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Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[deliverable/linux.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/util.h"
47 #include "util/parse-options.h"
48 #include "util/parse-events.h"
49 #include "util/pmu.h"
50 #include "util/event.h"
51 #include "util/evlist.h"
52 #include "util/evsel.h"
53 #include "util/debug.h"
54 #include "util/color.h"
55 #include "util/stat.h"
56 #include "util/header.h"
57 #include "util/cpumap.h"
58 #include "util/thread.h"
59 #include "util/thread_map.h"
60
61 #include <stdlib.h>
62 #include <sys/prctl.h>
63 #include <locale.h>
64
65 #define DEFAULT_SEPARATOR " "
66 #define CNTR_NOT_SUPPORTED "<not supported>"
67 #define CNTR_NOT_COUNTED "<not counted>"
68
69 static void print_stat(int argc, const char **argv);
70 static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
71 static void print_counter(struct perf_evsel *counter, char *prefix);
72 static void print_aggr(char *prefix);
73
74 /* Default events used for perf stat -T */
75 static const char * const transaction_attrs[] = {
76 "task-clock",
77 "{"
78 "instructions,"
79 "cycles,"
80 "cpu/cycles-t/,"
81 "cpu/tx-start/,"
82 "cpu/el-start/,"
83 "cpu/cycles-ct/"
84 "}"
85 };
86
87 /* More limited version when the CPU does not have all events. */
88 static const char * const transaction_limited_attrs[] = {
89 "task-clock",
90 "{"
91 "instructions,"
92 "cycles,"
93 "cpu/cycles-t/,"
94 "cpu/tx-start/"
95 "}"
96 };
97
98 /* must match transaction_attrs and the beginning limited_attrs */
99 enum {
100 T_TASK_CLOCK,
101 T_INSTRUCTIONS,
102 T_CYCLES,
103 T_CYCLES_IN_TX,
104 T_TRANSACTION_START,
105 T_ELISION_START,
106 T_CYCLES_IN_TX_CP,
107 };
108
109 static struct perf_evlist *evsel_list;
110
111 static struct target target = {
112 .uid = UINT_MAX,
113 };
114
115 enum aggr_mode {
116 AGGR_NONE,
117 AGGR_GLOBAL,
118 AGGR_SOCKET,
119 AGGR_CORE,
120 };
121
122 static int run_count = 1;
123 static bool no_inherit = false;
124 static bool scale = true;
125 static enum aggr_mode aggr_mode = AGGR_GLOBAL;
126 static volatile pid_t child_pid = -1;
127 static bool null_run = false;
128 static int detailed_run = 0;
129 static bool transaction_run;
130 static bool big_num = true;
131 static int big_num_opt = -1;
132 static const char *csv_sep = NULL;
133 static bool csv_output = false;
134 static bool group = false;
135 static FILE *output = NULL;
136 static const char *pre_cmd = NULL;
137 static const char *post_cmd = NULL;
138 static bool sync_run = false;
139 static unsigned int interval = 0;
140 static unsigned int initial_delay = 0;
141 static bool forever = false;
142 static struct timespec ref_time;
143 static struct cpu_map *aggr_map;
144 static int (*aggr_get_id)(struct cpu_map *m, int cpu);
145
146 static volatile int done = 0;
147
148 struct perf_stat {
149 struct stats res_stats[3];
150 };
151
152 static inline void diff_timespec(struct timespec *r, struct timespec *a,
153 struct timespec *b)
154 {
155 r->tv_sec = a->tv_sec - b->tv_sec;
156 if (a->tv_nsec < b->tv_nsec) {
157 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
158 r->tv_sec--;
159 } else {
160 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
161 }
162 }
163
164 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
165 {
166 return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
167 }
168
169 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
170 {
171 return perf_evsel__cpus(evsel)->nr;
172 }
173
174 static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
175 {
176 memset(evsel->priv, 0, sizeof(struct perf_stat));
177 }
178
179 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
180 {
181 evsel->priv = zalloc(sizeof(struct perf_stat));
182 return evsel->priv == NULL ? -ENOMEM : 0;
183 }
184
185 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
186 {
187 free(evsel->priv);
188 evsel->priv = NULL;
189 }
190
191 static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
192 {
193 void *addr;
194 size_t sz;
195
196 sz = sizeof(*evsel->counts) +
197 (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
198
199 addr = zalloc(sz);
200 if (!addr)
201 return -ENOMEM;
202
203 evsel->prev_raw_counts = addr;
204
205 return 0;
206 }
207
208 static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
209 {
210 free(evsel->prev_raw_counts);
211 evsel->prev_raw_counts = NULL;
212 }
213
214 static void perf_evlist__free_stats(struct perf_evlist *evlist)
215 {
216 struct perf_evsel *evsel;
217
218 list_for_each_entry(evsel, &evlist->entries, node) {
219 perf_evsel__free_stat_priv(evsel);
220 perf_evsel__free_counts(evsel);
221 perf_evsel__free_prev_raw_counts(evsel);
222 }
223 }
224
225 static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
226 {
227 struct perf_evsel *evsel;
228
229 list_for_each_entry(evsel, &evlist->entries, node) {
230 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
231 perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
232 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
233 goto out_free;
234 }
235
236 return 0;
237
238 out_free:
239 perf_evlist__free_stats(evlist);
240 return -1;
241 }
242
243 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
244 static struct stats runtime_cycles_stats[MAX_NR_CPUS];
245 static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
246 static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
247 static struct stats runtime_branches_stats[MAX_NR_CPUS];
248 static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
249 static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
250 static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
251 static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
252 static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
253 static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
254 static struct stats runtime_cycles_in_tx_stats[MAX_NR_CPUS];
255 static struct stats walltime_nsecs_stats;
256 static struct stats runtime_transaction_stats[MAX_NR_CPUS];
257 static struct stats runtime_elision_stats[MAX_NR_CPUS];
258
259 static void perf_stat__reset_stats(struct perf_evlist *evlist)
260 {
261 struct perf_evsel *evsel;
262
263 list_for_each_entry(evsel, &evlist->entries, node) {
264 perf_evsel__reset_stat_priv(evsel);
265 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
266 }
267
268 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
269 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
270 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
271 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
272 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
273 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
274 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
275 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
276 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
277 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
278 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
279 memset(runtime_cycles_in_tx_stats, 0,
280 sizeof(runtime_cycles_in_tx_stats));
281 memset(runtime_transaction_stats, 0,
282 sizeof(runtime_transaction_stats));
283 memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
284 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
285 }
286
287 static int create_perf_stat_counter(struct perf_evsel *evsel)
288 {
289 struct perf_event_attr *attr = &evsel->attr;
290
291 if (scale)
292 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
293 PERF_FORMAT_TOTAL_TIME_RUNNING;
294
295 attr->inherit = !no_inherit;
296
297 if (target__has_cpu(&target))
298 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
299
300 if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) {
301 attr->disabled = 1;
302 if (!initial_delay)
303 attr->enable_on_exec = 1;
304 }
305
306 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
307 }
308
309 /*
310 * Does the counter have nsecs as a unit?
311 */
312 static inline int nsec_counter(struct perf_evsel *evsel)
313 {
314 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
315 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
316 return 1;
317
318 return 0;
319 }
320
321 static struct perf_evsel *nth_evsel(int n)
322 {
323 static struct perf_evsel **array;
324 static int array_len;
325 struct perf_evsel *ev;
326 int j;
327
328 /* Assumes this only called when evsel_list does not change anymore. */
329 if (!array) {
330 list_for_each_entry(ev, &evsel_list->entries, node)
331 array_len++;
332 array = malloc(array_len * sizeof(void *));
333 if (!array)
334 exit(ENOMEM);
335 j = 0;
336 list_for_each_entry(ev, &evsel_list->entries, node)
337 array[j++] = ev;
338 }
339 if (n < array_len)
340 return array[n];
341 return NULL;
342 }
343
344 /*
345 * Update various tracking values we maintain to print
346 * more semantic information such as miss/hit ratios,
347 * instruction rates, etc:
348 */
349 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
350 {
351 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
352 update_stats(&runtime_nsecs_stats[0], count[0]);
353 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
354 update_stats(&runtime_cycles_stats[0], count[0]);
355 else if (transaction_run &&
356 perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
357 update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
358 else if (transaction_run &&
359 perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
360 update_stats(&runtime_transaction_stats[0], count[0]);
361 else if (transaction_run &&
362 perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
363 update_stats(&runtime_elision_stats[0], count[0]);
364 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
365 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
366 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
367 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
368 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
369 update_stats(&runtime_branches_stats[0], count[0]);
370 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
371 update_stats(&runtime_cacherefs_stats[0], count[0]);
372 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
373 update_stats(&runtime_l1_dcache_stats[0], count[0]);
374 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
375 update_stats(&runtime_l1_icache_stats[0], count[0]);
376 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
377 update_stats(&runtime_ll_cache_stats[0], count[0]);
378 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
379 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
380 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
381 update_stats(&runtime_itlb_cache_stats[0], count[0]);
382 }
383
384 /*
385 * Read out the results of a single counter:
386 * aggregate counts across CPUs in system-wide mode
387 */
388 static int read_counter_aggr(struct perf_evsel *counter)
389 {
390 struct perf_stat *ps = counter->priv;
391 u64 *count = counter->counts->aggr.values;
392 int i;
393
394 if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
395 thread_map__nr(evsel_list->threads), scale) < 0)
396 return -1;
397
398 for (i = 0; i < 3; i++)
399 update_stats(&ps->res_stats[i], count[i]);
400
401 if (verbose) {
402 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
403 perf_evsel__name(counter), count[0], count[1], count[2]);
404 }
405
406 /*
407 * Save the full runtime - to allow normalization during printout:
408 */
409 update_shadow_stats(counter, count);
410
411 return 0;
412 }
413
414 /*
415 * Read out the results of a single counter:
416 * do not aggregate counts across CPUs in system-wide mode
417 */
418 static int read_counter(struct perf_evsel *counter)
419 {
420 u64 *count;
421 int cpu;
422
423 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
424 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
425 return -1;
426
427 count = counter->counts->cpu[cpu].values;
428
429 update_shadow_stats(counter, count);
430 }
431
432 return 0;
433 }
434
435 static void print_interval(void)
436 {
437 static int num_print_interval;
438 struct perf_evsel *counter;
439 struct perf_stat *ps;
440 struct timespec ts, rs;
441 char prefix[64];
442
443 if (aggr_mode == AGGR_GLOBAL) {
444 list_for_each_entry(counter, &evsel_list->entries, node) {
445 ps = counter->priv;
446 memset(ps->res_stats, 0, sizeof(ps->res_stats));
447 read_counter_aggr(counter);
448 }
449 } else {
450 list_for_each_entry(counter, &evsel_list->entries, node) {
451 ps = counter->priv;
452 memset(ps->res_stats, 0, sizeof(ps->res_stats));
453 read_counter(counter);
454 }
455 }
456
457 clock_gettime(CLOCK_MONOTONIC, &ts);
458 diff_timespec(&rs, &ts, &ref_time);
459 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
460
461 if (num_print_interval == 0 && !csv_output) {
462 switch (aggr_mode) {
463 case AGGR_SOCKET:
464 fprintf(output, "# time socket cpus counts events\n");
465 break;
466 case AGGR_CORE:
467 fprintf(output, "# time core cpus counts events\n");
468 break;
469 case AGGR_NONE:
470 fprintf(output, "# time CPU counts events\n");
471 break;
472 case AGGR_GLOBAL:
473 default:
474 fprintf(output, "# time counts events\n");
475 }
476 }
477
478 if (++num_print_interval == 25)
479 num_print_interval = 0;
480
481 switch (aggr_mode) {
482 case AGGR_CORE:
483 case AGGR_SOCKET:
484 print_aggr(prefix);
485 break;
486 case AGGR_NONE:
487 list_for_each_entry(counter, &evsel_list->entries, node)
488 print_counter(counter, prefix);
489 break;
490 case AGGR_GLOBAL:
491 default:
492 list_for_each_entry(counter, &evsel_list->entries, node)
493 print_counter_aggr(counter, prefix);
494 }
495
496 fflush(output);
497 }
498
499 static void handle_initial_delay(void)
500 {
501 struct perf_evsel *counter;
502
503 if (initial_delay) {
504 const int ncpus = cpu_map__nr(evsel_list->cpus),
505 nthreads = thread_map__nr(evsel_list->threads);
506
507 usleep(initial_delay * 1000);
508 list_for_each_entry(counter, &evsel_list->entries, node)
509 perf_evsel__enable(counter, ncpus, nthreads);
510 }
511 }
512
513 static int __run_perf_stat(int argc, const char **argv)
514 {
515 char msg[512];
516 unsigned long long t0, t1;
517 struct perf_evsel *counter;
518 struct timespec ts;
519 int status = 0;
520 const bool forks = (argc > 0);
521
522 if (interval) {
523 ts.tv_sec = interval / 1000;
524 ts.tv_nsec = (interval % 1000) * 1000000;
525 } else {
526 ts.tv_sec = 1;
527 ts.tv_nsec = 0;
528 }
529
530 if (forks) {
531 if (perf_evlist__prepare_workload(evsel_list, &target, argv,
532 false, false) < 0) {
533 perror("failed to prepare workload");
534 return -1;
535 }
536 child_pid = evsel_list->workload.pid;
537 }
538
539 if (group)
540 perf_evlist__set_leader(evsel_list);
541
542 list_for_each_entry(counter, &evsel_list->entries, node) {
543 if (create_perf_stat_counter(counter) < 0) {
544 /*
545 * PPC returns ENXIO for HW counters until 2.6.37
546 * (behavior changed with commit b0a873e).
547 */
548 if (errno == EINVAL || errno == ENOSYS ||
549 errno == ENOENT || errno == EOPNOTSUPP ||
550 errno == ENXIO) {
551 if (verbose)
552 ui__warning("%s event is not supported by the kernel.\n",
553 perf_evsel__name(counter));
554 counter->supported = false;
555 continue;
556 }
557
558 perf_evsel__open_strerror(counter, &target,
559 errno, msg, sizeof(msg));
560 ui__error("%s\n", msg);
561
562 if (child_pid != -1)
563 kill(child_pid, SIGTERM);
564
565 return -1;
566 }
567 counter->supported = true;
568 }
569
570 if (perf_evlist__apply_filters(evsel_list)) {
571 error("failed to set filter with %d (%s)\n", errno,
572 strerror(errno));
573 return -1;
574 }
575
576 /*
577 * Enable counters and exec the command:
578 */
579 t0 = rdclock();
580 clock_gettime(CLOCK_MONOTONIC, &ref_time);
581
582 if (forks) {
583 perf_evlist__start_workload(evsel_list);
584 handle_initial_delay();
585
586 if (interval) {
587 while (!waitpid(child_pid, &status, WNOHANG)) {
588 nanosleep(&ts, NULL);
589 print_interval();
590 }
591 }
592 wait(&status);
593 if (WIFSIGNALED(status))
594 psignal(WTERMSIG(status), argv[0]);
595 } else {
596 handle_initial_delay();
597 while (!done) {
598 nanosleep(&ts, NULL);
599 if (interval)
600 print_interval();
601 }
602 }
603
604 t1 = rdclock();
605
606 update_stats(&walltime_nsecs_stats, t1 - t0);
607
608 if (aggr_mode == AGGR_GLOBAL) {
609 list_for_each_entry(counter, &evsel_list->entries, node) {
610 read_counter_aggr(counter);
611 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
612 thread_map__nr(evsel_list->threads));
613 }
614 } else {
615 list_for_each_entry(counter, &evsel_list->entries, node) {
616 read_counter(counter);
617 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
618 }
619 }
620
621 return WEXITSTATUS(status);
622 }
623
624 static int run_perf_stat(int argc __maybe_unused, const char **argv)
625 {
626 int ret;
627
628 if (pre_cmd) {
629 ret = system(pre_cmd);
630 if (ret)
631 return ret;
632 }
633
634 if (sync_run)
635 sync();
636
637 ret = __run_perf_stat(argc, argv);
638 if (ret)
639 return ret;
640
641 if (post_cmd) {
642 ret = system(post_cmd);
643 if (ret)
644 return ret;
645 }
646
647 return ret;
648 }
649
650 static void print_noise_pct(double total, double avg)
651 {
652 double pct = rel_stddev_stats(total, avg);
653
654 if (csv_output)
655 fprintf(output, "%s%.2f%%", csv_sep, pct);
656 else if (pct)
657 fprintf(output, " ( +-%6.2f%% )", pct);
658 }
659
660 static void print_noise(struct perf_evsel *evsel, double avg)
661 {
662 struct perf_stat *ps;
663
664 if (run_count == 1)
665 return;
666
667 ps = evsel->priv;
668 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
669 }
670
671 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
672 {
673 switch (aggr_mode) {
674 case AGGR_CORE:
675 fprintf(output, "S%d-C%*d%s%*d%s",
676 cpu_map__id_to_socket(id),
677 csv_output ? 0 : -8,
678 cpu_map__id_to_cpu(id),
679 csv_sep,
680 csv_output ? 0 : 4,
681 nr,
682 csv_sep);
683 break;
684 case AGGR_SOCKET:
685 fprintf(output, "S%*d%s%*d%s",
686 csv_output ? 0 : -5,
687 id,
688 csv_sep,
689 csv_output ? 0 : 4,
690 nr,
691 csv_sep);
692 break;
693 case AGGR_NONE:
694 fprintf(output, "CPU%*d%s",
695 csv_output ? 0 : -4,
696 perf_evsel__cpus(evsel)->map[id], csv_sep);
697 break;
698 case AGGR_GLOBAL:
699 default:
700 break;
701 }
702 }
703
704 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
705 {
706 double msecs = avg / 1e6;
707 const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
708 char name[25];
709
710 aggr_printout(evsel, cpu, nr);
711
712 scnprintf(name, sizeof(name), "%s%s",
713 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
714 fprintf(output, fmt, msecs, csv_sep, name);
715
716 if (evsel->cgrp)
717 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
718
719 if (csv_output || interval)
720 return;
721
722 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
723 fprintf(output, " # %8.3f CPUs utilized ",
724 avg / avg_stats(&walltime_nsecs_stats));
725 else
726 fprintf(output, " ");
727 }
728
729 /* used for get_ratio_color() */
730 enum grc_type {
731 GRC_STALLED_CYCLES_FE,
732 GRC_STALLED_CYCLES_BE,
733 GRC_CACHE_MISSES,
734 GRC_MAX_NR
735 };
736
737 static const char *get_ratio_color(enum grc_type type, double ratio)
738 {
739 static const double grc_table[GRC_MAX_NR][3] = {
740 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
741 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
742 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
743 };
744 const char *color = PERF_COLOR_NORMAL;
745
746 if (ratio > grc_table[type][0])
747 color = PERF_COLOR_RED;
748 else if (ratio > grc_table[type][1])
749 color = PERF_COLOR_MAGENTA;
750 else if (ratio > grc_table[type][2])
751 color = PERF_COLOR_YELLOW;
752
753 return color;
754 }
755
756 static void print_stalled_cycles_frontend(int cpu,
757 struct perf_evsel *evsel
758 __maybe_unused, double avg)
759 {
760 double total, ratio = 0.0;
761 const char *color;
762
763 total = avg_stats(&runtime_cycles_stats[cpu]);
764
765 if (total)
766 ratio = avg / total * 100.0;
767
768 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
769
770 fprintf(output, " # ");
771 color_fprintf(output, color, "%6.2f%%", ratio);
772 fprintf(output, " frontend cycles idle ");
773 }
774
775 static void print_stalled_cycles_backend(int cpu,
776 struct perf_evsel *evsel
777 __maybe_unused, double avg)
778 {
779 double total, ratio = 0.0;
780 const char *color;
781
782 total = avg_stats(&runtime_cycles_stats[cpu]);
783
784 if (total)
785 ratio = avg / total * 100.0;
786
787 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
788
789 fprintf(output, " # ");
790 color_fprintf(output, color, "%6.2f%%", ratio);
791 fprintf(output, " backend cycles idle ");
792 }
793
794 static void print_branch_misses(int cpu,
795 struct perf_evsel *evsel __maybe_unused,
796 double avg)
797 {
798 double total, ratio = 0.0;
799 const char *color;
800
801 total = avg_stats(&runtime_branches_stats[cpu]);
802
803 if (total)
804 ratio = avg / total * 100.0;
805
806 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
807
808 fprintf(output, " # ");
809 color_fprintf(output, color, "%6.2f%%", ratio);
810 fprintf(output, " of all branches ");
811 }
812
813 static void print_l1_dcache_misses(int cpu,
814 struct perf_evsel *evsel __maybe_unused,
815 double avg)
816 {
817 double total, ratio = 0.0;
818 const char *color;
819
820 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
821
822 if (total)
823 ratio = avg / total * 100.0;
824
825 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
826
827 fprintf(output, " # ");
828 color_fprintf(output, color, "%6.2f%%", ratio);
829 fprintf(output, " of all L1-dcache hits ");
830 }
831
832 static void print_l1_icache_misses(int cpu,
833 struct perf_evsel *evsel __maybe_unused,
834 double avg)
835 {
836 double total, ratio = 0.0;
837 const char *color;
838
839 total = avg_stats(&runtime_l1_icache_stats[cpu]);
840
841 if (total)
842 ratio = avg / total * 100.0;
843
844 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
845
846 fprintf(output, " # ");
847 color_fprintf(output, color, "%6.2f%%", ratio);
848 fprintf(output, " of all L1-icache hits ");
849 }
850
851 static void print_dtlb_cache_misses(int cpu,
852 struct perf_evsel *evsel __maybe_unused,
853 double avg)
854 {
855 double total, ratio = 0.0;
856 const char *color;
857
858 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
859
860 if (total)
861 ratio = avg / total * 100.0;
862
863 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
864
865 fprintf(output, " # ");
866 color_fprintf(output, color, "%6.2f%%", ratio);
867 fprintf(output, " of all dTLB cache hits ");
868 }
869
870 static void print_itlb_cache_misses(int cpu,
871 struct perf_evsel *evsel __maybe_unused,
872 double avg)
873 {
874 double total, ratio = 0.0;
875 const char *color;
876
877 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
878
879 if (total)
880 ratio = avg / total * 100.0;
881
882 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
883
884 fprintf(output, " # ");
885 color_fprintf(output, color, "%6.2f%%", ratio);
886 fprintf(output, " of all iTLB cache hits ");
887 }
888
889 static void print_ll_cache_misses(int cpu,
890 struct perf_evsel *evsel __maybe_unused,
891 double avg)
892 {
893 double total, ratio = 0.0;
894 const char *color;
895
896 total = avg_stats(&runtime_ll_cache_stats[cpu]);
897
898 if (total)
899 ratio = avg / total * 100.0;
900
901 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
902
903 fprintf(output, " # ");
904 color_fprintf(output, color, "%6.2f%%", ratio);
905 fprintf(output, " of all LL-cache hits ");
906 }
907
908 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
909 {
910 double total, ratio = 0.0, total2;
911 const char *fmt;
912
913 if (csv_output)
914 fmt = "%.0f%s%s";
915 else if (big_num)
916 fmt = "%'18.0f%s%-25s";
917 else
918 fmt = "%18.0f%s%-25s";
919
920 aggr_printout(evsel, cpu, nr);
921
922 if (aggr_mode == AGGR_GLOBAL)
923 cpu = 0;
924
925 fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
926
927 if (evsel->cgrp)
928 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
929
930 if (csv_output || interval)
931 return;
932
933 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
934 total = avg_stats(&runtime_cycles_stats[cpu]);
935 if (total) {
936 ratio = avg / total;
937 fprintf(output, " # %5.2f insns per cycle ", ratio);
938 }
939 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
940 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
941
942 if (total && avg) {
943 ratio = total / avg;
944 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
945 }
946
947 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
948 runtime_branches_stats[cpu].n != 0) {
949 print_branch_misses(cpu, evsel, avg);
950 } else if (
951 evsel->attr.type == PERF_TYPE_HW_CACHE &&
952 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
953 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
954 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
955 runtime_l1_dcache_stats[cpu].n != 0) {
956 print_l1_dcache_misses(cpu, evsel, avg);
957 } else if (
958 evsel->attr.type == PERF_TYPE_HW_CACHE &&
959 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
960 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
961 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
962 runtime_l1_icache_stats[cpu].n != 0) {
963 print_l1_icache_misses(cpu, evsel, avg);
964 } else if (
965 evsel->attr.type == PERF_TYPE_HW_CACHE &&
966 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
967 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
968 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
969 runtime_dtlb_cache_stats[cpu].n != 0) {
970 print_dtlb_cache_misses(cpu, evsel, avg);
971 } else if (
972 evsel->attr.type == PERF_TYPE_HW_CACHE &&
973 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
974 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
975 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
976 runtime_itlb_cache_stats[cpu].n != 0) {
977 print_itlb_cache_misses(cpu, evsel, avg);
978 } else if (
979 evsel->attr.type == PERF_TYPE_HW_CACHE &&
980 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
981 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
982 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
983 runtime_ll_cache_stats[cpu].n != 0) {
984 print_ll_cache_misses(cpu, evsel, avg);
985 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
986 runtime_cacherefs_stats[cpu].n != 0) {
987 total = avg_stats(&runtime_cacherefs_stats[cpu]);
988
989 if (total)
990 ratio = avg * 100 / total;
991
992 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
993
994 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
995 print_stalled_cycles_frontend(cpu, evsel, avg);
996 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
997 print_stalled_cycles_backend(cpu, evsel, avg);
998 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
999 total = avg_stats(&runtime_nsecs_stats[cpu]);
1000
1001 if (total) {
1002 ratio = avg / total;
1003 fprintf(output, " # %8.3f GHz ", ratio);
1004 }
1005 } else if (transaction_run &&
1006 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1007 total = avg_stats(&runtime_cycles_stats[cpu]);
1008 if (total)
1009 fprintf(output,
1010 " # %5.2f%% transactional cycles ",
1011 100.0 * (avg / total));
1012 } else if (transaction_run &&
1013 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1014 total = avg_stats(&runtime_cycles_stats[cpu]);
1015 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1016 if (total2 < avg)
1017 total2 = avg;
1018 if (total)
1019 fprintf(output,
1020 " # %5.2f%% aborted cycles ",
1021 100.0 * ((total2-avg) / total));
1022 } else if (transaction_run &&
1023 perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1024 avg > 0 &&
1025 runtime_cycles_in_tx_stats[cpu].n != 0) {
1026 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1027
1028 if (total)
1029 ratio = total / avg;
1030
1031 fprintf(output, " # %8.0f cycles / transaction ", ratio);
1032 } else if (transaction_run &&
1033 perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1034 avg > 0 &&
1035 runtime_cycles_in_tx_stats[cpu].n != 0) {
1036 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1037
1038 if (total)
1039 ratio = total / avg;
1040
1041 fprintf(output, " # %8.0f cycles / elision ", ratio);
1042 } else if (runtime_nsecs_stats[cpu].n != 0) {
1043 char unit = 'M';
1044
1045 total = avg_stats(&runtime_nsecs_stats[cpu]);
1046
1047 if (total)
1048 ratio = 1000.0 * avg / total;
1049 if (ratio < 0.001) {
1050 ratio *= 1000;
1051 unit = 'K';
1052 }
1053
1054 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
1055 } else {
1056 fprintf(output, " ");
1057 }
1058 }
1059
1060 static void print_aggr(char *prefix)
1061 {
1062 struct perf_evsel *counter;
1063 int cpu, cpu2, s, s2, id, nr;
1064 u64 ena, run, val;
1065
1066 if (!(aggr_map || aggr_get_id))
1067 return;
1068
1069 for (s = 0; s < aggr_map->nr; s++) {
1070 id = aggr_map->map[s];
1071 list_for_each_entry(counter, &evsel_list->entries, node) {
1072 val = ena = run = 0;
1073 nr = 0;
1074 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1075 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1076 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1077 if (s2 != id)
1078 continue;
1079 val += counter->counts->cpu[cpu].val;
1080 ena += counter->counts->cpu[cpu].ena;
1081 run += counter->counts->cpu[cpu].run;
1082 nr++;
1083 }
1084 if (prefix)
1085 fprintf(output, "%s", prefix);
1086
1087 if (run == 0 || ena == 0) {
1088 aggr_printout(counter, id, nr);
1089
1090 fprintf(output, "%*s%s%*s",
1091 csv_output ? 0 : 18,
1092 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1093 csv_sep,
1094 csv_output ? 0 : -24,
1095 perf_evsel__name(counter));
1096
1097 if (counter->cgrp)
1098 fprintf(output, "%s%s",
1099 csv_sep, counter->cgrp->name);
1100
1101 fputc('\n', output);
1102 continue;
1103 }
1104
1105 if (nsec_counter(counter))
1106 nsec_printout(id, nr, counter, val);
1107 else
1108 abs_printout(id, nr, counter, val);
1109
1110 if (!csv_output) {
1111 print_noise(counter, 1.0);
1112
1113 if (run != ena)
1114 fprintf(output, " (%.2f%%)",
1115 100.0 * run / ena);
1116 }
1117 fputc('\n', output);
1118 }
1119 }
1120 }
1121
1122 /*
1123 * Print out the results of a single counter:
1124 * aggregated counts in system-wide mode
1125 */
1126 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1127 {
1128 struct perf_stat *ps = counter->priv;
1129 double avg = avg_stats(&ps->res_stats[0]);
1130 int scaled = counter->counts->scaled;
1131
1132 if (prefix)
1133 fprintf(output, "%s", prefix);
1134
1135 if (scaled == -1) {
1136 fprintf(output, "%*s%s%*s",
1137 csv_output ? 0 : 18,
1138 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1139 csv_sep,
1140 csv_output ? 0 : -24,
1141 perf_evsel__name(counter));
1142
1143 if (counter->cgrp)
1144 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1145
1146 fputc('\n', output);
1147 return;
1148 }
1149
1150 if (nsec_counter(counter))
1151 nsec_printout(-1, 0, counter, avg);
1152 else
1153 abs_printout(-1, 0, counter, avg);
1154
1155 print_noise(counter, avg);
1156
1157 if (csv_output) {
1158 fputc('\n', output);
1159 return;
1160 }
1161
1162 if (scaled) {
1163 double avg_enabled, avg_running;
1164
1165 avg_enabled = avg_stats(&ps->res_stats[1]);
1166 avg_running = avg_stats(&ps->res_stats[2]);
1167
1168 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1169 }
1170 fprintf(output, "\n");
1171 }
1172
1173 /*
1174 * Print out the results of a single counter:
1175 * does not use aggregated count in system-wide
1176 */
1177 static void print_counter(struct perf_evsel *counter, char *prefix)
1178 {
1179 u64 ena, run, val;
1180 int cpu;
1181
1182 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1183 val = counter->counts->cpu[cpu].val;
1184 ena = counter->counts->cpu[cpu].ena;
1185 run = counter->counts->cpu[cpu].run;
1186
1187 if (prefix)
1188 fprintf(output, "%s", prefix);
1189
1190 if (run == 0 || ena == 0) {
1191 fprintf(output, "CPU%*d%s%*s%s%*s",
1192 csv_output ? 0 : -4,
1193 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1194 csv_output ? 0 : 18,
1195 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1196 csv_sep,
1197 csv_output ? 0 : -24,
1198 perf_evsel__name(counter));
1199
1200 if (counter->cgrp)
1201 fprintf(output, "%s%s",
1202 csv_sep, counter->cgrp->name);
1203
1204 fputc('\n', output);
1205 continue;
1206 }
1207
1208 if (nsec_counter(counter))
1209 nsec_printout(cpu, 0, counter, val);
1210 else
1211 abs_printout(cpu, 0, counter, val);
1212
1213 if (!csv_output) {
1214 print_noise(counter, 1.0);
1215
1216 if (run != ena)
1217 fprintf(output, " (%.2f%%)",
1218 100.0 * run / ena);
1219 }
1220 fputc('\n', output);
1221 }
1222 }
1223
1224 static void print_stat(int argc, const char **argv)
1225 {
1226 struct perf_evsel *counter;
1227 int i;
1228
1229 fflush(stdout);
1230
1231 if (!csv_output) {
1232 fprintf(output, "\n");
1233 fprintf(output, " Performance counter stats for ");
1234 if (target.system_wide)
1235 fprintf(output, "\'system wide");
1236 else if (target.cpu_list)
1237 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1238 else if (!target__has_task(&target)) {
1239 fprintf(output, "\'%s", argv[0]);
1240 for (i = 1; i < argc; i++)
1241 fprintf(output, " %s", argv[i]);
1242 } else if (target.pid)
1243 fprintf(output, "process id \'%s", target.pid);
1244 else
1245 fprintf(output, "thread id \'%s", target.tid);
1246
1247 fprintf(output, "\'");
1248 if (run_count > 1)
1249 fprintf(output, " (%d runs)", run_count);
1250 fprintf(output, ":\n\n");
1251 }
1252
1253 switch (aggr_mode) {
1254 case AGGR_CORE:
1255 case AGGR_SOCKET:
1256 print_aggr(NULL);
1257 break;
1258 case AGGR_GLOBAL:
1259 list_for_each_entry(counter, &evsel_list->entries, node)
1260 print_counter_aggr(counter, NULL);
1261 break;
1262 case AGGR_NONE:
1263 list_for_each_entry(counter, &evsel_list->entries, node)
1264 print_counter(counter, NULL);
1265 break;
1266 default:
1267 break;
1268 }
1269
1270 if (!csv_output) {
1271 if (!null_run)
1272 fprintf(output, "\n");
1273 fprintf(output, " %17.9f seconds time elapsed",
1274 avg_stats(&walltime_nsecs_stats)/1e9);
1275 if (run_count > 1) {
1276 fprintf(output, " ");
1277 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1278 avg_stats(&walltime_nsecs_stats));
1279 }
1280 fprintf(output, "\n\n");
1281 }
1282 }
1283
1284 static volatile int signr = -1;
1285
1286 static void skip_signal(int signo)
1287 {
1288 if ((child_pid == -1) || interval)
1289 done = 1;
1290
1291 signr = signo;
1292 /*
1293 * render child_pid harmless
1294 * won't send SIGTERM to a random
1295 * process in case of race condition
1296 * and fast PID recycling
1297 */
1298 child_pid = -1;
1299 }
1300
1301 static void sig_atexit(void)
1302 {
1303 sigset_t set, oset;
1304
1305 /*
1306 * avoid race condition with SIGCHLD handler
1307 * in skip_signal() which is modifying child_pid
1308 * goal is to avoid send SIGTERM to a random
1309 * process
1310 */
1311 sigemptyset(&set);
1312 sigaddset(&set, SIGCHLD);
1313 sigprocmask(SIG_BLOCK, &set, &oset);
1314
1315 if (child_pid != -1)
1316 kill(child_pid, SIGTERM);
1317
1318 sigprocmask(SIG_SETMASK, &oset, NULL);
1319
1320 if (signr == -1)
1321 return;
1322
1323 signal(signr, SIG_DFL);
1324 kill(getpid(), signr);
1325 }
1326
1327 static int stat__set_big_num(const struct option *opt __maybe_unused,
1328 const char *s __maybe_unused, int unset)
1329 {
1330 big_num_opt = unset ? 0 : 1;
1331 return 0;
1332 }
1333
1334 static int perf_stat_init_aggr_mode(void)
1335 {
1336 switch (aggr_mode) {
1337 case AGGR_SOCKET:
1338 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1339 perror("cannot build socket map");
1340 return -1;
1341 }
1342 aggr_get_id = cpu_map__get_socket;
1343 break;
1344 case AGGR_CORE:
1345 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1346 perror("cannot build core map");
1347 return -1;
1348 }
1349 aggr_get_id = cpu_map__get_core;
1350 break;
1351 case AGGR_NONE:
1352 case AGGR_GLOBAL:
1353 default:
1354 break;
1355 }
1356 return 0;
1357 }
1358
1359 static int setup_events(const char * const *attrs, unsigned len)
1360 {
1361 unsigned i;
1362
1363 for (i = 0; i < len; i++) {
1364 if (parse_events(evsel_list, attrs[i]))
1365 return -1;
1366 }
1367 return 0;
1368 }
1369
1370 /*
1371 * Add default attributes, if there were no attributes specified or
1372 * if -d/--detailed, -d -d or -d -d -d is used:
1373 */
1374 static int add_default_attributes(void)
1375 {
1376 struct perf_event_attr default_attrs[] = {
1377
1378 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1379 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1380 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1381 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1382
1383 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1384 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1385 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1386 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1387 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1388 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1389
1390 };
1391
1392 /*
1393 * Detailed stats (-d), covering the L1 and last level data caches:
1394 */
1395 struct perf_event_attr detailed_attrs[] = {
1396
1397 { .type = PERF_TYPE_HW_CACHE,
1398 .config =
1399 PERF_COUNT_HW_CACHE_L1D << 0 |
1400 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1401 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1402
1403 { .type = PERF_TYPE_HW_CACHE,
1404 .config =
1405 PERF_COUNT_HW_CACHE_L1D << 0 |
1406 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1407 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1408
1409 { .type = PERF_TYPE_HW_CACHE,
1410 .config =
1411 PERF_COUNT_HW_CACHE_LL << 0 |
1412 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1413 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1414
1415 { .type = PERF_TYPE_HW_CACHE,
1416 .config =
1417 PERF_COUNT_HW_CACHE_LL << 0 |
1418 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1419 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1420 };
1421
1422 /*
1423 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1424 */
1425 struct perf_event_attr very_detailed_attrs[] = {
1426
1427 { .type = PERF_TYPE_HW_CACHE,
1428 .config =
1429 PERF_COUNT_HW_CACHE_L1I << 0 |
1430 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1431 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1432
1433 { .type = PERF_TYPE_HW_CACHE,
1434 .config =
1435 PERF_COUNT_HW_CACHE_L1I << 0 |
1436 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1437 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1438
1439 { .type = PERF_TYPE_HW_CACHE,
1440 .config =
1441 PERF_COUNT_HW_CACHE_DTLB << 0 |
1442 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1443 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1444
1445 { .type = PERF_TYPE_HW_CACHE,
1446 .config =
1447 PERF_COUNT_HW_CACHE_DTLB << 0 |
1448 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1449 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1450
1451 { .type = PERF_TYPE_HW_CACHE,
1452 .config =
1453 PERF_COUNT_HW_CACHE_ITLB << 0 |
1454 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1455 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1456
1457 { .type = PERF_TYPE_HW_CACHE,
1458 .config =
1459 PERF_COUNT_HW_CACHE_ITLB << 0 |
1460 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1461 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1462
1463 };
1464
1465 /*
1466 * Very, very detailed stats (-d -d -d), adding prefetch events:
1467 */
1468 struct perf_event_attr very_very_detailed_attrs[] = {
1469
1470 { .type = PERF_TYPE_HW_CACHE,
1471 .config =
1472 PERF_COUNT_HW_CACHE_L1D << 0 |
1473 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1474 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1475
1476 { .type = PERF_TYPE_HW_CACHE,
1477 .config =
1478 PERF_COUNT_HW_CACHE_L1D << 0 |
1479 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1480 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1481 };
1482
1483 /* Set attrs if no event is selected and !null_run: */
1484 if (null_run)
1485 return 0;
1486
1487 if (transaction_run) {
1488 int err;
1489 if (pmu_have_event("cpu", "cycles-ct") &&
1490 pmu_have_event("cpu", "el-start"))
1491 err = setup_events(transaction_attrs,
1492 ARRAY_SIZE(transaction_attrs));
1493 else
1494 err = setup_events(transaction_limited_attrs,
1495 ARRAY_SIZE(transaction_limited_attrs));
1496 if (err < 0) {
1497 fprintf(stderr, "Cannot set up transaction events\n");
1498 return -1;
1499 }
1500 return 0;
1501 }
1502
1503 if (!evsel_list->nr_entries) {
1504 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1505 return -1;
1506 }
1507
1508 /* Detailed events get appended to the event list: */
1509
1510 if (detailed_run < 1)
1511 return 0;
1512
1513 /* Append detailed run extra attributes: */
1514 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1515 return -1;
1516
1517 if (detailed_run < 2)
1518 return 0;
1519
1520 /* Append very detailed run extra attributes: */
1521 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1522 return -1;
1523
1524 if (detailed_run < 3)
1525 return 0;
1526
1527 /* Append very, very detailed run extra attributes: */
1528 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1529 }
1530
1531 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1532 {
1533 bool append_file = false;
1534 int output_fd = 0;
1535 const char *output_name = NULL;
1536 const struct option options[] = {
1537 OPT_BOOLEAN('T', "transaction", &transaction_run,
1538 "hardware transaction statistics"),
1539 OPT_CALLBACK('e', "event", &evsel_list, "event",
1540 "event selector. use 'perf list' to list available events",
1541 parse_events_option),
1542 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1543 "event filter", parse_filter),
1544 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1545 "child tasks do not inherit counters"),
1546 OPT_STRING('p', "pid", &target.pid, "pid",
1547 "stat events on existing process id"),
1548 OPT_STRING('t', "tid", &target.tid, "tid",
1549 "stat events on existing thread id"),
1550 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1551 "system-wide collection from all CPUs"),
1552 OPT_BOOLEAN('g', "group", &group,
1553 "put the counters into a counter group"),
1554 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1555 OPT_INCR('v', "verbose", &verbose,
1556 "be more verbose (show counter open errors, etc)"),
1557 OPT_INTEGER('r', "repeat", &run_count,
1558 "repeat command and print average + stddev (max: 100, forever: 0)"),
1559 OPT_BOOLEAN('n', "null", &null_run,
1560 "null run - dont start any counters"),
1561 OPT_INCR('d', "detailed", &detailed_run,
1562 "detailed run - start a lot of events"),
1563 OPT_BOOLEAN('S', "sync", &sync_run,
1564 "call sync() before starting a run"),
1565 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1566 "print large numbers with thousands\' separators",
1567 stat__set_big_num),
1568 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1569 "list of cpus to monitor in system-wide"),
1570 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1571 "disable CPU count aggregation", AGGR_NONE),
1572 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1573 "print counts with custom separator"),
1574 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1575 "monitor event in cgroup name only", parse_cgroups),
1576 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1577 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1578 OPT_INTEGER(0, "log-fd", &output_fd,
1579 "log output to fd, instead of stderr"),
1580 OPT_STRING(0, "pre", &pre_cmd, "command",
1581 "command to run prior to the measured command"),
1582 OPT_STRING(0, "post", &post_cmd, "command",
1583 "command to run after to the measured command"),
1584 OPT_UINTEGER('I', "interval-print", &interval,
1585 "print counts at regular interval in ms (>= 100)"),
1586 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1587 "aggregate counts per processor socket", AGGR_SOCKET),
1588 OPT_SET_UINT(0, "per-core", &aggr_mode,
1589 "aggregate counts per physical processor core", AGGR_CORE),
1590 OPT_UINTEGER('D', "delay", &initial_delay,
1591 "ms to wait before starting measurement after program start"),
1592 OPT_END()
1593 };
1594 const char * const stat_usage[] = {
1595 "perf stat [<options>] [<command>]",
1596 NULL
1597 };
1598 int status = -EINVAL, run_idx;
1599 const char *mode;
1600
1601 setlocale(LC_ALL, "");
1602
1603 evsel_list = perf_evlist__new();
1604 if (evsel_list == NULL)
1605 return -ENOMEM;
1606
1607 argc = parse_options(argc, argv, options, stat_usage,
1608 PARSE_OPT_STOP_AT_NON_OPTION);
1609
1610 output = stderr;
1611 if (output_name && strcmp(output_name, "-"))
1612 output = NULL;
1613
1614 if (output_name && output_fd) {
1615 fprintf(stderr, "cannot use both --output and --log-fd\n");
1616 parse_options_usage(stat_usage, options, "o", 1);
1617 parse_options_usage(NULL, options, "log-fd", 0);
1618 goto out;
1619 }
1620
1621 if (output_fd < 0) {
1622 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1623 parse_options_usage(stat_usage, options, "log-fd", 0);
1624 goto out;
1625 }
1626
1627 if (!output) {
1628 struct timespec tm;
1629 mode = append_file ? "a" : "w";
1630
1631 output = fopen(output_name, mode);
1632 if (!output) {
1633 perror("failed to create output file");
1634 return -1;
1635 }
1636 clock_gettime(CLOCK_REALTIME, &tm);
1637 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1638 } else if (output_fd > 0) {
1639 mode = append_file ? "a" : "w";
1640 output = fdopen(output_fd, mode);
1641 if (!output) {
1642 perror("Failed opening logfd");
1643 return -errno;
1644 }
1645 }
1646
1647 if (csv_sep) {
1648 csv_output = true;
1649 if (!strcmp(csv_sep, "\\t"))
1650 csv_sep = "\t";
1651 } else
1652 csv_sep = DEFAULT_SEPARATOR;
1653
1654 /*
1655 * let the spreadsheet do the pretty-printing
1656 */
1657 if (csv_output) {
1658 /* User explicitly passed -B? */
1659 if (big_num_opt == 1) {
1660 fprintf(stderr, "-B option not supported with -x\n");
1661 parse_options_usage(stat_usage, options, "B", 1);
1662 parse_options_usage(NULL, options, "x", 1);
1663 goto out;
1664 } else /* Nope, so disable big number formatting */
1665 big_num = false;
1666 } else if (big_num_opt == 0) /* User passed --no-big-num */
1667 big_num = false;
1668
1669 if (!argc && target__none(&target))
1670 usage_with_options(stat_usage, options);
1671
1672 if (run_count < 0) {
1673 pr_err("Run count must be a positive number\n");
1674 parse_options_usage(stat_usage, options, "r", 1);
1675 goto out;
1676 } else if (run_count == 0) {
1677 forever = true;
1678 run_count = 1;
1679 }
1680
1681 /* no_aggr, cgroup are for system-wide only */
1682 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
1683 !target__has_cpu(&target)) {
1684 fprintf(stderr, "both cgroup and no-aggregation "
1685 "modes only available in system-wide mode\n");
1686
1687 parse_options_usage(stat_usage, options, "G", 1);
1688 parse_options_usage(NULL, options, "A", 1);
1689 parse_options_usage(NULL, options, "a", 1);
1690 goto out;
1691 }
1692
1693 if (add_default_attributes())
1694 goto out;
1695
1696 target__validate(&target);
1697
1698 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1699 if (target__has_task(&target)) {
1700 pr_err("Problems finding threads of monitor\n");
1701 parse_options_usage(stat_usage, options, "p", 1);
1702 parse_options_usage(NULL, options, "t", 1);
1703 } else if (target__has_cpu(&target)) {
1704 perror("failed to parse CPUs map");
1705 parse_options_usage(stat_usage, options, "C", 1);
1706 parse_options_usage(NULL, options, "a", 1);
1707 }
1708 goto out;
1709 }
1710 if (interval && interval < 100) {
1711 pr_err("print interval must be >= 100ms\n");
1712 parse_options_usage(stat_usage, options, "I", 1);
1713 goto out_free_maps;
1714 }
1715
1716 if (perf_evlist__alloc_stats(evsel_list, interval))
1717 goto out_free_maps;
1718
1719 if (perf_stat_init_aggr_mode())
1720 goto out_free_maps;
1721
1722 /*
1723 * We dont want to block the signals - that would cause
1724 * child tasks to inherit that and Ctrl-C would not work.
1725 * What we want is for Ctrl-C to work in the exec()-ed
1726 * task, but being ignored by perf stat itself:
1727 */
1728 atexit(sig_atexit);
1729 if (!forever)
1730 signal(SIGINT, skip_signal);
1731 signal(SIGCHLD, skip_signal);
1732 signal(SIGALRM, skip_signal);
1733 signal(SIGABRT, skip_signal);
1734
1735 status = 0;
1736 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1737 if (run_count != 1 && verbose)
1738 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1739 run_idx + 1);
1740
1741 status = run_perf_stat(argc, argv);
1742 if (forever && status != -1) {
1743 print_stat(argc, argv);
1744 perf_stat__reset_stats(evsel_list);
1745 }
1746 }
1747
1748 if (!forever && status != -1 && !interval)
1749 print_stat(argc, argv);
1750
1751 perf_evlist__free_stats(evsel_list);
1752 out_free_maps:
1753 perf_evlist__delete_maps(evsel_list);
1754 out:
1755 perf_evlist__delete(evsel_list);
1756 return status;
1757 }
Linux kernel - Deliverables
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