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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/tool_pmu.h"
50#include "util/event.h"
51#include "util/evlist.h"
52#include "util/evsel.h"
53#include "util/debug.h"
54#include "util/color.h"
55#include "util/stat.h"
56#include "util/header.h"
57#include "util/cpumap.h"
58#include "util/thread_map.h"
59#include "util/counts.h"
60#include "util/topdown.h"
61#include "util/session.h"
62#include "util/tool.h"
63#include "util/string2.h"
64#include "util/metricgroup.h"
65#include "util/synthetic-events.h"
66#include "util/target.h"
67#include "util/time-utils.h"
68#include "util/top.h"
69#include "util/affinity.h"
70#include "util/pfm.h"
71#include "util/bpf_counter.h"
72#include "util/iostat.h"
73#include "util/util.h"
74#include "util/intel-tpebs.h"
75#include "asm/bug.h"
76
77#include <linux/time64.h>
78#include <linux/zalloc.h>
79#include <api/fs/fs.h>
80#include <errno.h>
81#include <signal.h>
82#include <stdlib.h>
83#include <sys/prctl.h>
84#include <inttypes.h>
85#include <locale.h>
86#include <math.h>
87#include <sys/types.h>
88#include <sys/stat.h>
89#include <sys/wait.h>
90#include <unistd.h>
91#include <sys/time.h>
92#include <sys/resource.h>
93#include <linux/err.h>
94
95#include <linux/ctype.h>
96#include <perf/evlist.h>
97#include <internal/threadmap.h>
98
99#define DEFAULT_SEPARATOR " "
100#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
101
102static void print_counters(struct timespec *ts, int argc, const char **argv);
103
104static struct evlist *evsel_list;
105static struct parse_events_option_args parse_events_option_args = {
106 .evlistp = &evsel_list,
107};
108
109static bool all_counters_use_bpf = true;
110
111static struct target target = {
112 .uid = UINT_MAX,
113};
114
115#define METRIC_ONLY_LEN 20
116
117static volatile sig_atomic_t child_pid = -1;
118static int detailed_run = 0;
119static bool transaction_run;
120static bool topdown_run = false;
121static bool smi_cost = false;
122static bool smi_reset = false;
123static int big_num_opt = -1;
124static const char *pre_cmd = NULL;
125static const char *post_cmd = NULL;
126static bool sync_run = false;
127static bool forever = false;
128static bool force_metric_only = false;
129static struct timespec ref_time;
130static bool append_file;
131static bool interval_count;
132static const char *output_name;
133static int output_fd;
134static char *metrics;
135
136struct perf_stat {
137 bool record;
138 struct perf_data data;
139 struct perf_session *session;
140 u64 bytes_written;
141 struct perf_tool tool;
142 bool maps_allocated;
143 struct perf_cpu_map *cpus;
144 struct perf_thread_map *threads;
145 enum aggr_mode aggr_mode;
146 u32 aggr_level;
147};
148
149static struct perf_stat perf_stat;
150#define STAT_RECORD perf_stat.record
151
152static volatile sig_atomic_t done = 0;
153
154static struct perf_stat_config stat_config = {
155 .aggr_mode = AGGR_GLOBAL,
156 .aggr_level = MAX_CACHE_LVL + 1,
157 .scale = true,
158 .unit_width = 4, /* strlen("unit") */
159 .run_count = 1,
160 .metric_only_len = METRIC_ONLY_LEN,
161 .walltime_nsecs_stats = &walltime_nsecs_stats,
162 .ru_stats = &ru_stats,
163 .big_num = true,
164 .ctl_fd = -1,
165 .ctl_fd_ack = -1,
166 .iostat_run = false,
167};
168
169/* Options set from the command line. */
170struct opt_aggr_mode {
171 bool node, socket, die, cluster, cache, core, thread, no_aggr;
172};
173
174/* Turn command line option into most generic aggregation mode setting. */
175static enum aggr_mode opt_aggr_mode_to_aggr_mode(struct opt_aggr_mode *opt_mode)
176{
177 enum aggr_mode mode = AGGR_GLOBAL;
178
179 if (opt_mode->node)
180 mode = AGGR_NODE;
181 if (opt_mode->socket)
182 mode = AGGR_SOCKET;
183 if (opt_mode->die)
184 mode = AGGR_DIE;
185 if (opt_mode->cluster)
186 mode = AGGR_CLUSTER;
187 if (opt_mode->cache)
188 mode = AGGR_CACHE;
189 if (opt_mode->core)
190 mode = AGGR_CORE;
191 if (opt_mode->thread)
192 mode = AGGR_THREAD;
193 if (opt_mode->no_aggr)
194 mode = AGGR_NONE;
195 return mode;
196}
197
198static void evlist__check_cpu_maps(struct evlist *evlist)
199{
200 struct evsel *evsel, *warned_leader = NULL;
201
202 evlist__for_each_entry(evlist, evsel) {
203 struct evsel *leader = evsel__leader(evsel);
204
205 /* Check that leader matches cpus with each member. */
206 if (leader == evsel)
207 continue;
208 if (perf_cpu_map__equal(leader->core.cpus, evsel->core.cpus))
209 continue;
210
211 /* If there's mismatch disable the group and warn user. */
212 if (warned_leader != leader) {
213 char buf[200];
214
215 pr_warning("WARNING: grouped events cpus do not match.\n"
216 "Events with CPUs not matching the leader will "
217 "be removed from the group.\n");
218 evsel__group_desc(leader, buf, sizeof(buf));
219 pr_warning(" %s\n", buf);
220 warned_leader = leader;
221 }
222 if (verbose > 0) {
223 char buf[200];
224
225 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
226 pr_warning(" %s: %s\n", leader->name, buf);
227 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
228 pr_warning(" %s: %s\n", evsel->name, buf);
229 }
230
231 evsel__remove_from_group(evsel, leader);
232 }
233}
234
235static inline void diff_timespec(struct timespec *r, struct timespec *a,
236 struct timespec *b)
237{
238 r->tv_sec = a->tv_sec - b->tv_sec;
239 if (a->tv_nsec < b->tv_nsec) {
240 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
241 r->tv_sec--;
242 } else {
243 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
244 }
245}
246
247static void perf_stat__reset_stats(void)
248{
249 evlist__reset_stats(evsel_list);
250 perf_stat__reset_shadow_stats();
251}
252
253static int process_synthesized_event(const struct perf_tool *tool __maybe_unused,
254 union perf_event *event,
255 struct perf_sample *sample __maybe_unused,
256 struct machine *machine __maybe_unused)
257{
258 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
259 pr_err("failed to write perf data, error: %m\n");
260 return -1;
261 }
262
263 perf_stat.bytes_written += event->header.size;
264 return 0;
265}
266
267static int write_stat_round_event(u64 tm, u64 type)
268{
269 return perf_event__synthesize_stat_round(NULL, tm, type,
270 process_synthesized_event,
271 NULL);
272}
273
274#define WRITE_STAT_ROUND_EVENT(time, interval) \
275 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
276
277#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
278
279static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,
280 struct perf_counts_values *count)
281{
282 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
283 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
284
285 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
286 process_synthesized_event, NULL);
287}
288
289static int read_single_counter(struct evsel *counter, int cpu_map_idx, int thread)
290{
291 int err = evsel__read_counter(counter, cpu_map_idx, thread);
292
293 /*
294 * Reading user and system time will fail when the process
295 * terminates. Use the wait4 values in that case.
296 */
297 if (err && cpu_map_idx == 0 &&
298 (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME ||
299 evsel__tool_event(counter) == TOOL_PMU__EVENT_SYSTEM_TIME)) {
300 u64 val, *start_time;
301 struct perf_counts_values *count =
302 perf_counts(counter->counts, cpu_map_idx, thread);
303
304 start_time = xyarray__entry(counter->start_times, cpu_map_idx, thread);
305 if (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME)
306 val = ru_stats.ru_utime_usec_stat.mean;
307 else
308 val = ru_stats.ru_stime_usec_stat.mean;
309 count->ena = count->run = *start_time + val;
310 count->val = val;
311 return 0;
312 }
313 return err;
314}
315
316/*
317 * Read out the results of a single counter:
318 * do not aggregate counts across CPUs in system-wide mode
319 */
320static int read_counter_cpu(struct evsel *counter, int cpu_map_idx)
321{
322 int nthreads = perf_thread_map__nr(evsel_list->core.threads);
323 int thread;
324
325 if (!counter->supported)
326 return -ENOENT;
327
328 for (thread = 0; thread < nthreads; thread++) {
329 struct perf_counts_values *count;
330
331 count = perf_counts(counter->counts, cpu_map_idx, thread);
332
333 /*
334 * The leader's group read loads data into its group members
335 * (via evsel__read_counter()) and sets their count->loaded.
336 */
337 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&
338 read_single_counter(counter, cpu_map_idx, thread)) {
339 counter->counts->scaled = -1;
340 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
341 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
342 return -1;
343 }
344
345 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
346
347 if (STAT_RECORD) {
348 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {
349 pr_err("failed to write stat event\n");
350 return -1;
351 }
352 }
353
354 if (verbose > 1) {
355 fprintf(stat_config.output,
356 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
357 evsel__name(counter),
358 perf_cpu_map__cpu(evsel__cpus(counter),
359 cpu_map_idx).cpu,
360 count->val, count->ena, count->run);
361 }
362 }
363
364 return 0;
365}
366
367static int read_affinity_counters(void)
368{
369 struct evlist_cpu_iterator evlist_cpu_itr;
370 struct affinity saved_affinity, *affinity;
371
372 if (all_counters_use_bpf)
373 return 0;
374
375 if (!target__has_cpu(&target) || target__has_per_thread(&target))
376 affinity = NULL;
377 else if (affinity__setup(&saved_affinity) < 0)
378 return -1;
379 else
380 affinity = &saved_affinity;
381
382 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
383 struct evsel *counter = evlist_cpu_itr.evsel;
384
385 if (evsel__is_bpf(counter))
386 continue;
387
388 if (!counter->err)
389 counter->err = read_counter_cpu(counter, evlist_cpu_itr.cpu_map_idx);
390 }
391 if (affinity)
392 affinity__cleanup(&saved_affinity);
393
394 return 0;
395}
396
397static int read_bpf_map_counters(void)
398{
399 struct evsel *counter;
400 int err;
401
402 evlist__for_each_entry(evsel_list, counter) {
403 if (!evsel__is_bpf(counter))
404 continue;
405
406 err = bpf_counter__read(counter);
407 if (err)
408 return err;
409 }
410 return 0;
411}
412
413static int read_counters(void)
414{
415 if (!stat_config.stop_read_counter) {
416 if (read_bpf_map_counters() ||
417 read_affinity_counters())
418 return -1;
419 }
420 return 0;
421}
422
423static void process_counters(void)
424{
425 struct evsel *counter;
426
427 evlist__for_each_entry(evsel_list, counter) {
428 if (counter->err)
429 pr_debug("failed to read counter %s\n", counter->name);
430 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
431 pr_warning("failed to process counter %s\n", counter->name);
432 counter->err = 0;
433 }
434
435 perf_stat_merge_counters(&stat_config, evsel_list);
436 perf_stat_process_percore(&stat_config, evsel_list);
437}
438
439static void process_interval(void)
440{
441 struct timespec ts, rs;
442
443 clock_gettime(CLOCK_MONOTONIC, &ts);
444 diff_timespec(&rs, &ts, &ref_time);
445
446 evlist__reset_aggr_stats(evsel_list);
447
448 if (read_counters() == 0)
449 process_counters();
450
451 if (STAT_RECORD) {
452 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
453 pr_err("failed to write stat round event\n");
454 }
455
456 init_stats(&walltime_nsecs_stats);
457 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
458 print_counters(&rs, 0, NULL);
459}
460
461static bool handle_interval(unsigned int interval, int *times)
462{
463 if (interval) {
464 process_interval();
465 if (interval_count && !(--(*times)))
466 return true;
467 }
468 return false;
469}
470
471static int enable_counters(void)
472{
473 struct evsel *evsel;
474 int err;
475
476 evlist__for_each_entry(evsel_list, evsel) {
477 if (!evsel__is_bpf(evsel))
478 continue;
479
480 err = bpf_counter__enable(evsel);
481 if (err)
482 return err;
483 }
484
485 if (!target__enable_on_exec(&target)) {
486 if (!all_counters_use_bpf)
487 evlist__enable(evsel_list);
488 }
489 return 0;
490}
491
492static void disable_counters(void)
493{
494 struct evsel *counter;
495
496 /*
497 * If we don't have tracee (attaching to task or cpu), counters may
498 * still be running. To get accurate group ratios, we must stop groups
499 * from counting before reading their constituent counters.
500 */
501 if (!target__none(&target)) {
502 evlist__for_each_entry(evsel_list, counter)
503 bpf_counter__disable(counter);
504 if (!all_counters_use_bpf)
505 evlist__disable(evsel_list);
506 }
507}
508
509static volatile sig_atomic_t workload_exec_errno;
510
511/*
512 * evlist__prepare_workload will send a SIGUSR1
513 * if the fork fails, since we asked by setting its
514 * want_signal to true.
515 */
516static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
517 void *ucontext __maybe_unused)
518{
519 workload_exec_errno = info->si_value.sival_int;
520}
521
522static bool evsel__should_store_id(struct evsel *counter)
523{
524 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
525}
526
527static bool is_target_alive(struct target *_target,
528 struct perf_thread_map *threads)
529{
530 struct stat st;
531 int i;
532
533 if (!target__has_task(_target))
534 return true;
535
536 for (i = 0; i < threads->nr; i++) {
537 char path[PATH_MAX];
538
539 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
540 threads->map[i].pid);
541
542 if (!stat(path, &st))
543 return true;
544 }
545
546 return false;
547}
548
549static void process_evlist(struct evlist *evlist, unsigned int interval)
550{
551 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
552
553 if (evlist__ctlfd_process(evlist, &cmd) > 0) {
554 switch (cmd) {
555 case EVLIST_CTL_CMD_ENABLE:
556 fallthrough;
557 case EVLIST_CTL_CMD_DISABLE:
558 if (interval)
559 process_interval();
560 break;
561 case EVLIST_CTL_CMD_SNAPSHOT:
562 case EVLIST_CTL_CMD_ACK:
563 case EVLIST_CTL_CMD_UNSUPPORTED:
564 case EVLIST_CTL_CMD_EVLIST:
565 case EVLIST_CTL_CMD_STOP:
566 case EVLIST_CTL_CMD_PING:
567 default:
568 break;
569 }
570 }
571}
572
573static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
574 int *time_to_sleep)
575{
576 int tts = *time_to_sleep;
577 struct timespec time_diff;
578
579 diff_timespec(&time_diff, time_stop, time_start);
580
581 tts -= time_diff.tv_sec * MSEC_PER_SEC +
582 time_diff.tv_nsec / NSEC_PER_MSEC;
583
584 if (tts < 0)
585 tts = 0;
586
587 *time_to_sleep = tts;
588}
589
590static int dispatch_events(bool forks, int timeout, int interval, int *times)
591{
592 int child_exited = 0, status = 0;
593 int time_to_sleep, sleep_time;
594 struct timespec time_start, time_stop;
595
596 if (interval)
597 sleep_time = interval;
598 else if (timeout)
599 sleep_time = timeout;
600 else
601 sleep_time = 1000;
602
603 time_to_sleep = sleep_time;
604
605 while (!done) {
606 if (forks)
607 child_exited = waitpid(child_pid, &status, WNOHANG);
608 else
609 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
610
611 if (child_exited)
612 break;
613
614 clock_gettime(CLOCK_MONOTONIC, &time_start);
615 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
616 if (timeout || handle_interval(interval, times))
617 break;
618 time_to_sleep = sleep_time;
619 } else { /* fd revent */
620 process_evlist(evsel_list, interval);
621 clock_gettime(CLOCK_MONOTONIC, &time_stop);
622 compute_tts(&time_start, &time_stop, &time_to_sleep);
623 }
624 }
625
626 return status;
627}
628
629enum counter_recovery {
630 COUNTER_SKIP,
631 COUNTER_RETRY,
632 COUNTER_FATAL,
633};
634
635static enum counter_recovery stat_handle_error(struct evsel *counter)
636{
637 char msg[BUFSIZ];
638 /*
639 * PPC returns ENXIO for HW counters until 2.6.37
640 * (behavior changed with commit b0a873e).
641 */
642 if (errno == EINVAL || errno == ENOSYS ||
643 errno == ENOENT || errno == ENXIO) {
644 if (verbose > 0)
645 ui__warning("%s event is not supported by the kernel.\n",
646 evsel__name(counter));
647 counter->supported = false;
648 /*
649 * errored is a sticky flag that means one of the counter's
650 * cpu event had a problem and needs to be reexamined.
651 */
652 counter->errored = true;
653
654 if ((evsel__leader(counter) != counter) ||
655 !(counter->core.leader->nr_members > 1))
656 return COUNTER_SKIP;
657 } else if (evsel__fallback(counter, &target, errno, msg, sizeof(msg))) {
658 if (verbose > 0)
659 ui__warning("%s\n", msg);
660 return COUNTER_RETRY;
661 } else if (target__has_per_thread(&target) && errno != EOPNOTSUPP &&
662 evsel_list->core.threads &&
663 evsel_list->core.threads->err_thread != -1) {
664 /*
665 * For global --per-thread case, skip current
666 * error thread.
667 */
668 if (!thread_map__remove(evsel_list->core.threads,
669 evsel_list->core.threads->err_thread)) {
670 evsel_list->core.threads->err_thread = -1;
671 return COUNTER_RETRY;
672 }
673 } else if (counter->skippable) {
674 if (verbose > 0)
675 ui__warning("skipping event %s that kernel failed to open .\n",
676 evsel__name(counter));
677 counter->supported = false;
678 counter->errored = true;
679 return COUNTER_SKIP;
680 }
681
682 if (errno == EOPNOTSUPP) {
683 if (verbose > 0) {
684 ui__warning("%s event is not supported by the kernel.\n",
685 evsel__name(counter));
686 }
687 counter->supported = false;
688 counter->errored = true;
689
690 if ((evsel__leader(counter) != counter) ||
691 !(counter->core.leader->nr_members > 1))
692 return COUNTER_SKIP;
693 }
694
695 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
696 ui__error("%s\n", msg);
697
698 if (child_pid != -1)
699 kill(child_pid, SIGTERM);
700
701 tpebs_delete();
702
703 return COUNTER_FATAL;
704}
705
706static int __run_perf_stat(int argc, const char **argv, int run_idx)
707{
708 int interval = stat_config.interval;
709 int times = stat_config.times;
710 int timeout = stat_config.timeout;
711 char msg[BUFSIZ];
712 unsigned long long t0, t1;
713 struct evsel *counter;
714 size_t l;
715 int status = 0;
716 const bool forks = (argc > 0);
717 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
718 struct evlist_cpu_iterator evlist_cpu_itr;
719 struct affinity saved_affinity, *affinity = NULL;
720 int err;
721 bool second_pass = false;
722
723 if (forks) {
724 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
725 perror("failed to prepare workload");
726 return -1;
727 }
728 child_pid = evsel_list->workload.pid;
729 }
730
731 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
732 if (affinity__setup(&saved_affinity) < 0) {
733 err = -1;
734 goto err_out;
735 }
736 affinity = &saved_affinity;
737 }
738
739 evlist__for_each_entry(evsel_list, counter) {
740 counter->reset_group = false;
741 if (bpf_counter__load(counter, &target)) {
742 err = -1;
743 goto err_out;
744 }
745 if (!(evsel__is_bperf(counter)))
746 all_counters_use_bpf = false;
747 }
748
749 evlist__reset_aggr_stats(evsel_list);
750
751 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
752 counter = evlist_cpu_itr.evsel;
753
754 /*
755 * bperf calls evsel__open_per_cpu() in bperf__load(), so
756 * no need to call it again here.
757 */
758 if (target.use_bpf)
759 break;
760
761 if (counter->reset_group || counter->errored)
762 continue;
763 if (evsel__is_bperf(counter))
764 continue;
765try_again:
766 if (create_perf_stat_counter(counter, &stat_config, &target,
767 evlist_cpu_itr.cpu_map_idx) < 0) {
768
769 /*
770 * Weak group failed. We cannot just undo this here
771 * because earlier CPUs might be in group mode, and the kernel
772 * doesn't support mixing group and non group reads. Defer
773 * it to later.
774 * Don't close here because we're in the wrong affinity.
775 */
776 if ((errno == EINVAL || errno == EBADF) &&
777 evsel__leader(counter) != counter &&
778 counter->weak_group) {
779 evlist__reset_weak_group(evsel_list, counter, false);
780 assert(counter->reset_group);
781 second_pass = true;
782 continue;
783 }
784
785 switch (stat_handle_error(counter)) {
786 case COUNTER_FATAL:
787 err = -1;
788 goto err_out;
789 case COUNTER_RETRY:
790 goto try_again;
791 case COUNTER_SKIP:
792 continue;
793 default:
794 break;
795 }
796
797 }
798 counter->supported = true;
799 }
800
801 if (second_pass) {
802 /*
803 * Now redo all the weak group after closing them,
804 * and also close errored counters.
805 */
806
807 /* First close errored or weak retry */
808 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
809 counter = evlist_cpu_itr.evsel;
810
811 if (!counter->reset_group && !counter->errored)
812 continue;
813
814 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
815 }
816 /* Now reopen weak */
817 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
818 counter = evlist_cpu_itr.evsel;
819
820 if (!counter->reset_group)
821 continue;
822try_again_reset:
823 pr_debug2("reopening weak %s\n", evsel__name(counter));
824 if (create_perf_stat_counter(counter, &stat_config, &target,
825 evlist_cpu_itr.cpu_map_idx) < 0) {
826
827 switch (stat_handle_error(counter)) {
828 case COUNTER_FATAL:
829 err = -1;
830 goto err_out;
831 case COUNTER_RETRY:
832 goto try_again_reset;
833 case COUNTER_SKIP:
834 continue;
835 default:
836 break;
837 }
838 }
839 counter->supported = true;
840 }
841 }
842 affinity__cleanup(affinity);
843 affinity = NULL;
844
845 evlist__for_each_entry(evsel_list, counter) {
846 if (!counter->supported) {
847 perf_evsel__free_fd(&counter->core);
848 continue;
849 }
850
851 l = strlen(counter->unit);
852 if (l > stat_config.unit_width)
853 stat_config.unit_width = l;
854
855 if (evsel__should_store_id(counter) &&
856 evsel__store_ids(counter, evsel_list)) {
857 err = -1;
858 goto err_out;
859 }
860 }
861
862 if (evlist__apply_filters(evsel_list, &counter, &target)) {
863 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
864 counter->filter, evsel__name(counter), errno,
865 str_error_r(errno, msg, sizeof(msg)));
866 return -1;
867 }
868
869 if (STAT_RECORD) {
870 int fd = perf_data__fd(&perf_stat.data);
871
872 if (is_pipe) {
873 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
874 } else {
875 err = perf_session__write_header(perf_stat.session, evsel_list,
876 fd, false);
877 }
878
879 if (err < 0)
880 goto err_out;
881
882 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
883 process_synthesized_event, is_pipe);
884 if (err < 0)
885 goto err_out;
886
887 }
888
889 if (target.initial_delay) {
890 pr_info(EVLIST_DISABLED_MSG);
891 } else {
892 err = enable_counters();
893 if (err) {
894 err = -1;
895 goto err_out;
896 }
897 }
898
899 /* Exec the command, if any */
900 if (forks)
901 evlist__start_workload(evsel_list);
902
903 if (target.initial_delay > 0) {
904 usleep(target.initial_delay * USEC_PER_MSEC);
905 err = enable_counters();
906 if (err) {
907 err = -1;
908 goto err_out;
909 }
910
911 pr_info(EVLIST_ENABLED_MSG);
912 }
913
914 t0 = rdclock();
915 clock_gettime(CLOCK_MONOTONIC, &ref_time);
916
917 if (forks) {
918 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
919 status = dispatch_events(forks, timeout, interval, ×);
920 if (child_pid != -1) {
921 if (timeout)
922 kill(child_pid, SIGTERM);
923 wait4(child_pid, &status, 0, &stat_config.ru_data);
924 }
925
926 if (workload_exec_errno) {
927 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
928 pr_err("Workload failed: %s\n", emsg);
929 err = -1;
930 goto err_out;
931 }
932
933 if (WIFSIGNALED(status))
934 psignal(WTERMSIG(status), argv[0]);
935 } else {
936 status = dispatch_events(forks, timeout, interval, ×);
937 }
938
939 disable_counters();
940
941 t1 = rdclock();
942
943 if (stat_config.walltime_run_table)
944 stat_config.walltime_run[run_idx] = t1 - t0;
945
946 if (interval && stat_config.summary) {
947 stat_config.interval = 0;
948 stat_config.stop_read_counter = true;
949 init_stats(&walltime_nsecs_stats);
950 update_stats(&walltime_nsecs_stats, t1 - t0);
951
952 evlist__copy_prev_raw_counts(evsel_list);
953 evlist__reset_prev_raw_counts(evsel_list);
954 evlist__reset_aggr_stats(evsel_list);
955 } else {
956 update_stats(&walltime_nsecs_stats, t1 - t0);
957 update_rusage_stats(&ru_stats, &stat_config.ru_data);
958 }
959
960 /*
961 * Closing a group leader splits the group, and as we only disable
962 * group leaders, results in remaining events becoming enabled. To
963 * avoid arbitrary skew, we must read all counters before closing any
964 * group leaders.
965 */
966 if (read_counters() == 0)
967 process_counters();
968
969 /*
970 * We need to keep evsel_list alive, because it's processed
971 * later the evsel_list will be closed after.
972 */
973 if (!STAT_RECORD)
974 evlist__close(evsel_list);
975
976 return WEXITSTATUS(status);
977
978err_out:
979 if (forks)
980 evlist__cancel_workload(evsel_list);
981
982 affinity__cleanup(affinity);
983 return err;
984}
985
986/*
987 * Returns -1 for fatal errors which signifies to not continue
988 * when in repeat mode.
989 *
990 * Returns < -1 error codes when stat record is used. These
991 * result in the stat information being displayed, but writing
992 * to the file fails and is non fatal.
993 */
994static int run_perf_stat(int argc, const char **argv, int run_idx)
995{
996 int ret;
997
998 if (pre_cmd) {
999 ret = system(pre_cmd);
1000 if (ret)
1001 return ret;
1002 }
1003
1004 if (sync_run)
1005 sync();
1006
1007 ret = __run_perf_stat(argc, argv, run_idx);
1008 if (ret)
1009 return ret;
1010
1011 if (post_cmd) {
1012 ret = system(post_cmd);
1013 if (ret)
1014 return ret;
1015 }
1016
1017 return ret;
1018}
1019
1020static void print_counters(struct timespec *ts, int argc, const char **argv)
1021{
1022 /* Do not print anything if we record to the pipe. */
1023 if (STAT_RECORD && perf_stat.data.is_pipe)
1024 return;
1025 if (quiet)
1026 return;
1027
1028 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
1029}
1030
1031static volatile sig_atomic_t signr = -1;
1032
1033static void skip_signal(int signo)
1034{
1035 if ((child_pid == -1) || stat_config.interval)
1036 done = 1;
1037
1038 signr = signo;
1039 /*
1040 * render child_pid harmless
1041 * won't send SIGTERM to a random
1042 * process in case of race condition
1043 * and fast PID recycling
1044 */
1045 child_pid = -1;
1046}
1047
1048static void sig_atexit(void)
1049{
1050 sigset_t set, oset;
1051
1052 /*
1053 * avoid race condition with SIGCHLD handler
1054 * in skip_signal() which is modifying child_pid
1055 * goal is to avoid send SIGTERM to a random
1056 * process
1057 */
1058 sigemptyset(&set);
1059 sigaddset(&set, SIGCHLD);
1060 sigprocmask(SIG_BLOCK, &set, &oset);
1061
1062 if (child_pid != -1)
1063 kill(child_pid, SIGTERM);
1064
1065 sigprocmask(SIG_SETMASK, &oset, NULL);
1066
1067 if (signr == -1)
1068 return;
1069
1070 signal(signr, SIG_DFL);
1071 kill(getpid(), signr);
1072}
1073
1074void perf_stat__set_big_num(int set)
1075{
1076 stat_config.big_num = (set != 0);
1077}
1078
1079void perf_stat__set_no_csv_summary(int set)
1080{
1081 stat_config.no_csv_summary = (set != 0);
1082}
1083
1084static int stat__set_big_num(const struct option *opt __maybe_unused,
1085 const char *s __maybe_unused, int unset)
1086{
1087 big_num_opt = unset ? 0 : 1;
1088 perf_stat__set_big_num(!unset);
1089 return 0;
1090}
1091
1092static int enable_metric_only(const struct option *opt __maybe_unused,
1093 const char *s __maybe_unused, int unset)
1094{
1095 force_metric_only = true;
1096 stat_config.metric_only = !unset;
1097 return 0;
1098}
1099
1100static int append_metric_groups(const struct option *opt __maybe_unused,
1101 const char *str,
1102 int unset __maybe_unused)
1103{
1104 if (metrics) {
1105 char *tmp;
1106
1107 if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
1108 return -ENOMEM;
1109 free(metrics);
1110 metrics = tmp;
1111 } else {
1112 metrics = strdup(str);
1113 if (!metrics)
1114 return -ENOMEM;
1115 }
1116 return 0;
1117}
1118
1119static int parse_control_option(const struct option *opt,
1120 const char *str,
1121 int unset __maybe_unused)
1122{
1123 struct perf_stat_config *config = opt->value;
1124
1125 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1126}
1127
1128static int parse_stat_cgroups(const struct option *opt,
1129 const char *str, int unset)
1130{
1131 if (stat_config.cgroup_list) {
1132 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1133 return -1;
1134 }
1135
1136 return parse_cgroups(opt, str, unset);
1137}
1138
1139static int parse_cputype(const struct option *opt,
1140 const char *str,
1141 int unset __maybe_unused)
1142{
1143 const struct perf_pmu *pmu;
1144 struct evlist *evlist = *(struct evlist **)opt->value;
1145
1146 if (!list_empty(&evlist->core.entries)) {
1147 fprintf(stderr, "Must define cputype before events/metrics\n");
1148 return -1;
1149 }
1150
1151 pmu = perf_pmus__pmu_for_pmu_filter(str);
1152 if (!pmu) {
1153 fprintf(stderr, "--cputype %s is not supported!\n", str);
1154 return -1;
1155 }
1156 parse_events_option_args.pmu_filter = pmu->name;
1157
1158 return 0;
1159}
1160
1161static int parse_cache_level(const struct option *opt,
1162 const char *str,
1163 int unset __maybe_unused)
1164{
1165 int level;
1166 struct opt_aggr_mode *opt_aggr_mode = (struct opt_aggr_mode *)opt->value;
1167 u32 *aggr_level = (u32 *)opt->data;
1168
1169 /*
1170 * If no string is specified, aggregate based on the topology of
1171 * Last Level Cache (LLC). Since the LLC level can change from
1172 * architecture to architecture, set level greater than
1173 * MAX_CACHE_LVL which will be interpreted as LLC.
1174 */
1175 if (str == NULL) {
1176 level = MAX_CACHE_LVL + 1;
1177 goto out;
1178 }
1179
1180 /*
1181 * The format to specify cache level is LX or lX where X is the
1182 * cache level.
1183 */
1184 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) {
1185 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1186 MAX_CACHE_LVL,
1187 MAX_CACHE_LVL);
1188 return -EINVAL;
1189 }
1190
1191 level = atoi(&str[1]);
1192 if (level < 1) {
1193 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1194 MAX_CACHE_LVL,
1195 MAX_CACHE_LVL);
1196 return -EINVAL;
1197 }
1198
1199 if (level > MAX_CACHE_LVL) {
1200 pr_err("perf only supports max cache level of %d.\n"
1201 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL);
1202 return -EINVAL;
1203 }
1204out:
1205 opt_aggr_mode->cache = true;
1206 *aggr_level = level;
1207 return 0;
1208}
1209
1210/**
1211 * Calculate the cache instance ID from the map in
1212 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1213 * Cache instance ID is the first CPU reported in the shared_cpu_list file.
1214 */
1215static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)
1216{
1217 int id;
1218 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map);
1219
1220 /*
1221 * If the map contains no CPU, consider the current CPU to
1222 * be the first online CPU in the cache domain else use the
1223 * first online CPU of the cache domain as the ID.
1224 */
1225 id = perf_cpu_map__min(cpu_map).cpu;
1226 if (id == -1)
1227 id = cpu.cpu;
1228
1229 /* Free the perf_cpu_map used to find the cache ID */
1230 perf_cpu_map__put(cpu_map);
1231
1232 return id;
1233}
1234
1235/**
1236 * cpu__get_cache_id - Returns 0 if successful in populating the
1237 * cache level and cache id. Cache level is read from
1238 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID
1239 * is the first CPU reported by
1240 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1241 */
1242static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache)
1243{
1244 int ret = 0;
1245 u32 cache_level = stat_config.aggr_level;
1246 struct cpu_cache_level caches[MAX_CACHE_LVL];
1247 u32 i = 0, caches_cnt = 0;
1248
1249 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1250 cache->cache = -1;
1251
1252 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt);
1253 if (ret) {
1254 /*
1255 * If caches_cnt is not 0, cpu_cache_level data
1256 * was allocated when building the topology.
1257 * Free the allocated data before returning.
1258 */
1259 if (caches_cnt)
1260 goto free_caches;
1261
1262 return ret;
1263 }
1264
1265 if (!caches_cnt)
1266 return -1;
1267
1268 /*
1269 * Save the data for the highest level if no
1270 * level was specified by the user.
1271 */
1272 if (cache_level > MAX_CACHE_LVL) {
1273 int max_level_index = 0;
1274
1275 for (i = 1; i < caches_cnt; ++i) {
1276 if (caches[i].level > caches[max_level_index].level)
1277 max_level_index = i;
1278 }
1279
1280 cache->cache_lvl = caches[max_level_index].level;
1281 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map);
1282
1283 /* Reset i to 0 to free entire caches[] */
1284 i = 0;
1285 goto free_caches;
1286 }
1287
1288 for (i = 0; i < caches_cnt; ++i) {
1289 if (caches[i].level == cache_level) {
1290 cache->cache_lvl = cache_level;
1291 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1292 }
1293
1294 cpu_cache_level__free(&caches[i]);
1295 }
1296
1297free_caches:
1298 /*
1299 * Free all the allocated cpu_cache_level data.
1300 */
1301 while (i < caches_cnt)
1302 cpu_cache_level__free(&caches[i++]);
1303
1304 return ret;
1305}
1306
1307/**
1308 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache
1309 * level, die and socket populated with the cache instache ID, cache level,
1310 * die and socket for cpu. The function signature is compatible with
1311 * aggr_cpu_id_get_t.
1312 */
1313static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data)
1314{
1315 int ret;
1316 struct aggr_cpu_id id;
1317 struct perf_cache cache;
1318
1319 id = aggr_cpu_id__die(cpu, data);
1320 if (aggr_cpu_id__is_empty(&id))
1321 return id;
1322
1323 ret = cpu__get_cache_details(cpu, &cache);
1324 if (ret)
1325 return id;
1326
1327 id.cache_lvl = cache.cache_lvl;
1328 id.cache = cache.cache;
1329 return id;
1330}
1331
1332static const char *const aggr_mode__string[] = {
1333 [AGGR_CORE] = "core",
1334 [AGGR_CACHE] = "cache",
1335 [AGGR_CLUSTER] = "cluster",
1336 [AGGR_DIE] = "die",
1337 [AGGR_GLOBAL] = "global",
1338 [AGGR_NODE] = "node",
1339 [AGGR_NONE] = "none",
1340 [AGGR_SOCKET] = "socket",
1341 [AGGR_THREAD] = "thread",
1342 [AGGR_UNSET] = "unset",
1343};
1344
1345static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1346 struct perf_cpu cpu)
1347{
1348 return aggr_cpu_id__socket(cpu, /*data=*/NULL);
1349}
1350
1351static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1352 struct perf_cpu cpu)
1353{
1354 return aggr_cpu_id__die(cpu, /*data=*/NULL);
1355}
1356
1357static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused,
1358 struct perf_cpu cpu)
1359{
1360 return aggr_cpu_id__cache(cpu, /*data=*/NULL);
1361}
1362
1363static struct aggr_cpu_id perf_stat__get_cluster(struct perf_stat_config *config __maybe_unused,
1364 struct perf_cpu cpu)
1365{
1366 return aggr_cpu_id__cluster(cpu, /*data=*/NULL);
1367}
1368
1369static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1370 struct perf_cpu cpu)
1371{
1372 return aggr_cpu_id__core(cpu, /*data=*/NULL);
1373}
1374
1375static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1376 struct perf_cpu cpu)
1377{
1378 return aggr_cpu_id__node(cpu, /*data=*/NULL);
1379}
1380
1381static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
1382 struct perf_cpu cpu)
1383{
1384 return aggr_cpu_id__global(cpu, /*data=*/NULL);
1385}
1386
1387static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
1388 struct perf_cpu cpu)
1389{
1390 return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1391}
1392
1393static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1394 aggr_get_id_t get_id, struct perf_cpu cpu)
1395{
1396 struct aggr_cpu_id id;
1397
1398 /* per-process mode - should use global aggr mode */
1399 if (cpu.cpu == -1)
1400 return get_id(config, cpu);
1401
1402 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
1403 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
1404
1405 id = config->cpus_aggr_map->map[cpu.cpu];
1406 return id;
1407}
1408
1409static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1410 struct perf_cpu cpu)
1411{
1412 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
1413}
1414
1415static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1416 struct perf_cpu cpu)
1417{
1418 return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
1419}
1420
1421static struct aggr_cpu_id perf_stat__get_cluster_cached(struct perf_stat_config *config,
1422 struct perf_cpu cpu)
1423{
1424 return perf_stat__get_aggr(config, perf_stat__get_cluster, cpu);
1425}
1426
1427static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config,
1428 struct perf_cpu cpu)
1429{
1430 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu);
1431}
1432
1433static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1434 struct perf_cpu cpu)
1435{
1436 return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
1437}
1438
1439static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1440 struct perf_cpu cpu)
1441{
1442 return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
1443}
1444
1445static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
1446 struct perf_cpu cpu)
1447{
1448 return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
1449}
1450
1451static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
1452 struct perf_cpu cpu)
1453{
1454 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
1455}
1456
1457static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
1458{
1459 switch (aggr_mode) {
1460 case AGGR_SOCKET:
1461 return aggr_cpu_id__socket;
1462 case AGGR_DIE:
1463 return aggr_cpu_id__die;
1464 case AGGR_CLUSTER:
1465 return aggr_cpu_id__cluster;
1466 case AGGR_CACHE:
1467 return aggr_cpu_id__cache;
1468 case AGGR_CORE:
1469 return aggr_cpu_id__core;
1470 case AGGR_NODE:
1471 return aggr_cpu_id__node;
1472 case AGGR_NONE:
1473 return aggr_cpu_id__cpu;
1474 case AGGR_GLOBAL:
1475 return aggr_cpu_id__global;
1476 case AGGR_THREAD:
1477 case AGGR_UNSET:
1478 case AGGR_MAX:
1479 default:
1480 return NULL;
1481 }
1482}
1483
1484static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
1485{
1486 switch (aggr_mode) {
1487 case AGGR_SOCKET:
1488 return perf_stat__get_socket_cached;
1489 case AGGR_DIE:
1490 return perf_stat__get_die_cached;
1491 case AGGR_CLUSTER:
1492 return perf_stat__get_cluster_cached;
1493 case AGGR_CACHE:
1494 return perf_stat__get_cache_id_cached;
1495 case AGGR_CORE:
1496 return perf_stat__get_core_cached;
1497 case AGGR_NODE:
1498 return perf_stat__get_node_cached;
1499 case AGGR_NONE:
1500 return perf_stat__get_cpu_cached;
1501 case AGGR_GLOBAL:
1502 return perf_stat__get_global_cached;
1503 case AGGR_THREAD:
1504 case AGGR_UNSET:
1505 case AGGR_MAX:
1506 default:
1507 return NULL;
1508 }
1509}
1510
1511static int perf_stat_init_aggr_mode(void)
1512{
1513 int nr;
1514 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
1515
1516 if (get_id) {
1517 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1518 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1519 get_id, /*data=*/NULL, needs_sort);
1520 if (!stat_config.aggr_map) {
1521 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1522 return -1;
1523 }
1524 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
1525 }
1526
1527 if (stat_config.aggr_mode == AGGR_THREAD) {
1528 nr = perf_thread_map__nr(evsel_list->core.threads);
1529 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1530 if (stat_config.aggr_map == NULL)
1531 return -ENOMEM;
1532
1533 for (int s = 0; s < nr; s++) {
1534 struct aggr_cpu_id id = aggr_cpu_id__empty();
1535
1536 id.thread_idx = s;
1537 stat_config.aggr_map->map[s] = id;
1538 }
1539 return 0;
1540 }
1541
1542 /*
1543 * The evsel_list->cpus is the base we operate on,
1544 * taking the highest cpu number to be the size of
1545 * the aggregation translate cpumap.
1546 */
1547 if (!perf_cpu_map__is_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))
1548 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
1549 else
1550 nr = 0;
1551 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1552 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1553}
1554
1555static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1556{
1557 free(map);
1558}
1559
1560static void perf_stat__exit_aggr_mode(void)
1561{
1562 cpu_aggr_map__delete(stat_config.aggr_map);
1563 cpu_aggr_map__delete(stat_config.cpus_aggr_map);
1564 stat_config.aggr_map = NULL;
1565 stat_config.cpus_aggr_map = NULL;
1566}
1567
1568static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
1569{
1570 struct perf_env *env = data;
1571 struct aggr_cpu_id id = aggr_cpu_id__empty();
1572
1573 if (cpu.cpu != -1)
1574 id.socket = env->cpu[cpu.cpu].socket_id;
1575
1576 return id;
1577}
1578
1579static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
1580{
1581 struct perf_env *env = data;
1582 struct aggr_cpu_id id = aggr_cpu_id__empty();
1583
1584 if (cpu.cpu != -1) {
1585 /*
1586 * die_id is relative to socket, so start
1587 * with the socket ID and then add die to
1588 * make a unique ID.
1589 */
1590 id.socket = env->cpu[cpu.cpu].socket_id;
1591 id.die = env->cpu[cpu.cpu].die_id;
1592 }
1593
1594 return id;
1595}
1596
1597static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env,
1598 u32 cache_level, struct aggr_cpu_id *id)
1599{
1600 int i;
1601 int caches_cnt = env->caches_cnt;
1602 struct cpu_cache_level *caches = env->caches;
1603
1604 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1605 id->cache = -1;
1606
1607 if (!caches_cnt)
1608 return;
1609
1610 for (i = caches_cnt - 1; i > -1; --i) {
1611 struct perf_cpu_map *cpu_map;
1612 int map_contains_cpu;
1613
1614 /*
1615 * If user has not specified a level, find the fist level with
1616 * the cpu in the map. Since building the map is expensive, do
1617 * this only if levels match.
1618 */
1619 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level)
1620 continue;
1621
1622 cpu_map = perf_cpu_map__new(caches[i].map);
1623 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu);
1624 perf_cpu_map__put(cpu_map);
1625
1626 if (map_contains_cpu != -1) {
1627 id->cache_lvl = caches[i].level;
1628 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1629 return;
1630 }
1631 }
1632}
1633
1634static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu,
1635 void *data)
1636{
1637 struct perf_env *env = data;
1638 struct aggr_cpu_id id = aggr_cpu_id__empty();
1639
1640 if (cpu.cpu != -1) {
1641 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level;
1642
1643 id.socket = env->cpu[cpu.cpu].socket_id;
1644 id.die = env->cpu[cpu.cpu].die_id;
1645 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id);
1646 }
1647
1648 return id;
1649}
1650
1651static struct aggr_cpu_id perf_env__get_cluster_aggr_by_cpu(struct perf_cpu cpu,
1652 void *data)
1653{
1654 struct perf_env *env = data;
1655 struct aggr_cpu_id id = aggr_cpu_id__empty();
1656
1657 if (cpu.cpu != -1) {
1658 id.socket = env->cpu[cpu.cpu].socket_id;
1659 id.die = env->cpu[cpu.cpu].die_id;
1660 id.cluster = env->cpu[cpu.cpu].cluster_id;
1661 }
1662
1663 return id;
1664}
1665
1666static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
1667{
1668 struct perf_env *env = data;
1669 struct aggr_cpu_id id = aggr_cpu_id__empty();
1670
1671 if (cpu.cpu != -1) {
1672 /*
1673 * core_id is relative to socket, die and cluster, we need a
1674 * global id. So we set socket, die id, cluster id and core id.
1675 */
1676 id.socket = env->cpu[cpu.cpu].socket_id;
1677 id.die = env->cpu[cpu.cpu].die_id;
1678 id.cluster = env->cpu[cpu.cpu].cluster_id;
1679 id.core = env->cpu[cpu.cpu].core_id;
1680 }
1681
1682 return id;
1683}
1684
1685static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
1686{
1687 struct perf_env *env = data;
1688 struct aggr_cpu_id id = aggr_cpu_id__empty();
1689
1690 if (cpu.cpu != -1) {
1691 /*
1692 * core_id is relative to socket and die,
1693 * we need a global id. So we set
1694 * socket, die id and core id
1695 */
1696 id.socket = env->cpu[cpu.cpu].socket_id;
1697 id.die = env->cpu[cpu.cpu].die_id;
1698 id.core = env->cpu[cpu.cpu].core_id;
1699 id.cpu = cpu;
1700 }
1701
1702 return id;
1703}
1704
1705static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
1706{
1707 struct aggr_cpu_id id = aggr_cpu_id__empty();
1708
1709 id.node = perf_env__numa_node(data, cpu);
1710 return id;
1711}
1712
1713static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
1714 void *data __maybe_unused)
1715{
1716 struct aggr_cpu_id id = aggr_cpu_id__empty();
1717
1718 /* it always aggregates to the cpu 0 */
1719 id.cpu = (struct perf_cpu){ .cpu = 0 };
1720 return id;
1721}
1722
1723static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1724 struct perf_cpu cpu)
1725{
1726 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1727}
1728static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1729 struct perf_cpu cpu)
1730{
1731 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1732}
1733
1734static struct aggr_cpu_id perf_stat__get_cluster_file(struct perf_stat_config *config __maybe_unused,
1735 struct perf_cpu cpu)
1736{
1737 return perf_env__get_cluster_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1738}
1739
1740static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused,
1741 struct perf_cpu cpu)
1742{
1743 return perf_env__get_cache_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1744}
1745
1746static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1747 struct perf_cpu cpu)
1748{
1749 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1750}
1751
1752static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
1753 struct perf_cpu cpu)
1754{
1755 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1756}
1757
1758static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1759 struct perf_cpu cpu)
1760{
1761 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1762}
1763
1764static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
1765 struct perf_cpu cpu)
1766{
1767 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1768}
1769
1770static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
1771{
1772 switch (aggr_mode) {
1773 case AGGR_SOCKET:
1774 return perf_env__get_socket_aggr_by_cpu;
1775 case AGGR_DIE:
1776 return perf_env__get_die_aggr_by_cpu;
1777 case AGGR_CLUSTER:
1778 return perf_env__get_cluster_aggr_by_cpu;
1779 case AGGR_CACHE:
1780 return perf_env__get_cache_aggr_by_cpu;
1781 case AGGR_CORE:
1782 return perf_env__get_core_aggr_by_cpu;
1783 case AGGR_NODE:
1784 return perf_env__get_node_aggr_by_cpu;
1785 case AGGR_GLOBAL:
1786 return perf_env__get_global_aggr_by_cpu;
1787 case AGGR_NONE:
1788 return perf_env__get_cpu_aggr_by_cpu;
1789 case AGGR_THREAD:
1790 case AGGR_UNSET:
1791 case AGGR_MAX:
1792 default:
1793 return NULL;
1794 }
1795}
1796
1797static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
1798{
1799 switch (aggr_mode) {
1800 case AGGR_SOCKET:
1801 return perf_stat__get_socket_file;
1802 case AGGR_DIE:
1803 return perf_stat__get_die_file;
1804 case AGGR_CLUSTER:
1805 return perf_stat__get_cluster_file;
1806 case AGGR_CACHE:
1807 return perf_stat__get_cache_file;
1808 case AGGR_CORE:
1809 return perf_stat__get_core_file;
1810 case AGGR_NODE:
1811 return perf_stat__get_node_file;
1812 case AGGR_GLOBAL:
1813 return perf_stat__get_global_file;
1814 case AGGR_NONE:
1815 return perf_stat__get_cpu_file;
1816 case AGGR_THREAD:
1817 case AGGR_UNSET:
1818 case AGGR_MAX:
1819 default:
1820 return NULL;
1821 }
1822}
1823
1824static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1825{
1826 struct perf_env *env = &st->session->header.env;
1827 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
1828 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1829
1830 if (stat_config.aggr_mode == AGGR_THREAD) {
1831 int nr = perf_thread_map__nr(evsel_list->core.threads);
1832
1833 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1834 if (stat_config.aggr_map == NULL)
1835 return -ENOMEM;
1836
1837 for (int s = 0; s < nr; s++) {
1838 struct aggr_cpu_id id = aggr_cpu_id__empty();
1839
1840 id.thread_idx = s;
1841 stat_config.aggr_map->map[s] = id;
1842 }
1843 return 0;
1844 }
1845
1846 if (!get_id)
1847 return 0;
1848
1849 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1850 get_id, env, needs_sort);
1851 if (!stat_config.aggr_map) {
1852 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1853 return -1;
1854 }
1855 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
1856 return 0;
1857}
1858
1859/*
1860 * Add default events, if there were no attributes specified or
1861 * if -d/--detailed, -d -d or -d -d -d is used:
1862 */
1863static int add_default_events(void)
1864{
1865 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
1866 struct parse_events_error err;
1867 struct evlist *evlist = evlist__new();
1868 struct evsel *evsel;
1869 int ret = 0;
1870
1871 if (!evlist)
1872 return -ENOMEM;
1873
1874 parse_events_error__init(&err);
1875
1876 /* Set attrs if no event is selected and !null_run: */
1877 if (stat_config.null_run)
1878 goto out;
1879
1880 if (transaction_run) {
1881 /* Handle -T as -M transaction. Once platform specific metrics
1882 * support has been added to the json files, all architectures
1883 * will use this approach. To determine transaction support
1884 * on an architecture test for such a metric name.
1885 */
1886 if (!metricgroup__has_metric(pmu, "transaction")) {
1887 pr_err("Missing transaction metrics\n");
1888 ret = -1;
1889 goto out;
1890 }
1891 ret = metricgroup__parse_groups(evlist, pmu, "transaction",
1892 stat_config.metric_no_group,
1893 stat_config.metric_no_merge,
1894 stat_config.metric_no_threshold,
1895 stat_config.user_requested_cpu_list,
1896 stat_config.system_wide,
1897 stat_config.hardware_aware_grouping,
1898 &stat_config.metric_events);
1899 goto out;
1900 }
1901
1902 if (smi_cost) {
1903 int smi;
1904
1905 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1906 pr_err("freeze_on_smi is not supported.\n");
1907 ret = -1;
1908 goto out;
1909 }
1910
1911 if (!smi) {
1912 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1913 pr_err("Failed to set freeze_on_smi.\n");
1914 ret = -1;
1915 goto out;
1916 }
1917 smi_reset = true;
1918 }
1919
1920 if (!metricgroup__has_metric(pmu, "smi")) {
1921 pr_err("Missing smi metrics\n");
1922 ret = -1;
1923 goto out;
1924 }
1925
1926 if (!force_metric_only)
1927 stat_config.metric_only = true;
1928
1929 ret = metricgroup__parse_groups(evlist, pmu, "smi",
1930 stat_config.metric_no_group,
1931 stat_config.metric_no_merge,
1932 stat_config.metric_no_threshold,
1933 stat_config.user_requested_cpu_list,
1934 stat_config.system_wide,
1935 stat_config.hardware_aware_grouping,
1936 &stat_config.metric_events);
1937 goto out;
1938 }
1939
1940 if (topdown_run) {
1941 unsigned int max_level = metricgroups__topdown_max_level();
1942 char str[] = "TopdownL1";
1943
1944 if (!force_metric_only)
1945 stat_config.metric_only = true;
1946
1947 if (!max_level) {
1948 pr_err("Topdown requested but the topdown metric groups aren't present.\n"
1949 "(See perf list the metric groups have names like TopdownL1)\n");
1950 ret = -1;
1951 goto out;
1952 }
1953 if (stat_config.topdown_level > max_level) {
1954 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
1955 ret = -1;
1956 goto out;
1957 } else if (!stat_config.topdown_level) {
1958 stat_config.topdown_level = 1;
1959 }
1960 if (!stat_config.interval && !stat_config.metric_only) {
1961 fprintf(stat_config.output,
1962 "Topdown accuracy may decrease when measuring long periods.\n"
1963 "Please print the result regularly, e.g. -I1000\n");
1964 }
1965 str[8] = stat_config.topdown_level + '0';
1966 if (metricgroup__parse_groups(evlist,
1967 pmu, str,
1968 /*metric_no_group=*/false,
1969 /*metric_no_merge=*/false,
1970 /*metric_no_threshold=*/true,
1971 stat_config.user_requested_cpu_list,
1972 stat_config.system_wide,
1973 stat_config.hardware_aware_grouping,
1974 &stat_config.metric_events) < 0) {
1975 ret = -1;
1976 goto out;
1977 }
1978 }
1979
1980 if (!stat_config.topdown_level)
1981 stat_config.topdown_level = 1;
1982
1983 if (!evlist->core.nr_entries && !evsel_list->core.nr_entries) {
1984 /* No events so add defaults. */
1985 if (target__has_cpu(&target))
1986 ret = parse_events(evlist, "cpu-clock", &err);
1987 else
1988 ret = parse_events(evlist, "task-clock", &err);
1989 if (ret)
1990 goto out;
1991
1992 ret = parse_events(evlist,
1993 "context-switches,"
1994 "cpu-migrations,"
1995 "page-faults,"
1996 "instructions,"
1997 "cycles,"
1998 "stalled-cycles-frontend,"
1999 "stalled-cycles-backend,"
2000 "branches,"
2001 "branch-misses",
2002 &err);
2003 if (ret)
2004 goto out;
2005
2006 /*
2007 * Add TopdownL1 metrics if they exist. To minimize
2008 * multiplexing, don't request threshold computation.
2009 */
2010 if (metricgroup__has_metric(pmu, "Default")) {
2011 struct evlist *metric_evlist = evlist__new();
2012
2013 if (!metric_evlist) {
2014 ret = -ENOMEM;
2015 goto out;
2016 }
2017 if (metricgroup__parse_groups(metric_evlist, pmu, "Default",
2018 /*metric_no_group=*/false,
2019 /*metric_no_merge=*/false,
2020 /*metric_no_threshold=*/true,
2021 stat_config.user_requested_cpu_list,
2022 stat_config.system_wide,
2023 stat_config.hardware_aware_grouping,
2024 &stat_config.metric_events) < 0) {
2025 ret = -1;
2026 goto out;
2027 }
2028
2029 evlist__for_each_entry(metric_evlist, evsel)
2030 evsel->default_metricgroup = true;
2031
2032 evlist__splice_list_tail(evlist, &metric_evlist->core.entries);
2033 evlist__delete(metric_evlist);
2034 }
2035 }
2036
2037 /* Detailed events get appended to the event list: */
2038
2039 if (!ret && detailed_run >= 1) {
2040 /*
2041 * Detailed stats (-d), covering the L1 and last level data
2042 * caches:
2043 */
2044 ret = parse_events(evlist,
2045 "L1-dcache-loads,"
2046 "L1-dcache-load-misses,"
2047 "LLC-loads,"
2048 "LLC-load-misses",
2049 &err);
2050 }
2051 if (!ret && detailed_run >= 2) {
2052 /*
2053 * Very detailed stats (-d -d), covering the instruction cache
2054 * and the TLB caches:
2055 */
2056 ret = parse_events(evlist,
2057 "L1-icache-loads,"
2058 "L1-icache-load-misses,"
2059 "dTLB-loads,"
2060 "dTLB-load-misses,"
2061 "iTLB-loads,"
2062 "iTLB-load-misses",
2063 &err);
2064 }
2065 if (!ret && detailed_run >= 3) {
2066 /*
2067 * Very, very detailed stats (-d -d -d), adding prefetch events:
2068 */
2069 ret = parse_events(evlist,
2070 "L1-dcache-prefetches,"
2071 "L1-dcache-prefetch-misses",
2072 &err);
2073 }
2074out:
2075 if (!ret) {
2076 evlist__for_each_entry(evlist, evsel) {
2077 /*
2078 * Make at least one event non-skippable so fatal errors are visible.
2079 * 'cycles' always used to be default and non-skippable, so use that.
2080 */
2081 if (strcmp("cycles", evsel__name(evsel)))
2082 evsel->skippable = true;
2083 }
2084 }
2085 parse_events_error__exit(&err);
2086 evlist__splice_list_tail(evsel_list, &evlist->core.entries);
2087 evlist__delete(evlist);
2088 return ret;
2089}
2090
2091static const char * const stat_record_usage[] = {
2092 "perf stat record [<options>]",
2093 NULL,
2094};
2095
2096static void init_features(struct perf_session *session)
2097{
2098 int feat;
2099
2100 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2101 perf_header__set_feat(&session->header, feat);
2102
2103 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
2104 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2105 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2106 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2107 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2108}
2109
2110static int __cmd_record(const struct option stat_options[], struct opt_aggr_mode *opt_mode,
2111 int argc, const char **argv)
2112{
2113 struct perf_session *session;
2114 struct perf_data *data = &perf_stat.data;
2115
2116 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2117 PARSE_OPT_STOP_AT_NON_OPTION);
2118 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(opt_mode);
2119
2120 if (output_name)
2121 data->path = output_name;
2122
2123 if (stat_config.run_count != 1 || forever) {
2124 pr_err("Cannot use -r option with perf stat record.\n");
2125 return -1;
2126 }
2127
2128 session = perf_session__new(data, NULL);
2129 if (IS_ERR(session)) {
2130 pr_err("Perf session creation failed\n");
2131 return PTR_ERR(session);
2132 }
2133
2134 init_features(session);
2135
2136 session->evlist = evsel_list;
2137 perf_stat.session = session;
2138 perf_stat.record = true;
2139 return argc;
2140}
2141
2142static int process_stat_round_event(struct perf_session *session,
2143 union perf_event *event)
2144{
2145 struct perf_record_stat_round *stat_round = &event->stat_round;
2146 struct timespec tsh, *ts = NULL;
2147 const char **argv = session->header.env.cmdline_argv;
2148 int argc = session->header.env.nr_cmdline;
2149
2150 process_counters();
2151
2152 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2153 update_stats(&walltime_nsecs_stats, stat_round->time);
2154
2155 if (stat_config.interval && stat_round->time) {
2156 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2157 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2158 ts = &tsh;
2159 }
2160
2161 print_counters(ts, argc, argv);
2162 return 0;
2163}
2164
2165static
2166int process_stat_config_event(struct perf_session *session,
2167 union perf_event *event)
2168{
2169 const struct perf_tool *tool = session->tool;
2170 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2171
2172 perf_event__read_stat_config(&stat_config, &event->stat_config);
2173
2174 if (perf_cpu_map__is_empty(st->cpus)) {
2175 if (st->aggr_mode != AGGR_UNSET)
2176 pr_warning("warning: processing task data, aggregation mode not set\n");
2177 } else if (st->aggr_mode != AGGR_UNSET) {
2178 stat_config.aggr_mode = st->aggr_mode;
2179 }
2180
2181 if (perf_stat.data.is_pipe)
2182 perf_stat_init_aggr_mode();
2183 else
2184 perf_stat_init_aggr_mode_file(st);
2185
2186 if (stat_config.aggr_map) {
2187 int nr_aggr = stat_config.aggr_map->nr;
2188
2189 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
2190 pr_err("cannot allocate aggr counts\n");
2191 return -1;
2192 }
2193 }
2194 return 0;
2195}
2196
2197static int set_maps(struct perf_stat *st)
2198{
2199 if (!st->cpus || !st->threads)
2200 return 0;
2201
2202 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2203 return -EINVAL;
2204
2205 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2206
2207 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))
2208 return -ENOMEM;
2209
2210 st->maps_allocated = true;
2211 return 0;
2212}
2213
2214static
2215int process_thread_map_event(struct perf_session *session,
2216 union perf_event *event)
2217{
2218 const struct perf_tool *tool = session->tool;
2219 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2220
2221 if (st->threads) {
2222 pr_warning("Extra thread map event, ignoring.\n");
2223 return 0;
2224 }
2225
2226 st->threads = thread_map__new_event(&event->thread_map);
2227 if (!st->threads)
2228 return -ENOMEM;
2229
2230 return set_maps(st);
2231}
2232
2233static
2234int process_cpu_map_event(struct perf_session *session,
2235 union perf_event *event)
2236{
2237 const struct perf_tool *tool = session->tool;
2238 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2239 struct perf_cpu_map *cpus;
2240
2241 if (st->cpus) {
2242 pr_warning("Extra cpu map event, ignoring.\n");
2243 return 0;
2244 }
2245
2246 cpus = cpu_map__new_data(&event->cpu_map.data);
2247 if (!cpus)
2248 return -ENOMEM;
2249
2250 st->cpus = cpus;
2251 return set_maps(st);
2252}
2253
2254static const char * const stat_report_usage[] = {
2255 "perf stat report [<options>]",
2256 NULL,
2257};
2258
2259static struct perf_stat perf_stat = {
2260 .aggr_mode = AGGR_UNSET,
2261 .aggr_level = 0,
2262};
2263
2264static int __cmd_report(int argc, const char **argv)
2265{
2266 struct perf_session *session;
2267 const struct option options[] = {
2268 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2269 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2270 "aggregate counts per processor socket", AGGR_SOCKET),
2271 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2272 "aggregate counts per processor die", AGGR_DIE),
2273 OPT_SET_UINT(0, "per-cluster", &perf_stat.aggr_mode,
2274 "aggregate counts perf processor cluster", AGGR_CLUSTER),
2275 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level,
2276 "cache level",
2277 "aggregate count at this cache level (Default: LLC)",
2278 parse_cache_level),
2279 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2280 "aggregate counts per physical processor core", AGGR_CORE),
2281 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2282 "aggregate counts per numa node", AGGR_NODE),
2283 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2284 "disable CPU count aggregation", AGGR_NONE),
2285 OPT_END()
2286 };
2287 struct stat st;
2288 int ret;
2289
2290 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2291
2292 if (!input_name || !strlen(input_name)) {
2293 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2294 input_name = "-";
2295 else
2296 input_name = "perf.data";
2297 }
2298
2299 perf_stat.data.path = input_name;
2300 perf_stat.data.mode = PERF_DATA_MODE_READ;
2301
2302 perf_tool__init(&perf_stat.tool, /*ordered_events=*/false);
2303 perf_stat.tool.attr = perf_event__process_attr;
2304 perf_stat.tool.event_update = perf_event__process_event_update;
2305 perf_stat.tool.thread_map = process_thread_map_event;
2306 perf_stat.tool.cpu_map = process_cpu_map_event;
2307 perf_stat.tool.stat_config = process_stat_config_event;
2308 perf_stat.tool.stat = perf_event__process_stat_event;
2309 perf_stat.tool.stat_round = process_stat_round_event;
2310
2311 session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2312 if (IS_ERR(session))
2313 return PTR_ERR(session);
2314
2315 perf_stat.session = session;
2316 stat_config.output = stderr;
2317 evlist__delete(evsel_list);
2318 evsel_list = session->evlist;
2319
2320 ret = perf_session__process_events(session);
2321 if (ret)
2322 return ret;
2323
2324 perf_session__delete(session);
2325 return 0;
2326}
2327
2328static void setup_system_wide(int forks)
2329{
2330 /*
2331 * Make system wide (-a) the default target if
2332 * no target was specified and one of following
2333 * conditions is met:
2334 *
2335 * - there's no workload specified
2336 * - there is workload specified but all requested
2337 * events are system wide events
2338 */
2339 if (!target__none(&target))
2340 return;
2341
2342 if (!forks)
2343 target.system_wide = true;
2344 else {
2345 struct evsel *counter;
2346
2347 evlist__for_each_entry(evsel_list, counter) {
2348 if (!counter->core.requires_cpu &&
2349 !evsel__name_is(counter, "duration_time")) {
2350 return;
2351 }
2352 }
2353
2354 if (evsel_list->core.nr_entries)
2355 target.system_wide = true;
2356 }
2357}
2358
2359int cmd_stat(int argc, const char **argv)
2360{
2361 struct opt_aggr_mode opt_mode = {};
2362 struct option stat_options[] = {
2363 OPT_BOOLEAN('T', "transaction", &transaction_run,
2364 "hardware transaction statistics"),
2365 OPT_CALLBACK('e', "event", &parse_events_option_args, "event",
2366 "event selector. use 'perf list' to list available events",
2367 parse_events_option),
2368 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
2369 "event filter", parse_filter),
2370 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
2371 "child tasks do not inherit counters"),
2372 OPT_STRING('p', "pid", &target.pid, "pid",
2373 "stat events on existing process id"),
2374 OPT_STRING('t', "tid", &target.tid, "tid",
2375 "stat events on existing thread id"),
2376#ifdef HAVE_BPF_SKEL
2377 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
2378 "stat events on existing bpf program id"),
2379 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
2380 "use bpf program to count events"),
2381 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
2382 "path to perf_event_attr map"),
2383#endif
2384 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
2385 "system-wide collection from all CPUs"),
2386 OPT_BOOLEAN(0, "scale", &stat_config.scale,
2387 "Use --no-scale to disable counter scaling for multiplexing"),
2388 OPT_INCR('v', "verbose", &verbose,
2389 "be more verbose (show counter open errors, etc)"),
2390 OPT_INTEGER('r', "repeat", &stat_config.run_count,
2391 "repeat command and print average + stddev (max: 100, forever: 0)"),
2392 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
2393 "display details about each run (only with -r option)"),
2394 OPT_BOOLEAN('n', "null", &stat_config.null_run,
2395 "null run - dont start any counters"),
2396 OPT_INCR('d', "detailed", &detailed_run,
2397 "detailed run - start a lot of events"),
2398 OPT_BOOLEAN('S', "sync", &sync_run,
2399 "call sync() before starting a run"),
2400 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
2401 "print large numbers with thousands\' separators",
2402 stat__set_big_num),
2403 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
2404 "list of cpus to monitor in system-wide"),
2405 OPT_BOOLEAN('A', "no-aggr", &opt_mode.no_aggr,
2406 "disable aggregation across CPUs or PMUs"),
2407 OPT_BOOLEAN(0, "no-merge", &opt_mode.no_aggr,
2408 "disable aggregation the same as -A or -no-aggr"),
2409 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
2410 "Merge identical named hybrid events"),
2411 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
2412 "print counts with custom separator"),
2413 OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
2414 "print counts in JSON format"),
2415 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
2416 "monitor event in cgroup name only", parse_stat_cgroups),
2417 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
2418 "expand events for each cgroup"),
2419 OPT_STRING('o', "output", &output_name, "file", "output file name"),
2420 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
2421 OPT_INTEGER(0, "log-fd", &output_fd,
2422 "log output to fd, instead of stderr"),
2423 OPT_STRING(0, "pre", &pre_cmd, "command",
2424 "command to run prior to the measured command"),
2425 OPT_STRING(0, "post", &post_cmd, "command",
2426 "command to run after to the measured command"),
2427 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
2428 "print counts at regular interval in ms "
2429 "(overhead is possible for values <= 100ms)"),
2430 OPT_INTEGER(0, "interval-count", &stat_config.times,
2431 "print counts for fixed number of times"),
2432 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
2433 "clear screen in between new interval"),
2434 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
2435 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
2436 OPT_BOOLEAN(0, "per-socket", &opt_mode.socket,
2437 "aggregate counts per processor socket"),
2438 OPT_BOOLEAN(0, "per-die", &opt_mode.die, "aggregate counts per processor die"),
2439 OPT_BOOLEAN(0, "per-cluster", &opt_mode.cluster,
2440 "aggregate counts per processor cluster"),
2441 OPT_CALLBACK_OPTARG(0, "per-cache", &opt_mode, &stat_config.aggr_level,
2442 "cache level", "aggregate count at this cache level (Default: LLC)",
2443 parse_cache_level),
2444 OPT_BOOLEAN(0, "per-core", &opt_mode.core,
2445 "aggregate counts per physical processor core"),
2446 OPT_BOOLEAN(0, "per-thread", &opt_mode.thread, "aggregate counts per thread"),
2447 OPT_BOOLEAN(0, "per-node", &opt_mode.node, "aggregate counts per numa node"),
2448 OPT_INTEGER('D', "delay", &target.initial_delay,
2449 "ms to wait before starting measurement after program start (-1: start with events disabled)"),
2450 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
2451 "Only print computed metrics. No raw values", enable_metric_only),
2452 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
2453 "don't group metric events, impacts multiplexing"),
2454 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
2455 "don't try to share events between metrics in a group"),
2456 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,
2457 "disable adding events for the metric threshold calculation"),
2458 OPT_BOOLEAN(0, "topdown", &topdown_run,
2459 "measure top-down statistics"),
2460#ifdef HAVE_ARCH_X86_64_SUPPORT
2461 OPT_BOOLEAN(0, "record-tpebs", &tpebs_recording,
2462 "enable recording for tpebs when retire_latency required"),
2463#endif
2464 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
2465 "Set the metrics level for the top-down statistics (0: max level)"),
2466 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
2467 "measure SMI cost"),
2468 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
2469 "monitor specified metrics or metric groups (separated by ,)",
2470 append_metric_groups),
2471 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
2472 "Configure all used events to run in kernel space.",
2473 PARSE_OPT_EXCLUSIVE),
2474 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
2475 "Configure all used events to run in user space.",
2476 PARSE_OPT_EXCLUSIVE),
2477 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
2478 "Use with 'percore' event qualifier to show the event "
2479 "counts of one hardware thread by sum up total hardware "
2480 "threads of same physical core"),
2481 OPT_BOOLEAN(0, "summary", &stat_config.summary,
2482 "print summary for interval mode"),
2483 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
2484 "don't print 'summary' for CSV summary output"),
2485 OPT_BOOLEAN(0, "quiet", &quiet,
2486 "don't print any output, messages or warnings (useful with record)"),
2487 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
2488 "Only enable events on applying cpu with this type "
2489 "for hybrid platform (e.g. core or atom)",
2490 parse_cputype),
2491#ifdef HAVE_LIBPFM
2492 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
2493 "libpfm4 event selector. use 'perf list' to list available events",
2494 parse_libpfm_events_option),
2495#endif
2496 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
2497 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
2498 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
2499 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
2500 parse_control_option),
2501 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
2502 "measure I/O performance metrics provided by arch/platform",
2503 iostat_parse),
2504 OPT_END()
2505 };
2506 const char * const stat_usage[] = {
2507 "perf stat [<options>] [<command>]",
2508 NULL
2509 };
2510 int status = -EINVAL, run_idx, err;
2511 const char *mode;
2512 FILE *output = stderr;
2513 unsigned int interval, timeout;
2514 const char * const stat_subcommands[] = { "record", "report" };
2515 char errbuf[BUFSIZ];
2516
2517 setlocale(LC_ALL, "");
2518
2519 evsel_list = evlist__new();
2520 if (evsel_list == NULL)
2521 return -ENOMEM;
2522
2523 parse_events__shrink_config_terms();
2524
2525 /* String-parsing callback-based options would segfault when negated */
2526 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2527 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2528 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2529
2530 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2531 (const char **) stat_usage,
2532 PARSE_OPT_STOP_AT_NON_OPTION);
2533
2534 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(&opt_mode);
2535
2536 if (stat_config.csv_sep) {
2537 stat_config.csv_output = true;
2538 if (!strcmp(stat_config.csv_sep, "\\t"))
2539 stat_config.csv_sep = "\t";
2540 } else
2541 stat_config.csv_sep = DEFAULT_SEPARATOR;
2542
2543 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
2544 argc = __cmd_record(stat_options, &opt_mode, argc, argv);
2545 if (argc < 0)
2546 return -1;
2547 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
2548 return __cmd_report(argc, argv);
2549
2550 interval = stat_config.interval;
2551 timeout = stat_config.timeout;
2552
2553 /*
2554 * For record command the -o is already taken care of.
2555 */
2556 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2557 output = NULL;
2558
2559 if (output_name && output_fd) {
2560 fprintf(stderr, "cannot use both --output and --log-fd\n");
2561 parse_options_usage(stat_usage, stat_options, "o", 1);
2562 parse_options_usage(NULL, stat_options, "log-fd", 0);
2563 goto out;
2564 }
2565
2566 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2567 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2568 goto out;
2569 }
2570
2571 if (stat_config.metric_only && stat_config.run_count > 1) {
2572 fprintf(stderr, "--metric-only is not supported with -r\n");
2573 goto out;
2574 }
2575
2576 if (stat_config.csv_output || (stat_config.metric_only && stat_config.json_output)) {
2577 /*
2578 * Current CSV and metric-only JSON output doesn't display the
2579 * metric threshold so don't compute it.
2580 */
2581 stat_config.metric_no_threshold = true;
2582 }
2583
2584 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2585 fprintf(stderr, "--table is only supported with -r\n");
2586 parse_options_usage(stat_usage, stat_options, "r", 1);
2587 parse_options_usage(NULL, stat_options, "table", 0);
2588 goto out;
2589 }
2590
2591 if (output_fd < 0) {
2592 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2593 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2594 goto out;
2595 }
2596
2597 if (!output && !quiet) {
2598 struct timespec tm;
2599 mode = append_file ? "a" : "w";
2600
2601 output = fopen(output_name, mode);
2602 if (!output) {
2603 perror("failed to create output file");
2604 return -1;
2605 }
2606 if (!stat_config.json_output) {
2607 clock_gettime(CLOCK_REALTIME, &tm);
2608 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2609 }
2610 } else if (output_fd > 0) {
2611 mode = append_file ? "a" : "w";
2612 output = fdopen(output_fd, mode);
2613 if (!output) {
2614 perror("Failed opening logfd");
2615 return -errno;
2616 }
2617 }
2618
2619 if (stat_config.interval_clear && !isatty(fileno(output))) {
2620 fprintf(stderr, "--interval-clear does not work with output\n");
2621 parse_options_usage(stat_usage, stat_options, "o", 1);
2622 parse_options_usage(NULL, stat_options, "log-fd", 0);
2623 parse_options_usage(NULL, stat_options, "interval-clear", 0);
2624 return -1;
2625 }
2626
2627 stat_config.output = output;
2628
2629 /*
2630 * let the spreadsheet do the pretty-printing
2631 */
2632 if (stat_config.csv_output) {
2633 /* User explicitly passed -B? */
2634 if (big_num_opt == 1) {
2635 fprintf(stderr, "-B option not supported with -x\n");
2636 parse_options_usage(stat_usage, stat_options, "B", 1);
2637 parse_options_usage(NULL, stat_options, "x", 1);
2638 goto out;
2639 } else /* Nope, so disable big number formatting */
2640 stat_config.big_num = false;
2641 } else if (big_num_opt == 0) /* User passed --no-big-num */
2642 stat_config.big_num = false;
2643
2644 target.inherit = !stat_config.no_inherit;
2645 err = target__validate(&target);
2646 if (err) {
2647 target__strerror(&target, err, errbuf, BUFSIZ);
2648 pr_warning("%s\n", errbuf);
2649 }
2650
2651 setup_system_wide(argc);
2652
2653 /*
2654 * Display user/system times only for single
2655 * run and when there's specified tracee.
2656 */
2657 if ((stat_config.run_count == 1) && target__none(&target))
2658 stat_config.ru_display = true;
2659
2660 if (stat_config.run_count < 0) {
2661 pr_err("Run count must be a positive number\n");
2662 parse_options_usage(stat_usage, stat_options, "r", 1);
2663 goto out;
2664 } else if (stat_config.run_count == 0) {
2665 forever = true;
2666 stat_config.run_count = 1;
2667 }
2668
2669 if (stat_config.walltime_run_table) {
2670 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2671 if (!stat_config.walltime_run) {
2672 pr_err("failed to setup -r option");
2673 goto out;
2674 }
2675 }
2676
2677 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2678 !target__has_task(&target)) {
2679 if (!target.system_wide || target.cpu_list) {
2680 fprintf(stderr, "The --per-thread option is only "
2681 "available when monitoring via -p -t -a "
2682 "options or only --per-thread.\n");
2683 parse_options_usage(NULL, stat_options, "p", 1);
2684 parse_options_usage(NULL, stat_options, "t", 1);
2685 goto out;
2686 }
2687 }
2688
2689 /*
2690 * no_aggr, cgroup are for system-wide only
2691 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2692 */
2693 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2694 stat_config.aggr_mode != AGGR_THREAD) ||
2695 (nr_cgroups || stat_config.cgroup_list)) &&
2696 !target__has_cpu(&target)) {
2697 fprintf(stderr, "both cgroup and no-aggregation "
2698 "modes only available in system-wide mode\n");
2699
2700 parse_options_usage(stat_usage, stat_options, "G", 1);
2701 parse_options_usage(NULL, stat_options, "A", 1);
2702 parse_options_usage(NULL, stat_options, "a", 1);
2703 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2704 goto out;
2705 }
2706
2707 if (stat_config.iostat_run) {
2708 status = iostat_prepare(evsel_list, &stat_config);
2709 if (status)
2710 goto out;
2711 if (iostat_mode == IOSTAT_LIST) {
2712 iostat_list(evsel_list, &stat_config);
2713 goto out;
2714 } else if (verbose > 0)
2715 iostat_list(evsel_list, &stat_config);
2716 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2717 target.system_wide = true;
2718 }
2719
2720 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2721 target.per_thread = true;
2722
2723 stat_config.system_wide = target.system_wide;
2724 if (target.cpu_list) {
2725 stat_config.user_requested_cpu_list = strdup(target.cpu_list);
2726 if (!stat_config.user_requested_cpu_list) {
2727 status = -ENOMEM;
2728 goto out;
2729 }
2730 }
2731
2732 /*
2733 * Metric parsing needs to be delayed as metrics may optimize events
2734 * knowing the target is system-wide.
2735 */
2736 if (metrics) {
2737 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
2738 int ret = metricgroup__parse_groups(evsel_list, pmu, metrics,
2739 stat_config.metric_no_group,
2740 stat_config.metric_no_merge,
2741 stat_config.metric_no_threshold,
2742 stat_config.user_requested_cpu_list,
2743 stat_config.system_wide,
2744 stat_config.hardware_aware_grouping,
2745 &stat_config.metric_events);
2746
2747 zfree(&metrics);
2748 if (ret) {
2749 status = ret;
2750 goto out;
2751 }
2752 }
2753
2754 if (add_default_events())
2755 goto out;
2756
2757 if (stat_config.cgroup_list) {
2758 if (nr_cgroups > 0) {
2759 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2760 parse_options_usage(stat_usage, stat_options, "G", 1);
2761 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2762 goto out;
2763 }
2764
2765 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2766 &stat_config.metric_events, true) < 0) {
2767 parse_options_usage(stat_usage, stat_options,
2768 "for-each-cgroup", 0);
2769 goto out;
2770 }
2771 }
2772
2773 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list);
2774
2775 if (evlist__create_maps(evsel_list, &target) < 0) {
2776 if (target__has_task(&target)) {
2777 pr_err("Problems finding threads of monitor\n");
2778 parse_options_usage(stat_usage, stat_options, "p", 1);
2779 parse_options_usage(NULL, stat_options, "t", 1);
2780 } else if (target__has_cpu(&target)) {
2781 perror("failed to parse CPUs map");
2782 parse_options_usage(stat_usage, stat_options, "C", 1);
2783 parse_options_usage(NULL, stat_options, "a", 1);
2784 }
2785 goto out;
2786 }
2787
2788 evlist__check_cpu_maps(evsel_list);
2789
2790 /*
2791 * Initialize thread_map with comm names,
2792 * so we could print it out on output.
2793 */
2794 if (stat_config.aggr_mode == AGGR_THREAD) {
2795 thread_map__read_comms(evsel_list->core.threads);
2796 }
2797
2798 if (stat_config.aggr_mode == AGGR_NODE)
2799 cpu__setup_cpunode_map();
2800
2801 if (stat_config.times && interval)
2802 interval_count = true;
2803 else if (stat_config.times && !interval) {
2804 pr_err("interval-count option should be used together with "
2805 "interval-print.\n");
2806 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2807 parse_options_usage(stat_usage, stat_options, "I", 1);
2808 goto out;
2809 }
2810
2811 if (timeout && timeout < 100) {
2812 if (timeout < 10) {
2813 pr_err("timeout must be >= 10ms.\n");
2814 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2815 goto out;
2816 } else
2817 pr_warning("timeout < 100ms. "
2818 "The overhead percentage could be high in some cases. "
2819 "Please proceed with caution.\n");
2820 }
2821 if (timeout && interval) {
2822 pr_err("timeout option is not supported with interval-print.\n");
2823 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2824 parse_options_usage(stat_usage, stat_options, "I", 1);
2825 goto out;
2826 }
2827
2828 if (perf_stat_init_aggr_mode())
2829 goto out;
2830
2831 if (evlist__alloc_stats(&stat_config, evsel_list, interval))
2832 goto out;
2833
2834 /*
2835 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2836 * while avoiding that older tools show confusing messages.
2837 *
2838 * However for pipe sessions we need to keep it zero,
2839 * because script's perf_evsel__check_attr is triggered
2840 * by attr->sample_type != 0, and we can't run it on
2841 * stat sessions.
2842 */
2843 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2844
2845 /*
2846 * We dont want to block the signals - that would cause
2847 * child tasks to inherit that and Ctrl-C would not work.
2848 * What we want is for Ctrl-C to work in the exec()-ed
2849 * task, but being ignored by perf stat itself:
2850 */
2851 atexit(sig_atexit);
2852 if (!forever)
2853 signal(SIGINT, skip_signal);
2854 signal(SIGCHLD, skip_signal);
2855 signal(SIGALRM, skip_signal);
2856 signal(SIGABRT, skip_signal);
2857
2858 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2859 goto out;
2860
2861 /* Enable ignoring missing threads when -p option is defined. */
2862 evlist__first(evsel_list)->ignore_missing_thread = target.pid;
2863 status = 0;
2864 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2865 if (stat_config.run_count != 1 && verbose > 0)
2866 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2867 run_idx + 1);
2868
2869 if (run_idx != 0)
2870 evlist__reset_prev_raw_counts(evsel_list);
2871
2872 status = run_perf_stat(argc, argv, run_idx);
2873 if (status == -1)
2874 break;
2875
2876 if (forever && !interval) {
2877 print_counters(NULL, argc, argv);
2878 perf_stat__reset_stats();
2879 }
2880 }
2881
2882 if (!forever && status != -1 && (!interval || stat_config.summary)) {
2883 if (stat_config.run_count > 1)
2884 evlist__copy_res_stats(&stat_config, evsel_list);
2885 print_counters(NULL, argc, argv);
2886 }
2887
2888 evlist__finalize_ctlfd(evsel_list);
2889
2890 if (STAT_RECORD) {
2891 /*
2892 * We synthesize the kernel mmap record just so that older tools
2893 * don't emit warnings about not being able to resolve symbols
2894 * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2895 * a saner message about no samples being in the perf.data file.
2896 *
2897 * This also serves to suppress a warning about f_header.data.size == 0
2898 * in header.c at the moment 'perf stat record' gets introduced, which
2899 * is not really needed once we start adding the stat specific PERF_RECORD_
2900 * records, but the need to suppress the kptr_restrict messages in older
2901 * tools remain -acme
2902 */
2903 int fd = perf_data__fd(&perf_stat.data);
2904
2905 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2906 process_synthesized_event,
2907 &perf_stat.session->machines.host);
2908 if (err) {
2909 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2910 "older tools may produce warnings about this file\n.");
2911 }
2912
2913 if (!interval) {
2914 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2915 pr_err("failed to write stat round event\n");
2916 }
2917
2918 if (!perf_stat.data.is_pipe) {
2919 perf_stat.session->header.data_size += perf_stat.bytes_written;
2920 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2921 }
2922
2923 evlist__close(evsel_list);
2924 perf_session__delete(perf_stat.session);
2925 }
2926
2927 perf_stat__exit_aggr_mode();
2928 evlist__free_stats(evsel_list);
2929out:
2930 if (stat_config.iostat_run)
2931 iostat_release(evsel_list);
2932
2933 zfree(&stat_config.walltime_run);
2934 zfree(&stat_config.user_requested_cpu_list);
2935
2936 if (smi_cost && smi_reset)
2937 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2938
2939 evlist__delete(evsel_list);
2940
2941 metricgroup__rblist_exit(&stat_config.metric_events);
2942 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2943
2944 return status;
2945}
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}