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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/util.h"
47#include "util/parse-options.h"
48#include "util/parse-events.h"
49#include "util/pmu.h"
50#include "util/event.h"
51#include "util/evlist.h"
52#include "util/evsel.h"
53#include "util/debug.h"
54#include "util/color.h"
55#include "util/stat.h"
56#include "util/header.h"
57#include "util/cpumap.h"
58#include "util/thread.h"
59#include "util/thread_map.h"
60
61#include <stdlib.h>
62#include <sys/prctl.h>
63#include <locale.h>
64
65#define DEFAULT_SEPARATOR " "
66#define CNTR_NOT_SUPPORTED "<not supported>"
67#define CNTR_NOT_COUNTED "<not counted>"
68
69static void print_stat(int argc, const char **argv);
70static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
71static void print_counter(struct perf_evsel *counter, char *prefix);
72static void print_aggr(char *prefix);
73
74/* Default events used for perf stat -T */
75static const char * const transaction_attrs[] = {
76 "task-clock",
77 "{"
78 "instructions,"
79 "cycles,"
80 "cpu/cycles-t/,"
81 "cpu/tx-start/,"
82 "cpu/el-start/,"
83 "cpu/cycles-ct/"
84 "}"
85};
86
87/* More limited version when the CPU does not have all events. */
88static const char * const transaction_limited_attrs[] = {
89 "task-clock",
90 "{"
91 "instructions,"
92 "cycles,"
93 "cpu/cycles-t/,"
94 "cpu/tx-start/"
95 "}"
96};
97
98/* must match transaction_attrs and the beginning limited_attrs */
99enum {
100 T_TASK_CLOCK,
101 T_INSTRUCTIONS,
102 T_CYCLES,
103 T_CYCLES_IN_TX,
104 T_TRANSACTION_START,
105 T_ELISION_START,
106 T_CYCLES_IN_TX_CP,
107};
108
109static struct perf_evlist *evsel_list;
110
111static struct target target = {
112 .uid = UINT_MAX,
113};
114
115enum aggr_mode {
116 AGGR_NONE,
117 AGGR_GLOBAL,
118 AGGR_SOCKET,
119 AGGR_CORE,
120};
121
122static int run_count = 1;
123static bool no_inherit = false;
124static bool scale = true;
125static enum aggr_mode aggr_mode = AGGR_GLOBAL;
126static volatile pid_t child_pid = -1;
127static bool null_run = false;
128static int detailed_run = 0;
129static bool transaction_run;
130static bool big_num = true;
131static int big_num_opt = -1;
132static const char *csv_sep = NULL;
133static bool csv_output = false;
134static bool group = false;
135static FILE *output = NULL;
136static const char *pre_cmd = NULL;
137static const char *post_cmd = NULL;
138static bool sync_run = false;
139static unsigned int interval = 0;
140static unsigned int initial_delay = 0;
141static unsigned int unit_width = 4; /* strlen("unit") */
142static bool forever = false;
143static struct timespec ref_time;
144static struct cpu_map *aggr_map;
145static int (*aggr_get_id)(struct cpu_map *m, int cpu);
146
147static volatile int done = 0;
148
149struct perf_stat {
150 struct stats res_stats[3];
151};
152
153static inline void diff_timespec(struct timespec *r, struct timespec *a,
154 struct timespec *b)
155{
156 r->tv_sec = a->tv_sec - b->tv_sec;
157 if (a->tv_nsec < b->tv_nsec) {
158 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
159 r->tv_sec--;
160 } else {
161 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
162 }
163}
164
165static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
166{
167 return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
168}
169
170static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
171{
172 return perf_evsel__cpus(evsel)->nr;
173}
174
175static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
176{
177 int i;
178 struct perf_stat *ps = evsel->priv;
179
180 for (i = 0; i < 3; i++)
181 init_stats(&ps->res_stats[i]);
182}
183
184static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
185{
186 evsel->priv = zalloc(sizeof(struct perf_stat));
187 if (evsel == NULL)
188 return -ENOMEM;
189 perf_evsel__reset_stat_priv(evsel);
190 return 0;
191}
192
193static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
194{
195 zfree(&evsel->priv);
196}
197
198static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
199{
200 void *addr;
201 size_t sz;
202
203 sz = sizeof(*evsel->counts) +
204 (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
205
206 addr = zalloc(sz);
207 if (!addr)
208 return -ENOMEM;
209
210 evsel->prev_raw_counts = addr;
211
212 return 0;
213}
214
215static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
216{
217 zfree(&evsel->prev_raw_counts);
218}
219
220static void perf_evlist__free_stats(struct perf_evlist *evlist)
221{
222 struct perf_evsel *evsel;
223
224 evlist__for_each(evlist, evsel) {
225 perf_evsel__free_stat_priv(evsel);
226 perf_evsel__free_counts(evsel);
227 perf_evsel__free_prev_raw_counts(evsel);
228 }
229}
230
231static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
232{
233 struct perf_evsel *evsel;
234
235 evlist__for_each(evlist, evsel) {
236 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
237 perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
238 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
239 goto out_free;
240 }
241
242 return 0;
243
244out_free:
245 perf_evlist__free_stats(evlist);
246 return -1;
247}
248
249static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
250static struct stats runtime_cycles_stats[MAX_NR_CPUS];
251static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
252static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
253static struct stats runtime_branches_stats[MAX_NR_CPUS];
254static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
255static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
256static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
257static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
258static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
259static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
260static struct stats runtime_cycles_in_tx_stats[MAX_NR_CPUS];
261static struct stats walltime_nsecs_stats;
262static struct stats runtime_transaction_stats[MAX_NR_CPUS];
263static struct stats runtime_elision_stats[MAX_NR_CPUS];
264
265static void perf_stat__reset_stats(struct perf_evlist *evlist)
266{
267 struct perf_evsel *evsel;
268
269 evlist__for_each(evlist, evsel) {
270 perf_evsel__reset_stat_priv(evsel);
271 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
272 }
273
274 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
275 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
276 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
277 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
278 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
279 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
280 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
281 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
282 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
283 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
284 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
285 memset(runtime_cycles_in_tx_stats, 0,
286 sizeof(runtime_cycles_in_tx_stats));
287 memset(runtime_transaction_stats, 0,
288 sizeof(runtime_transaction_stats));
289 memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
290 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
291}
292
293static int create_perf_stat_counter(struct perf_evsel *evsel)
294{
295 struct perf_event_attr *attr = &evsel->attr;
296
297 if (scale)
298 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
299 PERF_FORMAT_TOTAL_TIME_RUNNING;
300
301 attr->inherit = !no_inherit;
302
303 if (target__has_cpu(&target))
304 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
305
306 if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) {
307 attr->disabled = 1;
308 if (!initial_delay)
309 attr->enable_on_exec = 1;
310 }
311
312 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
313}
314
315/*
316 * Does the counter have nsecs as a unit?
317 */
318static inline int nsec_counter(struct perf_evsel *evsel)
319{
320 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
321 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
322 return 1;
323
324 return 0;
325}
326
327static struct perf_evsel *nth_evsel(int n)
328{
329 static struct perf_evsel **array;
330 static int array_len;
331 struct perf_evsel *ev;
332 int j;
333
334 /* Assumes this only called when evsel_list does not change anymore. */
335 if (!array) {
336 evlist__for_each(evsel_list, ev)
337 array_len++;
338 array = malloc(array_len * sizeof(void *));
339 if (!array)
340 exit(ENOMEM);
341 j = 0;
342 evlist__for_each(evsel_list, ev)
343 array[j++] = ev;
344 }
345 if (n < array_len)
346 return array[n];
347 return NULL;
348}
349
350/*
351 * Update various tracking values we maintain to print
352 * more semantic information such as miss/hit ratios,
353 * instruction rates, etc:
354 */
355static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
356{
357 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
358 update_stats(&runtime_nsecs_stats[0], count[0]);
359 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
360 update_stats(&runtime_cycles_stats[0], count[0]);
361 else if (transaction_run &&
362 perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
363 update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
364 else if (transaction_run &&
365 perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
366 update_stats(&runtime_transaction_stats[0], count[0]);
367 else if (transaction_run &&
368 perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
369 update_stats(&runtime_elision_stats[0], count[0]);
370 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
371 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
372 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
373 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
374 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
375 update_stats(&runtime_branches_stats[0], count[0]);
376 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
377 update_stats(&runtime_cacherefs_stats[0], count[0]);
378 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
379 update_stats(&runtime_l1_dcache_stats[0], count[0]);
380 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
381 update_stats(&runtime_l1_icache_stats[0], count[0]);
382 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
383 update_stats(&runtime_ll_cache_stats[0], count[0]);
384 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
385 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
386 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
387 update_stats(&runtime_itlb_cache_stats[0], count[0]);
388}
389
390/*
391 * Read out the results of a single counter:
392 * aggregate counts across CPUs in system-wide mode
393 */
394static int read_counter_aggr(struct perf_evsel *counter)
395{
396 struct perf_stat *ps = counter->priv;
397 u64 *count = counter->counts->aggr.values;
398 int i;
399
400 if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
401 thread_map__nr(evsel_list->threads), scale) < 0)
402 return -1;
403
404 for (i = 0; i < 3; i++)
405 update_stats(&ps->res_stats[i], count[i]);
406
407 if (verbose) {
408 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
409 perf_evsel__name(counter), count[0], count[1], count[2]);
410 }
411
412 /*
413 * Save the full runtime - to allow normalization during printout:
414 */
415 update_shadow_stats(counter, count);
416
417 return 0;
418}
419
420/*
421 * Read out the results of a single counter:
422 * do not aggregate counts across CPUs in system-wide mode
423 */
424static int read_counter(struct perf_evsel *counter)
425{
426 u64 *count;
427 int cpu;
428
429 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
430 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
431 return -1;
432
433 count = counter->counts->cpu[cpu].values;
434
435 update_shadow_stats(counter, count);
436 }
437
438 return 0;
439}
440
441static void print_interval(void)
442{
443 static int num_print_interval;
444 struct perf_evsel *counter;
445 struct perf_stat *ps;
446 struct timespec ts, rs;
447 char prefix[64];
448
449 if (aggr_mode == AGGR_GLOBAL) {
450 evlist__for_each(evsel_list, counter) {
451 ps = counter->priv;
452 memset(ps->res_stats, 0, sizeof(ps->res_stats));
453 read_counter_aggr(counter);
454 }
455 } else {
456 evlist__for_each(evsel_list, counter) {
457 ps = counter->priv;
458 memset(ps->res_stats, 0, sizeof(ps->res_stats));
459 read_counter(counter);
460 }
461 }
462
463 clock_gettime(CLOCK_MONOTONIC, &ts);
464 diff_timespec(&rs, &ts, &ref_time);
465 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
466
467 if (num_print_interval == 0 && !csv_output) {
468 switch (aggr_mode) {
469 case AGGR_SOCKET:
470 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
471 break;
472 case AGGR_CORE:
473 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
474 break;
475 case AGGR_NONE:
476 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
477 break;
478 case AGGR_GLOBAL:
479 default:
480 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
481 }
482 }
483
484 if (++num_print_interval == 25)
485 num_print_interval = 0;
486
487 switch (aggr_mode) {
488 case AGGR_CORE:
489 case AGGR_SOCKET:
490 print_aggr(prefix);
491 break;
492 case AGGR_NONE:
493 evlist__for_each(evsel_list, counter)
494 print_counter(counter, prefix);
495 break;
496 case AGGR_GLOBAL:
497 default:
498 evlist__for_each(evsel_list, counter)
499 print_counter_aggr(counter, prefix);
500 }
501
502 fflush(output);
503}
504
505static void handle_initial_delay(void)
506{
507 struct perf_evsel *counter;
508
509 if (initial_delay) {
510 const int ncpus = cpu_map__nr(evsel_list->cpus),
511 nthreads = thread_map__nr(evsel_list->threads);
512
513 usleep(initial_delay * 1000);
514 evlist__for_each(evsel_list, counter)
515 perf_evsel__enable(counter, ncpus, nthreads);
516 }
517}
518
519static volatile int workload_exec_errno;
520
521/*
522 * perf_evlist__prepare_workload will send a SIGUSR1
523 * if the fork fails, since we asked by setting its
524 * want_signal to true.
525 */
526static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
527 void *ucontext __maybe_unused)
528{
529 workload_exec_errno = info->si_value.sival_int;
530}
531
532static int __run_perf_stat(int argc, const char **argv)
533{
534 char msg[512];
535 unsigned long long t0, t1;
536 struct perf_evsel *counter;
537 struct timespec ts;
538 size_t l;
539 int status = 0;
540 const bool forks = (argc > 0);
541
542 if (interval) {
543 ts.tv_sec = interval / 1000;
544 ts.tv_nsec = (interval % 1000) * 1000000;
545 } else {
546 ts.tv_sec = 1;
547 ts.tv_nsec = 0;
548 }
549
550 if (forks) {
551 if (perf_evlist__prepare_workload(evsel_list, &target, argv, false,
552 workload_exec_failed_signal) < 0) {
553 perror("failed to prepare workload");
554 return -1;
555 }
556 child_pid = evsel_list->workload.pid;
557 }
558
559 if (group)
560 perf_evlist__set_leader(evsel_list);
561
562 evlist__for_each(evsel_list, counter) {
563 if (create_perf_stat_counter(counter) < 0) {
564 /*
565 * PPC returns ENXIO for HW counters until 2.6.37
566 * (behavior changed with commit b0a873e).
567 */
568 if (errno == EINVAL || errno == ENOSYS ||
569 errno == ENOENT || errno == EOPNOTSUPP ||
570 errno == ENXIO) {
571 if (verbose)
572 ui__warning("%s event is not supported by the kernel.\n",
573 perf_evsel__name(counter));
574 counter->supported = false;
575 continue;
576 }
577
578 perf_evsel__open_strerror(counter, &target,
579 errno, msg, sizeof(msg));
580 ui__error("%s\n", msg);
581
582 if (child_pid != -1)
583 kill(child_pid, SIGTERM);
584
585 return -1;
586 }
587 counter->supported = true;
588
589 l = strlen(counter->unit);
590 if (l > unit_width)
591 unit_width = l;
592 }
593
594 if (perf_evlist__apply_filters(evsel_list)) {
595 error("failed to set filter with %d (%s)\n", errno,
596 strerror(errno));
597 return -1;
598 }
599
600 /*
601 * Enable counters and exec the command:
602 */
603 t0 = rdclock();
604 clock_gettime(CLOCK_MONOTONIC, &ref_time);
605
606 if (forks) {
607 perf_evlist__start_workload(evsel_list);
608 handle_initial_delay();
609
610 if (interval) {
611 while (!waitpid(child_pid, &status, WNOHANG)) {
612 nanosleep(&ts, NULL);
613 print_interval();
614 }
615 }
616 wait(&status);
617
618 if (workload_exec_errno) {
619 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
620 pr_err("Workload failed: %s\n", emsg);
621 return -1;
622 }
623
624 if (WIFSIGNALED(status))
625 psignal(WTERMSIG(status), argv[0]);
626 } else {
627 handle_initial_delay();
628 while (!done) {
629 nanosleep(&ts, NULL);
630 if (interval)
631 print_interval();
632 }
633 }
634
635 t1 = rdclock();
636
637 update_stats(&walltime_nsecs_stats, t1 - t0);
638
639 if (aggr_mode == AGGR_GLOBAL) {
640 evlist__for_each(evsel_list, counter) {
641 read_counter_aggr(counter);
642 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
643 thread_map__nr(evsel_list->threads));
644 }
645 } else {
646 evlist__for_each(evsel_list, counter) {
647 read_counter(counter);
648 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
649 }
650 }
651
652 return WEXITSTATUS(status);
653}
654
655static int run_perf_stat(int argc, const char **argv)
656{
657 int ret;
658
659 if (pre_cmd) {
660 ret = system(pre_cmd);
661 if (ret)
662 return ret;
663 }
664
665 if (sync_run)
666 sync();
667
668 ret = __run_perf_stat(argc, argv);
669 if (ret)
670 return ret;
671
672 if (post_cmd) {
673 ret = system(post_cmd);
674 if (ret)
675 return ret;
676 }
677
678 return ret;
679}
680
681static void print_noise_pct(double total, double avg)
682{
683 double pct = rel_stddev_stats(total, avg);
684
685 if (csv_output)
686 fprintf(output, "%s%.2f%%", csv_sep, pct);
687 else if (pct)
688 fprintf(output, " ( +-%6.2f%% )", pct);
689}
690
691static void print_noise(struct perf_evsel *evsel, double avg)
692{
693 struct perf_stat *ps;
694
695 if (run_count == 1)
696 return;
697
698 ps = evsel->priv;
699 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
700}
701
702static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
703{
704 switch (aggr_mode) {
705 case AGGR_CORE:
706 fprintf(output, "S%d-C%*d%s%*d%s",
707 cpu_map__id_to_socket(id),
708 csv_output ? 0 : -8,
709 cpu_map__id_to_cpu(id),
710 csv_sep,
711 csv_output ? 0 : 4,
712 nr,
713 csv_sep);
714 break;
715 case AGGR_SOCKET:
716 fprintf(output, "S%*d%s%*d%s",
717 csv_output ? 0 : -5,
718 id,
719 csv_sep,
720 csv_output ? 0 : 4,
721 nr,
722 csv_sep);
723 break;
724 case AGGR_NONE:
725 fprintf(output, "CPU%*d%s",
726 csv_output ? 0 : -4,
727 perf_evsel__cpus(evsel)->map[id], csv_sep);
728 break;
729 case AGGR_GLOBAL:
730 default:
731 break;
732 }
733}
734
735static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
736{
737 double msecs = avg / 1e6;
738 const char *fmt_v, *fmt_n;
739 char name[25];
740
741 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
742 fmt_n = csv_output ? "%s" : "%-25s";
743
744 aggr_printout(evsel, cpu, nr);
745
746 scnprintf(name, sizeof(name), "%s%s",
747 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
748
749 fprintf(output, fmt_v, msecs, csv_sep);
750
751 if (csv_output)
752 fprintf(output, "%s%s", evsel->unit, csv_sep);
753 else
754 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
755
756 fprintf(output, fmt_n, name);
757
758 if (evsel->cgrp)
759 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
760
761 if (csv_output || interval)
762 return;
763
764 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
765 fprintf(output, " # %8.3f CPUs utilized ",
766 avg / avg_stats(&walltime_nsecs_stats));
767 else
768 fprintf(output, " ");
769}
770
771/* used for get_ratio_color() */
772enum grc_type {
773 GRC_STALLED_CYCLES_FE,
774 GRC_STALLED_CYCLES_BE,
775 GRC_CACHE_MISSES,
776 GRC_MAX_NR
777};
778
779static const char *get_ratio_color(enum grc_type type, double ratio)
780{
781 static const double grc_table[GRC_MAX_NR][3] = {
782 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
783 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
784 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
785 };
786 const char *color = PERF_COLOR_NORMAL;
787
788 if (ratio > grc_table[type][0])
789 color = PERF_COLOR_RED;
790 else if (ratio > grc_table[type][1])
791 color = PERF_COLOR_MAGENTA;
792 else if (ratio > grc_table[type][2])
793 color = PERF_COLOR_YELLOW;
794
795 return color;
796}
797
798static void print_stalled_cycles_frontend(int cpu,
799 struct perf_evsel *evsel
800 __maybe_unused, double avg)
801{
802 double total, ratio = 0.0;
803 const char *color;
804
805 total = avg_stats(&runtime_cycles_stats[cpu]);
806
807 if (total)
808 ratio = avg / total * 100.0;
809
810 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
811
812 fprintf(output, " # ");
813 color_fprintf(output, color, "%6.2f%%", ratio);
814 fprintf(output, " frontend cycles idle ");
815}
816
817static void print_stalled_cycles_backend(int cpu,
818 struct perf_evsel *evsel
819 __maybe_unused, double avg)
820{
821 double total, ratio = 0.0;
822 const char *color;
823
824 total = avg_stats(&runtime_cycles_stats[cpu]);
825
826 if (total)
827 ratio = avg / total * 100.0;
828
829 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
830
831 fprintf(output, " # ");
832 color_fprintf(output, color, "%6.2f%%", ratio);
833 fprintf(output, " backend cycles idle ");
834}
835
836static void print_branch_misses(int cpu,
837 struct perf_evsel *evsel __maybe_unused,
838 double avg)
839{
840 double total, ratio = 0.0;
841 const char *color;
842
843 total = avg_stats(&runtime_branches_stats[cpu]);
844
845 if (total)
846 ratio = avg / total * 100.0;
847
848 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
849
850 fprintf(output, " # ");
851 color_fprintf(output, color, "%6.2f%%", ratio);
852 fprintf(output, " of all branches ");
853}
854
855static void print_l1_dcache_misses(int cpu,
856 struct perf_evsel *evsel __maybe_unused,
857 double avg)
858{
859 double total, ratio = 0.0;
860 const char *color;
861
862 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
863
864 if (total)
865 ratio = avg / total * 100.0;
866
867 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
868
869 fprintf(output, " # ");
870 color_fprintf(output, color, "%6.2f%%", ratio);
871 fprintf(output, " of all L1-dcache hits ");
872}
873
874static void print_l1_icache_misses(int cpu,
875 struct perf_evsel *evsel __maybe_unused,
876 double avg)
877{
878 double total, ratio = 0.0;
879 const char *color;
880
881 total = avg_stats(&runtime_l1_icache_stats[cpu]);
882
883 if (total)
884 ratio = avg / total * 100.0;
885
886 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
887
888 fprintf(output, " # ");
889 color_fprintf(output, color, "%6.2f%%", ratio);
890 fprintf(output, " of all L1-icache hits ");
891}
892
893static void print_dtlb_cache_misses(int cpu,
894 struct perf_evsel *evsel __maybe_unused,
895 double avg)
896{
897 double total, ratio = 0.0;
898 const char *color;
899
900 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
901
902 if (total)
903 ratio = avg / total * 100.0;
904
905 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
906
907 fprintf(output, " # ");
908 color_fprintf(output, color, "%6.2f%%", ratio);
909 fprintf(output, " of all dTLB cache hits ");
910}
911
912static void print_itlb_cache_misses(int cpu,
913 struct perf_evsel *evsel __maybe_unused,
914 double avg)
915{
916 double total, ratio = 0.0;
917 const char *color;
918
919 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
920
921 if (total)
922 ratio = avg / total * 100.0;
923
924 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
925
926 fprintf(output, " # ");
927 color_fprintf(output, color, "%6.2f%%", ratio);
928 fprintf(output, " of all iTLB cache hits ");
929}
930
931static void print_ll_cache_misses(int cpu,
932 struct perf_evsel *evsel __maybe_unused,
933 double avg)
934{
935 double total, ratio = 0.0;
936 const char *color;
937
938 total = avg_stats(&runtime_ll_cache_stats[cpu]);
939
940 if (total)
941 ratio = avg / total * 100.0;
942
943 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
944
945 fprintf(output, " # ");
946 color_fprintf(output, color, "%6.2f%%", ratio);
947 fprintf(output, " of all LL-cache hits ");
948}
949
950static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
951{
952 double total, ratio = 0.0, total2;
953 double sc = evsel->scale;
954 const char *fmt;
955
956 if (csv_output) {
957 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
958 } else {
959 if (big_num)
960 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
961 else
962 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
963 }
964
965 aggr_printout(evsel, cpu, nr);
966
967 if (aggr_mode == AGGR_GLOBAL)
968 cpu = 0;
969
970 fprintf(output, fmt, avg, csv_sep);
971
972 if (evsel->unit)
973 fprintf(output, "%-*s%s",
974 csv_output ? 0 : unit_width,
975 evsel->unit, csv_sep);
976
977 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
978
979 if (evsel->cgrp)
980 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
981
982 if (csv_output || interval)
983 return;
984
985 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
986 total = avg_stats(&runtime_cycles_stats[cpu]);
987 if (total) {
988 ratio = avg / total;
989 fprintf(output, " # %5.2f insns per cycle ", ratio);
990 }
991 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
992 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
993
994 if (total && avg) {
995 ratio = total / avg;
996 fprintf(output, "\n");
997 if (aggr_mode == AGGR_NONE)
998 fprintf(output, " ");
999 fprintf(output, " # %5.2f stalled cycles per insn", ratio);
1000 }
1001
1002 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
1003 runtime_branches_stats[cpu].n != 0) {
1004 print_branch_misses(cpu, evsel, avg);
1005 } else if (
1006 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1007 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
1008 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1009 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1010 runtime_l1_dcache_stats[cpu].n != 0) {
1011 print_l1_dcache_misses(cpu, evsel, avg);
1012 } else if (
1013 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1014 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
1015 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1016 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1017 runtime_l1_icache_stats[cpu].n != 0) {
1018 print_l1_icache_misses(cpu, evsel, avg);
1019 } else if (
1020 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1021 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
1022 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1023 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1024 runtime_dtlb_cache_stats[cpu].n != 0) {
1025 print_dtlb_cache_misses(cpu, evsel, avg);
1026 } else if (
1027 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1028 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
1029 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1030 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1031 runtime_itlb_cache_stats[cpu].n != 0) {
1032 print_itlb_cache_misses(cpu, evsel, avg);
1033 } else if (
1034 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1035 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
1036 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1037 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1038 runtime_ll_cache_stats[cpu].n != 0) {
1039 print_ll_cache_misses(cpu, evsel, avg);
1040 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
1041 runtime_cacherefs_stats[cpu].n != 0) {
1042 total = avg_stats(&runtime_cacherefs_stats[cpu]);
1043
1044 if (total)
1045 ratio = avg * 100 / total;
1046
1047 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
1048
1049 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
1050 print_stalled_cycles_frontend(cpu, evsel, avg);
1051 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
1052 print_stalled_cycles_backend(cpu, evsel, avg);
1053 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
1054 total = avg_stats(&runtime_nsecs_stats[cpu]);
1055
1056 if (total) {
1057 ratio = avg / total;
1058 fprintf(output, " # %8.3f GHz ", ratio);
1059 }
1060 } else if (transaction_run &&
1061 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1062 total = avg_stats(&runtime_cycles_stats[cpu]);
1063 if (total)
1064 fprintf(output,
1065 " # %5.2f%% transactional cycles ",
1066 100.0 * (avg / total));
1067 } else if (transaction_run &&
1068 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1069 total = avg_stats(&runtime_cycles_stats[cpu]);
1070 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1071 if (total2 < avg)
1072 total2 = avg;
1073 if (total)
1074 fprintf(output,
1075 " # %5.2f%% aborted cycles ",
1076 100.0 * ((total2-avg) / total));
1077 } else if (transaction_run &&
1078 perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1079 avg > 0 &&
1080 runtime_cycles_in_tx_stats[cpu].n != 0) {
1081 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1082
1083 if (total)
1084 ratio = total / avg;
1085
1086 fprintf(output, " # %8.0f cycles / transaction ", ratio);
1087 } else if (transaction_run &&
1088 perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1089 avg > 0 &&
1090 runtime_cycles_in_tx_stats[cpu].n != 0) {
1091 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1092
1093 if (total)
1094 ratio = total / avg;
1095
1096 fprintf(output, " # %8.0f cycles / elision ", ratio);
1097 } else if (runtime_nsecs_stats[cpu].n != 0) {
1098 char unit = 'M';
1099
1100 total = avg_stats(&runtime_nsecs_stats[cpu]);
1101
1102 if (total)
1103 ratio = 1000.0 * avg / total;
1104 if (ratio < 0.001) {
1105 ratio *= 1000;
1106 unit = 'K';
1107 }
1108
1109 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
1110 } else {
1111 fprintf(output, " ");
1112 }
1113}
1114
1115static void print_aggr(char *prefix)
1116{
1117 struct perf_evsel *counter;
1118 int cpu, cpu2, s, s2, id, nr;
1119 double uval;
1120 u64 ena, run, val;
1121
1122 if (!(aggr_map || aggr_get_id))
1123 return;
1124
1125 for (s = 0; s < aggr_map->nr; s++) {
1126 id = aggr_map->map[s];
1127 evlist__for_each(evsel_list, counter) {
1128 val = ena = run = 0;
1129 nr = 0;
1130 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1131 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1132 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1133 if (s2 != id)
1134 continue;
1135 val += counter->counts->cpu[cpu].val;
1136 ena += counter->counts->cpu[cpu].ena;
1137 run += counter->counts->cpu[cpu].run;
1138 nr++;
1139 }
1140 if (prefix)
1141 fprintf(output, "%s", prefix);
1142
1143 if (run == 0 || ena == 0) {
1144 aggr_printout(counter, id, nr);
1145
1146 fprintf(output, "%*s%s",
1147 csv_output ? 0 : 18,
1148 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1149 csv_sep);
1150
1151 fprintf(output, "%-*s%s",
1152 csv_output ? 0 : unit_width,
1153 counter->unit, csv_sep);
1154
1155 fprintf(output, "%*s",
1156 csv_output ? 0 : -25,
1157 perf_evsel__name(counter));
1158
1159 if (counter->cgrp)
1160 fprintf(output, "%s%s",
1161 csv_sep, counter->cgrp->name);
1162
1163 fputc('\n', output);
1164 continue;
1165 }
1166 uval = val * counter->scale;
1167
1168 if (nsec_counter(counter))
1169 nsec_printout(id, nr, counter, uval);
1170 else
1171 abs_printout(id, nr, counter, uval);
1172
1173 if (!csv_output) {
1174 print_noise(counter, 1.0);
1175
1176 if (run != ena)
1177 fprintf(output, " (%.2f%%)",
1178 100.0 * run / ena);
1179 }
1180 fputc('\n', output);
1181 }
1182 }
1183}
1184
1185/*
1186 * Print out the results of a single counter:
1187 * aggregated counts in system-wide mode
1188 */
1189static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1190{
1191 struct perf_stat *ps = counter->priv;
1192 double avg = avg_stats(&ps->res_stats[0]);
1193 int scaled = counter->counts->scaled;
1194 double uval;
1195
1196 if (prefix)
1197 fprintf(output, "%s", prefix);
1198
1199 if (scaled == -1) {
1200 fprintf(output, "%*s%s",
1201 csv_output ? 0 : 18,
1202 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1203 csv_sep);
1204 fprintf(output, "%-*s%s",
1205 csv_output ? 0 : unit_width,
1206 counter->unit, csv_sep);
1207 fprintf(output, "%*s",
1208 csv_output ? 0 : -25,
1209 perf_evsel__name(counter));
1210
1211 if (counter->cgrp)
1212 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1213
1214 fputc('\n', output);
1215 return;
1216 }
1217
1218 uval = avg * counter->scale;
1219
1220 if (nsec_counter(counter))
1221 nsec_printout(-1, 0, counter, uval);
1222 else
1223 abs_printout(-1, 0, counter, uval);
1224
1225 print_noise(counter, avg);
1226
1227 if (csv_output) {
1228 fputc('\n', output);
1229 return;
1230 }
1231
1232 if (scaled) {
1233 double avg_enabled, avg_running;
1234
1235 avg_enabled = avg_stats(&ps->res_stats[1]);
1236 avg_running = avg_stats(&ps->res_stats[2]);
1237
1238 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1239 }
1240 fprintf(output, "\n");
1241}
1242
1243/*
1244 * Print out the results of a single counter:
1245 * does not use aggregated count in system-wide
1246 */
1247static void print_counter(struct perf_evsel *counter, char *prefix)
1248{
1249 u64 ena, run, val;
1250 double uval;
1251 int cpu;
1252
1253 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1254 val = counter->counts->cpu[cpu].val;
1255 ena = counter->counts->cpu[cpu].ena;
1256 run = counter->counts->cpu[cpu].run;
1257
1258 if (prefix)
1259 fprintf(output, "%s", prefix);
1260
1261 if (run == 0 || ena == 0) {
1262 fprintf(output, "CPU%*d%s%*s%s",
1263 csv_output ? 0 : -4,
1264 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1265 csv_output ? 0 : 18,
1266 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1267 csv_sep);
1268
1269 fprintf(output, "%-*s%s",
1270 csv_output ? 0 : unit_width,
1271 counter->unit, csv_sep);
1272
1273 fprintf(output, "%*s",
1274 csv_output ? 0 : -25,
1275 perf_evsel__name(counter));
1276
1277 if (counter->cgrp)
1278 fprintf(output, "%s%s",
1279 csv_sep, counter->cgrp->name);
1280
1281 fputc('\n', output);
1282 continue;
1283 }
1284
1285 uval = val * counter->scale;
1286
1287 if (nsec_counter(counter))
1288 nsec_printout(cpu, 0, counter, uval);
1289 else
1290 abs_printout(cpu, 0, counter, uval);
1291
1292 if (!csv_output) {
1293 print_noise(counter, 1.0);
1294
1295 if (run != ena)
1296 fprintf(output, " (%.2f%%)",
1297 100.0 * run / ena);
1298 }
1299 fputc('\n', output);
1300 }
1301}
1302
1303static void print_stat(int argc, const char **argv)
1304{
1305 struct perf_evsel *counter;
1306 int i;
1307
1308 fflush(stdout);
1309
1310 if (!csv_output) {
1311 fprintf(output, "\n");
1312 fprintf(output, " Performance counter stats for ");
1313 if (target.system_wide)
1314 fprintf(output, "\'system wide");
1315 else if (target.cpu_list)
1316 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1317 else if (!target__has_task(&target)) {
1318 fprintf(output, "\'%s", argv[0]);
1319 for (i = 1; i < argc; i++)
1320 fprintf(output, " %s", argv[i]);
1321 } else if (target.pid)
1322 fprintf(output, "process id \'%s", target.pid);
1323 else
1324 fprintf(output, "thread id \'%s", target.tid);
1325
1326 fprintf(output, "\'");
1327 if (run_count > 1)
1328 fprintf(output, " (%d runs)", run_count);
1329 fprintf(output, ":\n\n");
1330 }
1331
1332 switch (aggr_mode) {
1333 case AGGR_CORE:
1334 case AGGR_SOCKET:
1335 print_aggr(NULL);
1336 break;
1337 case AGGR_GLOBAL:
1338 evlist__for_each(evsel_list, counter)
1339 print_counter_aggr(counter, NULL);
1340 break;
1341 case AGGR_NONE:
1342 evlist__for_each(evsel_list, counter)
1343 print_counter(counter, NULL);
1344 break;
1345 default:
1346 break;
1347 }
1348
1349 if (!csv_output) {
1350 if (!null_run)
1351 fprintf(output, "\n");
1352 fprintf(output, " %17.9f seconds time elapsed",
1353 avg_stats(&walltime_nsecs_stats)/1e9);
1354 if (run_count > 1) {
1355 fprintf(output, " ");
1356 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1357 avg_stats(&walltime_nsecs_stats));
1358 }
1359 fprintf(output, "\n\n");
1360 }
1361}
1362
1363static volatile int signr = -1;
1364
1365static void skip_signal(int signo)
1366{
1367 if ((child_pid == -1) || interval)
1368 done = 1;
1369
1370 signr = signo;
1371 /*
1372 * render child_pid harmless
1373 * won't send SIGTERM to a random
1374 * process in case of race condition
1375 * and fast PID recycling
1376 */
1377 child_pid = -1;
1378}
1379
1380static void sig_atexit(void)
1381{
1382 sigset_t set, oset;
1383
1384 /*
1385 * avoid race condition with SIGCHLD handler
1386 * in skip_signal() which is modifying child_pid
1387 * goal is to avoid send SIGTERM to a random
1388 * process
1389 */
1390 sigemptyset(&set);
1391 sigaddset(&set, SIGCHLD);
1392 sigprocmask(SIG_BLOCK, &set, &oset);
1393
1394 if (child_pid != -1)
1395 kill(child_pid, SIGTERM);
1396
1397 sigprocmask(SIG_SETMASK, &oset, NULL);
1398
1399 if (signr == -1)
1400 return;
1401
1402 signal(signr, SIG_DFL);
1403 kill(getpid(), signr);
1404}
1405
1406static int stat__set_big_num(const struct option *opt __maybe_unused,
1407 const char *s __maybe_unused, int unset)
1408{
1409 big_num_opt = unset ? 0 : 1;
1410 return 0;
1411}
1412
1413static int perf_stat_init_aggr_mode(void)
1414{
1415 switch (aggr_mode) {
1416 case AGGR_SOCKET:
1417 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1418 perror("cannot build socket map");
1419 return -1;
1420 }
1421 aggr_get_id = cpu_map__get_socket;
1422 break;
1423 case AGGR_CORE:
1424 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1425 perror("cannot build core map");
1426 return -1;
1427 }
1428 aggr_get_id = cpu_map__get_core;
1429 break;
1430 case AGGR_NONE:
1431 case AGGR_GLOBAL:
1432 default:
1433 break;
1434 }
1435 return 0;
1436}
1437
1438static int setup_events(const char * const *attrs, unsigned len)
1439{
1440 unsigned i;
1441
1442 for (i = 0; i < len; i++) {
1443 if (parse_events(evsel_list, attrs[i]))
1444 return -1;
1445 }
1446 return 0;
1447}
1448
1449/*
1450 * Add default attributes, if there were no attributes specified or
1451 * if -d/--detailed, -d -d or -d -d -d is used:
1452 */
1453static int add_default_attributes(void)
1454{
1455 struct perf_event_attr default_attrs[] = {
1456
1457 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1458 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1459 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1460 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1461
1462 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1463 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1464 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1465 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1466 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1467 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1468
1469};
1470
1471/*
1472 * Detailed stats (-d), covering the L1 and last level data caches:
1473 */
1474 struct perf_event_attr detailed_attrs[] = {
1475
1476 { .type = PERF_TYPE_HW_CACHE,
1477 .config =
1478 PERF_COUNT_HW_CACHE_L1D << 0 |
1479 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1480 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1481
1482 { .type = PERF_TYPE_HW_CACHE,
1483 .config =
1484 PERF_COUNT_HW_CACHE_L1D << 0 |
1485 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1486 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1487
1488 { .type = PERF_TYPE_HW_CACHE,
1489 .config =
1490 PERF_COUNT_HW_CACHE_LL << 0 |
1491 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1492 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1493
1494 { .type = PERF_TYPE_HW_CACHE,
1495 .config =
1496 PERF_COUNT_HW_CACHE_LL << 0 |
1497 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1498 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1499};
1500
1501/*
1502 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1503 */
1504 struct perf_event_attr very_detailed_attrs[] = {
1505
1506 { .type = PERF_TYPE_HW_CACHE,
1507 .config =
1508 PERF_COUNT_HW_CACHE_L1I << 0 |
1509 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1510 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1511
1512 { .type = PERF_TYPE_HW_CACHE,
1513 .config =
1514 PERF_COUNT_HW_CACHE_L1I << 0 |
1515 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1516 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1517
1518 { .type = PERF_TYPE_HW_CACHE,
1519 .config =
1520 PERF_COUNT_HW_CACHE_DTLB << 0 |
1521 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1522 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1523
1524 { .type = PERF_TYPE_HW_CACHE,
1525 .config =
1526 PERF_COUNT_HW_CACHE_DTLB << 0 |
1527 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1528 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1529
1530 { .type = PERF_TYPE_HW_CACHE,
1531 .config =
1532 PERF_COUNT_HW_CACHE_ITLB << 0 |
1533 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1534 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1535
1536 { .type = PERF_TYPE_HW_CACHE,
1537 .config =
1538 PERF_COUNT_HW_CACHE_ITLB << 0 |
1539 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1540 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1541
1542};
1543
1544/*
1545 * Very, very detailed stats (-d -d -d), adding prefetch events:
1546 */
1547 struct perf_event_attr very_very_detailed_attrs[] = {
1548
1549 { .type = PERF_TYPE_HW_CACHE,
1550 .config =
1551 PERF_COUNT_HW_CACHE_L1D << 0 |
1552 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1553 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1554
1555 { .type = PERF_TYPE_HW_CACHE,
1556 .config =
1557 PERF_COUNT_HW_CACHE_L1D << 0 |
1558 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1559 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1560};
1561
1562 /* Set attrs if no event is selected and !null_run: */
1563 if (null_run)
1564 return 0;
1565
1566 if (transaction_run) {
1567 int err;
1568 if (pmu_have_event("cpu", "cycles-ct") &&
1569 pmu_have_event("cpu", "el-start"))
1570 err = setup_events(transaction_attrs,
1571 ARRAY_SIZE(transaction_attrs));
1572 else
1573 err = setup_events(transaction_limited_attrs,
1574 ARRAY_SIZE(transaction_limited_attrs));
1575 if (err < 0) {
1576 fprintf(stderr, "Cannot set up transaction events\n");
1577 return -1;
1578 }
1579 return 0;
1580 }
1581
1582 if (!evsel_list->nr_entries) {
1583 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1584 return -1;
1585 }
1586
1587 /* Detailed events get appended to the event list: */
1588
1589 if (detailed_run < 1)
1590 return 0;
1591
1592 /* Append detailed run extra attributes: */
1593 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1594 return -1;
1595
1596 if (detailed_run < 2)
1597 return 0;
1598
1599 /* Append very detailed run extra attributes: */
1600 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1601 return -1;
1602
1603 if (detailed_run < 3)
1604 return 0;
1605
1606 /* Append very, very detailed run extra attributes: */
1607 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1608}
1609
1610int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1611{
1612 bool append_file = false;
1613 int output_fd = 0;
1614 const char *output_name = NULL;
1615 const struct option options[] = {
1616 OPT_BOOLEAN('T', "transaction", &transaction_run,
1617 "hardware transaction statistics"),
1618 OPT_CALLBACK('e', "event", &evsel_list, "event",
1619 "event selector. use 'perf list' to list available events",
1620 parse_events_option),
1621 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1622 "event filter", parse_filter),
1623 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1624 "child tasks do not inherit counters"),
1625 OPT_STRING('p', "pid", &target.pid, "pid",
1626 "stat events on existing process id"),
1627 OPT_STRING('t', "tid", &target.tid, "tid",
1628 "stat events on existing thread id"),
1629 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1630 "system-wide collection from all CPUs"),
1631 OPT_BOOLEAN('g', "group", &group,
1632 "put the counters into a counter group"),
1633 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1634 OPT_INCR('v', "verbose", &verbose,
1635 "be more verbose (show counter open errors, etc)"),
1636 OPT_INTEGER('r', "repeat", &run_count,
1637 "repeat command and print average + stddev (max: 100, forever: 0)"),
1638 OPT_BOOLEAN('n', "null", &null_run,
1639 "null run - dont start any counters"),
1640 OPT_INCR('d', "detailed", &detailed_run,
1641 "detailed run - start a lot of events"),
1642 OPT_BOOLEAN('S', "sync", &sync_run,
1643 "call sync() before starting a run"),
1644 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1645 "print large numbers with thousands\' separators",
1646 stat__set_big_num),
1647 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1648 "list of cpus to monitor in system-wide"),
1649 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1650 "disable CPU count aggregation", AGGR_NONE),
1651 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1652 "print counts with custom separator"),
1653 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1654 "monitor event in cgroup name only", parse_cgroups),
1655 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1656 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1657 OPT_INTEGER(0, "log-fd", &output_fd,
1658 "log output to fd, instead of stderr"),
1659 OPT_STRING(0, "pre", &pre_cmd, "command",
1660 "command to run prior to the measured command"),
1661 OPT_STRING(0, "post", &post_cmd, "command",
1662 "command to run after to the measured command"),
1663 OPT_UINTEGER('I', "interval-print", &interval,
1664 "print counts at regular interval in ms (>= 100)"),
1665 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1666 "aggregate counts per processor socket", AGGR_SOCKET),
1667 OPT_SET_UINT(0, "per-core", &aggr_mode,
1668 "aggregate counts per physical processor core", AGGR_CORE),
1669 OPT_UINTEGER('D', "delay", &initial_delay,
1670 "ms to wait before starting measurement after program start"),
1671 OPT_END()
1672 };
1673 const char * const stat_usage[] = {
1674 "perf stat [<options>] [<command>]",
1675 NULL
1676 };
1677 int status = -EINVAL, run_idx;
1678 const char *mode;
1679
1680 setlocale(LC_ALL, "");
1681
1682 evsel_list = perf_evlist__new();
1683 if (evsel_list == NULL)
1684 return -ENOMEM;
1685
1686 argc = parse_options(argc, argv, options, stat_usage,
1687 PARSE_OPT_STOP_AT_NON_OPTION);
1688
1689 output = stderr;
1690 if (output_name && strcmp(output_name, "-"))
1691 output = NULL;
1692
1693 if (output_name && output_fd) {
1694 fprintf(stderr, "cannot use both --output and --log-fd\n");
1695 parse_options_usage(stat_usage, options, "o", 1);
1696 parse_options_usage(NULL, options, "log-fd", 0);
1697 goto out;
1698 }
1699
1700 if (output_fd < 0) {
1701 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1702 parse_options_usage(stat_usage, options, "log-fd", 0);
1703 goto out;
1704 }
1705
1706 if (!output) {
1707 struct timespec tm;
1708 mode = append_file ? "a" : "w";
1709
1710 output = fopen(output_name, mode);
1711 if (!output) {
1712 perror("failed to create output file");
1713 return -1;
1714 }
1715 clock_gettime(CLOCK_REALTIME, &tm);
1716 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1717 } else if (output_fd > 0) {
1718 mode = append_file ? "a" : "w";
1719 output = fdopen(output_fd, mode);
1720 if (!output) {
1721 perror("Failed opening logfd");
1722 return -errno;
1723 }
1724 }
1725
1726 if (csv_sep) {
1727 csv_output = true;
1728 if (!strcmp(csv_sep, "\\t"))
1729 csv_sep = "\t";
1730 } else
1731 csv_sep = DEFAULT_SEPARATOR;
1732
1733 /*
1734 * let the spreadsheet do the pretty-printing
1735 */
1736 if (csv_output) {
1737 /* User explicitly passed -B? */
1738 if (big_num_opt == 1) {
1739 fprintf(stderr, "-B option not supported with -x\n");
1740 parse_options_usage(stat_usage, options, "B", 1);
1741 parse_options_usage(NULL, options, "x", 1);
1742 goto out;
1743 } else /* Nope, so disable big number formatting */
1744 big_num = false;
1745 } else if (big_num_opt == 0) /* User passed --no-big-num */
1746 big_num = false;
1747
1748 if (!argc && target__none(&target))
1749 usage_with_options(stat_usage, options);
1750
1751 if (run_count < 0) {
1752 pr_err("Run count must be a positive number\n");
1753 parse_options_usage(stat_usage, options, "r", 1);
1754 goto out;
1755 } else if (run_count == 0) {
1756 forever = true;
1757 run_count = 1;
1758 }
1759
1760 /* no_aggr, cgroup are for system-wide only */
1761 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
1762 !target__has_cpu(&target)) {
1763 fprintf(stderr, "both cgroup and no-aggregation "
1764 "modes only available in system-wide mode\n");
1765
1766 parse_options_usage(stat_usage, options, "G", 1);
1767 parse_options_usage(NULL, options, "A", 1);
1768 parse_options_usage(NULL, options, "a", 1);
1769 goto out;
1770 }
1771
1772 if (add_default_attributes())
1773 goto out;
1774
1775 target__validate(&target);
1776
1777 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1778 if (target__has_task(&target)) {
1779 pr_err("Problems finding threads of monitor\n");
1780 parse_options_usage(stat_usage, options, "p", 1);
1781 parse_options_usage(NULL, options, "t", 1);
1782 } else if (target__has_cpu(&target)) {
1783 perror("failed to parse CPUs map");
1784 parse_options_usage(stat_usage, options, "C", 1);
1785 parse_options_usage(NULL, options, "a", 1);
1786 }
1787 goto out;
1788 }
1789 if (interval && interval < 100) {
1790 pr_err("print interval must be >= 100ms\n");
1791 parse_options_usage(stat_usage, options, "I", 1);
1792 goto out;
1793 }
1794
1795 if (perf_evlist__alloc_stats(evsel_list, interval))
1796 goto out;
1797
1798 if (perf_stat_init_aggr_mode())
1799 goto out;
1800
1801 /*
1802 * We dont want to block the signals - that would cause
1803 * child tasks to inherit that and Ctrl-C would not work.
1804 * What we want is for Ctrl-C to work in the exec()-ed
1805 * task, but being ignored by perf stat itself:
1806 */
1807 atexit(sig_atexit);
1808 if (!forever)
1809 signal(SIGINT, skip_signal);
1810 signal(SIGCHLD, skip_signal);
1811 signal(SIGALRM, skip_signal);
1812 signal(SIGABRT, skip_signal);
1813
1814 status = 0;
1815 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1816 if (run_count != 1 && verbose)
1817 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1818 run_idx + 1);
1819
1820 status = run_perf_stat(argc, argv);
1821 if (forever && status != -1) {
1822 print_stat(argc, argv);
1823 perf_stat__reset_stats(evsel_list);
1824 }
1825 }
1826
1827 if (!forever && status != -1 && !interval)
1828 print_stat(argc, argv);
1829
1830 perf_evlist__free_stats(evsel_list);
1831out:
1832 perf_evlist__delete(evsel_list);
1833 return status;
1834}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * builtin-stat.c
4 *
5 * Builtin stat command: Give a precise performance counters summary
6 * overview about any workload, CPU or specific PID.
7 *
8 * Sample output:
9
10 $ perf stat ./hackbench 10
11
12 Time: 0.118
13
14 Performance counter stats for './hackbench 10':
15
16 1708.761321 task-clock # 11.037 CPUs utilized
17 41,190 context-switches # 0.024 M/sec
18 6,735 CPU-migrations # 0.004 M/sec
19 17,318 page-faults # 0.010 M/sec
20 5,205,202,243 cycles # 3.046 GHz
21 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
22 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
23 2,603,501,247 instructions # 0.50 insns per cycle
24 # 1.48 stalled cycles per insn
25 484,357,498 branches # 283.455 M/sec
26 6,388,934 branch-misses # 1.32% of all branches
27
28 0.154822978 seconds time elapsed
29
30 *
31 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
32 *
33 * Improvements and fixes by:
34 *
35 * Arjan van de Ven <arjan@linux.intel.com>
36 * Yanmin Zhang <yanmin.zhang@intel.com>
37 * Wu Fengguang <fengguang.wu@intel.com>
38 * Mike Galbraith <efault@gmx.de>
39 * Paul Mackerras <paulus@samba.org>
40 * Jaswinder Singh Rajput <jaswinder@kernel.org>
41 */
42
43#include "builtin.h"
44#include "util/cgroup.h"
45#include <subcmd/parse-options.h>
46#include "util/parse-events.h"
47#include "util/pmus.h"
48#include "util/pmu.h"
49#include "util/tool_pmu.h"
50#include "util/event.h"
51#include "util/evlist.h"
52#include "util/evsel.h"
53#include "util/debug.h"
54#include "util/color.h"
55#include "util/stat.h"
56#include "util/header.h"
57#include "util/cpumap.h"
58#include "util/thread_map.h"
59#include "util/counts.h"
60#include "util/topdown.h"
61#include "util/session.h"
62#include "util/tool.h"
63#include "util/string2.h"
64#include "util/metricgroup.h"
65#include "util/synthetic-events.h"
66#include "util/target.h"
67#include "util/time-utils.h"
68#include "util/top.h"
69#include "util/affinity.h"
70#include "util/pfm.h"
71#include "util/bpf_counter.h"
72#include "util/iostat.h"
73#include "util/util.h"
74#include "util/intel-tpebs.h"
75#include "asm/bug.h"
76
77#include <linux/time64.h>
78#include <linux/zalloc.h>
79#include <api/fs/fs.h>
80#include <errno.h>
81#include <signal.h>
82#include <stdlib.h>
83#include <sys/prctl.h>
84#include <inttypes.h>
85#include <locale.h>
86#include <math.h>
87#include <sys/types.h>
88#include <sys/stat.h>
89#include <sys/wait.h>
90#include <unistd.h>
91#include <sys/time.h>
92#include <sys/resource.h>
93#include <linux/err.h>
94
95#include <linux/ctype.h>
96#include <perf/evlist.h>
97#include <internal/threadmap.h>
98
99#define DEFAULT_SEPARATOR " "
100#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
101
102static void print_counters(struct timespec *ts, int argc, const char **argv);
103
104static struct evlist *evsel_list;
105static struct parse_events_option_args parse_events_option_args = {
106 .evlistp = &evsel_list,
107};
108
109static bool all_counters_use_bpf = true;
110
111static struct target target = {
112 .uid = UINT_MAX,
113};
114
115#define METRIC_ONLY_LEN 20
116
117static volatile sig_atomic_t child_pid = -1;
118static int detailed_run = 0;
119static bool transaction_run;
120static bool topdown_run = false;
121static bool smi_cost = false;
122static bool smi_reset = false;
123static int big_num_opt = -1;
124static const char *pre_cmd = NULL;
125static const char *post_cmd = NULL;
126static bool sync_run = false;
127static bool forever = false;
128static bool force_metric_only = false;
129static struct timespec ref_time;
130static bool append_file;
131static bool interval_count;
132static const char *output_name;
133static int output_fd;
134static char *metrics;
135
136struct perf_stat {
137 bool record;
138 struct perf_data data;
139 struct perf_session *session;
140 u64 bytes_written;
141 struct perf_tool tool;
142 bool maps_allocated;
143 struct perf_cpu_map *cpus;
144 struct perf_thread_map *threads;
145 enum aggr_mode aggr_mode;
146 u32 aggr_level;
147};
148
149static struct perf_stat perf_stat;
150#define STAT_RECORD perf_stat.record
151
152static volatile sig_atomic_t done = 0;
153
154static struct perf_stat_config stat_config = {
155 .aggr_mode = AGGR_GLOBAL,
156 .aggr_level = MAX_CACHE_LVL + 1,
157 .scale = true,
158 .unit_width = 4, /* strlen("unit") */
159 .run_count = 1,
160 .metric_only_len = METRIC_ONLY_LEN,
161 .walltime_nsecs_stats = &walltime_nsecs_stats,
162 .ru_stats = &ru_stats,
163 .big_num = true,
164 .ctl_fd = -1,
165 .ctl_fd_ack = -1,
166 .iostat_run = false,
167};
168
169/* Options set from the command line. */
170struct opt_aggr_mode {
171 bool node, socket, die, cluster, cache, core, thread, no_aggr;
172};
173
174/* Turn command line option into most generic aggregation mode setting. */
175static enum aggr_mode opt_aggr_mode_to_aggr_mode(struct opt_aggr_mode *opt_mode)
176{
177 enum aggr_mode mode = AGGR_GLOBAL;
178
179 if (opt_mode->node)
180 mode = AGGR_NODE;
181 if (opt_mode->socket)
182 mode = AGGR_SOCKET;
183 if (opt_mode->die)
184 mode = AGGR_DIE;
185 if (opt_mode->cluster)
186 mode = AGGR_CLUSTER;
187 if (opt_mode->cache)
188 mode = AGGR_CACHE;
189 if (opt_mode->core)
190 mode = AGGR_CORE;
191 if (opt_mode->thread)
192 mode = AGGR_THREAD;
193 if (opt_mode->no_aggr)
194 mode = AGGR_NONE;
195 return mode;
196}
197
198static void evlist__check_cpu_maps(struct evlist *evlist)
199{
200 struct evsel *evsel, *warned_leader = NULL;
201
202 evlist__for_each_entry(evlist, evsel) {
203 struct evsel *leader = evsel__leader(evsel);
204
205 /* Check that leader matches cpus with each member. */
206 if (leader == evsel)
207 continue;
208 if (perf_cpu_map__equal(leader->core.cpus, evsel->core.cpus))
209 continue;
210
211 /* If there's mismatch disable the group and warn user. */
212 if (warned_leader != leader) {
213 char buf[200];
214
215 pr_warning("WARNING: grouped events cpus do not match.\n"
216 "Events with CPUs not matching the leader will "
217 "be removed from the group.\n");
218 evsel__group_desc(leader, buf, sizeof(buf));
219 pr_warning(" %s\n", buf);
220 warned_leader = leader;
221 }
222 if (verbose > 0) {
223 char buf[200];
224
225 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
226 pr_warning(" %s: %s\n", leader->name, buf);
227 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
228 pr_warning(" %s: %s\n", evsel->name, buf);
229 }
230
231 evsel__remove_from_group(evsel, leader);
232 }
233}
234
235static inline void diff_timespec(struct timespec *r, struct timespec *a,
236 struct timespec *b)
237{
238 r->tv_sec = a->tv_sec - b->tv_sec;
239 if (a->tv_nsec < b->tv_nsec) {
240 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
241 r->tv_sec--;
242 } else {
243 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
244 }
245}
246
247static void perf_stat__reset_stats(void)
248{
249 evlist__reset_stats(evsel_list);
250 perf_stat__reset_shadow_stats();
251}
252
253static int process_synthesized_event(const struct perf_tool *tool __maybe_unused,
254 union perf_event *event,
255 struct perf_sample *sample __maybe_unused,
256 struct machine *machine __maybe_unused)
257{
258 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
259 pr_err("failed to write perf data, error: %m\n");
260 return -1;
261 }
262
263 perf_stat.bytes_written += event->header.size;
264 return 0;
265}
266
267static int write_stat_round_event(u64 tm, u64 type)
268{
269 return perf_event__synthesize_stat_round(NULL, tm, type,
270 process_synthesized_event,
271 NULL);
272}
273
274#define WRITE_STAT_ROUND_EVENT(time, interval) \
275 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
276
277#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
278
279static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,
280 struct perf_counts_values *count)
281{
282 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
283 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
284
285 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
286 process_synthesized_event, NULL);
287}
288
289static int read_single_counter(struct evsel *counter, int cpu_map_idx, int thread)
290{
291 int err = evsel__read_counter(counter, cpu_map_idx, thread);
292
293 /*
294 * Reading user and system time will fail when the process
295 * terminates. Use the wait4 values in that case.
296 */
297 if (err && cpu_map_idx == 0 &&
298 (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME ||
299 evsel__tool_event(counter) == TOOL_PMU__EVENT_SYSTEM_TIME)) {
300 u64 val, *start_time;
301 struct perf_counts_values *count =
302 perf_counts(counter->counts, cpu_map_idx, thread);
303
304 start_time = xyarray__entry(counter->start_times, cpu_map_idx, thread);
305 if (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME)
306 val = ru_stats.ru_utime_usec_stat.mean;
307 else
308 val = ru_stats.ru_stime_usec_stat.mean;
309 count->ena = count->run = *start_time + val;
310 count->val = val;
311 return 0;
312 }
313 return err;
314}
315
316/*
317 * Read out the results of a single counter:
318 * do not aggregate counts across CPUs in system-wide mode
319 */
320static int read_counter_cpu(struct evsel *counter, int cpu_map_idx)
321{
322 int nthreads = perf_thread_map__nr(evsel_list->core.threads);
323 int thread;
324
325 if (!counter->supported)
326 return -ENOENT;
327
328 for (thread = 0; thread < nthreads; thread++) {
329 struct perf_counts_values *count;
330
331 count = perf_counts(counter->counts, cpu_map_idx, thread);
332
333 /*
334 * The leader's group read loads data into its group members
335 * (via evsel__read_counter()) and sets their count->loaded.
336 */
337 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&
338 read_single_counter(counter, cpu_map_idx, thread)) {
339 counter->counts->scaled = -1;
340 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
341 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
342 return -1;
343 }
344
345 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
346
347 if (STAT_RECORD) {
348 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {
349 pr_err("failed to write stat event\n");
350 return -1;
351 }
352 }
353
354 if (verbose > 1) {
355 fprintf(stat_config.output,
356 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
357 evsel__name(counter),
358 perf_cpu_map__cpu(evsel__cpus(counter),
359 cpu_map_idx).cpu,
360 count->val, count->ena, count->run);
361 }
362 }
363
364 return 0;
365}
366
367static int read_affinity_counters(void)
368{
369 struct evlist_cpu_iterator evlist_cpu_itr;
370 struct affinity saved_affinity, *affinity;
371
372 if (all_counters_use_bpf)
373 return 0;
374
375 if (!target__has_cpu(&target) || target__has_per_thread(&target))
376 affinity = NULL;
377 else if (affinity__setup(&saved_affinity) < 0)
378 return -1;
379 else
380 affinity = &saved_affinity;
381
382 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
383 struct evsel *counter = evlist_cpu_itr.evsel;
384
385 if (evsel__is_bpf(counter))
386 continue;
387
388 if (!counter->err)
389 counter->err = read_counter_cpu(counter, evlist_cpu_itr.cpu_map_idx);
390 }
391 if (affinity)
392 affinity__cleanup(&saved_affinity);
393
394 return 0;
395}
396
397static int read_bpf_map_counters(void)
398{
399 struct evsel *counter;
400 int err;
401
402 evlist__for_each_entry(evsel_list, counter) {
403 if (!evsel__is_bpf(counter))
404 continue;
405
406 err = bpf_counter__read(counter);
407 if (err)
408 return err;
409 }
410 return 0;
411}
412
413static int read_counters(void)
414{
415 if (!stat_config.stop_read_counter) {
416 if (read_bpf_map_counters() ||
417 read_affinity_counters())
418 return -1;
419 }
420 return 0;
421}
422
423static void process_counters(void)
424{
425 struct evsel *counter;
426
427 evlist__for_each_entry(evsel_list, counter) {
428 if (counter->err)
429 pr_debug("failed to read counter %s\n", counter->name);
430 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
431 pr_warning("failed to process counter %s\n", counter->name);
432 counter->err = 0;
433 }
434
435 perf_stat_merge_counters(&stat_config, evsel_list);
436 perf_stat_process_percore(&stat_config, evsel_list);
437}
438
439static void process_interval(void)
440{
441 struct timespec ts, rs;
442
443 clock_gettime(CLOCK_MONOTONIC, &ts);
444 diff_timespec(&rs, &ts, &ref_time);
445
446 evlist__reset_aggr_stats(evsel_list);
447
448 if (read_counters() == 0)
449 process_counters();
450
451 if (STAT_RECORD) {
452 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
453 pr_err("failed to write stat round event\n");
454 }
455
456 init_stats(&walltime_nsecs_stats);
457 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);
458 print_counters(&rs, 0, NULL);
459}
460
461static bool handle_interval(unsigned int interval, int *times)
462{
463 if (interval) {
464 process_interval();
465 if (interval_count && !(--(*times)))
466 return true;
467 }
468 return false;
469}
470
471static int enable_counters(void)
472{
473 struct evsel *evsel;
474 int err;
475
476 evlist__for_each_entry(evsel_list, evsel) {
477 if (!evsel__is_bpf(evsel))
478 continue;
479
480 err = bpf_counter__enable(evsel);
481 if (err)
482 return err;
483 }
484
485 if (!target__enable_on_exec(&target)) {
486 if (!all_counters_use_bpf)
487 evlist__enable(evsel_list);
488 }
489 return 0;
490}
491
492static void disable_counters(void)
493{
494 struct evsel *counter;
495
496 /*
497 * If we don't have tracee (attaching to task or cpu), counters may
498 * still be running. To get accurate group ratios, we must stop groups
499 * from counting before reading their constituent counters.
500 */
501 if (!target__none(&target)) {
502 evlist__for_each_entry(evsel_list, counter)
503 bpf_counter__disable(counter);
504 if (!all_counters_use_bpf)
505 evlist__disable(evsel_list);
506 }
507}
508
509static volatile sig_atomic_t workload_exec_errno;
510
511/*
512 * evlist__prepare_workload will send a SIGUSR1
513 * if the fork fails, since we asked by setting its
514 * want_signal to true.
515 */
516static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
517 void *ucontext __maybe_unused)
518{
519 workload_exec_errno = info->si_value.sival_int;
520}
521
522static bool evsel__should_store_id(struct evsel *counter)
523{
524 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
525}
526
527static bool is_target_alive(struct target *_target,
528 struct perf_thread_map *threads)
529{
530 struct stat st;
531 int i;
532
533 if (!target__has_task(_target))
534 return true;
535
536 for (i = 0; i < threads->nr; i++) {
537 char path[PATH_MAX];
538
539 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
540 threads->map[i].pid);
541
542 if (!stat(path, &st))
543 return true;
544 }
545
546 return false;
547}
548
549static void process_evlist(struct evlist *evlist, unsigned int interval)
550{
551 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
552
553 if (evlist__ctlfd_process(evlist, &cmd) > 0) {
554 switch (cmd) {
555 case EVLIST_CTL_CMD_ENABLE:
556 fallthrough;
557 case EVLIST_CTL_CMD_DISABLE:
558 if (interval)
559 process_interval();
560 break;
561 case EVLIST_CTL_CMD_SNAPSHOT:
562 case EVLIST_CTL_CMD_ACK:
563 case EVLIST_CTL_CMD_UNSUPPORTED:
564 case EVLIST_CTL_CMD_EVLIST:
565 case EVLIST_CTL_CMD_STOP:
566 case EVLIST_CTL_CMD_PING:
567 default:
568 break;
569 }
570 }
571}
572
573static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
574 int *time_to_sleep)
575{
576 int tts = *time_to_sleep;
577 struct timespec time_diff;
578
579 diff_timespec(&time_diff, time_stop, time_start);
580
581 tts -= time_diff.tv_sec * MSEC_PER_SEC +
582 time_diff.tv_nsec / NSEC_PER_MSEC;
583
584 if (tts < 0)
585 tts = 0;
586
587 *time_to_sleep = tts;
588}
589
590static int dispatch_events(bool forks, int timeout, int interval, int *times)
591{
592 int child_exited = 0, status = 0;
593 int time_to_sleep, sleep_time;
594 struct timespec time_start, time_stop;
595
596 if (interval)
597 sleep_time = interval;
598 else if (timeout)
599 sleep_time = timeout;
600 else
601 sleep_time = 1000;
602
603 time_to_sleep = sleep_time;
604
605 while (!done) {
606 if (forks)
607 child_exited = waitpid(child_pid, &status, WNOHANG);
608 else
609 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
610
611 if (child_exited)
612 break;
613
614 clock_gettime(CLOCK_MONOTONIC, &time_start);
615 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
616 if (timeout || handle_interval(interval, times))
617 break;
618 time_to_sleep = sleep_time;
619 } else { /* fd revent */
620 process_evlist(evsel_list, interval);
621 clock_gettime(CLOCK_MONOTONIC, &time_stop);
622 compute_tts(&time_start, &time_stop, &time_to_sleep);
623 }
624 }
625
626 return status;
627}
628
629enum counter_recovery {
630 COUNTER_SKIP,
631 COUNTER_RETRY,
632 COUNTER_FATAL,
633};
634
635static enum counter_recovery stat_handle_error(struct evsel *counter)
636{
637 char msg[BUFSIZ];
638 /*
639 * PPC returns ENXIO for HW counters until 2.6.37
640 * (behavior changed with commit b0a873e).
641 */
642 if (errno == EINVAL || errno == ENOSYS ||
643 errno == ENOENT || errno == ENXIO) {
644 if (verbose > 0)
645 ui__warning("%s event is not supported by the kernel.\n",
646 evsel__name(counter));
647 counter->supported = false;
648 /*
649 * errored is a sticky flag that means one of the counter's
650 * cpu event had a problem and needs to be reexamined.
651 */
652 counter->errored = true;
653
654 if ((evsel__leader(counter) != counter) ||
655 !(counter->core.leader->nr_members > 1))
656 return COUNTER_SKIP;
657 } else if (evsel__fallback(counter, &target, errno, msg, sizeof(msg))) {
658 if (verbose > 0)
659 ui__warning("%s\n", msg);
660 return COUNTER_RETRY;
661 } else if (target__has_per_thread(&target) && errno != EOPNOTSUPP &&
662 evsel_list->core.threads &&
663 evsel_list->core.threads->err_thread != -1) {
664 /*
665 * For global --per-thread case, skip current
666 * error thread.
667 */
668 if (!thread_map__remove(evsel_list->core.threads,
669 evsel_list->core.threads->err_thread)) {
670 evsel_list->core.threads->err_thread = -1;
671 return COUNTER_RETRY;
672 }
673 } else if (counter->skippable) {
674 if (verbose > 0)
675 ui__warning("skipping event %s that kernel failed to open .\n",
676 evsel__name(counter));
677 counter->supported = false;
678 counter->errored = true;
679 return COUNTER_SKIP;
680 }
681
682 if (errno == EOPNOTSUPP) {
683 if (verbose > 0) {
684 ui__warning("%s event is not supported by the kernel.\n",
685 evsel__name(counter));
686 }
687 counter->supported = false;
688 counter->errored = true;
689
690 if ((evsel__leader(counter) != counter) ||
691 !(counter->core.leader->nr_members > 1))
692 return COUNTER_SKIP;
693 }
694
695 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
696 ui__error("%s\n", msg);
697
698 if (child_pid != -1)
699 kill(child_pid, SIGTERM);
700
701 tpebs_delete();
702
703 return COUNTER_FATAL;
704}
705
706static int __run_perf_stat(int argc, const char **argv, int run_idx)
707{
708 int interval = stat_config.interval;
709 int times = stat_config.times;
710 int timeout = stat_config.timeout;
711 char msg[BUFSIZ];
712 unsigned long long t0, t1;
713 struct evsel *counter;
714 size_t l;
715 int status = 0;
716 const bool forks = (argc > 0);
717 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
718 struct evlist_cpu_iterator evlist_cpu_itr;
719 struct affinity saved_affinity, *affinity = NULL;
720 int err;
721 bool second_pass = false;
722
723 if (forks) {
724 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
725 perror("failed to prepare workload");
726 return -1;
727 }
728 child_pid = evsel_list->workload.pid;
729 }
730
731 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
732 if (affinity__setup(&saved_affinity) < 0) {
733 err = -1;
734 goto err_out;
735 }
736 affinity = &saved_affinity;
737 }
738
739 evlist__for_each_entry(evsel_list, counter) {
740 counter->reset_group = false;
741 if (bpf_counter__load(counter, &target)) {
742 err = -1;
743 goto err_out;
744 }
745 if (!(evsel__is_bperf(counter)))
746 all_counters_use_bpf = false;
747 }
748
749 evlist__reset_aggr_stats(evsel_list);
750
751 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
752 counter = evlist_cpu_itr.evsel;
753
754 /*
755 * bperf calls evsel__open_per_cpu() in bperf__load(), so
756 * no need to call it again here.
757 */
758 if (target.use_bpf)
759 break;
760
761 if (counter->reset_group || counter->errored)
762 continue;
763 if (evsel__is_bperf(counter))
764 continue;
765try_again:
766 if (create_perf_stat_counter(counter, &stat_config, &target,
767 evlist_cpu_itr.cpu_map_idx) < 0) {
768
769 /*
770 * Weak group failed. We cannot just undo this here
771 * because earlier CPUs might be in group mode, and the kernel
772 * doesn't support mixing group and non group reads. Defer
773 * it to later.
774 * Don't close here because we're in the wrong affinity.
775 */
776 if ((errno == EINVAL || errno == EBADF) &&
777 evsel__leader(counter) != counter &&
778 counter->weak_group) {
779 evlist__reset_weak_group(evsel_list, counter, false);
780 assert(counter->reset_group);
781 second_pass = true;
782 continue;
783 }
784
785 switch (stat_handle_error(counter)) {
786 case COUNTER_FATAL:
787 err = -1;
788 goto err_out;
789 case COUNTER_RETRY:
790 goto try_again;
791 case COUNTER_SKIP:
792 continue;
793 default:
794 break;
795 }
796
797 }
798 counter->supported = true;
799 }
800
801 if (second_pass) {
802 /*
803 * Now redo all the weak group after closing them,
804 * and also close errored counters.
805 */
806
807 /* First close errored or weak retry */
808 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
809 counter = evlist_cpu_itr.evsel;
810
811 if (!counter->reset_group && !counter->errored)
812 continue;
813
814 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
815 }
816 /* Now reopen weak */
817 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
818 counter = evlist_cpu_itr.evsel;
819
820 if (!counter->reset_group)
821 continue;
822try_again_reset:
823 pr_debug2("reopening weak %s\n", evsel__name(counter));
824 if (create_perf_stat_counter(counter, &stat_config, &target,
825 evlist_cpu_itr.cpu_map_idx) < 0) {
826
827 switch (stat_handle_error(counter)) {
828 case COUNTER_FATAL:
829 err = -1;
830 goto err_out;
831 case COUNTER_RETRY:
832 goto try_again_reset;
833 case COUNTER_SKIP:
834 continue;
835 default:
836 break;
837 }
838 }
839 counter->supported = true;
840 }
841 }
842 affinity__cleanup(affinity);
843 affinity = NULL;
844
845 evlist__for_each_entry(evsel_list, counter) {
846 if (!counter->supported) {
847 perf_evsel__free_fd(&counter->core);
848 continue;
849 }
850
851 l = strlen(counter->unit);
852 if (l > stat_config.unit_width)
853 stat_config.unit_width = l;
854
855 if (evsel__should_store_id(counter) &&
856 evsel__store_ids(counter, evsel_list)) {
857 err = -1;
858 goto err_out;
859 }
860 }
861
862 if (evlist__apply_filters(evsel_list, &counter, &target)) {
863 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
864 counter->filter, evsel__name(counter), errno,
865 str_error_r(errno, msg, sizeof(msg)));
866 return -1;
867 }
868
869 if (STAT_RECORD) {
870 int fd = perf_data__fd(&perf_stat.data);
871
872 if (is_pipe) {
873 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
874 } else {
875 err = perf_session__write_header(perf_stat.session, evsel_list,
876 fd, false);
877 }
878
879 if (err < 0)
880 goto err_out;
881
882 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
883 process_synthesized_event, is_pipe);
884 if (err < 0)
885 goto err_out;
886
887 }
888
889 if (target.initial_delay) {
890 pr_info(EVLIST_DISABLED_MSG);
891 } else {
892 err = enable_counters();
893 if (err) {
894 err = -1;
895 goto err_out;
896 }
897 }
898
899 /* Exec the command, if any */
900 if (forks)
901 evlist__start_workload(evsel_list);
902
903 if (target.initial_delay > 0) {
904 usleep(target.initial_delay * USEC_PER_MSEC);
905 err = enable_counters();
906 if (err) {
907 err = -1;
908 goto err_out;
909 }
910
911 pr_info(EVLIST_ENABLED_MSG);
912 }
913
914 t0 = rdclock();
915 clock_gettime(CLOCK_MONOTONIC, &ref_time);
916
917 if (forks) {
918 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
919 status = dispatch_events(forks, timeout, interval, ×);
920 if (child_pid != -1) {
921 if (timeout)
922 kill(child_pid, SIGTERM);
923 wait4(child_pid, &status, 0, &stat_config.ru_data);
924 }
925
926 if (workload_exec_errno) {
927 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
928 pr_err("Workload failed: %s\n", emsg);
929 err = -1;
930 goto err_out;
931 }
932
933 if (WIFSIGNALED(status))
934 psignal(WTERMSIG(status), argv[0]);
935 } else {
936 status = dispatch_events(forks, timeout, interval, ×);
937 }
938
939 disable_counters();
940
941 t1 = rdclock();
942
943 if (stat_config.walltime_run_table)
944 stat_config.walltime_run[run_idx] = t1 - t0;
945
946 if (interval && stat_config.summary) {
947 stat_config.interval = 0;
948 stat_config.stop_read_counter = true;
949 init_stats(&walltime_nsecs_stats);
950 update_stats(&walltime_nsecs_stats, t1 - t0);
951
952 evlist__copy_prev_raw_counts(evsel_list);
953 evlist__reset_prev_raw_counts(evsel_list);
954 evlist__reset_aggr_stats(evsel_list);
955 } else {
956 update_stats(&walltime_nsecs_stats, t1 - t0);
957 update_rusage_stats(&ru_stats, &stat_config.ru_data);
958 }
959
960 /*
961 * Closing a group leader splits the group, and as we only disable
962 * group leaders, results in remaining events becoming enabled. To
963 * avoid arbitrary skew, we must read all counters before closing any
964 * group leaders.
965 */
966 if (read_counters() == 0)
967 process_counters();
968
969 /*
970 * We need to keep evsel_list alive, because it's processed
971 * later the evsel_list will be closed after.
972 */
973 if (!STAT_RECORD)
974 evlist__close(evsel_list);
975
976 return WEXITSTATUS(status);
977
978err_out:
979 if (forks)
980 evlist__cancel_workload(evsel_list);
981
982 affinity__cleanup(affinity);
983 return err;
984}
985
986/*
987 * Returns -1 for fatal errors which signifies to not continue
988 * when in repeat mode.
989 *
990 * Returns < -1 error codes when stat record is used. These
991 * result in the stat information being displayed, but writing
992 * to the file fails and is non fatal.
993 */
994static int run_perf_stat(int argc, const char **argv, int run_idx)
995{
996 int ret;
997
998 if (pre_cmd) {
999 ret = system(pre_cmd);
1000 if (ret)
1001 return ret;
1002 }
1003
1004 if (sync_run)
1005 sync();
1006
1007 ret = __run_perf_stat(argc, argv, run_idx);
1008 if (ret)
1009 return ret;
1010
1011 if (post_cmd) {
1012 ret = system(post_cmd);
1013 if (ret)
1014 return ret;
1015 }
1016
1017 return ret;
1018}
1019
1020static void print_counters(struct timespec *ts, int argc, const char **argv)
1021{
1022 /* Do not print anything if we record to the pipe. */
1023 if (STAT_RECORD && perf_stat.data.is_pipe)
1024 return;
1025 if (quiet)
1026 return;
1027
1028 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
1029}
1030
1031static volatile sig_atomic_t signr = -1;
1032
1033static void skip_signal(int signo)
1034{
1035 if ((child_pid == -1) || stat_config.interval)
1036 done = 1;
1037
1038 signr = signo;
1039 /*
1040 * render child_pid harmless
1041 * won't send SIGTERM to a random
1042 * process in case of race condition
1043 * and fast PID recycling
1044 */
1045 child_pid = -1;
1046}
1047
1048static void sig_atexit(void)
1049{
1050 sigset_t set, oset;
1051
1052 /*
1053 * avoid race condition with SIGCHLD handler
1054 * in skip_signal() which is modifying child_pid
1055 * goal is to avoid send SIGTERM to a random
1056 * process
1057 */
1058 sigemptyset(&set);
1059 sigaddset(&set, SIGCHLD);
1060 sigprocmask(SIG_BLOCK, &set, &oset);
1061
1062 if (child_pid != -1)
1063 kill(child_pid, SIGTERM);
1064
1065 sigprocmask(SIG_SETMASK, &oset, NULL);
1066
1067 if (signr == -1)
1068 return;
1069
1070 signal(signr, SIG_DFL);
1071 kill(getpid(), signr);
1072}
1073
1074void perf_stat__set_big_num(int set)
1075{
1076 stat_config.big_num = (set != 0);
1077}
1078
1079void perf_stat__set_no_csv_summary(int set)
1080{
1081 stat_config.no_csv_summary = (set != 0);
1082}
1083
1084static int stat__set_big_num(const struct option *opt __maybe_unused,
1085 const char *s __maybe_unused, int unset)
1086{
1087 big_num_opt = unset ? 0 : 1;
1088 perf_stat__set_big_num(!unset);
1089 return 0;
1090}
1091
1092static int enable_metric_only(const struct option *opt __maybe_unused,
1093 const char *s __maybe_unused, int unset)
1094{
1095 force_metric_only = true;
1096 stat_config.metric_only = !unset;
1097 return 0;
1098}
1099
1100static int append_metric_groups(const struct option *opt __maybe_unused,
1101 const char *str,
1102 int unset __maybe_unused)
1103{
1104 if (metrics) {
1105 char *tmp;
1106
1107 if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
1108 return -ENOMEM;
1109 free(metrics);
1110 metrics = tmp;
1111 } else {
1112 metrics = strdup(str);
1113 if (!metrics)
1114 return -ENOMEM;
1115 }
1116 return 0;
1117}
1118
1119static int parse_control_option(const struct option *opt,
1120 const char *str,
1121 int unset __maybe_unused)
1122{
1123 struct perf_stat_config *config = opt->value;
1124
1125 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1126}
1127
1128static int parse_stat_cgroups(const struct option *opt,
1129 const char *str, int unset)
1130{
1131 if (stat_config.cgroup_list) {
1132 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1133 return -1;
1134 }
1135
1136 return parse_cgroups(opt, str, unset);
1137}
1138
1139static int parse_cputype(const struct option *opt,
1140 const char *str,
1141 int unset __maybe_unused)
1142{
1143 const struct perf_pmu *pmu;
1144 struct evlist *evlist = *(struct evlist **)opt->value;
1145
1146 if (!list_empty(&evlist->core.entries)) {
1147 fprintf(stderr, "Must define cputype before events/metrics\n");
1148 return -1;
1149 }
1150
1151 pmu = perf_pmus__pmu_for_pmu_filter(str);
1152 if (!pmu) {
1153 fprintf(stderr, "--cputype %s is not supported!\n", str);
1154 return -1;
1155 }
1156 parse_events_option_args.pmu_filter = pmu->name;
1157
1158 return 0;
1159}
1160
1161static int parse_cache_level(const struct option *opt,
1162 const char *str,
1163 int unset __maybe_unused)
1164{
1165 int level;
1166 struct opt_aggr_mode *opt_aggr_mode = (struct opt_aggr_mode *)opt->value;
1167 u32 *aggr_level = (u32 *)opt->data;
1168
1169 /*
1170 * If no string is specified, aggregate based on the topology of
1171 * Last Level Cache (LLC). Since the LLC level can change from
1172 * architecture to architecture, set level greater than
1173 * MAX_CACHE_LVL which will be interpreted as LLC.
1174 */
1175 if (str == NULL) {
1176 level = MAX_CACHE_LVL + 1;
1177 goto out;
1178 }
1179
1180 /*
1181 * The format to specify cache level is LX or lX where X is the
1182 * cache level.
1183 */
1184 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) {
1185 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1186 MAX_CACHE_LVL,
1187 MAX_CACHE_LVL);
1188 return -EINVAL;
1189 }
1190
1191 level = atoi(&str[1]);
1192 if (level < 1) {
1193 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
1194 MAX_CACHE_LVL,
1195 MAX_CACHE_LVL);
1196 return -EINVAL;
1197 }
1198
1199 if (level > MAX_CACHE_LVL) {
1200 pr_err("perf only supports max cache level of %d.\n"
1201 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL);
1202 return -EINVAL;
1203 }
1204out:
1205 opt_aggr_mode->cache = true;
1206 *aggr_level = level;
1207 return 0;
1208}
1209
1210/**
1211 * Calculate the cache instance ID from the map in
1212 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1213 * Cache instance ID is the first CPU reported in the shared_cpu_list file.
1214 */
1215static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)
1216{
1217 int id;
1218 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map);
1219
1220 /*
1221 * If the map contains no CPU, consider the current CPU to
1222 * be the first online CPU in the cache domain else use the
1223 * first online CPU of the cache domain as the ID.
1224 */
1225 id = perf_cpu_map__min(cpu_map).cpu;
1226 if (id == -1)
1227 id = cpu.cpu;
1228
1229 /* Free the perf_cpu_map used to find the cache ID */
1230 perf_cpu_map__put(cpu_map);
1231
1232 return id;
1233}
1234
1235/**
1236 * cpu__get_cache_id - Returns 0 if successful in populating the
1237 * cache level and cache id. Cache level is read from
1238 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID
1239 * is the first CPU reported by
1240 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
1241 */
1242static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache)
1243{
1244 int ret = 0;
1245 u32 cache_level = stat_config.aggr_level;
1246 struct cpu_cache_level caches[MAX_CACHE_LVL];
1247 u32 i = 0, caches_cnt = 0;
1248
1249 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1250 cache->cache = -1;
1251
1252 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt);
1253 if (ret) {
1254 /*
1255 * If caches_cnt is not 0, cpu_cache_level data
1256 * was allocated when building the topology.
1257 * Free the allocated data before returning.
1258 */
1259 if (caches_cnt)
1260 goto free_caches;
1261
1262 return ret;
1263 }
1264
1265 if (!caches_cnt)
1266 return -1;
1267
1268 /*
1269 * Save the data for the highest level if no
1270 * level was specified by the user.
1271 */
1272 if (cache_level > MAX_CACHE_LVL) {
1273 int max_level_index = 0;
1274
1275 for (i = 1; i < caches_cnt; ++i) {
1276 if (caches[i].level > caches[max_level_index].level)
1277 max_level_index = i;
1278 }
1279
1280 cache->cache_lvl = caches[max_level_index].level;
1281 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map);
1282
1283 /* Reset i to 0 to free entire caches[] */
1284 i = 0;
1285 goto free_caches;
1286 }
1287
1288 for (i = 0; i < caches_cnt; ++i) {
1289 if (caches[i].level == cache_level) {
1290 cache->cache_lvl = cache_level;
1291 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1292 }
1293
1294 cpu_cache_level__free(&caches[i]);
1295 }
1296
1297free_caches:
1298 /*
1299 * Free all the allocated cpu_cache_level data.
1300 */
1301 while (i < caches_cnt)
1302 cpu_cache_level__free(&caches[i++]);
1303
1304 return ret;
1305}
1306
1307/**
1308 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache
1309 * level, die and socket populated with the cache instache ID, cache level,
1310 * die and socket for cpu. The function signature is compatible with
1311 * aggr_cpu_id_get_t.
1312 */
1313static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data)
1314{
1315 int ret;
1316 struct aggr_cpu_id id;
1317 struct perf_cache cache;
1318
1319 id = aggr_cpu_id__die(cpu, data);
1320 if (aggr_cpu_id__is_empty(&id))
1321 return id;
1322
1323 ret = cpu__get_cache_details(cpu, &cache);
1324 if (ret)
1325 return id;
1326
1327 id.cache_lvl = cache.cache_lvl;
1328 id.cache = cache.cache;
1329 return id;
1330}
1331
1332static const char *const aggr_mode__string[] = {
1333 [AGGR_CORE] = "core",
1334 [AGGR_CACHE] = "cache",
1335 [AGGR_CLUSTER] = "cluster",
1336 [AGGR_DIE] = "die",
1337 [AGGR_GLOBAL] = "global",
1338 [AGGR_NODE] = "node",
1339 [AGGR_NONE] = "none",
1340 [AGGR_SOCKET] = "socket",
1341 [AGGR_THREAD] = "thread",
1342 [AGGR_UNSET] = "unset",
1343};
1344
1345static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1346 struct perf_cpu cpu)
1347{
1348 return aggr_cpu_id__socket(cpu, /*data=*/NULL);
1349}
1350
1351static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1352 struct perf_cpu cpu)
1353{
1354 return aggr_cpu_id__die(cpu, /*data=*/NULL);
1355}
1356
1357static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused,
1358 struct perf_cpu cpu)
1359{
1360 return aggr_cpu_id__cache(cpu, /*data=*/NULL);
1361}
1362
1363static struct aggr_cpu_id perf_stat__get_cluster(struct perf_stat_config *config __maybe_unused,
1364 struct perf_cpu cpu)
1365{
1366 return aggr_cpu_id__cluster(cpu, /*data=*/NULL);
1367}
1368
1369static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1370 struct perf_cpu cpu)
1371{
1372 return aggr_cpu_id__core(cpu, /*data=*/NULL);
1373}
1374
1375static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1376 struct perf_cpu cpu)
1377{
1378 return aggr_cpu_id__node(cpu, /*data=*/NULL);
1379}
1380
1381static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
1382 struct perf_cpu cpu)
1383{
1384 return aggr_cpu_id__global(cpu, /*data=*/NULL);
1385}
1386
1387static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
1388 struct perf_cpu cpu)
1389{
1390 return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
1391}
1392
1393static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1394 aggr_get_id_t get_id, struct perf_cpu cpu)
1395{
1396 struct aggr_cpu_id id;
1397
1398 /* per-process mode - should use global aggr mode */
1399 if (cpu.cpu == -1)
1400 return get_id(config, cpu);
1401
1402 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
1403 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
1404
1405 id = config->cpus_aggr_map->map[cpu.cpu];
1406 return id;
1407}
1408
1409static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1410 struct perf_cpu cpu)
1411{
1412 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
1413}
1414
1415static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1416 struct perf_cpu cpu)
1417{
1418 return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
1419}
1420
1421static struct aggr_cpu_id perf_stat__get_cluster_cached(struct perf_stat_config *config,
1422 struct perf_cpu cpu)
1423{
1424 return perf_stat__get_aggr(config, perf_stat__get_cluster, cpu);
1425}
1426
1427static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config,
1428 struct perf_cpu cpu)
1429{
1430 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu);
1431}
1432
1433static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1434 struct perf_cpu cpu)
1435{
1436 return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
1437}
1438
1439static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1440 struct perf_cpu cpu)
1441{
1442 return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
1443}
1444
1445static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
1446 struct perf_cpu cpu)
1447{
1448 return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
1449}
1450
1451static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
1452 struct perf_cpu cpu)
1453{
1454 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
1455}
1456
1457static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
1458{
1459 switch (aggr_mode) {
1460 case AGGR_SOCKET:
1461 return aggr_cpu_id__socket;
1462 case AGGR_DIE:
1463 return aggr_cpu_id__die;
1464 case AGGR_CLUSTER:
1465 return aggr_cpu_id__cluster;
1466 case AGGR_CACHE:
1467 return aggr_cpu_id__cache;
1468 case AGGR_CORE:
1469 return aggr_cpu_id__core;
1470 case AGGR_NODE:
1471 return aggr_cpu_id__node;
1472 case AGGR_NONE:
1473 return aggr_cpu_id__cpu;
1474 case AGGR_GLOBAL:
1475 return aggr_cpu_id__global;
1476 case AGGR_THREAD:
1477 case AGGR_UNSET:
1478 case AGGR_MAX:
1479 default:
1480 return NULL;
1481 }
1482}
1483
1484static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
1485{
1486 switch (aggr_mode) {
1487 case AGGR_SOCKET:
1488 return perf_stat__get_socket_cached;
1489 case AGGR_DIE:
1490 return perf_stat__get_die_cached;
1491 case AGGR_CLUSTER:
1492 return perf_stat__get_cluster_cached;
1493 case AGGR_CACHE:
1494 return perf_stat__get_cache_id_cached;
1495 case AGGR_CORE:
1496 return perf_stat__get_core_cached;
1497 case AGGR_NODE:
1498 return perf_stat__get_node_cached;
1499 case AGGR_NONE:
1500 return perf_stat__get_cpu_cached;
1501 case AGGR_GLOBAL:
1502 return perf_stat__get_global_cached;
1503 case AGGR_THREAD:
1504 case AGGR_UNSET:
1505 case AGGR_MAX:
1506 default:
1507 return NULL;
1508 }
1509}
1510
1511static int perf_stat_init_aggr_mode(void)
1512{
1513 int nr;
1514 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
1515
1516 if (get_id) {
1517 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1518 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1519 get_id, /*data=*/NULL, needs_sort);
1520 if (!stat_config.aggr_map) {
1521 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1522 return -1;
1523 }
1524 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
1525 }
1526
1527 if (stat_config.aggr_mode == AGGR_THREAD) {
1528 nr = perf_thread_map__nr(evsel_list->core.threads);
1529 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1530 if (stat_config.aggr_map == NULL)
1531 return -ENOMEM;
1532
1533 for (int s = 0; s < nr; s++) {
1534 struct aggr_cpu_id id = aggr_cpu_id__empty();
1535
1536 id.thread_idx = s;
1537 stat_config.aggr_map->map[s] = id;
1538 }
1539 return 0;
1540 }
1541
1542 /*
1543 * The evsel_list->cpus is the base we operate on,
1544 * taking the highest cpu number to be the size of
1545 * the aggregation translate cpumap.
1546 */
1547 if (!perf_cpu_map__is_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))
1548 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
1549 else
1550 nr = 0;
1551 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1552 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1553}
1554
1555static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1556{
1557 free(map);
1558}
1559
1560static void perf_stat__exit_aggr_mode(void)
1561{
1562 cpu_aggr_map__delete(stat_config.aggr_map);
1563 cpu_aggr_map__delete(stat_config.cpus_aggr_map);
1564 stat_config.aggr_map = NULL;
1565 stat_config.cpus_aggr_map = NULL;
1566}
1567
1568static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
1569{
1570 struct perf_env *env = data;
1571 struct aggr_cpu_id id = aggr_cpu_id__empty();
1572
1573 if (cpu.cpu != -1)
1574 id.socket = env->cpu[cpu.cpu].socket_id;
1575
1576 return id;
1577}
1578
1579static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
1580{
1581 struct perf_env *env = data;
1582 struct aggr_cpu_id id = aggr_cpu_id__empty();
1583
1584 if (cpu.cpu != -1) {
1585 /*
1586 * die_id is relative to socket, so start
1587 * with the socket ID and then add die to
1588 * make a unique ID.
1589 */
1590 id.socket = env->cpu[cpu.cpu].socket_id;
1591 id.die = env->cpu[cpu.cpu].die_id;
1592 }
1593
1594 return id;
1595}
1596
1597static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env,
1598 u32 cache_level, struct aggr_cpu_id *id)
1599{
1600 int i;
1601 int caches_cnt = env->caches_cnt;
1602 struct cpu_cache_level *caches = env->caches;
1603
1604 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
1605 id->cache = -1;
1606
1607 if (!caches_cnt)
1608 return;
1609
1610 for (i = caches_cnt - 1; i > -1; --i) {
1611 struct perf_cpu_map *cpu_map;
1612 int map_contains_cpu;
1613
1614 /*
1615 * If user has not specified a level, find the fist level with
1616 * the cpu in the map. Since building the map is expensive, do
1617 * this only if levels match.
1618 */
1619 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level)
1620 continue;
1621
1622 cpu_map = perf_cpu_map__new(caches[i].map);
1623 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu);
1624 perf_cpu_map__put(cpu_map);
1625
1626 if (map_contains_cpu != -1) {
1627 id->cache_lvl = caches[i].level;
1628 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
1629 return;
1630 }
1631 }
1632}
1633
1634static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu,
1635 void *data)
1636{
1637 struct perf_env *env = data;
1638 struct aggr_cpu_id id = aggr_cpu_id__empty();
1639
1640 if (cpu.cpu != -1) {
1641 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level;
1642
1643 id.socket = env->cpu[cpu.cpu].socket_id;
1644 id.die = env->cpu[cpu.cpu].die_id;
1645 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id);
1646 }
1647
1648 return id;
1649}
1650
1651static struct aggr_cpu_id perf_env__get_cluster_aggr_by_cpu(struct perf_cpu cpu,
1652 void *data)
1653{
1654 struct perf_env *env = data;
1655 struct aggr_cpu_id id = aggr_cpu_id__empty();
1656
1657 if (cpu.cpu != -1) {
1658 id.socket = env->cpu[cpu.cpu].socket_id;
1659 id.die = env->cpu[cpu.cpu].die_id;
1660 id.cluster = env->cpu[cpu.cpu].cluster_id;
1661 }
1662
1663 return id;
1664}
1665
1666static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
1667{
1668 struct perf_env *env = data;
1669 struct aggr_cpu_id id = aggr_cpu_id__empty();
1670
1671 if (cpu.cpu != -1) {
1672 /*
1673 * core_id is relative to socket, die and cluster, we need a
1674 * global id. So we set socket, die id, cluster id and core id.
1675 */
1676 id.socket = env->cpu[cpu.cpu].socket_id;
1677 id.die = env->cpu[cpu.cpu].die_id;
1678 id.cluster = env->cpu[cpu.cpu].cluster_id;
1679 id.core = env->cpu[cpu.cpu].core_id;
1680 }
1681
1682 return id;
1683}
1684
1685static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
1686{
1687 struct perf_env *env = data;
1688 struct aggr_cpu_id id = aggr_cpu_id__empty();
1689
1690 if (cpu.cpu != -1) {
1691 /*
1692 * core_id is relative to socket and die,
1693 * we need a global id. So we set
1694 * socket, die id and core id
1695 */
1696 id.socket = env->cpu[cpu.cpu].socket_id;
1697 id.die = env->cpu[cpu.cpu].die_id;
1698 id.core = env->cpu[cpu.cpu].core_id;
1699 id.cpu = cpu;
1700 }
1701
1702 return id;
1703}
1704
1705static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
1706{
1707 struct aggr_cpu_id id = aggr_cpu_id__empty();
1708
1709 id.node = perf_env__numa_node(data, cpu);
1710 return id;
1711}
1712
1713static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
1714 void *data __maybe_unused)
1715{
1716 struct aggr_cpu_id id = aggr_cpu_id__empty();
1717
1718 /* it always aggregates to the cpu 0 */
1719 id.cpu = (struct perf_cpu){ .cpu = 0 };
1720 return id;
1721}
1722
1723static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1724 struct perf_cpu cpu)
1725{
1726 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1727}
1728static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1729 struct perf_cpu cpu)
1730{
1731 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1732}
1733
1734static struct aggr_cpu_id perf_stat__get_cluster_file(struct perf_stat_config *config __maybe_unused,
1735 struct perf_cpu cpu)
1736{
1737 return perf_env__get_cluster_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1738}
1739
1740static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused,
1741 struct perf_cpu cpu)
1742{
1743 return perf_env__get_cache_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1744}
1745
1746static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1747 struct perf_cpu cpu)
1748{
1749 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1750}
1751
1752static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
1753 struct perf_cpu cpu)
1754{
1755 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1756}
1757
1758static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1759 struct perf_cpu cpu)
1760{
1761 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1762}
1763
1764static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
1765 struct perf_cpu cpu)
1766{
1767 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
1768}
1769
1770static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
1771{
1772 switch (aggr_mode) {
1773 case AGGR_SOCKET:
1774 return perf_env__get_socket_aggr_by_cpu;
1775 case AGGR_DIE:
1776 return perf_env__get_die_aggr_by_cpu;
1777 case AGGR_CLUSTER:
1778 return perf_env__get_cluster_aggr_by_cpu;
1779 case AGGR_CACHE:
1780 return perf_env__get_cache_aggr_by_cpu;
1781 case AGGR_CORE:
1782 return perf_env__get_core_aggr_by_cpu;
1783 case AGGR_NODE:
1784 return perf_env__get_node_aggr_by_cpu;
1785 case AGGR_GLOBAL:
1786 return perf_env__get_global_aggr_by_cpu;
1787 case AGGR_NONE:
1788 return perf_env__get_cpu_aggr_by_cpu;
1789 case AGGR_THREAD:
1790 case AGGR_UNSET:
1791 case AGGR_MAX:
1792 default:
1793 return NULL;
1794 }
1795}
1796
1797static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
1798{
1799 switch (aggr_mode) {
1800 case AGGR_SOCKET:
1801 return perf_stat__get_socket_file;
1802 case AGGR_DIE:
1803 return perf_stat__get_die_file;
1804 case AGGR_CLUSTER:
1805 return perf_stat__get_cluster_file;
1806 case AGGR_CACHE:
1807 return perf_stat__get_cache_file;
1808 case AGGR_CORE:
1809 return perf_stat__get_core_file;
1810 case AGGR_NODE:
1811 return perf_stat__get_node_file;
1812 case AGGR_GLOBAL:
1813 return perf_stat__get_global_file;
1814 case AGGR_NONE:
1815 return perf_stat__get_cpu_file;
1816 case AGGR_THREAD:
1817 case AGGR_UNSET:
1818 case AGGR_MAX:
1819 default:
1820 return NULL;
1821 }
1822}
1823
1824static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1825{
1826 struct perf_env *env = &st->session->header.env;
1827 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
1828 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
1829
1830 if (stat_config.aggr_mode == AGGR_THREAD) {
1831 int nr = perf_thread_map__nr(evsel_list->core.threads);
1832
1833 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
1834 if (stat_config.aggr_map == NULL)
1835 return -ENOMEM;
1836
1837 for (int s = 0; s < nr; s++) {
1838 struct aggr_cpu_id id = aggr_cpu_id__empty();
1839
1840 id.thread_idx = s;
1841 stat_config.aggr_map->map[s] = id;
1842 }
1843 return 0;
1844 }
1845
1846 if (!get_id)
1847 return 0;
1848
1849 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
1850 get_id, env, needs_sort);
1851 if (!stat_config.aggr_map) {
1852 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
1853 return -1;
1854 }
1855 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
1856 return 0;
1857}
1858
1859/*
1860 * Add default events, if there were no attributes specified or
1861 * if -d/--detailed, -d -d or -d -d -d is used:
1862 */
1863static int add_default_events(void)
1864{
1865 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
1866 struct parse_events_error err;
1867 struct evlist *evlist = evlist__new();
1868 struct evsel *evsel;
1869 int ret = 0;
1870
1871 if (!evlist)
1872 return -ENOMEM;
1873
1874 parse_events_error__init(&err);
1875
1876 /* Set attrs if no event is selected and !null_run: */
1877 if (stat_config.null_run)
1878 goto out;
1879
1880 if (transaction_run) {
1881 /* Handle -T as -M transaction. Once platform specific metrics
1882 * support has been added to the json files, all architectures
1883 * will use this approach. To determine transaction support
1884 * on an architecture test for such a metric name.
1885 */
1886 if (!metricgroup__has_metric(pmu, "transaction")) {
1887 pr_err("Missing transaction metrics\n");
1888 ret = -1;
1889 goto out;
1890 }
1891 ret = metricgroup__parse_groups(evlist, pmu, "transaction",
1892 stat_config.metric_no_group,
1893 stat_config.metric_no_merge,
1894 stat_config.metric_no_threshold,
1895 stat_config.user_requested_cpu_list,
1896 stat_config.system_wide,
1897 stat_config.hardware_aware_grouping,
1898 &stat_config.metric_events);
1899 goto out;
1900 }
1901
1902 if (smi_cost) {
1903 int smi;
1904
1905 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1906 pr_err("freeze_on_smi is not supported.\n");
1907 ret = -1;
1908 goto out;
1909 }
1910
1911 if (!smi) {
1912 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1913 pr_err("Failed to set freeze_on_smi.\n");
1914 ret = -1;
1915 goto out;
1916 }
1917 smi_reset = true;
1918 }
1919
1920 if (!metricgroup__has_metric(pmu, "smi")) {
1921 pr_err("Missing smi metrics\n");
1922 ret = -1;
1923 goto out;
1924 }
1925
1926 if (!force_metric_only)
1927 stat_config.metric_only = true;
1928
1929 ret = metricgroup__parse_groups(evlist, pmu, "smi",
1930 stat_config.metric_no_group,
1931 stat_config.metric_no_merge,
1932 stat_config.metric_no_threshold,
1933 stat_config.user_requested_cpu_list,
1934 stat_config.system_wide,
1935 stat_config.hardware_aware_grouping,
1936 &stat_config.metric_events);
1937 goto out;
1938 }
1939
1940 if (topdown_run) {
1941 unsigned int max_level = metricgroups__topdown_max_level();
1942 char str[] = "TopdownL1";
1943
1944 if (!force_metric_only)
1945 stat_config.metric_only = true;
1946
1947 if (!max_level) {
1948 pr_err("Topdown requested but the topdown metric groups aren't present.\n"
1949 "(See perf list the metric groups have names like TopdownL1)\n");
1950 ret = -1;
1951 goto out;
1952 }
1953 if (stat_config.topdown_level > max_level) {
1954 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
1955 ret = -1;
1956 goto out;
1957 } else if (!stat_config.topdown_level) {
1958 stat_config.topdown_level = 1;
1959 }
1960 if (!stat_config.interval && !stat_config.metric_only) {
1961 fprintf(stat_config.output,
1962 "Topdown accuracy may decrease when measuring long periods.\n"
1963 "Please print the result regularly, e.g. -I1000\n");
1964 }
1965 str[8] = stat_config.topdown_level + '0';
1966 if (metricgroup__parse_groups(evlist,
1967 pmu, str,
1968 /*metric_no_group=*/false,
1969 /*metric_no_merge=*/false,
1970 /*metric_no_threshold=*/true,
1971 stat_config.user_requested_cpu_list,
1972 stat_config.system_wide,
1973 stat_config.hardware_aware_grouping,
1974 &stat_config.metric_events) < 0) {
1975 ret = -1;
1976 goto out;
1977 }
1978 }
1979
1980 if (!stat_config.topdown_level)
1981 stat_config.topdown_level = 1;
1982
1983 if (!evlist->core.nr_entries && !evsel_list->core.nr_entries) {
1984 /* No events so add defaults. */
1985 if (target__has_cpu(&target))
1986 ret = parse_events(evlist, "cpu-clock", &err);
1987 else
1988 ret = parse_events(evlist, "task-clock", &err);
1989 if (ret)
1990 goto out;
1991
1992 ret = parse_events(evlist,
1993 "context-switches,"
1994 "cpu-migrations,"
1995 "page-faults,"
1996 "instructions,"
1997 "cycles,"
1998 "stalled-cycles-frontend,"
1999 "stalled-cycles-backend,"
2000 "branches,"
2001 "branch-misses",
2002 &err);
2003 if (ret)
2004 goto out;
2005
2006 /*
2007 * Add TopdownL1 metrics if they exist. To minimize
2008 * multiplexing, don't request threshold computation.
2009 */
2010 if (metricgroup__has_metric(pmu, "Default")) {
2011 struct evlist *metric_evlist = evlist__new();
2012
2013 if (!metric_evlist) {
2014 ret = -ENOMEM;
2015 goto out;
2016 }
2017 if (metricgroup__parse_groups(metric_evlist, pmu, "Default",
2018 /*metric_no_group=*/false,
2019 /*metric_no_merge=*/false,
2020 /*metric_no_threshold=*/true,
2021 stat_config.user_requested_cpu_list,
2022 stat_config.system_wide,
2023 stat_config.hardware_aware_grouping,
2024 &stat_config.metric_events) < 0) {
2025 ret = -1;
2026 goto out;
2027 }
2028
2029 evlist__for_each_entry(metric_evlist, evsel)
2030 evsel->default_metricgroup = true;
2031
2032 evlist__splice_list_tail(evlist, &metric_evlist->core.entries);
2033 evlist__delete(metric_evlist);
2034 }
2035 }
2036
2037 /* Detailed events get appended to the event list: */
2038
2039 if (!ret && detailed_run >= 1) {
2040 /*
2041 * Detailed stats (-d), covering the L1 and last level data
2042 * caches:
2043 */
2044 ret = parse_events(evlist,
2045 "L1-dcache-loads,"
2046 "L1-dcache-load-misses,"
2047 "LLC-loads,"
2048 "LLC-load-misses",
2049 &err);
2050 }
2051 if (!ret && detailed_run >= 2) {
2052 /*
2053 * Very detailed stats (-d -d), covering the instruction cache
2054 * and the TLB caches:
2055 */
2056 ret = parse_events(evlist,
2057 "L1-icache-loads,"
2058 "L1-icache-load-misses,"
2059 "dTLB-loads,"
2060 "dTLB-load-misses,"
2061 "iTLB-loads,"
2062 "iTLB-load-misses",
2063 &err);
2064 }
2065 if (!ret && detailed_run >= 3) {
2066 /*
2067 * Very, very detailed stats (-d -d -d), adding prefetch events:
2068 */
2069 ret = parse_events(evlist,
2070 "L1-dcache-prefetches,"
2071 "L1-dcache-prefetch-misses",
2072 &err);
2073 }
2074out:
2075 if (!ret) {
2076 evlist__for_each_entry(evlist, evsel) {
2077 /*
2078 * Make at least one event non-skippable so fatal errors are visible.
2079 * 'cycles' always used to be default and non-skippable, so use that.
2080 */
2081 if (strcmp("cycles", evsel__name(evsel)))
2082 evsel->skippable = true;
2083 }
2084 }
2085 parse_events_error__exit(&err);
2086 evlist__splice_list_tail(evsel_list, &evlist->core.entries);
2087 evlist__delete(evlist);
2088 return ret;
2089}
2090
2091static const char * const stat_record_usage[] = {
2092 "perf stat record [<options>]",
2093 NULL,
2094};
2095
2096static void init_features(struct perf_session *session)
2097{
2098 int feat;
2099
2100 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
2101 perf_header__set_feat(&session->header, feat);
2102
2103 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
2104 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
2105 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
2106 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
2107 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
2108}
2109
2110static int __cmd_record(const struct option stat_options[], struct opt_aggr_mode *opt_mode,
2111 int argc, const char **argv)
2112{
2113 struct perf_session *session;
2114 struct perf_data *data = &perf_stat.data;
2115
2116 argc = parse_options(argc, argv, stat_options, stat_record_usage,
2117 PARSE_OPT_STOP_AT_NON_OPTION);
2118 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(opt_mode);
2119
2120 if (output_name)
2121 data->path = output_name;
2122
2123 if (stat_config.run_count != 1 || forever) {
2124 pr_err("Cannot use -r option with perf stat record.\n");
2125 return -1;
2126 }
2127
2128 session = perf_session__new(data, NULL);
2129 if (IS_ERR(session)) {
2130 pr_err("Perf session creation failed\n");
2131 return PTR_ERR(session);
2132 }
2133
2134 init_features(session);
2135
2136 session->evlist = evsel_list;
2137 perf_stat.session = session;
2138 perf_stat.record = true;
2139 return argc;
2140}
2141
2142static int process_stat_round_event(struct perf_session *session,
2143 union perf_event *event)
2144{
2145 struct perf_record_stat_round *stat_round = &event->stat_round;
2146 struct timespec tsh, *ts = NULL;
2147 const char **argv = session->header.env.cmdline_argv;
2148 int argc = session->header.env.nr_cmdline;
2149
2150 process_counters();
2151
2152 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2153 update_stats(&walltime_nsecs_stats, stat_round->time);
2154
2155 if (stat_config.interval && stat_round->time) {
2156 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
2157 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2158 ts = &tsh;
2159 }
2160
2161 print_counters(ts, argc, argv);
2162 return 0;
2163}
2164
2165static
2166int process_stat_config_event(struct perf_session *session,
2167 union perf_event *event)
2168{
2169 const struct perf_tool *tool = session->tool;
2170 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2171
2172 perf_event__read_stat_config(&stat_config, &event->stat_config);
2173
2174 if (perf_cpu_map__is_empty(st->cpus)) {
2175 if (st->aggr_mode != AGGR_UNSET)
2176 pr_warning("warning: processing task data, aggregation mode not set\n");
2177 } else if (st->aggr_mode != AGGR_UNSET) {
2178 stat_config.aggr_mode = st->aggr_mode;
2179 }
2180
2181 if (perf_stat.data.is_pipe)
2182 perf_stat_init_aggr_mode();
2183 else
2184 perf_stat_init_aggr_mode_file(st);
2185
2186 if (stat_config.aggr_map) {
2187 int nr_aggr = stat_config.aggr_map->nr;
2188
2189 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
2190 pr_err("cannot allocate aggr counts\n");
2191 return -1;
2192 }
2193 }
2194 return 0;
2195}
2196
2197static int set_maps(struct perf_stat *st)
2198{
2199 if (!st->cpus || !st->threads)
2200 return 0;
2201
2202 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2203 return -EINVAL;
2204
2205 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2206
2207 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))
2208 return -ENOMEM;
2209
2210 st->maps_allocated = true;
2211 return 0;
2212}
2213
2214static
2215int process_thread_map_event(struct perf_session *session,
2216 union perf_event *event)
2217{
2218 const struct perf_tool *tool = session->tool;
2219 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2220
2221 if (st->threads) {
2222 pr_warning("Extra thread map event, ignoring.\n");
2223 return 0;
2224 }
2225
2226 st->threads = thread_map__new_event(&event->thread_map);
2227 if (!st->threads)
2228 return -ENOMEM;
2229
2230 return set_maps(st);
2231}
2232
2233static
2234int process_cpu_map_event(struct perf_session *session,
2235 union perf_event *event)
2236{
2237 const struct perf_tool *tool = session->tool;
2238 struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2239 struct perf_cpu_map *cpus;
2240
2241 if (st->cpus) {
2242 pr_warning("Extra cpu map event, ignoring.\n");
2243 return 0;
2244 }
2245
2246 cpus = cpu_map__new_data(&event->cpu_map.data);
2247 if (!cpus)
2248 return -ENOMEM;
2249
2250 st->cpus = cpus;
2251 return set_maps(st);
2252}
2253
2254static const char * const stat_report_usage[] = {
2255 "perf stat report [<options>]",
2256 NULL,
2257};
2258
2259static struct perf_stat perf_stat = {
2260 .aggr_mode = AGGR_UNSET,
2261 .aggr_level = 0,
2262};
2263
2264static int __cmd_report(int argc, const char **argv)
2265{
2266 struct perf_session *session;
2267 const struct option options[] = {
2268 OPT_STRING('i', "input", &input_name, "file", "input file name"),
2269 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2270 "aggregate counts per processor socket", AGGR_SOCKET),
2271 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2272 "aggregate counts per processor die", AGGR_DIE),
2273 OPT_SET_UINT(0, "per-cluster", &perf_stat.aggr_mode,
2274 "aggregate counts perf processor cluster", AGGR_CLUSTER),
2275 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level,
2276 "cache level",
2277 "aggregate count at this cache level (Default: LLC)",
2278 parse_cache_level),
2279 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2280 "aggregate counts per physical processor core", AGGR_CORE),
2281 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2282 "aggregate counts per numa node", AGGR_NODE),
2283 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2284 "disable CPU count aggregation", AGGR_NONE),
2285 OPT_END()
2286 };
2287 struct stat st;
2288 int ret;
2289
2290 argc = parse_options(argc, argv, options, stat_report_usage, 0);
2291
2292 if (!input_name || !strlen(input_name)) {
2293 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2294 input_name = "-";
2295 else
2296 input_name = "perf.data";
2297 }
2298
2299 perf_stat.data.path = input_name;
2300 perf_stat.data.mode = PERF_DATA_MODE_READ;
2301
2302 perf_tool__init(&perf_stat.tool, /*ordered_events=*/false);
2303 perf_stat.tool.attr = perf_event__process_attr;
2304 perf_stat.tool.event_update = perf_event__process_event_update;
2305 perf_stat.tool.thread_map = process_thread_map_event;
2306 perf_stat.tool.cpu_map = process_cpu_map_event;
2307 perf_stat.tool.stat_config = process_stat_config_event;
2308 perf_stat.tool.stat = perf_event__process_stat_event;
2309 perf_stat.tool.stat_round = process_stat_round_event;
2310
2311 session = perf_session__new(&perf_stat.data, &perf_stat.tool);
2312 if (IS_ERR(session))
2313 return PTR_ERR(session);
2314
2315 perf_stat.session = session;
2316 stat_config.output = stderr;
2317 evlist__delete(evsel_list);
2318 evsel_list = session->evlist;
2319
2320 ret = perf_session__process_events(session);
2321 if (ret)
2322 return ret;
2323
2324 perf_session__delete(session);
2325 return 0;
2326}
2327
2328static void setup_system_wide(int forks)
2329{
2330 /*
2331 * Make system wide (-a) the default target if
2332 * no target was specified and one of following
2333 * conditions is met:
2334 *
2335 * - there's no workload specified
2336 * - there is workload specified but all requested
2337 * events are system wide events
2338 */
2339 if (!target__none(&target))
2340 return;
2341
2342 if (!forks)
2343 target.system_wide = true;
2344 else {
2345 struct evsel *counter;
2346
2347 evlist__for_each_entry(evsel_list, counter) {
2348 if (!counter->core.requires_cpu &&
2349 !evsel__name_is(counter, "duration_time")) {
2350 return;
2351 }
2352 }
2353
2354 if (evsel_list->core.nr_entries)
2355 target.system_wide = true;
2356 }
2357}
2358
2359int cmd_stat(int argc, const char **argv)
2360{
2361 struct opt_aggr_mode opt_mode = {};
2362 struct option stat_options[] = {
2363 OPT_BOOLEAN('T', "transaction", &transaction_run,
2364 "hardware transaction statistics"),
2365 OPT_CALLBACK('e', "event", &parse_events_option_args, "event",
2366 "event selector. use 'perf list' to list available events",
2367 parse_events_option),
2368 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
2369 "event filter", parse_filter),
2370 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
2371 "child tasks do not inherit counters"),
2372 OPT_STRING('p', "pid", &target.pid, "pid",
2373 "stat events on existing process id"),
2374 OPT_STRING('t', "tid", &target.tid, "tid",
2375 "stat events on existing thread id"),
2376#ifdef HAVE_BPF_SKEL
2377 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
2378 "stat events on existing bpf program id"),
2379 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
2380 "use bpf program to count events"),
2381 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
2382 "path to perf_event_attr map"),
2383#endif
2384 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
2385 "system-wide collection from all CPUs"),
2386 OPT_BOOLEAN(0, "scale", &stat_config.scale,
2387 "Use --no-scale to disable counter scaling for multiplexing"),
2388 OPT_INCR('v', "verbose", &verbose,
2389 "be more verbose (show counter open errors, etc)"),
2390 OPT_INTEGER('r', "repeat", &stat_config.run_count,
2391 "repeat command and print average + stddev (max: 100, forever: 0)"),
2392 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
2393 "display details about each run (only with -r option)"),
2394 OPT_BOOLEAN('n', "null", &stat_config.null_run,
2395 "null run - dont start any counters"),
2396 OPT_INCR('d', "detailed", &detailed_run,
2397 "detailed run - start a lot of events"),
2398 OPT_BOOLEAN('S', "sync", &sync_run,
2399 "call sync() before starting a run"),
2400 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
2401 "print large numbers with thousands\' separators",
2402 stat__set_big_num),
2403 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
2404 "list of cpus to monitor in system-wide"),
2405 OPT_BOOLEAN('A', "no-aggr", &opt_mode.no_aggr,
2406 "disable aggregation across CPUs or PMUs"),
2407 OPT_BOOLEAN(0, "no-merge", &opt_mode.no_aggr,
2408 "disable aggregation the same as -A or -no-aggr"),
2409 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
2410 "Merge identical named hybrid events"),
2411 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
2412 "print counts with custom separator"),
2413 OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
2414 "print counts in JSON format"),
2415 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
2416 "monitor event in cgroup name only", parse_stat_cgroups),
2417 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
2418 "expand events for each cgroup"),
2419 OPT_STRING('o', "output", &output_name, "file", "output file name"),
2420 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
2421 OPT_INTEGER(0, "log-fd", &output_fd,
2422 "log output to fd, instead of stderr"),
2423 OPT_STRING(0, "pre", &pre_cmd, "command",
2424 "command to run prior to the measured command"),
2425 OPT_STRING(0, "post", &post_cmd, "command",
2426 "command to run after to the measured command"),
2427 OPT_UINTEGER('I', "interval-print", &stat_config.interval,
2428 "print counts at regular interval in ms "
2429 "(overhead is possible for values <= 100ms)"),
2430 OPT_INTEGER(0, "interval-count", &stat_config.times,
2431 "print counts for fixed number of times"),
2432 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
2433 "clear screen in between new interval"),
2434 OPT_UINTEGER(0, "timeout", &stat_config.timeout,
2435 "stop workload and print counts after a timeout period in ms (>= 10ms)"),
2436 OPT_BOOLEAN(0, "per-socket", &opt_mode.socket,
2437 "aggregate counts per processor socket"),
2438 OPT_BOOLEAN(0, "per-die", &opt_mode.die, "aggregate counts per processor die"),
2439 OPT_BOOLEAN(0, "per-cluster", &opt_mode.cluster,
2440 "aggregate counts per processor cluster"),
2441 OPT_CALLBACK_OPTARG(0, "per-cache", &opt_mode, &stat_config.aggr_level,
2442 "cache level", "aggregate count at this cache level (Default: LLC)",
2443 parse_cache_level),
2444 OPT_BOOLEAN(0, "per-core", &opt_mode.core,
2445 "aggregate counts per physical processor core"),
2446 OPT_BOOLEAN(0, "per-thread", &opt_mode.thread, "aggregate counts per thread"),
2447 OPT_BOOLEAN(0, "per-node", &opt_mode.node, "aggregate counts per numa node"),
2448 OPT_INTEGER('D', "delay", &target.initial_delay,
2449 "ms to wait before starting measurement after program start (-1: start with events disabled)"),
2450 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
2451 "Only print computed metrics. No raw values", enable_metric_only),
2452 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
2453 "don't group metric events, impacts multiplexing"),
2454 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
2455 "don't try to share events between metrics in a group"),
2456 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,
2457 "disable adding events for the metric threshold calculation"),
2458 OPT_BOOLEAN(0, "topdown", &topdown_run,
2459 "measure top-down statistics"),
2460#ifdef HAVE_ARCH_X86_64_SUPPORT
2461 OPT_BOOLEAN(0, "record-tpebs", &tpebs_recording,
2462 "enable recording for tpebs when retire_latency required"),
2463#endif
2464 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
2465 "Set the metrics level for the top-down statistics (0: max level)"),
2466 OPT_BOOLEAN(0, "smi-cost", &smi_cost,
2467 "measure SMI cost"),
2468 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
2469 "monitor specified metrics or metric groups (separated by ,)",
2470 append_metric_groups),
2471 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
2472 "Configure all used events to run in kernel space.",
2473 PARSE_OPT_EXCLUSIVE),
2474 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
2475 "Configure all used events to run in user space.",
2476 PARSE_OPT_EXCLUSIVE),
2477 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
2478 "Use with 'percore' event qualifier to show the event "
2479 "counts of one hardware thread by sum up total hardware "
2480 "threads of same physical core"),
2481 OPT_BOOLEAN(0, "summary", &stat_config.summary,
2482 "print summary for interval mode"),
2483 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
2484 "don't print 'summary' for CSV summary output"),
2485 OPT_BOOLEAN(0, "quiet", &quiet,
2486 "don't print any output, messages or warnings (useful with record)"),
2487 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
2488 "Only enable events on applying cpu with this type "
2489 "for hybrid platform (e.g. core or atom)",
2490 parse_cputype),
2491#ifdef HAVE_LIBPFM
2492 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
2493 "libpfm4 event selector. use 'perf list' to list available events",
2494 parse_libpfm_events_option),
2495#endif
2496 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
2497 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
2498 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
2499 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
2500 parse_control_option),
2501 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
2502 "measure I/O performance metrics provided by arch/platform",
2503 iostat_parse),
2504 OPT_END()
2505 };
2506 const char * const stat_usage[] = {
2507 "perf stat [<options>] [<command>]",
2508 NULL
2509 };
2510 int status = -EINVAL, run_idx, err;
2511 const char *mode;
2512 FILE *output = stderr;
2513 unsigned int interval, timeout;
2514 const char * const stat_subcommands[] = { "record", "report" };
2515 char errbuf[BUFSIZ];
2516
2517 setlocale(LC_ALL, "");
2518
2519 evsel_list = evlist__new();
2520 if (evsel_list == NULL)
2521 return -ENOMEM;
2522
2523 parse_events__shrink_config_terms();
2524
2525 /* String-parsing callback-based options would segfault when negated */
2526 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2527 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2528 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2529
2530 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2531 (const char **) stat_usage,
2532 PARSE_OPT_STOP_AT_NON_OPTION);
2533
2534 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(&opt_mode);
2535
2536 if (stat_config.csv_sep) {
2537 stat_config.csv_output = true;
2538 if (!strcmp(stat_config.csv_sep, "\\t"))
2539 stat_config.csv_sep = "\t";
2540 } else
2541 stat_config.csv_sep = DEFAULT_SEPARATOR;
2542
2543 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
2544 argc = __cmd_record(stat_options, &opt_mode, argc, argv);
2545 if (argc < 0)
2546 return -1;
2547 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
2548 return __cmd_report(argc, argv);
2549
2550 interval = stat_config.interval;
2551 timeout = stat_config.timeout;
2552
2553 /*
2554 * For record command the -o is already taken care of.
2555 */
2556 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2557 output = NULL;
2558
2559 if (output_name && output_fd) {
2560 fprintf(stderr, "cannot use both --output and --log-fd\n");
2561 parse_options_usage(stat_usage, stat_options, "o", 1);
2562 parse_options_usage(NULL, stat_options, "log-fd", 0);
2563 goto out;
2564 }
2565
2566 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2567 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2568 goto out;
2569 }
2570
2571 if (stat_config.metric_only && stat_config.run_count > 1) {
2572 fprintf(stderr, "--metric-only is not supported with -r\n");
2573 goto out;
2574 }
2575
2576 if (stat_config.csv_output || (stat_config.metric_only && stat_config.json_output)) {
2577 /*
2578 * Current CSV and metric-only JSON output doesn't display the
2579 * metric threshold so don't compute it.
2580 */
2581 stat_config.metric_no_threshold = true;
2582 }
2583
2584 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2585 fprintf(stderr, "--table is only supported with -r\n");
2586 parse_options_usage(stat_usage, stat_options, "r", 1);
2587 parse_options_usage(NULL, stat_options, "table", 0);
2588 goto out;
2589 }
2590
2591 if (output_fd < 0) {
2592 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2593 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2594 goto out;
2595 }
2596
2597 if (!output && !quiet) {
2598 struct timespec tm;
2599 mode = append_file ? "a" : "w";
2600
2601 output = fopen(output_name, mode);
2602 if (!output) {
2603 perror("failed to create output file");
2604 return -1;
2605 }
2606 if (!stat_config.json_output) {
2607 clock_gettime(CLOCK_REALTIME, &tm);
2608 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2609 }
2610 } else if (output_fd > 0) {
2611 mode = append_file ? "a" : "w";
2612 output = fdopen(output_fd, mode);
2613 if (!output) {
2614 perror("Failed opening logfd");
2615 return -errno;
2616 }
2617 }
2618
2619 if (stat_config.interval_clear && !isatty(fileno(output))) {
2620 fprintf(stderr, "--interval-clear does not work with output\n");
2621 parse_options_usage(stat_usage, stat_options, "o", 1);
2622 parse_options_usage(NULL, stat_options, "log-fd", 0);
2623 parse_options_usage(NULL, stat_options, "interval-clear", 0);
2624 return -1;
2625 }
2626
2627 stat_config.output = output;
2628
2629 /*
2630 * let the spreadsheet do the pretty-printing
2631 */
2632 if (stat_config.csv_output) {
2633 /* User explicitly passed -B? */
2634 if (big_num_opt == 1) {
2635 fprintf(stderr, "-B option not supported with -x\n");
2636 parse_options_usage(stat_usage, stat_options, "B", 1);
2637 parse_options_usage(NULL, stat_options, "x", 1);
2638 goto out;
2639 } else /* Nope, so disable big number formatting */
2640 stat_config.big_num = false;
2641 } else if (big_num_opt == 0) /* User passed --no-big-num */
2642 stat_config.big_num = false;
2643
2644 target.inherit = !stat_config.no_inherit;
2645 err = target__validate(&target);
2646 if (err) {
2647 target__strerror(&target, err, errbuf, BUFSIZ);
2648 pr_warning("%s\n", errbuf);
2649 }
2650
2651 setup_system_wide(argc);
2652
2653 /*
2654 * Display user/system times only for single
2655 * run and when there's specified tracee.
2656 */
2657 if ((stat_config.run_count == 1) && target__none(&target))
2658 stat_config.ru_display = true;
2659
2660 if (stat_config.run_count < 0) {
2661 pr_err("Run count must be a positive number\n");
2662 parse_options_usage(stat_usage, stat_options, "r", 1);
2663 goto out;
2664 } else if (stat_config.run_count == 0) {
2665 forever = true;
2666 stat_config.run_count = 1;
2667 }
2668
2669 if (stat_config.walltime_run_table) {
2670 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2671 if (!stat_config.walltime_run) {
2672 pr_err("failed to setup -r option");
2673 goto out;
2674 }
2675 }
2676
2677 if ((stat_config.aggr_mode == AGGR_THREAD) &&
2678 !target__has_task(&target)) {
2679 if (!target.system_wide || target.cpu_list) {
2680 fprintf(stderr, "The --per-thread option is only "
2681 "available when monitoring via -p -t -a "
2682 "options or only --per-thread.\n");
2683 parse_options_usage(NULL, stat_options, "p", 1);
2684 parse_options_usage(NULL, stat_options, "t", 1);
2685 goto out;
2686 }
2687 }
2688
2689 /*
2690 * no_aggr, cgroup are for system-wide only
2691 * --per-thread is aggregated per thread, we dont mix it with cpu mode
2692 */
2693 if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2694 stat_config.aggr_mode != AGGR_THREAD) ||
2695 (nr_cgroups || stat_config.cgroup_list)) &&
2696 !target__has_cpu(&target)) {
2697 fprintf(stderr, "both cgroup and no-aggregation "
2698 "modes only available in system-wide mode\n");
2699
2700 parse_options_usage(stat_usage, stat_options, "G", 1);
2701 parse_options_usage(NULL, stat_options, "A", 1);
2702 parse_options_usage(NULL, stat_options, "a", 1);
2703 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2704 goto out;
2705 }
2706
2707 if (stat_config.iostat_run) {
2708 status = iostat_prepare(evsel_list, &stat_config);
2709 if (status)
2710 goto out;
2711 if (iostat_mode == IOSTAT_LIST) {
2712 iostat_list(evsel_list, &stat_config);
2713 goto out;
2714 } else if (verbose > 0)
2715 iostat_list(evsel_list, &stat_config);
2716 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
2717 target.system_wide = true;
2718 }
2719
2720 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2721 target.per_thread = true;
2722
2723 stat_config.system_wide = target.system_wide;
2724 if (target.cpu_list) {
2725 stat_config.user_requested_cpu_list = strdup(target.cpu_list);
2726 if (!stat_config.user_requested_cpu_list) {
2727 status = -ENOMEM;
2728 goto out;
2729 }
2730 }
2731
2732 /*
2733 * Metric parsing needs to be delayed as metrics may optimize events
2734 * knowing the target is system-wide.
2735 */
2736 if (metrics) {
2737 const char *pmu = parse_events_option_args.pmu_filter ?: "all";
2738 int ret = metricgroup__parse_groups(evsel_list, pmu, metrics,
2739 stat_config.metric_no_group,
2740 stat_config.metric_no_merge,
2741 stat_config.metric_no_threshold,
2742 stat_config.user_requested_cpu_list,
2743 stat_config.system_wide,
2744 stat_config.hardware_aware_grouping,
2745 &stat_config.metric_events);
2746
2747 zfree(&metrics);
2748 if (ret) {
2749 status = ret;
2750 goto out;
2751 }
2752 }
2753
2754 if (add_default_events())
2755 goto out;
2756
2757 if (stat_config.cgroup_list) {
2758 if (nr_cgroups > 0) {
2759 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2760 parse_options_usage(stat_usage, stat_options, "G", 1);
2761 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2762 goto out;
2763 }
2764
2765 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2766 &stat_config.metric_events, true) < 0) {
2767 parse_options_usage(stat_usage, stat_options,
2768 "for-each-cgroup", 0);
2769 goto out;
2770 }
2771 }
2772
2773 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list);
2774
2775 if (evlist__create_maps(evsel_list, &target) < 0) {
2776 if (target__has_task(&target)) {
2777 pr_err("Problems finding threads of monitor\n");
2778 parse_options_usage(stat_usage, stat_options, "p", 1);
2779 parse_options_usage(NULL, stat_options, "t", 1);
2780 } else if (target__has_cpu(&target)) {
2781 perror("failed to parse CPUs map");
2782 parse_options_usage(stat_usage, stat_options, "C", 1);
2783 parse_options_usage(NULL, stat_options, "a", 1);
2784 }
2785 goto out;
2786 }
2787
2788 evlist__check_cpu_maps(evsel_list);
2789
2790 /*
2791 * Initialize thread_map with comm names,
2792 * so we could print it out on output.
2793 */
2794 if (stat_config.aggr_mode == AGGR_THREAD) {
2795 thread_map__read_comms(evsel_list->core.threads);
2796 }
2797
2798 if (stat_config.aggr_mode == AGGR_NODE)
2799 cpu__setup_cpunode_map();
2800
2801 if (stat_config.times && interval)
2802 interval_count = true;
2803 else if (stat_config.times && !interval) {
2804 pr_err("interval-count option should be used together with "
2805 "interval-print.\n");
2806 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2807 parse_options_usage(stat_usage, stat_options, "I", 1);
2808 goto out;
2809 }
2810
2811 if (timeout && timeout < 100) {
2812 if (timeout < 10) {
2813 pr_err("timeout must be >= 10ms.\n");
2814 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2815 goto out;
2816 } else
2817 pr_warning("timeout < 100ms. "
2818 "The overhead percentage could be high in some cases. "
2819 "Please proceed with caution.\n");
2820 }
2821 if (timeout && interval) {
2822 pr_err("timeout option is not supported with interval-print.\n");
2823 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2824 parse_options_usage(stat_usage, stat_options, "I", 1);
2825 goto out;
2826 }
2827
2828 if (perf_stat_init_aggr_mode())
2829 goto out;
2830
2831 if (evlist__alloc_stats(&stat_config, evsel_list, interval))
2832 goto out;
2833
2834 /*
2835 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2836 * while avoiding that older tools show confusing messages.
2837 *
2838 * However for pipe sessions we need to keep it zero,
2839 * because script's perf_evsel__check_attr is triggered
2840 * by attr->sample_type != 0, and we can't run it on
2841 * stat sessions.
2842 */
2843 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2844
2845 /*
2846 * We dont want to block the signals - that would cause
2847 * child tasks to inherit that and Ctrl-C would not work.
2848 * What we want is for Ctrl-C to work in the exec()-ed
2849 * task, but being ignored by perf stat itself:
2850 */
2851 atexit(sig_atexit);
2852 if (!forever)
2853 signal(SIGINT, skip_signal);
2854 signal(SIGCHLD, skip_signal);
2855 signal(SIGALRM, skip_signal);
2856 signal(SIGABRT, skip_signal);
2857
2858 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2859 goto out;
2860
2861 /* Enable ignoring missing threads when -p option is defined. */
2862 evlist__first(evsel_list)->ignore_missing_thread = target.pid;
2863 status = 0;
2864 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2865 if (stat_config.run_count != 1 && verbose > 0)
2866 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2867 run_idx + 1);
2868
2869 if (run_idx != 0)
2870 evlist__reset_prev_raw_counts(evsel_list);
2871
2872 status = run_perf_stat(argc, argv, run_idx);
2873 if (status == -1)
2874 break;
2875
2876 if (forever && !interval) {
2877 print_counters(NULL, argc, argv);
2878 perf_stat__reset_stats();
2879 }
2880 }
2881
2882 if (!forever && status != -1 && (!interval || stat_config.summary)) {
2883 if (stat_config.run_count > 1)
2884 evlist__copy_res_stats(&stat_config, evsel_list);
2885 print_counters(NULL, argc, argv);
2886 }
2887
2888 evlist__finalize_ctlfd(evsel_list);
2889
2890 if (STAT_RECORD) {
2891 /*
2892 * We synthesize the kernel mmap record just so that older tools
2893 * don't emit warnings about not being able to resolve symbols
2894 * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2895 * a saner message about no samples being in the perf.data file.
2896 *
2897 * This also serves to suppress a warning about f_header.data.size == 0
2898 * in header.c at the moment 'perf stat record' gets introduced, which
2899 * is not really needed once we start adding the stat specific PERF_RECORD_
2900 * records, but the need to suppress the kptr_restrict messages in older
2901 * tools remain -acme
2902 */
2903 int fd = perf_data__fd(&perf_stat.data);
2904
2905 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2906 process_synthesized_event,
2907 &perf_stat.session->machines.host);
2908 if (err) {
2909 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2910 "older tools may produce warnings about this file\n.");
2911 }
2912
2913 if (!interval) {
2914 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2915 pr_err("failed to write stat round event\n");
2916 }
2917
2918 if (!perf_stat.data.is_pipe) {
2919 perf_stat.session->header.data_size += perf_stat.bytes_written;
2920 perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2921 }
2922
2923 evlist__close(evsel_list);
2924 perf_session__delete(perf_stat.session);
2925 }
2926
2927 perf_stat__exit_aggr_mode();
2928 evlist__free_stats(evsel_list);
2929out:
2930 if (stat_config.iostat_run)
2931 iostat_release(evsel_list);
2932
2933 zfree(&stat_config.walltime_run);
2934 zfree(&stat_config.user_requested_cpu_list);
2935
2936 if (smi_cost && smi_reset)
2937 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2938
2939 evlist__delete(evsel_list);
2940
2941 metricgroup__rblist_exit(&stat_config.metric_events);
2942 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2943
2944 return status;
2945}