]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - tools/perf/builtin-stat.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'perf/x86' into perf/core, because it's ready
[mirror_ubuntu-artful-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 int cpu)
358 {
359 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
360 update_stats(&runtime_nsecs_stats[cpu], count[0]);
361 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
362 update_stats(&runtime_cycles_stats[cpu], count[0]);
363 else if (transaction_run &&
364 perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
365 update_stats(&runtime_cycles_in_tx_stats[cpu], count[0]);
366 else if (transaction_run &&
367 perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
368 update_stats(&runtime_transaction_stats[cpu], count[0]);
369 else if (transaction_run &&
370 perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
371 update_stats(&runtime_elision_stats[cpu], count[0]);
372 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
373 update_stats(&runtime_stalled_cycles_front_stats[cpu], count[0]);
374 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
375 update_stats(&runtime_stalled_cycles_back_stats[cpu], count[0]);
376 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
377 update_stats(&runtime_branches_stats[cpu], count[0]);
378 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
379 update_stats(&runtime_cacherefs_stats[cpu], count[0]);
380 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
381 update_stats(&runtime_l1_dcache_stats[cpu], count[0]);
382 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
383 update_stats(&runtime_l1_icache_stats[cpu], count[0]);
384 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
385 update_stats(&runtime_ll_cache_stats[cpu], count[0]);
386 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
387 update_stats(&runtime_dtlb_cache_stats[cpu], count[0]);
388 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
389 update_stats(&runtime_itlb_cache_stats[cpu], count[0]);
390 }
391
392 static void zero_per_pkg(struct perf_evsel *counter)
393 {
394 if (counter->per_pkg_mask)
395 memset(counter->per_pkg_mask, 0, MAX_NR_CPUS);
396 }
397
398 static int check_per_pkg(struct perf_evsel *counter, int cpu, bool *skip)
399 {
400 unsigned long *mask = counter->per_pkg_mask;
401 struct cpu_map *cpus = perf_evsel__cpus(counter);
402 int s;
403
404 *skip = false;
405
406 if (!counter->per_pkg)
407 return 0;
408
409 if (cpu_map__empty(cpus))
410 return 0;
411
412 if (!mask) {
413 mask = zalloc(MAX_NR_CPUS);
414 if (!mask)
415 return -ENOMEM;
416
417 counter->per_pkg_mask = mask;
418 }
419
420 s = cpu_map__get_socket(cpus, cpu);
421 if (s < 0)
422 return -1;
423
424 *skip = test_and_set_bit(s, mask) == 1;
425 return 0;
426 }
427
428 static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused,
429 struct perf_counts_values *count)
430 {
431 struct perf_counts_values *aggr = &evsel->counts->aggr;
432 static struct perf_counts_values zero;
433 bool skip = false;
434
435 if (check_per_pkg(evsel, cpu, &skip)) {
436 pr_err("failed to read per-pkg counter\n");
437 return -1;
438 }
439
440 if (skip)
441 count = &zero;
442
443 switch (aggr_mode) {
444 case AGGR_CORE:
445 case AGGR_SOCKET:
446 case AGGR_NONE:
447 if (!evsel->snapshot)
448 perf_evsel__compute_deltas(evsel, cpu, count);
449 perf_counts_values__scale(count, scale, NULL);
450 evsel->counts->cpu[cpu] = *count;
451 if (aggr_mode == AGGR_NONE)
452 update_shadow_stats(evsel, count->values, cpu);
453 break;
454 case AGGR_GLOBAL:
455 aggr->val += count->val;
456 if (scale) {
457 aggr->ena += count->ena;
458 aggr->run += count->run;
459 }
460 default:
461 break;
462 }
463
464 return 0;
465 }
466
467 static int read_counter(struct perf_evsel *counter);
468
469 /*
470 * Read out the results of a single counter:
471 * aggregate counts across CPUs in system-wide mode
472 */
473 static int read_counter_aggr(struct perf_evsel *counter)
474 {
475 struct perf_counts_values *aggr = &counter->counts->aggr;
476 struct perf_stat *ps = counter->priv;
477 u64 *count = counter->counts->aggr.values;
478 int i;
479
480 aggr->val = aggr->ena = aggr->run = 0;
481
482 if (read_counter(counter))
483 return -1;
484
485 if (!counter->snapshot)
486 perf_evsel__compute_deltas(counter, -1, aggr);
487 perf_counts_values__scale(aggr, scale, &counter->counts->scaled);
488
489 for (i = 0; i < 3; i++)
490 update_stats(&ps->res_stats[i], count[i]);
491
492 if (verbose) {
493 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
494 perf_evsel__name(counter), count[0], count[1], count[2]);
495 }
496
497 /*
498 * Save the full runtime - to allow normalization during printout:
499 */
500 update_shadow_stats(counter, count, 0);
501
502 return 0;
503 }
504
505 /*
506 * Read out the results of a single counter:
507 * do not aggregate counts across CPUs in system-wide mode
508 */
509 static int read_counter(struct perf_evsel *counter)
510 {
511 int nthreads = thread_map__nr(evsel_list->threads);
512 int ncpus = perf_evsel__nr_cpus(counter);
513 int cpu, thread;
514
515 if (!counter->supported)
516 return -ENOENT;
517
518 if (counter->system_wide)
519 nthreads = 1;
520
521 if (counter->per_pkg)
522 zero_per_pkg(counter);
523
524 for (thread = 0; thread < nthreads; thread++) {
525 for (cpu = 0; cpu < ncpus; cpu++) {
526 if (perf_evsel__read_cb(counter, cpu, thread, read_cb))
527 return -1;
528 }
529 }
530
531 return 0;
532 }
533
534 static void print_interval(void)
535 {
536 static int num_print_interval;
537 struct perf_evsel *counter;
538 struct perf_stat *ps;
539 struct timespec ts, rs;
540 char prefix[64];
541
542 if (aggr_mode == AGGR_GLOBAL) {
543 evlist__for_each(evsel_list, counter) {
544 ps = counter->priv;
545 memset(ps->res_stats, 0, sizeof(ps->res_stats));
546 read_counter_aggr(counter);
547 }
548 } else {
549 evlist__for_each(evsel_list, counter) {
550 ps = counter->priv;
551 memset(ps->res_stats, 0, sizeof(ps->res_stats));
552 read_counter(counter);
553 }
554 }
555
556 clock_gettime(CLOCK_MONOTONIC, &ts);
557 diff_timespec(&rs, &ts, &ref_time);
558 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
559
560 if (num_print_interval == 0 && !csv_output) {
561 switch (aggr_mode) {
562 case AGGR_SOCKET:
563 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
564 break;
565 case AGGR_CORE:
566 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
567 break;
568 case AGGR_NONE:
569 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
570 break;
571 case AGGR_GLOBAL:
572 default:
573 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
574 }
575 }
576
577 if (++num_print_interval == 25)
578 num_print_interval = 0;
579
580 switch (aggr_mode) {
581 case AGGR_CORE:
582 case AGGR_SOCKET:
583 print_aggr(prefix);
584 break;
585 case AGGR_NONE:
586 evlist__for_each(evsel_list, counter)
587 print_counter(counter, prefix);
588 break;
589 case AGGR_GLOBAL:
590 default:
591 evlist__for_each(evsel_list, counter)
592 print_counter_aggr(counter, prefix);
593 }
594
595 fflush(output);
596 }
597
598 static void handle_initial_delay(void)
599 {
600 struct perf_evsel *counter;
601
602 if (initial_delay) {
603 const int ncpus = cpu_map__nr(evsel_list->cpus),
604 nthreads = thread_map__nr(evsel_list->threads);
605
606 usleep(initial_delay * 1000);
607 evlist__for_each(evsel_list, counter)
608 perf_evsel__enable(counter, ncpus, nthreads);
609 }
610 }
611
612 static volatile int workload_exec_errno;
613
614 /*
615 * perf_evlist__prepare_workload will send a SIGUSR1
616 * if the fork fails, since we asked by setting its
617 * want_signal to true.
618 */
619 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
620 void *ucontext __maybe_unused)
621 {
622 workload_exec_errno = info->si_value.sival_int;
623 }
624
625 static int __run_perf_stat(int argc, const char **argv)
626 {
627 char msg[512];
628 unsigned long long t0, t1;
629 struct perf_evsel *counter;
630 struct timespec ts;
631 size_t l;
632 int status = 0;
633 const bool forks = (argc > 0);
634
635 if (interval) {
636 ts.tv_sec = interval / 1000;
637 ts.tv_nsec = (interval % 1000) * 1000000;
638 } else {
639 ts.tv_sec = 1;
640 ts.tv_nsec = 0;
641 }
642
643 if (forks) {
644 if (perf_evlist__prepare_workload(evsel_list, &target, argv, false,
645 workload_exec_failed_signal) < 0) {
646 perror("failed to prepare workload");
647 return -1;
648 }
649 child_pid = evsel_list->workload.pid;
650 }
651
652 if (group)
653 perf_evlist__set_leader(evsel_list);
654
655 evlist__for_each(evsel_list, counter) {
656 if (create_perf_stat_counter(counter) < 0) {
657 /*
658 * PPC returns ENXIO for HW counters until 2.6.37
659 * (behavior changed with commit b0a873e).
660 */
661 if (errno == EINVAL || errno == ENOSYS ||
662 errno == ENOENT || errno == EOPNOTSUPP ||
663 errno == ENXIO) {
664 if (verbose)
665 ui__warning("%s event is not supported by the kernel.\n",
666 perf_evsel__name(counter));
667 counter->supported = false;
668 continue;
669 }
670
671 perf_evsel__open_strerror(counter, &target,
672 errno, msg, sizeof(msg));
673 ui__error("%s\n", msg);
674
675 if (child_pid != -1)
676 kill(child_pid, SIGTERM);
677
678 return -1;
679 }
680 counter->supported = true;
681
682 l = strlen(counter->unit);
683 if (l > unit_width)
684 unit_width = l;
685 }
686
687 if (perf_evlist__apply_filters(evsel_list, &counter)) {
688 error("failed to set filter \"%s\" on event %s with %d (%s)\n",
689 counter->filter, perf_evsel__name(counter), errno,
690 strerror_r(errno, msg, sizeof(msg)));
691 return -1;
692 }
693
694 /*
695 * Enable counters and exec the command:
696 */
697 t0 = rdclock();
698 clock_gettime(CLOCK_MONOTONIC, &ref_time);
699
700 if (forks) {
701 perf_evlist__start_workload(evsel_list);
702 handle_initial_delay();
703
704 if (interval) {
705 while (!waitpid(child_pid, &status, WNOHANG)) {
706 nanosleep(&ts, NULL);
707 print_interval();
708 }
709 }
710 wait(&status);
711
712 if (workload_exec_errno) {
713 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
714 pr_err("Workload failed: %s\n", emsg);
715 return -1;
716 }
717
718 if (WIFSIGNALED(status))
719 psignal(WTERMSIG(status), argv[0]);
720 } else {
721 handle_initial_delay();
722 while (!done) {
723 nanosleep(&ts, NULL);
724 if (interval)
725 print_interval();
726 }
727 }
728
729 t1 = rdclock();
730
731 update_stats(&walltime_nsecs_stats, t1 - t0);
732
733 if (aggr_mode == AGGR_GLOBAL) {
734 evlist__for_each(evsel_list, counter) {
735 read_counter_aggr(counter);
736 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
737 thread_map__nr(evsel_list->threads));
738 }
739 } else {
740 evlist__for_each(evsel_list, counter) {
741 read_counter(counter);
742 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
743 }
744 }
745
746 return WEXITSTATUS(status);
747 }
748
749 static int run_perf_stat(int argc, const char **argv)
750 {
751 int ret;
752
753 if (pre_cmd) {
754 ret = system(pre_cmd);
755 if (ret)
756 return ret;
757 }
758
759 if (sync_run)
760 sync();
761
762 ret = __run_perf_stat(argc, argv);
763 if (ret)
764 return ret;
765
766 if (post_cmd) {
767 ret = system(post_cmd);
768 if (ret)
769 return ret;
770 }
771
772 return ret;
773 }
774
775 static void print_running(u64 run, u64 ena)
776 {
777 if (csv_output) {
778 fprintf(output, "%s%" PRIu64 "%s%.2f",
779 csv_sep,
780 run,
781 csv_sep,
782 ena ? 100.0 * run / ena : 100.0);
783 } else if (run != ena) {
784 fprintf(output, " (%.2f%%)", 100.0 * run / ena);
785 }
786 }
787
788 static void print_noise_pct(double total, double avg)
789 {
790 double pct = rel_stddev_stats(total, avg);
791
792 if (csv_output)
793 fprintf(output, "%s%.2f%%", csv_sep, pct);
794 else if (pct)
795 fprintf(output, " ( +-%6.2f%% )", pct);
796 }
797
798 static void print_noise(struct perf_evsel *evsel, double avg)
799 {
800 struct perf_stat *ps;
801
802 if (run_count == 1)
803 return;
804
805 ps = evsel->priv;
806 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
807 }
808
809 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
810 {
811 switch (aggr_mode) {
812 case AGGR_CORE:
813 fprintf(output, "S%d-C%*d%s%*d%s",
814 cpu_map__id_to_socket(id),
815 csv_output ? 0 : -8,
816 cpu_map__id_to_cpu(id),
817 csv_sep,
818 csv_output ? 0 : 4,
819 nr,
820 csv_sep);
821 break;
822 case AGGR_SOCKET:
823 fprintf(output, "S%*d%s%*d%s",
824 csv_output ? 0 : -5,
825 id,
826 csv_sep,
827 csv_output ? 0 : 4,
828 nr,
829 csv_sep);
830 break;
831 case AGGR_NONE:
832 fprintf(output, "CPU%*d%s",
833 csv_output ? 0 : -4,
834 perf_evsel__cpus(evsel)->map[id], csv_sep);
835 break;
836 case AGGR_GLOBAL:
837 default:
838 break;
839 }
840 }
841
842 static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
843 {
844 double msecs = avg / 1e6;
845 const char *fmt_v, *fmt_n;
846 char name[25];
847
848 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
849 fmt_n = csv_output ? "%s" : "%-25s";
850
851 aggr_printout(evsel, id, nr);
852
853 scnprintf(name, sizeof(name), "%s%s",
854 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
855
856 fprintf(output, fmt_v, msecs, csv_sep);
857
858 if (csv_output)
859 fprintf(output, "%s%s", evsel->unit, csv_sep);
860 else
861 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
862
863 fprintf(output, fmt_n, name);
864
865 if (evsel->cgrp)
866 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
867
868 if (csv_output || interval)
869 return;
870
871 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
872 fprintf(output, " # %8.3f CPUs utilized ",
873 avg / avg_stats(&walltime_nsecs_stats));
874 else
875 fprintf(output, " ");
876 }
877
878 /* used for get_ratio_color() */
879 enum grc_type {
880 GRC_STALLED_CYCLES_FE,
881 GRC_STALLED_CYCLES_BE,
882 GRC_CACHE_MISSES,
883 GRC_MAX_NR
884 };
885
886 static const char *get_ratio_color(enum grc_type type, double ratio)
887 {
888 static const double grc_table[GRC_MAX_NR][3] = {
889 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
890 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
891 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
892 };
893 const char *color = PERF_COLOR_NORMAL;
894
895 if (ratio > grc_table[type][0])
896 color = PERF_COLOR_RED;
897 else if (ratio > grc_table[type][1])
898 color = PERF_COLOR_MAGENTA;
899 else if (ratio > grc_table[type][2])
900 color = PERF_COLOR_YELLOW;
901
902 return color;
903 }
904
905 static void print_stalled_cycles_frontend(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_FE, ratio);
918
919 fprintf(output, " # ");
920 color_fprintf(output, color, "%6.2f%%", ratio);
921 fprintf(output, " frontend cycles idle ");
922 }
923
924 static void print_stalled_cycles_backend(int cpu,
925 struct perf_evsel *evsel
926 __maybe_unused, double avg)
927 {
928 double total, ratio = 0.0;
929 const char *color;
930
931 total = avg_stats(&runtime_cycles_stats[cpu]);
932
933 if (total)
934 ratio = avg / total * 100.0;
935
936 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
937
938 fprintf(output, " # ");
939 color_fprintf(output, color, "%6.2f%%", ratio);
940 fprintf(output, " backend cycles idle ");
941 }
942
943 static void print_branch_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_branches_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 branches ");
960 }
961
962 static void print_l1_dcache_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_dcache_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-dcache hits ");
979 }
980
981 static void print_l1_icache_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_l1_icache_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 L1-icache hits ");
998 }
999
1000 static void print_dtlb_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_dtlb_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 dTLB cache hits ");
1017 }
1018
1019 static void print_itlb_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_itlb_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 iTLB cache hits ");
1036 }
1037
1038 static void print_ll_cache_misses(int cpu,
1039 struct perf_evsel *evsel __maybe_unused,
1040 double avg)
1041 {
1042 double total, ratio = 0.0;
1043 const char *color;
1044
1045 total = avg_stats(&runtime_ll_cache_stats[cpu]);
1046
1047 if (total)
1048 ratio = avg / total * 100.0;
1049
1050 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
1051
1052 fprintf(output, " # ");
1053 color_fprintf(output, color, "%6.2f%%", ratio);
1054 fprintf(output, " of all LL-cache hits ");
1055 }
1056
1057 static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
1058 {
1059 double total, ratio = 0.0, total2;
1060 double sc = evsel->scale;
1061 const char *fmt;
1062 int cpu = cpu_map__id_to_cpu(id);
1063
1064 if (csv_output) {
1065 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
1066 } else {
1067 if (big_num)
1068 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
1069 else
1070 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
1071 }
1072
1073 aggr_printout(evsel, id, nr);
1074
1075 if (aggr_mode == AGGR_GLOBAL)
1076 cpu = 0;
1077
1078 fprintf(output, fmt, avg, csv_sep);
1079
1080 if (evsel->unit)
1081 fprintf(output, "%-*s%s",
1082 csv_output ? 0 : unit_width,
1083 evsel->unit, csv_sep);
1084
1085 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
1086
1087 if (evsel->cgrp)
1088 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
1089
1090 if (csv_output || interval)
1091 return;
1092
1093 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
1094 total = avg_stats(&runtime_cycles_stats[cpu]);
1095 if (total) {
1096 ratio = avg / total;
1097 fprintf(output, " # %5.2f insns per cycle ", ratio);
1098 } else {
1099 fprintf(output, " ");
1100 }
1101 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
1102 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
1103
1104 if (total && avg) {
1105 ratio = total / avg;
1106 fprintf(output, "\n");
1107 if (aggr_mode == AGGR_NONE)
1108 fprintf(output, " ");
1109 fprintf(output, " # %5.2f stalled cycles per insn", ratio);
1110 }
1111
1112 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
1113 runtime_branches_stats[cpu].n != 0) {
1114 print_branch_misses(cpu, evsel, avg);
1115 } else if (
1116 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1117 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
1118 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1119 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1120 runtime_l1_dcache_stats[cpu].n != 0) {
1121 print_l1_dcache_misses(cpu, evsel, avg);
1122 } else if (
1123 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1124 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
1125 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1126 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1127 runtime_l1_icache_stats[cpu].n != 0) {
1128 print_l1_icache_misses(cpu, evsel, avg);
1129 } else if (
1130 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1131 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
1132 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1133 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1134 runtime_dtlb_cache_stats[cpu].n != 0) {
1135 print_dtlb_cache_misses(cpu, evsel, avg);
1136 } else if (
1137 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1138 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
1139 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1140 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1141 runtime_itlb_cache_stats[cpu].n != 0) {
1142 print_itlb_cache_misses(cpu, evsel, avg);
1143 } else if (
1144 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1145 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
1146 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1147 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1148 runtime_ll_cache_stats[cpu].n != 0) {
1149 print_ll_cache_misses(cpu, evsel, avg);
1150 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
1151 runtime_cacherefs_stats[cpu].n != 0) {
1152 total = avg_stats(&runtime_cacherefs_stats[cpu]);
1153
1154 if (total)
1155 ratio = avg * 100 / total;
1156
1157 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
1158
1159 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
1160 print_stalled_cycles_frontend(cpu, evsel, avg);
1161 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
1162 print_stalled_cycles_backend(cpu, evsel, avg);
1163 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
1164 total = avg_stats(&runtime_nsecs_stats[cpu]);
1165
1166 if (total) {
1167 ratio = avg / total;
1168 fprintf(output, " # %8.3f GHz ", ratio);
1169 } else {
1170 fprintf(output, " ");
1171 }
1172 } else if (transaction_run &&
1173 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1174 total = avg_stats(&runtime_cycles_stats[cpu]);
1175 if (total)
1176 fprintf(output,
1177 " # %5.2f%% transactional cycles ",
1178 100.0 * (avg / total));
1179 } else if (transaction_run &&
1180 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1181 total = avg_stats(&runtime_cycles_stats[cpu]);
1182 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1183 if (total2 < avg)
1184 total2 = avg;
1185 if (total)
1186 fprintf(output,
1187 " # %5.2f%% aborted cycles ",
1188 100.0 * ((total2-avg) / total));
1189 } else if (transaction_run &&
1190 perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1191 avg > 0 &&
1192 runtime_cycles_in_tx_stats[cpu].n != 0) {
1193 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1194
1195 if (total)
1196 ratio = total / avg;
1197
1198 fprintf(output, " # %8.0f cycles / transaction ", ratio);
1199 } else if (transaction_run &&
1200 perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1201 avg > 0 &&
1202 runtime_cycles_in_tx_stats[cpu].n != 0) {
1203 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1204
1205 if (total)
1206 ratio = total / avg;
1207
1208 fprintf(output, " # %8.0f cycles / elision ", ratio);
1209 } else if (runtime_nsecs_stats[cpu].n != 0) {
1210 char unit = 'M';
1211
1212 total = avg_stats(&runtime_nsecs_stats[cpu]);
1213
1214 if (total)
1215 ratio = 1000.0 * avg / total;
1216 if (ratio < 0.001) {
1217 ratio *= 1000;
1218 unit = 'K';
1219 }
1220
1221 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
1222 } else {
1223 fprintf(output, " ");
1224 }
1225 }
1226
1227 static void print_aggr(char *prefix)
1228 {
1229 struct perf_evsel *counter;
1230 int cpu, cpu2, s, s2, id, nr;
1231 double uval;
1232 u64 ena, run, val;
1233
1234 if (!(aggr_map || aggr_get_id))
1235 return;
1236
1237 for (s = 0; s < aggr_map->nr; s++) {
1238 id = aggr_map->map[s];
1239 evlist__for_each(evsel_list, counter) {
1240 val = ena = run = 0;
1241 nr = 0;
1242 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1243 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1244 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1245 if (s2 != id)
1246 continue;
1247 val += counter->counts->cpu[cpu].val;
1248 ena += counter->counts->cpu[cpu].ena;
1249 run += counter->counts->cpu[cpu].run;
1250 nr++;
1251 }
1252 if (prefix)
1253 fprintf(output, "%s", prefix);
1254
1255 if (run == 0 || ena == 0) {
1256 aggr_printout(counter, id, nr);
1257
1258 fprintf(output, "%*s%s",
1259 csv_output ? 0 : 18,
1260 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1261 csv_sep);
1262
1263 fprintf(output, "%-*s%s",
1264 csv_output ? 0 : unit_width,
1265 counter->unit, csv_sep);
1266
1267 fprintf(output, "%*s",
1268 csv_output ? 0 : -25,
1269 perf_evsel__name(counter));
1270
1271 if (counter->cgrp)
1272 fprintf(output, "%s%s",
1273 csv_sep, counter->cgrp->name);
1274
1275 print_running(run, ena);
1276 fputc('\n', output);
1277 continue;
1278 }
1279 uval = val * counter->scale;
1280
1281 if (nsec_counter(counter))
1282 nsec_printout(id, nr, counter, uval);
1283 else
1284 abs_printout(id, nr, counter, uval);
1285
1286 if (!csv_output)
1287 print_noise(counter, 1.0);
1288
1289 print_running(run, ena);
1290 fputc('\n', output);
1291 }
1292 }
1293 }
1294
1295 /*
1296 * Print out the results of a single counter:
1297 * aggregated counts in system-wide mode
1298 */
1299 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1300 {
1301 struct perf_stat *ps = counter->priv;
1302 double avg = avg_stats(&ps->res_stats[0]);
1303 int scaled = counter->counts->scaled;
1304 double uval;
1305 double avg_enabled, avg_running;
1306
1307 avg_enabled = avg_stats(&ps->res_stats[1]);
1308 avg_running = avg_stats(&ps->res_stats[2]);
1309
1310 if (prefix)
1311 fprintf(output, "%s", prefix);
1312
1313 if (scaled == -1 || !counter->supported) {
1314 fprintf(output, "%*s%s",
1315 csv_output ? 0 : 18,
1316 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1317 csv_sep);
1318 fprintf(output, "%-*s%s",
1319 csv_output ? 0 : unit_width,
1320 counter->unit, csv_sep);
1321 fprintf(output, "%*s",
1322 csv_output ? 0 : -25,
1323 perf_evsel__name(counter));
1324
1325 if (counter->cgrp)
1326 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1327
1328 print_running(avg_running, avg_enabled);
1329 fputc('\n', output);
1330 return;
1331 }
1332
1333 uval = avg * counter->scale;
1334
1335 if (nsec_counter(counter))
1336 nsec_printout(-1, 0, counter, uval);
1337 else
1338 abs_printout(-1, 0, counter, uval);
1339
1340 print_noise(counter, avg);
1341
1342 print_running(avg_running, avg_enabled);
1343 fprintf(output, "\n");
1344 }
1345
1346 /*
1347 * Print out the results of a single counter:
1348 * does not use aggregated count in system-wide
1349 */
1350 static void print_counter(struct perf_evsel *counter, char *prefix)
1351 {
1352 u64 ena, run, val;
1353 double uval;
1354 int cpu;
1355
1356 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1357 val = counter->counts->cpu[cpu].val;
1358 ena = counter->counts->cpu[cpu].ena;
1359 run = counter->counts->cpu[cpu].run;
1360
1361 if (prefix)
1362 fprintf(output, "%s", prefix);
1363
1364 if (run == 0 || ena == 0) {
1365 fprintf(output, "CPU%*d%s%*s%s",
1366 csv_output ? 0 : -4,
1367 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1368 csv_output ? 0 : 18,
1369 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1370 csv_sep);
1371
1372 fprintf(output, "%-*s%s",
1373 csv_output ? 0 : unit_width,
1374 counter->unit, csv_sep);
1375
1376 fprintf(output, "%*s",
1377 csv_output ? 0 : -25,
1378 perf_evsel__name(counter));
1379
1380 if (counter->cgrp)
1381 fprintf(output, "%s%s",
1382 csv_sep, counter->cgrp->name);
1383
1384 print_running(run, ena);
1385 fputc('\n', output);
1386 continue;
1387 }
1388
1389 uval = val * counter->scale;
1390
1391 if (nsec_counter(counter))
1392 nsec_printout(cpu, 0, counter, uval);
1393 else
1394 abs_printout(cpu, 0, counter, uval);
1395
1396 if (!csv_output)
1397 print_noise(counter, 1.0);
1398 print_running(run, ena);
1399
1400 fputc('\n', output);
1401 }
1402 }
1403
1404 static void print_stat(int argc, const char **argv)
1405 {
1406 struct perf_evsel *counter;
1407 int i;
1408
1409 fflush(stdout);
1410
1411 if (!csv_output) {
1412 fprintf(output, "\n");
1413 fprintf(output, " Performance counter stats for ");
1414 if (target.system_wide)
1415 fprintf(output, "\'system wide");
1416 else if (target.cpu_list)
1417 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1418 else if (!target__has_task(&target)) {
1419 fprintf(output, "\'%s", argv[0]);
1420 for (i = 1; i < argc; i++)
1421 fprintf(output, " %s", argv[i]);
1422 } else if (target.pid)
1423 fprintf(output, "process id \'%s", target.pid);
1424 else
1425 fprintf(output, "thread id \'%s", target.tid);
1426
1427 fprintf(output, "\'");
1428 if (run_count > 1)
1429 fprintf(output, " (%d runs)", run_count);
1430 fprintf(output, ":\n\n");
1431 }
1432
1433 switch (aggr_mode) {
1434 case AGGR_CORE:
1435 case AGGR_SOCKET:
1436 print_aggr(NULL);
1437 break;
1438 case AGGR_GLOBAL:
1439 evlist__for_each(evsel_list, counter)
1440 print_counter_aggr(counter, NULL);
1441 break;
1442 case AGGR_NONE:
1443 evlist__for_each(evsel_list, counter)
1444 print_counter(counter, NULL);
1445 break;
1446 default:
1447 break;
1448 }
1449
1450 if (!csv_output) {
1451 if (!null_run)
1452 fprintf(output, "\n");
1453 fprintf(output, " %17.9f seconds time elapsed",
1454 avg_stats(&walltime_nsecs_stats)/1e9);
1455 if (run_count > 1) {
1456 fprintf(output, " ");
1457 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1458 avg_stats(&walltime_nsecs_stats));
1459 }
1460 fprintf(output, "\n\n");
1461 }
1462 }
1463
1464 static volatile int signr = -1;
1465
1466 static void skip_signal(int signo)
1467 {
1468 if ((child_pid == -1) || interval)
1469 done = 1;
1470
1471 signr = signo;
1472 /*
1473 * render child_pid harmless
1474 * won't send SIGTERM to a random
1475 * process in case of race condition
1476 * and fast PID recycling
1477 */
1478 child_pid = -1;
1479 }
1480
1481 static void sig_atexit(void)
1482 {
1483 sigset_t set, oset;
1484
1485 /*
1486 * avoid race condition with SIGCHLD handler
1487 * in skip_signal() which is modifying child_pid
1488 * goal is to avoid send SIGTERM to a random
1489 * process
1490 */
1491 sigemptyset(&set);
1492 sigaddset(&set, SIGCHLD);
1493 sigprocmask(SIG_BLOCK, &set, &oset);
1494
1495 if (child_pid != -1)
1496 kill(child_pid, SIGTERM);
1497
1498 sigprocmask(SIG_SETMASK, &oset, NULL);
1499
1500 if (signr == -1)
1501 return;
1502
1503 signal(signr, SIG_DFL);
1504 kill(getpid(), signr);
1505 }
1506
1507 static int stat__set_big_num(const struct option *opt __maybe_unused,
1508 const char *s __maybe_unused, int unset)
1509 {
1510 big_num_opt = unset ? 0 : 1;
1511 return 0;
1512 }
1513
1514 static int perf_stat_init_aggr_mode(void)
1515 {
1516 switch (aggr_mode) {
1517 case AGGR_SOCKET:
1518 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1519 perror("cannot build socket map");
1520 return -1;
1521 }
1522 aggr_get_id = cpu_map__get_socket;
1523 break;
1524 case AGGR_CORE:
1525 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1526 perror("cannot build core map");
1527 return -1;
1528 }
1529 aggr_get_id = cpu_map__get_core;
1530 break;
1531 case AGGR_NONE:
1532 case AGGR_GLOBAL:
1533 default:
1534 break;
1535 }
1536 return 0;
1537 }
1538
1539 static int setup_events(const char * const *attrs, unsigned len)
1540 {
1541 unsigned i;
1542
1543 for (i = 0; i < len; i++) {
1544 if (parse_events(evsel_list, attrs[i]))
1545 return -1;
1546 }
1547 return 0;
1548 }
1549
1550 /*
1551 * Add default attributes, if there were no attributes specified or
1552 * if -d/--detailed, -d -d or -d -d -d is used:
1553 */
1554 static int add_default_attributes(void)
1555 {
1556 struct perf_event_attr default_attrs[] = {
1557
1558 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1559 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1560 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1561 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1562
1563 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1564 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1565 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1566 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1567 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1568 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1569
1570 };
1571
1572 /*
1573 * Detailed stats (-d), covering the L1 and last level data caches:
1574 */
1575 struct perf_event_attr detailed_attrs[] = {
1576
1577 { .type = PERF_TYPE_HW_CACHE,
1578 .config =
1579 PERF_COUNT_HW_CACHE_L1D << 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_L1D << 0 |
1586 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1587 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1588
1589 { .type = PERF_TYPE_HW_CACHE,
1590 .config =
1591 PERF_COUNT_HW_CACHE_LL << 0 |
1592 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1593 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1594
1595 { .type = PERF_TYPE_HW_CACHE,
1596 .config =
1597 PERF_COUNT_HW_CACHE_LL << 0 |
1598 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1599 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1600 };
1601
1602 /*
1603 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1604 */
1605 struct perf_event_attr very_detailed_attrs[] = {
1606
1607 { .type = PERF_TYPE_HW_CACHE,
1608 .config =
1609 PERF_COUNT_HW_CACHE_L1I << 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_L1I << 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_DTLB << 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_DTLB << 0 |
1628 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1629 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1630
1631 { .type = PERF_TYPE_HW_CACHE,
1632 .config =
1633 PERF_COUNT_HW_CACHE_ITLB << 0 |
1634 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1635 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1636
1637 { .type = PERF_TYPE_HW_CACHE,
1638 .config =
1639 PERF_COUNT_HW_CACHE_ITLB << 0 |
1640 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1641 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1642
1643 };
1644
1645 /*
1646 * Very, very detailed stats (-d -d -d), adding prefetch events:
1647 */
1648 struct perf_event_attr very_very_detailed_attrs[] = {
1649
1650 { .type = PERF_TYPE_HW_CACHE,
1651 .config =
1652 PERF_COUNT_HW_CACHE_L1D << 0 |
1653 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1654 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1655
1656 { .type = PERF_TYPE_HW_CACHE,
1657 .config =
1658 PERF_COUNT_HW_CACHE_L1D << 0 |
1659 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1660 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1661 };
1662
1663 /* Set attrs if no event is selected and !null_run: */
1664 if (null_run)
1665 return 0;
1666
1667 if (transaction_run) {
1668 int err;
1669 if (pmu_have_event("cpu", "cycles-ct") &&
1670 pmu_have_event("cpu", "el-start"))
1671 err = setup_events(transaction_attrs,
1672 ARRAY_SIZE(transaction_attrs));
1673 else
1674 err = setup_events(transaction_limited_attrs,
1675 ARRAY_SIZE(transaction_limited_attrs));
1676 if (err < 0) {
1677 fprintf(stderr, "Cannot set up transaction events\n");
1678 return -1;
1679 }
1680 return 0;
1681 }
1682
1683 if (!evsel_list->nr_entries) {
1684 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1685 return -1;
1686 }
1687
1688 /* Detailed events get appended to the event list: */
1689
1690 if (detailed_run < 1)
1691 return 0;
1692
1693 /* Append detailed run extra attributes: */
1694 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1695 return -1;
1696
1697 if (detailed_run < 2)
1698 return 0;
1699
1700 /* Append very detailed run extra attributes: */
1701 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1702 return -1;
1703
1704 if (detailed_run < 3)
1705 return 0;
1706
1707 /* Append very, very detailed run extra attributes: */
1708 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1709 }
1710
1711 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1712 {
1713 bool append_file = false;
1714 int output_fd = 0;
1715 const char *output_name = NULL;
1716 const struct option options[] = {
1717 OPT_BOOLEAN('T', "transaction", &transaction_run,
1718 "hardware transaction statistics"),
1719 OPT_CALLBACK('e', "event", &evsel_list, "event",
1720 "event selector. use 'perf list' to list available events",
1721 parse_events_option),
1722 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1723 "event filter", parse_filter),
1724 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1725 "child tasks do not inherit counters"),
1726 OPT_STRING('p', "pid", &target.pid, "pid",
1727 "stat events on existing process id"),
1728 OPT_STRING('t', "tid", &target.tid, "tid",
1729 "stat events on existing thread id"),
1730 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1731 "system-wide collection from all CPUs"),
1732 OPT_BOOLEAN('g', "group", &group,
1733 "put the counters into a counter group"),
1734 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1735 OPT_INCR('v', "verbose", &verbose,
1736 "be more verbose (show counter open errors, etc)"),
1737 OPT_INTEGER('r', "repeat", &run_count,
1738 "repeat command and print average + stddev (max: 100, forever: 0)"),
1739 OPT_BOOLEAN('n', "null", &null_run,
1740 "null run - dont start any counters"),
1741 OPT_INCR('d', "detailed", &detailed_run,
1742 "detailed run - start a lot of events"),
1743 OPT_BOOLEAN('S', "sync", &sync_run,
1744 "call sync() before starting a run"),
1745 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1746 "print large numbers with thousands\' separators",
1747 stat__set_big_num),
1748 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1749 "list of cpus to monitor in system-wide"),
1750 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1751 "disable CPU count aggregation", AGGR_NONE),
1752 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1753 "print counts with custom separator"),
1754 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1755 "monitor event in cgroup name only", parse_cgroups),
1756 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1757 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1758 OPT_INTEGER(0, "log-fd", &output_fd,
1759 "log output to fd, instead of stderr"),
1760 OPT_STRING(0, "pre", &pre_cmd, "command",
1761 "command to run prior to the measured command"),
1762 OPT_STRING(0, "post", &post_cmd, "command",
1763 "command to run after to the measured command"),
1764 OPT_UINTEGER('I', "interval-print", &interval,
1765 "print counts at regular interval in ms (>= 100)"),
1766 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1767 "aggregate counts per processor socket", AGGR_SOCKET),
1768 OPT_SET_UINT(0, "per-core", &aggr_mode,
1769 "aggregate counts per physical processor core", AGGR_CORE),
1770 OPT_UINTEGER('D', "delay", &initial_delay,
1771 "ms to wait before starting measurement after program start"),
1772 OPT_END()
1773 };
1774 const char * const stat_usage[] = {
1775 "perf stat [<options>] [<command>]",
1776 NULL
1777 };
1778 int status = -EINVAL, run_idx;
1779 const char *mode;
1780
1781 setlocale(LC_ALL, "");
1782
1783 evsel_list = perf_evlist__new();
1784 if (evsel_list == NULL)
1785 return -ENOMEM;
1786
1787 argc = parse_options(argc, argv, options, stat_usage,
1788 PARSE_OPT_STOP_AT_NON_OPTION);
1789
1790 output = stderr;
1791 if (output_name && strcmp(output_name, "-"))
1792 output = NULL;
1793
1794 if (output_name && output_fd) {
1795 fprintf(stderr, "cannot use both --output and --log-fd\n");
1796 parse_options_usage(stat_usage, options, "o", 1);
1797 parse_options_usage(NULL, options, "log-fd", 0);
1798 goto out;
1799 }
1800
1801 if (output_fd < 0) {
1802 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1803 parse_options_usage(stat_usage, options, "log-fd", 0);
1804 goto out;
1805 }
1806
1807 if (!output) {
1808 struct timespec tm;
1809 mode = append_file ? "a" : "w";
1810
1811 output = fopen(output_name, mode);
1812 if (!output) {
1813 perror("failed to create output file");
1814 return -1;
1815 }
1816 clock_gettime(CLOCK_REALTIME, &tm);
1817 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1818 } else if (output_fd > 0) {
1819 mode = append_file ? "a" : "w";
1820 output = fdopen(output_fd, mode);
1821 if (!output) {
1822 perror("Failed opening logfd");
1823 return -errno;
1824 }
1825 }
1826
1827 if (csv_sep) {
1828 csv_output = true;
1829 if (!strcmp(csv_sep, "\\t"))
1830 csv_sep = "\t";
1831 } else
1832 csv_sep = DEFAULT_SEPARATOR;
1833
1834 /*
1835 * let the spreadsheet do the pretty-printing
1836 */
1837 if (csv_output) {
1838 /* User explicitly passed -B? */
1839 if (big_num_opt == 1) {
1840 fprintf(stderr, "-B option not supported with -x\n");
1841 parse_options_usage(stat_usage, options, "B", 1);
1842 parse_options_usage(NULL, options, "x", 1);
1843 goto out;
1844 } else /* Nope, so disable big number formatting */
1845 big_num = false;
1846 } else if (big_num_opt == 0) /* User passed --no-big-num */
1847 big_num = false;
1848
1849 if (!argc && target__none(&target))
1850 usage_with_options(stat_usage, options);
1851
1852 if (run_count < 0) {
1853 pr_err("Run count must be a positive number\n");
1854 parse_options_usage(stat_usage, options, "r", 1);
1855 goto out;
1856 } else if (run_count == 0) {
1857 forever = true;
1858 run_count = 1;
1859 }
1860
1861 /* no_aggr, cgroup are for system-wide only */
1862 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
1863 !target__has_cpu(&target)) {
1864 fprintf(stderr, "both cgroup and no-aggregation "
1865 "modes only available in system-wide mode\n");
1866
1867 parse_options_usage(stat_usage, options, "G", 1);
1868 parse_options_usage(NULL, options, "A", 1);
1869 parse_options_usage(NULL, options, "a", 1);
1870 goto out;
1871 }
1872
1873 if (add_default_attributes())
1874 goto out;
1875
1876 target__validate(&target);
1877
1878 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1879 if (target__has_task(&target)) {
1880 pr_err("Problems finding threads of monitor\n");
1881 parse_options_usage(stat_usage, options, "p", 1);
1882 parse_options_usage(NULL, options, "t", 1);
1883 } else if (target__has_cpu(&target)) {
1884 perror("failed to parse CPUs map");
1885 parse_options_usage(stat_usage, options, "C", 1);
1886 parse_options_usage(NULL, options, "a", 1);
1887 }
1888 goto out;
1889 }
1890 if (interval && interval < 100) {
1891 pr_err("print interval must be >= 100ms\n");
1892 parse_options_usage(stat_usage, options, "I", 1);
1893 goto out;
1894 }
1895
1896 if (perf_evlist__alloc_stats(evsel_list, interval))
1897 goto out;
1898
1899 if (perf_stat_init_aggr_mode())
1900 goto out;
1901
1902 /*
1903 * We dont want to block the signals - that would cause
1904 * child tasks to inherit that and Ctrl-C would not work.
1905 * What we want is for Ctrl-C to work in the exec()-ed
1906 * task, but being ignored by perf stat itself:
1907 */
1908 atexit(sig_atexit);
1909 if (!forever)
1910 signal(SIGINT, skip_signal);
1911 signal(SIGCHLD, skip_signal);
1912 signal(SIGALRM, skip_signal);
1913 signal(SIGABRT, skip_signal);
1914
1915 status = 0;
1916 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1917 if (run_count != 1 && verbose)
1918 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1919 run_idx + 1);
1920
1921 status = run_perf_stat(argc, argv);
1922 if (forever && status != -1) {
1923 print_stat(argc, argv);
1924 perf_stat__reset_stats(evsel_list);
1925 }
1926 }
1927
1928 if (!forever && status != -1 && !interval)
1929 print_stat(argc, argv);
1930
1931 perf_evlist__free_stats(evsel_list);
1932 out:
1933 perf_evlist__delete(evsel_list);
1934 return status;
1935 }
Ubuntu Artful kernel mirror