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