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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 "util/cgroup.h"
45#include <subcmd/parse-options.h>
46#include "util/parse-events.h"
47#include "util/pmus.h"
48#include "util/pmu.h"
49#include "util/event.h"
50#include "util/evlist.h"
51#include "util/evsel.h"
52#include "util/debug.h"
53#include "util/color.h"
54#include "util/stat.h"
55#include "util/header.h"
56#include "util/cpumap.h"
57#include "util/thread_map.h"
58#include "util/counts.h"
59#include "util/topdown.h"
60#include "util/session.h"
61#include "util/tool.h"
62#include "util/string2.h"
63#include "util/metricgroup.h"
64#include "util/synthetic-events.h"
65#include "util/target.h"
66#include "util/time-utils.h"
67#include "util/top.h"
68#include "util/affinity.h"
69#include "util/pfm.h"
70#include "util/bpf_counter.h"
71#include "util/iostat.h"
72#include "util/util.h"
73#include "asm/bug.h"
74
75#include <linux/time64.h>
76#include <linux/zalloc.h>
77#include <api/fs/fs.h>
78#include <errno.h>
79#include <signal.h>
80#include <stdlib.h>
81#include <sys/prctl.h>
82#include <inttypes.h>
83#include <locale.h>
84#include <math.h>
85#include <sys/types.h>
86#include <sys/stat.h>
87#include <sys/wait.h>
88#include <unistd.h>
89#include <sys/time.h>
90#include <sys/resource.h>
91#include <linux/err.h>
92
93#include <linux/ctype.h>
94#include <perf/evlist.h>
95#include <internal/threadmap.h>
96
97#define DEFAULT_SEPARATOR " "
98#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
99
100static void print_counters(struct timespec *ts, int argc, const char **argv);
101
102static struct evlist *evsel_list;
103static struct parse_events_option_args parse_events_option_args = {
104 .evlistp = &evsel_list,
105};
106
107static bool all_counters_use_bpf = true;
108
109static struct target target = {
110 .uid = UINT_MAX,
111};
112
113#define METRIC_ONLY_LEN 20
114
115static volatile sig_atomic_t child_pid = -1;
116static int detailed_run = 0;
117static bool transaction_run;
118static bool topdown_run = false;
119static bool smi_cost = false;
120static bool smi_reset = false;
121static int big_num_opt = -1;
122static const char *pre_cmd = NULL;
123static const char *post_cmd = NULL;
124static bool sync_run = false;
125static bool forever = false;
126static bool force_metric_only = false;
127static struct timespec ref_time;
128static bool append_file;
129static bool interval_count;
130static const char *output_name;
131static int output_fd;
132static char *metrics;
133
134struct perf_stat {
135 bool record;
136 struct perf_data data;
137 struct perf_session *session;
138 u64 bytes_written;
139 struct perf_tool tool;
140 bool maps_allocated;
141 struct perf_cpu_map *cpus;
142 struct perf_thread_map *threads;
143 enum aggr_mode aggr_mode;
144 u32 aggr_level;
145};
146
147static struct perf_stat perf_stat;
148#define STAT_RECORD perf_stat.record
149
150static volatile sig_atomic_t done = 0;
151
152static struct perf_stat_config stat_config = {
153 .aggr_mode = AGGR_GLOBAL,
154 .aggr_level = MAX_CACHE_LVL + 1,
155 .scale = true,
156 .unit_width = 4, /* strlen("unit") */
157 .run_count = 1,
158 .metric_only_len = METRIC_ONLY_LEN,
159 .walltime_nsecs_stats = &walltime_nsecs_stats,
160 .ru_stats = &ru_stats,
161 .big_num = true,
162 .ctl_fd = -1,
163 .ctl_fd_ack = -1,
164 .iostat_run = false,
165};
166
167static bool cpus_map_matched(struct evsel *a, struct evsel *b)
168{
169 if (!a->core.cpus && !b->core.cpus)
170 return true;
171
172 if (!a->core.cpus || !b->core.cpus)
173 return false;
174
175 if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus))
176 return false;
177
178 for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) {
179 if (perf_cpu_map__cpu(a->core.cpus, i).cpu !=
180 perf_cpu_map__cpu(b->core.cpus, i).cpu)
181 return false;
182 }
183
184 return true;
185}
186
187static void evlist__check_cpu_maps(struct evlist *evlist)
188{
189 struct evsel *evsel, *warned_leader = NULL;
190
191 evlist__for_each_entry(evlist, evsel) {
192 struct evsel *leader = evsel__leader(evsel);
193
194 /* Check that leader matches cpus with each member. */
195 if (leader == evsel)
196 continue;
197 if (cpus_map_matched(leader, evsel))
198 continue;
199
200 /* If there's mismatch disable the group and warn user. */
201 if (warned_leader != leader) {
202 char buf[200];
203
204 pr_warning("WARNING: grouped events cpus do not match.\n"
205 "Events with CPUs not matching the leader will "
206 "be removed from the group.\n");
207 evsel__group_desc(leader, buf, sizeof(buf));
208 pr_warning(" %s\n", buf);
209 warned_leader = leader;
210 }
211 if (verbose > 0) {
212 char buf[200];
213
214 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
215 pr_warning(" %s: %s\n", leader->name, buf);
216 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
217 pr_warning(" %s: %s\n", evsel->name, buf);
218 }
219
220 evsel__remove_from_group(evsel, leader);
221 }
222}
223
224static inline void diff_timespec(struct timespec *r, struct timespec *a,
225 struct timespec *b)
226{
227 r->tv_sec = a->tv_sec - b->tv_sec;
228 if (a->tv_nsec < b->tv_nsec) {
229 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
230 r->tv_sec--;
231 } else {
232 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
233 }
234}
235
236static void perf_stat__reset_stats(void)
237{
238 evlist__reset_stats(evsel_list);
239 perf_stat__reset_shadow_stats();
240}
241
242static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
243 union perf_event *event,
244 struct perf_sample *sample __maybe_unused,
245 struct machine *machine __maybe_unused)
246{
247 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
248 pr_err("failed to write perf data, error: %m\n");
249 return -1;
250 }
251
252 perf_stat.bytes_written += event->header.size;
253 return 0;
254}
255
256static int write_stat_round_event(u64 tm, u64 type)
257{
258 return perf_event__synthesize_stat_round(NULL, tm, type,
259 process_synthesized_event,
260 NULL);
261}
262
263#define WRITE_STAT_ROUND_EVENT(time, interval) \
264 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
265
266#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
267
268static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,
269 struct perf_counts_values *count)
270{
271 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
272 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
273
274 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
275 process_synthesized_event, NULL);
276}
277
278static int read_single_counter(struct evsel *counter, int cpu_map_idx,
279 int thread, struct timespec *rs)
280{
281 switch(counter->tool_event) {
282 case PERF_TOOL_DURATION_TIME: {
283 u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL;
284 struct perf_counts_values *count =
285 perf_counts(counter->counts, cpu_map_idx, thread);
286 count->ena = count->run = val;
287 count->val = val;
288 return 0;
289 }
290 case PERF_TOOL_USER_TIME:
291 case PERF_TOOL_SYSTEM_TIME: {
292 u64 val;
293 struct perf_counts_values *count =
294 perf_counts(counter->counts, cpu_map_idx, thread);
295 if (counter->tool_event == PERF_TOOL_USER_TIME)
296 val = ru_stats.ru_utime_usec_stat.mean;
297 else
298 val = ru_stats.ru_stime_usec_stat.mean;
299 count->ena = count->run = val;
300 count->val = val;
301 return 0;
302 }
303 default:
304 case PERF_TOOL_NONE:
305 return evsel__read_counter(counter, cpu_map_idx, thread);
306 case PERF_TOOL_MAX:
307 /* This should never be reached */
308 return 0;
309 }
310}
311
312/*
313 * Read out the results of a single counter:
314 * do not aggregate counts across CPUs in system-wide mode
315 */
316static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx)
317{
318 int nthreads = perf_thread_map__nr(evsel_list->core.threads);
319 int thread;
320
321 if (!counter->supported)
322 return -ENOENT;
323
324 for (thread = 0; thread < nthreads; thread++) {
325 struct perf_counts_values *count;
326
327 count = perf_counts(counter->counts, cpu_map_idx, thread);
328
329 /*
330 * The leader's group read loads data into its group members
331 * (via evsel__read_counter()) and sets their count->loaded.
332 */
333 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&
334 read_single_counter(counter, cpu_map_idx, thread, rs)) {
335 counter->counts->scaled = -1;
336 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
337 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
338 return -1;
339 }
340
341 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
342
343 if (STAT_RECORD) {
344 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {
345 pr_err("failed to write stat event\n");
346 return -1;
347 }
348 }
349
350 if (verbose > 1) {
351 fprintf(stat_config.output,
352 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
353 evsel__name(counter),
354 perf_cpu_map__cpu(evsel__cpus(counter),
355 cpu_map_idx).cpu,
356 count->val, count->ena, count->run);
357 }
358 }
359
360 return 0;
361}
362
363static int read_affinity_counters(struct timespec *rs)
364{
365 struct evlist_cpu_iterator evlist_cpu_itr;
366 struct affinity saved_affinity, *affinity;
367
368 if (all_counters_use_bpf)
369 return 0;
370
371 if (!target__has_cpu(&target) || target__has_per_thread(&target))
372 affinity = NULL;
373 else if (affinity__setup(&saved_affinity) < 0)
374 return -1;
375 else
376 affinity = &saved_affinity;
377
378 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
379 struct evsel *counter = evlist_cpu_itr.evsel;
380
381 if (evsel__is_bpf(counter))
382 continue;
383
384 if (!counter->err) {
385 counter->err = read_counter_cpu(counter, rs,
386 evlist_cpu_itr.cpu_map_idx);
387 }
388 }
389 if (affinity)
390 affinity__cleanup(&saved_affinity);
391
392 return 0;
393}
394
395static int read_bpf_map_counters(void)
396{
397 struct evsel *counter;
398 int err;
399
400 evlist__for_each_entry(evsel_list, counter) {
401 if (!evsel__is_bpf(counter))
402 continue;
403
404 err = bpf_counter__read(counter);
405 if (err)
406 return err;
407 }
408 return 0;
409}
410
411static int read_counters(struct timespec *rs)
412{
413 if (!stat_config.stop_read_counter) {
414 if (read_bpf_map_counters() ||
415 read_affinity_counters(rs))
416 return -1;
417 }
418 return 0;
419}
420
421static void process_counters(void)
422{
423 struct evsel *counter;
424
425 evlist__for_each_entry(evsel_list, counter) {
426 if (counter->err)
427 pr_debug("failed to read counter %s\n", counter->name);
428 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
429 pr_warning("failed to process counter %s\n", counter->name);
430 counter->err = 0;
431 }
432
433 perf_stat_merge_counters(&stat_config, evsel_list);
434 perf_stat_process_percore(&stat_config, evsel_list);
435}
436
437static void process_interval(void)
438{
439 struct timespec ts, rs;
440
441 clock_gettime(CLOCK_MONOTONIC, &ts);
442 diff_timespec(&rs, &ts, &ref_time);
443
444 evlist__reset_aggr_stats(evsel_list);
445
446 if (read_counters(&rs) == 0)
447 process_counters();
448
449 if (STAT_RECORD) {
450 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
451 pr_err("failed to write stat round event\n");
452 }
453
454 init_stats(&walltime_nsecs_stats);
455 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
456 print_counters(&rs, 0, NULL);
457}
458
459static bool handle_interval(unsigned int interval, int *times)
460{
461 if (interval) {
462 process_interval();
463 if (interval_count && !(--(*times)))
464 return true;
465 }
466 return false;
467}
468
469static int enable_counters(void)
470{
471 struct evsel *evsel;
472 int err;
473
474 evlist__for_each_entry(evsel_list, evsel) {
475 if (!evsel__is_bpf(evsel))
476 continue;
477
478 err = bpf_counter__enable(evsel);
479 if (err)
480 return err;
481 }
482
483 if (!target__enable_on_exec(&target)) {
484 if (!all_counters_use_bpf)
485 evlist__enable(evsel_list);
486 }
487 return 0;
488}
489
490static void disable_counters(void)
491{
492 struct evsel *counter;
493
494 /*
495 * If we don't have tracee (attaching to task or cpu), counters may
496 * still be running. To get accurate group ratios, we must stop groups
497 * from counting before reading their constituent counters.
498 */
499 if (!target__none(&target)) {
500 evlist__for_each_entry(evsel_list, counter)
501 bpf_counter__disable(counter);
502 if (!all_counters_use_bpf)
503 evlist__disable(evsel_list);
504 }
505}
506
507static volatile sig_atomic_t workload_exec_errno;
508
509/*
510 * evlist__prepare_workload will send a SIGUSR1
511 * if the fork fails, since we asked by setting its
512 * want_signal to true.
513 */
514static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
515 void *ucontext __maybe_unused)
516{
517 workload_exec_errno = info->si_value.sival_int;
518}
519
520static bool evsel__should_store_id(struct evsel *counter)
521{
522 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
523}
524
525static bool is_target_alive(struct target *_target,
526 struct perf_thread_map *threads)
527{
528 struct stat st;
529 int i;
530
531 if (!target__has_task(_target))
532 return true;
533
534 for (i = 0; i < threads->nr; i++) {
535 char path[PATH_MAX];
536
537 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
538 threads->map[i].pid);
539
540 if (!stat(path, &st))
541 return true;
542 }
543
544 return false;
545}
546
547static void process_evlist(struct evlist *evlist, unsigned int interval)
548{
549 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
550
551 if (evlist__ctlfd_process(evlist, &cmd) > 0) {
552 switch (cmd) {
553 case EVLIST_CTL_CMD_ENABLE:
554 fallthrough;
555 case EVLIST_CTL_CMD_DISABLE:
556 if (interval)
557 process_interval();
558 break;
559 case EVLIST_CTL_CMD_SNAPSHOT:
560 case EVLIST_CTL_CMD_ACK:
561 case EVLIST_CTL_CMD_UNSUPPORTED:
562 case EVLIST_CTL_CMD_EVLIST:
563 case EVLIST_CTL_CMD_STOP:
564 case EVLIST_CTL_CMD_PING:
565 default:
566 break;
567 }
568 }
569}
570
571static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
572 int *time_to_sleep)
573{
574 int tts = *time_to_sleep;
575 struct timespec time_diff;
576
577 diff_timespec(&time_diff, time_stop, time_start);
578
579 tts -= time_diff.tv_sec * MSEC_PER_SEC +
580 time_diff.tv_nsec / NSEC_PER_MSEC;
581
582 if (tts < 0)
583 tts = 0;
584
585 *time_to_sleep = tts;
586}
587
588static int dispatch_events(bool forks, int timeout, int interval, int *times)
589{
590 int child_exited = 0, status = 0;
591 int time_to_sleep, sleep_time;
592 struct timespec time_start, time_stop;
593
594 if (interval)
595 sleep_time = interval;
596 else if (timeout)
597 sleep_time = timeout;
598 else
599 sleep_time = 1000;
600
601 time_to_sleep = sleep_time;
602
603 while (!done) {
604 if (forks)
605 child_exited = waitpid(child_pid, &status, WNOHANG);
606 else
607 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
608
609 if (child_exited)
610 break;
611
612 clock_gettime(CLOCK_MONOTONIC, &time_start);
613 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
614 if (timeout || handle_interval(interval, times))
615 break;
616 time_to_sleep = sleep_time;
617 } else { /* fd revent */
618 process_evlist(evsel_list, interval);
619 clock_gettime(CLOCK_MONOTONIC, &time_stop);
620 compute_tts(&time_start, &time_stop, &time_to_sleep);
621 }
622 }
623
624 return status;
625}
626
627enum counter_recovery {
628 COUNTER_SKIP,
629 COUNTER_RETRY,
630 COUNTER_FATAL,
631};
632
633static enum counter_recovery stat_handle_error(struct evsel *counter)
634{
635 char msg[BUFSIZ];
636 /*
637 * PPC returns ENXIO for HW counters until 2.6.37
638 * (behavior changed with commit b0a873e).
639 */
640 if (errno == EINVAL || errno == ENOSYS ||
641 errno == ENOENT || errno == EOPNOTSUPP ||
642 errno == ENXIO) {
643 if (verbose > 0)
644 ui__warning("%s event is not supported by the kernel.\n",
645 evsel__name(counter));
646 counter->supported = false;
647 /*
648 * errored is a sticky flag that means one of the counter's
649 * cpu event had a problem and needs to be reexamined.
650 */
651 counter->errored = true;
652
653 if ((evsel__leader(counter) != counter) ||
654 !(counter->core.leader->nr_members > 1))
655 return COUNTER_SKIP;
656 } else if (evsel__fallback(counter, &target, errno, msg, sizeof(msg))) {
657 if (verbose > 0)
658 ui__warning("%s\n", msg);
659 return COUNTER_RETRY;
660 } else if (target__has_per_thread(&target) &&
661 evsel_list->core.threads &&
662 evsel_list->core.threads->err_thread != -1) {
663 /*
664 * For global --per-thread case, skip current
665 * error thread.
666 */
667 if (!thread_map__remove(evsel_list->core.threads,
668 evsel_list->core.threads->err_thread)) {
669 evsel_list->core.threads->err_thread = -1;
670 return COUNTER_RETRY;
671 }
672 } else if (counter->skippable) {
673 if (verbose > 0)
674 ui__warning("skipping event %s that kernel failed to open .\n",
675 evsel__name(counter));
676 counter->supported = false;
677 counter->errored = true;
678 return COUNTER_SKIP;
679 }
680
681 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
682 ui__error("%s\n", msg);
683
684 if (child_pid != -1)
685 kill(child_pid, SIGTERM);
686 return COUNTER_FATAL;
687}
688
689static int __run_perf_stat(int argc, const char **argv, int run_idx)
690{
691 int interval = stat_config.interval;
692 int times = stat_config.times;
693 int timeout = stat_config.timeout;
694 char msg[BUFSIZ];
695 unsigned long long t0, t1;
696 struct evsel *counter;
697 size_t l;
698 int status = 0;
699 const bool forks = (argc > 0);
700 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
701 struct evlist_cpu_iterator evlist_cpu_itr;
702 struct affinity saved_affinity, *affinity = NULL;
703 int err;
704 bool second_pass = false;
705
706 if (forks) {
707 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
708 perror("failed to prepare workload");
709 return -1;
710 }
711 child_pid = evsel_list->workload.pid;
712 }
713
714 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
715 if (affinity__setup(&saved_affinity) < 0)
716 return -1;
717 affinity = &saved_affinity;
718 }
719
720 evlist__for_each_entry(evsel_list, counter) {
721 counter->reset_group = false;
722 if (bpf_counter__load(counter, &target))
723 return -1;
724 if (!(evsel__is_bperf(counter)))
725 all_counters_use_bpf = false;
726 }
727
728 evlist__reset_aggr_stats(evsel_list);
729
730 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
731 counter = evlist_cpu_itr.evsel;
732
733 /*
734 * bperf calls evsel__open_per_cpu() in bperf__load(), so
735 * no need to call it again here.
736 */
737 if (target.use_bpf)
738 break;
739
740 if (counter->reset_group || counter->errored)
741 continue;
742 if (evsel__is_bperf(counter))
743 continue;
744try_again:
745 if (create_perf_stat_counter(counter, &stat_config, &target,
746 evlist_cpu_itr.cpu_map_idx) < 0) {
747
748 /*
749 * Weak group failed. We cannot just undo this here
750 * because earlier CPUs might be in group mode, and the kernel
751 * doesn't support mixing group and non group reads. Defer
752 * it to later.
753 * Don't close here because we're in the wrong affinity.
754 */
755 if ((errno == EINVAL || errno == EBADF) &&
756 evsel__leader(counter) != counter &&
757 counter->weak_group) {
758 evlist__reset_weak_group(evsel_list, counter, false);
759 assert(counter->reset_group);
760 second_pass = true;
761 continue;
762 }
763
764 switch (stat_handle_error(counter)) {
765 case COUNTER_FATAL:
766 return -1;
767 case COUNTER_RETRY:
768 goto try_again;
769 case COUNTER_SKIP:
770 continue;
771 default:
772 break;
773 }
774
775 }
776 counter->supported = true;
777 }
778
779 if (second_pass) {
780 /*
781 * Now redo all the weak group after closing them,
782 * and also close errored counters.
783 */
784
785 /* First close errored or weak retry */
786 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
787 counter = evlist_cpu_itr.evsel;
788
789 if (!counter->reset_group && !counter->errored)
790 continue;
791
792 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
793 }
794 /* Now reopen weak */
795 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
796 counter = evlist_cpu_itr.evsel;
797
798 if (!counter->reset_group)
799 continue;
800try_again_reset:
801 pr_debug2("reopening weak %s\n", evsel__name(counter));
802 if (create_perf_stat_counter(counter, &stat_config, &target,
803 evlist_cpu_itr.cpu_map_idx) < 0) {
804
805 switch (stat_handle_error(counter)) {
806 case COUNTER_FATAL:
807 return -1;
808 case COUNTER_RETRY:
809 goto try_again_reset;
810 case COUNTER_SKIP:
811 continue;
812 default:
813 break;
814 }
815 }
816 counter->supported = true;
817 }
818 }
819 affinity__cleanup(affinity);
820
821 evlist__for_each_entry(evsel_list, counter) {
822 if (!counter->supported) {
823 perf_evsel__free_fd(&counter->core);
824 continue;
825 }
826
827 l = strlen(counter->unit);
828 if (l > stat_config.unit_width)
829 stat_config.unit_width = l;
830
831 if (evsel__should_store_id(counter) &&
832 evsel__store_ids(counter, evsel_list))
833 return -1;
834 }
835
836 if (evlist__apply_filters(evsel_list, &counter)) {
837 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
838 counter->filter, evsel__name(counter), errno,
839 str_error_r(errno, msg, sizeof(msg)));
840 return -1;
841 }
842
843 if (STAT_RECORD) {
844 int fd = perf_data__fd(&perf_stat.data);
845
846 if (is_pipe) {
847 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
848 } else {
849 err = perf_session__write_header(perf_stat.session, evsel_list,
850 fd, false);
851 }
852
853 if (err < 0)
854 return err;
855
856 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
857 process_synthesized_event, is_pipe);
858 if (err < 0)
859 return err;
860 }
861
862 if (target.initial_delay) {
863 pr_info(EVLIST_DISABLED_MSG);
864 } else {
865 err = enable_counters();
866 if (err)
867 return -1;
868 }
869
870 /* Exec the command, if any */
871 if (forks)
872 evlist__start_workload(evsel_list);
873
874 if (target.initial_delay > 0) {
875 usleep(target.initial_delay * USEC_PER_MSEC);
876 err = enable_counters();
877 if (err)
878 return -1;
879
880 pr_info(EVLIST_ENABLED_MSG);
881 }
882
883 t0 = rdclock();
884 clock_gettime(CLOCK_MONOTONIC, &ref_time);
885
886 if (forks) {
887 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
888 status = dispatch_events(forks, timeout, interval, ×);
889 if (child_pid != -1) {
890 if (timeout)
891 kill(child_pid, SIGTERM);
892 wait4(child_pid, &status, 0, &stat_config.ru_data);
893 }
894
895 if (workload_exec_errno) {
896 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
897 pr_err("Workload failed: %s\n", emsg);
898 return -1;
899 }
900
901 if (WIFSIGNALED(status))
902 psignal(WTERMSIG(status), argv[0]);
903 } else {
904 status = dispatch_events(forks, timeout, interval, ×);
905 }
906
907 disable_counters();
908
909 t1 = rdclock();
910
911 if (stat_config.walltime_run_table)
912 stat_config.walltime_run[run_idx] = t1 - t0;
913
914 if (interval && stat_config.summary) {
915 stat_config.interval = 0;
916 stat_config.stop_read_counter = true;
917 init_stats(&walltime_nsecs_stats);
918 update_stats(&walltime_nsecs_stats, t1 - t0);
919
920 evlist__copy_prev_raw_counts(evsel_list);
921 evlist__reset_prev_raw_counts(evsel_list);
922 evlist__reset_aggr_stats(evsel_list);
923 } else {
924 update_stats(&walltime_nsecs_stats, t1 - t0);
925 update_rusage_stats(&ru_stats, &stat_config.ru_data);
926 }
927
928 /*
929 * Closing a group leader splits the group, and as we only disable
930 * group leaders, results in remaining events becoming enabled. To
931 * avoid arbitrary skew, we must read all counters before closing any
932 * group leaders.
933 */
934 if (read_counters(&(struct timespec) { .tv_nsec = t1-t0 }) == 0)
935 process_counters();
936
937 /*
938 * We need to keep evsel_list alive, because it's processed
939 * later the evsel_list will be closed after.
940 */
941 if (!STAT_RECORD)
942 evlist__close(evsel_list);
943
944 return WEXITSTATUS(status);
945}
946
947static int run_perf_stat(int argc, const char **argv, int run_idx)
948{
949 int ret;
950
951 if (pre_cmd) {
952 ret = system(pre_cmd);
953 if (ret)
954 return ret;
955 }
956
957 if (sync_run)
958 sync();
959
960 ret = __run_perf_stat(argc, argv, run_idx);
961 if (ret)
962 return ret;
963
964 if (post_cmd) {
965 ret = system(post_cmd);
966 if (ret)
967 return ret;
968 }
969
970 return ret;
971}
972
973static void print_counters(struct timespec *ts, int argc, const char **argv)
974{
975 /* Do not print anything if we record to the pipe. */
976 if (STAT_RECORD && perf_stat.data.is_pipe)
977 return;
978 if (quiet)
979 return;
980
981 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
982}
983
984static volatile sig_atomic_t signr = -1;
985
986static void skip_signal(int signo)
987{
988 if ((child_pid == -1) || stat_config.interval)
989 done = 1;
990
991 signr = signo;
992 /*
993 * render child_pid harmless
994 * won't send SIGTERM to a random
995 * process in case of race condition
996 * and fast PID recycling
997 */
998 child_pid = -1;
999}
1000
1001static void sig_atexit(void)
1002{
1003 sigset_t set, oset;
1004
1005 /*
1006 * avoid race condition with SIGCHLD handler
1007 * in skip_signal() which is modifying child_pid
1008 * goal is to avoid send SIGTERM to a random
1009 * process
1010 */
1011 sigemptyset(&set);
1012 sigaddset(&set, SIGCHLD);
1013 sigprocmask(SIG_BLOCK, &set, &oset);
1014
1015 if (child_pid != -1)
1016 kill(child_pid, SIGTERM);
1017
1018 sigprocmask(SIG_SETMASK, &oset, NULL);
1019
1020 if (signr == -1)
1021 return;
1022
1023 signal(signr, SIG_DFL);
1024 kill(getpid(), signr);
1025}
1026
1027void perf_stat__set_big_num(int set)
1028{
1029 stat_config.big_num = (set != 0);
1030}
1031
1032void perf_stat__set_no_csv_summary(int set)
1033{
1034 stat_config.no_csv_summary = (set != 0);
1035}
1036
1037static int stat__set_big_num(const struct option *opt __maybe_unused,
1038 const char *s __maybe_unused, int unset)
1039{
1040 big_num_opt = unset ? 0 : 1;
1041 perf_stat__set_big_num(!unset);
1042 return 0;
1043}
1044
1045static int enable_metric_only(const struct option *opt __maybe_unused,
1046 const char *s __maybe_unused, int unset)
1047{
1048 force_metric_only = true;
1049 stat_config.metric_only = !unset;
1050 return 0;
1051}
1052
1053static int append_metric_groups(const struct option *opt __maybe_unused,
1054 const char *str,
1055 int unset __maybe_unused)
1056{
1057 if (metrics) {
1058 char *tmp;
1059
1060 if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
1061 return -ENOMEM;
1062 free(metrics);
1063 metrics = tmp;
1064 } else {
1065 metrics = strdup(str);
1066 if (!metrics)
1067 return -ENOMEM;
1068 }
1069 return 0;
1070}
1071
1072static int parse_control_option(const struct option *opt,
1073 const char *str,
1074 int unset __maybe_unused)
1075{
1076 struct perf_stat_config *config = opt->value;
1077
1078 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1079}
1080
1081static int parse_stat_cgroups(const struct option *opt,
1082 const char *str, int unset)
1083{
1084 if (stat_config.cgroup_list) {
1085 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1086 return -1;
1087 }
1088
1089 return parse_cgroups(opt, str, unset);
1090}
1091
1092static int parse_cputype(const struct option *opt,
1093 const char *str,
1094 int unset __maybe_unused)
1095{
1096 const struct perf_pmu *pmu;
1097 struct evlist *evlist = *(struct evlist **)opt->value;
1098
1099 if (!list_empty(&evlist->core.entries)) {
1100 fprintf(stderr, "Must define cputype before events/metrics\n");
1101 return -1;
1102 }
1103
1104 pmu = perf_pmus__pmu_for_pmu_filter(str);
1105 if (!pmu) {
1106 fprintf(stderr, "--cputype %s is not supported!\n", str);
1107 return -1;
1108 }
1109 parse_events_option_args.pmu_filter = pmu->name;
1110
1111 return 0;
1112}
1113
1114static int parse_cache_level(const struct option *opt,
1115 const char *str,
1116 int unset __maybe_unused)
1117{
1118 int level;
1119 u32 *aggr_mode = (u32 *)opt->value;
1120 u32 *aggr_level = (u32 *)opt->data;
1121
1122 /*
1123 * If no string is specified, aggregate based on the topology of
1124 * Last Level Cache (LLC). Since the LLC level can change from
1125 * architecture to architecture, set level greater than
1126 * MAX_CACHE_LVL which will be interpreted as LLC.
1127 */
1128 if (str == NULL) {
1129 level = MAX_CACHE_LVL + 1;
1130 goto out;
1131 }
1132
1133 /*
1134 * The format to specify cache level is LX or lX where X is the
1135 * cache level.
1136 */
1137 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) {
1138 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1139 MAX_CACHE_LVL,
1140 MAX_CACHE_LVL);
1141 return -EINVAL;
1142 }
1143
1144 level = atoi(&str[1]);
1145 if (level < 1) {
1146 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1147 MAX_CACHE_LVL,
1148 MAX_CACHE_LVL);
1149 return -EINVAL;
1150 }
1151
1152 if (level > MAX_CACHE_LVL) {
1153 pr_err("perf only supports max cache level of %d.\n"
1154 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL);
1155 return -EINVAL;
1156 }
1157out:
1158 *aggr_mode = AGGR_CACHE;
1159 *aggr_level = level;
1160 return 0;
1161}
1162
1163static struct option stat_options[] = {
1164 OPT_BOOLEAN('T', "transaction", &transaction_run,
1165 "hardware transaction statistics"),
1166 OPT_CALLBACK('e', "event", &parse_events_option_args, "event",
1167 "event selector. use 'perf list' to list available events",
1168 parse_events_option),
1169 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1170 "event filter", parse_filter),
1171 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
1172 "child tasks do not inherit counters"),
1173 OPT_STRING('p', "pid", &target.pid, "pid",
1174 "stat events on existing process id"),
1175 OPT_STRING('t', "tid", &target.tid, "tid",
1176 "stat events on existing thread id"),
1177#ifdef HAVE_BPF_SKEL
1178 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
1179 "stat events on existing bpf program id"),
1180 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
1181 "use bpf program to count events"),
1182 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
1183 "path to perf_event_attr map"),
1184#endif
1185 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1186 "system-wide collection from all CPUs"),
1187 OPT_BOOLEAN(0, "scale", &stat_config.scale,
1188 "Use --no-scale to disable counter scaling for multiplexing"),
1189 OPT_INCR('v', "verbose", &verbose,
1190 "be more verbose (show counter open errors, etc)"),
1191 OPT_INTEGER('r', "repeat", &stat_config.run_count,
1192 "repeat command and print average + stddev (max: 100, forever: 0)"),
1193 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
1194 "display details about each run (only with -r option)"),
1195 OPT_BOOLEAN('n', "null", &stat_config.null_run,
1196 "null run - dont start any counters"),
1197 OPT_INCR('d', "detailed", &detailed_run,
1198 "detailed run - start a lot of events"),
1199 OPT_BOOLEAN('S', "sync", &sync_run,
1200 "call sync() before starting a run"),
1201 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1202 "print large numbers with thousands\' separators",
1203 stat__set_big_num),
1204 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1205 "list of cpus to monitor in system-wide"),
1206 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1207 "disable aggregation across CPUs or PMUs", AGGR_NONE),
1208 OPT_SET_UINT(0, "no-merge", &stat_config.aggr_mode,
1209 "disable aggregation the same as -A or -no-aggr", AGGR_NONE),
1210 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
1211 "Merge identical named hybrid events"),
1212 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
1213 "print counts with custom separator"),
1214 OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
1215 "print counts in JSON format"),
1216 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1217 "monitor event in cgroup name only", parse_stat_cgroups),
1218 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
1219 "expand events for each cgroup"),
1220 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1221 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1222 OPT_INTEGER(0, "log-fd", &output_fd,
1223 "log output to fd, instead of stderr"),
1224 OPT_STRING(0, "pre", &pre_cmd, "command",
1225 "command to run prior to the measured command"),
1226 OPT_STRING(0, "post", &post_cmd, "command",
1227 "command to run after to the measured command"),
1228 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1229 "print counts at regular interval in ms "
1230 "(overhead is possible for values <= 100ms)"),
1231 OPT_INTEGER(0, "interval-count", &stat_config.times,
1232 "print counts for fixed number of times"),
1233 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
1234 "clear screen in between new interval"),
1235 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
1236 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
1237 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1238 "aggregate counts per processor socket", AGGR_SOCKET),
1239 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode,
1240 "aggregate counts per processor die", AGGR_DIE),
1241 OPT_SET_UINT(0, "per-cluster", &stat_config.aggr_mode,
1242 "aggregate counts per processor cluster", AGGR_CLUSTER),
1243 OPT_CALLBACK_OPTARG(0, "per-cache", &stat_config.aggr_mode, &stat_config.aggr_level,
1244 "cache level", "aggregate count at this cache level (Default: LLC)",
1245 parse_cache_level),
1246 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1247 "aggregate counts per physical processor core", AGGR_CORE),
1248 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1249 "aggregate counts per thread", AGGR_THREAD),
1250 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode,
1251 "aggregate counts per numa node", AGGR_NODE),
1252 OPT_INTEGER('D', "delay", &target.initial_delay,
1253 "ms to wait before starting measurement after program start (-1: start with events disabled)"),
1254 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
1255 "Only print computed metrics. No raw values", enable_metric_only),
1256 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
1257 "don't group metric events, impacts multiplexing"),
1258 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
1259 "don't try to share events between metrics in a group"),
1260 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,
1261 "disable adding events for the metric threshold calculation"),
1262 OPT_BOOLEAN(0, "topdown", &topdown_run,
1263 "measure top-down statistics"),
1264 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
1265 "Set the metrics level for the top-down statistics (0: max level)"),
1266 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
1267 "measure SMI cost"),
1268 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
1269 "monitor specified metrics or metric groups (separated by ,)",
1270 append_metric_groups),
1271 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
1272 "Configure all used events to run in kernel space.",
1273 PARSE_OPT_EXCLUSIVE),
1274 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
1275 "Configure all used events to run in user space.",
1276 PARSE_OPT_EXCLUSIVE),
1277 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
1278 "Use with 'percore' event qualifier to show the event "
1279 "counts of one hardware thread by sum up total hardware "
1280 "threads of same physical core"),
1281 OPT_BOOLEAN(0, "summary", &stat_config.summary,
1282 "print summary for interval mode"),
1283 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
1284 "don't print 'summary' for CSV summary output"),
1285 OPT_BOOLEAN(0, "quiet", &quiet,
1286 "don't print any output, messages or warnings (useful with record)"),
1287 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
1288 "Only enable events on applying cpu with this type "
1289 "for hybrid platform (e.g. core or atom)",
1290 parse_cputype),
1291#ifdef HAVE_LIBPFM
1292 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
1293 "libpfm4 event selector. use 'perf list' to list available events",
1294 parse_libpfm_events_option),
1295#endif
1296 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
1297 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
1298 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
1299 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
1300 parse_control_option),
1301 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
1302 "measure I/O performance metrics provided by arch/platform",
1303 iostat_parse),
1304 OPT_END()
1305};
1306
1307/**
1308 * Calculate the cache instance ID from the map in
1309 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1310 * Cache instance ID is the first CPU reported in the shared_cpu_list file.
1311 */
1312static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)
1313{
1314 int id;
1315 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map);
1316
1317 /*
1318 * If the map contains no CPU, consider the current CPU to
1319 * be the first online CPU in the cache domain else use the
1320 * first online CPU of the cache domain as the ID.
1321 */
1322 if (perf_cpu_map__has_any_cpu_or_is_empty(cpu_map))
1323 id = cpu.cpu;
1324 else
1325 id = perf_cpu_map__cpu(cpu_map, 0).cpu;
1326
1327 /* Free the perf_cpu_map used to find the cache ID */
1328 perf_cpu_map__put(cpu_map);
1329
1330 return id;
1331}
1332
1333/**
1334 * cpu__get_cache_id - Returns 0 if successful in populating the
1335 * cache level and cache id. Cache level is read from
1336 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID
1337 * is the first CPU reported by
1338 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1339 */
1340static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache)
1341{
1342 int ret = 0;
1343 u32 cache_level = stat_config.aggr_level;
1344 struct cpu_cache_level caches[MAX_CACHE_LVL];
1345 u32 i = 0, caches_cnt = 0;
1346
1347 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1348 cache->cache = -1;
1349
1350 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt);
1351 if (ret) {
1352 /*
1353 * If caches_cnt is not 0, cpu_cache_level data
1354 * was allocated when building the topology.
1355 * Free the allocated data before returning.
1356 */
1357 if (caches_cnt)
1358 goto free_caches;
1359
1360 return ret;
1361 }
1362
1363 if (!caches_cnt)
1364 return -1;
1365
1366 /*
1367 * Save the data for the highest level if no
1368 * level was specified by the user.
1369 */
1370 if (cache_level > MAX_CACHE_LVL) {
1371 int max_level_index = 0;
1372
1373 for (i = 1; i < caches_cnt; ++i) {
1374 if (caches[i].level > caches[max_level_index].level)
1375 max_level_index = i;
1376 }
1377
1378 cache->cache_lvl = caches[max_level_index].level;
1379 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map);
1380
1381 /* Reset i to 0 to free entire caches[] */
1382 i = 0;
1383 goto free_caches;
1384 }
1385
1386 for (i = 0; i < caches_cnt; ++i) {
1387 if (caches[i].level == cache_level) {
1388 cache->cache_lvl = cache_level;
1389 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1390 }
1391
1392 cpu_cache_level__free(&caches[i]);
1393 }
1394
1395free_caches:
1396 /*
1397 * Free all the allocated cpu_cache_level data.
1398 */
1399 while (i < caches_cnt)
1400 cpu_cache_level__free(&caches[i++]);
1401
1402 return ret;
1403}
1404
1405/**
1406 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache
1407 * level, die and socket populated with the cache instache ID, cache level,
1408 * die and socket for cpu. The function signature is compatible with
1409 * aggr_cpu_id_get_t.
1410 */
1411static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data)
1412{
1413 int ret;
1414 struct aggr_cpu_id id;
1415 struct perf_cache cache;
1416
1417 id = aggr_cpu_id__die(cpu, data);
1418 if (aggr_cpu_id__is_empty(&id))
1419 return id;
1420
1421 ret = cpu__get_cache_details(cpu, &cache);
1422 if (ret)
1423 return id;
1424
1425 id.cache_lvl = cache.cache_lvl;
1426 id.cache = cache.cache;
1427 return id;
1428}
1429
1430static const char *const aggr_mode__string[] = {
1431 [AGGR_CORE] = "core",
1432 [AGGR_CACHE] = "cache",
1433 [AGGR_CLUSTER] = "cluster",
1434 [AGGR_DIE] = "die",
1435 [AGGR_GLOBAL] = "global",
1436 [AGGR_NODE] = "node",
1437 [AGGR_NONE] = "none",
1438 [AGGR_SOCKET] = "socket",
1439 [AGGR_THREAD] = "thread",
1440 [AGGR_UNSET] = "unset",
1441};
1442
1443static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1444 struct perf_cpu cpu)
1445{
1446 return aggr_cpu_id__socket(cpu, /*data=*/NULL);
1447}
1448
1449static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1450 struct perf_cpu cpu)
1451{
1452 return aggr_cpu_id__die(cpu, /*data=*/NULL);
1453}
1454
1455static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused,
1456 struct perf_cpu cpu)
1457{
1458 return aggr_cpu_id__cache(cpu, /*data=*/NULL);
1459}
1460
1461static struct aggr_cpu_id perf_stat__get_cluster(struct perf_stat_config *config __maybe_unused,
1462 struct perf_cpu cpu)
1463{
1464 return aggr_cpu_id__cluster(cpu, /*data=*/NULL);
1465}
1466
1467static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1468 struct perf_cpu cpu)
1469{
1470 return aggr_cpu_id__core(cpu, /*data=*/NULL);
1471}
1472
1473static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1474 struct perf_cpu cpu)
1475{
1476 return aggr_cpu_id__node(cpu, /*data=*/NULL);
1477}
1478
1479static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
1480 struct perf_cpu cpu)
1481{
1482 return aggr_cpu_id__global(cpu, /*data=*/NULL);
1483}
1484
1485static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
1486 struct perf_cpu cpu)
1487{
1488 return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1489}
1490
1491static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1492 aggr_get_id_t get_id, struct perf_cpu cpu)
1493{
1494 struct aggr_cpu_id id;
1495
1496 /* per-process mode - should use global aggr mode */
1497 if (cpu.cpu == -1)
1498 return get_id(config, cpu);
1499
1500 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
1501 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
1502
1503 id = config->cpus_aggr_map->map[cpu.cpu];
1504 return id;
1505}
1506
1507static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1508 struct perf_cpu cpu)
1509{
1510 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
1511}
1512
1513static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1514 struct perf_cpu cpu)
1515{
1516 return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
1517}
1518
1519static struct aggr_cpu_id perf_stat__get_cluster_cached(struct perf_stat_config *config,
1520 struct perf_cpu cpu)
1521{
1522 return perf_stat__get_aggr(config, perf_stat__get_cluster, cpu);
1523}
1524
1525static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config,
1526 struct perf_cpu cpu)
1527{
1528 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu);
1529}
1530
1531static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1532 struct perf_cpu cpu)
1533{
1534 return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
1535}
1536
1537static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1538 struct perf_cpu cpu)
1539{
1540 return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
1541}
1542
1543static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
1544 struct perf_cpu cpu)
1545{
1546 return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
1547}
1548
1549static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
1550 struct perf_cpu cpu)
1551{
1552 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
1553}
1554
1555static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
1556{
1557 switch (aggr_mode) {
1558 case AGGR_SOCKET:
1559 return aggr_cpu_id__socket;
1560 case AGGR_DIE:
1561 return aggr_cpu_id__die;
1562 case AGGR_CLUSTER:
1563 return aggr_cpu_id__cluster;
1564 case AGGR_CACHE:
1565 return aggr_cpu_id__cache;
1566 case AGGR_CORE:
1567 return aggr_cpu_id__core;
1568 case AGGR_NODE:
1569 return aggr_cpu_id__node;
1570 case AGGR_NONE:
1571 return aggr_cpu_id__cpu;
1572 case AGGR_GLOBAL:
1573 return aggr_cpu_id__global;
1574 case AGGR_THREAD:
1575 case AGGR_UNSET:
1576 case AGGR_MAX:
1577 default:
1578 return NULL;
1579 }
1580}
1581
1582static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
1583{
1584 switch (aggr_mode) {
1585 case AGGR_SOCKET:
1586 return perf_stat__get_socket_cached;
1587 case AGGR_DIE:
1588 return perf_stat__get_die_cached;
1589 case AGGR_CLUSTER:
1590 return perf_stat__get_cluster_cached;
1591 case AGGR_CACHE:
1592 return perf_stat__get_cache_id_cached;
1593 case AGGR_CORE:
1594 return perf_stat__get_core_cached;
1595 case AGGR_NODE:
1596 return perf_stat__get_node_cached;
1597 case AGGR_NONE:
1598 return perf_stat__get_cpu_cached;
1599 case AGGR_GLOBAL:
1600 return perf_stat__get_global_cached;
1601 case AGGR_THREAD:
1602 case AGGR_UNSET:
1603 case AGGR_MAX:
1604 default:
1605 return NULL;
1606 }
1607}
1608
1609static int perf_stat_init_aggr_mode(void)
1610{
1611 int nr;
1612 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
1613
1614 if (get_id) {
1615 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1616 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1617 get_id, /*data=*/NULL, needs_sort);
1618 if (!stat_config.aggr_map) {
1619 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1620 return -1;
1621 }
1622 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
1623 }
1624
1625 if (stat_config.aggr_mode == AGGR_THREAD) {
1626 nr = perf_thread_map__nr(evsel_list->core.threads);
1627 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1628 if (stat_config.aggr_map == NULL)
1629 return -ENOMEM;
1630
1631 for (int s = 0; s < nr; s++) {
1632 struct aggr_cpu_id id = aggr_cpu_id__empty();
1633
1634 id.thread_idx = s;
1635 stat_config.aggr_map->map[s] = id;
1636 }
1637 return 0;
1638 }
1639
1640 /*
1641 * The evsel_list->cpus is the base we operate on,
1642 * taking the highest cpu number to be the size of
1643 * the aggregation translate cpumap.
1644 */
1645 if (!perf_cpu_map__has_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))
1646 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
1647 else
1648 nr = 0;
1649 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1650 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1651}
1652
1653static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1654{
1655 if (map) {
1656 WARN_ONCE(refcount_read(&map->refcnt) != 0,
1657 "cpu_aggr_map refcnt unbalanced\n");
1658 free(map);
1659 }
1660}
1661
1662static void cpu_aggr_map__put(struct cpu_aggr_map *map)
1663{
1664 if (map && refcount_dec_and_test(&map->refcnt))
1665 cpu_aggr_map__delete(map);
1666}
1667
1668static void perf_stat__exit_aggr_mode(void)
1669{
1670 cpu_aggr_map__put(stat_config.aggr_map);
1671 cpu_aggr_map__put(stat_config.cpus_aggr_map);
1672 stat_config.aggr_map = NULL;
1673 stat_config.cpus_aggr_map = NULL;
1674}
1675
1676static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
1677{
1678 struct perf_env *env = data;
1679 struct aggr_cpu_id id = aggr_cpu_id__empty();
1680
1681 if (cpu.cpu != -1)
1682 id.socket = env->cpu[cpu.cpu].socket_id;
1683
1684 return id;
1685}
1686
1687static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
1688{
1689 struct perf_env *env = data;
1690 struct aggr_cpu_id id = aggr_cpu_id__empty();
1691
1692 if (cpu.cpu != -1) {
1693 /*
1694 * die_id is relative to socket, so start
1695 * with the socket ID and then add die to
1696 * make a unique ID.
1697 */
1698 id.socket = env->cpu[cpu.cpu].socket_id;
1699 id.die = env->cpu[cpu.cpu].die_id;
1700 }
1701
1702 return id;
1703}
1704
1705static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env,
1706 u32 cache_level, struct aggr_cpu_id *id)
1707{
1708 int i;
1709 int caches_cnt = env->caches_cnt;
1710 struct cpu_cache_level *caches = env->caches;
1711
1712 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1713 id->cache = -1;
1714
1715 if (!caches_cnt)
1716 return;
1717
1718 for (i = caches_cnt - 1; i > -1; --i) {
1719 struct perf_cpu_map *cpu_map;
1720 int map_contains_cpu;
1721
1722 /*
1723 * If user has not specified a level, find the fist level with
1724 * the cpu in the map. Since building the map is expensive, do
1725 * this only if levels match.
1726 */
1727 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level)
1728 continue;
1729
1730 cpu_map = perf_cpu_map__new(caches[i].map);
1731 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu);
1732 perf_cpu_map__put(cpu_map);
1733
1734 if (map_contains_cpu != -1) {
1735 id->cache_lvl = caches[i].level;
1736 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1737 return;
1738 }
1739 }
1740}
1741
1742static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu,
1743 void *data)
1744{
1745 struct perf_env *env = data;
1746 struct aggr_cpu_id id = aggr_cpu_id__empty();
1747
1748 if (cpu.cpu != -1) {
1749 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level;
1750
1751 id.socket = env->cpu[cpu.cpu].socket_id;
1752 id.die = env->cpu[cpu.cpu].die_id;
1753 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id);
1754 }
1755
1756 return id;
1757}
1758
1759static struct aggr_cpu_id perf_env__get_cluster_aggr_by_cpu(struct perf_cpu cpu,
1760 void *data)
1761{
1762 struct perf_env *env = data;
1763 struct aggr_cpu_id id = aggr_cpu_id__empty();
1764
1765 if (cpu.cpu != -1) {
1766 id.socket = env->cpu[cpu.cpu].socket_id;
1767 id.die = env->cpu[cpu.cpu].die_id;
1768 id.cluster = env->cpu[cpu.cpu].cluster_id;
1769 }
1770
1771 return id;
1772}
1773
1774static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
1775{
1776 struct perf_env *env = data;
1777 struct aggr_cpu_id id = aggr_cpu_id__empty();
1778
1779 if (cpu.cpu != -1) {
1780 /*
1781 * core_id is relative to socket, die and cluster, we need a
1782 * global id. So we set socket, die id, cluster id and core id.
1783 */
1784 id.socket = env->cpu[cpu.cpu].socket_id;
1785 id.die = env->cpu[cpu.cpu].die_id;
1786 id.cluster = env->cpu[cpu.cpu].cluster_id;
1787 id.core = env->cpu[cpu.cpu].core_id;
1788 }
1789
1790 return id;
1791}
1792
1793static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
1794{
1795 struct perf_env *env = data;
1796 struct aggr_cpu_id id = aggr_cpu_id__empty();
1797
1798 if (cpu.cpu != -1) {
1799 /*
1800 * core_id is relative to socket and die,
1801 * we need a global id. So we set
1802 * socket, die id and core id
1803 */
1804 id.socket = env->cpu[cpu.cpu].socket_id;
1805 id.die = env->cpu[cpu.cpu].die_id;
1806 id.core = env->cpu[cpu.cpu].core_id;
1807 id.cpu = cpu;
1808 }
1809
1810 return id;
1811}
1812
1813static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
1814{
1815 struct aggr_cpu_id id = aggr_cpu_id__empty();
1816
1817 id.node = perf_env__numa_node(data, cpu);
1818 return id;
1819}
1820
1821static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
1822 void *data __maybe_unused)
1823{
1824 struct aggr_cpu_id id = aggr_cpu_id__empty();
1825
1826 /* it always aggregates to the cpu 0 */
1827 id.cpu = (struct perf_cpu){ .cpu = 0 };
1828 return id;
1829}
1830
1831static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1832 struct perf_cpu cpu)
1833{
1834 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1835}
1836static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1837 struct perf_cpu cpu)
1838{
1839 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1840}
1841
1842static struct aggr_cpu_id perf_stat__get_cluster_file(struct perf_stat_config *config __maybe_unused,
1843 struct perf_cpu cpu)
1844{
1845 return perf_env__get_cluster_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1846}
1847
1848static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused,
1849 struct perf_cpu cpu)
1850{
1851 return perf_env__get_cache_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1852}
1853
1854static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1855 struct perf_cpu cpu)
1856{
1857 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1858}
1859
1860static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
1861 struct perf_cpu cpu)
1862{
1863 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1864}
1865
1866static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1867 struct perf_cpu cpu)
1868{
1869 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1870}
1871
1872static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
1873 struct perf_cpu cpu)
1874{
1875 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1876}
1877
1878static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
1879{
1880 switch (aggr_mode) {
1881 case AGGR_SOCKET:
1882 return perf_env__get_socket_aggr_by_cpu;
1883 case AGGR_DIE:
1884 return perf_env__get_die_aggr_by_cpu;
1885 case AGGR_CLUSTER:
1886 return perf_env__get_cluster_aggr_by_cpu;
1887 case AGGR_CACHE:
1888 return perf_env__get_cache_aggr_by_cpu;
1889 case AGGR_CORE:
1890 return perf_env__get_core_aggr_by_cpu;
1891 case AGGR_NODE:
1892 return perf_env__get_node_aggr_by_cpu;
1893 case AGGR_GLOBAL:
1894 return perf_env__get_global_aggr_by_cpu;
1895 case AGGR_NONE:
1896 return perf_env__get_cpu_aggr_by_cpu;
1897 case AGGR_THREAD:
1898 case AGGR_UNSET:
1899 case AGGR_MAX:
1900 default:
1901 return NULL;
1902 }
1903}
1904
1905static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
1906{
1907 switch (aggr_mode) {
1908 case AGGR_SOCKET:
1909 return perf_stat__get_socket_file;
1910 case AGGR_DIE:
1911 return perf_stat__get_die_file;
1912 case AGGR_CLUSTER:
1913 return perf_stat__get_cluster_file;
1914 case AGGR_CACHE:
1915 return perf_stat__get_cache_file;
1916 case AGGR_CORE:
1917 return perf_stat__get_core_file;
1918 case AGGR_NODE:
1919 return perf_stat__get_node_file;
1920 case AGGR_GLOBAL:
1921 return perf_stat__get_global_file;
1922 case AGGR_NONE:
1923 return perf_stat__get_cpu_file;
1924 case AGGR_THREAD:
1925 case AGGR_UNSET:
1926 case AGGR_MAX:
1927 default:
1928 return NULL;
1929 }
1930}
1931
1932static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1933{
1934 struct perf_env *env = &st->session->header.env;
1935 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
1936 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1937
1938 if (stat_config.aggr_mode == AGGR_THREAD) {
1939 int nr = perf_thread_map__nr(evsel_list->core.threads);
1940
1941 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1942 if (stat_config.aggr_map == NULL)
1943 return -ENOMEM;
1944
1945 for (int s = 0; s < nr; s++) {
1946 struct aggr_cpu_id id = aggr_cpu_id__empty();
1947
1948 id.thread_idx = s;
1949 stat_config.aggr_map->map[s] = id;
1950 }
1951 return 0;
1952 }
1953
1954 if (!get_id)
1955 return 0;
1956
1957 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1958 get_id, env, needs_sort);
1959 if (!stat_config.aggr_map) {
1960 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1961 return -1;
1962 }
1963 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
1964 return 0;
1965}
1966
1967/*
1968 * Add default attributes, if there were no attributes specified or
1969 * if -d/--detailed, -d -d or -d -d -d is used:
1970 */
1971static int add_default_attributes(void)
1972{
1973 struct perf_event_attr default_attrs0[] = {
1974
1975 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1976 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1977 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1978 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1979
1980 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1981};
1982 struct perf_event_attr frontend_attrs[] = {
1983 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1984};
1985 struct perf_event_attr backend_attrs[] = {
1986 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1987};
1988 struct perf_event_attr default_attrs1[] = {
1989 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1990 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1991 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1992
1993};
1994
1995/*
1996 * Detailed stats (-d), covering the L1 and last level data caches:
1997 */
1998 struct perf_event_attr detailed_attrs[] = {
1999
2000 { .type = PERF_TYPE_HW_CACHE,
2001 .config =
2002 PERF_COUNT_HW_CACHE_L1D << 0 |
2003 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2004 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2005
2006 { .type = PERF_TYPE_HW_CACHE,
2007 .config =
2008 PERF_COUNT_HW_CACHE_L1D << 0 |
2009 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2010 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2011
2012 { .type = PERF_TYPE_HW_CACHE,
2013 .config =
2014 PERF_COUNT_HW_CACHE_LL << 0 |
2015 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2016 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2017
2018 { .type = PERF_TYPE_HW_CACHE,
2019 .config =
2020 PERF_COUNT_HW_CACHE_LL << 0 |
2021 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2022 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2023};
2024
2025/*
2026 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
2027 */
2028 struct perf_event_attr very_detailed_attrs[] = {
2029
2030 { .type = PERF_TYPE_HW_CACHE,
2031 .config =
2032 PERF_COUNT_HW_CACHE_L1I << 0 |
2033 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2034 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2035
2036 { .type = PERF_TYPE_HW_CACHE,
2037 .config =
2038 PERF_COUNT_HW_CACHE_L1I << 0 |
2039 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2040 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2041
2042 { .type = PERF_TYPE_HW_CACHE,
2043 .config =
2044 PERF_COUNT_HW_CACHE_DTLB << 0 |
2045 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2046 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2047
2048 { .type = PERF_TYPE_HW_CACHE,
2049 .config =
2050 PERF_COUNT_HW_CACHE_DTLB << 0 |
2051 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2052 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2053
2054 { .type = PERF_TYPE_HW_CACHE,
2055 .config =
2056 PERF_COUNT_HW_CACHE_ITLB << 0 |
2057 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2058 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2059
2060 { .type = PERF_TYPE_HW_CACHE,
2061 .config =
2062 PERF_COUNT_HW_CACHE_ITLB << 0 |
2063 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2064 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2065
2066};
2067
2068/*
2069 * Very, very detailed stats (-d -d -d), adding prefetch events:
2070 */
2071 struct perf_event_attr very_very_detailed_attrs[] = {
2072
2073 { .type = PERF_TYPE_HW_CACHE,
2074 .config =
2075 PERF_COUNT_HW_CACHE_L1D << 0 |
2076 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2077 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2078
2079 { .type = PERF_TYPE_HW_CACHE,
2080 .config =
2081 PERF_COUNT_HW_CACHE_L1D << 0 |
2082 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2083 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2084};
2085
2086 struct perf_event_attr default_null_attrs[] = {};
2087 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
2088
2089 /* Set attrs if no event is selected and !null_run: */
2090 if (stat_config.null_run)
2091 return 0;
2092
2093 if (transaction_run) {
2094 /* Handle -T as -M transaction. Once platform specific metrics
2095 * support has been added to the json files, all architectures
2096 * will use this approach. To determine transaction support
2097 * on an architecture test for such a metric name.
2098 */
2099 if (!metricgroup__has_metric(pmu, "transaction")) {
2100 pr_err("Missing transaction metrics\n");
2101 return -1;
2102 }
2103 return metricgroup__parse_groups(evsel_list, pmu, "transaction",
2104 stat_config.metric_no_group,
2105 stat_config.metric_no_merge,
2106 stat_config.metric_no_threshold,
2107 stat_config.user_requested_cpu_list,
2108 stat_config.system_wide,
2109 &stat_config.metric_events);
2110 }
2111
2112 if (smi_cost) {
2113 int smi;
2114
2115 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
2116 pr_err("freeze_on_smi is not supported.\n");
2117 return -1;
2118 }
2119
2120 if (!smi) {
2121 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
2122 fprintf(stderr, "Failed to set freeze_on_smi.\n");
2123 return -1;
2124 }
2125 smi_reset = true;
2126 }
2127
2128 if (!metricgroup__has_metric(pmu, "smi")) {
2129 pr_err("Missing smi metrics\n");
2130 return -1;
2131 }
2132
2133 if (!force_metric_only)
2134 stat_config.metric_only = true;
2135
2136 return metricgroup__parse_groups(evsel_list, pmu, "smi",
2137 stat_config.metric_no_group,
2138 stat_config.metric_no_merge,
2139 stat_config.metric_no_threshold,
2140 stat_config.user_requested_cpu_list,
2141 stat_config.system_wide,
2142 &stat_config.metric_events);
2143 }
2144
2145 if (topdown_run) {
2146 unsigned int max_level = metricgroups__topdown_max_level();
2147 char str[] = "TopdownL1";
2148
2149 if (!force_metric_only)
2150 stat_config.metric_only = true;
2151
2152 if (!max_level) {
2153 pr_err("Topdown requested but the topdown metric groups aren't present.\n"
2154 "(See perf list the metric groups have names like TopdownL1)\n");
2155 return -1;
2156 }
2157 if (stat_config.topdown_level > max_level) {
2158 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
2159 return -1;
2160 } else if (!stat_config.topdown_level)
2161 stat_config.topdown_level = 1;
2162
2163 if (!stat_config.interval && !stat_config.metric_only) {
2164 fprintf(stat_config.output,
2165 "Topdown accuracy may decrease when measuring long periods.\n"
2166 "Please print the result regularly, e.g. -I1000\n");
2167 }
2168 str[8] = stat_config.topdown_level + '0';
2169 if (metricgroup__parse_groups(evsel_list,
2170 pmu, str,
2171 /*metric_no_group=*/false,
2172 /*metric_no_merge=*/false,
2173 /*metric_no_threshold=*/true,
2174 stat_config.user_requested_cpu_list,
2175 stat_config.system_wide,
2176 &stat_config.metric_events) < 0)
2177 return -1;
2178 }
2179
2180 if (!stat_config.topdown_level)
2181 stat_config.topdown_level = 1;
2182
2183 if (!evsel_list->core.nr_entries) {
2184 /* No events so add defaults. */
2185 if (target__has_cpu(&target))
2186 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
2187
2188 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2189 return -1;
2190 if (perf_pmus__have_event("cpu", "stalled-cycles-frontend")) {
2191 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
2192 return -1;
2193 }
2194 if (perf_pmus__have_event("cpu", "stalled-cycles-backend")) {
2195 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)
2196 return -1;
2197 }
2198 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2199 return -1;
2200 /*
2201 * Add TopdownL1 metrics if they exist. To minimize
2202 * multiplexing, don't request threshold computation.
2203 */
2204 if (metricgroup__has_metric(pmu, "Default")) {
2205 struct evlist *metric_evlist = evlist__new();
2206 struct evsel *metric_evsel;
2207
2208 if (!metric_evlist)
2209 return -1;
2210
2211 if (metricgroup__parse_groups(metric_evlist, pmu, "Default",
2212 /*metric_no_group=*/false,
2213 /*metric_no_merge=*/false,
2214 /*metric_no_threshold=*/true,
2215 stat_config.user_requested_cpu_list,
2216 stat_config.system_wide,
2217 &stat_config.metric_events) < 0)
2218 return -1;
2219
2220 evlist__for_each_entry(metric_evlist, metric_evsel) {
2221 metric_evsel->skippable = true;
2222 metric_evsel->default_metricgroup = true;
2223 }
2224 evlist__splice_list_tail(evsel_list, &metric_evlist->core.entries);
2225 evlist__delete(metric_evlist);
2226 }
2227
2228 /* Platform specific attrs */
2229 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0)
2230 return -1;
2231 }
2232
2233 /* Detailed events get appended to the event list: */
2234
2235 if (detailed_run < 1)
2236 return 0;
2237
2238 /* Append detailed run extra attributes: */
2239 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2240 return -1;
2241
2242 if (detailed_run < 2)
2243 return 0;
2244
2245 /* Append very detailed run extra attributes: */
2246 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2247 return -1;
2248
2249 if (detailed_run < 3)
2250 return 0;
2251
2252 /* Append very, very detailed run extra attributes: */
2253 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2254}
2255
2256static const char * const stat_record_usage[] = {
2257 "perf stat record [<options>]",
2258 NULL,
2259};
2260
2261static void init_features(struct perf_session *session)
2262{
2263 int feat;
2264
2265 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2266 perf_header__set_feat(&session->header, feat);
2267
2268 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
2269 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2270 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2271 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2272 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2273}
2274
2275static int __cmd_record(int argc, const char **argv)
2276{
2277 struct perf_session *session;
2278 struct perf_data *data = &perf_stat.data;
2279
2280 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2281 PARSE_OPT_STOP_AT_NON_OPTION);
2282
2283 if (output_name)
2284 data->path = output_name;
2285
2286 if (stat_config.run_count != 1 || forever) {
2287 pr_err("Cannot use -r option with perf stat record.\n");
2288 return -1;
2289 }
2290
2291 session = perf_session__new(data, NULL);
2292 if (IS_ERR(session)) {
2293 pr_err("Perf session creation failed\n");
2294 return PTR_ERR(session);
2295 }
2296
2297 init_features(session);
2298
2299 session->evlist = evsel_list;
2300 perf_stat.session = session;
2301 perf_stat.record = true;
2302 return argc;
2303}
2304
2305static int process_stat_round_event(struct perf_session *session,
2306 union perf_event *event)
2307{
2308 struct perf_record_stat_round *stat_round = &event->stat_round;
2309 struct timespec tsh, *ts = NULL;
2310 const char **argv = session->header.env.cmdline_argv;
2311 int argc = session->header.env.nr_cmdline;
2312
2313 process_counters();
2314
2315 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2316 update_stats(&walltime_nsecs_stats, stat_round->time);
2317
2318 if (stat_config.interval && stat_round->time) {
2319 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2320 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2321 ts = &tsh;
2322 }
2323
2324 print_counters(ts, argc, argv);
2325 return 0;
2326}
2327
2328static
2329int process_stat_config_event(struct perf_session *session,
2330 union perf_event *event)
2331{
2332 struct perf_tool *tool = session->tool;
2333 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2334
2335 perf_event__read_stat_config(&stat_config, &event->stat_config);
2336
2337 if (perf_cpu_map__has_any_cpu_or_is_empty(st->cpus)) {
2338 if (st->aggr_mode != AGGR_UNSET)
2339 pr_warning("warning: processing task data, aggregation mode not set\n");
2340 } else if (st->aggr_mode != AGGR_UNSET) {
2341 stat_config.aggr_mode = st->aggr_mode;
2342 }
2343
2344 if (perf_stat.data.is_pipe)
2345 perf_stat_init_aggr_mode();
2346 else
2347 perf_stat_init_aggr_mode_file(st);
2348
2349 if (stat_config.aggr_map) {
2350 int nr_aggr = stat_config.aggr_map->nr;
2351
2352 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
2353 pr_err("cannot allocate aggr counts\n");
2354 return -1;
2355 }
2356 }
2357 return 0;
2358}
2359
2360static int set_maps(struct perf_stat *st)
2361{
2362 if (!st->cpus || !st->threads)
2363 return 0;
2364
2365 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2366 return -EINVAL;
2367
2368 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2369
2370 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))
2371 return -ENOMEM;
2372
2373 st->maps_allocated = true;
2374 return 0;
2375}
2376
2377static
2378int process_thread_map_event(struct perf_session *session,
2379 union perf_event *event)
2380{
2381 struct perf_tool *tool = session->tool;
2382 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2383
2384 if (st->threads) {
2385 pr_warning("Extra thread map event, ignoring.\n");
2386 return 0;
2387 }
2388
2389 st->threads = thread_map__new_event(&event->thread_map);
2390 if (!st->threads)
2391 return -ENOMEM;
2392
2393 return set_maps(st);
2394}
2395
2396static
2397int process_cpu_map_event(struct perf_session *session,
2398 union perf_event *event)
2399{
2400 struct perf_tool *tool = session->tool;
2401 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2402 struct perf_cpu_map *cpus;
2403
2404 if (st->cpus) {
2405 pr_warning("Extra cpu map event, ignoring.\n");
2406 return 0;
2407 }
2408
2409 cpus = cpu_map__new_data(&event->cpu_map.data);
2410 if (!cpus)
2411 return -ENOMEM;
2412
2413 st->cpus = cpus;
2414 return set_maps(st);
2415}
2416
2417static const char * const stat_report_usage[] = {
2418 "perf stat report [<options>]",
2419 NULL,
2420};
2421
2422static struct perf_stat perf_stat = {
2423 .tool = {
2424 .attr = perf_event__process_attr,
2425 .event_update = perf_event__process_event_update,
2426 .thread_map = process_thread_map_event,
2427 .cpu_map = process_cpu_map_event,
2428 .stat_config = process_stat_config_event,
2429 .stat = perf_event__process_stat_event,
2430 .stat_round = process_stat_round_event,
2431 },
2432 .aggr_mode = AGGR_UNSET,
2433 .aggr_level = 0,
2434};
2435
2436static int __cmd_report(int argc, const char **argv)
2437{
2438 struct perf_session *session;
2439 const struct option options[] = {
2440 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2441 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2442 "aggregate counts per processor socket", AGGR_SOCKET),
2443 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2444 "aggregate counts per processor die", AGGR_DIE),
2445 OPT_SET_UINT(0, "per-cluster", &perf_stat.aggr_mode,
2446 "aggregate counts perf processor cluster", AGGR_CLUSTER),
2447 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level,
2448 "cache level",
2449 "aggregate count at this cache level (Default: LLC)",
2450 parse_cache_level),
2451 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2452 "aggregate counts per physical processor core", AGGR_CORE),
2453 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2454 "aggregate counts per numa node", AGGR_NODE),
2455 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2456 "disable CPU count aggregation", AGGR_NONE),
2457 OPT_END()
2458 };
2459 struct stat st;
2460 int ret;
2461
2462 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2463
2464 if (!input_name || !strlen(input_name)) {
2465 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2466 input_name = "-";
2467 else
2468 input_name = "perf.data";
2469 }
2470
2471 perf_stat.data.path = input_name;
2472 perf_stat.data.mode = PERF_DATA_MODE_READ;
2473
2474 session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2475 if (IS_ERR(session))
2476 return PTR_ERR(session);
2477
2478 perf_stat.session = session;
2479 stat_config.output = stderr;
2480 evlist__delete(evsel_list);
2481 evsel_list = session->evlist;
2482
2483 ret = perf_session__process_events(session);
2484 if (ret)
2485 return ret;
2486
2487 perf_session__delete(session);
2488 return 0;
2489}
2490
2491static void setup_system_wide(int forks)
2492{
2493 /*
2494 * Make system wide (-a) the default target if
2495 * no target was specified and one of following
2496 * conditions is met:
2497 *
2498 * - there's no workload specified
2499 * - there is workload specified but all requested
2500 * events are system wide events
2501 */
2502 if (!target__none(&target))
2503 return;
2504
2505 if (!forks)
2506 target.system_wide = true;
2507 else {
2508 struct evsel *counter;
2509
2510 evlist__for_each_entry(evsel_list, counter) {
2511 if (!counter->core.requires_cpu &&
2512 !evsel__name_is(counter, "duration_time")) {
2513 return;
2514 }
2515 }
2516
2517 if (evsel_list->core.nr_entries)
2518 target.system_wide = true;
2519 }
2520}
2521
2522int cmd_stat(int argc, const char **argv)
2523{
2524 const char * const stat_usage[] = {
2525 "perf stat [<options>] [<command>]",
2526 NULL
2527 };
2528 int status = -EINVAL, run_idx, err;
2529 const char *mode;
2530 FILE *output = stderr;
2531 unsigned int interval, timeout;
2532 const char * const stat_subcommands[] = { "record", "report" };
2533 char errbuf[BUFSIZ];
2534
2535 setlocale(LC_ALL, "");
2536
2537 evsel_list = evlist__new();
2538 if (evsel_list == NULL)
2539 return -ENOMEM;
2540
2541 parse_events__shrink_config_terms();
2542
2543 /* String-parsing callback-based options would segfault when negated */
2544 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2545 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2546 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2547
2548 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2549 (const char **) stat_usage,
2550 PARSE_OPT_STOP_AT_NON_OPTION);
2551
2552 if (stat_config.csv_sep) {
2553 stat_config.csv_output = true;
2554 if (!strcmp(stat_config.csv_sep, "\\t"))
2555 stat_config.csv_sep = "\t";
2556 } else
2557 stat_config.csv_sep = DEFAULT_SEPARATOR;
2558
2559 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
2560 argc = __cmd_record(argc, argv);
2561 if (argc < 0)
2562 return -1;
2563 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
2564 return __cmd_report(argc, argv);
2565
2566 interval = stat_config.interval;
2567 timeout = stat_config.timeout;
2568
2569 /*
2570 * For record command the -o is already taken care of.
2571 */
2572 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2573 output = NULL;
2574
2575 if (output_name && output_fd) {
2576 fprintf(stderr, "cannot use both --output and --log-fd\n");
2577 parse_options_usage(stat_usage, stat_options, "o", 1);
2578 parse_options_usage(NULL, stat_options, "log-fd", 0);
2579 goto out;
2580 }
2581
2582 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2583 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2584 goto out;
2585 }
2586
2587 if (stat_config.metric_only && stat_config.run_count > 1) {
2588 fprintf(stderr, "--metric-only is not supported with -r\n");
2589 goto out;
2590 }
2591
2592 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2593 fprintf(stderr, "--table is only supported with -r\n");
2594 parse_options_usage(stat_usage, stat_options, "r", 1);
2595 parse_options_usage(NULL, stat_options, "table", 0);
2596 goto out;
2597 }
2598
2599 if (output_fd < 0) {
2600 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2601 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2602 goto out;
2603 }
2604
2605 if (!output && !quiet) {
2606 struct timespec tm;
2607 mode = append_file ? "a" : "w";
2608
2609 output = fopen(output_name, mode);
2610 if (!output) {
2611 perror("failed to create output file");
2612 return -1;
2613 }
2614 if (!stat_config.json_output) {
2615 clock_gettime(CLOCK_REALTIME, &tm);
2616 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2617 }
2618 } else if (output_fd > 0) {
2619 mode = append_file ? "a" : "w";
2620 output = fdopen(output_fd, mode);
2621 if (!output) {
2622 perror("Failed opening logfd");
2623 return -errno;
2624 }
2625 }
2626
2627 if (stat_config.interval_clear && !isatty(fileno(output))) {
2628 fprintf(stderr, "--interval-clear does not work with output\n");
2629 parse_options_usage(stat_usage, stat_options, "o", 1);
2630 parse_options_usage(NULL, stat_options, "log-fd", 0);
2631 parse_options_usage(NULL, stat_options, "interval-clear", 0);
2632 return -1;
2633 }
2634
2635 stat_config.output = output;
2636
2637 /*
2638 * let the spreadsheet do the pretty-printing
2639 */
2640 if (stat_config.csv_output) {
2641 /* User explicitly passed -B? */
2642 if (big_num_opt == 1) {
2643 fprintf(stderr, "-B option not supported with -x\n");
2644 parse_options_usage(stat_usage, stat_options, "B", 1);
2645 parse_options_usage(NULL, stat_options, "x", 1);
2646 goto out;
2647 } else /* Nope, so disable big number formatting */
2648 stat_config.big_num = false;
2649 } else if (big_num_opt == 0) /* User passed --no-big-num */
2650 stat_config.big_num = false;
2651
2652 err = target__validate(&target);
2653 if (err) {
2654 target__strerror(&target, err, errbuf, BUFSIZ);
2655 pr_warning("%s\n", errbuf);
2656 }
2657
2658 setup_system_wide(argc);
2659
2660 /*
2661 * Display user/system times only for single
2662 * run and when there's specified tracee.
2663 */
2664 if ((stat_config.run_count == 1) && target__none(&target))
2665 stat_config.ru_display = true;
2666
2667 if (stat_config.run_count < 0) {
2668 pr_err("Run count must be a positive number\n");
2669 parse_options_usage(stat_usage, stat_options, "r", 1);
2670 goto out;
2671 } else if (stat_config.run_count == 0) {
2672 forever = true;
2673 stat_config.run_count = 1;
2674 }
2675
2676 if (stat_config.walltime_run_table) {
2677 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2678 if (!stat_config.walltime_run) {
2679 pr_err("failed to setup -r option");
2680 goto out;
2681 }
2682 }
2683
2684 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2685 !target__has_task(&target)) {
2686 if (!target.system_wide || target.cpu_list) {
2687 fprintf(stderr, "The --per-thread option is only "
2688 "available when monitoring via -p -t -a "
2689 "options or only --per-thread.\n");
2690 parse_options_usage(NULL, stat_options, "p", 1);
2691 parse_options_usage(NULL, stat_options, "t", 1);
2692 goto out;
2693 }
2694 }
2695
2696 /*
2697 * no_aggr, cgroup are for system-wide only
2698 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2699 */
2700 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2701 stat_config.aggr_mode != AGGR_THREAD) ||
2702 (nr_cgroups || stat_config.cgroup_list)) &&
2703 !target__has_cpu(&target)) {
2704 fprintf(stderr, "both cgroup and no-aggregation "
2705 "modes only available in system-wide mode\n");
2706
2707 parse_options_usage(stat_usage, stat_options, "G", 1);
2708 parse_options_usage(NULL, stat_options, "A", 1);
2709 parse_options_usage(NULL, stat_options, "a", 1);
2710 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2711 goto out;
2712 }
2713
2714 if (stat_config.iostat_run) {
2715 status = iostat_prepare(evsel_list, &stat_config);
2716 if (status)
2717 goto out;
2718 if (iostat_mode == IOSTAT_LIST) {
2719 iostat_list(evsel_list, &stat_config);
2720 goto out;
2721 } else if (verbose > 0)
2722 iostat_list(evsel_list, &stat_config);
2723 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2724 target.system_wide = true;
2725 }
2726
2727 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2728 target.per_thread = true;
2729
2730 stat_config.system_wide = target.system_wide;
2731 if (target.cpu_list) {
2732 stat_config.user_requested_cpu_list = strdup(target.cpu_list);
2733 if (!stat_config.user_requested_cpu_list) {
2734 status = -ENOMEM;
2735 goto out;
2736 }
2737 }
2738
2739 /*
2740 * Metric parsing needs to be delayed as metrics may optimize events
2741 * knowing the target is system-wide.
2742 */
2743 if (metrics) {
2744 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
2745 int ret = metricgroup__parse_groups(evsel_list, pmu, metrics,
2746 stat_config.metric_no_group,
2747 stat_config.metric_no_merge,
2748 stat_config.metric_no_threshold,
2749 stat_config.user_requested_cpu_list,
2750 stat_config.system_wide,
2751 &stat_config.metric_events);
2752
2753 zfree(&metrics);
2754 if (ret) {
2755 status = ret;
2756 goto out;
2757 }
2758 }
2759
2760 if (add_default_attributes())
2761 goto out;
2762
2763 if (stat_config.cgroup_list) {
2764 if (nr_cgroups > 0) {
2765 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2766 parse_options_usage(stat_usage, stat_options, "G", 1);
2767 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2768 goto out;
2769 }
2770
2771 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2772 &stat_config.metric_events, true) < 0) {
2773 parse_options_usage(stat_usage, stat_options,
2774 "for-each-cgroup", 0);
2775 goto out;
2776 }
2777 }
2778
2779 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list);
2780
2781 if (evlist__create_maps(evsel_list, &target) < 0) {
2782 if (target__has_task(&target)) {
2783 pr_err("Problems finding threads of monitor\n");
2784 parse_options_usage(stat_usage, stat_options, "p", 1);
2785 parse_options_usage(NULL, stat_options, "t", 1);
2786 } else if (target__has_cpu(&target)) {
2787 perror("failed to parse CPUs map");
2788 parse_options_usage(stat_usage, stat_options, "C", 1);
2789 parse_options_usage(NULL, stat_options, "a", 1);
2790 }
2791 goto out;
2792 }
2793
2794 evlist__check_cpu_maps(evsel_list);
2795
2796 /*
2797 * Initialize thread_map with comm names,
2798 * so we could print it out on output.
2799 */
2800 if (stat_config.aggr_mode == AGGR_THREAD) {
2801 thread_map__read_comms(evsel_list->core.threads);
2802 }
2803
2804 if (stat_config.aggr_mode == AGGR_NODE)
2805 cpu__setup_cpunode_map();
2806
2807 if (stat_config.times && interval)
2808 interval_count = true;
2809 else if (stat_config.times && !interval) {
2810 pr_err("interval-count option should be used together with "
2811 "interval-print.\n");
2812 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2813 parse_options_usage(stat_usage, stat_options, "I", 1);
2814 goto out;
2815 }
2816
2817 if (timeout && timeout < 100) {
2818 if (timeout < 10) {
2819 pr_err("timeout must be >= 10ms.\n");
2820 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2821 goto out;
2822 } else
2823 pr_warning("timeout < 100ms. "
2824 "The overhead percentage could be high in some cases. "
2825 "Please proceed with caution.\n");
2826 }
2827 if (timeout && interval) {
2828 pr_err("timeout option is not supported with interval-print.\n");
2829 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2830 parse_options_usage(stat_usage, stat_options, "I", 1);
2831 goto out;
2832 }
2833
2834 if (perf_stat_init_aggr_mode())
2835 goto out;
2836
2837 if (evlist__alloc_stats(&stat_config, evsel_list, interval))
2838 goto out;
2839
2840 /*
2841 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2842 * while avoiding that older tools show confusing messages.
2843 *
2844 * However for pipe sessions we need to keep it zero,
2845 * because script's perf_evsel__check_attr is triggered
2846 * by attr->sample_type != 0, and we can't run it on
2847 * stat sessions.
2848 */
2849 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2850
2851 /*
2852 * We dont want to block the signals - that would cause
2853 * child tasks to inherit that and Ctrl-C would not work.
2854 * What we want is for Ctrl-C to work in the exec()-ed
2855 * task, but being ignored by perf stat itself:
2856 */
2857 atexit(sig_atexit);
2858 if (!forever)
2859 signal(SIGINT, skip_signal);
2860 signal(SIGCHLD, skip_signal);
2861 signal(SIGALRM, skip_signal);
2862 signal(SIGABRT, skip_signal);
2863
2864 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2865 goto out;
2866
2867 /* Enable ignoring missing threads when -p option is defined. */
2868 evlist__first(evsel_list)->ignore_missing_thread = target.pid;
2869 status = 0;
2870 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2871 if (stat_config.run_count != 1 && verbose > 0)
2872 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2873 run_idx + 1);
2874
2875 if (run_idx != 0)
2876 evlist__reset_prev_raw_counts(evsel_list);
2877
2878 status = run_perf_stat(argc, argv, run_idx);
2879 if (forever && status != -1 && !interval) {
2880 print_counters(NULL, argc, argv);
2881 perf_stat__reset_stats();
2882 }
2883 }
2884
2885 if (!forever && status != -1 && (!interval || stat_config.summary)) {
2886 if (stat_config.run_count > 1)
2887 evlist__copy_res_stats(&stat_config, evsel_list);
2888 print_counters(NULL, argc, argv);
2889 }
2890
2891 evlist__finalize_ctlfd(evsel_list);
2892
2893 if (STAT_RECORD) {
2894 /*
2895 * We synthesize the kernel mmap record just so that older tools
2896 * don't emit warnings about not being able to resolve symbols
2897 * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2898 * a saner message about no samples being in the perf.data file.
2899 *
2900 * This also serves to suppress a warning about f_header.data.size == 0
2901 * in header.c at the moment 'perf stat record' gets introduced, which
2902 * is not really needed once we start adding the stat specific PERF_RECORD_
2903 * records, but the need to suppress the kptr_restrict messages in older
2904 * tools remain -acme
2905 */
2906 int fd = perf_data__fd(&perf_stat.data);
2907
2908 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2909 process_synthesized_event,
2910 &perf_stat.session->machines.host);
2911 if (err) {
2912 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2913 "older tools may produce warnings about this file\n.");
2914 }
2915
2916 if (!interval) {
2917 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2918 pr_err("failed to write stat round event\n");
2919 }
2920
2921 if (!perf_stat.data.is_pipe) {
2922 perf_stat.session->header.data_size += perf_stat.bytes_written;
2923 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2924 }
2925
2926 evlist__close(evsel_list);
2927 perf_session__delete(perf_stat.session);
2928 }
2929
2930 perf_stat__exit_aggr_mode();
2931 evlist__free_stats(evsel_list);
2932out:
2933 if (stat_config.iostat_run)
2934 iostat_release(evsel_list);
2935
2936 zfree(&stat_config.walltime_run);
2937 zfree(&stat_config.user_requested_cpu_list);
2938
2939 if (smi_cost && smi_reset)
2940 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2941
2942 evlist__delete(evsel_list);
2943
2944 metricgroup__rblist_exit(&stat_config.metric_events);
2945 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2946
2947 return status;
2948}
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/string2.h"
67#include "util/metricgroup.h"
68#include "asm/bug.h"
69
70#include <linux/time64.h>
71#include <api/fs/fs.h>
72#include <errno.h>
73#include <signal.h>
74#include <stdlib.h>
75#include <sys/prctl.h>
76#include <inttypes.h>
77#include <locale.h>
78#include <math.h>
79#include <sys/types.h>
80#include <sys/stat.h>
81#include <sys/wait.h>
82#include <unistd.h>
83
84#include "sane_ctype.h"
85
86#define DEFAULT_SEPARATOR " "
87#define CNTR_NOT_SUPPORTED "<not supported>"
88#define CNTR_NOT_COUNTED "<not counted>"
89#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
90
91static void print_counters(struct timespec *ts, int argc, const char **argv);
92
93/* Default events used for perf stat -T */
94static const char *transaction_attrs = {
95 "task-clock,"
96 "{"
97 "instructions,"
98 "cycles,"
99 "cpu/cycles-t/,"
100 "cpu/tx-start/,"
101 "cpu/el-start/,"
102 "cpu/cycles-ct/"
103 "}"
104};
105
106/* More limited version when the CPU does not have all events. */
107static const char * transaction_limited_attrs = {
108 "task-clock,"
109 "{"
110 "instructions,"
111 "cycles,"
112 "cpu/cycles-t/,"
113 "cpu/tx-start/"
114 "}"
115};
116
117static const char * topdown_attrs[] = {
118 "topdown-total-slots",
119 "topdown-slots-retired",
120 "topdown-recovery-bubbles",
121 "topdown-fetch-bubbles",
122 "topdown-slots-issued",
123 NULL,
124};
125
126static const char *smi_cost_attrs = {
127 "{"
128 "msr/aperf/,"
129 "msr/smi/,"
130 "cycles"
131 "}"
132};
133
134static struct perf_evlist *evsel_list;
135
136static struct rblist metric_events;
137
138static struct target target = {
139 .uid = UINT_MAX,
140};
141
142typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
143
144static int run_count = 1;
145static bool no_inherit = false;
146static volatile pid_t child_pid = -1;
147static bool null_run = false;
148static int detailed_run = 0;
149static bool transaction_run;
150static bool topdown_run = false;
151static bool smi_cost = false;
152static bool smi_reset = false;
153static bool big_num = true;
154static int big_num_opt = -1;
155static const char *csv_sep = NULL;
156static bool csv_output = false;
157static bool group = false;
158static const char *pre_cmd = NULL;
159static const char *post_cmd = NULL;
160static bool sync_run = false;
161static unsigned int initial_delay = 0;
162static unsigned int unit_width = 4; /* strlen("unit") */
163static bool forever = false;
164static bool metric_only = false;
165static bool force_metric_only = false;
166static bool no_merge = false;
167static struct timespec ref_time;
168static struct cpu_map *aggr_map;
169static aggr_get_id_t aggr_get_id;
170static bool append_file;
171static bool interval_count;
172static const char *output_name;
173static int output_fd;
174static int print_free_counters_hint;
175static int print_mixed_hw_group_error;
176
177struct perf_stat {
178 bool record;
179 struct perf_data data;
180 struct perf_session *session;
181 u64 bytes_written;
182 struct perf_tool tool;
183 bool maps_allocated;
184 struct cpu_map *cpus;
185 struct thread_map *threads;
186 enum aggr_mode aggr_mode;
187};
188
189static struct perf_stat perf_stat;
190#define STAT_RECORD perf_stat.record
191
192static volatile int done = 0;
193
194static struct perf_stat_config stat_config = {
195 .aggr_mode = AGGR_GLOBAL,
196 .scale = true,
197};
198
199static bool is_duration_time(struct perf_evsel *evsel)
200{
201 return !strcmp(evsel->name, "duration_time");
202}
203
204static inline void diff_timespec(struct timespec *r, struct timespec *a,
205 struct timespec *b)
206{
207 r->tv_sec = a->tv_sec - b->tv_sec;
208 if (a->tv_nsec < b->tv_nsec) {
209 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
210 r->tv_sec--;
211 } else {
212 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
213 }
214}
215
216static void perf_stat__reset_stats(void)
217{
218 int i;
219
220 perf_evlist__reset_stats(evsel_list);
221 perf_stat__reset_shadow_stats();
222
223 for (i = 0; i < stat_config.stats_num; i++)
224 perf_stat__reset_shadow_per_stat(&stat_config.stats[i]);
225}
226
227static int create_perf_stat_counter(struct perf_evsel *evsel)
228{
229 struct perf_event_attr *attr = &evsel->attr;
230 struct perf_evsel *leader = evsel->leader;
231
232 if (stat_config.scale) {
233 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
234 PERF_FORMAT_TOTAL_TIME_RUNNING;
235 }
236
237 /*
238 * The event is part of non trivial group, let's enable
239 * the group read (for leader) and ID retrieval for all
240 * members.
241 */
242 if (leader->nr_members > 1)
243 attr->read_format |= PERF_FORMAT_ID|PERF_FORMAT_GROUP;
244
245 attr->inherit = !no_inherit;
246
247 /*
248 * Some events get initialized with sample_(period/type) set,
249 * like tracepoints. Clear it up for counting.
250 */
251 attr->sample_period = 0;
252
253 /*
254 * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
255 * while avoiding that older tools show confusing messages.
256 *
257 * However for pipe sessions we need to keep it zero,
258 * because script's perf_evsel__check_attr is triggered
259 * by attr->sample_type != 0, and we can't run it on
260 * stat sessions.
261 */
262 if (!(STAT_RECORD && perf_stat.data.is_pipe))
263 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
264
265 /*
266 * Disabling all counters initially, they will be enabled
267 * either manually by us or by kernel via enable_on_exec
268 * set later.
269 */
270 if (perf_evsel__is_group_leader(evsel)) {
271 attr->disabled = 1;
272
273 /*
274 * In case of initial_delay we enable tracee
275 * events manually.
276 */
277 if (target__none(&target) && !initial_delay)
278 attr->enable_on_exec = 1;
279 }
280
281 if (target__has_cpu(&target) && !target__has_per_thread(&target))
282 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
283
284 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
285}
286
287/*
288 * Does the counter have nsecs as a unit?
289 */
290static inline int nsec_counter(struct perf_evsel *evsel)
291{
292 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
293 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
294 return 1;
295
296 return 0;
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->sample_id, x, y)
324
325static int
326perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
327 struct perf_counts_values *count)
328{
329 struct perf_sample_id *sid = SID(counter, cpu, thread);
330
331 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
332 process_synthesized_event, NULL);
333}
334
335/*
336 * Read out the results of a single counter:
337 * do not aggregate counts across CPUs in system-wide mode
338 */
339static int read_counter(struct perf_evsel *counter)
340{
341 int nthreads = thread_map__nr(evsel_list->threads);
342 int ncpus, cpu, thread;
343
344 if (target__has_cpu(&target) && !target__has_per_thread(&target))
345 ncpus = perf_evsel__nr_cpus(counter);
346 else
347 ncpus = 1;
348
349 if (!counter->supported)
350 return -ENOENT;
351
352 if (counter->system_wide)
353 nthreads = 1;
354
355 for (thread = 0; thread < nthreads; thread++) {
356 for (cpu = 0; cpu < ncpus; cpu++) {
357 struct perf_counts_values *count;
358
359 count = perf_counts(counter->counts, cpu, thread);
360
361 /*
362 * The leader's group read loads data into its group members
363 * (via perf_evsel__read_counter) and sets threir count->loaded.
364 */
365 if (!count->loaded &&
366 perf_evsel__read_counter(counter, cpu, thread)) {
367 counter->counts->scaled = -1;
368 perf_counts(counter->counts, cpu, thread)->ena = 0;
369 perf_counts(counter->counts, cpu, thread)->run = 0;
370 return -1;
371 }
372
373 count->loaded = false;
374
375 if (STAT_RECORD) {
376 if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
377 pr_err("failed to write stat event\n");
378 return -1;
379 }
380 }
381
382 if (verbose > 1) {
383 fprintf(stat_config.output,
384 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
385 perf_evsel__name(counter),
386 cpu,
387 count->val, count->ena, count->run);
388 }
389 }
390 }
391
392 return 0;
393}
394
395static void read_counters(void)
396{
397 struct perf_evsel *counter;
398 int ret;
399
400 evlist__for_each_entry(evsel_list, counter) {
401 ret = read_counter(counter);
402 if (ret)
403 pr_debug("failed to read counter %s\n", counter->name);
404
405 if (ret == 0 && perf_stat_process_counter(&stat_config, counter))
406 pr_warning("failed to process counter %s\n", counter->name);
407 }
408}
409
410static void process_interval(void)
411{
412 struct timespec ts, rs;
413
414 read_counters();
415
416 clock_gettime(CLOCK_MONOTONIC, &ts);
417 diff_timespec(&rs, &ts, &ref_time);
418
419 if (STAT_RECORD) {
420 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
421 pr_err("failed to write stat round event\n");
422 }
423
424 init_stats(&walltime_nsecs_stats);
425 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000);
426 print_counters(&rs, 0, NULL);
427}
428
429static void enable_counters(void)
430{
431 if (initial_delay)
432 usleep(initial_delay * USEC_PER_MSEC);
433
434 /*
435 * We need to enable counters only if:
436 * - we don't have tracee (attaching to task or cpu)
437 * - we have initial delay configured
438 */
439 if (!target__none(&target) || initial_delay)
440 perf_evlist__enable(evsel_list);
441}
442
443static void disable_counters(void)
444{
445 /*
446 * If we don't have tracee (attaching to task or cpu), counters may
447 * still be running. To get accurate group ratios, we must stop groups
448 * from counting before reading their constituent counters.
449 */
450 if (!target__none(&target))
451 perf_evlist__disable(evsel_list);
452}
453
454static volatile int workload_exec_errno;
455
456/*
457 * perf_evlist__prepare_workload will send a SIGUSR1
458 * if the fork fails, since we asked by setting its
459 * want_signal to true.
460 */
461static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
462 void *ucontext __maybe_unused)
463{
464 workload_exec_errno = info->si_value.sival_int;
465}
466
467static int perf_stat_synthesize_config(bool is_pipe)
468{
469 int err;
470
471 if (is_pipe) {
472 err = perf_event__synthesize_attrs(NULL, perf_stat.session,
473 process_synthesized_event);
474 if (err < 0) {
475 pr_err("Couldn't synthesize attrs.\n");
476 return err;
477 }
478 }
479
480 err = perf_event__synthesize_extra_attr(NULL,
481 evsel_list,
482 process_synthesized_event,
483 is_pipe);
484
485 err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
486 process_synthesized_event,
487 NULL);
488 if (err < 0) {
489 pr_err("Couldn't synthesize thread map.\n");
490 return err;
491 }
492
493 err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
494 process_synthesized_event, NULL);
495 if (err < 0) {
496 pr_err("Couldn't synthesize thread map.\n");
497 return err;
498 }
499
500 err = perf_event__synthesize_stat_config(NULL, &stat_config,
501 process_synthesized_event, NULL);
502 if (err < 0) {
503 pr_err("Couldn't synthesize config.\n");
504 return err;
505 }
506
507 return 0;
508}
509
510#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
511
512static int __store_counter_ids(struct perf_evsel *counter)
513{
514 int cpu, thread;
515
516 for (cpu = 0; cpu < xyarray__max_x(counter->fd); cpu++) {
517 for (thread = 0; thread < xyarray__max_y(counter->fd);
518 thread++) {
519 int fd = FD(counter, cpu, thread);
520
521 if (perf_evlist__id_add_fd(evsel_list, counter,
522 cpu, thread, fd) < 0)
523 return -1;
524 }
525 }
526
527 return 0;
528}
529
530static int store_counter_ids(struct perf_evsel *counter)
531{
532 struct cpu_map *cpus = counter->cpus;
533 struct thread_map *threads = counter->threads;
534
535 if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
536 return -ENOMEM;
537
538 return __store_counter_ids(counter);
539}
540
541static bool perf_evsel__should_store_id(struct perf_evsel *counter)
542{
543 return STAT_RECORD || counter->attr.read_format & PERF_FORMAT_ID;
544}
545
546static struct perf_evsel *perf_evsel__reset_weak_group(struct perf_evsel *evsel)
547{
548 struct perf_evsel *c2, *leader;
549 bool is_open = true;
550
551 leader = evsel->leader;
552 pr_debug("Weak group for %s/%d failed\n",
553 leader->name, leader->nr_members);
554
555 /*
556 * for_each_group_member doesn't work here because it doesn't
557 * include the first entry.
558 */
559 evlist__for_each_entry(evsel_list, c2) {
560 if (c2 == evsel)
561 is_open = false;
562 if (c2->leader == leader) {
563 if (is_open)
564 perf_evsel__close(c2);
565 c2->leader = c2;
566 c2->nr_members = 0;
567 }
568 }
569 return leader;
570}
571
572static int __run_perf_stat(int argc, const char **argv)
573{
574 int interval = stat_config.interval;
575 int times = stat_config.times;
576 int timeout = stat_config.timeout;
577 char msg[BUFSIZ];
578 unsigned long long t0, t1;
579 struct perf_evsel *counter;
580 struct timespec ts;
581 size_t l;
582 int status = 0;
583 const bool forks = (argc > 0);
584 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
585 struct perf_evsel_config_term *err_term;
586
587 if (interval) {
588 ts.tv_sec = interval / USEC_PER_MSEC;
589 ts.tv_nsec = (interval % USEC_PER_MSEC) * NSEC_PER_MSEC;
590 } else if (timeout) {
591 ts.tv_sec = timeout / USEC_PER_MSEC;
592 ts.tv_nsec = (timeout % USEC_PER_MSEC) * NSEC_PER_MSEC;
593 } else {
594 ts.tv_sec = 1;
595 ts.tv_nsec = 0;
596 }
597
598 if (forks) {
599 if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
600 workload_exec_failed_signal) < 0) {
601 perror("failed to prepare workload");
602 return -1;
603 }
604 child_pid = evsel_list->workload.pid;
605 }
606
607 if (group)
608 perf_evlist__set_leader(evsel_list);
609
610 evlist__for_each_entry(evsel_list, counter) {
611try_again:
612 if (create_perf_stat_counter(counter) < 0) {
613
614 /* Weak group failed. Reset the group. */
615 if ((errno == EINVAL || errno == EBADF) &&
616 counter->leader != counter &&
617 counter->weak_group) {
618 counter = perf_evsel__reset_weak_group(counter);
619 goto try_again;
620 }
621
622 /*
623 * PPC returns ENXIO for HW counters until 2.6.37
624 * (behavior changed with commit b0a873e).
625 */
626 if (errno == EINVAL || errno == ENOSYS ||
627 errno == ENOENT || errno == EOPNOTSUPP ||
628 errno == ENXIO) {
629 if (verbose > 0)
630 ui__warning("%s event is not supported by the kernel.\n",
631 perf_evsel__name(counter));
632 counter->supported = false;
633
634 if ((counter->leader != counter) ||
635 !(counter->leader->nr_members > 1))
636 continue;
637 } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
638 if (verbose > 0)
639 ui__warning("%s\n", msg);
640 goto try_again;
641 } else if (target__has_per_thread(&target) &&
642 evsel_list->threads &&
643 evsel_list->threads->err_thread != -1) {
644 /*
645 * For global --per-thread case, skip current
646 * error thread.
647 */
648 if (!thread_map__remove(evsel_list->threads,
649 evsel_list->threads->err_thread)) {
650 evsel_list->threads->err_thread = -1;
651 goto try_again;
652 }
653 }
654
655 perf_evsel__open_strerror(counter, &target,
656 errno, msg, sizeof(msg));
657 ui__error("%s\n", msg);
658
659 if (child_pid != -1)
660 kill(child_pid, SIGTERM);
661
662 return -1;
663 }
664 counter->supported = true;
665
666 l = strlen(counter->unit);
667 if (l > unit_width)
668 unit_width = l;
669
670 if (perf_evsel__should_store_id(counter) &&
671 store_counter_ids(counter))
672 return -1;
673 }
674
675 if (perf_evlist__apply_filters(evsel_list, &counter)) {
676 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
677 counter->filter, perf_evsel__name(counter), errno,
678 str_error_r(errno, msg, sizeof(msg)));
679 return -1;
680 }
681
682 if (perf_evlist__apply_drv_configs(evsel_list, &counter, &err_term)) {
683 pr_err("failed to set config \"%s\" on event %s with %d (%s)\n",
684 err_term->val.drv_cfg, perf_evsel__name(counter), errno,
685 str_error_r(errno, msg, sizeof(msg)));
686 return -1;
687 }
688
689 if (STAT_RECORD) {
690 int err, fd = perf_data__fd(&perf_stat.data);
691
692 if (is_pipe) {
693 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
694 } else {
695 err = perf_session__write_header(perf_stat.session, evsel_list,
696 fd, false);
697 }
698
699 if (err < 0)
700 return err;
701
702 err = perf_stat_synthesize_config(is_pipe);
703 if (err < 0)
704 return err;
705 }
706
707 /*
708 * Enable counters and exec the command:
709 */
710 t0 = rdclock();
711 clock_gettime(CLOCK_MONOTONIC, &ref_time);
712
713 if (forks) {
714 perf_evlist__start_workload(evsel_list);
715 enable_counters();
716
717 if (interval || timeout) {
718 while (!waitpid(child_pid, &status, WNOHANG)) {
719 nanosleep(&ts, NULL);
720 if (timeout)
721 break;
722 process_interval();
723 if (interval_count && !(--times))
724 break;
725 }
726 }
727 waitpid(child_pid, &status, 0);
728
729 if (workload_exec_errno) {
730 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
731 pr_err("Workload failed: %s\n", emsg);
732 return -1;
733 }
734
735 if (WIFSIGNALED(status))
736 psignal(WTERMSIG(status), argv[0]);
737 } else {
738 enable_counters();
739 while (!done) {
740 nanosleep(&ts, NULL);
741 if (timeout)
742 break;
743 if (interval) {
744 process_interval();
745 if (interval_count && !(--times))
746 break;
747 }
748 }
749 }
750
751 disable_counters();
752
753 t1 = rdclock();
754
755 update_stats(&walltime_nsecs_stats, t1 - t0);
756
757 /*
758 * Closing a group leader splits the group, and as we only disable
759 * group leaders, results in remaining events becoming enabled. To
760 * avoid arbitrary skew, we must read all counters before closing any
761 * group leaders.
762 */
763 read_counters();
764 perf_evlist__close(evsel_list);
765
766 return WEXITSTATUS(status);
767}
768
769static int run_perf_stat(int argc, const char **argv)
770{
771 int ret;
772
773 if (pre_cmd) {
774 ret = system(pre_cmd);
775 if (ret)
776 return ret;
777 }
778
779 if (sync_run)
780 sync();
781
782 ret = __run_perf_stat(argc, argv);
783 if (ret)
784 return ret;
785
786 if (post_cmd) {
787 ret = system(post_cmd);
788 if (ret)
789 return ret;
790 }
791
792 return ret;
793}
794
795static void print_running(u64 run, u64 ena)
796{
797 if (csv_output) {
798 fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
799 csv_sep,
800 run,
801 csv_sep,
802 ena ? 100.0 * run / ena : 100.0);
803 } else if (run != ena) {
804 fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
805 }
806}
807
808static void print_noise_pct(double total, double avg)
809{
810 double pct = rel_stddev_stats(total, avg);
811
812 if (csv_output)
813 fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
814 else if (pct)
815 fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
816}
817
818static void print_noise(struct perf_evsel *evsel, double avg)
819{
820 struct perf_stat_evsel *ps;
821
822 if (run_count == 1)
823 return;
824
825 ps = evsel->stats;
826 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
827}
828
829static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
830{
831 switch (stat_config.aggr_mode) {
832 case AGGR_CORE:
833 fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
834 cpu_map__id_to_socket(id),
835 csv_output ? 0 : -8,
836 cpu_map__id_to_cpu(id),
837 csv_sep,
838 csv_output ? 0 : 4,
839 nr,
840 csv_sep);
841 break;
842 case AGGR_SOCKET:
843 fprintf(stat_config.output, "S%*d%s%*d%s",
844 csv_output ? 0 : -5,
845 id,
846 csv_sep,
847 csv_output ? 0 : 4,
848 nr,
849 csv_sep);
850 break;
851 case AGGR_NONE:
852 fprintf(stat_config.output, "CPU%*d%s",
853 csv_output ? 0 : -4,
854 perf_evsel__cpus(evsel)->map[id], csv_sep);
855 break;
856 case AGGR_THREAD:
857 fprintf(stat_config.output, "%*s-%*d%s",
858 csv_output ? 0 : 16,
859 thread_map__comm(evsel->threads, id),
860 csv_output ? 0 : -8,
861 thread_map__pid(evsel->threads, id),
862 csv_sep);
863 break;
864 case AGGR_GLOBAL:
865 case AGGR_UNSET:
866 default:
867 break;
868 }
869}
870
871struct outstate {
872 FILE *fh;
873 bool newline;
874 const char *prefix;
875 int nfields;
876 int id, nr;
877 struct perf_evsel *evsel;
878};
879
880#define METRIC_LEN 35
881
882static void new_line_std(void *ctx)
883{
884 struct outstate *os = ctx;
885
886 os->newline = true;
887}
888
889static void do_new_line_std(struct outstate *os)
890{
891 fputc('\n', os->fh);
892 fputs(os->prefix, os->fh);
893 aggr_printout(os->evsel, os->id, os->nr);
894 if (stat_config.aggr_mode == AGGR_NONE)
895 fprintf(os->fh, " ");
896 fprintf(os->fh, " ");
897}
898
899static void print_metric_std(void *ctx, const char *color, const char *fmt,
900 const char *unit, double val)
901{
902 struct outstate *os = ctx;
903 FILE *out = os->fh;
904 int n;
905 bool newline = os->newline;
906
907 os->newline = false;
908
909 if (unit == NULL || fmt == NULL) {
910 fprintf(out, "%-*s", METRIC_LEN, "");
911 return;
912 }
913
914 if (newline)
915 do_new_line_std(os);
916
917 n = fprintf(out, " # ");
918 if (color)
919 n += color_fprintf(out, color, fmt, val);
920 else
921 n += fprintf(out, fmt, val);
922 fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
923}
924
925static void new_line_csv(void *ctx)
926{
927 struct outstate *os = ctx;
928 int i;
929
930 fputc('\n', os->fh);
931 if (os->prefix)
932 fprintf(os->fh, "%s%s", os->prefix, csv_sep);
933 aggr_printout(os->evsel, os->id, os->nr);
934 for (i = 0; i < os->nfields; i++)
935 fputs(csv_sep, os->fh);
936}
937
938static void print_metric_csv(void *ctx,
939 const char *color __maybe_unused,
940 const char *fmt, const char *unit, double val)
941{
942 struct outstate *os = ctx;
943 FILE *out = os->fh;
944 char buf[64], *vals, *ends;
945
946 if (unit == NULL || fmt == NULL) {
947 fprintf(out, "%s%s", csv_sep, csv_sep);
948 return;
949 }
950 snprintf(buf, sizeof(buf), fmt, val);
951 ends = vals = ltrim(buf);
952 while (isdigit(*ends) || *ends == '.')
953 ends++;
954 *ends = 0;
955 while (isspace(*unit))
956 unit++;
957 fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
958}
959
960#define METRIC_ONLY_LEN 20
961
962/* Filter out some columns that don't work well in metrics only mode */
963
964static bool valid_only_metric(const char *unit)
965{
966 if (!unit)
967 return false;
968 if (strstr(unit, "/sec") ||
969 strstr(unit, "hz") ||
970 strstr(unit, "Hz") ||
971 strstr(unit, "CPUs utilized"))
972 return false;
973 return true;
974}
975
976static const char *fixunit(char *buf, struct perf_evsel *evsel,
977 const char *unit)
978{
979 if (!strncmp(unit, "of all", 6)) {
980 snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
981 unit);
982 return buf;
983 }
984 return unit;
985}
986
987static void print_metric_only(void *ctx, const char *color, const char *fmt,
988 const char *unit, double val)
989{
990 struct outstate *os = ctx;
991 FILE *out = os->fh;
992 int n;
993 char buf[1024];
994 unsigned mlen = METRIC_ONLY_LEN;
995
996 if (!valid_only_metric(unit))
997 return;
998 unit = fixunit(buf, os->evsel, unit);
999 if (color)
1000 n = color_fprintf(out, color, fmt, val);
1001 else
1002 n = fprintf(out, fmt, val);
1003 if (n > METRIC_ONLY_LEN)
1004 n = METRIC_ONLY_LEN;
1005 if (mlen < strlen(unit))
1006 mlen = strlen(unit) + 1;
1007 fprintf(out, "%*s", mlen - n, "");
1008}
1009
1010static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
1011 const char *fmt,
1012 const char *unit, double val)
1013{
1014 struct outstate *os = ctx;
1015 FILE *out = os->fh;
1016 char buf[64], *vals, *ends;
1017 char tbuf[1024];
1018
1019 if (!valid_only_metric(unit))
1020 return;
1021 unit = fixunit(tbuf, os->evsel, unit);
1022 snprintf(buf, sizeof buf, fmt, val);
1023 ends = vals = ltrim(buf);
1024 while (isdigit(*ends) || *ends == '.')
1025 ends++;
1026 *ends = 0;
1027 fprintf(out, "%s%s", vals, csv_sep);
1028}
1029
1030static void new_line_metric(void *ctx __maybe_unused)
1031{
1032}
1033
1034static void print_metric_header(void *ctx, const char *color __maybe_unused,
1035 const char *fmt __maybe_unused,
1036 const char *unit, double val __maybe_unused)
1037{
1038 struct outstate *os = ctx;
1039 char tbuf[1024];
1040
1041 if (!valid_only_metric(unit))
1042 return;
1043 unit = fixunit(tbuf, os->evsel, unit);
1044 if (csv_output)
1045 fprintf(os->fh, "%s%s", unit, csv_sep);
1046 else
1047 fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
1048}
1049
1050static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1051{
1052 FILE *output = stat_config.output;
1053 double msecs = avg / NSEC_PER_MSEC;
1054 const char *fmt_v, *fmt_n;
1055 char name[25];
1056
1057 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
1058 fmt_n = csv_output ? "%s" : "%-25s";
1059
1060 aggr_printout(evsel, id, nr);
1061
1062 scnprintf(name, sizeof(name), "%s%s",
1063 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
1064
1065 fprintf(output, fmt_v, msecs, csv_sep);
1066
1067 if (csv_output)
1068 fprintf(output, "%s%s", evsel->unit, csv_sep);
1069 else
1070 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
1071
1072 fprintf(output, fmt_n, name);
1073
1074 if (evsel->cgrp)
1075 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1076}
1077
1078static int first_shadow_cpu(struct perf_evsel *evsel, int id)
1079{
1080 int i;
1081
1082 if (!aggr_get_id)
1083 return 0;
1084
1085 if (stat_config.aggr_mode == AGGR_NONE)
1086 return id;
1087
1088 if (stat_config.aggr_mode == AGGR_GLOBAL)
1089 return 0;
1090
1091 for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
1092 int cpu2 = perf_evsel__cpus(evsel)->map[i];
1093
1094 if (aggr_get_id(evsel_list->cpus, cpu2) == id)
1095 return cpu2;
1096 }
1097 return 0;
1098}
1099
1100static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1101{
1102 FILE *output = stat_config.output;
1103 double sc = evsel->scale;
1104 const char *fmt;
1105
1106 if (csv_output) {
1107 fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
1108 } else {
1109 if (big_num)
1110 fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
1111 else
1112 fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
1113 }
1114
1115 aggr_printout(evsel, id, nr);
1116
1117 fprintf(output, fmt, avg, csv_sep);
1118
1119 if (evsel->unit)
1120 fprintf(output, "%-*s%s",
1121 csv_output ? 0 : unit_width,
1122 evsel->unit, csv_sep);
1123
1124 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1125
1126 if (evsel->cgrp)
1127 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1128}
1129
1130static bool is_mixed_hw_group(struct perf_evsel *counter)
1131{
1132 struct perf_evlist *evlist = counter->evlist;
1133 u32 pmu_type = counter->attr.type;
1134 struct perf_evsel *pos;
1135
1136 if (counter->nr_members < 2)
1137 return false;
1138
1139 evlist__for_each_entry(evlist, pos) {
1140 /* software events can be part of any hardware group */
1141 if (pos->attr.type == PERF_TYPE_SOFTWARE)
1142 continue;
1143 if (pmu_type == PERF_TYPE_SOFTWARE) {
1144 pmu_type = pos->attr.type;
1145 continue;
1146 }
1147 if (pmu_type != pos->attr.type)
1148 return true;
1149 }
1150
1151 return false;
1152}
1153
1154static void printout(int id, int nr, struct perf_evsel *counter, double uval,
1155 char *prefix, u64 run, u64 ena, double noise,
1156 struct runtime_stat *st)
1157{
1158 struct perf_stat_output_ctx out;
1159 struct outstate os = {
1160 .fh = stat_config.output,
1161 .prefix = prefix ? prefix : "",
1162 .id = id,
1163 .nr = nr,
1164 .evsel = counter,
1165 };
1166 print_metric_t pm = print_metric_std;
1167 void (*nl)(void *);
1168
1169 if (metric_only) {
1170 nl = new_line_metric;
1171 if (csv_output)
1172 pm = print_metric_only_csv;
1173 else
1174 pm = print_metric_only;
1175 } else
1176 nl = new_line_std;
1177
1178 if (csv_output && !metric_only) {
1179 static int aggr_fields[] = {
1180 [AGGR_GLOBAL] = 0,
1181 [AGGR_THREAD] = 1,
1182 [AGGR_NONE] = 1,
1183 [AGGR_SOCKET] = 2,
1184 [AGGR_CORE] = 2,
1185 };
1186
1187 pm = print_metric_csv;
1188 nl = new_line_csv;
1189 os.nfields = 3;
1190 os.nfields += aggr_fields[stat_config.aggr_mode];
1191 if (counter->cgrp)
1192 os.nfields++;
1193 }
1194 if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
1195 if (metric_only) {
1196 pm(&os, NULL, "", "", 0);
1197 return;
1198 }
1199 aggr_printout(counter, id, nr);
1200
1201 fprintf(stat_config.output, "%*s%s",
1202 csv_output ? 0 : 18,
1203 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1204 csv_sep);
1205
1206 if (counter->supported) {
1207 print_free_counters_hint = 1;
1208 if (is_mixed_hw_group(counter))
1209 print_mixed_hw_group_error = 1;
1210 }
1211
1212 fprintf(stat_config.output, "%-*s%s",
1213 csv_output ? 0 : unit_width,
1214 counter->unit, csv_sep);
1215
1216 fprintf(stat_config.output, "%*s",
1217 csv_output ? 0 : -25,
1218 perf_evsel__name(counter));
1219
1220 if (counter->cgrp)
1221 fprintf(stat_config.output, "%s%s",
1222 csv_sep, counter->cgrp->name);
1223
1224 if (!csv_output)
1225 pm(&os, NULL, NULL, "", 0);
1226 print_noise(counter, noise);
1227 print_running(run, ena);
1228 if (csv_output)
1229 pm(&os, NULL, NULL, "", 0);
1230 return;
1231 }
1232
1233 if (metric_only)
1234 /* nothing */;
1235 else if (nsec_counter(counter))
1236 nsec_printout(id, nr, counter, uval);
1237 else
1238 abs_printout(id, nr, counter, uval);
1239
1240 out.print_metric = pm;
1241 out.new_line = nl;
1242 out.ctx = &os;
1243 out.force_header = false;
1244
1245 if (csv_output && !metric_only) {
1246 print_noise(counter, noise);
1247 print_running(run, ena);
1248 }
1249
1250 perf_stat__print_shadow_stats(counter, uval,
1251 first_shadow_cpu(counter, id),
1252 &out, &metric_events, st);
1253 if (!csv_output && !metric_only) {
1254 print_noise(counter, noise);
1255 print_running(run, ena);
1256 }
1257}
1258
1259static void aggr_update_shadow(void)
1260{
1261 int cpu, s2, id, s;
1262 u64 val;
1263 struct perf_evsel *counter;
1264
1265 for (s = 0; s < aggr_map->nr; s++) {
1266 id = aggr_map->map[s];
1267 evlist__for_each_entry(evsel_list, counter) {
1268 val = 0;
1269 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1270 s2 = aggr_get_id(evsel_list->cpus, cpu);
1271 if (s2 != id)
1272 continue;
1273 val += perf_counts(counter->counts, cpu, 0)->val;
1274 }
1275 perf_stat__update_shadow_stats(counter, val,
1276 first_shadow_cpu(counter, id),
1277 &rt_stat);
1278 }
1279 }
1280}
1281
1282static void uniquify_event_name(struct perf_evsel *counter)
1283{
1284 char *new_name;
1285 char *config;
1286
1287 if (counter->uniquified_name ||
1288 !counter->pmu_name || !strncmp(counter->name, counter->pmu_name,
1289 strlen(counter->pmu_name)))
1290 return;
1291
1292 config = strchr(counter->name, '/');
1293 if (config) {
1294 if (asprintf(&new_name,
1295 "%s%s", counter->pmu_name, config) > 0) {
1296 free(counter->name);
1297 counter->name = new_name;
1298 }
1299 } else {
1300 if (asprintf(&new_name,
1301 "%s [%s]", counter->name, counter->pmu_name) > 0) {
1302 free(counter->name);
1303 counter->name = new_name;
1304 }
1305 }
1306
1307 counter->uniquified_name = true;
1308}
1309
1310static void collect_all_aliases(struct perf_evsel *counter,
1311 void (*cb)(struct perf_evsel *counter, void *data,
1312 bool first),
1313 void *data)
1314{
1315 struct perf_evsel *alias;
1316
1317 alias = list_prepare_entry(counter, &(evsel_list->entries), node);
1318 list_for_each_entry_continue (alias, &evsel_list->entries, node) {
1319 if (strcmp(perf_evsel__name(alias), perf_evsel__name(counter)) ||
1320 alias->scale != counter->scale ||
1321 alias->cgrp != counter->cgrp ||
1322 strcmp(alias->unit, counter->unit) ||
1323 nsec_counter(alias) != nsec_counter(counter))
1324 break;
1325 alias->merged_stat = true;
1326 cb(alias, data, false);
1327 }
1328}
1329
1330static bool collect_data(struct perf_evsel *counter,
1331 void (*cb)(struct perf_evsel *counter, void *data,
1332 bool first),
1333 void *data)
1334{
1335 if (counter->merged_stat)
1336 return false;
1337 cb(counter, data, true);
1338 if (no_merge)
1339 uniquify_event_name(counter);
1340 else if (counter->auto_merge_stats)
1341 collect_all_aliases(counter, cb, data);
1342 return true;
1343}
1344
1345struct aggr_data {
1346 u64 ena, run, val;
1347 int id;
1348 int nr;
1349 int cpu;
1350};
1351
1352static void aggr_cb(struct perf_evsel *counter, void *data, bool first)
1353{
1354 struct aggr_data *ad = data;
1355 int cpu, s2;
1356
1357 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1358 struct perf_counts_values *counts;
1359
1360 s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
1361 if (s2 != ad->id)
1362 continue;
1363 if (first)
1364 ad->nr++;
1365 counts = perf_counts(counter->counts, cpu, 0);
1366 /*
1367 * When any result is bad, make them all to give
1368 * consistent output in interval mode.
1369 */
1370 if (counts->ena == 0 || counts->run == 0 ||
1371 counter->counts->scaled == -1) {
1372 ad->ena = 0;
1373 ad->run = 0;
1374 break;
1375 }
1376 ad->val += counts->val;
1377 ad->ena += counts->ena;
1378 ad->run += counts->run;
1379 }
1380}
1381
1382static void print_aggr(char *prefix)
1383{
1384 FILE *output = stat_config.output;
1385 struct perf_evsel *counter;
1386 int s, id, nr;
1387 double uval;
1388 u64 ena, run, val;
1389 bool first;
1390
1391 if (!(aggr_map || aggr_get_id))
1392 return;
1393
1394 aggr_update_shadow();
1395
1396 /*
1397 * With metric_only everything is on a single line.
1398 * Without each counter has its own line.
1399 */
1400 for (s = 0; s < aggr_map->nr; s++) {
1401 struct aggr_data ad;
1402 if (prefix && metric_only)
1403 fprintf(output, "%s", prefix);
1404
1405 ad.id = id = aggr_map->map[s];
1406 first = true;
1407 evlist__for_each_entry(evsel_list, counter) {
1408 if (is_duration_time(counter))
1409 continue;
1410
1411 ad.val = ad.ena = ad.run = 0;
1412 ad.nr = 0;
1413 if (!collect_data(counter, aggr_cb, &ad))
1414 continue;
1415 nr = ad.nr;
1416 ena = ad.ena;
1417 run = ad.run;
1418 val = ad.val;
1419 if (first && metric_only) {
1420 first = false;
1421 aggr_printout(counter, id, nr);
1422 }
1423 if (prefix && !metric_only)
1424 fprintf(output, "%s", prefix);
1425
1426 uval = val * counter->scale;
1427 printout(id, nr, counter, uval, prefix, run, ena, 1.0,
1428 &rt_stat);
1429 if (!metric_only)
1430 fputc('\n', output);
1431 }
1432 if (metric_only)
1433 fputc('\n', output);
1434 }
1435}
1436
1437static int cmp_val(const void *a, const void *b)
1438{
1439 return ((struct perf_aggr_thread_value *)b)->val -
1440 ((struct perf_aggr_thread_value *)a)->val;
1441}
1442
1443static struct perf_aggr_thread_value *sort_aggr_thread(
1444 struct perf_evsel *counter,
1445 int nthreads, int ncpus,
1446 int *ret)
1447{
1448 int cpu, thread, i = 0;
1449 double uval;
1450 struct perf_aggr_thread_value *buf;
1451
1452 buf = calloc(nthreads, sizeof(struct perf_aggr_thread_value));
1453 if (!buf)
1454 return NULL;
1455
1456 for (thread = 0; thread < nthreads; thread++) {
1457 u64 ena = 0, run = 0, val = 0;
1458
1459 for (cpu = 0; cpu < ncpus; cpu++) {
1460 val += perf_counts(counter->counts, cpu, thread)->val;
1461 ena += perf_counts(counter->counts, cpu, thread)->ena;
1462 run += perf_counts(counter->counts, cpu, thread)->run;
1463 }
1464
1465 uval = val * counter->scale;
1466
1467 /*
1468 * Skip value 0 when enabling --per-thread globally,
1469 * otherwise too many 0 output.
1470 */
1471 if (uval == 0.0 && target__has_per_thread(&target))
1472 continue;
1473
1474 buf[i].counter = counter;
1475 buf[i].id = thread;
1476 buf[i].uval = uval;
1477 buf[i].val = val;
1478 buf[i].run = run;
1479 buf[i].ena = ena;
1480 i++;
1481 }
1482
1483 qsort(buf, i, sizeof(struct perf_aggr_thread_value), cmp_val);
1484
1485 if (ret)
1486 *ret = i;
1487
1488 return buf;
1489}
1490
1491static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
1492{
1493 FILE *output = stat_config.output;
1494 int nthreads = thread_map__nr(counter->threads);
1495 int ncpus = cpu_map__nr(counter->cpus);
1496 int thread, sorted_threads, id;
1497 struct perf_aggr_thread_value *buf;
1498
1499 buf = sort_aggr_thread(counter, nthreads, ncpus, &sorted_threads);
1500 if (!buf) {
1501 perror("cannot sort aggr thread");
1502 return;
1503 }
1504
1505 for (thread = 0; thread < sorted_threads; thread++) {
1506 if (prefix)
1507 fprintf(output, "%s", prefix);
1508
1509 id = buf[thread].id;
1510 if (stat_config.stats)
1511 printout(id, 0, buf[thread].counter, buf[thread].uval,
1512 prefix, buf[thread].run, buf[thread].ena, 1.0,
1513 &stat_config.stats[id]);
1514 else
1515 printout(id, 0, buf[thread].counter, buf[thread].uval,
1516 prefix, buf[thread].run, buf[thread].ena, 1.0,
1517 &rt_stat);
1518 fputc('\n', output);
1519 }
1520
1521 free(buf);
1522}
1523
1524struct caggr_data {
1525 double avg, avg_enabled, avg_running;
1526};
1527
1528static void counter_aggr_cb(struct perf_evsel *counter, void *data,
1529 bool first __maybe_unused)
1530{
1531 struct caggr_data *cd = data;
1532 struct perf_stat_evsel *ps = counter->stats;
1533
1534 cd->avg += avg_stats(&ps->res_stats[0]);
1535 cd->avg_enabled += avg_stats(&ps->res_stats[1]);
1536 cd->avg_running += avg_stats(&ps->res_stats[2]);
1537}
1538
1539/*
1540 * Print out the results of a single counter:
1541 * aggregated counts in system-wide mode
1542 */
1543static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1544{
1545 FILE *output = stat_config.output;
1546 double uval;
1547 struct caggr_data cd = { .avg = 0.0 };
1548
1549 if (!collect_data(counter, counter_aggr_cb, &cd))
1550 return;
1551
1552 if (prefix && !metric_only)
1553 fprintf(output, "%s", prefix);
1554
1555 uval = cd.avg * counter->scale;
1556 printout(-1, 0, counter, uval, prefix, cd.avg_running, cd.avg_enabled,
1557 cd.avg, &rt_stat);
1558 if (!metric_only)
1559 fprintf(output, "\n");
1560}
1561
1562static void counter_cb(struct perf_evsel *counter, void *data,
1563 bool first __maybe_unused)
1564{
1565 struct aggr_data *ad = data;
1566
1567 ad->val += perf_counts(counter->counts, ad->cpu, 0)->val;
1568 ad->ena += perf_counts(counter->counts, ad->cpu, 0)->ena;
1569 ad->run += perf_counts(counter->counts, ad->cpu, 0)->run;
1570}
1571
1572/*
1573 * Print out the results of a single counter:
1574 * does not use aggregated count in system-wide
1575 */
1576static void print_counter(struct perf_evsel *counter, char *prefix)
1577{
1578 FILE *output = stat_config.output;
1579 u64 ena, run, val;
1580 double uval;
1581 int cpu;
1582
1583 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1584 struct aggr_data ad = { .cpu = cpu };
1585
1586 if (!collect_data(counter, counter_cb, &ad))
1587 return;
1588 val = ad.val;
1589 ena = ad.ena;
1590 run = ad.run;
1591
1592 if (prefix)
1593 fprintf(output, "%s", prefix);
1594
1595 uval = val * counter->scale;
1596 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0,
1597 &rt_stat);
1598
1599 fputc('\n', output);
1600 }
1601}
1602
1603static void print_no_aggr_metric(char *prefix)
1604{
1605 int cpu;
1606 int nrcpus = 0;
1607 struct perf_evsel *counter;
1608 u64 ena, run, val;
1609 double uval;
1610
1611 nrcpus = evsel_list->cpus->nr;
1612 for (cpu = 0; cpu < nrcpus; cpu++) {
1613 bool first = true;
1614
1615 if (prefix)
1616 fputs(prefix, stat_config.output);
1617 evlist__for_each_entry(evsel_list, counter) {
1618 if (is_duration_time(counter))
1619 continue;
1620 if (first) {
1621 aggr_printout(counter, cpu, 0);
1622 first = false;
1623 }
1624 val = perf_counts(counter->counts, cpu, 0)->val;
1625 ena = perf_counts(counter->counts, cpu, 0)->ena;
1626 run = perf_counts(counter->counts, cpu, 0)->run;
1627
1628 uval = val * counter->scale;
1629 printout(cpu, 0, counter, uval, prefix, run, ena, 1.0,
1630 &rt_stat);
1631 }
1632 fputc('\n', stat_config.output);
1633 }
1634}
1635
1636static int aggr_header_lens[] = {
1637 [AGGR_CORE] = 18,
1638 [AGGR_SOCKET] = 12,
1639 [AGGR_NONE] = 6,
1640 [AGGR_THREAD] = 24,
1641 [AGGR_GLOBAL] = 0,
1642};
1643
1644static const char *aggr_header_csv[] = {
1645 [AGGR_CORE] = "core,cpus,",
1646 [AGGR_SOCKET] = "socket,cpus",
1647 [AGGR_NONE] = "cpu,",
1648 [AGGR_THREAD] = "comm-pid,",
1649 [AGGR_GLOBAL] = ""
1650};
1651
1652static void print_metric_headers(const char *prefix, bool no_indent)
1653{
1654 struct perf_stat_output_ctx out;
1655 struct perf_evsel *counter;
1656 struct outstate os = {
1657 .fh = stat_config.output
1658 };
1659
1660 if (prefix)
1661 fprintf(stat_config.output, "%s", prefix);
1662
1663 if (!csv_output && !no_indent)
1664 fprintf(stat_config.output, "%*s",
1665 aggr_header_lens[stat_config.aggr_mode], "");
1666 if (csv_output) {
1667 if (stat_config.interval)
1668 fputs("time,", stat_config.output);
1669 fputs(aggr_header_csv[stat_config.aggr_mode],
1670 stat_config.output);
1671 }
1672
1673 /* Print metrics headers only */
1674 evlist__for_each_entry(evsel_list, counter) {
1675 if (is_duration_time(counter))
1676 continue;
1677 os.evsel = counter;
1678 out.ctx = &os;
1679 out.print_metric = print_metric_header;
1680 out.new_line = new_line_metric;
1681 out.force_header = true;
1682 os.evsel = counter;
1683 perf_stat__print_shadow_stats(counter, 0,
1684 0,
1685 &out,
1686 &metric_events,
1687 &rt_stat);
1688 }
1689 fputc('\n', stat_config.output);
1690}
1691
1692static void print_interval(char *prefix, struct timespec *ts)
1693{
1694 FILE *output = stat_config.output;
1695 static int num_print_interval;
1696
1697 sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
1698
1699 if (num_print_interval == 0 && !csv_output) {
1700 switch (stat_config.aggr_mode) {
1701 case AGGR_SOCKET:
1702 fprintf(output, "# time socket cpus");
1703 if (!metric_only)
1704 fprintf(output, " counts %*s events\n", unit_width, "unit");
1705 break;
1706 case AGGR_CORE:
1707 fprintf(output, "# time core cpus");
1708 if (!metric_only)
1709 fprintf(output, " counts %*s events\n", unit_width, "unit");
1710 break;
1711 case AGGR_NONE:
1712 fprintf(output, "# time CPU");
1713 if (!metric_only)
1714 fprintf(output, " counts %*s events\n", unit_width, "unit");
1715 break;
1716 case AGGR_THREAD:
1717 fprintf(output, "# time comm-pid");
1718 if (!metric_only)
1719 fprintf(output, " counts %*s events\n", unit_width, "unit");
1720 break;
1721 case AGGR_GLOBAL:
1722 default:
1723 fprintf(output, "# time");
1724 if (!metric_only)
1725 fprintf(output, " counts %*s events\n", unit_width, "unit");
1726 case AGGR_UNSET:
1727 break;
1728 }
1729 }
1730
1731 if (num_print_interval == 0 && metric_only)
1732 print_metric_headers(" ", true);
1733 if (++num_print_interval == 25)
1734 num_print_interval = 0;
1735}
1736
1737static void print_header(int argc, const char **argv)
1738{
1739 FILE *output = stat_config.output;
1740 int i;
1741
1742 fflush(stdout);
1743
1744 if (!csv_output) {
1745 fprintf(output, "\n");
1746 fprintf(output, " Performance counter stats for ");
1747 if (target.system_wide)
1748 fprintf(output, "\'system wide");
1749 else if (target.cpu_list)
1750 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1751 else if (!target__has_task(&target)) {
1752 fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1753 for (i = 1; argv && (i < argc); i++)
1754 fprintf(output, " %s", argv[i]);
1755 } else if (target.pid)
1756 fprintf(output, "process id \'%s", target.pid);
1757 else
1758 fprintf(output, "thread id \'%s", target.tid);
1759
1760 fprintf(output, "\'");
1761 if (run_count > 1)
1762 fprintf(output, " (%d runs)", run_count);
1763 fprintf(output, ":\n\n");
1764 }
1765}
1766
1767static void print_footer(void)
1768{
1769 FILE *output = stat_config.output;
1770 int n;
1771
1772 if (!null_run)
1773 fprintf(output, "\n");
1774 fprintf(output, " %17.9f seconds time elapsed",
1775 avg_stats(&walltime_nsecs_stats) / NSEC_PER_SEC);
1776 if (run_count > 1) {
1777 fprintf(output, " ");
1778 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1779 avg_stats(&walltime_nsecs_stats));
1780 }
1781 fprintf(output, "\n\n");
1782
1783 if (print_free_counters_hint &&
1784 sysctl__read_int("kernel/nmi_watchdog", &n) >= 0 &&
1785 n > 0)
1786 fprintf(output,
1787"Some events weren't counted. Try disabling the NMI watchdog:\n"
1788" echo 0 > /proc/sys/kernel/nmi_watchdog\n"
1789" perf stat ...\n"
1790" echo 1 > /proc/sys/kernel/nmi_watchdog\n");
1791
1792 if (print_mixed_hw_group_error)
1793 fprintf(output,
1794 "The events in group usually have to be from "
1795 "the same PMU. Try reorganizing the group.\n");
1796}
1797
1798static void print_counters(struct timespec *ts, int argc, const char **argv)
1799{
1800 int interval = stat_config.interval;
1801 struct perf_evsel *counter;
1802 char buf[64], *prefix = NULL;
1803
1804 /* Do not print anything if we record to the pipe. */
1805 if (STAT_RECORD && perf_stat.data.is_pipe)
1806 return;
1807
1808 if (interval)
1809 print_interval(prefix = buf, ts);
1810 else
1811 print_header(argc, argv);
1812
1813 if (metric_only) {
1814 static int num_print_iv;
1815
1816 if (num_print_iv == 0 && !interval)
1817 print_metric_headers(prefix, false);
1818 if (num_print_iv++ == 25)
1819 num_print_iv = 0;
1820 if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
1821 fprintf(stat_config.output, "%s", prefix);
1822 }
1823
1824 switch (stat_config.aggr_mode) {
1825 case AGGR_CORE:
1826 case AGGR_SOCKET:
1827 print_aggr(prefix);
1828 break;
1829 case AGGR_THREAD:
1830 evlist__for_each_entry(evsel_list, counter) {
1831 if (is_duration_time(counter))
1832 continue;
1833 print_aggr_thread(counter, prefix);
1834 }
1835 break;
1836 case AGGR_GLOBAL:
1837 evlist__for_each_entry(evsel_list, counter) {
1838 if (is_duration_time(counter))
1839 continue;
1840 print_counter_aggr(counter, prefix);
1841 }
1842 if (metric_only)
1843 fputc('\n', stat_config.output);
1844 break;
1845 case AGGR_NONE:
1846 if (metric_only)
1847 print_no_aggr_metric(prefix);
1848 else {
1849 evlist__for_each_entry(evsel_list, counter) {
1850 if (is_duration_time(counter))
1851 continue;
1852 print_counter(counter, prefix);
1853 }
1854 }
1855 break;
1856 case AGGR_UNSET:
1857 default:
1858 break;
1859 }
1860
1861 if (!interval && !csv_output)
1862 print_footer();
1863
1864 fflush(stat_config.output);
1865}
1866
1867static volatile int signr = -1;
1868
1869static void skip_signal(int signo)
1870{
1871 if ((child_pid == -1) || stat_config.interval)
1872 done = 1;
1873
1874 signr = signo;
1875 /*
1876 * render child_pid harmless
1877 * won't send SIGTERM to a random
1878 * process in case of race condition
1879 * and fast PID recycling
1880 */
1881 child_pid = -1;
1882}
1883
1884static void sig_atexit(void)
1885{
1886 sigset_t set, oset;
1887
1888 /*
1889 * avoid race condition with SIGCHLD handler
1890 * in skip_signal() which is modifying child_pid
1891 * goal is to avoid send SIGTERM to a random
1892 * process
1893 */
1894 sigemptyset(&set);
1895 sigaddset(&set, SIGCHLD);
1896 sigprocmask(SIG_BLOCK, &set, &oset);
1897
1898 if (child_pid != -1)
1899 kill(child_pid, SIGTERM);
1900
1901 sigprocmask(SIG_SETMASK, &oset, NULL);
1902
1903 if (signr == -1)
1904 return;
1905
1906 signal(signr, SIG_DFL);
1907 kill(getpid(), signr);
1908}
1909
1910static int stat__set_big_num(const struct option *opt __maybe_unused,
1911 const char *s __maybe_unused, int unset)
1912{
1913 big_num_opt = unset ? 0 : 1;
1914 return 0;
1915}
1916
1917static int enable_metric_only(const struct option *opt __maybe_unused,
1918 const char *s __maybe_unused, int unset)
1919{
1920 force_metric_only = true;
1921 metric_only = !unset;
1922 return 0;
1923}
1924
1925static int parse_metric_groups(const struct option *opt,
1926 const char *str,
1927 int unset __maybe_unused)
1928{
1929 return metricgroup__parse_groups(opt, str, &metric_events);
1930}
1931
1932static const struct option stat_options[] = {
1933 OPT_BOOLEAN('T', "transaction", &transaction_run,
1934 "hardware transaction statistics"),
1935 OPT_CALLBACK('e', "event", &evsel_list, "event",
1936 "event selector. use 'perf list' to list available events",
1937 parse_events_option),
1938 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1939 "event filter", parse_filter),
1940 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1941 "child tasks do not inherit counters"),
1942 OPT_STRING('p', "pid", &target.pid, "pid",
1943 "stat events on existing process id"),
1944 OPT_STRING('t', "tid", &target.tid, "tid",
1945 "stat events on existing thread id"),
1946 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1947 "system-wide collection from all CPUs"),
1948 OPT_BOOLEAN('g', "group", &group,
1949 "put the counters into a counter group"),
1950 OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
1951 OPT_INCR('v', "verbose", &verbose,
1952 "be more verbose (show counter open errors, etc)"),
1953 OPT_INTEGER('r', "repeat", &run_count,
1954 "repeat command and print average + stddev (max: 100, forever: 0)"),
1955 OPT_BOOLEAN('n', "null", &null_run,
1956 "null run - dont start any counters"),
1957 OPT_INCR('d', "detailed", &detailed_run,
1958 "detailed run - start a lot of events"),
1959 OPT_BOOLEAN('S', "sync", &sync_run,
1960 "call sync() before starting a run"),
1961 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1962 "print large numbers with thousands\' separators",
1963 stat__set_big_num),
1964 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1965 "list of cpus to monitor in system-wide"),
1966 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1967 "disable CPU count aggregation", AGGR_NONE),
1968 OPT_BOOLEAN(0, "no-merge", &no_merge, "Do not merge identical named events"),
1969 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1970 "print counts with custom separator"),
1971 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1972 "monitor event in cgroup name only", parse_cgroups),
1973 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1974 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1975 OPT_INTEGER(0, "log-fd", &output_fd,
1976 "log output to fd, instead of stderr"),
1977 OPT_STRING(0, "pre", &pre_cmd, "command",
1978 "command to run prior to the measured command"),
1979 OPT_STRING(0, "post", &post_cmd, "command",
1980 "command to run after to the measured command"),
1981 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1982 "print counts at regular interval in ms "
1983 "(overhead is possible for values <= 100ms)"),
1984 OPT_INTEGER(0, "interval-count", &stat_config.times,
1985 "print counts for fixed number of times"),
1986 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
1987 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
1988 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1989 "aggregate counts per processor socket", AGGR_SOCKET),
1990 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1991 "aggregate counts per physical processor core", AGGR_CORE),
1992 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1993 "aggregate counts per thread", AGGR_THREAD),
1994 OPT_UINTEGER('D', "delay", &initial_delay,
1995 "ms to wait before starting measurement after program start"),
1996 OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
1997 "Only print computed metrics. No raw values", enable_metric_only),
1998 OPT_BOOLEAN(0, "topdown", &topdown_run,
1999 "measure topdown level 1 statistics"),
2000 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
2001 "measure SMI cost"),
2002 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
2003 "monitor specified metrics or metric groups (separated by ,)",
2004 parse_metric_groups),
2005 OPT_END()
2006};
2007
2008static int perf_stat__get_socket(struct cpu_map *map, int cpu)
2009{
2010 return cpu_map__get_socket(map, cpu, NULL);
2011}
2012
2013static int perf_stat__get_core(struct cpu_map *map, int cpu)
2014{
2015 return cpu_map__get_core(map, cpu, NULL);
2016}
2017
2018static int cpu_map__get_max(struct cpu_map *map)
2019{
2020 int i, max = -1;
2021
2022 for (i = 0; i < map->nr; i++) {
2023 if (map->map[i] > max)
2024 max = map->map[i];
2025 }
2026
2027 return max;
2028}
2029
2030static struct cpu_map *cpus_aggr_map;
2031
2032static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
2033{
2034 int cpu;
2035
2036 if (idx >= map->nr)
2037 return -1;
2038
2039 cpu = map->map[idx];
2040
2041 if (cpus_aggr_map->map[cpu] == -1)
2042 cpus_aggr_map->map[cpu] = get_id(map, idx);
2043
2044 return cpus_aggr_map->map[cpu];
2045}
2046
2047static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
2048{
2049 return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
2050}
2051
2052static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
2053{
2054 return perf_stat__get_aggr(perf_stat__get_core, map, idx);
2055}
2056
2057static int perf_stat_init_aggr_mode(void)
2058{
2059 int nr;
2060
2061 switch (stat_config.aggr_mode) {
2062 case AGGR_SOCKET:
2063 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
2064 perror("cannot build socket map");
2065 return -1;
2066 }
2067 aggr_get_id = perf_stat__get_socket_cached;
2068 break;
2069 case AGGR_CORE:
2070 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
2071 perror("cannot build core map");
2072 return -1;
2073 }
2074 aggr_get_id = perf_stat__get_core_cached;
2075 break;
2076 case AGGR_NONE:
2077 case AGGR_GLOBAL:
2078 case AGGR_THREAD:
2079 case AGGR_UNSET:
2080 default:
2081 break;
2082 }
2083
2084 /*
2085 * The evsel_list->cpus is the base we operate on,
2086 * taking the highest cpu number to be the size of
2087 * the aggregation translate cpumap.
2088 */
2089 nr = cpu_map__get_max(evsel_list->cpus);
2090 cpus_aggr_map = cpu_map__empty_new(nr + 1);
2091 return cpus_aggr_map ? 0 : -ENOMEM;
2092}
2093
2094static void perf_stat__exit_aggr_mode(void)
2095{
2096 cpu_map__put(aggr_map);
2097 cpu_map__put(cpus_aggr_map);
2098 aggr_map = NULL;
2099 cpus_aggr_map = NULL;
2100}
2101
2102static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
2103{
2104 int cpu;
2105
2106 if (idx > map->nr)
2107 return -1;
2108
2109 cpu = map->map[idx];
2110
2111 if (cpu >= env->nr_cpus_avail)
2112 return -1;
2113
2114 return cpu;
2115}
2116
2117static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
2118{
2119 struct perf_env *env = data;
2120 int cpu = perf_env__get_cpu(env, map, idx);
2121
2122 return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
2123}
2124
2125static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
2126{
2127 struct perf_env *env = data;
2128 int core = -1, cpu = perf_env__get_cpu(env, map, idx);
2129
2130 if (cpu != -1) {
2131 int socket_id = env->cpu[cpu].socket_id;
2132
2133 /*
2134 * Encode socket in upper 16 bits
2135 * core_id is relative to socket, and
2136 * we need a global id. So we combine
2137 * socket + core id.
2138 */
2139 core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
2140 }
2141
2142 return core;
2143}
2144
2145static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
2146 struct cpu_map **sockp)
2147{
2148 return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
2149}
2150
2151static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
2152 struct cpu_map **corep)
2153{
2154 return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
2155}
2156
2157static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
2158{
2159 return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
2160}
2161
2162static int perf_stat__get_core_file(struct cpu_map *map, int idx)
2163{
2164 return perf_env__get_core(map, idx, &perf_stat.session->header.env);
2165}
2166
2167static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
2168{
2169 struct perf_env *env = &st->session->header.env;
2170
2171 switch (stat_config.aggr_mode) {
2172 case AGGR_SOCKET:
2173 if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
2174 perror("cannot build socket map");
2175 return -1;
2176 }
2177 aggr_get_id = perf_stat__get_socket_file;
2178 break;
2179 case AGGR_CORE:
2180 if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
2181 perror("cannot build core map");
2182 return -1;
2183 }
2184 aggr_get_id = perf_stat__get_core_file;
2185 break;
2186 case AGGR_NONE:
2187 case AGGR_GLOBAL:
2188 case AGGR_THREAD:
2189 case AGGR_UNSET:
2190 default:
2191 break;
2192 }
2193
2194 return 0;
2195}
2196
2197static int topdown_filter_events(const char **attr, char **str, bool use_group)
2198{
2199 int off = 0;
2200 int i;
2201 int len = 0;
2202 char *s;
2203
2204 for (i = 0; attr[i]; i++) {
2205 if (pmu_have_event("cpu", attr[i])) {
2206 len += strlen(attr[i]) + 1;
2207 attr[i - off] = attr[i];
2208 } else
2209 off++;
2210 }
2211 attr[i - off] = NULL;
2212
2213 *str = malloc(len + 1 + 2);
2214 if (!*str)
2215 return -1;
2216 s = *str;
2217 if (i - off == 0) {
2218 *s = 0;
2219 return 0;
2220 }
2221 if (use_group)
2222 *s++ = '{';
2223 for (i = 0; attr[i]; i++) {
2224 strcpy(s, attr[i]);
2225 s += strlen(s);
2226 *s++ = ',';
2227 }
2228 if (use_group) {
2229 s[-1] = '}';
2230 *s = 0;
2231 } else
2232 s[-1] = 0;
2233 return 0;
2234}
2235
2236__weak bool arch_topdown_check_group(bool *warn)
2237{
2238 *warn = false;
2239 return false;
2240}
2241
2242__weak void arch_topdown_group_warn(void)
2243{
2244}
2245
2246/*
2247 * Add default attributes, if there were no attributes specified or
2248 * if -d/--detailed, -d -d or -d -d -d is used:
2249 */
2250static int add_default_attributes(void)
2251{
2252 int err;
2253 struct perf_event_attr default_attrs0[] = {
2254
2255 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
2256 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
2257 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
2258 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
2259
2260 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
2261};
2262 struct perf_event_attr frontend_attrs[] = {
2263 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
2264};
2265 struct perf_event_attr backend_attrs[] = {
2266 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
2267};
2268 struct perf_event_attr default_attrs1[] = {
2269 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
2270 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
2271 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
2272
2273};
2274
2275/*
2276 * Detailed stats (-d), covering the L1 and last level data caches:
2277 */
2278 struct perf_event_attr detailed_attrs[] = {
2279
2280 { .type = PERF_TYPE_HW_CACHE,
2281 .config =
2282 PERF_COUNT_HW_CACHE_L1D << 0 |
2283 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2284 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2285
2286 { .type = PERF_TYPE_HW_CACHE,
2287 .config =
2288 PERF_COUNT_HW_CACHE_L1D << 0 |
2289 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2290 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2291
2292 { .type = PERF_TYPE_HW_CACHE,
2293 .config =
2294 PERF_COUNT_HW_CACHE_LL << 0 |
2295 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2296 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2297
2298 { .type = PERF_TYPE_HW_CACHE,
2299 .config =
2300 PERF_COUNT_HW_CACHE_LL << 0 |
2301 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2302 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2303};
2304
2305/*
2306 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
2307 */
2308 struct perf_event_attr very_detailed_attrs[] = {
2309
2310 { .type = PERF_TYPE_HW_CACHE,
2311 .config =
2312 PERF_COUNT_HW_CACHE_L1I << 0 |
2313 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2314 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2315
2316 { .type = PERF_TYPE_HW_CACHE,
2317 .config =
2318 PERF_COUNT_HW_CACHE_L1I << 0 |
2319 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2320 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2321
2322 { .type = PERF_TYPE_HW_CACHE,
2323 .config =
2324 PERF_COUNT_HW_CACHE_DTLB << 0 |
2325 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2326 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2327
2328 { .type = PERF_TYPE_HW_CACHE,
2329 .config =
2330 PERF_COUNT_HW_CACHE_DTLB << 0 |
2331 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2332 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2333
2334 { .type = PERF_TYPE_HW_CACHE,
2335 .config =
2336 PERF_COUNT_HW_CACHE_ITLB << 0 |
2337 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2338 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2339
2340 { .type = PERF_TYPE_HW_CACHE,
2341 .config =
2342 PERF_COUNT_HW_CACHE_ITLB << 0 |
2343 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
2344 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2345
2346};
2347
2348/*
2349 * Very, very detailed stats (-d -d -d), adding prefetch events:
2350 */
2351 struct perf_event_attr very_very_detailed_attrs[] = {
2352
2353 { .type = PERF_TYPE_HW_CACHE,
2354 .config =
2355 PERF_COUNT_HW_CACHE_L1D << 0 |
2356 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2357 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
2358
2359 { .type = PERF_TYPE_HW_CACHE,
2360 .config =
2361 PERF_COUNT_HW_CACHE_L1D << 0 |
2362 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
2363 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
2364};
2365
2366 /* Set attrs if no event is selected and !null_run: */
2367 if (null_run)
2368 return 0;
2369
2370 if (transaction_run) {
2371 struct parse_events_error errinfo;
2372
2373 if (pmu_have_event("cpu", "cycles-ct") &&
2374 pmu_have_event("cpu", "el-start"))
2375 err = parse_events(evsel_list, transaction_attrs,
2376 &errinfo);
2377 else
2378 err = parse_events(evsel_list,
2379 transaction_limited_attrs,
2380 &errinfo);
2381 if (err) {
2382 fprintf(stderr, "Cannot set up transaction events\n");
2383 return -1;
2384 }
2385 return 0;
2386 }
2387
2388 if (smi_cost) {
2389 int smi;
2390
2391 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
2392 fprintf(stderr, "freeze_on_smi is not supported.\n");
2393 return -1;
2394 }
2395
2396 if (!smi) {
2397 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
2398 fprintf(stderr, "Failed to set freeze_on_smi.\n");
2399 return -1;
2400 }
2401 smi_reset = true;
2402 }
2403
2404 if (pmu_have_event("msr", "aperf") &&
2405 pmu_have_event("msr", "smi")) {
2406 if (!force_metric_only)
2407 metric_only = true;
2408 err = parse_events(evsel_list, smi_cost_attrs, NULL);
2409 } else {
2410 fprintf(stderr, "To measure SMI cost, it needs "
2411 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
2412 return -1;
2413 }
2414 if (err) {
2415 fprintf(stderr, "Cannot set up SMI cost events\n");
2416 return -1;
2417 }
2418 return 0;
2419 }
2420
2421 if (topdown_run) {
2422 char *str = NULL;
2423 bool warn = false;
2424
2425 if (stat_config.aggr_mode != AGGR_GLOBAL &&
2426 stat_config.aggr_mode != AGGR_CORE) {
2427 pr_err("top down event configuration requires --per-core mode\n");
2428 return -1;
2429 }
2430 stat_config.aggr_mode = AGGR_CORE;
2431 if (nr_cgroups || !target__has_cpu(&target)) {
2432 pr_err("top down event configuration requires system-wide mode (-a)\n");
2433 return -1;
2434 }
2435
2436 if (!force_metric_only)
2437 metric_only = true;
2438 if (topdown_filter_events(topdown_attrs, &str,
2439 arch_topdown_check_group(&warn)) < 0) {
2440 pr_err("Out of memory\n");
2441 return -1;
2442 }
2443 if (topdown_attrs[0] && str) {
2444 if (warn)
2445 arch_topdown_group_warn();
2446 err = parse_events(evsel_list, str, NULL);
2447 if (err) {
2448 fprintf(stderr,
2449 "Cannot set up top down events %s: %d\n",
2450 str, err);
2451 free(str);
2452 return -1;
2453 }
2454 } else {
2455 fprintf(stderr, "System does not support topdown\n");
2456 return -1;
2457 }
2458 free(str);
2459 }
2460
2461 if (!evsel_list->nr_entries) {
2462 if (target__has_cpu(&target))
2463 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
2464
2465 if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2466 return -1;
2467 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
2468 if (perf_evlist__add_default_attrs(evsel_list,
2469 frontend_attrs) < 0)
2470 return -1;
2471 }
2472 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
2473 if (perf_evlist__add_default_attrs(evsel_list,
2474 backend_attrs) < 0)
2475 return -1;
2476 }
2477 if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2478 return -1;
2479 }
2480
2481 /* Detailed events get appended to the event list: */
2482
2483 if (detailed_run < 1)
2484 return 0;
2485
2486 /* Append detailed run extra attributes: */
2487 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2488 return -1;
2489
2490 if (detailed_run < 2)
2491 return 0;
2492
2493 /* Append very detailed run extra attributes: */
2494 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2495 return -1;
2496
2497 if (detailed_run < 3)
2498 return 0;
2499
2500 /* Append very, very detailed run extra attributes: */
2501 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2502}
2503
2504static const char * const stat_record_usage[] = {
2505 "perf stat record [<options>]",
2506 NULL,
2507};
2508
2509static void init_features(struct perf_session *session)
2510{
2511 int feat;
2512
2513 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2514 perf_header__set_feat(&session->header, feat);
2515
2516 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2517 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2518 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2519 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2520}
2521
2522static int __cmd_record(int argc, const char **argv)
2523{
2524 struct perf_session *session;
2525 struct perf_data *data = &perf_stat.data;
2526
2527 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2528 PARSE_OPT_STOP_AT_NON_OPTION);
2529
2530 if (output_name)
2531 data->file.path = output_name;
2532
2533 if (run_count != 1 || forever) {
2534 pr_err("Cannot use -r option with perf stat record.\n");
2535 return -1;
2536 }
2537
2538 session = perf_session__new(data, false, NULL);
2539 if (session == NULL) {
2540 pr_err("Perf session creation failed.\n");
2541 return -1;
2542 }
2543
2544 init_features(session);
2545
2546 session->evlist = evsel_list;
2547 perf_stat.session = session;
2548 perf_stat.record = true;
2549 return argc;
2550}
2551
2552static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
2553 union perf_event *event,
2554 struct perf_session *session)
2555{
2556 struct stat_round_event *stat_round = &event->stat_round;
2557 struct perf_evsel *counter;
2558 struct timespec tsh, *ts = NULL;
2559 const char **argv = session->header.env.cmdline_argv;
2560 int argc = session->header.env.nr_cmdline;
2561
2562 evlist__for_each_entry(evsel_list, counter)
2563 perf_stat_process_counter(&stat_config, counter);
2564
2565 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2566 update_stats(&walltime_nsecs_stats, stat_round->time);
2567
2568 if (stat_config.interval && stat_round->time) {
2569 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2570 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2571 ts = &tsh;
2572 }
2573
2574 print_counters(ts, argc, argv);
2575 return 0;
2576}
2577
2578static
2579int process_stat_config_event(struct perf_tool *tool,
2580 union perf_event *event,
2581 struct perf_session *session __maybe_unused)
2582{
2583 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2584
2585 perf_event__read_stat_config(&stat_config, &event->stat_config);
2586
2587 if (cpu_map__empty(st->cpus)) {
2588 if (st->aggr_mode != AGGR_UNSET)
2589 pr_warning("warning: processing task data, aggregation mode not set\n");
2590 return 0;
2591 }
2592
2593 if (st->aggr_mode != AGGR_UNSET)
2594 stat_config.aggr_mode = st->aggr_mode;
2595
2596 if (perf_stat.data.is_pipe)
2597 perf_stat_init_aggr_mode();
2598 else
2599 perf_stat_init_aggr_mode_file(st);
2600
2601 return 0;
2602}
2603
2604static int set_maps(struct perf_stat *st)
2605{
2606 if (!st->cpus || !st->threads)
2607 return 0;
2608
2609 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2610 return -EINVAL;
2611
2612 perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
2613
2614 if (perf_evlist__alloc_stats(evsel_list, true))
2615 return -ENOMEM;
2616
2617 st->maps_allocated = true;
2618 return 0;
2619}
2620
2621static
2622int process_thread_map_event(struct perf_tool *tool,
2623 union perf_event *event,
2624 struct perf_session *session __maybe_unused)
2625{
2626 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2627
2628 if (st->threads) {
2629 pr_warning("Extra thread map event, ignoring.\n");
2630 return 0;
2631 }
2632
2633 st->threads = thread_map__new_event(&event->thread_map);
2634 if (!st->threads)
2635 return -ENOMEM;
2636
2637 return set_maps(st);
2638}
2639
2640static
2641int process_cpu_map_event(struct perf_tool *tool,
2642 union perf_event *event,
2643 struct perf_session *session __maybe_unused)
2644{
2645 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2646 struct cpu_map *cpus;
2647
2648 if (st->cpus) {
2649 pr_warning("Extra cpu map event, ignoring.\n");
2650 return 0;
2651 }
2652
2653 cpus = cpu_map__new_data(&event->cpu_map.data);
2654 if (!cpus)
2655 return -ENOMEM;
2656
2657 st->cpus = cpus;
2658 return set_maps(st);
2659}
2660
2661static int runtime_stat_new(struct perf_stat_config *config, int nthreads)
2662{
2663 int i;
2664
2665 config->stats = calloc(nthreads, sizeof(struct runtime_stat));
2666 if (!config->stats)
2667 return -1;
2668
2669 config->stats_num = nthreads;
2670
2671 for (i = 0; i < nthreads; i++)
2672 runtime_stat__init(&config->stats[i]);
2673
2674 return 0;
2675}
2676
2677static void runtime_stat_delete(struct perf_stat_config *config)
2678{
2679 int i;
2680
2681 if (!config->stats)
2682 return;
2683
2684 for (i = 0; i < config->stats_num; i++)
2685 runtime_stat__exit(&config->stats[i]);
2686
2687 free(config->stats);
2688}
2689
2690static const char * const stat_report_usage[] = {
2691 "perf stat report [<options>]",
2692 NULL,
2693};
2694
2695static struct perf_stat perf_stat = {
2696 .tool = {
2697 .attr = perf_event__process_attr,
2698 .event_update = perf_event__process_event_update,
2699 .thread_map = process_thread_map_event,
2700 .cpu_map = process_cpu_map_event,
2701 .stat_config = process_stat_config_event,
2702 .stat = perf_event__process_stat_event,
2703 .stat_round = process_stat_round_event,
2704 },
2705 .aggr_mode = AGGR_UNSET,
2706};
2707
2708static int __cmd_report(int argc, const char **argv)
2709{
2710 struct perf_session *session;
2711 const struct option options[] = {
2712 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2713 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2714 "aggregate counts per processor socket", AGGR_SOCKET),
2715 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2716 "aggregate counts per physical processor core", AGGR_CORE),
2717 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2718 "disable CPU count aggregation", AGGR_NONE),
2719 OPT_END()
2720 };
2721 struct stat st;
2722 int ret;
2723
2724 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2725
2726 if (!input_name || !strlen(input_name)) {
2727 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2728 input_name = "-";
2729 else
2730 input_name = "perf.data";
2731 }
2732
2733 perf_stat.data.file.path = input_name;
2734 perf_stat.data.mode = PERF_DATA_MODE_READ;
2735
2736 session = perf_session__new(&perf_stat.data, false, &perf_stat.tool);
2737 if (session == NULL)
2738 return -1;
2739
2740 perf_stat.session = session;
2741 stat_config.output = stderr;
2742 evsel_list = session->evlist;
2743
2744 ret = perf_session__process_events(session);
2745 if (ret)
2746 return ret;
2747
2748 perf_session__delete(session);
2749 return 0;
2750}
2751
2752static void setup_system_wide(int forks)
2753{
2754 /*
2755 * Make system wide (-a) the default target if
2756 * no target was specified and one of following
2757 * conditions is met:
2758 *
2759 * - there's no workload specified
2760 * - there is workload specified but all requested
2761 * events are system wide events
2762 */
2763 if (!target__none(&target))
2764 return;
2765
2766 if (!forks)
2767 target.system_wide = true;
2768 else {
2769 struct perf_evsel *counter;
2770
2771 evlist__for_each_entry(evsel_list, counter) {
2772 if (!counter->system_wide)
2773 return;
2774 }
2775
2776 if (evsel_list->nr_entries)
2777 target.system_wide = true;
2778 }
2779}
2780
2781int cmd_stat(int argc, const char **argv)
2782{
2783 const char * const stat_usage[] = {
2784 "perf stat [<options>] [<command>]",
2785 NULL
2786 };
2787 int status = -EINVAL, run_idx;
2788 const char *mode;
2789 FILE *output = stderr;
2790 unsigned int interval, timeout;
2791 const char * const stat_subcommands[] = { "record", "report" };
2792
2793 setlocale(LC_ALL, "");
2794
2795 evsel_list = perf_evlist__new();
2796 if (evsel_list == NULL)
2797 return -ENOMEM;
2798
2799 parse_events__shrink_config_terms();
2800 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2801 (const char **) stat_usage,
2802 PARSE_OPT_STOP_AT_NON_OPTION);
2803 perf_stat__collect_metric_expr(evsel_list);
2804 perf_stat__init_shadow_stats();
2805
2806 if (csv_sep) {
2807 csv_output = true;
2808 if (!strcmp(csv_sep, "\\t"))
2809 csv_sep = "\t";
2810 } else
2811 csv_sep = DEFAULT_SEPARATOR;
2812
2813 if (argc && !strncmp(argv[0], "rec", 3)) {
2814 argc = __cmd_record(argc, argv);
2815 if (argc < 0)
2816 return -1;
2817 } else if (argc && !strncmp(argv[0], "rep", 3))
2818 return __cmd_report(argc, argv);
2819
2820 interval = stat_config.interval;
2821 timeout = stat_config.timeout;
2822
2823 /*
2824 * For record command the -o is already taken care of.
2825 */
2826 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2827 output = NULL;
2828
2829 if (output_name && output_fd) {
2830 fprintf(stderr, "cannot use both --output and --log-fd\n");
2831 parse_options_usage(stat_usage, stat_options, "o", 1);
2832 parse_options_usage(NULL, stat_options, "log-fd", 0);
2833 goto out;
2834 }
2835
2836 if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2837 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2838 goto out;
2839 }
2840
2841 if (metric_only && run_count > 1) {
2842 fprintf(stderr, "--metric-only is not supported with -r\n");
2843 goto out;
2844 }
2845
2846 if (output_fd < 0) {
2847 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2848 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2849 goto out;
2850 }
2851
2852 if (!output) {
2853 struct timespec tm;
2854 mode = append_file ? "a" : "w";
2855
2856 output = fopen(output_name, mode);
2857 if (!output) {
2858 perror("failed to create output file");
2859 return -1;
2860 }
2861 clock_gettime(CLOCK_REALTIME, &tm);
2862 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2863 } else if (output_fd > 0) {
2864 mode = append_file ? "a" : "w";
2865 output = fdopen(output_fd, mode);
2866 if (!output) {
2867 perror("Failed opening logfd");
2868 return -errno;
2869 }
2870 }
2871
2872 stat_config.output = output;
2873
2874 /*
2875 * let the spreadsheet do the pretty-printing
2876 */
2877 if (csv_output) {
2878 /* User explicitly passed -B? */
2879 if (big_num_opt == 1) {
2880 fprintf(stderr, "-B option not supported with -x\n");
2881 parse_options_usage(stat_usage, stat_options, "B", 1);
2882 parse_options_usage(NULL, stat_options, "x", 1);
2883 goto out;
2884 } else /* Nope, so disable big number formatting */
2885 big_num = false;
2886 } else if (big_num_opt == 0) /* User passed --no-big-num */
2887 big_num = false;
2888
2889 setup_system_wide(argc);
2890
2891 if (run_count < 0) {
2892 pr_err("Run count must be a positive number\n");
2893 parse_options_usage(stat_usage, stat_options, "r", 1);
2894 goto out;
2895 } else if (run_count == 0) {
2896 forever = true;
2897 run_count = 1;
2898 }
2899
2900 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2901 !target__has_task(&target)) {
2902 if (!target.system_wide || target.cpu_list) {
2903 fprintf(stderr, "The --per-thread option is only "
2904 "available when monitoring via -p -t -a "
2905 "options or only --per-thread.\n");
2906 parse_options_usage(NULL, stat_options, "p", 1);
2907 parse_options_usage(NULL, stat_options, "t", 1);
2908 goto out;
2909 }
2910 }
2911
2912 /*
2913 * no_aggr, cgroup are for system-wide only
2914 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2915 */
2916 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2917 stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2918 !target__has_cpu(&target)) {
2919 fprintf(stderr, "both cgroup and no-aggregation "
2920 "modes only available in system-wide mode\n");
2921
2922 parse_options_usage(stat_usage, stat_options, "G", 1);
2923 parse_options_usage(NULL, stat_options, "A", 1);
2924 parse_options_usage(NULL, stat_options, "a", 1);
2925 goto out;
2926 }
2927
2928 if (add_default_attributes())
2929 goto out;
2930
2931 target__validate(&target);
2932
2933 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2934 target.per_thread = true;
2935
2936 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
2937 if (target__has_task(&target)) {
2938 pr_err("Problems finding threads of monitor\n");
2939 parse_options_usage(stat_usage, stat_options, "p", 1);
2940 parse_options_usage(NULL, stat_options, "t", 1);
2941 } else if (target__has_cpu(&target)) {
2942 perror("failed to parse CPUs map");
2943 parse_options_usage(stat_usage, stat_options, "C", 1);
2944 parse_options_usage(NULL, stat_options, "a", 1);
2945 }
2946 goto out;
2947 }
2948
2949 /*
2950 * Initialize thread_map with comm names,
2951 * so we could print it out on output.
2952 */
2953 if (stat_config.aggr_mode == AGGR_THREAD) {
2954 thread_map__read_comms(evsel_list->threads);
2955 if (target.system_wide) {
2956 if (runtime_stat_new(&stat_config,
2957 thread_map__nr(evsel_list->threads))) {
2958 goto out;
2959 }
2960 }
2961 }
2962
2963 if (stat_config.times && interval)
2964 interval_count = true;
2965 else if (stat_config.times && !interval) {
2966 pr_err("interval-count option should be used together with "
2967 "interval-print.\n");
2968 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2969 parse_options_usage(stat_usage, stat_options, "I", 1);
2970 goto out;
2971 }
2972
2973 if (timeout && timeout < 100) {
2974 if (timeout < 10) {
2975 pr_err("timeout must be >= 10ms.\n");
2976 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2977 goto out;
2978 } else
2979 pr_warning("timeout < 100ms. "
2980 "The overhead percentage could be high in some cases. "
2981 "Please proceed with caution.\n");
2982 }
2983 if (timeout && interval) {
2984 pr_err("timeout option is not supported with interval-print.\n");
2985 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2986 parse_options_usage(stat_usage, stat_options, "I", 1);
2987 goto out;
2988 }
2989
2990 if (perf_evlist__alloc_stats(evsel_list, interval))
2991 goto out;
2992
2993 if (perf_stat_init_aggr_mode())
2994 goto out;
2995
2996 /*
2997 * We dont want to block the signals - that would cause
2998 * child tasks to inherit that and Ctrl-C would not work.
2999 * What we want is for Ctrl-C to work in the exec()-ed
3000 * task, but being ignored by perf stat itself:
3001 */
3002 atexit(sig_atexit);
3003 if (!forever)
3004 signal(SIGINT, skip_signal);
3005 signal(SIGCHLD, skip_signal);
3006 signal(SIGALRM, skip_signal);
3007 signal(SIGABRT, skip_signal);
3008
3009 status = 0;
3010 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
3011 if (run_count != 1 && verbose > 0)
3012 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
3013 run_idx + 1);
3014
3015 status = run_perf_stat(argc, argv);
3016 if (forever && status != -1) {
3017 print_counters(NULL, argc, argv);
3018 perf_stat__reset_stats();
3019 }
3020 }
3021
3022 if (!forever && status != -1 && !interval)
3023 print_counters(NULL, argc, argv);
3024
3025 if (STAT_RECORD) {
3026 /*
3027 * We synthesize the kernel mmap record just so that older tools
3028 * don't emit warnings about not being able to resolve symbols
3029 * due to /proc/sys/kernel/kptr_restrict settings and instear provide
3030 * a saner message about no samples being in the perf.data file.
3031 *
3032 * This also serves to suppress a warning about f_header.data.size == 0
3033 * in header.c at the moment 'perf stat record' gets introduced, which
3034 * is not really needed once we start adding the stat specific PERF_RECORD_
3035 * records, but the need to suppress the kptr_restrict messages in older
3036 * tools remain -acme
3037 */
3038 int fd = perf_data__fd(&perf_stat.data);
3039 int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
3040 process_synthesized_event,
3041 &perf_stat.session->machines.host);
3042 if (err) {
3043 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
3044 "older tools may produce warnings about this file\n.");
3045 }
3046
3047 if (!interval) {
3048 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
3049 pr_err("failed to write stat round event\n");
3050 }
3051
3052 if (!perf_stat.data.is_pipe) {
3053 perf_stat.session->header.data_size += perf_stat.bytes_written;
3054 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
3055 }
3056
3057 perf_session__delete(perf_stat.session);
3058 }
3059
3060 perf_stat__exit_aggr_mode();
3061 perf_evlist__free_stats(evsel_list);
3062out:
3063 if (smi_cost && smi_reset)
3064 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
3065
3066 perf_evlist__delete(evsel_list);
3067
3068 runtime_stat_delete(&stat_config);
3069
3070 return status;
3071}