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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-bionic-kernel.git] / tools / perf / builtin-stat.c
1 /*
2 * builtin-stat.c
3 *
4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
6 *
7 * Sample output:
8
9 $ perf stat ./hackbench 10
10
11 Time: 0.118
12
13 Performance counter stats for './hackbench 10':
14
15 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
26
27 0.154822978 seconds time elapsed
28
29 *
30 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
31 *
32 * Improvements and fixes by:
33 *
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
39 * Jaswinder Singh Rajput <jaswinder@kernel.org>
40 *
41 * Released under the GPL v2. (and only v2, not any later version)
42 */
43
44 #include "perf.h"
45 #include "builtin.h"
46 #include "util/cgroup.h"
47 #include "util/util.h"
48 #include "util/parse-options.h"
49 #include "util/parse-events.h"
50 #include "util/pmu.h"
51 #include "util/event.h"
52 #include "util/evlist.h"
53 #include "util/evsel.h"
54 #include "util/debug.h"
55 #include "util/color.h"
56 #include "util/stat.h"
57 #include "util/header.h"
58 #include "util/cpumap.h"
59 #include "util/thread.h"
60 #include "util/thread_map.h"
61
62 #include <stdlib.h>
63 #include <sys/prctl.h>
64 #include <locale.h>
65
66 #define DEFAULT_SEPARATOR " "
67 #define CNTR_NOT_SUPPORTED "<not supported>"
68 #define CNTR_NOT_COUNTED "<not counted>"
69
70 static void print_stat(int argc, const char **argv);
71 static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
72 static void print_counter(struct perf_evsel *counter, char *prefix);
73 static void print_aggr(char *prefix);
74
75 /* Default events used for perf stat -T */
76 static const char * const transaction_attrs[] = {
77 "task-clock",
78 "{"
79 "instructions,"
80 "cycles,"
81 "cpu/cycles-t/,"
82 "cpu/tx-start/,"
83 "cpu/el-start/,"
84 "cpu/cycles-ct/"
85 "}"
86 };
87
88 /* More limited version when the CPU does not have all events. */
89 static const char * const transaction_limited_attrs[] = {
90 "task-clock",
91 "{"
92 "instructions,"
93 "cycles,"
94 "cpu/cycles-t/,"
95 "cpu/tx-start/"
96 "}"
97 };
98
99 /* must match transaction_attrs and the beginning limited_attrs */
100 enum {
101 T_TASK_CLOCK,
102 T_INSTRUCTIONS,
103 T_CYCLES,
104 T_CYCLES_IN_TX,
105 T_TRANSACTION_START,
106 T_ELISION_START,
107 T_CYCLES_IN_TX_CP,
108 };
109
110 static struct perf_evlist *evsel_list;
111
112 static struct target target = {
113 .uid = UINT_MAX,
114 };
115
116 enum aggr_mode {
117 AGGR_NONE,
118 AGGR_GLOBAL,
119 AGGR_SOCKET,
120 AGGR_CORE,
121 };
122
123 static int run_count = 1;
124 static bool no_inherit = false;
125 static bool scale = true;
126 static enum aggr_mode aggr_mode = AGGR_GLOBAL;
127 static volatile pid_t child_pid = -1;
128 static bool null_run = false;
129 static int detailed_run = 0;
130 static bool transaction_run;
131 static bool big_num = true;
132 static int big_num_opt = -1;
133 static const char *csv_sep = NULL;
134 static bool csv_output = false;
135 static bool group = false;
136 static FILE *output = NULL;
137 static const char *pre_cmd = NULL;
138 static const char *post_cmd = NULL;
139 static bool sync_run = false;
140 static unsigned int interval = 0;
141 static unsigned int initial_delay = 0;
142 static unsigned int unit_width = 4; /* strlen("unit") */
143 static bool forever = false;
144 static struct timespec ref_time;
145 static struct cpu_map *aggr_map;
146 static int (*aggr_get_id)(struct cpu_map *m, int cpu);
147
148 static volatile int done = 0;
149
150 struct perf_stat {
151 struct stats res_stats[3];
152 };
153
154 static inline void diff_timespec(struct timespec *r, struct timespec *a,
155 struct timespec *b)
156 {
157 r->tv_sec = a->tv_sec - b->tv_sec;
158 if (a->tv_nsec < b->tv_nsec) {
159 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
160 r->tv_sec--;
161 } else {
162 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
163 }
164 }
165
166 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
167 {
168 return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
169 }
170
171 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
172 {
173 return perf_evsel__cpus(evsel)->nr;
174 }
175
176 static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
177 {
178 int i;
179 struct perf_stat *ps = evsel->priv;
180
181 for (i = 0; i < 3; i++)
182 init_stats(&ps->res_stats[i]);
183 }
184
185 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
186 {
187 evsel->priv = zalloc(sizeof(struct perf_stat));
188 if (evsel->priv == NULL)
189 return -ENOMEM;
190 perf_evsel__reset_stat_priv(evsel);
191 return 0;
192 }
193
194 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
195 {
196 zfree(&evsel->priv);
197 }
198
199 static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
200 {
201 void *addr;
202 size_t sz;
203
204 sz = sizeof(*evsel->counts) +
205 (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
206
207 addr = zalloc(sz);
208 if (!addr)
209 return -ENOMEM;
210
211 evsel->prev_raw_counts = addr;
212
213 return 0;
214 }
215
216 static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
217 {
218 zfree(&evsel->prev_raw_counts);
219 }
220
221 static void perf_evlist__free_stats(struct perf_evlist *evlist)
222 {
223 struct perf_evsel *evsel;
224
225 evlist__for_each(evlist, evsel) {
226 perf_evsel__free_stat_priv(evsel);
227 perf_evsel__free_counts(evsel);
228 perf_evsel__free_prev_raw_counts(evsel);
229 }
230 }
231
232 static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
233 {
234 struct perf_evsel *evsel;
235
236 evlist__for_each(evlist, evsel) {
237 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
238 perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
239 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
240 goto out_free;
241 }
242
243 return 0;
244
245 out_free:
246 perf_evlist__free_stats(evlist);
247 return -1;
248 }
249
250 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
251 static struct stats runtime_cycles_stats[MAX_NR_CPUS];
252 static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
253 static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
254 static struct stats runtime_branches_stats[MAX_NR_CPUS];
255 static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
256 static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
257 static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
258 static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
259 static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
260 static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
261 static struct stats runtime_cycles_in_tx_stats[MAX_NR_CPUS];
262 static struct stats walltime_nsecs_stats;
263 static struct stats runtime_transaction_stats[MAX_NR_CPUS];
264 static struct stats runtime_elision_stats[MAX_NR_CPUS];
265
266 static void perf_stat__reset_stats(struct perf_evlist *evlist)
267 {
268 struct perf_evsel *evsel;
269
270 evlist__for_each(evlist, evsel) {
271 perf_evsel__reset_stat_priv(evsel);
272 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
273 }
274
275 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
276 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
277 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
278 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
279 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
280 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
281 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
282 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
283 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
284 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
285 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
286 memset(runtime_cycles_in_tx_stats, 0,
287 sizeof(runtime_cycles_in_tx_stats));
288 memset(runtime_transaction_stats, 0,
289 sizeof(runtime_transaction_stats));
290 memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
291 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
292 }
293
294 static int create_perf_stat_counter(struct perf_evsel *evsel)
295 {
296 struct perf_event_attr *attr = &evsel->attr;
297
298 if (scale)
299 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
300 PERF_FORMAT_TOTAL_TIME_RUNNING;
301
302 attr->inherit = !no_inherit;
303
304 if (target__has_cpu(&target))
305 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
306
307 if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) {
308 attr->disabled = 1;
309 if (!initial_delay)
310 attr->enable_on_exec = 1;
311 }
312
313 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
314 }
315
316 /*
317 * Does the counter have nsecs as a unit?
318 */
319 static inline int nsec_counter(struct perf_evsel *evsel)
320 {
321 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
322 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
323 return 1;
324
325 return 0;
326 }
327
328 static struct perf_evsel *nth_evsel(int n)
329 {
330 static struct perf_evsel **array;
331 static int array_len;
332 struct perf_evsel *ev;
333 int j;
334
335 /* Assumes this only called when evsel_list does not change anymore. */
336 if (!array) {
337 evlist__for_each(evsel_list, ev)
338 array_len++;
339 array = malloc(array_len * sizeof(void *));
340 if (!array)
341 exit(ENOMEM);
342 j = 0;
343 evlist__for_each(evsel_list, ev)
344 array[j++] = ev;
345 }
346 if (n < array_len)
347 return array[n];
348 return NULL;
349 }
350
351 /*
352 * Update various tracking values we maintain to print
353 * more semantic information such as miss/hit ratios,
354 * instruction rates, etc:
355 */
356 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
357 {
358 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
359 update_stats(&runtime_nsecs_stats[0], count[0]);
360 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
361 update_stats(&runtime_cycles_stats[0], count[0]);
362 else if (transaction_run &&
363 perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
364 update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
365 else if (transaction_run &&
366 perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
367 update_stats(&runtime_transaction_stats[0], count[0]);
368 else if (transaction_run &&
369 perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
370 update_stats(&runtime_elision_stats[0], count[0]);
371 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
372 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
373 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
374 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
375 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
376 update_stats(&runtime_branches_stats[0], count[0]);
377 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
378 update_stats(&runtime_cacherefs_stats[0], count[0]);
379 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
380 update_stats(&runtime_l1_dcache_stats[0], count[0]);
381 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
382 update_stats(&runtime_l1_icache_stats[0], count[0]);
383 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
384 update_stats(&runtime_ll_cache_stats[0], count[0]);
385 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
386 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
387 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
388 update_stats(&runtime_itlb_cache_stats[0], count[0]);
389 }
390
391 static void zero_per_pkg(struct perf_evsel *counter)
392 {
393 if (counter->per_pkg_mask)
394 memset(counter->per_pkg_mask, 0, MAX_NR_CPUS);
395 }
396
397 static int check_per_pkg(struct perf_evsel *counter, int cpu, bool *skip)
398 {
399 unsigned long *mask = counter->per_pkg_mask;
400 struct cpu_map *cpus = perf_evsel__cpus(counter);
401 int s;
402
403 *skip = false;
404
405 if (!counter->per_pkg)
406 return 0;
407
408 if (cpu_map__empty(cpus))
409 return 0;
410
411 if (!mask) {
412 mask = zalloc(MAX_NR_CPUS);
413 if (!mask)
414 return -ENOMEM;
415
416 counter->per_pkg_mask = mask;
417 }
418
419 s = cpu_map__get_socket(cpus, cpu);
420 if (s < 0)
421 return -1;
422
423 *skip = test_and_set_bit(s, mask) == 1;
424 return 0;
425 }
426
427 static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused,
428 struct perf_counts_values *count)
429 {
430 struct perf_counts_values *aggr = &evsel->counts->aggr;
431 static struct perf_counts_values zero;
432 bool skip = false;
433
434 if (check_per_pkg(evsel, cpu, &skip)) {
435 pr_err("failed to read per-pkg counter\n");
436 return -1;
437 }
438
439 if (skip)
440 count = &zero;
441
442 switch (aggr_mode) {
443 case AGGR_CORE:
444 case AGGR_SOCKET:
445 case AGGR_NONE:
446 if (!evsel->snapshot)
447 perf_evsel__compute_deltas(evsel, cpu, count);
448 perf_counts_values__scale(count, scale, NULL);
449 evsel->counts->cpu[cpu] = *count;
450 update_shadow_stats(evsel, count->values);
451 break;
452 case AGGR_GLOBAL:
453 aggr->val += count->val;
454 if (scale) {
455 aggr->ena += count->ena;
456 aggr->run += count->run;
457 }
458 default:
459 break;
460 }
461
462 return 0;
463 }
464
465 static int read_counter(struct perf_evsel *counter);
466
467 /*
468 * Read out the results of a single counter:
469 * aggregate counts across CPUs in system-wide mode
470 */
471 static int read_counter_aggr(struct perf_evsel *counter)
472 {
473 struct perf_counts_values *aggr = &counter->counts->aggr;
474 struct perf_stat *ps = counter->priv;
475 u64 *count = counter->counts->aggr.values;
476 int i;
477
478 aggr->val = aggr->ena = aggr->run = 0;
479
480 if (read_counter(counter))
481 return -1;
482
483 if (!counter->snapshot)
484 perf_evsel__compute_deltas(counter, -1, aggr);
485 perf_counts_values__scale(aggr, scale, &counter->counts->scaled);
486
487 for (i = 0; i < 3; i++)
488 update_stats(&ps->res_stats[i], count[i]);
489
490 if (verbose) {
491 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
492 perf_evsel__name(counter), count[0], count[1], count[2]);
493 }
494
495 /*
496 * Save the full runtime - to allow normalization during printout:
497 */
498 update_shadow_stats(counter, count);
499
500 return 0;
501 }
502
503 /*
504 * Read out the results of a single counter:
505 * do not aggregate counts across CPUs in system-wide mode
506 */
507 static int read_counter(struct perf_evsel *counter)
508 {
509 int nthreads = thread_map__nr(evsel_list->threads);
510 int ncpus = perf_evsel__nr_cpus(counter);
511 int cpu, thread;
512
513 if (counter->system_wide)
514 nthreads = 1;
515
516 if (counter->per_pkg)
517 zero_per_pkg(counter);
518
519 for (thread = 0; thread < nthreads; thread++) {
520 for (cpu = 0; cpu < ncpus; cpu++) {
521 if (perf_evsel__read_cb(counter, cpu, thread, read_cb))
522 return -1;
523 }
524 }
525
526 return 0;
527 }
528
529 static void print_interval(void)
530 {
531 static int num_print_interval;
532 struct perf_evsel *counter;
533 struct perf_stat *ps;
534 struct timespec ts, rs;
535 char prefix[64];
536
537 if (aggr_mode == AGGR_GLOBAL) {
538 evlist__for_each(evsel_list, counter) {
539 ps = counter->priv;
540 memset(ps->res_stats, 0, sizeof(ps->res_stats));
541 read_counter_aggr(counter);
542 }
543 } else {
544 evlist__for_each(evsel_list, counter) {
545 ps = counter->priv;
546 memset(ps->res_stats, 0, sizeof(ps->res_stats));
547 read_counter(counter);
548 }
549 }
550
551 clock_gettime(CLOCK_MONOTONIC, &ts);
552 diff_timespec(&rs, &ts, &ref_time);
553 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
554
555 if (num_print_interval == 0 && !csv_output) {
556 switch (aggr_mode) {
557 case AGGR_SOCKET:
558 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
559 break;
560 case AGGR_CORE:
561 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
562 break;
563 case AGGR_NONE:
564 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
565 break;
566 case AGGR_GLOBAL:
567 default:
568 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
569 }
570 }
571
572 if (++num_print_interval == 25)
573 num_print_interval = 0;
574
575 switch (aggr_mode) {
576 case AGGR_CORE:
577 case AGGR_SOCKET:
578 print_aggr(prefix);
579 break;
580 case AGGR_NONE:
581 evlist__for_each(evsel_list, counter)
582 print_counter(counter, prefix);
583 break;
584 case AGGR_GLOBAL:
585 default:
586 evlist__for_each(evsel_list, counter)
587 print_counter_aggr(counter, prefix);
588 }
589
590 fflush(output);
591 }
592
593 static void handle_initial_delay(void)
594 {
595 struct perf_evsel *counter;
596
597 if (initial_delay) {
598 const int ncpus = cpu_map__nr(evsel_list->cpus),
599 nthreads = thread_map__nr(evsel_list->threads);
600
601 usleep(initial_delay * 1000);
602 evlist__for_each(evsel_list, counter)
603 perf_evsel__enable(counter, ncpus, nthreads);
604 }
605 }
606
607 static volatile int workload_exec_errno;
608
609 /*
610 * perf_evlist__prepare_workload will send a SIGUSR1
611 * if the fork fails, since we asked by setting its
612 * want_signal to true.
613 */
614 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
615 void *ucontext __maybe_unused)
616 {
617 workload_exec_errno = info->si_value.sival_int;
618 }
619
620 static int __run_perf_stat(int argc, const char **argv)
621 {
622 char msg[512];
623 unsigned long long t0, t1;
624 struct perf_evsel *counter;
625 struct timespec ts;
626 size_t l;
627 int status = 0;
628 const bool forks = (argc > 0);
629
630 if (interval) {
631 ts.tv_sec = interval / 1000;
632 ts.tv_nsec = (interval % 1000) * 1000000;
633 } else {
634 ts.tv_sec = 1;
635 ts.tv_nsec = 0;
636 }
637
638 if (forks) {
639 if (perf_evlist__prepare_workload(evsel_list, &target, argv, false,
640 workload_exec_failed_signal) < 0) {
641 perror("failed to prepare workload");
642 return -1;
643 }
644 child_pid = evsel_list->workload.pid;
645 }
646
647 if (group)
648 perf_evlist__set_leader(evsel_list);
649
650 evlist__for_each(evsel_list, counter) {
651 if (create_perf_stat_counter(counter) < 0) {
652 /*
653 * PPC returns ENXIO for HW counters until 2.6.37
654 * (behavior changed with commit b0a873e).
655 */
656 if (errno == EINVAL || errno == ENOSYS ||
657 errno == ENOENT || errno == EOPNOTSUPP ||
658 errno == ENXIO) {
659 if (verbose)
660 ui__warning("%s event is not supported by the kernel.\n",
661 perf_evsel__name(counter));
662 counter->supported = false;
663 continue;
664 }
665
666 perf_evsel__open_strerror(counter, &target,
667 errno, msg, sizeof(msg));
668 ui__error("%s\n", msg);
669
670 if (child_pid != -1)
671 kill(child_pid, SIGTERM);
672
673 return -1;
674 }
675 counter->supported = true;
676
677 l = strlen(counter->unit);
678 if (l > unit_width)
679 unit_width = l;
680 }
681
682 if (perf_evlist__apply_filters(evsel_list)) {
683 error("failed to set filter with %d (%s)\n", errno,
684 strerror_r(errno, msg, sizeof(msg)));
685 return -1;
686 }
687
688 /*
689 * Enable counters and exec the command:
690 */
691 t0 = rdclock();
692 clock_gettime(CLOCK_MONOTONIC, &ref_time);
693
694 if (forks) {
695 perf_evlist__start_workload(evsel_list);
696 handle_initial_delay();
697
698 if (interval) {
699 while (!waitpid(child_pid, &status, WNOHANG)) {
700 nanosleep(&ts, NULL);
701 print_interval();
702 }
703 }
704 wait(&status);
705
706 if (workload_exec_errno) {
707 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
708 pr_err("Workload failed: %s\n", emsg);
709 return -1;
710 }
711
712 if (WIFSIGNALED(status))
713 psignal(WTERMSIG(status), argv[0]);
714 } else {
715 handle_initial_delay();
716 while (!done) {
717 nanosleep(&ts, NULL);
718 if (interval)
719 print_interval();
720 }
721 }
722
723 t1 = rdclock();
724
725 update_stats(&walltime_nsecs_stats, t1 - t0);
726
727 if (aggr_mode == AGGR_GLOBAL) {
728 evlist__for_each(evsel_list, counter) {
729 read_counter_aggr(counter);
730 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
731 thread_map__nr(evsel_list->threads));
732 }
733 } else {
734 evlist__for_each(evsel_list, counter) {
735 read_counter(counter);
736 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
737 }
738 }
739
740 return WEXITSTATUS(status);
741 }
742
743 static int run_perf_stat(int argc, const char **argv)
744 {
745 int ret;
746
747 if (pre_cmd) {
748 ret = system(pre_cmd);
749 if (ret)
750 return ret;
751 }
752
753 if (sync_run)
754 sync();
755
756 ret = __run_perf_stat(argc, argv);
757 if (ret)
758 return ret;
759
760 if (post_cmd) {
761 ret = system(post_cmd);
762 if (ret)
763 return ret;
764 }
765
766 return ret;
767 }
768
769 static void print_noise_pct(double total, double avg)
770 {
771 double pct = rel_stddev_stats(total, avg);
772
773 if (csv_output)
774 fprintf(output, "%s%.2f%%", csv_sep, pct);
775 else if (pct)
776 fprintf(output, " ( +-%6.2f%% )", pct);
777 }
778
779 static void print_noise(struct perf_evsel *evsel, double avg)
780 {
781 struct perf_stat *ps;
782
783 if (run_count == 1)
784 return;
785
786 ps = evsel->priv;
787 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
788 }
789
790 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
791 {
792 switch (aggr_mode) {
793 case AGGR_CORE:
794 fprintf(output, "S%d-C%*d%s%*d%s",
795 cpu_map__id_to_socket(id),
796 csv_output ? 0 : -8,
797 cpu_map__id_to_cpu(id),
798 csv_sep,
799 csv_output ? 0 : 4,
800 nr,
801 csv_sep);
802 break;
803 case AGGR_SOCKET:
804 fprintf(output, "S%*d%s%*d%s",
805 csv_output ? 0 : -5,
806 id,
807 csv_sep,
808 csv_output ? 0 : 4,
809 nr,
810 csv_sep);
811 break;
812 case AGGR_NONE:
813 fprintf(output, "CPU%*d%s",
814 csv_output ? 0 : -4,
815 perf_evsel__cpus(evsel)->map[id], csv_sep);
816 break;
817 case AGGR_GLOBAL:
818 default:
819 break;
820 }
821 }
822
823 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
824 {
825 double msecs = avg / 1e6;
826 const char *fmt_v, *fmt_n;
827 char name[25];
828
829 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
830 fmt_n = csv_output ? "%s" : "%-25s";
831
832 aggr_printout(evsel, id, nr);
833
834 scnprintf(name, sizeof(name), "%s%s",
835 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
836
837 fprintf(output, fmt_v, msecs, csv_sep);
838
839 if (csv_output)
840 fprintf(output, "%s%s", evsel->unit, csv_sep);
841 else
842 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
843
844 fprintf(output, fmt_n, name);
845
846 if (evsel->cgrp)
847 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
848
849 if (csv_output || interval)
850 return;
851
852 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
853 fprintf(output, " # %8.3f CPUs utilized ",
854 avg / avg_stats(&walltime_nsecs_stats));
855 else
856 fprintf(output, " ");
857 }
858
859 /* used for get_ratio_color() */
860 enum grc_type {
861 GRC_STALLED_CYCLES_FE,
862 GRC_STALLED_CYCLES_BE,
863 GRC_CACHE_MISSES,
864 GRC_MAX_NR
865 };
866
867 static const char *get_ratio_color(enum grc_type type, double ratio)
868 {
869 static const double grc_table[GRC_MAX_NR][3] = {
870 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
871 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
872 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
873 };
874 const char *color = PERF_COLOR_NORMAL;
875
876 if (ratio > grc_table[type][0])
877 color = PERF_COLOR_RED;
878 else if (ratio > grc_table[type][1])
879 color = PERF_COLOR_MAGENTA;
880 else if (ratio > grc_table[type][2])
881 color = PERF_COLOR_YELLOW;
882
883 return color;
884 }
885
886 static void print_stalled_cycles_frontend(int cpu,
887 struct perf_evsel *evsel
888 __maybe_unused, double avg)
889 {
890 double total, ratio = 0.0;
891 const char *color;
892
893 total = avg_stats(&runtime_cycles_stats[cpu]);
894
895 if (total)
896 ratio = avg / total * 100.0;
897
898 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
899
900 fprintf(output, " # ");
901 color_fprintf(output, color, "%6.2f%%", ratio);
902 fprintf(output, " frontend cycles idle ");
903 }
904
905 static void print_stalled_cycles_backend(int cpu,
906 struct perf_evsel *evsel
907 __maybe_unused, double avg)
908 {
909 double total, ratio = 0.0;
910 const char *color;
911
912 total = avg_stats(&runtime_cycles_stats[cpu]);
913
914 if (total)
915 ratio = avg / total * 100.0;
916
917 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
918
919 fprintf(output, " # ");
920 color_fprintf(output, color, "%6.2f%%", ratio);
921 fprintf(output, " backend cycles idle ");
922 }
923
924 static void print_branch_misses(int cpu,
925 struct perf_evsel *evsel __maybe_unused,
926 double avg)
927 {
928 double total, ratio = 0.0;
929 const char *color;
930
931 total = avg_stats(&runtime_branches_stats[cpu]);
932
933 if (total)
934 ratio = avg / total * 100.0;
935
936 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
937
938 fprintf(output, " # ");
939 color_fprintf(output, color, "%6.2f%%", ratio);
940 fprintf(output, " of all branches ");
941 }
942
943 static void print_l1_dcache_misses(int cpu,
944 struct perf_evsel *evsel __maybe_unused,
945 double avg)
946 {
947 double total, ratio = 0.0;
948 const char *color;
949
950 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
951
952 if (total)
953 ratio = avg / total * 100.0;
954
955 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
956
957 fprintf(output, " # ");
958 color_fprintf(output, color, "%6.2f%%", ratio);
959 fprintf(output, " of all L1-dcache hits ");
960 }
961
962 static void print_l1_icache_misses(int cpu,
963 struct perf_evsel *evsel __maybe_unused,
964 double avg)
965 {
966 double total, ratio = 0.0;
967 const char *color;
968
969 total = avg_stats(&runtime_l1_icache_stats[cpu]);
970
971 if (total)
972 ratio = avg / total * 100.0;
973
974 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
975
976 fprintf(output, " # ");
977 color_fprintf(output, color, "%6.2f%%", ratio);
978 fprintf(output, " of all L1-icache hits ");
979 }
980
981 static void print_dtlb_cache_misses(int cpu,
982 struct perf_evsel *evsel __maybe_unused,
983 double avg)
984 {
985 double total, ratio = 0.0;
986 const char *color;
987
988 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
989
990 if (total)
991 ratio = avg / total * 100.0;
992
993 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
994
995 fprintf(output, " # ");
996 color_fprintf(output, color, "%6.2f%%", ratio);
997 fprintf(output, " of all dTLB cache hits ");
998 }
999
1000 static void print_itlb_cache_misses(int cpu,
1001 struct perf_evsel *evsel __maybe_unused,
1002 double avg)
1003 {
1004 double total, ratio = 0.0;
1005 const char *color;
1006
1007 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
1008
1009 if (total)
1010 ratio = avg / total * 100.0;
1011
1012 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
1013
1014 fprintf(output, " # ");
1015 color_fprintf(output, color, "%6.2f%%", ratio);
1016 fprintf(output, " of all iTLB cache hits ");
1017 }
1018
1019 static void print_ll_cache_misses(int cpu,
1020 struct perf_evsel *evsel __maybe_unused,
1021 double avg)
1022 {
1023 double total, ratio = 0.0;
1024 const char *color;
1025
1026 total = avg_stats(&runtime_ll_cache_stats[cpu]);
1027
1028 if (total)
1029 ratio = avg / total * 100.0;
1030
1031 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
1032
1033 fprintf(output, " # ");
1034 color_fprintf(output, color, "%6.2f%%", ratio);
1035 fprintf(output, " of all LL-cache hits ");
1036 }
1037
1038 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1039 {
1040 double total, ratio = 0.0, total2;
1041 double sc = evsel->scale;
1042 const char *fmt;
1043 int cpu = cpu_map__id_to_cpu(id);
1044
1045 if (csv_output) {
1046 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
1047 } else {
1048 if (big_num)
1049 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
1050 else
1051 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
1052 }
1053
1054 aggr_printout(evsel, id, nr);
1055
1056 if (aggr_mode == AGGR_GLOBAL)
1057 cpu = 0;
1058
1059 fprintf(output, fmt, avg, csv_sep);
1060
1061 if (evsel->unit)
1062 fprintf(output, "%-*s%s",
1063 csv_output ? 0 : unit_width,
1064 evsel->unit, csv_sep);
1065
1066 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1067
1068 if (evsel->cgrp)
1069 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1070
1071 if (csv_output || interval)
1072 return;
1073
1074 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
1075 total = avg_stats(&runtime_cycles_stats[cpu]);
1076 if (total) {
1077 ratio = avg / total;
1078 fprintf(output, " # %5.2f insns per cycle ", ratio);
1079 }
1080 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
1081 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
1082
1083 if (total && avg) {
1084 ratio = total / avg;
1085 fprintf(output, "\n");
1086 if (aggr_mode == AGGR_NONE)
1087 fprintf(output, " ");
1088 fprintf(output, " # %5.2f stalled cycles per insn", ratio);
1089 }
1090
1091 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
1092 runtime_branches_stats[cpu].n != 0) {
1093 print_branch_misses(cpu, evsel, avg);
1094 } else if (
1095 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1096 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
1097 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1098 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1099 runtime_l1_dcache_stats[cpu].n != 0) {
1100 print_l1_dcache_misses(cpu, evsel, avg);
1101 } else if (
1102 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1103 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
1104 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1105 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1106 runtime_l1_icache_stats[cpu].n != 0) {
1107 print_l1_icache_misses(cpu, evsel, avg);
1108 } else if (
1109 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1110 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
1111 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1112 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1113 runtime_dtlb_cache_stats[cpu].n != 0) {
1114 print_dtlb_cache_misses(cpu, evsel, avg);
1115 } else if (
1116 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1117 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
1118 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1119 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1120 runtime_itlb_cache_stats[cpu].n != 0) {
1121 print_itlb_cache_misses(cpu, evsel, avg);
1122 } else if (
1123 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1124 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
1125 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1126 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1127 runtime_ll_cache_stats[cpu].n != 0) {
1128 print_ll_cache_misses(cpu, evsel, avg);
1129 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
1130 runtime_cacherefs_stats[cpu].n != 0) {
1131 total = avg_stats(&runtime_cacherefs_stats[cpu]);
1132
1133 if (total)
1134 ratio = avg * 100 / total;
1135
1136 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
1137
1138 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
1139 print_stalled_cycles_frontend(cpu, evsel, avg);
1140 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
1141 print_stalled_cycles_backend(cpu, evsel, avg);
1142 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
1143 total = avg_stats(&runtime_nsecs_stats[cpu]);
1144
1145 if (total) {
1146 ratio = avg / total;
1147 fprintf(output, " # %8.3f GHz ", ratio);
1148 }
1149 } else if (transaction_run &&
1150 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1151 total = avg_stats(&runtime_cycles_stats[cpu]);
1152 if (total)
1153 fprintf(output,
1154 " # %5.2f%% transactional cycles ",
1155 100.0 * (avg / total));
1156 } else if (transaction_run &&
1157 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1158 total = avg_stats(&runtime_cycles_stats[cpu]);
1159 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1160 if (total2 < avg)
1161 total2 = avg;
1162 if (total)
1163 fprintf(output,
1164 " # %5.2f%% aborted cycles ",
1165 100.0 * ((total2-avg) / total));
1166 } else if (transaction_run &&
1167 perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1168 avg > 0 &&
1169 runtime_cycles_in_tx_stats[cpu].n != 0) {
1170 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1171
1172 if (total)
1173 ratio = total / avg;
1174
1175 fprintf(output, " # %8.0f cycles / transaction ", ratio);
1176 } else if (transaction_run &&
1177 perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1178 avg > 0 &&
1179 runtime_cycles_in_tx_stats[cpu].n != 0) {
1180 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1181
1182 if (total)
1183 ratio = total / avg;
1184
1185 fprintf(output, " # %8.0f cycles / elision ", ratio);
1186 } else if (runtime_nsecs_stats[cpu].n != 0) {
1187 char unit = 'M';
1188
1189 total = avg_stats(&runtime_nsecs_stats[cpu]);
1190
1191 if (total)
1192 ratio = 1000.0 * avg / total;
1193 if (ratio < 0.001) {
1194 ratio *= 1000;
1195 unit = 'K';
1196 }
1197
1198 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
1199 } else {
1200 fprintf(output, " ");
1201 }
1202 }
1203
1204 static void print_aggr(char *prefix)
1205 {
1206 struct perf_evsel *counter;
1207 int cpu, cpu2, s, s2, id, nr;
1208 double uval;
1209 u64 ena, run, val;
1210
1211 if (!(aggr_map || aggr_get_id))
1212 return;
1213
1214 for (s = 0; s < aggr_map->nr; s++) {
1215 id = aggr_map->map[s];
1216 evlist__for_each(evsel_list, counter) {
1217 val = ena = run = 0;
1218 nr = 0;
1219 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1220 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1221 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1222 if (s2 != id)
1223 continue;
1224 val += counter->counts->cpu[cpu].val;
1225 ena += counter->counts->cpu[cpu].ena;
1226 run += counter->counts->cpu[cpu].run;
1227 nr++;
1228 }
1229 if (prefix)
1230 fprintf(output, "%s", prefix);
1231
1232 if (run == 0 || ena == 0) {
1233 aggr_printout(counter, id, nr);
1234
1235 fprintf(output, "%*s%s",
1236 csv_output ? 0 : 18,
1237 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1238 csv_sep);
1239
1240 fprintf(output, "%-*s%s",
1241 csv_output ? 0 : unit_width,
1242 counter->unit, csv_sep);
1243
1244 fprintf(output, "%*s",
1245 csv_output ? 0 : -25,
1246 perf_evsel__name(counter));
1247
1248 if (counter->cgrp)
1249 fprintf(output, "%s%s",
1250 csv_sep, counter->cgrp->name);
1251
1252 fputc('\n', output);
1253 continue;
1254 }
1255 uval = val * counter->scale;
1256
1257 if (nsec_counter(counter))
1258 nsec_printout(id, nr, counter, uval);
1259 else
1260 abs_printout(id, nr, counter, uval);
1261
1262 if (!csv_output) {
1263 print_noise(counter, 1.0);
1264
1265 if (run != ena)
1266 fprintf(output, " (%.2f%%)",
1267 100.0 * run / ena);
1268 }
1269 fputc('\n', output);
1270 }
1271 }
1272 }
1273
1274 /*
1275 * Print out the results of a single counter:
1276 * aggregated counts in system-wide mode
1277 */
1278 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1279 {
1280 struct perf_stat *ps = counter->priv;
1281 double avg = avg_stats(&ps->res_stats[0]);
1282 int scaled = counter->counts->scaled;
1283 double uval;
1284
1285 if (prefix)
1286 fprintf(output, "%s", prefix);
1287
1288 if (scaled == -1) {
1289 fprintf(output, "%*s%s",
1290 csv_output ? 0 : 18,
1291 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1292 csv_sep);
1293 fprintf(output, "%-*s%s",
1294 csv_output ? 0 : unit_width,
1295 counter->unit, csv_sep);
1296 fprintf(output, "%*s",
1297 csv_output ? 0 : -25,
1298 perf_evsel__name(counter));
1299
1300 if (counter->cgrp)
1301 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1302
1303 fputc('\n', output);
1304 return;
1305 }
1306
1307 uval = avg * counter->scale;
1308
1309 if (nsec_counter(counter))
1310 nsec_printout(-1, 0, counter, uval);
1311 else
1312 abs_printout(-1, 0, counter, uval);
1313
1314 print_noise(counter, avg);
1315
1316 if (csv_output) {
1317 fputc('\n', output);
1318 return;
1319 }
1320
1321 if (scaled) {
1322 double avg_enabled, avg_running;
1323
1324 avg_enabled = avg_stats(&ps->res_stats[1]);
1325 avg_running = avg_stats(&ps->res_stats[2]);
1326
1327 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1328 }
1329 fprintf(output, "\n");
1330 }
1331
1332 /*
1333 * Print out the results of a single counter:
1334 * does not use aggregated count in system-wide
1335 */
1336 static void print_counter(struct perf_evsel *counter, char *prefix)
1337 {
1338 u64 ena, run, val;
1339 double uval;
1340 int cpu;
1341
1342 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1343 val = counter->counts->cpu[cpu].val;
1344 ena = counter->counts->cpu[cpu].ena;
1345 run = counter->counts->cpu[cpu].run;
1346
1347 if (prefix)
1348 fprintf(output, "%s", prefix);
1349
1350 if (run == 0 || ena == 0) {
1351 fprintf(output, "CPU%*d%s%*s%s",
1352 csv_output ? 0 : -4,
1353 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1354 csv_output ? 0 : 18,
1355 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1356 csv_sep);
1357
1358 fprintf(output, "%-*s%s",
1359 csv_output ? 0 : unit_width,
1360 counter->unit, csv_sep);
1361
1362 fprintf(output, "%*s",
1363 csv_output ? 0 : -25,
1364 perf_evsel__name(counter));
1365
1366 if (counter->cgrp)
1367 fprintf(output, "%s%s",
1368 csv_sep, counter->cgrp->name);
1369
1370 fputc('\n', output);
1371 continue;
1372 }
1373
1374 uval = val * counter->scale;
1375
1376 if (nsec_counter(counter))
1377 nsec_printout(cpu, 0, counter, uval);
1378 else
1379 abs_printout(cpu, 0, counter, uval);
1380
1381 if (!csv_output) {
1382 print_noise(counter, 1.0);
1383
1384 if (run != ena)
1385 fprintf(output, " (%.2f%%)",
1386 100.0 * run / ena);
1387 }
1388 fputc('\n', output);
1389 }
1390 }
1391
1392 static void print_stat(int argc, const char **argv)
1393 {
1394 struct perf_evsel *counter;
1395 int i;
1396
1397 fflush(stdout);
1398
1399 if (!csv_output) {
1400 fprintf(output, "\n");
1401 fprintf(output, " Performance counter stats for ");
1402 if (target.system_wide)
1403 fprintf(output, "\'system wide");
1404 else if (target.cpu_list)
1405 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1406 else if (!target__has_task(&target)) {
1407 fprintf(output, "\'%s", argv[0]);
1408 for (i = 1; i < argc; i++)
1409 fprintf(output, " %s", argv[i]);
1410 } else if (target.pid)
1411 fprintf(output, "process id \'%s", target.pid);
1412 else
1413 fprintf(output, "thread id \'%s", target.tid);
1414
1415 fprintf(output, "\'");
1416 if (run_count > 1)
1417 fprintf(output, " (%d runs)", run_count);
1418 fprintf(output, ":\n\n");
1419 }
1420
1421 switch (aggr_mode) {
1422 case AGGR_CORE:
1423 case AGGR_SOCKET:
1424 print_aggr(NULL);
1425 break;
1426 case AGGR_GLOBAL:
1427 evlist__for_each(evsel_list, counter)
1428 print_counter_aggr(counter, NULL);
1429 break;
1430 case AGGR_NONE:
1431 evlist__for_each(evsel_list, counter)
1432 print_counter(counter, NULL);
1433 break;
1434 default:
1435 break;
1436 }
1437
1438 if (!csv_output) {
1439 if (!null_run)
1440 fprintf(output, "\n");
1441 fprintf(output, " %17.9f seconds time elapsed",
1442 avg_stats(&walltime_nsecs_stats)/1e9);
1443 if (run_count > 1) {
1444 fprintf(output, " ");
1445 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1446 avg_stats(&walltime_nsecs_stats));
1447 }
1448 fprintf(output, "\n\n");
1449 }
1450 }
1451
1452 static volatile int signr = -1;
1453
1454 static void skip_signal(int signo)
1455 {
1456 if ((child_pid == -1) || interval)
1457 done = 1;
1458
1459 signr = signo;
1460 /*
1461 * render child_pid harmless
1462 * won't send SIGTERM to a random
1463 * process in case of race condition
1464 * and fast PID recycling
1465 */
1466 child_pid = -1;
1467 }
1468
1469 static void sig_atexit(void)
1470 {
1471 sigset_t set, oset;
1472
1473 /*
1474 * avoid race condition with SIGCHLD handler
1475 * in skip_signal() which is modifying child_pid
1476 * goal is to avoid send SIGTERM to a random
1477 * process
1478 */
1479 sigemptyset(&set);
1480 sigaddset(&set, SIGCHLD);
1481 sigprocmask(SIG_BLOCK, &set, &oset);
1482
1483 if (child_pid != -1)
1484 kill(child_pid, SIGTERM);
1485
1486 sigprocmask(SIG_SETMASK, &oset, NULL);
1487
1488 if (signr == -1)
1489 return;
1490
1491 signal(signr, SIG_DFL);
1492 kill(getpid(), signr);
1493 }
1494
1495 static int stat__set_big_num(const struct option *opt __maybe_unused,
1496 const char *s __maybe_unused, int unset)
1497 {
1498 big_num_opt = unset ? 0 : 1;
1499 return 0;
1500 }
1501
1502 static int perf_stat_init_aggr_mode(void)
1503 {
1504 switch (aggr_mode) {
1505 case AGGR_SOCKET:
1506 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1507 perror("cannot build socket map");
1508 return -1;
1509 }
1510 aggr_get_id = cpu_map__get_socket;
1511 break;
1512 case AGGR_CORE:
1513 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1514 perror("cannot build core map");
1515 return -1;
1516 }
1517 aggr_get_id = cpu_map__get_core;
1518 break;
1519 case AGGR_NONE:
1520 case AGGR_GLOBAL:
1521 default:
1522 break;
1523 }
1524 return 0;
1525 }
1526
1527 static int setup_events(const char * const *attrs, unsigned len)
1528 {
1529 unsigned i;
1530
1531 for (i = 0; i < len; i++) {
1532 if (parse_events(evsel_list, attrs[i]))
1533 return -1;
1534 }
1535 return 0;
1536 }
1537
1538 /*
1539 * Add default attributes, if there were no attributes specified or
1540 * if -d/--detailed, -d -d or -d -d -d is used:
1541 */
1542 static int add_default_attributes(void)
1543 {
1544 struct perf_event_attr default_attrs[] = {
1545
1546 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1547 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1548 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1549 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1550
1551 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1552 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1553 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1554 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1555 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1556 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1557
1558 };
1559
1560 /*
1561 * Detailed stats (-d), covering the L1 and last level data caches:
1562 */
1563 struct perf_event_attr detailed_attrs[] = {
1564
1565 { .type = PERF_TYPE_HW_CACHE,
1566 .config =
1567 PERF_COUNT_HW_CACHE_L1D << 0 |
1568 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1569 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1570
1571 { .type = PERF_TYPE_HW_CACHE,
1572 .config =
1573 PERF_COUNT_HW_CACHE_L1D << 0 |
1574 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1575 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1576
1577 { .type = PERF_TYPE_HW_CACHE,
1578 .config =
1579 PERF_COUNT_HW_CACHE_LL << 0 |
1580 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1581 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1582
1583 { .type = PERF_TYPE_HW_CACHE,
1584 .config =
1585 PERF_COUNT_HW_CACHE_LL << 0 |
1586 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1587 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1588 };
1589
1590 /*
1591 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1592 */
1593 struct perf_event_attr very_detailed_attrs[] = {
1594
1595 { .type = PERF_TYPE_HW_CACHE,
1596 .config =
1597 PERF_COUNT_HW_CACHE_L1I << 0 |
1598 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1599 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1600
1601 { .type = PERF_TYPE_HW_CACHE,
1602 .config =
1603 PERF_COUNT_HW_CACHE_L1I << 0 |
1604 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1605 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1606
1607 { .type = PERF_TYPE_HW_CACHE,
1608 .config =
1609 PERF_COUNT_HW_CACHE_DTLB << 0 |
1610 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1611 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1612
1613 { .type = PERF_TYPE_HW_CACHE,
1614 .config =
1615 PERF_COUNT_HW_CACHE_DTLB << 0 |
1616 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1617 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1618
1619 { .type = PERF_TYPE_HW_CACHE,
1620 .config =
1621 PERF_COUNT_HW_CACHE_ITLB << 0 |
1622 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1623 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1624
1625 { .type = PERF_TYPE_HW_CACHE,
1626 .config =
1627 PERF_COUNT_HW_CACHE_ITLB << 0 |
1628 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1629 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1630
1631 };
1632
1633 /*
1634 * Very, very detailed stats (-d -d -d), adding prefetch events:
1635 */
1636 struct perf_event_attr very_very_detailed_attrs[] = {
1637
1638 { .type = PERF_TYPE_HW_CACHE,
1639 .config =
1640 PERF_COUNT_HW_CACHE_L1D << 0 |
1641 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1642 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1643
1644 { .type = PERF_TYPE_HW_CACHE,
1645 .config =
1646 PERF_COUNT_HW_CACHE_L1D << 0 |
1647 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1648 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1649 };
1650
1651 /* Set attrs if no event is selected and !null_run: */
1652 if (null_run)
1653 return 0;
1654
1655 if (transaction_run) {
1656 int err;
1657 if (pmu_have_event("cpu", "cycles-ct") &&
1658 pmu_have_event("cpu", "el-start"))
1659 err = setup_events(transaction_attrs,
1660 ARRAY_SIZE(transaction_attrs));
1661 else
1662 err = setup_events(transaction_limited_attrs,
1663 ARRAY_SIZE(transaction_limited_attrs));
1664 if (err < 0) {
1665 fprintf(stderr, "Cannot set up transaction events\n");
1666 return -1;
1667 }
1668 return 0;
1669 }
1670
1671 if (!evsel_list->nr_entries) {
1672 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1673 return -1;
1674 }
1675
1676 /* Detailed events get appended to the event list: */
1677
1678 if (detailed_run < 1)
1679 return 0;
1680
1681 /* Append detailed run extra attributes: */
1682 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1683 return -1;
1684
1685 if (detailed_run < 2)
1686 return 0;
1687
1688 /* Append very detailed run extra attributes: */
1689 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1690 return -1;
1691
1692 if (detailed_run < 3)
1693 return 0;
1694
1695 /* Append very, very detailed run extra attributes: */
1696 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1697 }
1698
1699 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1700 {
1701 bool append_file = false;
1702 int output_fd = 0;
1703 const char *output_name = NULL;
1704 const struct option options[] = {
1705 OPT_BOOLEAN('T', "transaction", &transaction_run,
1706 "hardware transaction statistics"),
1707 OPT_CALLBACK('e', "event", &evsel_list, "event",
1708 "event selector. use 'perf list' to list available events",
1709 parse_events_option),
1710 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1711 "event filter", parse_filter),
1712 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1713 "child tasks do not inherit counters"),
1714 OPT_STRING('p', "pid", &target.pid, "pid",
1715 "stat events on existing process id"),
1716 OPT_STRING('t', "tid", &target.tid, "tid",
1717 "stat events on existing thread id"),
1718 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1719 "system-wide collection from all CPUs"),
1720 OPT_BOOLEAN('g', "group", &group,
1721 "put the counters into a counter group"),
1722 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1723 OPT_INCR('v', "verbose", &verbose,
1724 "be more verbose (show counter open errors, etc)"),
1725 OPT_INTEGER('r', "repeat", &run_count,
1726 "repeat command and print average + stddev (max: 100, forever: 0)"),
1727 OPT_BOOLEAN('n', "null", &null_run,
1728 "null run - dont start any counters"),
1729 OPT_INCR('d', "detailed", &detailed_run,
1730 "detailed run - start a lot of events"),
1731 OPT_BOOLEAN('S', "sync", &sync_run,
1732 "call sync() before starting a run"),
1733 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1734 "print large numbers with thousands\' separators",
1735 stat__set_big_num),
1736 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1737 "list of cpus to monitor in system-wide"),
1738 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1739 "disable CPU count aggregation", AGGR_NONE),
1740 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1741 "print counts with custom separator"),
1742 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1743 "monitor event in cgroup name only", parse_cgroups),
1744 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1745 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1746 OPT_INTEGER(0, "log-fd", &output_fd,
1747 "log output to fd, instead of stderr"),
1748 OPT_STRING(0, "pre", &pre_cmd, "command",
1749 "command to run prior to the measured command"),
1750 OPT_STRING(0, "post", &post_cmd, "command",
1751 "command to run after to the measured command"),
1752 OPT_UINTEGER('I', "interval-print", &interval,
1753 "print counts at regular interval in ms (>= 100)"),
1754 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1755 "aggregate counts per processor socket", AGGR_SOCKET),
1756 OPT_SET_UINT(0, "per-core", &aggr_mode,
1757 "aggregate counts per physical processor core", AGGR_CORE),
1758 OPT_UINTEGER('D', "delay", &initial_delay,
1759 "ms to wait before starting measurement after program start"),
1760 OPT_END()
1761 };
1762 const char * const stat_usage[] = {
1763 "perf stat [<options>] [<command>]",
1764 NULL
1765 };
1766 int status = -EINVAL, run_idx;
1767 const char *mode;
1768
1769 setlocale(LC_ALL, "");
1770
1771 evsel_list = perf_evlist__new();
1772 if (evsel_list == NULL)
1773 return -ENOMEM;
1774
1775 argc = parse_options(argc, argv, options, stat_usage,
1776 PARSE_OPT_STOP_AT_NON_OPTION);
1777
1778 output = stderr;
1779 if (output_name && strcmp(output_name, "-"))
1780 output = NULL;
1781
1782 if (output_name && output_fd) {
1783 fprintf(stderr, "cannot use both --output and --log-fd\n");
1784 parse_options_usage(stat_usage, options, "o", 1);
1785 parse_options_usage(NULL, options, "log-fd", 0);
1786 goto out;
1787 }
1788
1789 if (output_fd < 0) {
1790 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1791 parse_options_usage(stat_usage, options, "log-fd", 0);
1792 goto out;
1793 }
1794
1795 if (!output) {
1796 struct timespec tm;
1797 mode = append_file ? "a" : "w";
1798
1799 output = fopen(output_name, mode);
1800 if (!output) {
1801 perror("failed to create output file");
1802 return -1;
1803 }
1804 clock_gettime(CLOCK_REALTIME, &tm);
1805 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1806 } else if (output_fd > 0) {
1807 mode = append_file ? "a" : "w";
1808 output = fdopen(output_fd, mode);
1809 if (!output) {
1810 perror("Failed opening logfd");
1811 return -errno;
1812 }
1813 }
1814
1815 if (csv_sep) {
1816 csv_output = true;
1817 if (!strcmp(csv_sep, "\\t"))
1818 csv_sep = "\t";
1819 } else
1820 csv_sep = DEFAULT_SEPARATOR;
1821
1822 /*
1823 * let the spreadsheet do the pretty-printing
1824 */
1825 if (csv_output) {
1826 /* User explicitly passed -B? */
1827 if (big_num_opt == 1) {
1828 fprintf(stderr, "-B option not supported with -x\n");
1829 parse_options_usage(stat_usage, options, "B", 1);
1830 parse_options_usage(NULL, options, "x", 1);
1831 goto out;
1832 } else /* Nope, so disable big number formatting */
1833 big_num = false;
1834 } else if (big_num_opt == 0) /* User passed --no-big-num */
1835 big_num = false;
1836
1837 if (!argc && target__none(&target))
1838 usage_with_options(stat_usage, options);
1839
1840 if (run_count < 0) {
1841 pr_err("Run count must be a positive number\n");
1842 parse_options_usage(stat_usage, options, "r", 1);
1843 goto out;
1844 } else if (run_count == 0) {
1845 forever = true;
1846 run_count = 1;
1847 }
1848
1849 /* no_aggr, cgroup are for system-wide only */
1850 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
1851 !target__has_cpu(&target)) {
1852 fprintf(stderr, "both cgroup and no-aggregation "
1853 "modes only available in system-wide mode\n");
1854
1855 parse_options_usage(stat_usage, options, "G", 1);
1856 parse_options_usage(NULL, options, "A", 1);
1857 parse_options_usage(NULL, options, "a", 1);
1858 goto out;
1859 }
1860
1861 if (add_default_attributes())
1862 goto out;
1863
1864 target__validate(&target);
1865
1866 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1867 if (target__has_task(&target)) {
1868 pr_err("Problems finding threads of monitor\n");
1869 parse_options_usage(stat_usage, options, "p", 1);
1870 parse_options_usage(NULL, options, "t", 1);
1871 } else if (target__has_cpu(&target)) {
1872 perror("failed to parse CPUs map");
1873 parse_options_usage(stat_usage, options, "C", 1);
1874 parse_options_usage(NULL, options, "a", 1);
1875 }
1876 goto out;
1877 }
1878 if (interval && interval < 100) {
1879 pr_err("print interval must be >= 100ms\n");
1880 parse_options_usage(stat_usage, options, "I", 1);
1881 goto out;
1882 }
1883
1884 if (perf_evlist__alloc_stats(evsel_list, interval))
1885 goto out;
1886
1887 if (perf_stat_init_aggr_mode())
1888 goto out;
1889
1890 /*
1891 * We dont want to block the signals - that would cause
1892 * child tasks to inherit that and Ctrl-C would not work.
1893 * What we want is for Ctrl-C to work in the exec()-ed
1894 * task, but being ignored by perf stat itself:
1895 */
1896 atexit(sig_atexit);
1897 if (!forever)
1898 signal(SIGINT, skip_signal);
1899 signal(SIGCHLD, skip_signal);
1900 signal(SIGALRM, skip_signal);
1901 signal(SIGABRT, skip_signal);
1902
1903 status = 0;
1904 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1905 if (run_count != 1 && verbose)
1906 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1907 run_idx + 1);
1908
1909 status = run_perf_stat(argc, argv);
1910 if (forever && status != -1) {
1911 print_stat(argc, argv);
1912 perf_stat__reset_stats(evsel_list);
1913 }
1914 }
1915
1916 if (!forever && status != -1 && !interval)
1917 print_stat(argc, argv);
1918
1919 perf_evlist__free_stats(evsel_list);
1920 out:
1921 perf_evlist__delete(evsel_list);
1922 return status;
1923 }
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