1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * builtin-stat.c
4 *
5 * Builtin stat command: Give a precise performance counters summary
6 * overview about any workload, CPU or specific PID.
7 *
8 * Sample output:
9
10 $ perf stat ./hackbench 10
11
12 Time: 0.118
13
14 Performance counter stats for './hackbench 10':
15
16 1708.761321 task-clock # 11.037 CPUs utilized
17 41,190 context-switches # 0.024 M/sec
18 6,735 CPU-migrations # 0.004 M/sec
19 17,318 page-faults # 0.010 M/sec
20 5,205,202,243 cycles # 3.046 GHz
21 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
22 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
23 2,603,501,247 instructions # 0.50 insns per cycle
24 # 1.48 stalled cycles per insn
25 484,357,498 branches # 283.455 M/sec
26 6,388,934 branch-misses # 1.32% of all branches
27
28 0.154822978 seconds time elapsed
29
30 *
31 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
32 *
33 * Improvements and fixes by:
34 *
35 * Arjan van de Ven <arjan@linux.intel.com>
36 * Yanmin Zhang <yanmin.zhang@intel.com>
37 * Wu Fengguang <fengguang.wu@intel.com>
38 * Mike Galbraith <efault@gmx.de>
39 * Paul Mackerras <paulus@samba.org>
40 * Jaswinder Singh Rajput <jaswinder@kernel.org>
41 */
42
43 #include "builtin.h"
44 #include "util/cgroup.h"
45 #include <subcmd/parse-options.h>
46 #include "util/parse-events.h"
47 #include "util/pmus.h"
48 #include "util/pmu.h"
49 #include "util/event.h"
50 #include "util/evlist.h"
51 #include "util/evsel.h"
52 #include "util/debug.h"
53 #include "util/color.h"
54 #include "util/stat.h"
55 #include "util/header.h"
56 #include "util/cpumap.h"
57 #include "util/thread_map.h"
58 #include "util/counts.h"
59 #include "util/topdown.h"
60 #include "util/session.h"
61 #include "util/tool.h"
62 #include "util/string2.h"
63 #include "util/metricgroup.h"
64 #include "util/synthetic-events.h"
65 #include "util/target.h"
66 #include "util/time-utils.h"
67 #include "util/top.h"
68 #include "util/affinity.h"
69 #include "util/pfm.h"
70 #include "util/bpf_counter.h"
71 #include "util/iostat.h"
72 #include "util/util.h"
73 #include "asm/bug.h"
74
75 #include <linux/time64.h>
76 #include <linux/zalloc.h>
77 #include <api/fs/fs.h>
78 #include <errno.h>
79 #include <signal.h>
80 #include <stdlib.h>
81 #include <sys/prctl.h>
82 #include <inttypes.h>
83 #include <locale.h>
84 #include <math.h>
85 #include <sys/types.h>
86 #include <sys/stat.h>
87 #include <sys/wait.h>
88 #include <unistd.h>
89 #include <sys/time.h>
90 #include <sys/resource.h>
91 #include <linux/err.h>
92
93 #include <linux/ctype.h>
94 #include <perf/evlist.h>
95 #include <internal/threadmap.h>
96
97 #define DEFAULT_SEPARATOR " "
98 #define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
99
100 static void print_counters(struct timespec *ts, int argc, const char **argv);
101
102 static struct evlist *evsel_list;
103 static struct parse_events_option_args parse_events_option_args = {
104 .evlistp = &evsel_list,
105 };
106
107 static bool all_counters_use_bpf = true;
108
109 static struct target target = {
110 .uid = UINT_MAX,
111 };
112
113 #define METRIC_ONLY_LEN 20
114
115 static volatile sig_atomic_t child_pid = -1;
116 static int detailed_run = 0;
117 static bool transaction_run;
118 static bool topdown_run = false;
119 static bool smi_cost = false;
120 static bool smi_reset = false;
121 static int big_num_opt = -1;
122 static const char *pre_cmd = NULL;
123 static const char *post_cmd = NULL;
124 static bool sync_run = false;
125 static bool forever = false;
126 static bool force_metric_only = false;
127 static struct timespec ref_time;
128 static bool append_file;
129 static bool interval_count;
130 static const char *output_name;
131 static int output_fd;
132 static char *metrics;
133
134 struct perf_stat {
135 bool record;
136 struct perf_data data;
137 struct perf_session *session;
138 u64 bytes_written;
139 struct perf_tool tool;
140 bool maps_allocated;
141 struct perf_cpu_map *cpus;
142 struct perf_thread_map *threads;
143 enum aggr_mode aggr_mode;
144 u32 aggr_level;
145 };
146
147 static struct perf_stat perf_stat;
148 #define STAT_RECORD perf_stat.record
149
150 static volatile sig_atomic_t done = 0;
151
152 static struct perf_stat_config stat_config = {
153 .aggr_mode = AGGR_GLOBAL,
154 .aggr_level = MAX_CACHE_LVL + 1,
155 .scale = true,
156 .unit_width = 4, /* strlen("unit") */
157 .run_count = 1,
158 .metric_only_len = METRIC_ONLY_LEN,
159 .walltime_nsecs_stats = &walltime_nsecs_stats,
160 .ru_stats = &ru_stats,
161 .big_num = true,
162 .ctl_fd = -1,
163 .ctl_fd_ack = -1,
164 .iostat_run = false,
165 };
166
167 /* Options set from the command line. */
168 struct opt_aggr_mode {
169 bool node, socket, die, cluster, cache, core, thread, no_aggr;
170 };
171
172 /* Turn command line option into most generic aggregation mode setting. */
173 static enum aggr_mode opt_aggr_mode_to_aggr_mode(struct opt_aggr_mode *opt_mode)
174 {
175 enum aggr_mode mode = AGGR_GLOBAL;
176
177 if (opt_mode->node)
178 mode = AGGR_NODE;
179 if (opt_mode->socket)
180 mode = AGGR_SOCKET;
181 if (opt_mode->die)
182 mode = AGGR_DIE;
183 if (opt_mode->cluster)
184 mode = AGGR_CLUSTER;
185 if (opt_mode->cache)
186 mode = AGGR_CACHE;
187 if (opt_mode->core)
188 mode = AGGR_CORE;
189 if (opt_mode->thread)
190 mode = AGGR_THREAD;
191 if (opt_mode->no_aggr)
192 mode = AGGR_NONE;
193 return mode;
194 }
195
196 static void evlist__check_cpu_maps(struct evlist *evlist)
197 {
198 struct evsel *evsel, *warned_leader = NULL;
199
200 evlist__for_each_entry(evlist, evsel) {
201 struct evsel *leader = evsel__leader(evsel);
202
203 /* Check that leader matches cpus with each member. */
204 if (leader == evsel)
205 continue;
206 if (perf_cpu_map__equal(leader->core.cpus, evsel->core.cpus))
207 continue;
208
209 /* If there's mismatch disable the group and warn user. */
210 if (warned_leader != leader) {
211 char buf[200];
212
213 pr_warning("WARNING: grouped events cpus do not match.\n"
214 "Events with CPUs not matching the leader will "
215 "be removed from the group.\n");
216 evsel__group_desc(leader, buf, sizeof(buf));
217 pr_warning(" %s\n", buf);
218 warned_leader = leader;
219 }
220 if (verbose > 0) {
221 char buf[200];
222
223 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
224 pr_warning(" %s: %s\n", leader->name, buf);
225 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
226 pr_warning(" %s: %s\n", evsel->name, buf);
227 }
228
229 evsel__remove_from_group(evsel, leader);
230 }
231 }
232
233 static inline void diff_timespec(struct timespec *r, struct timespec *a,
234 struct timespec *b)
235 {
236 r->tv_sec = a->tv_sec - b->tv_sec;
237 if (a->tv_nsec < b->tv_nsec) {
238 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
239 r->tv_sec--;
240 } else {
241 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
242 }
243 }
244
245 static void perf_stat__reset_stats(void)
246 {
247 evlist__reset_stats(evsel_list);
248 perf_stat__reset_shadow_stats();
249 }
250
251 static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
252 union perf_event *event,
253 struct perf_sample *sample __maybe_unused,
254 struct machine *machine __maybe_unused)
255 {
256 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
257 pr_err("failed to write perf data, error: %m\n");
258 return -1;
259 }
260
261 perf_stat.bytes_written += event->header.size;
262 return 0;
263 }
264
265 static int write_stat_round_event(u64 tm, u64 type)
266 {
267 return perf_event__synthesize_stat_round(NULL, tm, type,
268 process_synthesized_event,
269 NULL);
270 }
271
272 #define WRITE_STAT_ROUND_EVENT(time, interval) \
273 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
274
275 #define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
276
277 static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,
278 struct perf_counts_values *count)
279 {
280 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
281 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
282
283 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
284 process_synthesized_event, NULL);
285 }
286
287 static int read_single_counter(struct evsel *counter, int cpu_map_idx, int thread)
288 {
289 int err = evsel__read_counter(counter, cpu_map_idx, thread);
290
291 /*
292 * Reading user and system time will fail when the process
293 * terminates. Use the wait4 values in that case.
294 */
295 if (err && cpu_map_idx == 0 &&
296 (counter->tool_event == PERF_TOOL_USER_TIME ||
297 counter->tool_event == PERF_TOOL_SYSTEM_TIME)) {
298 u64 val, *start_time;
299 struct perf_counts_values *count =
300 perf_counts(counter->counts, cpu_map_idx, thread);
301
302 start_time = xyarray__entry(counter->start_times, cpu_map_idx, thread);
303 if (counter->tool_event == PERF_TOOL_USER_TIME)
304 val = ru_stats.ru_utime_usec_stat.mean;
305 else
306 val = ru_stats.ru_stime_usec_stat.mean;
307 count->ena = count->run = *start_time + val;
308 count->val = val;
309 return 0;
310 }
311 return err;
312 }
313
314 /*
315 * Read out the results of a single counter:
316 * do not aggregate counts across CPUs in system-wide mode
317 */
318 static int read_counter_cpu(struct evsel *counter, int cpu_map_idx)
319 {
320 int nthreads = perf_thread_map__nr(evsel_list->core.threads);
321 int thread;
322
323 if (!counter->supported)
324 return -ENOENT;
325
326 for (thread = 0; thread < nthreads; thread++) {
327 struct perf_counts_values *count;
328
329 count = perf_counts(counter->counts, cpu_map_idx, thread);
330
331 /*
332 * The leader's group read loads data into its group members
333 * (via evsel__read_counter()) and sets their count->loaded.
334 */
335 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&
336 read_single_counter(counter, cpu_map_idx, thread)) {
337 counter->counts->scaled = -1;
338 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
339 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
340 return -1;
341 }
342
343 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
344
345 if (STAT_RECORD) {
346 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {
347 pr_err("failed to write stat event\n");
348 return -1;
349 }
350 }
351
352 if (verbose > 1) {
353 fprintf(stat_config.output,
354 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
355 evsel__name(counter),
356 perf_cpu_map__cpu(evsel__cpus(counter),
357 cpu_map_idx).cpu,
358 count->val, count->ena, count->run);
359 }
360 }
361
362 return 0;
363 }
364
365 static int read_affinity_counters(void)
366 {
367 struct evlist_cpu_iterator evlist_cpu_itr;
368 struct affinity saved_affinity, *affinity;
369
370 if (all_counters_use_bpf)
371 return 0;
372
373 if (!target__has_cpu(&target) || target__has_per_thread(&target))
374 affinity = NULL;
375 else if (affinity__setup(&saved_affinity) < 0)
376 return -1;
377 else
378 affinity = &saved_affinity;
379
380 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
381 struct evsel *counter = evlist_cpu_itr.evsel;
382
383 if (evsel__is_bpf(counter))
384 continue;
385
386 if (!counter->err)
387 counter->err = read_counter_cpu(counter, evlist_cpu_itr.cpu_map_idx);
388 }
389 if (affinity)
390 affinity__cleanup(&saved_affinity);
391
392 return 0;
393 }
394
395 static int read_bpf_map_counters(void)
396 {
397 struct evsel *counter;
398 int err;
399
400 evlist__for_each_entry(evsel_list, counter) {
401 if (!evsel__is_bpf(counter))
402 continue;
403
404 err = bpf_counter__read(counter);
405 if (err)
406 return err;
407 }
408 return 0;
409 }
410
411 static int read_counters(void)
412 {
413 if (!stat_config.stop_read_counter) {
414 if (read_bpf_map_counters() ||
415 read_affinity_counters())
416 return -1;
417 }
418 return 0;
419 }
420
421 static void process_counters(void)
422 {
423 struct evsel *counter;
424
425 evlist__for_each_entry(evsel_list, counter) {
426 if (counter->err)
427 pr_debug("failed to read counter %s\n", counter->name);
428 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
429 pr_warning("failed to process counter %s\n", counter->name);
430 counter->err = 0;
431 }
432
433 perf_stat_merge_counters(&stat_config, evsel_list);
434 perf_stat_process_percore(&stat_config, evsel_list);
435 }
436
437 static void process_interval(void)
438 {
439 struct timespec ts, rs;
440
441 clock_gettime(CLOCK_MONOTONIC, &ts);
442 diff_timespec(&rs, &ts, &ref_time);
443
444 evlist__reset_aggr_stats(evsel_list);
445
446 if (read_counters() == 0)
447 process_counters();
448
449 if (STAT_RECORD) {
450 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
451 pr_err("failed to write stat round event\n");
452 }
453
454 init_stats(&walltime_nsecs_stats);
455 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
456 print_counters(&rs, 0, NULL);
457 }
458
459 static bool handle_interval(unsigned int interval, int *times)
460 {
461 if (interval) {
462 process_interval();
463 if (interval_count && !(--(*times)))
464 return true;
465 }
466 return false;
467 }
468
469 static int enable_counters(void)
470 {
471 struct evsel *evsel;
472 int err;
473
474 evlist__for_each_entry(evsel_list, evsel) {
475 if (!evsel__is_bpf(evsel))
476 continue;
477
478 err = bpf_counter__enable(evsel);
479 if (err)
480 return err;
481 }
482
483 if (!target__enable_on_exec(&target)) {
484 if (!all_counters_use_bpf)
485 evlist__enable(evsel_list);
486 }
487 return 0;
488 }
489
490 static void disable_counters(void)
491 {
492 struct evsel *counter;
493
494 /*
495 * If we don't have tracee (attaching to task or cpu), counters may
496 * still be running. To get accurate group ratios, we must stop groups
497 * from counting before reading their constituent counters.
498 */
499 if (!target__none(&target)) {
500 evlist__for_each_entry(evsel_list, counter)
501 bpf_counter__disable(counter);
502 if (!all_counters_use_bpf)
503 evlist__disable(evsel_list);
504 }
505 }
506
507 static volatile sig_atomic_t workload_exec_errno;
508
509 /*
510 * evlist__prepare_workload will send a SIGUSR1
511 * if the fork fails, since we asked by setting its
512 * want_signal to true.
513 */
514 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
515 void *ucontext __maybe_unused)
516 {
517 workload_exec_errno = info->si_value.sival_int;
518 }
519
520 static bool evsel__should_store_id(struct evsel *counter)
521 {
522 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
523 }
524
525 static bool is_target_alive(struct target *_target,
526 struct perf_thread_map *threads)
527 {
528 struct stat st;
529 int i;
530
531 if (!target__has_task(_target))
532 return true;
533
534 for (i = 0; i < threads->nr; i++) {
535 char path[PATH_MAX];
536
537 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
538 threads->map[i].pid);
539
540 if (!stat(path, &st))
541 return true;
542 }
543
544 return false;
545 }
546
547 static void process_evlist(struct evlist *evlist, unsigned int interval)
548 {
549 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
550
551 if (evlist__ctlfd_process(evlist, &cmd) > 0) {
552 switch (cmd) {
553 case EVLIST_CTL_CMD_ENABLE:
554 fallthrough;
555 case EVLIST_CTL_CMD_DISABLE:
556 if (interval)
557 process_interval();
558 break;
559 case EVLIST_CTL_CMD_SNAPSHOT:
560 case EVLIST_CTL_CMD_ACK:
561 case EVLIST_CTL_CMD_UNSUPPORTED:
562 case EVLIST_CTL_CMD_EVLIST:
563 case EVLIST_CTL_CMD_STOP:
564 case EVLIST_CTL_CMD_PING:
565 default:
566 break;
567 }
568 }
569 }
570
571 static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
572 int *time_to_sleep)
573 {
574 int tts = *time_to_sleep;
575 struct timespec time_diff;
576
577 diff_timespec(&time_diff, time_stop, time_start);
578
579 tts -= time_diff.tv_sec * MSEC_PER_SEC +
580 time_diff.tv_nsec / NSEC_PER_MSEC;
581
582 if (tts < 0)
583 tts = 0;
584
585 *time_to_sleep = tts;
586 }
587
588 static int dispatch_events(bool forks, int timeout, int interval, int *times)
589 {
590 int child_exited = 0, status = 0;
591 int time_to_sleep, sleep_time;
592 struct timespec time_start, time_stop;
593
594 if (interval)
595 sleep_time = interval;
596 else if (timeout)
597 sleep_time = timeout;
598 else
599 sleep_time = 1000;
600
601 time_to_sleep = sleep_time;
602
603 while (!done) {
604 if (forks)
605 child_exited = waitpid(child_pid, &status, WNOHANG);
606 else
607 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
608
609 if (child_exited)
610 break;
611
612 clock_gettime(CLOCK_MONOTONIC, &time_start);
613 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
614 if (timeout || handle_interval(interval, times))
615 break;
616 time_to_sleep = sleep_time;
617 } else { /* fd revent */
618 process_evlist(evsel_list, interval);
619 clock_gettime(CLOCK_MONOTONIC, &time_stop);
620 compute_tts(&time_start, &time_stop, &time_to_sleep);
621 }
622 }
623
624 return status;
625 }
626
627 enum counter_recovery {
628 COUNTER_SKIP,
629 COUNTER_RETRY,
630 COUNTER_FATAL,
631 };
632
633 static enum counter_recovery stat_handle_error(struct evsel *counter)
634 {
635 char msg[BUFSIZ];
636 /*
637 * PPC returns ENXIO for HW counters until 2.6.37
638 * (behavior changed with commit b0a873e).
639 */
640 if (errno == EINVAL || errno == ENOSYS ||
641 errno == ENOENT || errno == EOPNOTSUPP ||
642 errno == ENXIO) {
643 if (verbose > 0)
644 ui__warning("%s event is not supported by the kernel.\n",
645 evsel__name(counter));
646 counter->supported = false;
647 /*
648 * errored is a sticky flag that means one of the counter's
649 * cpu event had a problem and needs to be reexamined.
650 */
651 counter->errored = true;
652
653 if ((evsel__leader(counter) != counter) ||
654 !(counter->core.leader->nr_members > 1))
655 return COUNTER_SKIP;
656 } else if (evsel__fallback(counter, &target, errno, msg, sizeof(msg))) {
657 if (verbose > 0)
658 ui__warning("%s\n", msg);
659 return COUNTER_RETRY;
660 } else if (target__has_per_thread(&target) &&
661 evsel_list->core.threads &&
662 evsel_list->core.threads->err_thread != -1) {
663 /*
664 * For global --per-thread case, skip current
665 * error thread.
666 */
667 if (!thread_map__remove(evsel_list->core.threads,
668 evsel_list->core.threads->err_thread)) {
669 evsel_list->core.threads->err_thread = -1;
670 return COUNTER_RETRY;
671 }
672 } else if (counter->skippable) {
673 if (verbose > 0)
674 ui__warning("skipping event %s that kernel failed to open .\n",
675 evsel__name(counter));
676 counter->supported = false;
677 counter->errored = true;
678 return COUNTER_SKIP;
679 }
680
681 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
682 ui__error("%s\n", msg);
683
684 if (child_pid != -1)
685 kill(child_pid, SIGTERM);
686 return COUNTER_FATAL;
687 }
688
689 static int __run_perf_stat(int argc, const char **argv, int run_idx)
690 {
691 int interval = stat_config.interval;
692 int times = stat_config.times;
693 int timeout = stat_config.timeout;
694 char msg[BUFSIZ];
695 unsigned long long t0, t1;
696 struct evsel *counter;
697 size_t l;
698 int status = 0;
699 const bool forks = (argc > 0);
700 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
701 struct evlist_cpu_iterator evlist_cpu_itr;
702 struct affinity saved_affinity, *affinity = NULL;
703 int err;
704 bool second_pass = false;
705
706 if (forks) {
707 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
708 perror("failed to prepare workload");
709 return -1;
710 }
711 child_pid = evsel_list->workload.pid;
712 }
713
714 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
715 if (affinity__setup(&saved_affinity) < 0)
716 return -1;
717 affinity = &saved_affinity;
718 }
719
720 evlist__for_each_entry(evsel_list, counter) {
721 counter->reset_group = false;
722 if (bpf_counter__load(counter, &target))
723 return -1;
724 if (!(evsel__is_bperf(counter)))
725 all_counters_use_bpf = false;
726 }
727
728 evlist__reset_aggr_stats(evsel_list);
729
730 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
731 counter = evlist_cpu_itr.evsel;
732
733 /*
734 * bperf calls evsel__open_per_cpu() in bperf__load(), so
735 * no need to call it again here.
736 */
737 if (target.use_bpf)
738 break;
739
740 if (counter->reset_group || counter->errored)
741 continue;
742 if (evsel__is_bperf(counter))
743 continue;
744 try_again:
745 if (create_perf_stat_counter(counter, &stat_config, &target,
746 evlist_cpu_itr.cpu_map_idx) < 0) {
747
748 /*
749 * Weak group failed. We cannot just undo this here
750 * because earlier CPUs might be in group mode, and the kernel
751 * doesn't support mixing group and non group reads. Defer
752 * it to later.
753 * Don't close here because we're in the wrong affinity.
754 */
755 if ((errno == EINVAL || errno == EBADF) &&
756 evsel__leader(counter) != counter &&
757 counter->weak_group) {
758 evlist__reset_weak_group(evsel_list, counter, false);
759 assert(counter->reset_group);
760 second_pass = true;
761 continue;
762 }
763
764 switch (stat_handle_error(counter)) {
765 case COUNTER_FATAL:
766 return -1;
767 case COUNTER_RETRY:
768 goto try_again;
769 case COUNTER_SKIP:
770 continue;
771 default:
772 break;
773 }
774
775 }
776 counter->supported = true;
777 }
778
779 if (second_pass) {
780 /*
781 * Now redo all the weak group after closing them,
782 * and also close errored counters.
783 */
784
785 /* First close errored or weak retry */
786 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
787 counter = evlist_cpu_itr.evsel;
788
789 if (!counter->reset_group && !counter->errored)
790 continue;
791
792 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
793 }
794 /* Now reopen weak */
795 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
796 counter = evlist_cpu_itr.evsel;
797
798 if (!counter->reset_group)
799 continue;
800 try_again_reset:
801 pr_debug2("reopening weak %s\n", evsel__name(counter));
802 if (create_perf_stat_counter(counter, &stat_config, &target,
803 evlist_cpu_itr.cpu_map_idx) < 0) {
804
805 switch (stat_handle_error(counter)) {
806 case COUNTER_FATAL:
807 return -1;
808 case COUNTER_RETRY:
809 goto try_again_reset;
810 case COUNTER_SKIP:
811 continue;
812 default:
813 break;
814 }
815 }
816 counter->supported = true;
817 }
818 }
819 affinity__cleanup(affinity);
820
821 evlist__for_each_entry(evsel_list, counter) {
822 if (!counter->supported) {
823 perf_evsel__free_fd(&counter->core);
824 continue;
825 }
826
827 l = strlen(counter->unit);
828 if (l > stat_config.unit_width)
829 stat_config.unit_width = l;
830
831 if (evsel__should_store_id(counter) &&
832 evsel__store_ids(counter, evsel_list))
833 return -1;
834 }
835
836 if (evlist__apply_filters(evsel_list, &counter)) {
837 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
838 counter->filter, evsel__name(counter), errno,
839 str_error_r(errno, msg, sizeof(msg)));
840 return -1;
841 }
842
843 if (STAT_RECORD) {
844 int fd = perf_data__fd(&perf_stat.data);
845
846 if (is_pipe) {
847 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
848 } else {
849 err = perf_session__write_header(perf_stat.session, evsel_list,
850 fd, false);
851 }
852
853 if (err < 0)
854 return err;
855
856 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
857 process_synthesized_event, is_pipe);
858 if (err < 0)
859 return err;
860 }
861
862 if (target.initial_delay) {
863 pr_info(EVLIST_DISABLED_MSG);
864 } else {
865 err = enable_counters();
866 if (err)
867 return -1;
868 }
869
870 /* Exec the command, if any */
871 if (forks)
872 evlist__start_workload(evsel_list);
873
874 if (target.initial_delay > 0) {
875 usleep(target.initial_delay * USEC_PER_MSEC);
876 err = enable_counters();
877 if (err)
878 return -1;
879
880 pr_info(EVLIST_ENABLED_MSG);
881 }
882
883 t0 = rdclock();
884 clock_gettime(CLOCK_MONOTONIC, &ref_time);
885
886 if (forks) {
887 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
888 status = dispatch_events(forks, timeout, interval, ×);
889 if (child_pid != -1) {
890 if (timeout)
891 kill(child_pid, SIGTERM);
892 wait4(child_pid, &status, 0, &stat_config.ru_data);
893 }
894
895 if (workload_exec_errno) {
896 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
897 pr_err("Workload failed: %s\n", emsg);
898 return -1;
899 }
900
901 if (WIFSIGNALED(status))
902 psignal(WTERMSIG(status), argv[0]);
903 } else {
904 status = dispatch_events(forks, timeout, interval, ×);
905 }
906
907 disable_counters();
908
909 t1 = rdclock();
910
911 if (stat_config.walltime_run_table)
912 stat_config.walltime_run[run_idx] = t1 - t0;
913
914 if (interval && stat_config.summary) {
915 stat_config.interval = 0;
916 stat_config.stop_read_counter = true;
917 init_stats(&walltime_nsecs_stats);
918 update_stats(&walltime_nsecs_stats, t1 - t0);
919
920 evlist__copy_prev_raw_counts(evsel_list);
921 evlist__reset_prev_raw_counts(evsel_list);
922 evlist__reset_aggr_stats(evsel_list);
923 } else {
924 update_stats(&walltime_nsecs_stats, t1 - t0);
925 update_rusage_stats(&ru_stats, &stat_config.ru_data);
926 }
927
928 /*
929 * Closing a group leader splits the group, and as we only disable
930 * group leaders, results in remaining events becoming enabled. To
931 * avoid arbitrary skew, we must read all counters before closing any
932 * group leaders.
933 */
934 if (read_counters() == 0)
935 process_counters();
936
937 /*
938 * We need to keep evsel_list alive, because it's processed
939 * later the evsel_list will be closed after.
940 */
941 if (!STAT_RECORD)
942 evlist__close(evsel_list);
943
944 return WEXITSTATUS(status);
945 }
946
947 static int run_perf_stat(int argc, const char **argv, int run_idx)
948 {
949 int ret;
950
951 if (pre_cmd) {
952 ret = system(pre_cmd);
953 if (ret)
954 return ret;
955 }
956
957 if (sync_run)
958 sync();
959
960 ret = __run_perf_stat(argc, argv, run_idx);
961 if (ret)
962 return ret;
963
964 if (post_cmd) {
965 ret = system(post_cmd);
966 if (ret)
967 return ret;
968 }
969
970 return ret;
971 }
972
973 static void print_counters(struct timespec *ts, int argc, const char **argv)
974 {
975 /* Do not print anything if we record to the pipe. */
976 if (STAT_RECORD && perf_stat.data.is_pipe)
977 return;
978 if (quiet)
979 return;
980
981 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
982 }
983
984 static volatile sig_atomic_t signr = -1;
985
986 static void skip_signal(int signo)
987 {
988 if ((child_pid == -1) || stat_config.interval)
989 done = 1;
990
991 signr = signo;
992 /*
993 * render child_pid harmless
994 * won't send SIGTERM to a random
995 * process in case of race condition
996 * and fast PID recycling
997 */
998 child_pid = -1;
999 }
1000
1001 static void sig_atexit(void)
1002 {
1003 sigset_t set, oset;
1004
1005 /*
1006 * avoid race condition with SIGCHLD handler
1007 * in skip_signal() which is modifying child_pid
1008 * goal is to avoid send SIGTERM to a random
1009 * process
1010 */
1011 sigemptyset(&set);
1012 sigaddset(&set, SIGCHLD);
1013 sigprocmask(SIG_BLOCK, &set, &oset);
1014
1015 if (child_pid != -1)
1016 kill(child_pid, SIGTERM);
1017
1018 sigprocmask(SIG_SETMASK, &oset, NULL);
1019
1020 if (signr == -1)
1021 return;
1022
1023 signal(signr, SIG_DFL);
1024 kill(getpid(), signr);
1025 }
1026
1027 void perf_stat__set_big_num(int set)
1028 {
1029 stat_config.big_num = (set != 0);
1030 }
1031
1032 void perf_stat__set_no_csv_summary(int set)
1033 {
1034 stat_config.no_csv_summary = (set != 0);
1035 }
1036
1037 static int stat__set_big_num(const struct option *opt __maybe_unused,
1038 const char *s __maybe_unused, int unset)
1039 {
1040 big_num_opt = unset ? 0 : 1;
1041 perf_stat__set_big_num(!unset);
1042 return 0;
1043 }
1044
1045 static int enable_metric_only(const struct option *opt __maybe_unused,
1046 const char *s __maybe_unused, int unset)
1047 {
1048 force_metric_only = true;
1049 stat_config.metric_only = !unset;
1050 return 0;
1051 }
1052
1053 static int append_metric_groups(const struct option *opt __maybe_unused,
1054 const char *str,
1055 int unset __maybe_unused)
1056 {
1057 if (metrics) {
1058 char *tmp;
1059
1060 if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
1061 return -ENOMEM;
1062 free(metrics);
1063 metrics = tmp;
1064 } else {
1065 metrics = strdup(str);
1066 if (!metrics)
1067 return -ENOMEM;
1068 }
1069 return 0;
1070 }
1071
1072 static int parse_control_option(const struct option *opt,
1073 const char *str,
1074 int unset __maybe_unused)
1075 {
1076 struct perf_stat_config *config = opt->value;
1077
1078 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1079 }
1080
1081 static int parse_stat_cgroups(const struct option *opt,
1082 const char *str, int unset)
1083 {
1084 if (stat_config.cgroup_list) {
1085 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1086 return -1;
1087 }
1088
1089 return parse_cgroups(opt, str, unset);
1090 }
1091
1092 static int parse_cputype(const struct option *opt,
1093 const char *str,
1094 int unset __maybe_unused)
1095 {
1096 const struct perf_pmu *pmu;
1097 struct evlist *evlist = *(struct evlist **)opt->value;
1098
1099 if (!list_empty(&evlist->core.entries)) {
1100 fprintf(stderr, "Must define cputype before events/metrics\n");
1101 return -1;
1102 }
1103
1104 pmu = perf_pmus__pmu_for_pmu_filter(str);
1105 if (!pmu) {
1106 fprintf(stderr, "--cputype %s is not supported!\n", str);
1107 return -1;
1108 }
1109 parse_events_option_args.pmu_filter = pmu->name;
1110
1111 return 0;
1112 }
1113
1114 static int parse_cache_level(const struct option *opt,
1115 const char *str,
1116 int unset __maybe_unused)
1117 {
1118 int level;
1119 struct opt_aggr_mode *opt_aggr_mode = (struct opt_aggr_mode *)opt->value;
1120 u32 *aggr_level = (u32 *)opt->data;
1121
1122 /*
1123 * If no string is specified, aggregate based on the topology of
1124 * Last Level Cache (LLC). Since the LLC level can change from
1125 * architecture to architecture, set level greater than
1126 * MAX_CACHE_LVL which will be interpreted as LLC.
1127 */
1128 if (str == NULL) {
1129 level = MAX_CACHE_LVL + 1;
1130 goto out;
1131 }
1132
1133 /*
1134 * The format to specify cache level is LX or lX where X is the
1135 * cache level.
1136 */
1137 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) {
1138 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1139 MAX_CACHE_LVL,
1140 MAX_CACHE_LVL);
1141 return -EINVAL;
1142 }
1143
1144 level = atoi(&str[1]);
1145 if (level < 1) {
1146 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1147 MAX_CACHE_LVL,
1148 MAX_CACHE_LVL);
1149 return -EINVAL;
1150 }
1151
1152 if (level > MAX_CACHE_LVL) {
1153 pr_err("perf only supports max cache level of %d.\n"
1154 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL);
1155 return -EINVAL;
1156 }
1157 out:
1158 opt_aggr_mode->cache = true;
1159 *aggr_level = level;
1160 return 0;
1161 }
1162
1163 /**
1164 * Calculate the cache instance ID from the map in
1165 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1166 * Cache instance ID is the first CPU reported in the shared_cpu_list file.
1167 */
1168 static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)
1169 {
1170 int id;
1171 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map);
1172
1173 /*
1174 * If the map contains no CPU, consider the current CPU to
1175 * be the first online CPU in the cache domain else use the
1176 * first online CPU of the cache domain as the ID.
1177 */
1178 id = perf_cpu_map__min(cpu_map).cpu;
1179 if (id == -1)
1180 id = cpu.cpu;
1181
1182 /* Free the perf_cpu_map used to find the cache ID */
1183 perf_cpu_map__put(cpu_map);
1184
1185 return id;
1186 }
1187
1188 /**
1189 * cpu__get_cache_id - Returns 0 if successful in populating the
1190 * cache level and cache id. Cache level is read from
1191 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID
1192 * is the first CPU reported by
1193 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1194 */
1195 static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache)
1196 {
1197 int ret = 0;
1198 u32 cache_level = stat_config.aggr_level;
1199 struct cpu_cache_level caches[MAX_CACHE_LVL];
1200 u32 i = 0, caches_cnt = 0;
1201
1202 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1203 cache->cache = -1;
1204
1205 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt);
1206 if (ret) {
1207 /*
1208 * If caches_cnt is not 0, cpu_cache_level data
1209 * was allocated when building the topology.
1210 * Free the allocated data before returning.
1211 */
1212 if (caches_cnt)
1213 goto free_caches;
1214
1215 return ret;
1216 }
1217
1218 if (!caches_cnt)
1219 return -1;
1220
1221 /*
1222 * Save the data for the highest level if no
1223 * level was specified by the user.
1224 */
1225 if (cache_level > MAX_CACHE_LVL) {
1226 int max_level_index = 0;
1227
1228 for (i = 1; i < caches_cnt; ++i) {
1229 if (caches[i].level > caches[max_level_index].level)
1230 max_level_index = i;
1231 }
1232
1233 cache->cache_lvl = caches[max_level_index].level;
1234 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map);
1235
1236 /* Reset i to 0 to free entire caches[] */
1237 i = 0;
1238 goto free_caches;
1239 }
1240
1241 for (i = 0; i < caches_cnt; ++i) {
1242 if (caches[i].level == cache_level) {
1243 cache->cache_lvl = cache_level;
1244 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1245 }
1246
1247 cpu_cache_level__free(&caches[i]);
1248 }
1249
1250 free_caches:
1251 /*
1252 * Free all the allocated cpu_cache_level data.
1253 */
1254 while (i < caches_cnt)
1255 cpu_cache_level__free(&caches[i++]);
1256
1257 return ret;
1258 }
1259
1260 /**
1261 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache
1262 * level, die and socket populated with the cache instache ID, cache level,
1263 * die and socket for cpu. The function signature is compatible with
1264 * aggr_cpu_id_get_t.
1265 */
1266 static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data)
1267 {
1268 int ret;
1269 struct aggr_cpu_id id;
1270 struct perf_cache cache;
1271
1272 id = aggr_cpu_id__die(cpu, data);
1273 if (aggr_cpu_id__is_empty(&id))
1274 return id;
1275
1276 ret = cpu__get_cache_details(cpu, &cache);
1277 if (ret)
1278 return id;
1279
1280 id.cache_lvl = cache.cache_lvl;
1281 id.cache = cache.cache;
1282 return id;
1283 }
1284
1285 static const char *const aggr_mode__string[] = {
1286 [AGGR_CORE] = "core",
1287 [AGGR_CACHE] = "cache",
1288 [AGGR_CLUSTER] = "cluster",
1289 [AGGR_DIE] = "die",
1290 [AGGR_GLOBAL] = "global",
1291 [AGGR_NODE] = "node",
1292 [AGGR_NONE] = "none",
1293 [AGGR_SOCKET] = "socket",
1294 [AGGR_THREAD] = "thread",
1295 [AGGR_UNSET] = "unset",
1296 };
1297
1298 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1299 struct perf_cpu cpu)
1300 {
1301 return aggr_cpu_id__socket(cpu, /*data=*/NULL);
1302 }
1303
1304 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1305 struct perf_cpu cpu)
1306 {
1307 return aggr_cpu_id__die(cpu, /*data=*/NULL);
1308 }
1309
1310 static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused,
1311 struct perf_cpu cpu)
1312 {
1313 return aggr_cpu_id__cache(cpu, /*data=*/NULL);
1314 }
1315
1316 static struct aggr_cpu_id perf_stat__get_cluster(struct perf_stat_config *config __maybe_unused,
1317 struct perf_cpu cpu)
1318 {
1319 return aggr_cpu_id__cluster(cpu, /*data=*/NULL);
1320 }
1321
1322 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1323 struct perf_cpu cpu)
1324 {
1325 return aggr_cpu_id__core(cpu, /*data=*/NULL);
1326 }
1327
1328 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1329 struct perf_cpu cpu)
1330 {
1331 return aggr_cpu_id__node(cpu, /*data=*/NULL);
1332 }
1333
1334 static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
1335 struct perf_cpu cpu)
1336 {
1337 return aggr_cpu_id__global(cpu, /*data=*/NULL);
1338 }
1339
1340 static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
1341 struct perf_cpu cpu)
1342 {
1343 return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1344 }
1345
1346 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1347 aggr_get_id_t get_id, struct perf_cpu cpu)
1348 {
1349 struct aggr_cpu_id id;
1350
1351 /* per-process mode - should use global aggr mode */
1352 if (cpu.cpu == -1)
1353 return get_id(config, cpu);
1354
1355 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
1356 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
1357
1358 id = config->cpus_aggr_map->map[cpu.cpu];
1359 return id;
1360 }
1361
1362 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1363 struct perf_cpu cpu)
1364 {
1365 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
1366 }
1367
1368 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1369 struct perf_cpu cpu)
1370 {
1371 return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
1372 }
1373
1374 static struct aggr_cpu_id perf_stat__get_cluster_cached(struct perf_stat_config *config,
1375 struct perf_cpu cpu)
1376 {
1377 return perf_stat__get_aggr(config, perf_stat__get_cluster, cpu);
1378 }
1379
1380 static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config,
1381 struct perf_cpu cpu)
1382 {
1383 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu);
1384 }
1385
1386 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1387 struct perf_cpu cpu)
1388 {
1389 return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
1390 }
1391
1392 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1393 struct perf_cpu cpu)
1394 {
1395 return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
1396 }
1397
1398 static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
1399 struct perf_cpu cpu)
1400 {
1401 return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
1402 }
1403
1404 static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
1405 struct perf_cpu cpu)
1406 {
1407 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
1408 }
1409
1410 static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
1411 {
1412 switch (aggr_mode) {
1413 case AGGR_SOCKET:
1414 return aggr_cpu_id__socket;
1415 case AGGR_DIE:
1416 return aggr_cpu_id__die;
1417 case AGGR_CLUSTER:
1418 return aggr_cpu_id__cluster;
1419 case AGGR_CACHE:
1420 return aggr_cpu_id__cache;
1421 case AGGR_CORE:
1422 return aggr_cpu_id__core;
1423 case AGGR_NODE:
1424 return aggr_cpu_id__node;
1425 case AGGR_NONE:
1426 return aggr_cpu_id__cpu;
1427 case AGGR_GLOBAL:
1428 return aggr_cpu_id__global;
1429 case AGGR_THREAD:
1430 case AGGR_UNSET:
1431 case AGGR_MAX:
1432 default:
1433 return NULL;
1434 }
1435 }
1436
1437 static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
1438 {
1439 switch (aggr_mode) {
1440 case AGGR_SOCKET:
1441 return perf_stat__get_socket_cached;
1442 case AGGR_DIE:
1443 return perf_stat__get_die_cached;
1444 case AGGR_CLUSTER:
1445 return perf_stat__get_cluster_cached;
1446 case AGGR_CACHE:
1447 return perf_stat__get_cache_id_cached;
1448 case AGGR_CORE:
1449 return perf_stat__get_core_cached;
1450 case AGGR_NODE:
1451 return perf_stat__get_node_cached;
1452 case AGGR_NONE:
1453 return perf_stat__get_cpu_cached;
1454 case AGGR_GLOBAL:
1455 return perf_stat__get_global_cached;
1456 case AGGR_THREAD:
1457 case AGGR_UNSET:
1458 case AGGR_MAX:
1459 default:
1460 return NULL;
1461 }
1462 }
1463
1464 static int perf_stat_init_aggr_mode(void)
1465 {
1466 int nr;
1467 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
1468
1469 if (get_id) {
1470 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1471 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1472 get_id, /*data=*/NULL, needs_sort);
1473 if (!stat_config.aggr_map) {
1474 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1475 return -1;
1476 }
1477 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
1478 }
1479
1480 if (stat_config.aggr_mode == AGGR_THREAD) {
1481 nr = perf_thread_map__nr(evsel_list->core.threads);
1482 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1483 if (stat_config.aggr_map == NULL)
1484 return -ENOMEM;
1485
1486 for (int s = 0; s < nr; s++) {
1487 struct aggr_cpu_id id = aggr_cpu_id__empty();
1488
1489 id.thread_idx = s;
1490 stat_config.aggr_map->map[s] = id;
1491 }
1492 return 0;
1493 }
1494
1495 /*
1496 * The evsel_list->cpus is the base we operate on,
1497 * taking the highest cpu number to be the size of
1498 * the aggregation translate cpumap.
1499 */
1500 if (!perf_cpu_map__is_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))
1501 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
1502 else
1503 nr = 0;
1504 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1505 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1506 }
1507
1508 static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1509 {
1510 free(map);
1511 }
1512
1513 static void perf_stat__exit_aggr_mode(void)
1514 {
1515 cpu_aggr_map__delete(stat_config.aggr_map);
1516 cpu_aggr_map__delete(stat_config.cpus_aggr_map);
1517 stat_config.aggr_map = NULL;
1518 stat_config.cpus_aggr_map = NULL;
1519 }
1520
1521 static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
1522 {
1523 struct perf_env *env = data;
1524 struct aggr_cpu_id id = aggr_cpu_id__empty();
1525
1526 if (cpu.cpu != -1)
1527 id.socket = env->cpu[cpu.cpu].socket_id;
1528
1529 return id;
1530 }
1531
1532 static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
1533 {
1534 struct perf_env *env = data;
1535 struct aggr_cpu_id id = aggr_cpu_id__empty();
1536
1537 if (cpu.cpu != -1) {
1538 /*
1539 * die_id is relative to socket, so start
1540 * with the socket ID and then add die to
1541 * make a unique ID.
1542 */
1543 id.socket = env->cpu[cpu.cpu].socket_id;
1544 id.die = env->cpu[cpu.cpu].die_id;
1545 }
1546
1547 return id;
1548 }
1549
1550 static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env,
1551 u32 cache_level, struct aggr_cpu_id *id)
1552 {
1553 int i;
1554 int caches_cnt = env->caches_cnt;
1555 struct cpu_cache_level *caches = env->caches;
1556
1557 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1558 id->cache = -1;
1559
1560 if (!caches_cnt)
1561 return;
1562
1563 for (i = caches_cnt - 1; i > -1; --i) {
1564 struct perf_cpu_map *cpu_map;
1565 int map_contains_cpu;
1566
1567 /*
1568 * If user has not specified a level, find the fist level with
1569 * the cpu in the map. Since building the map is expensive, do
1570 * this only if levels match.
1571 */
1572 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level)
1573 continue;
1574
1575 cpu_map = perf_cpu_map__new(caches[i].map);
1576 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu);
1577 perf_cpu_map__put(cpu_map);
1578
1579 if (map_contains_cpu != -1) {
1580 id->cache_lvl = caches[i].level;
1581 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1582 return;
1583 }
1584 }
1585 }
1586
1587 static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu,
1588 void *data)
1589 {
1590 struct perf_env *env = data;
1591 struct aggr_cpu_id id = aggr_cpu_id__empty();
1592
1593 if (cpu.cpu != -1) {
1594 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level;
1595
1596 id.socket = env->cpu[cpu.cpu].socket_id;
1597 id.die = env->cpu[cpu.cpu].die_id;
1598 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id);
1599 }
1600
1601 return id;
1602 }
1603
1604 static struct aggr_cpu_id perf_env__get_cluster_aggr_by_cpu(struct perf_cpu cpu,
1605 void *data)
1606 {
1607 struct perf_env *env = data;
1608 struct aggr_cpu_id id = aggr_cpu_id__empty();
1609
1610 if (cpu.cpu != -1) {
1611 id.socket = env->cpu[cpu.cpu].socket_id;
1612 id.die = env->cpu[cpu.cpu].die_id;
1613 id.cluster = env->cpu[cpu.cpu].cluster_id;
1614 }
1615
1616 return id;
1617 }
1618
1619 static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
1620 {
1621 struct perf_env *env = data;
1622 struct aggr_cpu_id id = aggr_cpu_id__empty();
1623
1624 if (cpu.cpu != -1) {
1625 /*
1626 * core_id is relative to socket, die and cluster, we need a
1627 * global id. So we set socket, die id, cluster id and core id.
1628 */
1629 id.socket = env->cpu[cpu.cpu].socket_id;
1630 id.die = env->cpu[cpu.cpu].die_id;
1631 id.cluster = env->cpu[cpu.cpu].cluster_id;
1632 id.core = env->cpu[cpu.cpu].core_id;
1633 }
1634
1635 return id;
1636 }
1637
1638 static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
1639 {
1640 struct perf_env *env = data;
1641 struct aggr_cpu_id id = aggr_cpu_id__empty();
1642
1643 if (cpu.cpu != -1) {
1644 /*
1645 * core_id is relative to socket and die,
1646 * we need a global id. So we set
1647 * socket, die id and core id
1648 */
1649 id.socket = env->cpu[cpu.cpu].socket_id;
1650 id.die = env->cpu[cpu.cpu].die_id;
1651 id.core = env->cpu[cpu.cpu].core_id;
1652 id.cpu = cpu;
1653 }
1654
1655 return id;
1656 }
1657
1658 static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
1659 {
1660 struct aggr_cpu_id id = aggr_cpu_id__empty();
1661
1662 id.node = perf_env__numa_node(data, cpu);
1663 return id;
1664 }
1665
1666 static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
1667 void *data __maybe_unused)
1668 {
1669 struct aggr_cpu_id id = aggr_cpu_id__empty();
1670
1671 /* it always aggregates to the cpu 0 */
1672 id.cpu = (struct perf_cpu){ .cpu = 0 };
1673 return id;
1674 }
1675
1676 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1677 struct perf_cpu cpu)
1678 {
1679 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1680 }
1681 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1682 struct perf_cpu cpu)
1683 {
1684 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1685 }
1686
1687 static struct aggr_cpu_id perf_stat__get_cluster_file(struct perf_stat_config *config __maybe_unused,
1688 struct perf_cpu cpu)
1689 {
1690 return perf_env__get_cluster_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1691 }
1692
1693 static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused,
1694 struct perf_cpu cpu)
1695 {
1696 return perf_env__get_cache_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1697 }
1698
1699 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1700 struct perf_cpu cpu)
1701 {
1702 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1703 }
1704
1705 static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
1706 struct perf_cpu cpu)
1707 {
1708 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1709 }
1710
1711 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1712 struct perf_cpu cpu)
1713 {
1714 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1715 }
1716
1717 static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
1718 struct perf_cpu cpu)
1719 {
1720 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1721 }
1722
1723 static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
1724 {
1725 switch (aggr_mode) {
1726 case AGGR_SOCKET:
1727 return perf_env__get_socket_aggr_by_cpu;
1728 case AGGR_DIE:
1729 return perf_env__get_die_aggr_by_cpu;
1730 case AGGR_CLUSTER:
1731 return perf_env__get_cluster_aggr_by_cpu;
1732 case AGGR_CACHE:
1733 return perf_env__get_cache_aggr_by_cpu;
1734 case AGGR_CORE:
1735 return perf_env__get_core_aggr_by_cpu;
1736 case AGGR_NODE:
1737 return perf_env__get_node_aggr_by_cpu;
1738 case AGGR_GLOBAL:
1739 return perf_env__get_global_aggr_by_cpu;
1740 case AGGR_NONE:
1741 return perf_env__get_cpu_aggr_by_cpu;
1742 case AGGR_THREAD:
1743 case AGGR_UNSET:
1744 case AGGR_MAX:
1745 default:
1746 return NULL;
1747 }
1748 }
1749
1750 static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
1751 {
1752 switch (aggr_mode) {
1753 case AGGR_SOCKET:
1754 return perf_stat__get_socket_file;
1755 case AGGR_DIE:
1756 return perf_stat__get_die_file;
1757 case AGGR_CLUSTER:
1758 return perf_stat__get_cluster_file;
1759 case AGGR_CACHE:
1760 return perf_stat__get_cache_file;
1761 case AGGR_CORE:
1762 return perf_stat__get_core_file;
1763 case AGGR_NODE:
1764 return perf_stat__get_node_file;
1765 case AGGR_GLOBAL:
1766 return perf_stat__get_global_file;
1767 case AGGR_NONE:
1768 return perf_stat__get_cpu_file;
1769 case AGGR_THREAD:
1770 case AGGR_UNSET:
1771 case AGGR_MAX:
1772 default:
1773 return NULL;
1774 }
1775 }
1776
1777 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1778 {
1779 struct perf_env *env = &st->session->header.env;
1780 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
1781 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1782
1783 if (stat_config.aggr_mode == AGGR_THREAD) {
1784 int nr = perf_thread_map__nr(evsel_list->core.threads);
1785
1786 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1787 if (stat_config.aggr_map == NULL)
1788 return -ENOMEM;
1789
1790 for (int s = 0; s < nr; s++) {
1791 struct aggr_cpu_id id = aggr_cpu_id__empty();
1792
1793 id.thread_idx = s;
1794 stat_config.aggr_map->map[s] = id;
1795 }
1796 return 0;
1797 }
1798
1799 if (!get_id)
1800 return 0;
1801
1802 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1803 get_id, env, needs_sort);
1804 if (!stat_config.aggr_map) {
1805 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1806 return -1;
1807 }
1808 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
1809 return 0;
1810 }
1811
1812 /*
1813 * Add default attributes, if there were no attributes specified or
1814 * if -d/--detailed, -d -d or -d -d -d is used:
1815 */
1816 static int add_default_attributes(void)
1817 {
1818 struct perf_event_attr default_attrs0[] = {
1819
1820 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1821 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1822 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1823 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1824
1825 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1826 };
1827 struct perf_event_attr frontend_attrs[] = {
1828 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1829 };
1830 struct perf_event_attr backend_attrs[] = {
1831 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1832 };
1833 struct perf_event_attr default_attrs1[] = {
1834 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1835 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1836 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1837
1838 };
1839
1840 /*
1841 * Detailed stats (-d), covering the L1 and last level data caches:
1842 */
1843 struct perf_event_attr detailed_attrs[] = {
1844
1845 { .type = PERF_TYPE_HW_CACHE,
1846 .config =
1847 PERF_COUNT_HW_CACHE_L1D << 0 |
1848 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1849 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1850
1851 { .type = PERF_TYPE_HW_CACHE,
1852 .config =
1853 PERF_COUNT_HW_CACHE_L1D << 0 |
1854 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1855 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1856
1857 { .type = PERF_TYPE_HW_CACHE,
1858 .config =
1859 PERF_COUNT_HW_CACHE_LL << 0 |
1860 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1861 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1862
1863 { .type = PERF_TYPE_HW_CACHE,
1864 .config =
1865 PERF_COUNT_HW_CACHE_LL << 0 |
1866 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1867 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1868 };
1869
1870 /*
1871 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1872 */
1873 struct perf_event_attr very_detailed_attrs[] = {
1874
1875 { .type = PERF_TYPE_HW_CACHE,
1876 .config =
1877 PERF_COUNT_HW_CACHE_L1I << 0 |
1878 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1879 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1880
1881 { .type = PERF_TYPE_HW_CACHE,
1882 .config =
1883 PERF_COUNT_HW_CACHE_L1I << 0 |
1884 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1885 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1886
1887 { .type = PERF_TYPE_HW_CACHE,
1888 .config =
1889 PERF_COUNT_HW_CACHE_DTLB << 0 |
1890 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1891 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1892
1893 { .type = PERF_TYPE_HW_CACHE,
1894 .config =
1895 PERF_COUNT_HW_CACHE_DTLB << 0 |
1896 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1897 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1898
1899 { .type = PERF_TYPE_HW_CACHE,
1900 .config =
1901 PERF_COUNT_HW_CACHE_ITLB << 0 |
1902 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1903 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1904
1905 { .type = PERF_TYPE_HW_CACHE,
1906 .config =
1907 PERF_COUNT_HW_CACHE_ITLB << 0 |
1908 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1909 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1910
1911 };
1912
1913 /*
1914 * Very, very detailed stats (-d -d -d), adding prefetch events:
1915 */
1916 struct perf_event_attr very_very_detailed_attrs[] = {
1917
1918 { .type = PERF_TYPE_HW_CACHE,
1919 .config =
1920 PERF_COUNT_HW_CACHE_L1D << 0 |
1921 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1922 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1923
1924 { .type = PERF_TYPE_HW_CACHE,
1925 .config =
1926 PERF_COUNT_HW_CACHE_L1D << 0 |
1927 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1928 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1929 };
1930
1931 struct perf_event_attr default_null_attrs[] = {};
1932 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
1933
1934 /* Set attrs if no event is selected and !null_run: */
1935 if (stat_config.null_run)
1936 return 0;
1937
1938 if (transaction_run) {
1939 /* Handle -T as -M transaction. Once platform specific metrics
1940 * support has been added to the json files, all architectures
1941 * will use this approach. To determine transaction support
1942 * on an architecture test for such a metric name.
1943 */
1944 if (!metricgroup__has_metric(pmu, "transaction")) {
1945 pr_err("Missing transaction metrics\n");
1946 return -1;
1947 }
1948 return metricgroup__parse_groups(evsel_list, pmu, "transaction",
1949 stat_config.metric_no_group,
1950 stat_config.metric_no_merge,
1951 stat_config.metric_no_threshold,
1952 stat_config.user_requested_cpu_list,
1953 stat_config.system_wide,
1954 stat_config.hardware_aware_grouping,
1955 &stat_config.metric_events);
1956 }
1957
1958 if (smi_cost) {
1959 int smi;
1960
1961 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1962 pr_err("freeze_on_smi is not supported.\n");
1963 return -1;
1964 }
1965
1966 if (!smi) {
1967 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1968 fprintf(stderr, "Failed to set freeze_on_smi.\n");
1969 return -1;
1970 }
1971 smi_reset = true;
1972 }
1973
1974 if (!metricgroup__has_metric(pmu, "smi")) {
1975 pr_err("Missing smi metrics\n");
1976 return -1;
1977 }
1978
1979 if (!force_metric_only)
1980 stat_config.metric_only = true;
1981
1982 return metricgroup__parse_groups(evsel_list, pmu, "smi",
1983 stat_config.metric_no_group,
1984 stat_config.metric_no_merge,
1985 stat_config.metric_no_threshold,
1986 stat_config.user_requested_cpu_list,
1987 stat_config.system_wide,
1988 stat_config.hardware_aware_grouping,
1989 &stat_config.metric_events);
1990 }
1991
1992 if (topdown_run) {
1993 unsigned int max_level = metricgroups__topdown_max_level();
1994 char str[] = "TopdownL1";
1995
1996 if (!force_metric_only)
1997 stat_config.metric_only = true;
1998
1999 if (!max_level) {
2000 pr_err("Topdown requested but the topdown metric groups aren't present.\n"
2001 "(See perf list the metric groups have names like TopdownL1)\n");
2002 return -1;
2003 }
2004 if (stat_config.topdown_level > max_level) {
2005 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
2006 return -1;
2007 } else if (!stat_config.topdown_level)
2008 stat_config.topdown_level = 1;
2009
2010 if (!stat_config.interval && !stat_config.metric_only) {
2011 fprintf(stat_config.output,
2012 "Topdown accuracy may decrease when measuring long periods.\n"
2013 "Please print the result regularly, e.g. -I1000\n");
2014 }
2015 str[8] = stat_config.topdown_level + '';
2016 if (metricgroup__parse_groups(evsel_list,
2017 pmu, str,
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 return -1;
2026 }
2027
2028 if (!stat_config.topdown_level)
2029 stat_config.topdown_level = 1;
2030
2031 if (!evsel_list->core.nr_entries) {
2032 /* No events so add defaults. */
2033 if (target__has_cpu(&target))
2034 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
2035
2036 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
2037 return -1;
2038 if (perf_pmus__have_event("cpu", "stalled-cycles-frontend")) {
2039 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
2040 return -1;
2041 }
2042 if (perf_pmus__have_event("cpu", "stalled-cycles-backend")) {
2043 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)
2044 return -1;
2045 }
2046 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
2047 return -1;
2048 /*
2049 * Add TopdownL1 metrics if they exist. To minimize
2050 * multiplexing, don't request threshold computation.
2051 */
2052 if (metricgroup__has_metric(pmu, "Default")) {
2053 struct evlist *metric_evlist = evlist__new();
2054 struct evsel *metric_evsel;
2055
2056 if (!metric_evlist)
2057 return -1;
2058
2059 if (metricgroup__parse_groups(metric_evlist, pmu, "Default",
2060 /*metric_no_group=*/false,
2061 /*metric_no_merge=*/false,
2062 /*metric_no_threshold=*/true,
2063 stat_config.user_requested_cpu_list,
2064 stat_config.system_wide,
2065 stat_config.hardware_aware_grouping,
2066 &stat_config.metric_events) < 0)
2067 return -1;
2068
2069 evlist__for_each_entry(metric_evlist, metric_evsel) {
2070 metric_evsel->skippable = true;
2071 metric_evsel->default_metricgroup = true;
2072 }
2073 evlist__splice_list_tail(evsel_list, &metric_evlist->core.entries);
2074 evlist__delete(metric_evlist);
2075 }
2076
2077 /* Platform specific attrs */
2078 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0)
2079 return -1;
2080 }
2081
2082 /* Detailed events get appended to the event list: */
2083
2084 if (detailed_run < 1)
2085 return 0;
2086
2087 /* Append detailed run extra attributes: */
2088 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
2089 return -1;
2090
2091 if (detailed_run < 2)
2092 return 0;
2093
2094 /* Append very detailed run extra attributes: */
2095 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
2096 return -1;
2097
2098 if (detailed_run < 3)
2099 return 0;
2100
2101 /* Append very, very detailed run extra attributes: */
2102 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
2103 }
2104
2105 static const char * const stat_record_usage[] = {
2106 "perf stat record [<options>]",
2107 NULL,
2108 };
2109
2110 static void init_features(struct perf_session *session)
2111 {
2112 int feat;
2113
2114 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2115 perf_header__set_feat(&session->header, feat);
2116
2117 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
2118 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2119 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2120 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2121 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2122 }
2123
2124 static int __cmd_record(const struct option stat_options[], struct opt_aggr_mode *opt_mode,
2125 int argc, const char **argv)
2126 {
2127 struct perf_session *session;
2128 struct perf_data *data = &perf_stat.data;
2129
2130 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2131 PARSE_OPT_STOP_AT_NON_OPTION);
2132 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(opt_mode);
2133
2134 if (output_name)
2135 data->path = output_name;
2136
2137 if (stat_config.run_count != 1 || forever) {
2138 pr_err("Cannot use -r option with perf stat record.\n");
2139 return -1;
2140 }
2141
2142 session = perf_session__new(data, NULL);
2143 if (IS_ERR(session)) {
2144 pr_err("Perf session creation failed\n");
2145 return PTR_ERR(session);
2146 }
2147
2148 init_features(session);
2149
2150 session->evlist = evsel_list;
2151 perf_stat.session = session;
2152 perf_stat.record = true;
2153 return argc;
2154 }
2155
2156 static int process_stat_round_event(struct perf_session *session,
2157 union perf_event *event)
2158 {
2159 struct perf_record_stat_round *stat_round = &event->stat_round;
2160 struct timespec tsh, *ts = NULL;
2161 const char **argv = session->header.env.cmdline_argv;
2162 int argc = session->header.env.nr_cmdline;
2163
2164 process_counters();
2165
2166 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2167 update_stats(&walltime_nsecs_stats, stat_round->time);
2168
2169 if (stat_config.interval && stat_round->time) {
2170 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2171 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2172 ts = &tsh;
2173 }
2174
2175 print_counters(ts, argc, argv);
2176 return 0;
2177 }
2178
2179 static
2180 int process_stat_config_event(struct perf_session *session,
2181 union perf_event *event)
2182 {
2183 struct perf_tool *tool = session->tool;
2184 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2185
2186 perf_event__read_stat_config(&stat_config, &event->stat_config);
2187
2188 if (perf_cpu_map__is_empty(st->cpus)) {
2189 if (st->aggr_mode != AGGR_UNSET)
2190 pr_warning("warning: processing task data, aggregation mode not set\n");
2191 } else if (st->aggr_mode != AGGR_UNSET) {
2192 stat_config.aggr_mode = st->aggr_mode;
2193 }
2194
2195 if (perf_stat.data.is_pipe)
2196 perf_stat_init_aggr_mode();
2197 else
2198 perf_stat_init_aggr_mode_file(st);
2199
2200 if (stat_config.aggr_map) {
2201 int nr_aggr = stat_config.aggr_map->nr;
2202
2203 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
2204 pr_err("cannot allocate aggr counts\n");
2205 return -1;
2206 }
2207 }
2208 return 0;
2209 }
2210
2211 static int set_maps(struct perf_stat *st)
2212 {
2213 if (!st->cpus || !st->threads)
2214 return 0;
2215
2216 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2217 return -EINVAL;
2218
2219 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2220
2221 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))
2222 return -ENOMEM;
2223
2224 st->maps_allocated = true;
2225 return 0;
2226 }
2227
2228 static
2229 int process_thread_map_event(struct perf_session *session,
2230 union perf_event *event)
2231 {
2232 struct perf_tool *tool = session->tool;
2233 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2234
2235 if (st->threads) {
2236 pr_warning("Extra thread map event, ignoring.\n");
2237 return 0;
2238 }
2239
2240 st->threads = thread_map__new_event(&event->thread_map);
2241 if (!st->threads)
2242 return -ENOMEM;
2243
2244 return set_maps(st);
2245 }
2246
2247 static
2248 int process_cpu_map_event(struct perf_session *session,
2249 union perf_event *event)
2250 {
2251 struct perf_tool *tool = session->tool;
2252 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2253 struct perf_cpu_map *cpus;
2254
2255 if (st->cpus) {
2256 pr_warning("Extra cpu map event, ignoring.\n");
2257 return 0;
2258 }
2259
2260 cpus = cpu_map__new_data(&event->cpu_map.data);
2261 if (!cpus)
2262 return -ENOMEM;
2263
2264 st->cpus = cpus;
2265 return set_maps(st);
2266 }
2267
2268 static const char * const stat_report_usage[] = {
2269 "perf stat report [<options>]",
2270 NULL,
2271 };
2272
2273 static struct perf_stat perf_stat = {
2274 .tool = {
2275 .attr = perf_event__process_attr,
2276 .event_update = perf_event__process_event_update,
2277 .thread_map = process_thread_map_event,
2278 .cpu_map = process_cpu_map_event,
2279 .stat_config = process_stat_config_event,
2280 .stat = perf_event__process_stat_event,
2281 .stat_round = process_stat_round_event,
2282 },
2283 .aggr_mode = AGGR_UNSET,
2284 .aggr_level = 0,
2285 };
2286
2287 static int __cmd_report(int argc, const char **argv)
2288 {
2289 struct perf_session *session;
2290 const struct option options[] = {
2291 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2292 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2293 "aggregate counts per processor socket", AGGR_SOCKET),
2294 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2295 "aggregate counts per processor die", AGGR_DIE),
2296 OPT_SET_UINT(0, "per-cluster", &perf_stat.aggr_mode,
2297 "aggregate counts perf processor cluster", AGGR_CLUSTER),
2298 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level,
2299 "cache level",
2300 "aggregate count at this cache level (Default: LLC)",
2301 parse_cache_level),
2302 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2303 "aggregate counts per physical processor core", AGGR_CORE),
2304 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2305 "aggregate counts per numa node", AGGR_NODE),
2306 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2307 "disable CPU count aggregation", AGGR_NONE),
2308 OPT_END()
2309 };
2310 struct stat st;
2311 int ret;
2312
2313 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2314
2315 if (!input_name || !strlen(input_name)) {
2316 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2317 input_name = "-";
2318 else
2319 input_name = "perf.data";
2320 }
2321
2322 perf_stat.data.path = input_name;
2323 perf_stat.data.mode = PERF_DATA_MODE_READ;
2324
2325 session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2326 if (IS_ERR(session))
2327 return PTR_ERR(session);
2328
2329 perf_stat.session = session;
2330 stat_config.output = stderr;
2331 evlist__delete(evsel_list);
2332 evsel_list = session->evlist;
2333
2334 ret = perf_session__process_events(session);
2335 if (ret)
2336 return ret;
2337
2338 perf_session__delete(session);
2339 return 0;
2340 }
2341
2342 static void setup_system_wide(int forks)
2343 {
2344 /*
2345 * Make system wide (-a) the default target if
2346 * no target was specified and one of following
2347 * conditions is met:
2348 *
2349 * - there's no workload specified
2350 * - there is workload specified but all requested
2351 * events are system wide events
2352 */
2353 if (!target__none(&target))
2354 return;
2355
2356 if (!forks)
2357 target.system_wide = true;
2358 else {
2359 struct evsel *counter;
2360
2361 evlist__for_each_entry(evsel_list, counter) {
2362 if (!counter->core.requires_cpu &&
2363 !evsel__name_is(counter, "duration_time")) {
2364 return;
2365 }
2366 }
2367
2368 if (evsel_list->core.nr_entries)
2369 target.system_wide = true;
2370 }
2371 }
2372
2373 int cmd_stat(int argc, const char **argv)
2374 {
2375 struct opt_aggr_mode opt_mode = {};
2376 struct option stat_options[] = {
2377 OPT_BOOLEAN('T', "transaction", &transaction_run,
2378 "hardware transaction statistics"),
2379 OPT_CALLBACK('e', "event", &parse_events_option_args, "event",
2380 "event selector. use 'perf list' to list available events",
2381 parse_events_option),
2382 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
2383 "event filter", parse_filter),
2384 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
2385 "child tasks do not inherit counters"),
2386 OPT_STRING('p', "pid", &target.pid, "pid",
2387 "stat events on existing process id"),
2388 OPT_STRING('t', "tid", &target.tid, "tid",
2389 "stat events on existing thread id"),
2390 #ifdef HAVE_BPF_SKEL
2391 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
2392 "stat events on existing bpf program id"),
2393 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
2394 "use bpf program to count events"),
2395 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
2396 "path to perf_event_attr map"),
2397 #endif
2398 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
2399 "system-wide collection from all CPUs"),
2400 OPT_BOOLEAN(0, "scale", &stat_config.scale,
2401 "Use --no-scale to disable counter scaling for multiplexing"),
2402 OPT_INCR('v', "verbose", &verbose,
2403 "be more verbose (show counter open errors, etc)"),
2404 OPT_INTEGER('r', "repeat", &stat_config.run_count,
2405 "repeat command and print average + stddev (max: 100, forever: 0)"),
2406 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
2407 "display details about each run (only with -r option)"),
2408 OPT_BOOLEAN('n', "null", &stat_config.null_run,
2409 "null run - dont start any counters"),
2410 OPT_INCR('d', "detailed", &detailed_run,
2411 "detailed run - start a lot of events"),
2412 OPT_BOOLEAN('S', "sync", &sync_run,
2413 "call sync() before starting a run"),
2414 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
2415 "print large numbers with thousands\' separators",
2416 stat__set_big_num),
2417 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
2418 "list of cpus to monitor in system-wide"),
2419 OPT_BOOLEAN('A', "no-aggr", &opt_mode.no_aggr,
2420 "disable aggregation across CPUs or PMUs"),
2421 OPT_BOOLEAN(0, "no-merge", &opt_mode.no_aggr,
2422 "disable aggregation the same as -A or -no-aggr"),
2423 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
2424 "Merge identical named hybrid events"),
2425 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
2426 "print counts with custom separator"),
2427 OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
2428 "print counts in JSON format"),
2429 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
2430 "monitor event in cgroup name only", parse_stat_cgroups),
2431 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
2432 "expand events for each cgroup"),
2433 OPT_STRING('o', "output", &output_name, "file", "output file name"),
2434 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
2435 OPT_INTEGER(0, "log-fd", &output_fd,
2436 "log output to fd, instead of stderr"),
2437 OPT_STRING(0, "pre", &pre_cmd, "command",
2438 "command to run prior to the measured command"),
2439 OPT_STRING(0, "post", &post_cmd, "command",
2440 "command to run after to the measured command"),
2441 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
2442 "print counts at regular interval in ms "
2443 "(overhead is possible for values <= 100ms)"),
2444 OPT_INTEGER(0, "interval-count", &stat_config.times,
2445 "print counts for fixed number of times"),
2446 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
2447 "clear screen in between new interval"),
2448 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
2449 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
2450 OPT_BOOLEAN(0, "per-socket", &opt_mode.socket,
2451 "aggregate counts per processor socket"),
2452 OPT_BOOLEAN(0, "per-die", &opt_mode.die, "aggregate counts per processor die"),
2453 OPT_BOOLEAN(0, "per-cluster", &opt_mode.cluster,
2454 "aggregate counts per processor cluster"),
2455 OPT_CALLBACK_OPTARG(0, "per-cache", &opt_mode, &stat_config.aggr_level,
2456 "cache level", "aggregate count at this cache level (Default: LLC)",
2457 parse_cache_level),
2458 OPT_BOOLEAN(0, "per-core", &opt_mode.core,
2459 "aggregate counts per physical processor core"),
2460 OPT_BOOLEAN(0, "per-thread", &opt_mode.thread, "aggregate counts per thread"),
2461 OPT_BOOLEAN(0, "per-node", &opt_mode.node, "aggregate counts per numa node"),
2462 OPT_INTEGER('D', "delay", &target.initial_delay,
2463 "ms to wait before starting measurement after program start (-1: start with events disabled)"),
2464 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
2465 "Only print computed metrics. No raw values", enable_metric_only),
2466 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
2467 "don't group metric events, impacts multiplexing"),
2468 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
2469 "don't try to share events between metrics in a group"),
2470 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,
2471 "disable adding events for the metric threshold calculation"),
2472 OPT_BOOLEAN(0, "topdown", &topdown_run,
2473 "measure top-down statistics"),
2474 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
2475 "Set the metrics level for the top-down statistics (0: max level)"),
2476 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
2477 "measure SMI cost"),
2478 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
2479 "monitor specified metrics or metric groups (separated by ,)",
2480 append_metric_groups),
2481 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
2482 "Configure all used events to run in kernel space.",
2483 PARSE_OPT_EXCLUSIVE),
2484 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
2485 "Configure all used events to run in user space.",
2486 PARSE_OPT_EXCLUSIVE),
2487 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
2488 "Use with 'percore' event qualifier to show the event "
2489 "counts of one hardware thread by sum up total hardware "
2490 "threads of same physical core"),
2491 OPT_BOOLEAN(0, "summary", &stat_config.summary,
2492 "print summary for interval mode"),
2493 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
2494 "don't print 'summary' for CSV summary output"),
2495 OPT_BOOLEAN(0, "quiet", &quiet,
2496 "don't print any output, messages or warnings (useful with record)"),
2497 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
2498 "Only enable events on applying cpu with this type "
2499 "for hybrid platform (e.g. core or atom)",
2500 parse_cputype),
2501 #ifdef HAVE_LIBPFM
2502 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
2503 "libpfm4 event selector. use 'perf list' to list available events",
2504 parse_libpfm_events_option),
2505 #endif
2506 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
2507 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
2508 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
2509 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
2510 parse_control_option),
2511 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
2512 "measure I/O performance metrics provided by arch/platform",
2513 iostat_parse),
2514 OPT_END()
2515 };
2516 const char * const stat_usage[] = {
2517 "perf stat [<options>] [<command>]",
2518 NULL
2519 };
2520 int status = -EINVAL, run_idx, err;
2521 const char *mode;
2522 FILE *output = stderr;
2523 unsigned int interval, timeout;
2524 const char * const stat_subcommands[] = { "record", "report" };
2525 char errbuf[BUFSIZ];
2526
2527 setlocale(LC_ALL, "");
2528
2529 evsel_list = evlist__new();
2530 if (evsel_list == NULL)
2531 return -ENOMEM;
2532
2533 parse_events__shrink_config_terms();
2534
2535 /* String-parsing callback-based options would segfault when negated */
2536 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2537 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2538 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2539
2540 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2541 (const char **) stat_usage,
2542 PARSE_OPT_STOP_AT_NON_OPTION);
2543
2544 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(&opt_mode);
2545
2546 if (stat_config.csv_sep) {
2547 stat_config.csv_output = true;
2548 if (!strcmp(stat_config.csv_sep, "\\t"))
2549 stat_config.csv_sep = "\t";
2550 } else
2551 stat_config.csv_sep = DEFAULT_SEPARATOR;
2552
2553 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
2554 argc = __cmd_record(stat_options, &opt_mode, argc, argv);
2555 if (argc < 0)
2556 return -1;
2557 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
2558 return __cmd_report(argc, argv);
2559
2560 interval = stat_config.interval;
2561 timeout = stat_config.timeout;
2562
2563 /*
2564 * For record command the -o is already taken care of.
2565 */
2566 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2567 output = NULL;
2568
2569 if (output_name && output_fd) {
2570 fprintf(stderr, "cannot use both --output and --log-fd\n");
2571 parse_options_usage(stat_usage, stat_options, "o", 1);
2572 parse_options_usage(NULL, stat_options, "log-fd", 0);
2573 goto out;
2574 }
2575
2576 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2577 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2578 goto out;
2579 }
2580
2581 if (stat_config.metric_only && stat_config.run_count > 1) {
2582 fprintf(stderr, "--metric-only is not supported with -r\n");
2583 goto out;
2584 }
2585
2586 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2587 fprintf(stderr, "--table is only supported with -r\n");
2588 parse_options_usage(stat_usage, stat_options, "r", 1);
2589 parse_options_usage(NULL, stat_options, "table", 0);
2590 goto out;
2591 }
2592
2593 if (output_fd < 0) {
2594 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2595 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2596 goto out;
2597 }
2598
2599 if (!output && !quiet) {
2600 struct timespec tm;
2601 mode = append_file ? "a" : "w";
2602
2603 output = fopen(output_name, mode);
2604 if (!output) {
2605 perror("failed to create output file");
2606 return -1;
2607 }
2608 if (!stat_config.json_output) {
2609 clock_gettime(CLOCK_REALTIME, &tm);
2610 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2611 }
2612 } else if (output_fd > 0) {
2613 mode = append_file ? "a" : "w";
2614 output = fdopen(output_fd, mode);
2615 if (!output) {
2616 perror("Failed opening logfd");
2617 return -errno;
2618 }
2619 }
2620
2621 if (stat_config.interval_clear && !isatty(fileno(output))) {
2622 fprintf(stderr, "--interval-clear does not work with output\n");
2623 parse_options_usage(stat_usage, stat_options, "o", 1);
2624 parse_options_usage(NULL, stat_options, "log-fd", 0);
2625 parse_options_usage(NULL, stat_options, "interval-clear", 0);
2626 return -1;
2627 }
2628
2629 stat_config.output = output;
2630
2631 /*
2632 * let the spreadsheet do the pretty-printing
2633 */
2634 if (stat_config.csv_output) {
2635 /* User explicitly passed -B? */
2636 if (big_num_opt == 1) {
2637 fprintf(stderr, "-B option not supported with -x\n");
2638 parse_options_usage(stat_usage, stat_options, "B", 1);
2639 parse_options_usage(NULL, stat_options, "x", 1);
2640 goto out;
2641 } else /* Nope, so disable big number formatting */
2642 stat_config.big_num = false;
2643 } else if (big_num_opt == 0) /* User passed --no-big-num */
2644 stat_config.big_num = false;
2645
2646 err = target__validate(&target);
2647 if (err) {
2648 target__strerror(&target, err, errbuf, BUFSIZ);
2649 pr_warning("%s\n", errbuf);
2650 }
2651
2652 setup_system_wide(argc);
2653
2654 /*
2655 * Display user/system times only for single
2656 * run and when there's specified tracee.
2657 */
2658 if ((stat_config.run_count == 1) && target__none(&target))
2659 stat_config.ru_display = true;
2660
2661 if (stat_config.run_count < 0) {
2662 pr_err("Run count must be a positive number\n");
2663 parse_options_usage(stat_usage, stat_options, "r", 1);
2664 goto out;
2665 } else if (stat_config.run_count == 0) {
2666 forever = true;
2667 stat_config.run_count = 1;
2668 }
2669
2670 if (stat_config.walltime_run_table) {
2671 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2672 if (!stat_config.walltime_run) {
2673 pr_err("failed to setup -r option");
2674 goto out;
2675 }
2676 }
2677
2678 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2679 !target__has_task(&target)) {
2680 if (!target.system_wide || target.cpu_list) {
2681 fprintf(stderr, "The --per-thread option is only "
2682 "available when monitoring via -p -t -a "
2683 "options or only --per-thread.\n");
2684 parse_options_usage(NULL, stat_options, "p", 1);
2685 parse_options_usage(NULL, stat_options, "t", 1);
2686 goto out;
2687 }
2688 }
2689
2690 /*
2691 * no_aggr, cgroup are for system-wide only
2692 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2693 */
2694 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2695 stat_config.aggr_mode != AGGR_THREAD) ||
2696 (nr_cgroups || stat_config.cgroup_list)) &&
2697 !target__has_cpu(&target)) {
2698 fprintf(stderr, "both cgroup and no-aggregation "
2699 "modes only available in system-wide mode\n");
2700
2701 parse_options_usage(stat_usage, stat_options, "G", 1);
2702 parse_options_usage(NULL, stat_options, "A", 1);
2703 parse_options_usage(NULL, stat_options, "a", 1);
2704 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2705 goto out;
2706 }
2707
2708 if (stat_config.iostat_run) {
2709 status = iostat_prepare(evsel_list, &stat_config);
2710 if (status)
2711 goto out;
2712 if (iostat_mode == IOSTAT_LIST) {
2713 iostat_list(evsel_list, &stat_config);
2714 goto out;
2715 } else if (verbose > 0)
2716 iostat_list(evsel_list, &stat_config);
2717 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2718 target.system_wide = true;
2719 }
2720
2721 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2722 target.per_thread = true;
2723
2724 stat_config.system_wide = target.system_wide;
2725 if (target.cpu_list) {
2726 stat_config.user_requested_cpu_list = strdup(target.cpu_list);
2727 if (!stat_config.user_requested_cpu_list) {
2728 status = -ENOMEM;
2729 goto out;
2730 }
2731 }
2732
2733 /*
2734 * Metric parsing needs to be delayed as metrics may optimize events
2735 * knowing the target is system-wide.
2736 */
2737 if (metrics) {
2738 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
2739 int ret = metricgroup__parse_groups(evsel_list, pmu, metrics,
2740 stat_config.metric_no_group,
2741 stat_config.metric_no_merge,
2742 stat_config.metric_no_threshold,
2743 stat_config.user_requested_cpu_list,
2744 stat_config.system_wide,
2745 stat_config.hardware_aware_grouping,
2746 &stat_config.metric_events);
2747
2748 zfree(&metrics);
2749 if (ret) {
2750 status = ret;
2751 goto out;
2752 }
2753 }
2754
2755 if (add_default_attributes())
2756 goto out;
2757
2758 if (stat_config.cgroup_list) {
2759 if (nr_cgroups > 0) {
2760 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2761 parse_options_usage(stat_usage, stat_options, "G", 1);
2762 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2763 goto out;
2764 }
2765
2766 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2767 &stat_config.metric_events, true) < 0) {
2768 parse_options_usage(stat_usage, stat_options,
2769 "for-each-cgroup", 0);
2770 goto out;
2771 }
2772 }
2773
2774 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list);
2775
2776 if (evlist__create_maps(evsel_list, &target) < 0) {
2777 if (target__has_task(&target)) {
2778 pr_err("Problems finding threads of monitor\n");
2779 parse_options_usage(stat_usage, stat_options, "p", 1);
2780 parse_options_usage(NULL, stat_options, "t", 1);
2781 } else if (target__has_cpu(&target)) {
2782 perror("failed to parse CPUs map");
2783 parse_options_usage(stat_usage, stat_options, "C", 1);
2784 parse_options_usage(NULL, stat_options, "a", 1);
2785 }
2786 goto out;
2787 }
2788
2789 evlist__check_cpu_maps(evsel_list);
2790
2791 /*
2792 * Initialize thread_map with comm names,
2793 * so we could print it out on output.
2794 */
2795 if (stat_config.aggr_mode == AGGR_THREAD) {
2796 thread_map__read_comms(evsel_list->core.threads);
2797 }
2798
2799 if (stat_config.aggr_mode == AGGR_NODE)
2800 cpu__setup_cpunode_map();
2801
2802 if (stat_config.times && interval)
2803 interval_count = true;
2804 else if (stat_config.times && !interval) {
2805 pr_err("interval-count option should be used together with "
2806 "interval-print.\n");
2807 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2808 parse_options_usage(stat_usage, stat_options, "I", 1);
2809 goto out;
2810 }
2811
2812 if (timeout && timeout < 100) {
2813 if (timeout < 10) {
2814 pr_err("timeout must be >= 10ms.\n");
2815 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2816 goto out;
2817 } else
2818 pr_warning("timeout < 100ms. "
2819 "The overhead percentage could be high in some cases. "
2820 "Please proceed with caution.\n");
2821 }
2822 if (timeout && interval) {
2823 pr_err("timeout option is not supported with interval-print.\n");
2824 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2825 parse_options_usage(stat_usage, stat_options, "I", 1);
2826 goto out;
2827 }
2828
2829 if (perf_stat_init_aggr_mode())
2830 goto out;
2831
2832 if (evlist__alloc_stats(&stat_config, evsel_list, interval))
2833 goto out;
2834
2835 /*
2836 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2837 * while avoiding that older tools show confusing messages.
2838 *
2839 * However for pipe sessions we need to keep it zero,
2840 * because script's perf_evsel__check_attr is triggered
2841 * by attr->sample_type != 0, and we can't run it on
2842 * stat sessions.
2843 */
2844 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2845
2846 /*
2847 * We dont want to block the signals - that would cause
2848 * child tasks to inherit that and Ctrl-C would not work.
2849 * What we want is for Ctrl-C to work in the exec()-ed
2850 * task, but being ignored by perf stat itself:
2851 */
2852 atexit(sig_atexit);
2853 if (!forever)
2854 signal(SIGINT, skip_signal);
2855 signal(SIGCHLD, skip_signal);
2856 signal(SIGALRM, skip_signal);
2857 signal(SIGABRT, skip_signal);
2858
2859 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2860 goto out;
2861
2862 /* Enable ignoring missing threads when -p option is defined. */
2863 evlist__first(evsel_list)->ignore_missing_thread = target.pid;
2864 status = 0;
2865 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2866 if (stat_config.run_count != 1 && verbose > 0)
2867 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2868 run_idx + 1);
2869
2870 if (run_idx != 0)
2871 evlist__reset_prev_raw_counts(evsel_list);
2872
2873 status = run_perf_stat(argc, argv, run_idx);
2874 if (forever && status != -1 && !interval) {
2875 print_counters(NULL, argc, argv);
2876 perf_stat__reset_stats();
2877 }
2878 }
2879
2880 if (!forever && status != -1 && (!interval || stat_config.summary)) {
2881 if (stat_config.run_count > 1)
2882 evlist__copy_res_stats(&stat_config, evsel_list);
2883 print_counters(NULL, argc, argv);
2884 }
2885
2886 evlist__finalize_ctlfd(evsel_list);
2887
2888 if (STAT_RECORD) {
2889 /*
2890 * We synthesize the kernel mmap record just so that older tools
2891 * don't emit warnings about not being able to resolve symbols
2892 * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2893 * a saner message about no samples being in the perf.data file.
2894 *
2895 * This also serves to suppress a warning about f_header.data.size == 0
2896 * in header.c at the moment 'perf stat record' gets introduced, which
2897 * is not really needed once we start adding the stat specific PERF_RECORD_
2898 * records, but the need to suppress the kptr_restrict messages in older
2899 * tools remain -acme
2900 */
2901 int fd = perf_data__fd(&perf_stat.data);
2902
2903 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2904 process_synthesized_event,
2905 &perf_stat.session->machines.host);
2906 if (err) {
2907 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2908 "older tools may produce warnings about this file\n.");
2909 }
2910
2911 if (!interval) {
2912 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2913 pr_err("failed to write stat round event\n");
2914 }
2915
2916 if (!perf_stat.data.is_pipe) {
2917 perf_stat.session->header.data_size += perf_stat.bytes_written;
2918 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2919 }
2920
2921 evlist__close(evsel_list);
2922 perf_session__delete(perf_stat.session);
2923 }
2924
2925 perf_stat__exit_aggr_mode();
2926 evlist__free_stats(evsel_list);
2927 out:
2928 if (stat_config.iostat_run)
2929 iostat_release(evsel_list);
2930
2931 zfree(&stat_config.walltime_run);
2932 zfree(&stat_config.user_requested_cpu_list);
2933
2934 if (smi_cost && smi_reset)
2935 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2936
2937 evlist__delete(evsel_list);
2938
2939 metricgroup__rblist_exit(&stat_config.metric_events);
2940 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2941
2942 return status;
2943 }
2944
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