinity__setup(&saved_affinity) < 0)
773 return -1;
774 affinity = &saved_affinity;
775 }
776
777 evlist__for_each_entry(evsel_list, counter) {
778 counter->reset_group = false;
779 if (bpf_counter__load(counter, &target))
780 return -1;
781 if (!evsel__is_bpf(counter))
782 all_counters_use_bpf = false;
783 }
784
785 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
786 counter = evlist_cpu_itr.evsel;
787
788 /*
789 * bperf calls evsel__open_per_cpu() in bperf__load(), so
790 * no need to call it again here.
791 */
792 if (target.use_bpf)
793 break;
794
795 if (counter->reset_group || counter->errored)
796 continue;
797 if (evsel__is_bpf(counter))
798 continue;
799try_again:
800 if (create_perf_stat_counter(counter, &stat_config, &target,
801 evlist_cpu_itr.cpu_map_idx) < 0) {
802
803 /*
804 * Weak group failed. We cannot just undo this here
805 * because earlier CPUs might be in group mode, and the kernel
806 * doesn't support mixing group and non group reads. Defer
807 * it to later.
808 * Don't close here because we're in the wrong affinity.
809 */
810 if ((errno == EINVAL || errno == EBADF) &&
811 evsel__leader(counter) != counter &&
812 counter->weak_group) {
813 evlist__reset_weak_group(evsel_list, counter, false);
814 assert(counter->reset_group);
815 second_pass = true;
816 continue;
817 }
818
819 switch (stat_handle_error(counter)) {
820 case COUNTER_FATAL:
821 return -1;
822 case COUNTER_RETRY:
823 goto try_again;
824 case COUNTER_SKIP:
825 continue;
826 default:
827 break;
828 }
829
830 }
831 counter->supported = true;
832 }
833
834 if (second_pass) {
835 /*
836 * Now redo all the weak group after closing them,
837 * and also close errored counters.
838 */
839
840 /* First close errored or weak retry */
841 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
842 counter = evlist_cpu_itr.evsel;
843
844 if (!counter->reset_group && !counter->errored)
845 continue;
846
847 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
848 }
849 /* Now reopen weak */
850 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
851 counter = evlist_cpu_itr.evsel;
852
853 if (!counter->reset_group)
854 continue;
855try_again_reset:
856 pr_debug2("reopening weak %s\n", evsel__name(counter));
857 if (create_perf_stat_counter(counter, &stat_config, &target,
858 evlist_cpu_itr.cpu_map_idx) < 0) {
859
860 switch (stat_handle_error(counter)) {
861 case COUNTER_FATAL:
862 return -1;
863 case COUNTER_RETRY:
864 goto try_again_reset;
865 case COUNTER_SKIP:
866 continue;
867 default:
868 break;
869 }
870 }
871 counter->supported = true;
872 }
873 }
874 affinity__cleanup(affinity);
875
876 evlist__for_each_entry(evsel_list, counter) {
877 if (!counter->supported) {
878 perf_evsel__free_fd(&counter->core);
879 continue;
880 }
881
882 l = strlen(counter->unit);
883 if (l > stat_config.unit_width)
884 stat_config.unit_width = l;
885
886 if (evsel__should_store_id(counter) &&
887 evsel__store_ids(counter, evsel_list))
888 return -1;
889 }
890
891 if (evlist__apply_filters(evsel_list, &counter)) {
892 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
893 counter->filter, evsel__name(counter), errno,
894 str_error_r(errno, msg, sizeof(msg)));
895 return -1;
896 }
897
898 if (STAT_RECORD) {
899 int fd = perf_data__fd(&perf_stat.data);
900
901 if (is_pipe) {
902 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
903 } else {
904 err = perf_session__write_header(perf_stat.session, evsel_list,
905 fd, false);
906 }
907
908 if (err < 0)
909 return err;
910
911 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
912 process_synthesized_event, is_pipe);
913 if (err < 0)
914 return err;
915 }
916
917 if (stat_config.initial_delay) {
918 pr_info(EVLIST_DISABLED_MSG);
919 } else {
920 err = enable_counters();
921 if (err)
922 return -1;
923 }
924
925 /* Exec the command, if any */
926 if (forks)
927 evlist__start_workload(evsel_list);
928
929 if (stat_config.initial_delay > 0) {
930 usleep(stat_config.initial_delay * USEC_PER_MSEC);
931 err = enable_counters();
932 if (err)
933 return -1;
934
935 pr_info(EVLIST_ENABLED_MSG);
936 }
937
938 t0 = rdclock();
939 clock_gettime(CLOCK_MONOTONIC, &ref_time);
940
941 if (forks) {
942 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
943 status = dispatch_events(forks, timeout, interval, ×);
944 if (child_pid != -1) {
945 if (timeout)
946 kill(child_pid, SIGTERM);
947 wait4(child_pid, &status, 0, &stat_config.ru_data);
948 }
949
950 if (workload_exec_errno) {
951 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
952 pr_err("Workload failed: %s\n", emsg);
953 return -1;
954 }
955
956 if (WIFSIGNALED(status))
957 psignal(WTERMSIG(status), argv[0]);
958 } else {
959 status = dispatch_events(forks, timeout, interval, ×);
960 }
961
962 disable_counters();
963
964 t1 = rdclock();
965
966 if (stat_config.walltime_run_table)
967 stat_config.walltime_run[run_idx] = t1 - t0;
968
969 if (interval && stat_config.summary) {
970 stat_config.interval = 0;
971 stat_config.stop_read_counter = true;
972 init_stats(&walltime_nsecs_stats);
973 update_stats(&walltime_nsecs_stats, t1 - t0);
974
975 evlist__copy_prev_raw_counts(evsel_list);
976 evlist__reset_prev_raw_counts(evsel_list);
977 evlist__reset_aggr_stats(evsel_list);
978 perf_stat__reset_shadow_per_stat(&rt_stat);
979 } else {
980 update_stats(&walltime_nsecs_stats, t1 - t0);
981 update_rusage_stats(&ru_stats, &stat_config.ru_data);
982 }
983
984 /*
985 * Closing a group leader splits the group, and as we only disable
986 * group leaders, results in remaining events becoming enabled. To
987 * avoid arbitrary skew, we must read all counters before closing any
988 * group leaders.
989 */
990 if (read_counters(&(struct timespec) { .tv_nsec = t1-t0 }) == 0)
991 process_counters();
992
993 /*
994 * We need to keep evsel_list alive, because it's processed
995 * later the evsel_list will be closed after.
996 */
997 if (!STAT_RECORD)
998 evlist__close(evsel_list);
999
1000 return WEXITSTATUS(status);
1001}
1002
1003static int run_perf_stat(int argc, const char **argv, int run_idx)
1004{
1005 int ret;
1006
1007 if (pre_cmd) {
1008 ret = system(pre_cmd);
1009 if (ret)
1010 return ret;
1011 }
1012
1013 if (sync_run)
1014 sync();
1015
1016 ret = __run_perf_stat(argc, argv, run_idx);
1017 if (ret)
1018 return ret;
1019
1020 if (post_cmd) {
1021 ret = system(post_cmd);
1022 if (ret)
1023 return ret;
1024 }
1025
1026 return ret;
1027}
1028
1029static void print_counters(struct timespec *ts, int argc, const char **argv)
1030{
1031 /* Do not print anything if we record to the pipe. */
1032 if (STAT_RECORD && perf_stat.data.is_pipe)
1033 return;
1034 if (quiet)
1035 return;
1036
1037 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
1038}
1039
1040static volatile sig_atomic_t signr = -1;
1041
1042static void skip_signal(int signo)
1043{
1044 if ((child_pid == -1) || stat_config.interval)
1045 done = 1;
1046
1047 signr = signo;
1048 /*
1049 * render child_pid harmless
1050 * won't send SIGTERM to a random
1051 * process in case of race condition
1052 * and fast PID recycling
1053 */
1054 child_pid = -1;
1055}
1056
1057static void sig_atexit(void)
1058{
1059 sigset_t set, oset;
1060
1061 /*
1062 * avoid race condition with SIGCHLD handler
1063 * in skip_signal() which is modifying child_pid
1064 * goal is to avoid send SIGTERM to a random
1065 * process
1066 */
1067 sigemptyset(&set);
1068 sigaddset(&set, SIGCHLD);
1069 sigprocmask(SIG_BLOCK, &set, &oset);
1070
1071 if (child_pid != -1)
1072 kill(child_pid, SIGTERM);
1073
1074 sigprocmask(SIG_SETMASK, &oset, NULL);
1075
1076 if (signr == -1)
1077 return;
1078
1079 signal(signr, SIG_DFL);
1080 kill(getpid(), signr);
1081}
1082
1083void perf_stat__set_big_num(int set)
1084{
1085 stat_config.big_num = (set != 0);
1086}
1087
1088void perf_stat__set_no_csv_summary(int set)
1089{
1090 stat_config.no_csv_summary = (set != 0);
1091}
1092
1093static int stat__set_big_num(const struct option *opt __maybe_unused,
1094 const char *s __maybe_unused, int unset)
1095{
1096 big_num_opt = unset ? 0 : 1;
1097 perf_stat__set_big_num(!unset);
1098 return 0;
1099}
1100
1101static int enable_metric_only(const struct option *opt __maybe_unused,
1102 const char *s __maybe_unused, int unset)
1103{
1104 force_metric_only = true;
1105 stat_config.metric_only = !unset;
1106 return 0;
1107}
1108
1109static int append_metric_groups(const struct option *opt __maybe_unused,
1110 const char *str,
1111 int unset __maybe_unused)
1112{
1113 if (metrics) {
1114 char *tmp;
1115
1116 if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
1117 return -ENOMEM;
1118 free(metrics);
1119 metrics = tmp;
1120 } else {
1121 metrics = strdup(str);
1122 if (!metrics)
1123 return -ENOMEM;
1124 }
1125 return 0;
1126}
1127
1128static int parse_control_option(const struct option *opt,
1129 const char *str,
1130 int unset __maybe_unused)
1131{
1132 struct perf_stat_config *config = opt->value;
1133
1134 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1135}
1136
1137static int parse_stat_cgroups(const struct option *opt,
1138 const char *str, int unset)
1139{
1140 if (stat_config.cgroup_list) {
1141 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1142 return -1;
1143 }
1144
1145 return parse_cgroups(opt, str, unset);
1146}
1147
1148static int parse_hybrid_type(const struct option *opt,
1149 const char *str,
1150 int unset __maybe_unused)
1151{
1152 struct evlist *evlist = *(struct evlist **)opt->value;
1153
1154 if (!list_empty(&evlist->core.entries)) {
1155 fprintf(stderr, "Must define cputype before events/metrics\n");
1156 return -1;
1157 }
1158
1159 evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str);
1160 if (!evlist->hybrid_pmu_name) {
1161 fprintf(stderr, "--cputype %s is not supported!\n", str);
1162 return -1;
1163 }
1164
1165 return 0;
1166}
1167
1168static struct option stat_options[] = {
1169 OPT_BOOLEAN('T', "transaction", &transaction_run,
1170 "hardware transaction statistics"),
1171 OPT_CALLBACK('e', "event", &evsel_list, "event",
1172 "event selector. use 'perf list' to list available events",
1173 parse_events_option),
1174 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1175 "event filter", parse_filter),
1176 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
1177 "child tasks do not inherit counters"),
1178 OPT_STRING('p', "pid", &target.pid, "pid",
1179 "stat events on existing process id"),
1180 OPT_STRING('t', "tid", &target.tid, "tid",
1181 "stat events on existing thread id"),
1182#ifdef HAVE_BPF_SKEL
1183 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
1184 "stat events on existing bpf program id"),
1185 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
1186 "use bpf program to count events"),
1187 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
1188 "path to perf_event_attr map"),
1189#endif
1190 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1191 "system-wide collection from all CPUs"),
1192 OPT_BOOLEAN(0, "scale", &stat_config.scale,
1193 "Use --no-scale to disable counter scaling for multiplexing"),
1194 OPT_INCR('v', "verbose", &verbose,
1195 "be more verbose (show counter open errors, etc)"),
1196 OPT_INTEGER('r', "repeat", &stat_config.run_count,
1197 "repeat command and print average + stddev (max: 100, forever: 0)"),
1198 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
1199 "display details about each run (only with -r option)"),
1200 OPT_BOOLEAN('n', "null", &stat_config.null_run,
1201 "null run - dont start any counters"),
1202 OPT_INCR('d', "detailed", &detailed_run,
1203 "detailed run - start a lot of events"),
1204 OPT_BOOLEAN('S', "sync", &sync_run,
1205 "call sync() before starting a run"),
1206 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1207 "print large numbers with thousands\' separators",
1208 stat__set_big_num),
1209 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1210 "list of cpus to monitor in system-wide"),
1211 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1212 "disable CPU count aggregation", AGGR_NONE),
1213 OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"),
1214 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
1215 "Merge identical named hybrid events"),
1216 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
1217 "print counts with custom separator"),
1218 OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
1219 "print counts in JSON format"),
1220 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1221 "monitor event in cgroup name only", parse_stat_cgroups),
1222 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
1223 "expand events for each cgroup"),
1224 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1225 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1226 OPT_INTEGER(0, "log-fd", &output_fd,
1227 "log output to fd, instead of stderr"),
1228 OPT_STRING(0, "pre", &pre_cmd, "command",
1229 "command to run prior to the measured command"),
1230 OPT_STRING(0, "post", &post_cmd, "command",
1231 "command to run after to the measured command"),
1232 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1233 "print counts at regular interval in ms "
1234 "(overhead is possible for values <= 100ms)"),
1235 OPT_INTEGER(0, "interval-count", &stat_config.times,
1236 "print counts for fixed number of times"),
1237 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
1238 "clear screen in between new interval"),
1239 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
1240 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
1241 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1242 "aggregate counts per processor socket", AGGR_SOCKET),
1243 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode,
1244 "aggregate counts per processor die", AGGR_DIE),
1245 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1246 "aggregate counts per physical processor core", AGGR_CORE),
1247 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1248 "aggregate counts per thread", AGGR_THREAD),
1249 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode,
1250 "aggregate counts per numa node", AGGR_NODE),
1251 OPT_INTEGER('D', "delay", &stat_config.initial_delay,
1252 "ms to wait before starting measurement after program start (-1: start with events disabled)"),
1253 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
1254 "Only print computed metrics. No raw values", enable_metric_only),
1255 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
1256 "don't group metric events, impacts multiplexing"),
1257 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
1258 "don't try to share events between metrics in a group"),
1259 OPT_BOOLEAN(0, "topdown", &topdown_run,
1260 "measure top-down statistics"),
1261 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
1262 "Set the metrics level for the top-down statistics (0: max level)"),
1263 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
1264 "measure SMI cost"),
1265 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
1266 "monitor specified metrics or metric groups (separated by ,)",
1267 append_metric_groups),
1268 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
1269 "Configure all used events to run in kernel space.",
1270 PARSE_OPT_EXCLUSIVE),
1271 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
1272 "Configure all used events to run in user space.",
1273 PARSE_OPT_EXCLUSIVE),
1274 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
1275 "Use with 'percore' event qualifier to show the event "
1276 "counts of one hardware thread by sum up total hardware "
1277 "threads of same physical core"),
1278 OPT_BOOLEAN(0, "summary", &stat_config.summary,
1279 "print summary for interval mode"),
1280 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
1281 "don't print 'summary' for CSV summary output"),
1282 OPT_BOOLEAN(0, "quiet", &quiet,
1283 "don't print any output, messages or warnings (useful with record)"),
1284 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
1285 "Only enable events on applying cpu with this type "
1286 "for hybrid platform (e.g. core or atom)",
1287 parse_hybrid_type),
1288#ifdef HAVE_LIBPFM
1289 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
1290 "libpfm4 event selector. use 'perf list' to list available events",
1291 parse_libpfm_events_option),
1292#endif
1293 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
1294 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
1295 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
1296 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
1297 parse_control_option),
1298 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
1299 "measure I/O performance metrics provided by arch/platform",
1300 iostat_parse),
1301 OPT_END()
1302};
1303
1304static const char *const aggr_mode__string[] = {
1305 [AGGR_CORE] = "core",
1306 [AGGR_DIE] = "die",
1307 [AGGR_GLOBAL] = "global",
1308 [AGGR_NODE] = "node",
1309 [AGGR_NONE] = "none",
1310 [AGGR_SOCKET] = "socket",
1311 [AGGR_THREAD] = "thread",
1312 [AGGR_UNSET] = "unset",
1313};
1314
1315static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1316 struct perf_cpu cpu)
1317{
1318 return aggr_cpu_id__socket(cpu, /*data=*/NULL);
1319}
1320
1321static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1322 struct perf_cpu cpu)
1323{
1324 return aggr_cpu_id__die(cpu, /*data=*/NULL);
1325}
1326
1327static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1328 struct perf_cpu cpu)
1329{
1330 return aggr_cpu_id__core(cpu, /*data=*/NULL);
1331}
1332
1333static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1334 struct perf_cpu cpu)
1335{
1336 return aggr_cpu_id__node(cpu, /*data=*/NULL);
1337}
1338
1339static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
1340 struct perf_cpu cpu)
1341{
1342 return aggr_cpu_id__global(cpu, /*data=*/NULL);
1343}
1344
1345static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
1346 struct perf_cpu cpu)
1347{
1348 return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1349}
1350
1351static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1352 aggr_get_id_t get_id, struct perf_cpu cpu)
1353{
1354 struct aggr_cpu_id id;
1355
1356 /* per-process mode - should use global aggr mode */
1357 if (cpu.cpu == -1)
1358 return get_id(config, cpu);
1359
1360 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
1361 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
1362
1363 id = config->cpus_aggr_map->map[cpu.cpu];
1364 return id;
1365}
1366
1367static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1368 struct perf_cpu cpu)
1369{
1370 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
1371}
1372
1373static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1374 struct perf_cpu cpu)
1375{
1376 return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
1377}
1378
1379static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1380 struct perf_cpu cpu)
1381{
1382 return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
1383}
1384
1385static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1386 struct perf_cpu cpu)
1387{
1388 return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
1389}
1390
1391static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
1392 struct perf_cpu cpu)
1393{
1394 return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
1395}
1396
1397static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
1398 struct perf_cpu cpu)
1399{
1400 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
1401}
1402
1403static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
1404{
1405 switch (aggr_mode) {
1406 case AGGR_SOCKET:
1407 return aggr_cpu_id__socket;
1408 case AGGR_DIE:
1409 return aggr_cpu_id__die;
1410 case AGGR_CORE:
1411 return aggr_cpu_id__core;
1412 case AGGR_NODE:
1413 return aggr_cpu_id__node;
1414 case AGGR_NONE:
1415 return aggr_cpu_id__cpu;
1416 case AGGR_GLOBAL:
1417 return aggr_cpu_id__global;
1418 case AGGR_THREAD:
1419 case AGGR_UNSET:
1420 case AGGR_MAX:
1421 default:
1422 return NULL;
1423 }
1424}
1425
1426static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
1427{
1428 switch (aggr_mode) {
1429 case AGGR_SOCKET:
1430 return perf_stat__get_socket_cached;
1431 case AGGR_DIE:
1432 return perf_stat__get_die_cached;
1433 case AGGR_CORE:
1434 return perf_stat__get_core_cached;
1435 case AGGR_NODE:
1436 return perf_stat__get_node_cached;
1437 case AGGR_NONE:
1438 return perf_stat__get_cpu_cached;
1439 case AGGR_GLOBAL:
1440 return perf_stat__get_global_cached;
1441 case AGGR_THREAD:
1442 case AGGR_UNSET:
1443 case AGGR_MAX:
1444 default:
1445 return NULL;
1446 }
1447}
1448
1449static int perf_stat_init_aggr_mode(void)
1450{
1451 int nr;
1452 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
1453
1454 if (get_id) {
1455 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1456 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1457 get_id, /*data=*/NULL, needs_sort);
1458 if (!stat_config.aggr_map) {
1459 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]);
1460 return -1;
1461 }
1462 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
1463 }
1464
1465 if (stat_config.aggr_mode == AGGR_THREAD) {
1466 nr = perf_thread_map__nr(evsel_list->core.threads);
1467 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1468 if (stat_config.aggr_map == NULL)
1469 return -ENOMEM;
1470
1471 for (int s = 0; s < nr; s++) {
1472 struct aggr_cpu_id id = aggr_cpu_id__empty();
1473
1474 id.thread_idx = s;
1475 stat_config.aggr_map->map[s] = id;
1476 }
1477 return 0;
1478 }
1479
1480 /*
1481 * The evsel_list->cpus is the base we operate on,
1482 * taking the highest cpu number to be the size of
1483 * the aggregation translate cpumap.
1484 */
1485 if (evsel_list->core.user_requested_cpus)
1486 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
1487 else
1488 nr = 0;
1489 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1490 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1491}
1492
1493static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1494{
1495 if (map) {
1496 WARN_ONCE(refcount_read(&map->refcnt) != 0,
1497 "cpu_aggr_map refcnt unbalanced\n");
1498 free(map);
1499 }
1500}
1501
1502static void cpu_aggr_map__put(struct cpu_aggr_map *map)
1503{
1504 if (map && refcount_dec_and_test(&map->refcnt))
1505 cpu_aggr_map__delete(map);
1506}
1507
1508static void perf_stat__exit_aggr_mode(void)
1509{
1510 cpu_aggr_map__put(stat_config.aggr_map);
1511 cpu_aggr_map__put(stat_config.cpus_aggr_map);
1512 stat_config.aggr_map = NULL;
1513 stat_config.cpus_aggr_map = NULL;
1514}
1515
1516static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
1517{
1518 struct perf_env *env = data;
1519 struct aggr_cpu_id id = aggr_cpu_id__empty();
1520
1521 if (cpu.cpu != -1)
1522 id.socket = env->cpu[cpu.cpu].socket_id;
1523
1524 return id;
1525}
1526
1527static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
1528{
1529 struct perf_env *env = data;
1530 struct aggr_cpu_id id = aggr_cpu_id__empty();
1531
1532 if (cpu.cpu != -1) {
1533 /*
1534 * die_id is relative to socket, so start
1535 * with the socket ID and then add die to
1536 * make a unique ID.
1537 */
1538 id.socket = env->cpu[cpu.cpu].socket_id;
1539 id.die = env->cpu[cpu.cpu].die_id;
1540 }
1541
1542 return id;
1543}
1544
1545static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
1546{
1547 struct perf_env *env = data;
1548 struct aggr_cpu_id id = aggr_cpu_id__empty();
1549
1550 if (cpu.cpu != -1) {
1551 /*
1552 * core_id is relative to socket and die,
1553 * we need a global id. So we set
1554 * socket, die id and core id
1555 */
1556 id.socket = env->cpu[cpu.cpu].socket_id;
1557 id.die = env->cpu[cpu.cpu].die_id;
1558 id.core = env->cpu[cpu.cpu].core_id;
1559 }
1560
1561 return id;
1562}
1563
1564static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
1565{
1566 struct perf_env *env = data;
1567 struct aggr_cpu_id id = aggr_cpu_id__empty();
1568
1569 if (cpu.cpu != -1) {
1570 /*
1571 * core_id is relative to socket and die,
1572 * we need a global id. So we set
1573 * socket, die id and core id
1574 */
1575 id.socket = env->cpu[cpu.cpu].socket_id;
1576 id.die = env->cpu[cpu.cpu].die_id;
1577 id.core = env->cpu[cpu.cpu].core_id;
1578 id.cpu = cpu;
1579 }
1580
1581 return id;
1582}
1583
1584static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
1585{
1586 struct aggr_cpu_id id = aggr_cpu_id__empty();
1587
1588 id.node = perf_env__numa_node(data, cpu);
1589 return id;
1590}
1591
1592static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
1593 void *data __maybe_unused)
1594{
1595 struct aggr_cpu_id id = aggr_cpu_id__empty();
1596
1597 /* it always aggregates to the cpu 0 */
1598 id.cpu = (struct perf_cpu){ .cpu = 0 };
1599 return id;
1600}
1601
1602static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1603 struct perf_cpu cpu)
1604{
1605 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1606}
1607static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1608 struct perf_cpu cpu)
1609{
1610 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1611}
1612
1613static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1614 struct perf_cpu cpu)
1615{
1616 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1617}
1618
1619static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
1620 struct perf_cpu cpu)
1621{
1622 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1623}
1624
1625static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1626 struct perf_cpu cpu)
1627{
1628 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1629}
1630
1631static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
1632 struct perf_cpu cpu)
1633{
1634 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1635}
1636
1637static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
1638{
1639 switch (aggr_mode) {
1640 case AGGR_SOCKET:
1641 return perf_env__get_socket_aggr_by_cpu;
1642 case AGGR_DIE:
1643 return perf_env__get_die_aggr_by_cpu;
1644 case AGGR_CORE:
1645 return perf_env__get_core_aggr_by_cpu;
1646 case AGGR_NODE:
1647 return perf_env__get_node_aggr_by_cpu;
1648 case AGGR_GLOBAL:
1649 return perf_env__get_global_aggr_by_cpu;
1650 case AGGR_NONE:
1651 return perf_env__get_cpu_aggr_by_cpu;
1652 case AGGR_THREAD:
1653 case AGGR_UNSET:
1654 case AGGR_MAX:
1655 default:
1656 return NULL;
1657 }
1658}
1659
1660static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
1661{
1662 switch (aggr_mode) {
1663 case AGGR_SOCKET:
1664 return perf_stat__get_socket_file;
1665 case AGGR_DIE:
1666 return perf_stat__get_die_file;
1667 case AGGR_CORE:
1668 return perf_stat__get_core_file;
1669 case AGGR_NODE:
1670 return perf_stat__get_node_file;
1671 case AGGR_GLOBAL:
1672 return perf_stat__get_global_file;
1673 case AGGR_NONE:
1674 return perf_stat__get_cpu_file;
1675 case AGGR_THREAD:
1676 case AGGR_UNSET:
1677 case AGGR_MAX:
1678 default:
1679 return NULL;
1680 }
1681}
1682
1683static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1684{
1685 struct perf_env *env = &st->session->header.env;
1686 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
1687 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1688
1689 if (stat_config.aggr_mode == AGGR_THREAD) {
1690 int nr = perf_thread_map__nr(evsel_list->core.threads);
1691
1692 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1693 if (stat_config.aggr_map == NULL)
1694 return -ENOMEM;
1695
1696 for (int s = 0; s < nr; s++) {
1697 struct aggr_cpu_id id = aggr_cpu_id__empty();
1698
1699 id.thread_idx = s;
1700 stat_config.aggr_map->map[s] = id;
1701 }
1702 return 0;
1703 }
1704
1705 if (!get_id)
1706 return 0;
1707
1708 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1709 get_id, env, needs_sort);
1710 if (!stat_config.aggr_map) {
1711 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]);
1712 return -1;
1713 }
1714 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
1715 return 0;
1716}
1717
1718/*
1719 * Add default attributes, if there were no attributes specified or
1720 * if -d/--detailed, -d -d or -d -d -d is used:
1721 */
1722static int add_default_attributes(void)
1723{
1724 int err;
1725 struct perf_event_attr default_attrs0[] = {
1726
1727 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1728 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1729 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1730 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1731
1732 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1733};
1734 struct perf_event_attr frontend_attrs[] = {
1735 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1736};
1737 struct perf_event_attr backend_attrs[] = {
1738 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1739};
1740 struct perf_event_attr default_attrs1[] = {
1741 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1742 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1743 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1744
1745};
1746
1747/*
1748 * Detailed stats (-d), covering the L1 and last level data caches:
1749 */
1750 struct perf_event_attr detailed_attrs[] = {
1751
1752 { .type = PERF_TYPE_HW_CACHE,
1753 .config =
1754 PERF_COUNT_HW_CACHE_L1D << 0 |
1755 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1756 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1757
1758 { .type = PERF_TYPE_HW_CACHE,
1759 .config =
1760 PERF_COUNT_HW_CACHE_L1D << 0 |
1761 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1762 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1763
1764 { .type = PERF_TYPE_HW_CACHE,
1765 .config =
1766 PERF_COUNT_HW_CACHE_LL << 0 |
1767 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1768 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1769
1770 { .type = PERF_TYPE_HW_CACHE,
1771 .config =
1772 PERF_COUNT_HW_CACHE_LL << 0 |
1773 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1774 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1775};
1776
1777/*
1778 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1779 */
1780 struct perf_event_attr very_detailed_attrs[] = {
1781
1782 { .type = PERF_TYPE_HW_CACHE,
1783 .config =
1784 PERF_COUNT_HW_CACHE_L1I << 0 |
1785 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1786 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1787
1788 { .type = PERF_TYPE_HW_CACHE,
1789 .config =
1790 PERF_COUNT_HW_CACHE_L1I << 0 |
1791 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1792 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1793
1794 { .type = PERF_TYPE_HW_CACHE,
1795 .config =
1796 PERF_COUNT_HW_CACHE_DTLB << 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_DTLB << 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_ITLB << 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_ITLB << 0 |
1815 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1816 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1817
1818};
1819
1820/*
1821 * Very, very detailed stats (-d -d -d), adding prefetch events:
1822 */
1823 struct perf_event_attr very_very_detailed_attrs[] = {
1824
1825 { .type = PERF_TYPE_HW_CACHE,
1826 .config =
1827 PERF_COUNT_HW_CACHE_L1D << 0 |
1828 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1829 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1830
1831 { .type = PERF_TYPE_HW_CACHE,
1832 .config =
1833 PERF_COUNT_HW_CACHE_L1D << 0 |
1834 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1835 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1836};
1837
1838 struct perf_event_attr default_null_attrs[] = {};
1839
1840 /* Set attrs if no event is selected and !null_run: */
1841 if (stat_config.null_run)
1842 return 0;
1843
1844 if (transaction_run) {
1845 struct parse_events_error errinfo;
1846 /* Handle -T as -M transaction. Once platform specific metrics
1847 * support has been added to the json files, all architectures
1848 * will use this approach. To determine transaction support
1849 * on an architecture test for such a metric name.
1850 */
1851 if (metricgroup__has_metric("transaction")) {
1852 return metricgroup__parse_groups(evsel_list, "transaction",
1853 stat_config.metric_no_group,
1854 stat_config.metric_no_merge,
1855 stat_config.user_requested_cpu_list,
1856 stat_config.system_wide,
1857 &stat_config.metric_events);
1858 }
1859
1860 parse_events_error__init(&errinfo);
1861 if (pmu_have_event("cpu", "cycles-ct") &&
1862 pmu_have_event("cpu", "el-start"))
1863 err = parse_events(evsel_list, transaction_attrs,
1864 &errinfo);
1865 else
1866 err = parse_events(evsel_list,
1867 transaction_limited_attrs,
1868 &errinfo);
1869 if (err) {
1870 fprintf(stderr, "Cannot set up transaction events\n");
1871 parse_events_error__print(&errinfo, transaction_attrs);
1872 }
1873 parse_events_error__exit(&errinfo);
1874 return err ? -1 : 0;
1875 }
1876
1877 if (smi_cost) {
1878 struct parse_events_error errinfo;
1879 int smi;
1880
1881 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1882 fprintf(stderr, "freeze_on_smi is not supported.\n");
1883 return -1;
1884 }
1885
1886 if (!smi) {
1887 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1888 fprintf(stderr, "Failed to set freeze_on_smi.\n");
1889 return -1;
1890 }
1891 smi_reset = true;
1892 }
1893
1894 if (!pmu_have_event("msr", "aperf") ||
1895 !pmu_have_event("msr", "smi")) {
1896 fprintf(stderr, "To measure SMI cost, it needs "
1897 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
1898 return -1;
1899 }
1900 if (!force_metric_only)
1901 stat_config.metric_only = true;
1902
1903 parse_events_error__init(&errinfo);
1904 err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
1905 if (err) {
1906 parse_events_error__print(&errinfo, smi_cost_attrs);
1907 fprintf(stderr, "Cannot set up SMI cost events\n");
1908 }
1909 parse_events_error__exit(&errinfo);
1910 return err ? -1 : 0;
1911 }
1912
1913 if (topdown_run) {
1914 const char **metric_attrs = topdown_metric_attrs;
1915 unsigned int max_level = 1;
1916 char *str = NULL;
1917 bool warn = false;
1918 const char *pmu_name = arch_get_topdown_pmu_name(evsel_list, true);
1919
1920 if (!force_metric_only)
1921 stat_config.metric_only = true;
1922
1923 if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) {
1924 metric_attrs = topdown_metric_L2_attrs;
1925 max_level = 2;
1926 }
1927
1928 if (stat_config.topdown_level > max_level) {
1929 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
1930 return -1;
1931 } else if (!stat_config.topdown_level)
1932 stat_config.topdown_level = max_level;
1933
1934 if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) {
1935 pr_err("Out of memory\n");
1936 return -1;
1937 }
1938
1939 if (metric_attrs[0] && str) {
1940 if (!stat_config.interval && !stat_config.metric_only) {
1941 fprintf(stat_config.output,
1942 "Topdown accuracy may decrease when measuring long periods.\n"
1943 "Please print the result regularly, e.g. -I1000\n");
1944 }
1945 goto setup_metrics;
1946 }
1947
1948 zfree(&str);
1949
1950 if (stat_config.aggr_mode != AGGR_GLOBAL &&
1951 stat_config.aggr_mode != AGGR_CORE) {
1952 pr_err("top down event configuration requires --per-core mode\n");
1953 return -1;
1954 }
1955 stat_config.aggr_mode = AGGR_CORE;
1956 if (nr_cgroups || !target__has_cpu(&target)) {
1957 pr_err("top down event configuration requires system-wide mode (-a)\n");
1958 return -1;
1959 }
1960
1961 if (topdown_filter_events(topdown_attrs, &str,
1962 arch_topdown_check_group(&warn),
1963 pmu_name) < 0) {
1964 pr_err("Out of memory\n");
1965 return -1;
1966 }
1967
1968 if (topdown_attrs[0] && str) {
1969 struct parse_events_error errinfo;
1970 if (warn)
1971 arch_topdown_group_warn();
1972setup_metrics:
1973 parse_events_error__init(&errinfo);
1974 err = parse_events(evsel_list, str, &errinfo);
1975 if (err) {
1976 fprintf(stderr,
1977 "Cannot set up top down events %s: %d\n",
1978 str, err);
1979 parse_events_error__print(&errinfo, str);
1980 parse_events_error__exit(&errinfo);
1981 free(str);
1982 return -1;
1983 }
1984 parse_events_error__exit(&errinfo);
1985 } else {
1986 fprintf(stderr, "System does not support topdown\n");
1987 return -1;
1988 }
1989 free(str);
1990 }
1991
1992 if (!stat_config.topdown_level)
1993 stat_config.topdown_level = TOPDOWN_MAX_LEVEL;
1994
1995 if (!evsel_list->core.nr_entries) {
1996 if (target__has_cpu(&target))
1997 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
1998
1999 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2000 return -1;
2001 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
2002 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
2003 return -1;
2004 }
2005 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
2006 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)
2007 return -1;
2008 }
2009 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2010 return -1;
2011 /* Platform specific attrs */
2012 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0)
2013 return -1;
2014 }
2015
2016 /* Detailed events get appended to the event list: */
2017
2018 if (detailed_run < 1)
2019 return 0;
2020
2021 /* Append detailed run extra attributes: */
2022 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2023 return -1;
2024
2025 if (detailed_run < 2)
2026 return 0;
2027
2028 /* Append very detailed run extra attributes: */
2029 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2030 return -1;
2031
2032 if (detailed_run < 3)
2033 return 0;
2034
2035 /* Append very, very detailed run extra attributes: */
2036 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2037}
2038
2039static const char * const stat_record_usage[] = {
2040 "perf stat record [<options>]",
2041 NULL,
2042};
2043
2044static void init_features(struct perf_session *session)
2045{
2046 int feat;
2047
2048 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2049 perf_header__set_feat(&session->header, feat);
2050
2051 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
2052 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2053 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2054 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2055 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2056}
2057
2058static int __cmd_record(int argc, const char **argv)
2059{
2060 struct perf_session *session;
2061 struct perf_data *data = &perf_stat.data;
2062
2063 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2064 PARSE_OPT_STOP_AT_NON_OPTION);
2065
2066 if (output_name)
2067 data->path = output_name;
2068
2069 if (stat_config.run_count != 1 || forever) {
2070 pr_err("Cannot use -r option with perf stat record.\n");
2071 return -1;
2072 }
2073
2074 session = perf_session__new(data, NULL);
2075 if (IS_ERR(session)) {
2076 pr_err("Perf session creation failed\n");
2077 return PTR_ERR(session);
2078 }
2079
2080 init_features(session);
2081
2082 session->evlist = evsel_list;
2083 perf_stat.session = session;
2084 perf_stat.record = true;
2085 return argc;
2086}
2087
2088static int process_stat_round_event(struct perf_session *session,
2089 union perf_event *event)
2090{
2091 struct perf_record_stat_round *stat_round = &event->stat_round;
2092 struct timespec tsh, *ts = NULL;
2093 const char **argv = session->header.env.cmdline_argv;
2094 int argc = session->header.env.nr_cmdline;
2095
2096 process_counters();
2097
2098 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2099 update_stats(&walltime_nsecs_stats, stat_round->time);
2100
2101 if (stat_config.interval && stat_round->time) {
2102 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2103 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2104 ts = &tsh;
2105 }
2106
2107 print_counters(ts, argc, argv);
2108 return 0;
2109}
2110
2111static
2112int process_stat_config_event(struct perf_session *session,
2113 union perf_event *event)
2114{
2115 struct perf_tool *tool = session->tool;
2116 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2117
2118 perf_event__read_stat_config(&stat_config, &event->stat_config);
2119
2120 if (perf_cpu_map__empty(st->cpus)) {
2121 if (st->aggr_mode != AGGR_UNSET)
2122 pr_warning("warning: processing task data, aggregation mode not set\n");
2123 } else if (st->aggr_mode != AGGR_UNSET) {
2124 stat_config.aggr_mode = st->aggr_mode;
2125 }
2126
2127 if (perf_stat.data.is_pipe)
2128 perf_stat_init_aggr_mode();
2129 else
2130 perf_stat_init_aggr_mode_file(st);
2131
2132 if (stat_config.aggr_map) {
2133 int nr_aggr = stat_config.aggr_map->nr;
2134
2135 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
2136 pr_err("cannot allocate aggr counts\n");
2137 return -1;
2138 }
2139 }
2140 return 0;
2141}
2142
2143static int set_maps(struct perf_stat *st)
2144{
2145 if (!st->cpus || !st->threads)
2146 return 0;
2147
2148 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2149 return -EINVAL;
2150
2151 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2152
2153 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))
2154 return -ENOMEM;
2155
2156 st->maps_allocated = true;
2157 return 0;
2158}
2159
2160static
2161int process_thread_map_event(struct perf_session *session,
2162 union perf_event *event)
2163{
2164 struct perf_tool *tool = session->tool;
2165 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2166
2167 if (st->threads) {
2168 pr_warning("Extra thread map event, ignoring.\n");
2169 return 0;
2170 }
2171
2172 st->threads = thread_map__new_event(&event->thread_map);
2173 if (!st->threads)
2174 return -ENOMEM;
2175
2176 return set_maps(st);
2177}
2178
2179static
2180int process_cpu_map_event(struct perf_session *session,
2181 union perf_event *event)
2182{
2183 struct perf_tool *tool = session->tool;
2184 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2185 struct perf_cpu_map *cpus;
2186
2187 if (st->cpus) {
2188 pr_warning("Extra cpu map event, ignoring.\n");
2189 return 0;
2190 }
2191
2192 cpus = cpu_map__new_data(&event->cpu_map.data);
2193 if (!cpus)
2194 return -ENOMEM;
2195
2196 st->cpus = cpus;
2197 return set_maps(st);
2198}
2199
2200static const char * const stat_report_usage[] = {
2201 "perf stat report [<options>]",
2202 NULL,
2203};
2204
2205static struct perf_stat perf_stat = {
2206 .tool = {
2207 .attr = perf_event__process_attr,
2208 .event_update = perf_event__process_event_update,
2209 .thread_map = process_thread_map_event,
2210 .cpu_map = process_cpu_map_event,
2211 .stat_config = process_stat_config_event,
2212 .stat = perf_event__process_stat_event,
2213 .stat_round = process_stat_round_event,
2214 },
2215 .aggr_mode = AGGR_UNSET,
2216};
2217
2218static int __cmd_report(int argc, const char **argv)
2219{
2220 struct perf_session *session;
2221 const struct option options[] = {
2222 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2223 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2224 "aggregate counts per processor socket", AGGR_SOCKET),
2225 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2226 "aggregate counts per processor die", AGGR_DIE),
2227 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2228 "aggregate counts per physical processor core", AGGR_CORE),
2229 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2230 "aggregate counts per numa node", AGGR_NODE),
2231 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2232 "disable CPU count aggregation", AGGR_NONE),
2233 OPT_END()
2234 };
2235 struct stat st;
2236 int ret;
2237
2238 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2239
2240 if (!input_name || !strlen(input_name)) {
2241 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2242 input_name = "-";
2243 else
2244 input_name = "perf.data";
2245 }
2246
2247 perf_stat__init_shadow_stats();
2248
2249 perf_stat.data.path = input_name;
2250 perf_stat.data.mode = PERF_DATA_MODE_READ;
2251
2252 session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2253 if (IS_ERR(session))
2254 return PTR_ERR(session);
2255
2256 perf_stat.session = session;
2257 stat_config.output = stderr;
2258 evsel_list = session->evlist;
2259
2260 ret = perf_session__process_events(session);
2261 if (ret)
2262 return ret;
2263
2264 perf_session__delete(session);
2265 return 0;
2266}
2267
2268static void setup_system_wide(int forks)
2269{
2270 /*
2271 * Make system wide (-a) the default target if
2272 * no target was specified and one of following
2273 * conditions is met:
2274 *
2275 * - there's no workload specified
2276 * - there is workload specified but all requested
2277 * events are system wide events
2278 */
2279 if (!target__none(&target))
2280 return;
2281
2282 if (!forks)
2283 target.system_wide = true;
2284 else {
2285 struct evsel *counter;
2286
2287 evlist__for_each_entry(evsel_list, counter) {
2288 if (!counter->core.requires_cpu &&
2289 strcmp(counter->name, "duration_time")) {
2290 return;
2291 }
2292 }
2293
2294 if (evsel_list->core.nr_entries)
2295 target.system_wide = true;
2296 }
2297}
2298
2299int cmd_stat(int argc, const char **argv)
2300{
2301 const char * const stat_usage[] = {
2302 "perf stat [<options>] [<command>]",
2303 NULL
2304 };
2305 int status = -EINVAL, run_idx, err;
2306 const char *mode;
2307 FILE *output = stderr;
2308 unsigned int interval, timeout;
2309 const char * const stat_subcommands[] = { "record", "report" };
2310 char errbuf[BUFSIZ];
2311
2312 setlocale(LC_ALL, "");
2313
2314 evsel_list = evlist__new();
2315 if (evsel_list == NULL)
2316 return -ENOMEM;
2317
2318 parse_events__shrink_config_terms();
2319
2320 /* String-parsing callback-based options would segfault when negated */
2321 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2322 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2323 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2324
2325 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2326 (const char **) stat_usage,
2327 PARSE_OPT_STOP_AT_NON_OPTION);
2328
2329 if (stat_config.csv_sep) {
2330 stat_config.csv_output = true;
2331 if (!strcmp(stat_config.csv_sep, "\\t"))
2332 stat_config.csv_sep = "\t";
2333 } else
2334 stat_config.csv_sep = DEFAULT_SEPARATOR;
2335
2336 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
2337 argc = __cmd_record(argc, argv);
2338 if (argc < 0)
2339 return -1;
2340 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
2341 return __cmd_report(argc, argv);
2342
2343 interval = stat_config.interval;
2344 timeout = stat_config.timeout;
2345
2346 /*
2347 * For record command the -o is already taken care of.
2348 */
2349 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2350 output = NULL;
2351
2352 if (output_name && output_fd) {
2353 fprintf(stderr, "cannot use both --output and --log-fd\n");
2354 parse_options_usage(stat_usage, stat_options, "o", 1);
2355 parse_options_usage(NULL, stat_options, "log-fd", 0);
2356 goto out;
2357 }
2358
2359 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2360 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2361 goto out;
2362 }
2363
2364 if (stat_config.metric_only && stat_config.run_count > 1) {
2365 fprintf(stderr, "--metric-only is not supported with -r\n");
2366 goto out;
2367 }
2368
2369 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2370 fprintf(stderr, "--table is only supported with -r\n");
2371 parse_options_usage(stat_usage, stat_options, "r", 1);
2372 parse_options_usage(NULL, stat_options, "table", 0);
2373 goto out;
2374 }
2375
2376 if (output_fd < 0) {
2377 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2378 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2379 goto out;
2380 }
2381
2382 if (!output && !quiet) {
2383 struct timespec tm;
2384 mode = append_file ? "a" : "w";
2385
2386 output = fopen(output_name, mode);
2387 if (!output) {
2388 perror("failed to create output file");
2389 return -1;
2390 }
2391 clock_gettime(CLOCK_REALTIME, &tm);
2392 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2393 } else if (output_fd > 0) {
2394 mode = append_file ? "a" : "w";
2395 output = fdopen(output_fd, mode);
2396 if (!output) {
2397 perror("Failed opening logfd");
2398 return -errno;
2399 }
2400 }
2401
2402 if (stat_config.interval_clear && !isatty(fileno(output))) {
2403 fprintf(stderr, "--interval-clear does not work with output\n");
2404 parse_options_usage(stat_usage, stat_options, "o", 1);
2405 parse_options_usage(NULL, stat_options, "log-fd", 0);
2406 parse_options_usage(NULL, stat_options, "interval-clear", 0);
2407 return -1;
2408 }
2409
2410 stat_config.output = output;
2411
2412 /*
2413 * let the spreadsheet do the pretty-printing
2414 */
2415 if (stat_config.csv_output) {
2416 /* User explicitly passed -B? */
2417 if (big_num_opt == 1) {
2418 fprintf(stderr, "-B option not supported with -x\n");
2419 parse_options_usage(stat_usage, stat_options, "B", 1);
2420 parse_options_usage(NULL, stat_options, "x", 1);
2421 goto out;
2422 } else /* Nope, so disable big number formatting */
2423 stat_config.big_num = false;
2424 } else if (big_num_opt == 0) /* User passed --no-big-num */
2425 stat_config.big_num = false;
2426
2427 err = target__validate(&target);
2428 if (err) {
2429 target__strerror(&target, err, errbuf, BUFSIZ);
2430 pr_warning("%s\n", errbuf);
2431 }
2432
2433 setup_system_wide(argc);
2434
2435 /*
2436 * Display user/system times only for single
2437 * run and when there's specified tracee.
2438 */
2439 if ((stat_config.run_count == 1) && target__none(&target))
2440 stat_config.ru_display = true;
2441
2442 if (stat_config.run_count < 0) {
2443 pr_err("Run count must be a positive number\n");
2444 parse_options_usage(stat_usage, stat_options, "r", 1);
2445 goto out;
2446 } else if (stat_config.run_count == 0) {
2447 forever = true;
2448 stat_config.run_count = 1;
2449 }
2450
2451 if (stat_config.walltime_run_table) {
2452 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2453 if (!stat_config.walltime_run) {
2454 pr_err("failed to setup -r option");
2455 goto out;
2456 }
2457 }
2458
2459 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2460 !target__has_task(&target)) {
2461 if (!target.system_wide || target.cpu_list) {
2462 fprintf(stderr, "The --per-thread option is only "
2463 "available when monitoring via -p -t -a "
2464 "options or only --per-thread.\n");
2465 parse_options_usage(NULL, stat_options, "p", 1);
2466 parse_options_usage(NULL, stat_options, "t", 1);
2467 goto out;
2468 }
2469 }
2470
2471 /*
2472 * no_aggr, cgroup are for system-wide only
2473 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2474 */
2475 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2476 stat_config.aggr_mode != AGGR_THREAD) ||
2477 (nr_cgroups || stat_config.cgroup_list)) &&
2478 !target__has_cpu(&target)) {
2479 fprintf(stderr, "both cgroup and no-aggregation "
2480 "modes only available in system-wide mode\n");
2481
2482 parse_options_usage(stat_usage, stat_options, "G", 1);
2483 parse_options_usage(NULL, stat_options, "A", 1);
2484 parse_options_usage(NULL, stat_options, "a", 1);
2485 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2486 goto out;
2487 }
2488
2489 if (stat_config.iostat_run) {
2490 status = iostat_prepare(evsel_list, &stat_config);
2491 if (status)
2492 goto out;
2493 if (iostat_mode == IOSTAT_LIST) {
2494 iostat_list(evsel_list, &stat_config);
2495 goto out;
2496 } else if (verbose > 0)
2497 iostat_list(evsel_list, &stat_config);
2498 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2499 target.system_wide = true;
2500 }
2501
2502 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2503 target.per_thread = true;
2504
2505 stat_config.system_wide = target.system_wide;
2506 if (target.cpu_list) {
2507 stat_config.user_requested_cpu_list = strdup(target.cpu_list);
2508 if (!stat_config.user_requested_cpu_list) {
2509 status = -ENOMEM;
2510 goto out;
2511 }
2512 }
2513
2514 /*
2515 * Metric parsing needs to be delayed as metrics may optimize events
2516 * knowing the target is system-wide.
2517 */
2518 if (metrics) {
2519 metricgroup__parse_groups(evsel_list, metrics,
2520 stat_config.metric_no_group,
2521 stat_config.metric_no_merge,
2522 stat_config.user_requested_cpu_list,
2523 stat_config.system_wide,
2524 &stat_config.metric_events);
2525 zfree(&metrics);
2526 }
2527 perf_stat__collect_metric_expr(evsel_list);
2528 perf_stat__init_shadow_stats();
2529
2530 if (add_default_attributes())
2531 goto out;
2532
2533 if (stat_config.cgroup_list) {
2534 if (nr_cgroups > 0) {
2535 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2536 parse_options_usage(stat_usage, stat_options, "G", 1);
2537 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2538 goto out;
2539 }
2540
2541 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2542 &stat_config.metric_events, true) < 0) {
2543 parse_options_usage(stat_usage, stat_options,
2544 "for-each-cgroup", 0);
2545 goto out;
2546 }
2547 }
2548
2549 if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) {
2550 pr_err("failed to use cpu list %s\n", target.cpu_list);
2551 goto out;
2552 }
2553
2554 target.hybrid = perf_pmu__has_hybrid();
2555 if (evlist__create_maps(evsel_list, &target) < 0) {
2556 if (target__has_task(&target)) {
2557 pr_err("Problems finding threads of monitor\n");
2558 parse_options_usage(stat_usage, stat_options, "p", 1);
2559 parse_options_usage(NULL, stat_options, "t", 1);
2560 } else if (target__has_cpu(&target)) {
2561 perror("failed to parse CPUs map");
2562 parse_options_usage(stat_usage, stat_options, "C", 1);
2563 parse_options_usage(NULL, stat_options, "a", 1);
2564 }
2565 goto out;
2566 }
2567
2568 evlist__check_cpu_maps(evsel_list);
2569
2570 /*
2571 * Initialize thread_map with comm names,
2572 * so we could print it out on output.
2573 */
2574 if (stat_config.aggr_mode == AGGR_THREAD) {
2575 thread_map__read_comms(evsel_list->core.threads);
2576 }
2577
2578 if (stat_config.aggr_mode == AGGR_NODE)
2579 cpu__setup_cpunode_map();
2580
2581 if (stat_config.times && interval)
2582 interval_count = true;
2583 else if (stat_config.times && !interval) {
2584 pr_err("interval-count option should be used together with "
2585 "interval-print.\n");
2586 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2587 parse_options_usage(stat_usage, stat_options, "I", 1);
2588 goto out;
2589 }
2590
2591 if (timeout && timeout < 100) {
2592 if (timeout < 10) {
2593 pr_err("timeout must be >= 10ms.\n");
2594 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2595 goto out;
2596 } else
2597 pr_warning("timeout < 100ms. "
2598 "The overhead percentage could be high in some cases. "
2599 "Please proceed with caution.\n");
2600 }
2601 if (timeout && interval) {
2602 pr_err("timeout option is not supported with interval-print.\n");
2603 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2604 parse_options_usage(stat_usage, stat_options, "I", 1);
2605 goto out;
2606 }
2607
2608 if (perf_stat_init_aggr_mode())
2609 goto out;
2610
2611 if (evlist__alloc_stats(&stat_config, evsel_list, interval))
2612 goto out;
2613
2614 /*
2615 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2616 * while avoiding that older tools show confusing messages.
2617 *
2618 * However for pipe sessions we need to keep it zero,
2619 * because script's perf_evsel__check_attr is triggered
2620 * by attr->sample_type != 0, and we can't run it on
2621 * stat sessions.
2622 */
2623 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2624
2625 /*
2626 * We dont want to block the signals - that would cause
2627 * child tasks to inherit that and Ctrl-C would not work.
2628 * What we want is for Ctrl-C to work in the exec()-ed
2629 * task, but being ignored by perf stat itself:
2630 */
2631 atexit(sig_atexit);
2632 if (!forever)
2633 signal(SIGINT, skip_signal);
2634 signal(SIGCHLD, skip_signal);
2635 signal(SIGALRM, skip_signal);
2636 signal(SIGABRT, skip_signal);
2637
2638 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2639 goto out;
2640
2641 /* Enable ignoring missing threads when -p option is defined. */
2642 evlist__first(evsel_list)->ignore_missing_thread = target.pid;
2643 status = 0;
2644 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2645 if (stat_config.run_count != 1 && verbose > 0)
2646 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2647 run_idx + 1);
2648
2649 if (run_idx != 0)
2650 evlist__reset_prev_raw_counts(evsel_list);
2651
2652 status = run_perf_stat(argc, argv, run_idx);
2653 if (forever && status != -1 && !interval) {
2654 print_counters(NULL, argc, argv);
2655 perf_stat__reset_stats();
2656 }
2657 }
2658
2659 if (!forever && status != -1 && (!interval || stat_config.summary))
2660 print_counters(NULL, argc, argv);
2661
2662 evlist__finalize_ctlfd(evsel_list);
2663
2664 if (STAT_RECORD) {
2665 /*
2666 * We synthesize the kernel mmap record just so that older tools
2667 * don't emit warnings about not being able to resolve symbols
2668 * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2669 * a saner message about no samples being in the perf.data file.
2670 *
2671 * This also serves to suppress a warning about f_header.data.size == 0
2672 * in header.c at the moment 'perf stat record' gets introduced, which
2673 * is not really needed once we start adding the stat specific PERF_RECORD_
2674 * records, but the need to suppress the kptr_restrict messages in older
2675 * tools remain -acme
2676 */
2677 int fd = perf_data__fd(&perf_stat.data);
2678
2679 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2680 process_synthesized_event,
2681 &perf_stat.session->machines.host);
2682 if (err) {
2683 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2684 "older tools may produce warnings about this file\n.");
2685 }
2686
2687 if (!interval) {
2688 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2689 pr_err("failed to write stat round event\n");
2690 }
2691
2692 if (!perf_stat.data.is_pipe) {
2693 perf_stat.session->header.data_size += perf_stat.bytes_written;
2694 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2695 }
2696
2697 evlist__close(evsel_list);
2698 perf_session__delete(perf_stat.session);
2699 }
2700
2701 perf_stat__exit_aggr_mode();
2702 evlist__free_stats(evsel_list);
2703out:
2704 if (stat_config.iostat_run)
2705 iostat_release(evsel_list);
2706
2707 zfree(&stat_config.walltime_run);
2708 zfree(&stat_config.user_requested_cpu_list);
2709
2710 if (smi_cost && smi_reset)
2711 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2712
2713 evlist__delete(evsel_list);
2714
2715 metricgroup__rblist_exit(&stat_config.metric_events);
2716 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2717
2718 return status;
2719}
1/*
2 * builtin-stat.c
3 *
4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
6 *
7 * Sample output:
8
9 $ perf stat ./hackbench 10
10
11 Time: 0.118
12
13 Performance counter stats for './hackbench 10':
14
15 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
26
27 0.154822978 seconds time elapsed
28
29 *
30 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
31 *
32 * Improvements and fixes by:
33 *
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
39 * Jaswinder Singh Rajput <jaswinder@kernel.org>
40 *
41 * Released under the GPL v2. (and only v2, not any later version)
42 */
43
44#include "perf.h"
45#include "builtin.h"
46#include "util/cgroup.h"
47#include "util/util.h"
48#include <subcmd/parse-options.h>
49#include "util/parse-events.h"
50#include "util/pmu.h"
51#include "util/event.h"
52#include "util/evlist.h"
53#include "util/evsel.h"
54#include "util/debug.h"
55#include "util/drv_configs.h"
56#include "util/color.h"
57#include "util/stat.h"
58#include "util/header.h"
59#include "util/cpumap.h"
60#include "util/thread.h"
61#include "util/thread_map.h"
62#include "util/counts.h"
63#include "util/group.h"
64#include "util/session.h"
65#include "util/tool.h"
66#include "util/group.h"
67#include "asm/bug.h"
68
69#include <linux/time64.h>
70#include <api/fs/fs.h>
71#include <stdlib.h>
72#include <sys/prctl.h>
73#include <locale.h>
74#include <math.h>
75
76#define DEFAULT_SEPARATOR " "
77#define CNTR_NOT_SUPPORTED "<not supported>"
78#define CNTR_NOT_COUNTED "<not counted>"
79
80static void print_counters(struct timespec *ts, int argc, const char **argv);
81
82/* Default events used for perf stat -T */
83static const char *transaction_attrs = {
84 "task-clock,"
85 "{"
86 "instructions,"
87 "cycles,"
88 "cpu/cycles-t/,"
89 "cpu/tx-start/,"
90 "cpu/el-start/,"
91 "cpu/cycles-ct/"
92 "}"
93};
94
95/* More limited version when the CPU does not have all events. */
96static const char * transaction_limited_attrs = {
97 "task-clock,"
98 "{"
99 "instructions,"
100 "cycles,"
101 "cpu/cycles-t/,"
102 "cpu/tx-start/"
103 "}"
104};
105
106static const char * topdown_attrs[] = {
107 "topdown-total-slots",
108 "topdown-slots-retired",
109 "topdown-recovery-bubbles",
110 "topdown-fetch-bubbles",
111 "topdown-slots-issued",
112 NULL,
113};
114
115static struct perf_evlist *evsel_list;
116
117static struct target target = {
118 .uid = UINT_MAX,
119};
120
121typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
122
123static int run_count = 1;
124static bool no_inherit = false;
125static volatile pid_t child_pid = -1;
126static bool null_run = false;
127static int detailed_run = 0;
128static bool transaction_run;
129static bool topdown_run = false;
130static bool big_num = true;
131static int big_num_opt = -1;
132static const char *csv_sep = NULL;
133static bool csv_output = false;
134static bool group = false;
135static const char *pre_cmd = NULL;
136static const char *post_cmd = NULL;
137static bool sync_run = false;
138static unsigned int initial_delay = 0;
139static unsigned int unit_width = 4; /* strlen("unit") */
140static bool forever = false;
141static bool metric_only = false;
142static bool force_metric_only = false;
143static struct timespec ref_time;
144static struct cpu_map *aggr_map;
145static aggr_get_id_t aggr_get_id;
146static bool append_file;
147static const char *output_name;
148static int output_fd;
149
150struct perf_stat {
151 bool record;
152 struct perf_data_file file;
153 struct perf_session *session;
154 u64 bytes_written;
155 struct perf_tool tool;
156 bool maps_allocated;
157 struct cpu_map *cpus;
158 struct thread_map *threads;
159 enum aggr_mode aggr_mode;
160};
161
162static struct perf_stat perf_stat;
163#define STAT_RECORD perf_stat.record
164
165static volatile int done = 0;
166
167static struct perf_stat_config stat_config = {
168 .aggr_mode = AGGR_GLOBAL,
169 .scale = true,
170};
171
172static inline void diff_timespec(struct timespec *r, struct timespec *a,
173 struct timespec *b)
174{
175 r->tv_sec = a->tv_sec - b->tv_sec;
176 if (a->tv_nsec < b->tv_nsec) {
177 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
178 r->tv_sec--;
179 } else {
180 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
181 }
182}
183
184static void perf_stat__reset_stats(void)
185{
186 perf_evlist__reset_stats(evsel_list);
187 perf_stat__reset_shadow_stats();
188}
189
190static int create_perf_stat_counter(struct perf_evsel *evsel)
191{
192 struct perf_event_attr *attr = &evsel->attr;
193
194 if (stat_config.scale)
195 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
196 PERF_FORMAT_TOTAL_TIME_RUNNING;
197
198 attr->inherit = !no_inherit;
199
200 /*
201 * Some events get initialized with sample_(period/type) set,
202 * like tracepoints. Clear it up for counting.
203 */
204 attr->sample_period = 0;
205
206 /*
207 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
208 * while avoiding that older tools show confusing messages.
209 *
210 * However for pipe sessions we need to keep it zero,
211 * because script's perf_evsel__check_attr is triggered
212 * by attr->sample_type != 0, and we can't run it on
213 * stat sessions.
214 */
215 if (!(STAT_RECORD && perf_stat.file.is_pipe))
216 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
217
218 /*
219 * Disabling all counters initially, they will be enabled
220 * either manually by us or by kernel via enable_on_exec
221 * set later.
222 */
223 if (perf_evsel__is_group_leader(evsel)) {
224 attr->disabled = 1;
225
226 /*
227 * In case of initial_delay we enable tracee
228 * events manually.
229 */
230 if (target__none(&target) && !initial_delay)
231 attr->enable_on_exec = 1;
232 }
233
234 if (target__has_cpu(&target))
235 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
236
237 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
238}
239
240/*
241 * Does the counter have nsecs as a unit?
242 */
243static inline int nsec_counter(struct perf_evsel *evsel)
244{
245 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
246 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
247 return 1;
248
249 return 0;
250}
251
252static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
253 union perf_event *event,
254 struct perf_sample *sample __maybe_unused,
255 struct machine *machine __maybe_unused)
256{
257 if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) {
258 pr_err("failed to write perf data, error: %m\n");
259 return -1;
260 }
261
262 perf_stat.bytes_written += event->header.size;
263 return 0;
264}
265
266static int write_stat_round_event(u64 tm, u64 type)
267{
268 return perf_event__synthesize_stat_round(NULL, tm, type,
269 process_synthesized_event,
270 NULL);
271}
272
273#define WRITE_STAT_ROUND_EVENT(time, interval) \
274 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
275
276#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
277
278static int
279perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
280 struct perf_counts_values *count)
281{
282 struct perf_sample_id *sid = SID(counter, cpu, thread);
283
284 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
285 process_synthesized_event, NULL);
286}
287
288/*
289 * Read out the results of a single counter:
290 * do not aggregate counts across CPUs in system-wide mode
291 */
292static int read_counter(struct perf_evsel *counter)
293{
294 int nthreads = thread_map__nr(evsel_list->threads);
295 int ncpus, cpu, thread;
296
297 if (target__has_cpu(&target))
298 ncpus = perf_evsel__nr_cpus(counter);
299 else
300 ncpus = 1;
301
302 if (!counter->supported)
303 return -ENOENT;
304
305 if (counter->system_wide)
306 nthreads = 1;
307
308 for (thread = 0; thread < nthreads; thread++) {
309 for (cpu = 0; cpu < ncpus; cpu++) {
310 struct perf_counts_values *count;
311
312 count = perf_counts(counter->counts, cpu, thread);
313 if (perf_evsel__read(counter, cpu, thread, count))
314 return -1;
315
316 if (STAT_RECORD) {
317 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
318 pr_err("failed to write stat event\n");
319 return -1;
320 }
321 }
322
323 if (verbose > 1) {
324 fprintf(stat_config.output,
325 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
326 perf_evsel__name(counter),
327 cpu,
328 count->val, count->ena, count->run);
329 }
330 }
331 }
332
333 return 0;
334}
335
336static void read_counters(void)
337{
338 struct perf_evsel *counter;
339
340 evlist__for_each_entry(evsel_list, counter) {
341 if (read_counter(counter))
342 pr_debug("failed to read counter %s\n", counter->name);
343
344 if (perf_stat_process_counter(&stat_config, counter))
345 pr_warning("failed to process counter %s\n", counter->name);
346 }
347}
348
349static void process_interval(void)
350{
351 struct timespec ts, rs;
352
353 read_counters();
354
355 clock_gettime(CLOCK_MONOTONIC, &ts);
356 diff_timespec(&rs, &ts, &ref_time);
357
358 if (STAT_RECORD) {
359 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
360 pr_err("failed to write stat round event\n");
361 }
362
363 print_counters(&rs, 0, NULL);
364}
365
366static void enable_counters(void)
367{
368 if (initial_delay)
369 usleep(initial_delay * USEC_PER_MSEC);
370
371 /*
372 * We need to enable counters only if:
373 * - we don't have tracee (attaching to task or cpu)
374 * - we have initial delay configured
375 */
376 if (!target__none(&target) || initial_delay)
377 perf_evlist__enable(evsel_list);
378}
379
380static void disable_counters(void)
381{
382 /*
383 * If we don't have tracee (attaching to task or cpu), counters may
384 * still be running. To get accurate group ratios, we must stop groups
385 * from counting before reading their constituent counters.
386 */
387 if (!target__none(&target))
388 perf_evlist__disable(evsel_list);
389}
390
391static volatile int workload_exec_errno;
392
393/*
394 * perf_evlist__prepare_workload will send a SIGUSR1
395 * if the fork fails, since we asked by setting its
396 * want_signal to true.
397 */
398static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
399 void *ucontext __maybe_unused)
400{
401 workload_exec_errno = info->si_value.sival_int;
402}
403
404static bool has_unit(struct perf_evsel *counter)
405{
406 return counter->unit && *counter->unit;
407}
408
409static bool has_scale(struct perf_evsel *counter)
410{
411 return counter->scale != 1;
412}
413
414static int perf_stat_synthesize_config(bool is_pipe)
415{
416 struct perf_evsel *counter;
417 int err;
418
419 if (is_pipe) {
420 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
421 process_synthesized_event);
422 if (err < 0) {
423 pr_err("Couldn't synthesize attrs.\n");
424 return err;
425 }
426 }
427
428 /*
429 * Synthesize other events stuff not carried within
430 * attr event - unit, scale, name
431 */
432 evlist__for_each_entry(evsel_list, counter) {
433 if (!counter->supported)
434 continue;
435
436 /*
437 * Synthesize unit and scale only if it's defined.
438 */
439 if (has_unit(counter)) {
440 err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
441 if (err < 0) {
442 pr_err("Couldn't synthesize evsel unit.\n");
443 return err;
444 }
445 }
446
447 if (has_scale(counter)) {
448 err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
449 if (err < 0) {
450 pr_err("Couldn't synthesize evsel scale.\n");
451 return err;
452 }
453 }
454
455 if (counter->own_cpus) {
456 err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
457 if (err < 0) {
458 pr_err("Couldn't synthesize evsel scale.\n");
459 return err;
460 }
461 }
462
463 /*
464 * Name is needed only for pipe output,
465 * perf.data carries event names.
466 */
467 if (is_pipe) {
468 err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
469 if (err < 0) {
470 pr_err("Couldn't synthesize evsel name.\n");
471 return err;
472 }
473 }
474 }
475
476 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
477 process_synthesized_event,
478 NULL);
479 if (err < 0) {
480 pr_err("Couldn't synthesize thread map.\n");
481 return err;
482 }
483
484 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
485 process_synthesized_event, NULL);
486 if (err < 0) {
487 pr_err("Couldn't synthesize thread map.\n");
488 return err;
489 }
490
491 err = perf_event__synthesize_stat_config(NULL, &stat_config,
492 process_synthesized_event, NULL);
493 if (err < 0) {
494 pr_err("Couldn't synthesize config.\n");
495 return err;
496 }
497
498 return 0;
499}
500
501#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
502
503static int __store_counter_ids(struct perf_evsel *counter,
504 struct cpu_map *cpus,
505 struct thread_map *threads)
506{
507 int cpu, thread;
508
509 for (cpu = 0; cpu < cpus->nr; cpu++) {
510 for (thread = 0; thread < threads->nr; thread++) {
511 int fd = FD(counter, cpu, thread);
512
513 if (perf_evlist__id_add_fd(evsel_list, counter,
514 cpu, thread, fd) < 0)
515 return -1;
516 }
517 }
518
519 return 0;
520}
521
522static int store_counter_ids(struct perf_evsel *counter)
523{
524 struct cpu_map *cpus = counter->cpus;
525 struct thread_map *threads = counter->threads;
526
527 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
528 return -ENOMEM;
529
530 return __store_counter_ids(counter, cpus, threads);
531}
532
533static int __run_perf_stat(int argc, const char **argv)
534{
535 int interval = stat_config.interval;
536 char msg[512];
537 unsigned long long t0, t1;
538 struct perf_evsel *counter;
539 struct timespec ts;
540 size_t l;
541 int status = 0;
542 const bool forks = (argc > 0);
543 bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false;
544 struct perf_evsel_config_term *err_term;
545
546 if (interval) {
547 ts.tv_sec = interval / USEC_PER_MSEC;
548 ts.tv_nsec = (interval % USEC_PER_MSEC) * NSEC_PER_MSEC;
549 } else {
550 ts.tv_sec = 1;
551 ts.tv_nsec = 0;
552 }
553
554 if (forks) {
555 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
556 workload_exec_failed_signal) < 0) {
557 perror("failed to prepare workload");
558 return -1;
559 }
560 child_pid = evsel_list->workload.pid;
561 }
562
563 if (group)
564 perf_evlist__set_leader(evsel_list);
565
566 evlist__for_each_entry(evsel_list, counter) {
567try_again:
568 if (create_perf_stat_counter(counter) < 0) {
569 /*
570 * PPC returns ENXIO for HW counters until 2.6.37
571 * (behavior changed with commit b0a873e).
572 */
573 if (errno == EINVAL || errno == ENOSYS ||
574 errno == ENOENT || errno == EOPNOTSUPP ||
575 errno == ENXIO) {
576 if (verbose)
577 ui__warning("%s event is not supported by the kernel.\n",
578 perf_evsel__name(counter));
579 counter->supported = false;
580
581 if ((counter->leader != counter) ||
582 !(counter->leader->nr_members > 1))
583 continue;
584 } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
585 if (verbose)
586 ui__warning("%s\n", msg);
587 goto try_again;
588 }
589
590 perf_evsel__open_strerror(counter, &target,
591 errno, msg, sizeof(msg));
592 ui__error("%s\n", msg);
593
594 if (child_pid != -1)
595 kill(child_pid, SIGTERM);
596
597 return -1;
598 }
599 counter->supported = true;
600
601 l = strlen(counter->unit);
602 if (l > unit_width)
603 unit_width = l;
604
605 if (STAT_RECORD && store_counter_ids(counter))
606 return -1;
607 }
608
609 if (perf_evlist__apply_filters(evsel_list, &counter)) {
610 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
611 counter->filter, perf_evsel__name(counter), errno,
612 str_error_r(errno, msg, sizeof(msg)));
613 return -1;
614 }
615
616 if (perf_evlist__apply_drv_configs(evsel_list, &counter, &err_term)) {
617 error("failed to set config \"%s\" on event %s with %d (%s)\n",
618 err_term->val.drv_cfg, perf_evsel__name(counter), errno,
619 str_error_r(errno, msg, sizeof(msg)));
620 return -1;
621 }
622
623 if (STAT_RECORD) {
624 int err, fd = perf_data_file__fd(&perf_stat.file);
625
626 if (is_pipe) {
627 err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file));
628 } else {
629 err = perf_session__write_header(perf_stat.session, evsel_list,
630 fd, false);
631 }
632
633 if (err < 0)
634 return err;
635
636 err = perf_stat_synthesize_config(is_pipe);
637 if (err < 0)
638 return err;
639 }
640
641 /*
642 * Enable counters and exec the command:
643 */
644 t0 = rdclock();
645 clock_gettime(CLOCK_MONOTONIC, &ref_time);
646
647 if (forks) {
648 perf_evlist__start_workload(evsel_list);
649 enable_counters();
650
651 if (interval) {
652 while (!waitpid(child_pid, &status, WNOHANG)) {
653 nanosleep(&ts, NULL);
654 process_interval();
655 }
656 }
657 wait(&status);
658
659 if (workload_exec_errno) {
660 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
661 pr_err("Workload failed: %s\n", emsg);
662 return -1;
663 }
664
665 if (WIFSIGNALED(status))
666 psignal(WTERMSIG(status), argv[0]);
667 } else {
668 enable_counters();
669 while (!done) {
670 nanosleep(&ts, NULL);
671 if (interval)
672 process_interval();
673 }
674 }
675
676 disable_counters();
677
678 t1 = rdclock();
679
680 update_stats(&walltime_nsecs_stats, t1 - t0);
681
682 /*
683 * Closing a group leader splits the group, and as we only disable
684 * group leaders, results in remaining events becoming enabled. To
685 * avoid arbitrary skew, we must read all counters before closing any
686 * group leaders.
687 */
688 read_counters();
689 perf_evlist__close(evsel_list);
690
691 return WEXITSTATUS(status);
692}
693
694static int run_perf_stat(int argc, const char **argv)
695{
696 int ret;
697
698 if (pre_cmd) {
699 ret = system(pre_cmd);
700 if (ret)
701 return ret;
702 }
703
704 if (sync_run)
705 sync();
706
707 ret = __run_perf_stat(argc, argv);
708 if (ret)
709 return ret;
710
711 if (post_cmd) {
712 ret = system(post_cmd);
713 if (ret)
714 return ret;
715 }
716
717 return ret;
718}
719
720static void print_running(u64 run, u64 ena)
721{
722 if (csv_output) {
723 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
724 csv_sep,
725 run,
726 csv_sep,
727 ena ? 100.0 * run / ena : 100.0);
728 } else if (run != ena) {
729 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
730 }
731}
732
733static void print_noise_pct(double total, double avg)
734{
735 double pct = rel_stddev_stats(total, avg);
736
737 if (csv_output)
738 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
739 else if (pct)
740 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
741}
742
743static void print_noise(struct perf_evsel *evsel, double avg)
744{
745 struct perf_stat_evsel *ps;
746
747 if (run_count == 1)
748 return;
749
750 ps = evsel->priv;
751 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
752}
753
754static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
755{
756 switch (stat_config.aggr_mode) {
757 case AGGR_CORE:
758 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
759 cpu_map__id_to_socket(id),
760 csv_output ? 0 : -8,
761 cpu_map__id_to_cpu(id),
762 csv_sep,
763 csv_output ? 0 : 4,
764 nr,
765 csv_sep);
766 break;
767 case AGGR_SOCKET:
768 fprintf(stat_config.output, "S%*d%s%*d%s",
769 csv_output ? 0 : -5,
770 id,
771 csv_sep,
772 csv_output ? 0 : 4,
773 nr,
774 csv_sep);
775 break;
776 case AGGR_NONE:
777 fprintf(stat_config.output, "CPU%*d%s",
778 csv_output ? 0 : -4,
779 perf_evsel__cpus(evsel)->map[id], csv_sep);
780 break;
781 case AGGR_THREAD:
782 fprintf(stat_config.output, "%*s-%*d%s",
783 csv_output ? 0 : 16,
784 thread_map__comm(evsel->threads, id),
785 csv_output ? 0 : -8,
786 thread_map__pid(evsel->threads, id),
787 csv_sep);
788 break;
789 case AGGR_GLOBAL:
790 case AGGR_UNSET:
791 default:
792 break;
793 }
794}
795
796struct outstate {
797 FILE *fh;
798 bool newline;
799 const char *prefix;
800 int nfields;
801 int id, nr;
802 struct perf_evsel *evsel;
803};
804
805#define METRIC_LEN 35
806
807static void new_line_std(void *ctx)
808{
809 struct outstate *os = ctx;
810
811 os->newline = true;
812}
813
814static void do_new_line_std(struct outstate *os)
815{
816 fputc('\n', os->fh);
817 fputs(os->prefix, os->fh);
818 aggr_printout(os->evsel, os->id, os->nr);
819 if (stat_config.aggr_mode == AGGR_NONE)
820 fprintf(os->fh, " ");
821 fprintf(os->fh, " ");
822}
823
824static void print_metric_std(void *ctx, const char *color, const char *fmt,
825 const char *unit, double val)
826{
827 struct outstate *os = ctx;
828 FILE *out = os->fh;
829 int n;
830 bool newline = os->newline;
831
832 os->newline = false;
833
834 if (unit == NULL || fmt == NULL) {
835 fprintf(out, "%-*s", METRIC_LEN, "");
836 return;
837 }
838
839 if (newline)
840 do_new_line_std(os);
841
842 n = fprintf(out, " # ");
843 if (color)
844 n += color_fprintf(out, color, fmt, val);
845 else
846 n += fprintf(out, fmt, val);
847 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
848}
849
850static void new_line_csv(void *ctx)
851{
852 struct outstate *os = ctx;
853 int i;
854
855 fputc('\n', os->fh);
856 if (os->prefix)
857 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
858 aggr_printout(os->evsel, os->id, os->nr);
859 for (i = 0; i < os->nfields; i++)
860 fputs(csv_sep, os->fh);
861}
862
863static void print_metric_csv(void *ctx,
864 const char *color __maybe_unused,
865 const char *fmt, const char *unit, double val)
866{
867 struct outstate *os = ctx;
868 FILE *out = os->fh;
869 char buf[64], *vals, *ends;
870
871 if (unit == NULL || fmt == NULL) {
872 fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
873 return;
874 }
875 snprintf(buf, sizeof(buf), fmt, val);
876 vals = buf;
877 while (isspace(*vals))
878 vals++;
879 ends = vals;
880 while (isdigit(*ends) || *ends == '.')
881 ends++;
882 *ends = 0;
883 while (isspace(*unit))
884 unit++;
885 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
886}
887
888#define METRIC_ONLY_LEN 20
889
890/* Filter out some columns that don't work well in metrics only mode */
891
892static bool valid_only_metric(const char *unit)
893{
894 if (!unit)
895 return false;
896 if (strstr(unit, "/sec") ||
897 strstr(unit, "hz") ||
898 strstr(unit, "Hz") ||
899 strstr(unit, "CPUs utilized"))
900 return false;
901 return true;
902}
903
904static const char *fixunit(char *buf, struct perf_evsel *evsel,
905 const char *unit)
906{
907 if (!strncmp(unit, "of all", 6)) {
908 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
909 unit);
910 return buf;
911 }
912 return unit;
913}
914
915static void print_metric_only(void *ctx, const char *color, const char *fmt,
916 const char *unit, double val)
917{
918 struct outstate *os = ctx;
919 FILE *out = os->fh;
920 int n;
921 char buf[1024];
922 unsigned mlen = METRIC_ONLY_LEN;
923
924 if (!valid_only_metric(unit))
925 return;
926 unit = fixunit(buf, os->evsel, unit);
927 if (color)
928 n = color_fprintf(out, color, fmt, val);
929 else
930 n = fprintf(out, fmt, val);
931 if (n > METRIC_ONLY_LEN)
932 n = METRIC_ONLY_LEN;
933 if (mlen < strlen(unit))
934 mlen = strlen(unit) + 1;
935 fprintf(out, "%*s", mlen - n, "");
936}
937
938static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
939 const char *fmt,
940 const char *unit, double val)
941{
942 struct outstate *os = ctx;
943 FILE *out = os->fh;
944 char buf[64], *vals, *ends;
945 char tbuf[1024];
946
947 if (!valid_only_metric(unit))
948 return;
949 unit = fixunit(tbuf, os->evsel, unit);
950 snprintf(buf, sizeof buf, fmt, val);
951 vals = buf;
952 while (isspace(*vals))
953 vals++;
954 ends = vals;
955 while (isdigit(*ends) || *ends == '.')
956 ends++;
957 *ends = 0;
958 fprintf(out, "%s%s", vals, csv_sep);
959}
960
961static void new_line_metric(void *ctx __maybe_unused)
962{
963}
964
965static void print_metric_header(void *ctx, const char *color __maybe_unused,
966 const char *fmt __maybe_unused,
967 const char *unit, double val __maybe_unused)
968{
969 struct outstate *os = ctx;
970 char tbuf[1024];
971
972 if (!valid_only_metric(unit))
973 return;
974 unit = fixunit(tbuf, os->evsel, unit);
975 if (csv_output)
976 fprintf(os->fh, "%s%s", unit, csv_sep);
977 else
978 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
979}
980
981static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
982{
983 FILE *output = stat_config.output;
984 double msecs = avg / NSEC_PER_MSEC;
985 const char *fmt_v, *fmt_n;
986 char name[25];
987
988 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
989 fmt_n = csv_output ? "%s" : "%-25s";
990
991 aggr_printout(evsel, id, nr);
992
993 scnprintf(name, sizeof(name), "%s%s",
994 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
995
996 fprintf(output, fmt_v, msecs, csv_sep);
997
998 if (csv_output)
999 fprintf(output, "%s%s", evsel->unit, csv_sep);
1000 else
1001 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
1002
1003 fprintf(output, fmt_n, name);
1004
1005 if (evsel->cgrp)
1006 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1007}
1008
1009static int first_shadow_cpu(struct perf_evsel *evsel, int id)
1010{
1011 int i;
1012
1013 if (!aggr_get_id)
1014 return 0;
1015
1016 if (stat_config.aggr_mode == AGGR_NONE)
1017 return id;
1018
1019 if (stat_config.aggr_mode == AGGR_GLOBAL)
1020 return 0;
1021
1022 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
1023 int cpu2 = perf_evsel__cpus(evsel)->map[i];
1024
1025 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
1026 return cpu2;
1027 }
1028 return 0;
1029}
1030
1031static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1032{
1033 FILE *output = stat_config.output;
1034 double sc = evsel->scale;
1035 const char *fmt;
1036
1037 if (csv_output) {
1038 fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
1039 } else {
1040 if (big_num)
1041 fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
1042 else
1043 fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
1044 }
1045
1046 aggr_printout(evsel, id, nr);
1047
1048 fprintf(output, fmt, avg, csv_sep);
1049
1050 if (evsel->unit)
1051 fprintf(output, "%-*s%s",
1052 csv_output ? 0 : unit_width,
1053 evsel->unit, csv_sep);
1054
1055 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1056
1057 if (evsel->cgrp)
1058 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1059}
1060
1061static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1062 char *prefix, u64 run, u64 ena, double noise)
1063{
1064 struct perf_stat_output_ctx out;
1065 struct outstate os = {
1066 .fh = stat_config.output,
1067 .prefix = prefix ? prefix : "",
1068 .id = id,
1069 .nr = nr,
1070 .evsel = counter,
1071 };
1072 print_metric_t pm = print_metric_std;
1073 void (*nl)(void *);
1074
1075 if (metric_only) {
1076 nl = new_line_metric;
1077 if (csv_output)
1078 pm = print_metric_only_csv;
1079 else
1080 pm = print_metric_only;
1081 } else
1082 nl = new_line_std;
1083
1084 if (csv_output && !metric_only) {
1085 static int aggr_fields[] = {
1086 [AGGR_GLOBAL] = 0,
1087 [AGGR_THREAD] = 1,
1088 [AGGR_NONE] = 1,
1089 [AGGR_SOCKET] = 2,
1090 [AGGR_CORE] = 2,
1091 };
1092
1093 pm = print_metric_csv;
1094 nl = new_line_csv;
1095 os.nfields = 3;
1096 os.nfields += aggr_fields[stat_config.aggr_mode];
1097 if (counter->cgrp)
1098 os.nfields++;
1099 }
1100 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1101 if (metric_only) {
1102 pm(&os, NULL, "", "", 0);
1103 return;
1104 }
1105 aggr_printout(counter, id, nr);
1106
1107 fprintf(stat_config.output, "%*s%s",
1108 csv_output ? 0 : 18,
1109 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1110 csv_sep);
1111
1112 fprintf(stat_config.output, "%-*s%s",
1113 csv_output ? 0 : unit_width,
1114 counter->unit, csv_sep);
1115
1116 fprintf(stat_config.output, "%*s",
1117 csv_output ? 0 : -25,
1118 perf_evsel__name(counter));
1119
1120 if (counter->cgrp)
1121 fprintf(stat_config.output, "%s%s",
1122 csv_sep, counter->cgrp->name);
1123
1124 if (!csv_output)
1125 pm(&os, NULL, NULL, "", 0);
1126 print_noise(counter, noise);
1127 print_running(run, ena);
1128 if (csv_output)
1129 pm(&os, NULL, NULL, "", 0);
1130 return;
1131 }
1132
1133 if (metric_only)
1134 /* nothing */;
1135 else if (nsec_counter(counter))
1136 nsec_printout(id, nr, counter, uval);
1137 else
1138 abs_printout(id, nr, counter, uval);
1139
1140 out.print_metric = pm;
1141 out.new_line = nl;
1142 out.ctx = &os;
1143
1144 if (csv_output && !metric_only) {
1145 print_noise(counter, noise);
1146 print_running(run, ena);
1147 }
1148
1149 perf_stat__print_shadow_stats(counter, uval,
1150 first_shadow_cpu(counter, id),
1151 &out);
1152 if (!csv_output && !metric_only) {
1153 print_noise(counter, noise);
1154 print_running(run, ena);
1155 }
1156}
1157
1158static void aggr_update_shadow(void)
1159{
1160 int cpu, s2, id, s;
1161 u64 val;
1162 struct perf_evsel *counter;
1163
1164 for (s = 0; s < aggr_map->nr; s++) {
1165 id = aggr_map->map[s];
1166 evlist__for_each_entry(evsel_list, counter) {
1167 val = 0;
1168 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1169 s2 = aggr_get_id(evsel_list->cpus, cpu);
1170 if (s2 != id)
1171 continue;
1172 val += perf_counts(counter->counts, cpu, 0)->val;
1173 }
1174 val = val * counter->scale;
1175 perf_stat__update_shadow_stats(counter, &val,
1176 first_shadow_cpu(counter, id));
1177 }
1178 }
1179}
1180
1181static void print_aggr(char *prefix)
1182{
1183 FILE *output = stat_config.output;
1184 struct perf_evsel *counter;
1185 int cpu, s, s2, id, nr;
1186 double uval;
1187 u64 ena, run, val;
1188 bool first;
1189
1190 if (!(aggr_map || aggr_get_id))
1191 return;
1192
1193 aggr_update_shadow();
1194
1195 /*
1196 * With metric_only everything is on a single line.
1197 * Without each counter has its own line.
1198 */
1199 for (s = 0; s < aggr_map->nr; s++) {
1200 if (prefix && metric_only)
1201 fprintf(output, "%s", prefix);
1202
1203 id = aggr_map->map[s];
1204 first = true;
1205 evlist__for_each_entry(evsel_list, counter) {
1206 val = ena = run = 0;
1207 nr = 0;
1208 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1209 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1210 if (s2 != id)
1211 continue;
1212 val += perf_counts(counter->counts, cpu, 0)->val;
1213 ena += perf_counts(counter->counts, cpu, 0)->ena;
1214 run += perf_counts(counter->counts, cpu, 0)->run;
1215 nr++;
1216 }
1217 if (first && metric_only) {
1218 first = false;
1219 aggr_printout(counter, id, nr);
1220 }
1221 if (prefix && !metric_only)
1222 fprintf(output, "%s", prefix);
1223
1224 uval = val * counter->scale;
1225 printout(id, nr, counter, uval, prefix, run, ena, 1.0);
1226 if (!metric_only)
1227 fputc('\n', output);
1228 }
1229 if (metric_only)
1230 fputc('\n', output);
1231 }
1232}
1233
1234static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1235{
1236 FILE *output = stat_config.output;
1237 int nthreads = thread_map__nr(counter->threads);
1238 int ncpus = cpu_map__nr(counter->cpus);
1239 int cpu, thread;
1240 double uval;
1241
1242 for (thread = 0; thread < nthreads; thread++) {
1243 u64 ena = 0, run = 0, val = 0;
1244
1245 for (cpu = 0; cpu < ncpus; cpu++) {
1246 val += perf_counts(counter->counts, cpu, thread)->val;
1247 ena += perf_counts(counter->counts, cpu, thread)->ena;
1248 run += perf_counts(counter->counts, cpu, thread)->run;
1249 }
1250
1251 if (prefix)
1252 fprintf(output, "%s", prefix);
1253
1254 uval = val * counter->scale;
1255 printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
1256 fputc('\n', output);
1257 }
1258}
1259
1260/*
1261 * Print out the results of a single counter:
1262 * aggregated counts in system-wide mode
1263 */
1264static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1265{
1266 FILE *output = stat_config.output;
1267 struct perf_stat_evsel *ps = counter->priv;
1268 double avg = avg_stats(&ps->res_stats[0]);
1269 double uval;
1270 double avg_enabled, avg_running;
1271
1272 avg_enabled = avg_stats(&ps->res_stats[1]);
1273 avg_running = avg_stats(&ps->res_stats[2]);
1274
1275 if (prefix && !metric_only)
1276 fprintf(output, "%s", prefix);
1277
1278 uval = avg * counter->scale;
1279 printout(-1, 0, counter, uval, prefix, avg_running, avg_enabled, avg);
1280 if (!metric_only)
1281 fprintf(output, "\n");
1282}
1283
1284/*
1285 * Print out the results of a single counter:
1286 * does not use aggregated count in system-wide
1287 */
1288static void print_counter(struct perf_evsel *counter, char *prefix)
1289{
1290 FILE *output = stat_config.output;
1291 u64 ena, run, val;
1292 double uval;
1293 int cpu;
1294
1295 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1296 val = perf_counts(counter->counts, cpu, 0)->val;
1297 ena = perf_counts(counter->counts, cpu, 0)->ena;
1298 run = perf_counts(counter->counts, cpu, 0)->run;
1299
1300 if (prefix)
1301 fprintf(output, "%s", prefix);
1302
1303 uval = val * counter->scale;
1304 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1305
1306 fputc('\n', output);
1307 }
1308}
1309
1310static void print_no_aggr_metric(char *prefix)
1311{
1312 int cpu;
1313 int nrcpus = 0;
1314 struct perf_evsel *counter;
1315 u64 ena, run, val;
1316 double uval;
1317
1318 nrcpus = evsel_list->cpus->nr;
1319 for (cpu = 0; cpu < nrcpus; cpu++) {
1320 bool first = true;
1321
1322 if (prefix)
1323 fputs(prefix, stat_config.output);
1324 evlist__for_each_entry(evsel_list, counter) {
1325 if (first) {
1326 aggr_printout(counter, cpu, 0);
1327 first = false;
1328 }
1329 val = perf_counts(counter->counts, cpu, 0)->val;
1330 ena = perf_counts(counter->counts, cpu, 0)->ena;
1331 run = perf_counts(counter->counts, cpu, 0)->run;
1332
1333 uval = val * counter->scale;
1334 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
1335 }
1336 fputc('\n', stat_config.output);
1337 }
1338}
1339
1340static int aggr_header_lens[] = {
1341 [AGGR_CORE] = 18,
1342 [AGGR_SOCKET] = 12,
1343 [AGGR_NONE] = 6,
1344 [AGGR_THREAD] = 24,
1345 [AGGR_GLOBAL] = 0,
1346};
1347
1348static const char *aggr_header_csv[] = {
1349 [AGGR_CORE] = "core,cpus,",
1350 [AGGR_SOCKET] = "socket,cpus",
1351 [AGGR_NONE] = "cpu,",
1352 [AGGR_THREAD] = "comm-pid,",
1353 [AGGR_GLOBAL] = ""
1354};
1355
1356static void print_metric_headers(const char *prefix, bool no_indent)
1357{
1358 struct perf_stat_output_ctx out;
1359 struct perf_evsel *counter;
1360 struct outstate os = {
1361 .fh = stat_config.output
1362 };
1363
1364 if (prefix)
1365 fprintf(stat_config.output, "%s", prefix);
1366
1367 if (!csv_output && !no_indent)
1368 fprintf(stat_config.output, "%*s",
1369 aggr_header_lens[stat_config.aggr_mode], "");
1370 if (csv_output) {
1371 if (stat_config.interval)
1372 fputs("time,", stat_config.output);
1373 fputs(aggr_header_csv[stat_config.aggr_mode],
1374 stat_config.output);
1375 }
1376
1377 /* Print metrics headers only */
1378 evlist__for_each_entry(evsel_list, counter) {
1379 os.evsel = counter;
1380 out.ctx = &os;
1381 out.print_metric = print_metric_header;
1382 out.new_line = new_line_metric;
1383 os.evsel = counter;
1384 perf_stat__print_shadow_stats(counter, 0,
1385 0,
1386 &out);
1387 }
1388 fputc('\n', stat_config.output);
1389}
1390
1391static void print_interval(char *prefix, struct timespec *ts)
1392{
1393 FILE *output = stat_config.output;
1394 static int num_print_interval;
1395
1396 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1397
1398 if (num_print_interval == 0 && !csv_output) {
1399 switch (stat_config.aggr_mode) {
1400 case AGGR_SOCKET:
1401 fprintf(output, "# time socket cpus");
1402 if (!metric_only)
1403 fprintf(output, " counts %*s events\n", unit_width, "unit");
1404 break;
1405 case AGGR_CORE:
1406 fprintf(output, "# time core cpus");
1407 if (!metric_only)
1408 fprintf(output, " counts %*s events\n", unit_width, "unit");
1409 break;
1410 case AGGR_NONE:
1411 fprintf(output, "# time CPU");
1412 if (!metric_only)
1413 fprintf(output, " counts %*s events\n", unit_width, "unit");
1414 break;
1415 case AGGR_THREAD:
1416 fprintf(output, "# time comm-pid");
1417 if (!metric_only)
1418 fprintf(output, " counts %*s events\n", unit_width, "unit");
1419 break;
1420 case AGGR_GLOBAL:
1421 default:
1422 fprintf(output, "# time");
1423 if (!metric_only)
1424 fprintf(output, " counts %*s events\n", unit_width, "unit");
1425 case AGGR_UNSET:
1426 break;
1427 }
1428 }
1429
1430 if (num_print_interval == 0 && metric_only)
1431 print_metric_headers(" ", true);
1432 if (++num_print_interval == 25)
1433 num_print_interval = 0;
1434}
1435
1436static void print_header(int argc, const char **argv)
1437{
1438 FILE *output = stat_config.output;
1439 int i;
1440
1441 fflush(stdout);
1442
1443 if (!csv_output) {
1444 fprintf(output, "\n");
1445 fprintf(output, " Performance counter stats for ");
1446 if (target.system_wide)
1447 fprintf(output, "\'system wide");
1448 else if (target.cpu_list)
1449 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1450 else if (!target__has_task(&target)) {
1451 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1452 for (i = 1; argv && (i < argc); i++)
1453 fprintf(output, " %s", argv[i]);
1454 } else if (target.pid)
1455 fprintf(output, "process id \'%s", target.pid);
1456 else
1457 fprintf(output, "thread id \'%s", target.tid);
1458
1459 fprintf(output, "\'");
1460 if (run_count > 1)
1461 fprintf(output, " (%d runs)", run_count);
1462 fprintf(output, ":\n\n");
1463 }
1464}
1465
1466static void print_footer(void)
1467{
1468 FILE *output = stat_config.output;
1469
1470 if (!null_run)
1471 fprintf(output, "\n");
1472 fprintf(output, " %17.9f seconds time elapsed",
1473 avg_stats(&walltime_nsecs_stats) / NSEC_PER_SEC);
1474 if (run_count > 1) {
1475 fprintf(output, " ");
1476 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1477 avg_stats(&walltime_nsecs_stats));
1478 }
1479 fprintf(output, "\n\n");
1480}
1481
1482static void print_counters(struct timespec *ts, int argc, const char **argv)
1483{
1484 int interval = stat_config.interval;
1485 struct perf_evsel *counter;
1486 char buf[64], *prefix = NULL;
1487
1488 /* Do not print anything if we record to the pipe. */
1489 if (STAT_RECORD && perf_stat.file.is_pipe)
1490 return;
1491
1492 if (interval)
1493 print_interval(prefix = buf, ts);
1494 else
1495 print_header(argc, argv);
1496
1497 if (metric_only) {
1498 static int num_print_iv;
1499
1500 if (num_print_iv == 0 && !interval)
1501 print_metric_headers(prefix, false);
1502 if (num_print_iv++ == 25)
1503 num_print_iv = 0;
1504 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1505 fprintf(stat_config.output, "%s", prefix);
1506 }
1507
1508 switch (stat_config.aggr_mode) {
1509 case AGGR_CORE:
1510 case AGGR_SOCKET:
1511 print_aggr(prefix);
1512 break;
1513 case AGGR_THREAD:
1514 evlist__for_each_entry(evsel_list, counter)
1515 print_aggr_thread(counter, prefix);
1516 break;
1517 case AGGR_GLOBAL:
1518 evlist__for_each_entry(evsel_list, counter)
1519 print_counter_aggr(counter, prefix);
1520 if (metric_only)
1521 fputc('\n', stat_config.output);
1522 break;
1523 case AGGR_NONE:
1524 if (metric_only)
1525 print_no_aggr_metric(prefix);
1526 else {
1527 evlist__for_each_entry(evsel_list, counter)
1528 print_counter(counter, prefix);
1529 }
1530 break;
1531 case AGGR_UNSET:
1532 default:
1533 break;
1534 }
1535
1536 if (!interval && !csv_output)
1537 print_footer();
1538
1539 fflush(stat_config.output);
1540}
1541
1542static volatile int signr = -1;
1543
1544static void skip_signal(int signo)
1545{
1546 if ((child_pid == -1) || stat_config.interval)
1547 done = 1;
1548
1549 signr = signo;
1550 /*
1551 * render child_pid harmless
1552 * won't send SIGTERM to a random
1553 * process in case of race condition
1554 * and fast PID recycling
1555 */
1556 child_pid = -1;
1557}
1558
1559static void sig_atexit(void)
1560{
1561 sigset_t set, oset;
1562
1563 /*
1564 * avoid race condition with SIGCHLD handler
1565 * in skip_signal() which is modifying child_pid
1566 * goal is to avoid send SIGTERM to a random
1567 * process
1568 */
1569 sigemptyset(&set);
1570 sigaddset(&set, SIGCHLD);
1571 sigprocmask(SIG_BLOCK, &set, &oset);
1572
1573 if (child_pid != -1)
1574 kill(child_pid, SIGTERM);
1575
1576 sigprocmask(SIG_SETMASK, &oset, NULL);
1577
1578 if (signr == -1)
1579 return;
1580
1581 signal(signr, SIG_DFL);
1582 kill(getpid(), signr);
1583}
1584
1585static int stat__set_big_num(const struct option *opt __maybe_unused,
1586 const char *s __maybe_unused, int unset)
1587{
1588 big_num_opt = unset ? 0 : 1;
1589 return 0;
1590}
1591
1592static int enable_metric_only(const struct option *opt __maybe_unused,
1593 const char *s __maybe_unused, int unset)
1594{
1595 force_metric_only = true;
1596 metric_only = !unset;
1597 return 0;
1598}
1599
1600static const struct option stat_options[] = {
1601 OPT_BOOLEAN('T', "transaction", &transaction_run,
1602 "hardware transaction statistics"),
1603 OPT_CALLBACK('e', "event", &evsel_list, "event",
1604 "event selector. use 'perf list' to list available events",
1605 parse_events_option),
1606 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1607 "event filter", parse_filter),
1608 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1609 "child tasks do not inherit counters"),
1610 OPT_STRING('p', "pid", &target.pid, "pid",
1611 "stat events on existing process id"),
1612 OPT_STRING('t', "tid", &target.tid, "tid",
1613 "stat events on existing thread id"),
1614 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1615 "system-wide collection from all CPUs"),
1616 OPT_BOOLEAN('g', "group", &group,
1617 "put the counters into a counter group"),
1618 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1619 OPT_INCR('v', "verbose", &verbose,
1620 "be more verbose (show counter open errors, etc)"),
1621 OPT_INTEGER('r', "repeat", &run_count,
1622 "repeat command and print average + stddev (max: 100, forever: 0)"),
1623 OPT_BOOLEAN('n', "null", &null_run,
1624 "null run - dont start any counters"),
1625 OPT_INCR('d', "detailed", &detailed_run,
1626 "detailed run - start a lot of events"),
1627 OPT_BOOLEAN('S', "sync", &sync_run,
1628 "call sync() before starting a run"),
1629 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1630 "print large numbers with thousands\' separators",
1631 stat__set_big_num),
1632 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1633 "list of cpus to monitor in system-wide"),
1634 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1635 "disable CPU count aggregation", AGGR_NONE),
1636 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1637 "print counts with custom separator"),
1638 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1639 "monitor event in cgroup name only", parse_cgroups),
1640 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1641 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1642 OPT_INTEGER(0, "log-fd", &output_fd,
1643 "log output to fd, instead of stderr"),
1644 OPT_STRING(0, "pre", &pre_cmd, "command",
1645 "command to run prior to the measured command"),
1646 OPT_STRING(0, "post", &post_cmd, "command",
1647 "command to run after to the measured command"),
1648 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1649 "print counts at regular interval in ms (>= 10)"),
1650 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1651 "aggregate counts per processor socket", AGGR_SOCKET),
1652 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1653 "aggregate counts per physical processor core", AGGR_CORE),
1654 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1655 "aggregate counts per thread", AGGR_THREAD),
1656 OPT_UINTEGER('D', "delay", &initial_delay,
1657 "ms to wait before starting measurement after program start"),
1658 OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
1659 "Only print computed metrics. No raw values", enable_metric_only),
1660 OPT_BOOLEAN(0, "topdown", &topdown_run,
1661 "measure topdown level 1 statistics"),
1662 OPT_END()
1663};
1664
1665static int perf_stat__get_socket(struct cpu_map *map, int cpu)
1666{
1667 return cpu_map__get_socket(map, cpu, NULL);
1668}
1669
1670static int perf_stat__get_core(struct cpu_map *map, int cpu)
1671{
1672 return cpu_map__get_core(map, cpu, NULL);
1673}
1674
1675static int cpu_map__get_max(struct cpu_map *map)
1676{
1677 int i, max = -1;
1678
1679 for (i = 0; i < map->nr; i++) {
1680 if (map->map[i] > max)
1681 max = map->map[i];
1682 }
1683
1684 return max;
1685}
1686
1687static struct cpu_map *cpus_aggr_map;
1688
1689static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
1690{
1691 int cpu;
1692
1693 if (idx >= map->nr)
1694 return -1;
1695
1696 cpu = map->map[idx];
1697
1698 if (cpus_aggr_map->map[cpu] == -1)
1699 cpus_aggr_map->map[cpu] = get_id(map, idx);
1700
1701 return cpus_aggr_map->map[cpu];
1702}
1703
1704static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
1705{
1706 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
1707}
1708
1709static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
1710{
1711 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
1712}
1713
1714static int perf_stat_init_aggr_mode(void)
1715{
1716 int nr;
1717
1718 switch (stat_config.aggr_mode) {
1719 case AGGR_SOCKET:
1720 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1721 perror("cannot build socket map");
1722 return -1;
1723 }
1724 aggr_get_id = perf_stat__get_socket_cached;
1725 break;
1726 case AGGR_CORE:
1727 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1728 perror("cannot build core map");
1729 return -1;
1730 }
1731 aggr_get_id = perf_stat__get_core_cached;
1732 break;
1733 case AGGR_NONE:
1734 case AGGR_GLOBAL:
1735 case AGGR_THREAD:
1736 case AGGR_UNSET:
1737 default:
1738 break;
1739 }
1740
1741 /*
1742 * The evsel_list->cpus is the base we operate on,
1743 * taking the highest cpu number to be the size of
1744 * the aggregation translate cpumap.
1745 */
1746 nr = cpu_map__get_max(evsel_list->cpus);
1747 cpus_aggr_map = cpu_map__empty_new(nr + 1);
1748 return cpus_aggr_map ? 0 : -ENOMEM;
1749}
1750
1751static void perf_stat__exit_aggr_mode(void)
1752{
1753 cpu_map__put(aggr_map);
1754 cpu_map__put(cpus_aggr_map);
1755 aggr_map = NULL;
1756 cpus_aggr_map = NULL;
1757}
1758
1759static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
1760{
1761 int cpu;
1762
1763 if (idx > map->nr)
1764 return -1;
1765
1766 cpu = map->map[idx];
1767
1768 if (cpu >= env->nr_cpus_online)
1769 return -1;
1770
1771 return cpu;
1772}
1773
1774static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
1775{
1776 struct perf_env *env = data;
1777 int cpu = perf_env__get_cpu(env, map, idx);
1778
1779 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
1780}
1781
1782static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
1783{
1784 struct perf_env *env = data;
1785 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
1786
1787 if (cpu != -1) {
1788 int socket_id = env->cpu[cpu].socket_id;
1789
1790 /*
1791 * Encode socket in upper 16 bits
1792 * core_id is relative to socket, and
1793 * we need a global id. So we combine
1794 * socket + core id.
1795 */
1796 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
1797 }
1798
1799 return core;
1800}
1801
1802static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
1803 struct cpu_map **sockp)
1804{
1805 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1806}
1807
1808static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
1809 struct cpu_map **corep)
1810{
1811 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1812}
1813
1814static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
1815{
1816 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1817}
1818
1819static int perf_stat__get_core_file(struct cpu_map *map, int idx)
1820{
1821 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1822}
1823
1824static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1825{
1826 struct perf_env *env = &st->session->header.env;
1827
1828 switch (stat_config.aggr_mode) {
1829 case AGGR_SOCKET:
1830 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
1831 perror("cannot build socket map");
1832 return -1;
1833 }
1834 aggr_get_id = perf_stat__get_socket_file;
1835 break;
1836 case AGGR_CORE:
1837 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
1838 perror("cannot build core map");
1839 return -1;
1840 }
1841 aggr_get_id = perf_stat__get_core_file;
1842 break;
1843 case AGGR_NONE:
1844 case AGGR_GLOBAL:
1845 case AGGR_THREAD:
1846 case AGGR_UNSET:
1847 default:
1848 break;
1849 }
1850
1851 return 0;
1852}
1853
1854static int topdown_filter_events(const char **attr, char **str, bool use_group)
1855{
1856 int off = 0;
1857 int i;
1858 int len = 0;
1859 char *s;
1860
1861 for (i = 0; attr[i]; i++) {
1862 if (pmu_have_event("cpu", attr[i])) {
1863 len += strlen(attr[i]) + 1;
1864 attr[i - off] = attr[i];
1865 } else
1866 off++;
1867 }
1868 attr[i - off] = NULL;
1869
1870 *str = malloc(len + 1 + 2);
1871 if (!*str)
1872 return -1;
1873 s = *str;
1874 if (i - off == 0) {
1875 *s = 0;
1876 return 0;
1877 }
1878 if (use_group)
1879 *s++ = '{';
1880 for (i = 0; attr[i]; i++) {
1881 strcpy(s, attr[i]);
1882 s += strlen(s);
1883 *s++ = ',';
1884 }
1885 if (use_group) {
1886 s[-1] = '}';
1887 *s = 0;
1888 } else
1889 s[-1] = 0;
1890 return 0;
1891}
1892
1893__weak bool arch_topdown_check_group(bool *warn)
1894{
1895 *warn = false;
1896 return false;
1897}
1898
1899__weak void arch_topdown_group_warn(void)
1900{
1901}
1902
1903/*
1904 * Add default attributes, if there were no attributes specified or
1905 * if -d/--detailed, -d -d or -d -d -d is used:
1906 */
1907static int add_default_attributes(void)
1908{
1909 int err;
1910 struct perf_event_attr default_attrs0[] = {
1911
1912 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1913 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1914 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1915 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1916
1917 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1918};
1919 struct perf_event_attr frontend_attrs[] = {
1920 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1921};
1922 struct perf_event_attr backend_attrs[] = {
1923 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1924};
1925 struct perf_event_attr default_attrs1[] = {
1926 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1927 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1928 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1929
1930};
1931
1932/*
1933 * Detailed stats (-d), covering the L1 and last level data caches:
1934 */
1935 struct perf_event_attr detailed_attrs[] = {
1936
1937 { .type = PERF_TYPE_HW_CACHE,
1938 .config =
1939 PERF_COUNT_HW_CACHE_L1D << 0 |
1940 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1941 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1942
1943 { .type = PERF_TYPE_HW_CACHE,
1944 .config =
1945 PERF_COUNT_HW_CACHE_L1D << 0 |
1946 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1947 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1948
1949 { .type = PERF_TYPE_HW_CACHE,
1950 .config =
1951 PERF_COUNT_HW_CACHE_LL << 0 |
1952 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1953 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1954
1955 { .type = PERF_TYPE_HW_CACHE,
1956 .config =
1957 PERF_COUNT_HW_CACHE_LL << 0 |
1958 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1959 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1960};
1961
1962/*
1963 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1964 */
1965 struct perf_event_attr very_detailed_attrs[] = {
1966
1967 { .type = PERF_TYPE_HW_CACHE,
1968 .config =
1969 PERF_COUNT_HW_CACHE_L1I << 0 |
1970 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1971 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1972
1973 { .type = PERF_TYPE_HW_CACHE,
1974 .config =
1975 PERF_COUNT_HW_CACHE_L1I << 0 |
1976 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1977 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1978
1979 { .type = PERF_TYPE_HW_CACHE,
1980 .config =
1981 PERF_COUNT_HW_CACHE_DTLB << 0 |
1982 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1983 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1984
1985 { .type = PERF_TYPE_HW_CACHE,
1986 .config =
1987 PERF_COUNT_HW_CACHE_DTLB << 0 |
1988 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1989 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1990
1991 { .type = PERF_TYPE_HW_CACHE,
1992 .config =
1993 PERF_COUNT_HW_CACHE_ITLB << 0 |
1994 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1995 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1996
1997 { .type = PERF_TYPE_HW_CACHE,
1998 .config =
1999 PERF_COUNT_HW_CACHE_ITLB << 0 |
2000 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2001 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2002
2003};
2004
2005/*
2006 * Very, very detailed stats (-d -d -d), adding prefetch events:
2007 */
2008 struct perf_event_attr very_very_detailed_attrs[] = {
2009
2010 { .type = PERF_TYPE_HW_CACHE,
2011 .config =
2012 PERF_COUNT_HW_CACHE_L1D << 0 |
2013 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2014 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2015
2016 { .type = PERF_TYPE_HW_CACHE,
2017 .config =
2018 PERF_COUNT_HW_CACHE_L1D << 0 |
2019 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2020 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2021};
2022
2023 /* Set attrs if no event is selected and !null_run: */
2024 if (null_run)
2025 return 0;
2026
2027 if (transaction_run) {
2028 if (pmu_have_event("cpu", "cycles-ct") &&
2029 pmu_have_event("cpu", "el-start"))
2030 err = parse_events(evsel_list, transaction_attrs, NULL);
2031 else
2032 err = parse_events(evsel_list, transaction_limited_attrs, NULL);
2033 if (err) {
2034 fprintf(stderr, "Cannot set up transaction events\n");
2035 return -1;
2036 }
2037 return 0;
2038 }
2039
2040 if (topdown_run) {
2041 char *str = NULL;
2042 bool warn = false;
2043
2044 if (stat_config.aggr_mode != AGGR_GLOBAL &&
2045 stat_config.aggr_mode != AGGR_CORE) {
2046 pr_err("top down event configuration requires --per-core mode\n");
2047 return -1;
2048 }
2049 stat_config.aggr_mode = AGGR_CORE;
2050 if (nr_cgroups || !target__has_cpu(&target)) {
2051 pr_err("top down event configuration requires system-wide mode (-a)\n");
2052 return -1;
2053 }
2054
2055 if (!force_metric_only)
2056 metric_only = true;
2057 if (topdown_filter_events(topdown_attrs, &str,
2058 arch_topdown_check_group(&warn)) < 0) {
2059 pr_err("Out of memory\n");
2060 return -1;
2061 }
2062 if (topdown_attrs[0] && str) {
2063 if (warn)
2064 arch_topdown_group_warn();
2065 err = parse_events(evsel_list, str, NULL);
2066 if (err) {
2067 fprintf(stderr,
2068 "Cannot set up top down events %s: %d\n",
2069 str, err);
2070 free(str);
2071 return -1;
2072 }
2073 } else {
2074 fprintf(stderr, "System does not support topdown\n");
2075 return -1;
2076 }
2077 free(str);
2078 }
2079
2080 if (!evsel_list->nr_entries) {
2081 if (target__has_cpu(&target))
2082 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
2083
2084 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2085 return -1;
2086 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
2087 if (perf_evlist__add_default_attrs(evsel_list,
2088 frontend_attrs) < 0)
2089 return -1;
2090 }
2091 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
2092 if (perf_evlist__add_default_attrs(evsel_list,
2093 backend_attrs) < 0)
2094 return -1;
2095 }
2096 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2097 return -1;
2098 }
2099
2100 /* Detailed events get appended to the event list: */
2101
2102 if (detailed_run < 1)
2103 return 0;
2104
2105 /* Append detailed run extra attributes: */
2106 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2107 return -1;
2108
2109 if (detailed_run < 2)
2110 return 0;
2111
2112 /* Append very detailed run extra attributes: */
2113 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2114 return -1;
2115
2116 if (detailed_run < 3)
2117 return 0;
2118
2119 /* Append very, very detailed run extra attributes: */
2120 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2121}
2122
2123static const char * const stat_record_usage[] = {
2124 "perf stat record [<options>]",
2125 NULL,
2126};
2127
2128static void init_features(struct perf_session *session)
2129{
2130 int feat;
2131
2132 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2133 perf_header__set_feat(&session->header, feat);
2134
2135 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2136 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2137 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2138 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2139}
2140
2141static int __cmd_record(int argc, const char **argv)
2142{
2143 struct perf_session *session;
2144 struct perf_data_file *file = &perf_stat.file;
2145
2146 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2147 PARSE_OPT_STOP_AT_NON_OPTION);
2148
2149 if (output_name)
2150 file->path = output_name;
2151
2152 if (run_count != 1 || forever) {
2153 pr_err("Cannot use -r option with perf stat record.\n");
2154 return -1;
2155 }
2156
2157 session = perf_session__new(file, false, NULL);
2158 if (session == NULL) {
2159 pr_err("Perf session creation failed.\n");
2160 return -1;
2161 }
2162
2163 init_features(session);
2164
2165 session->evlist = evsel_list;
2166 perf_stat.session = session;
2167 perf_stat.record = true;
2168 return argc;
2169}
2170
2171static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
2172 union perf_event *event,
2173 struct perf_session *session)
2174{
2175 struct stat_round_event *stat_round = &event->stat_round;
2176 struct perf_evsel *counter;
2177 struct timespec tsh, *ts = NULL;
2178 const char **argv = session->header.env.cmdline_argv;
2179 int argc = session->header.env.nr_cmdline;
2180
2181 evlist__for_each_entry(evsel_list, counter)
2182 perf_stat_process_counter(&stat_config, counter);
2183
2184 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2185 update_stats(&walltime_nsecs_stats, stat_round->time);
2186
2187 if (stat_config.interval && stat_round->time) {
2188 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2189 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2190 ts = &tsh;
2191 }
2192
2193 print_counters(ts, argc, argv);
2194 return 0;
2195}
2196
2197static
2198int process_stat_config_event(struct perf_tool *tool,
2199 union perf_event *event,
2200 struct perf_session *session __maybe_unused)
2201{
2202 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2203
2204 perf_event__read_stat_config(&stat_config, &event->stat_config);
2205
2206 if (cpu_map__empty(st->cpus)) {
2207 if (st->aggr_mode != AGGR_UNSET)
2208 pr_warning("warning: processing task data, aggregation mode not set\n");
2209 return 0;
2210 }
2211
2212 if (st->aggr_mode != AGGR_UNSET)
2213 stat_config.aggr_mode = st->aggr_mode;
2214
2215 if (perf_stat.file.is_pipe)
2216 perf_stat_init_aggr_mode();
2217 else
2218 perf_stat_init_aggr_mode_file(st);
2219
2220 return 0;
2221}
2222
2223static int set_maps(struct perf_stat *st)
2224{
2225 if (!st->cpus || !st->threads)
2226 return 0;
2227
2228 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2229 return -EINVAL;
2230
2231 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2232
2233 if (perf_evlist__alloc_stats(evsel_list, true))
2234 return -ENOMEM;
2235
2236 st->maps_allocated = true;
2237 return 0;
2238}
2239
2240static
2241int process_thread_map_event(struct perf_tool *tool,
2242 union perf_event *event,
2243 struct perf_session *session __maybe_unused)
2244{
2245 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2246
2247 if (st->threads) {
2248 pr_warning("Extra thread map event, ignoring.\n");
2249 return 0;
2250 }
2251
2252 st->threads = thread_map__new_event(&event->thread_map);
2253 if (!st->threads)
2254 return -ENOMEM;
2255
2256 return set_maps(st);
2257}
2258
2259static
2260int process_cpu_map_event(struct perf_tool *tool,
2261 union perf_event *event,
2262 struct perf_session *session __maybe_unused)
2263{
2264 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2265 struct cpu_map *cpus;
2266
2267 if (st->cpus) {
2268 pr_warning("Extra cpu map event, ignoring.\n");
2269 return 0;
2270 }
2271
2272 cpus = cpu_map__new_data(&event->cpu_map.data);
2273 if (!cpus)
2274 return -ENOMEM;
2275
2276 st->cpus = cpus;
2277 return set_maps(st);
2278}
2279
2280static const char * const stat_report_usage[] = {
2281 "perf stat report [<options>]",
2282 NULL,
2283};
2284
2285static struct perf_stat perf_stat = {
2286 .tool = {
2287 .attr = perf_event__process_attr,
2288 .event_update = perf_event__process_event_update,
2289 .thread_map = process_thread_map_event,
2290 .cpu_map = process_cpu_map_event,
2291 .stat_config = process_stat_config_event,
2292 .stat = perf_event__process_stat_event,
2293 .stat_round = process_stat_round_event,
2294 },
2295 .aggr_mode = AGGR_UNSET,
2296};
2297
2298static int __cmd_report(int argc, const char **argv)
2299{
2300 struct perf_session *session;
2301 const struct option options[] = {
2302 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2303 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2304 "aggregate counts per processor socket", AGGR_SOCKET),
2305 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2306 "aggregate counts per physical processor core", AGGR_CORE),
2307 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2308 "disable CPU count aggregation", AGGR_NONE),
2309 OPT_END()
2310 };
2311 struct stat st;
2312 int ret;
2313
2314 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2315
2316 if (!input_name || !strlen(input_name)) {
2317 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2318 input_name = "-";
2319 else
2320 input_name = "perf.data";
2321 }
2322
2323 perf_stat.file.path = input_name;
2324 perf_stat.file.mode = PERF_DATA_MODE_READ;
2325
2326 session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);
2327 if (session == NULL)
2328 return -1;
2329
2330 perf_stat.session = session;
2331 stat_config.output = stderr;
2332 evsel_list = session->evlist;
2333
2334 ret = perf_session__process_events(session);
2335 if (ret)
2336 return ret;
2337
2338 perf_session__delete(session);
2339 return 0;
2340}
2341
2342int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
2343{
2344 const char * const stat_usage[] = {
2345 "perf stat [<options>] [<command>]",
2346 NULL
2347 };
2348 int status = -EINVAL, run_idx;
2349 const char *mode;
2350 FILE *output = stderr;
2351 unsigned int interval;
2352 const char * const stat_subcommands[] = { "record", "report" };
2353
2354 setlocale(LC_ALL, "");
2355
2356 evsel_list = perf_evlist__new();
2357 if (evsel_list == NULL)
2358 return -ENOMEM;
2359
2360 parse_events__shrink_config_terms();
2361 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2362 (const char **) stat_usage,
2363 PARSE_OPT_STOP_AT_NON_OPTION);
2364 perf_stat__init_shadow_stats();
2365
2366 if (csv_sep) {
2367 csv_output = true;
2368 if (!strcmp(csv_sep, "\\t"))
2369 csv_sep = "\t";
2370 } else
2371 csv_sep = DEFAULT_SEPARATOR;
2372
2373 if (argc && !strncmp(argv[0], "rec", 3)) {
2374 argc = __cmd_record(argc, argv);
2375 if (argc < 0)
2376 return -1;
2377 } else if (argc && !strncmp(argv[0], "rep", 3))
2378 return __cmd_report(argc, argv);
2379
2380 interval = stat_config.interval;
2381
2382 /*
2383 * For record command the -o is already taken care of.
2384 */
2385 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2386 output = NULL;
2387
2388 if (output_name && output_fd) {
2389 fprintf(stderr, "cannot use both --output and --log-fd\n");
2390 parse_options_usage(stat_usage, stat_options, "o", 1);
2391 parse_options_usage(NULL, stat_options, "log-fd", 0);
2392 goto out;
2393 }
2394
2395 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2396 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2397 goto out;
2398 }
2399
2400 if (metric_only && run_count > 1) {
2401 fprintf(stderr, "--metric-only is not supported with -r\n");
2402 goto out;
2403 }
2404
2405 if (output_fd < 0) {
2406 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2407 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2408 goto out;
2409 }
2410
2411 if (!output) {
2412 struct timespec tm;
2413 mode = append_file ? "a" : "w";
2414
2415 output = fopen(output_name, mode);
2416 if (!output) {
2417 perror("failed to create output file");
2418 return -1;
2419 }
2420 clock_gettime(CLOCK_REALTIME, &tm);
2421 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2422 } else if (output_fd > 0) {
2423 mode = append_file ? "a" : "w";
2424 output = fdopen(output_fd, mode);
2425 if (!output) {
2426 perror("Failed opening logfd");
2427 return -errno;
2428 }
2429 }
2430
2431 stat_config.output = output;
2432
2433 /*
2434 * let the spreadsheet do the pretty-printing
2435 */
2436 if (csv_output) {
2437 /* User explicitly passed -B? */
2438 if (big_num_opt == 1) {
2439 fprintf(stderr, "-B option not supported with -x\n");
2440 parse_options_usage(stat_usage, stat_options, "B", 1);
2441 parse_options_usage(NULL, stat_options, "x", 1);
2442 goto out;
2443 } else /* Nope, so disable big number formatting */
2444 big_num = false;
2445 } else if (big_num_opt == 0) /* User passed --no-big-num */
2446 big_num = false;
2447
2448 if (!argc && target__none(&target))
2449 usage_with_options(stat_usage, stat_options);
2450
2451 if (run_count < 0) {
2452 pr_err("Run count must be a positive number\n");
2453 parse_options_usage(stat_usage, stat_options, "r", 1);
2454 goto out;
2455 } else if (run_count == 0) {
2456 forever = true;
2457 run_count = 1;
2458 }
2459
2460 if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) {
2461 fprintf(stderr, "The --per-thread option is only available "
2462 "when monitoring via -p -t options.\n");
2463 parse_options_usage(NULL, stat_options, "p", 1);
2464 parse_options_usage(NULL, stat_options, "t", 1);
2465 goto out;
2466 }
2467
2468 /*
2469 * no_aggr, cgroup are for system-wide only
2470 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2471 */
2472 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2473 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2474 !target__has_cpu(&target)) {
2475 fprintf(stderr, "both cgroup and no-aggregation "
2476 "modes only available in system-wide mode\n");
2477
2478 parse_options_usage(stat_usage, stat_options, "G", 1);
2479 parse_options_usage(NULL, stat_options, "A", 1);
2480 parse_options_usage(NULL, stat_options, "a", 1);
2481 goto out;
2482 }
2483
2484 if (add_default_attributes())
2485 goto out;
2486
2487 target__validate(&target);
2488
2489 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2490 if (target__has_task(&target)) {
2491 pr_err("Problems finding threads of monitor\n");
2492 parse_options_usage(stat_usage, stat_options, "p", 1);
2493 parse_options_usage(NULL, stat_options, "t", 1);
2494 } else if (target__has_cpu(&target)) {
2495 perror("failed to parse CPUs map");
2496 parse_options_usage(stat_usage, stat_options, "C", 1);
2497 parse_options_usage(NULL, stat_options, "a", 1);
2498 }
2499 goto out;
2500 }
2501
2502 /*
2503 * Initialize thread_map with comm names,
2504 * so we could print it out on output.
2505 */
2506 if (stat_config.aggr_mode == AGGR_THREAD)
2507 thread_map__read_comms(evsel_list->threads);
2508
2509 if (interval && interval < 100) {
2510 if (interval < 10) {
2511 pr_err("print interval must be >= 10ms\n");
2512 parse_options_usage(stat_usage, stat_options, "I", 1);
2513 goto out;
2514 } else
2515 pr_warning("print interval < 100ms. "
2516 "The overhead percentage could be high in some cases. "
2517 "Please proceed with caution.\n");
2518 }
2519
2520 if (perf_evlist__alloc_stats(evsel_list, interval))
2521 goto out;
2522
2523 if (perf_stat_init_aggr_mode())
2524 goto out;
2525
2526 /*
2527 * We dont want to block the signals - that would cause
2528 * child tasks to inherit that and Ctrl-C would not work.
2529 * What we want is for Ctrl-C to work in the exec()-ed
2530 * task, but being ignored by perf stat itself:
2531 */
2532 atexit(sig_atexit);
2533 if (!forever)
2534 signal(SIGINT, skip_signal);
2535 signal(SIGCHLD, skip_signal);
2536 signal(SIGALRM, skip_signal);
2537 signal(SIGABRT, skip_signal);
2538
2539 status = 0;
2540 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
2541 if (run_count != 1 && verbose)
2542 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2543 run_idx + 1);
2544
2545 status = run_perf_stat(argc, argv);
2546 if (forever && status != -1) {
2547 print_counters(NULL, argc, argv);
2548 perf_stat__reset_stats();
2549 }
2550 }
2551
2552 if (!forever && status != -1 && !interval)
2553 print_counters(NULL, argc, argv);
2554
2555 if (STAT_RECORD) {
2556 /*
2557 * We synthesize the kernel mmap record just so that older tools
2558 * don't emit warnings about not being able to resolve symbols
2559 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
2560 * a saner message about no samples being in the perf.data file.
2561 *
2562 * This also serves to suppress a warning about f_header.data.size == 0
2563 * in header.c at the moment 'perf stat record' gets introduced, which
2564 * is not really needed once we start adding the stat specific PERF_RECORD_
2565 * records, but the need to suppress the kptr_restrict messages in older
2566 * tools remain -acme
2567 */
2568 int fd = perf_data_file__fd(&perf_stat.file);
2569 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2570 process_synthesized_event,
2571 &perf_stat.session->machines.host);
2572 if (err) {
2573 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2574 "older tools may produce warnings about this file\n.");
2575 }
2576
2577 if (!interval) {
2578 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2579 pr_err("failed to write stat round event\n");
2580 }
2581
2582 if (!perf_stat.file.is_pipe) {
2583 perf_stat.session->header.data_size += perf_stat.bytes_written;
2584 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2585 }
2586
2587 perf_session__delete(perf_stat.session);
2588 }
2589
2590 perf_stat__exit_aggr_mode();
2591 perf_evlist__free_stats(evsel_list);
2592out:
2593 perf_evlist__delete(evsel_list);
2594 return status;
2595}