projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED
[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/event.h"
50 #include "util/evlist.h"
51 #include "util/evsel.h"
52 #include "util/debug.h"
53 #include "util/color.h"
54 #include "util/stat.h"
55 #include "util/header.h"
56 #include "util/cpumap.h"
57 #include "util/thread.h"
58 #include "util/thread_map.h"
59
60 #include <stdlib.h>
61 #include <sys/prctl.h>
62 #include <locale.h>
63
64 #define DEFAULT_SEPARATOR " "
65 #define CNTR_NOT_SUPPORTED "<not supported>"
66 #define CNTR_NOT_COUNTED "<not counted>"
67
68 static void print_stat(int argc, const char **argv);
69 static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
70 static void print_counter(struct perf_evsel *counter, char *prefix);
71 static void print_aggr(char *prefix);
72
73 static struct perf_evlist *evsel_list;
74
75 static struct perf_target target = {
76 .uid = UINT_MAX,
77 };
78
79 enum aggr_mode {
80 AGGR_NONE,
81 AGGR_GLOBAL,
82 AGGR_SOCKET,
83 AGGR_CORE,
84 };
85
86 static int run_count = 1;
87 static bool no_inherit = false;
88 static bool scale = true;
89 static enum aggr_mode aggr_mode = AGGR_GLOBAL;
90 static volatile pid_t child_pid = -1;
91 static bool null_run = false;
92 static int detailed_run = 0;
93 static bool big_num = true;
94 static int big_num_opt = -1;
95 static const char *csv_sep = NULL;
96 static bool csv_output = false;
97 static bool group = false;
98 static FILE *output = NULL;
99 static const char *pre_cmd = NULL;
100 static const char *post_cmd = NULL;
101 static bool sync_run = false;
102 static unsigned int interval = 0;
103 static unsigned int initial_delay = 0;
104 static bool forever = false;
105 static struct timespec ref_time;
106 static struct cpu_map *aggr_map;
107 static int (*aggr_get_id)(struct cpu_map *m, int cpu);
108
109 static volatile int done = 0;
110
111 struct perf_stat {
112 struct stats res_stats[3];
113 };
114
115 static inline void diff_timespec(struct timespec *r, struct timespec *a,
116 struct timespec *b)
117 {
118 r->tv_sec = a->tv_sec - b->tv_sec;
119 if (a->tv_nsec < b->tv_nsec) {
120 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
121 r->tv_sec--;
122 } else {
123 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
124 }
125 }
126
127 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
128 {
129 return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
130 }
131
132 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
133 {
134 return perf_evsel__cpus(evsel)->nr;
135 }
136
137 static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
138 {
139 memset(evsel->priv, 0, sizeof(struct perf_stat));
140 }
141
142 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
143 {
144 evsel->priv = zalloc(sizeof(struct perf_stat));
145 return evsel->priv == NULL ? -ENOMEM : 0;
146 }
147
148 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
149 {
150 free(evsel->priv);
151 evsel->priv = NULL;
152 }
153
154 static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
155 {
156 void *addr;
157 size_t sz;
158
159 sz = sizeof(*evsel->counts) +
160 (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
161
162 addr = zalloc(sz);
163 if (!addr)
164 return -ENOMEM;
165
166 evsel->prev_raw_counts = addr;
167
168 return 0;
169 }
170
171 static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
172 {
173 free(evsel->prev_raw_counts);
174 evsel->prev_raw_counts = NULL;
175 }
176
177 static void perf_evlist__free_stats(struct perf_evlist *evlist)
178 {
179 struct perf_evsel *evsel;
180
181 list_for_each_entry(evsel, &evlist->entries, node) {
182 perf_evsel__free_stat_priv(evsel);
183 perf_evsel__free_counts(evsel);
184 perf_evsel__free_prev_raw_counts(evsel);
185 }
186 }
187
188 static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
189 {
190 struct perf_evsel *evsel;
191
192 list_for_each_entry(evsel, &evlist->entries, node) {
193 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
194 perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
195 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
196 goto out_free;
197 }
198
199 return 0;
200
201 out_free:
202 perf_evlist__free_stats(evlist);
203 return -1;
204 }
205
206 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
207 static struct stats runtime_cycles_stats[MAX_NR_CPUS];
208 static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
209 static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
210 static struct stats runtime_branches_stats[MAX_NR_CPUS];
211 static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
212 static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
213 static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
214 static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
215 static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
216 static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
217 static struct stats walltime_nsecs_stats;
218
219 static void perf_stat__reset_stats(struct perf_evlist *evlist)
220 {
221 struct perf_evsel *evsel;
222
223 list_for_each_entry(evsel, &evlist->entries, node) {
224 perf_evsel__reset_stat_priv(evsel);
225 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
226 }
227
228 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
229 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
230 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
231 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
232 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
233 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
234 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
235 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
236 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
237 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
238 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
239 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
240 }
241
242 static int create_perf_stat_counter(struct perf_evsel *evsel)
243 {
244 struct perf_event_attr *attr = &evsel->attr;
245
246 if (scale)
247 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
248 PERF_FORMAT_TOTAL_TIME_RUNNING;
249
250 attr->inherit = !no_inherit;
251
252 if (perf_target__has_cpu(&target))
253 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
254
255 if (!perf_target__has_task(&target) &&
256 perf_evsel__is_group_leader(evsel)) {
257 attr->disabled = 1;
258 if (!initial_delay)
259 attr->enable_on_exec = 1;
260 }
261
262 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
263 }
264
265 /*
266 * Does the counter have nsecs as a unit?
267 */
268 static inline int nsec_counter(struct perf_evsel *evsel)
269 {
270 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
271 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
272 return 1;
273
274 return 0;
275 }
276
277 /*
278 * Update various tracking values we maintain to print
279 * more semantic information such as miss/hit ratios,
280 * instruction rates, etc:
281 */
282 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
283 {
284 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
285 update_stats(&runtime_nsecs_stats[0], count[0]);
286 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
287 update_stats(&runtime_cycles_stats[0], count[0]);
288 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
289 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
290 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
291 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
292 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
293 update_stats(&runtime_branches_stats[0], count[0]);
294 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
295 update_stats(&runtime_cacherefs_stats[0], count[0]);
296 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
297 update_stats(&runtime_l1_dcache_stats[0], count[0]);
298 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
299 update_stats(&runtime_l1_icache_stats[0], count[0]);
300 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
301 update_stats(&runtime_ll_cache_stats[0], count[0]);
302 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
303 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
304 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
305 update_stats(&runtime_itlb_cache_stats[0], count[0]);
306 }
307
308 /*
309 * Read out the results of a single counter:
310 * aggregate counts across CPUs in system-wide mode
311 */
312 static int read_counter_aggr(struct perf_evsel *counter)
313 {
314 struct perf_stat *ps = counter->priv;
315 u64 *count = counter->counts->aggr.values;
316 int i;
317
318 if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
319 thread_map__nr(evsel_list->threads), scale) < 0)
320 return -1;
321
322 for (i = 0; i < 3; i++)
323 update_stats(&ps->res_stats[i], count[i]);
324
325 if (verbose) {
326 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
327 perf_evsel__name(counter), count[0], count[1], count[2]);
328 }
329
330 /*
331 * Save the full runtime - to allow normalization during printout:
332 */
333 update_shadow_stats(counter, count);
334
335 return 0;
336 }
337
338 /*
339 * Read out the results of a single counter:
340 * do not aggregate counts across CPUs in system-wide mode
341 */
342 static int read_counter(struct perf_evsel *counter)
343 {
344 u64 *count;
345 int cpu;
346
347 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
348 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
349 return -1;
350
351 count = counter->counts->cpu[cpu].values;
352
353 update_shadow_stats(counter, count);
354 }
355
356 return 0;
357 }
358
359 static void print_interval(void)
360 {
361 static int num_print_interval;
362 struct perf_evsel *counter;
363 struct perf_stat *ps;
364 struct timespec ts, rs;
365 char prefix[64];
366
367 if (aggr_mode == AGGR_GLOBAL) {
368 list_for_each_entry(counter, &evsel_list->entries, node) {
369 ps = counter->priv;
370 memset(ps->res_stats, 0, sizeof(ps->res_stats));
371 read_counter_aggr(counter);
372 }
373 } else {
374 list_for_each_entry(counter, &evsel_list->entries, node) {
375 ps = counter->priv;
376 memset(ps->res_stats, 0, sizeof(ps->res_stats));
377 read_counter(counter);
378 }
379 }
380
381 clock_gettime(CLOCK_MONOTONIC, &ts);
382 diff_timespec(&rs, &ts, &ref_time);
383 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
384
385 if (num_print_interval == 0 && !csv_output) {
386 switch (aggr_mode) {
387 case AGGR_SOCKET:
388 fprintf(output, "# time socket cpus counts events\n");
389 break;
390 case AGGR_CORE:
391 fprintf(output, "# time core cpus counts events\n");
392 break;
393 case AGGR_NONE:
394 fprintf(output, "# time CPU counts events\n");
395 break;
396 case AGGR_GLOBAL:
397 default:
398 fprintf(output, "# time counts events\n");
399 }
400 }
401
402 if (++num_print_interval == 25)
403 num_print_interval = 0;
404
405 switch (aggr_mode) {
406 case AGGR_CORE:
407 case AGGR_SOCKET:
408 print_aggr(prefix);
409 break;
410 case AGGR_NONE:
411 list_for_each_entry(counter, &evsel_list->entries, node)
412 print_counter(counter, prefix);
413 break;
414 case AGGR_GLOBAL:
415 default:
416 list_for_each_entry(counter, &evsel_list->entries, node)
417 print_counter_aggr(counter, prefix);
418 }
419
420 fflush(output);
421 }
422
423 static void handle_initial_delay(void)
424 {
425 struct perf_evsel *counter;
426
427 if (initial_delay) {
428 const int ncpus = cpu_map__nr(evsel_list->cpus),
429 nthreads = thread_map__nr(evsel_list->threads);
430
431 usleep(initial_delay * 1000);
432 list_for_each_entry(counter, &evsel_list->entries, node)
433 perf_evsel__enable(counter, ncpus, nthreads);
434 }
435 }
436
437 static int __run_perf_stat(int argc, const char **argv)
438 {
439 char msg[512];
440 unsigned long long t0, t1;
441 struct perf_evsel *counter;
442 struct timespec ts;
443 int status = 0;
444 const bool forks = (argc > 0);
445
446 if (interval) {
447 ts.tv_sec = interval / 1000;
448 ts.tv_nsec = (interval % 1000) * 1000000;
449 } else {
450 ts.tv_sec = 1;
451 ts.tv_nsec = 0;
452 }
453
454 if (forks) {
455 if (perf_evlist__prepare_workload(evsel_list, &target, argv,
456 false, false) < 0) {
457 perror("failed to prepare workload");
458 return -1;
459 }
460 child_pid = evsel_list->workload.pid;
461 }
462
463 if (group)
464 perf_evlist__set_leader(evsel_list);
465
466 list_for_each_entry(counter, &evsel_list->entries, node) {
467 if (create_perf_stat_counter(counter) < 0) {
468 /*
469 * PPC returns ENXIO for HW counters until 2.6.37
470 * (behavior changed with commit b0a873e).
471 */
472 if (errno == EINVAL || errno == ENOSYS ||
473 errno == ENOENT || errno == EOPNOTSUPP ||
474 errno == ENXIO) {
475 if (verbose)
476 ui__warning("%s event is not supported by the kernel.\n",
477 perf_evsel__name(counter));
478 counter->supported = false;
479 continue;
480 }
481
482 perf_evsel__open_strerror(counter, &target,
483 errno, msg, sizeof(msg));
484 ui__error("%s\n", msg);
485
486 if (child_pid != -1)
487 kill(child_pid, SIGTERM);
488
489 return -1;
490 }
491 counter->supported = true;
492 }
493
494 if (perf_evlist__apply_filters(evsel_list)) {
495 error("failed to set filter with %d (%s)\n", errno,
496 strerror(errno));
497 return -1;
498 }
499
500 /*
501 * Enable counters and exec the command:
502 */
503 t0 = rdclock();
504 clock_gettime(CLOCK_MONOTONIC, &ref_time);
505
506 if (forks) {
507 perf_evlist__start_workload(evsel_list);
508 handle_initial_delay();
509
510 if (interval) {
511 while (!waitpid(child_pid, &status, WNOHANG)) {
512 nanosleep(&ts, NULL);
513 print_interval();
514 }
515 }
516 wait(&status);
517 if (WIFSIGNALED(status))
518 psignal(WTERMSIG(status), argv[0]);
519 } else {
520 handle_initial_delay();
521 while (!done) {
522 nanosleep(&ts, NULL);
523 if (interval)
524 print_interval();
525 }
526 }
527
528 t1 = rdclock();
529
530 update_stats(&walltime_nsecs_stats, t1 - t0);
531
532 if (aggr_mode == AGGR_GLOBAL) {
533 list_for_each_entry(counter, &evsel_list->entries, node) {
534 read_counter_aggr(counter);
535 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
536 thread_map__nr(evsel_list->threads));
537 }
538 } else {
539 list_for_each_entry(counter, &evsel_list->entries, node) {
540 read_counter(counter);
541 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
542 }
543 }
544
545 return WEXITSTATUS(status);
546 }
547
548 static int run_perf_stat(int argc __maybe_unused, const char **argv)
549 {
550 int ret;
551
552 if (pre_cmd) {
553 ret = system(pre_cmd);
554 if (ret)
555 return ret;
556 }
557
558 if (sync_run)
559 sync();
560
561 ret = __run_perf_stat(argc, argv);
562 if (ret)
563 return ret;
564
565 if (post_cmd) {
566 ret = system(post_cmd);
567 if (ret)
568 return ret;
569 }
570
571 return ret;
572 }
573
574 static void print_noise_pct(double total, double avg)
575 {
576 double pct = rel_stddev_stats(total, avg);
577
578 if (csv_output)
579 fprintf(output, "%s%.2f%%", csv_sep, pct);
580 else if (pct)
581 fprintf(output, " ( +-%6.2f%% )", pct);
582 }
583
584 static void print_noise(struct perf_evsel *evsel, double avg)
585 {
586 struct perf_stat *ps;
587
588 if (run_count == 1)
589 return;
590
591 ps = evsel->priv;
592 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
593 }
594
595 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
596 {
597 switch (aggr_mode) {
598 case AGGR_CORE:
599 fprintf(output, "S%d-C%*d%s%*d%s",
600 cpu_map__id_to_socket(id),
601 csv_output ? 0 : -8,
602 cpu_map__id_to_cpu(id),
603 csv_sep,
604 csv_output ? 0 : 4,
605 nr,
606 csv_sep);
607 break;
608 case AGGR_SOCKET:
609 fprintf(output, "S%*d%s%*d%s",
610 csv_output ? 0 : -5,
611 id,
612 csv_sep,
613 csv_output ? 0 : 4,
614 nr,
615 csv_sep);
616 break;
617 case AGGR_NONE:
618 fprintf(output, "CPU%*d%s",
619 csv_output ? 0 : -4,
620 perf_evsel__cpus(evsel)->map[id], csv_sep);
621 break;
622 case AGGR_GLOBAL:
623 default:
624 break;
625 }
626 }
627
628 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
629 {
630 double msecs = avg / 1e6;
631 const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
632
633 aggr_printout(evsel, cpu, nr);
634
635 fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
636
637 if (evsel->cgrp)
638 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
639
640 if (csv_output || interval)
641 return;
642
643 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
644 fprintf(output, " # %8.3f CPUs utilized ",
645 avg / avg_stats(&walltime_nsecs_stats));
646 else
647 fprintf(output, " ");
648 }
649
650 /* used for get_ratio_color() */
651 enum grc_type {
652 GRC_STALLED_CYCLES_FE,
653 GRC_STALLED_CYCLES_BE,
654 GRC_CACHE_MISSES,
655 GRC_MAX_NR
656 };
657
658 static const char *get_ratio_color(enum grc_type type, double ratio)
659 {
660 static const double grc_table[GRC_MAX_NR][3] = {
661 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
662 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
663 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
664 };
665 const char *color = PERF_COLOR_NORMAL;
666
667 if (ratio > grc_table[type][0])
668 color = PERF_COLOR_RED;
669 else if (ratio > grc_table[type][1])
670 color = PERF_COLOR_MAGENTA;
671 else if (ratio > grc_table[type][2])
672 color = PERF_COLOR_YELLOW;
673
674 return color;
675 }
676
677 static void print_stalled_cycles_frontend(int cpu,
678 struct perf_evsel *evsel
679 __maybe_unused, double avg)
680 {
681 double total, ratio = 0.0;
682 const char *color;
683
684 total = avg_stats(&runtime_cycles_stats[cpu]);
685
686 if (total)
687 ratio = avg / total * 100.0;
688
689 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
690
691 fprintf(output, " # ");
692 color_fprintf(output, color, "%6.2f%%", ratio);
693 fprintf(output, " frontend cycles idle ");
694 }
695
696 static void print_stalled_cycles_backend(int cpu,
697 struct perf_evsel *evsel
698 __maybe_unused, double avg)
699 {
700 double total, ratio = 0.0;
701 const char *color;
702
703 total = avg_stats(&runtime_cycles_stats[cpu]);
704
705 if (total)
706 ratio = avg / total * 100.0;
707
708 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
709
710 fprintf(output, " # ");
711 color_fprintf(output, color, "%6.2f%%", ratio);
712 fprintf(output, " backend cycles idle ");
713 }
714
715 static void print_branch_misses(int cpu,
716 struct perf_evsel *evsel __maybe_unused,
717 double avg)
718 {
719 double total, ratio = 0.0;
720 const char *color;
721
722 total = avg_stats(&runtime_branches_stats[cpu]);
723
724 if (total)
725 ratio = avg / total * 100.0;
726
727 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
728
729 fprintf(output, " # ");
730 color_fprintf(output, color, "%6.2f%%", ratio);
731 fprintf(output, " of all branches ");
732 }
733
734 static void print_l1_dcache_misses(int cpu,
735 struct perf_evsel *evsel __maybe_unused,
736 double avg)
737 {
738 double total, ratio = 0.0;
739 const char *color;
740
741 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
742
743 if (total)
744 ratio = avg / total * 100.0;
745
746 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
747
748 fprintf(output, " # ");
749 color_fprintf(output, color, "%6.2f%%", ratio);
750 fprintf(output, " of all L1-dcache hits ");
751 }
752
753 static void print_l1_icache_misses(int cpu,
754 struct perf_evsel *evsel __maybe_unused,
755 double avg)
756 {
757 double total, ratio = 0.0;
758 const char *color;
759
760 total = avg_stats(&runtime_l1_icache_stats[cpu]);
761
762 if (total)
763 ratio = avg / total * 100.0;
764
765 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
766
767 fprintf(output, " # ");
768 color_fprintf(output, color, "%6.2f%%", ratio);
769 fprintf(output, " of all L1-icache hits ");
770 }
771
772 static void print_dtlb_cache_misses(int cpu,
773 struct perf_evsel *evsel __maybe_unused,
774 double avg)
775 {
776 double total, ratio = 0.0;
777 const char *color;
778
779 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
780
781 if (total)
782 ratio = avg / total * 100.0;
783
784 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
785
786 fprintf(output, " # ");
787 color_fprintf(output, color, "%6.2f%%", ratio);
788 fprintf(output, " of all dTLB cache hits ");
789 }
790
791 static void print_itlb_cache_misses(int cpu,
792 struct perf_evsel *evsel __maybe_unused,
793 double avg)
794 {
795 double total, ratio = 0.0;
796 const char *color;
797
798 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
799
800 if (total)
801 ratio = avg / total * 100.0;
802
803 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
804
805 fprintf(output, " # ");
806 color_fprintf(output, color, "%6.2f%%", ratio);
807 fprintf(output, " of all iTLB cache hits ");
808 }
809
810 static void print_ll_cache_misses(int cpu,
811 struct perf_evsel *evsel __maybe_unused,
812 double avg)
813 {
814 double total, ratio = 0.0;
815 const char *color;
816
817 total = avg_stats(&runtime_ll_cache_stats[cpu]);
818
819 if (total)
820 ratio = avg / total * 100.0;
821
822 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
823
824 fprintf(output, " # ");
825 color_fprintf(output, color, "%6.2f%%", ratio);
826 fprintf(output, " of all LL-cache hits ");
827 }
828
829 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
830 {
831 double total, ratio = 0.0;
832 const char *fmt;
833
834 if (csv_output)
835 fmt = "%.0f%s%s";
836 else if (big_num)
837 fmt = "%'18.0f%s%-25s";
838 else
839 fmt = "%18.0f%s%-25s";
840
841 aggr_printout(evsel, cpu, nr);
842
843 if (aggr_mode == AGGR_GLOBAL)
844 cpu = 0;
845
846 fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
847
848 if (evsel->cgrp)
849 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
850
851 if (csv_output || interval)
852 return;
853
854 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
855 total = avg_stats(&runtime_cycles_stats[cpu]);
856 if (total)
857 ratio = avg / total;
858
859 fprintf(output, " # %5.2f insns per cycle ", ratio);
860
861 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
862 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
863
864 if (total && avg) {
865 ratio = total / avg;
866 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
867 }
868
869 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
870 runtime_branches_stats[cpu].n != 0) {
871 print_branch_misses(cpu, evsel, avg);
872 } else if (
873 evsel->attr.type == PERF_TYPE_HW_CACHE &&
874 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
875 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
876 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
877 runtime_l1_dcache_stats[cpu].n != 0) {
878 print_l1_dcache_misses(cpu, evsel, avg);
879 } else if (
880 evsel->attr.type == PERF_TYPE_HW_CACHE &&
881 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
882 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
883 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
884 runtime_l1_icache_stats[cpu].n != 0) {
885 print_l1_icache_misses(cpu, evsel, avg);
886 } else if (
887 evsel->attr.type == PERF_TYPE_HW_CACHE &&
888 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
889 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
890 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
891 runtime_dtlb_cache_stats[cpu].n != 0) {
892 print_dtlb_cache_misses(cpu, evsel, avg);
893 } else if (
894 evsel->attr.type == PERF_TYPE_HW_CACHE &&
895 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
896 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
897 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
898 runtime_itlb_cache_stats[cpu].n != 0) {
899 print_itlb_cache_misses(cpu, evsel, avg);
900 } else if (
901 evsel->attr.type == PERF_TYPE_HW_CACHE &&
902 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
903 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
904 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
905 runtime_ll_cache_stats[cpu].n != 0) {
906 print_ll_cache_misses(cpu, evsel, avg);
907 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
908 runtime_cacherefs_stats[cpu].n != 0) {
909 total = avg_stats(&runtime_cacherefs_stats[cpu]);
910
911 if (total)
912 ratio = avg * 100 / total;
913
914 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
915
916 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
917 print_stalled_cycles_frontend(cpu, evsel, avg);
918 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
919 print_stalled_cycles_backend(cpu, evsel, avg);
920 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
921 total = avg_stats(&runtime_nsecs_stats[cpu]);
922
923 if (total)
924 ratio = 1.0 * avg / total;
925
926 fprintf(output, " # %8.3f GHz ", ratio);
927 } else if (runtime_nsecs_stats[cpu].n != 0) {
928 char unit = 'M';
929
930 total = avg_stats(&runtime_nsecs_stats[cpu]);
931
932 if (total)
933 ratio = 1000.0 * avg / total;
934 if (ratio < 0.001) {
935 ratio *= 1000;
936 unit = 'K';
937 }
938
939 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
940 } else {
941 fprintf(output, " ");
942 }
943 }
944
945 static void print_aggr(char *prefix)
946 {
947 struct perf_evsel *counter;
948 int cpu, cpu2, s, s2, id, nr;
949 u64 ena, run, val;
950
951 if (!(aggr_map || aggr_get_id))
952 return;
953
954 for (s = 0; s < aggr_map->nr; s++) {
955 id = aggr_map->map[s];
956 list_for_each_entry(counter, &evsel_list->entries, node) {
957 val = ena = run = 0;
958 nr = 0;
959 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
960 cpu2 = perf_evsel__cpus(counter)->map[cpu];
961 s2 = aggr_get_id(evsel_list->cpus, cpu2);
962 if (s2 != id)
963 continue;
964 val += counter->counts->cpu[cpu].val;
965 ena += counter->counts->cpu[cpu].ena;
966 run += counter->counts->cpu[cpu].run;
967 nr++;
968 }
969 if (prefix)
970 fprintf(output, "%s", prefix);
971
972 if (run == 0 || ena == 0) {
973 aggr_printout(counter, id, nr);
974
975 fprintf(output, "%*s%s%*s",
976 csv_output ? 0 : 18,
977 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
978 csv_sep,
979 csv_output ? 0 : -24,
980 perf_evsel__name(counter));
981
982 if (counter->cgrp)
983 fprintf(output, "%s%s",
984 csv_sep, counter->cgrp->name);
985
986 fputc('\n', output);
987 continue;
988 }
989
990 if (nsec_counter(counter))
991 nsec_printout(id, nr, counter, val);
992 else
993 abs_printout(id, nr, counter, val);
994
995 if (!csv_output) {
996 print_noise(counter, 1.0);
997
998 if (run != ena)
999 fprintf(output, " (%.2f%%)",
1000 100.0 * run / ena);
1001 }
1002 fputc('\n', output);
1003 }
1004 }
1005 }
1006
1007 /*
1008 * Print out the results of a single counter:
1009 * aggregated counts in system-wide mode
1010 */
1011 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1012 {
1013 struct perf_stat *ps = counter->priv;
1014 double avg = avg_stats(&ps->res_stats[0]);
1015 int scaled = counter->counts->scaled;
1016
1017 if (prefix)
1018 fprintf(output, "%s", prefix);
1019
1020 if (scaled == -1) {
1021 fprintf(output, "%*s%s%*s",
1022 csv_output ? 0 : 18,
1023 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1024 csv_sep,
1025 csv_output ? 0 : -24,
1026 perf_evsel__name(counter));
1027
1028 if (counter->cgrp)
1029 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1030
1031 fputc('\n', output);
1032 return;
1033 }
1034
1035 if (nsec_counter(counter))
1036 nsec_printout(-1, 0, counter, avg);
1037 else
1038 abs_printout(-1, 0, counter, avg);
1039
1040 print_noise(counter, avg);
1041
1042 if (csv_output) {
1043 fputc('\n', output);
1044 return;
1045 }
1046
1047 if (scaled) {
1048 double avg_enabled, avg_running;
1049
1050 avg_enabled = avg_stats(&ps->res_stats[1]);
1051 avg_running = avg_stats(&ps->res_stats[2]);
1052
1053 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1054 }
1055 fprintf(output, "\n");
1056 }
1057
1058 /*
1059 * Print out the results of a single counter:
1060 * does not use aggregated count in system-wide
1061 */
1062 static void print_counter(struct perf_evsel *counter, char *prefix)
1063 {
1064 u64 ena, run, val;
1065 int cpu;
1066
1067 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1068 val = counter->counts->cpu[cpu].val;
1069 ena = counter->counts->cpu[cpu].ena;
1070 run = counter->counts->cpu[cpu].run;
1071
1072 if (prefix)
1073 fprintf(output, "%s", prefix);
1074
1075 if (run == 0 || ena == 0) {
1076 fprintf(output, "CPU%*d%s%*s%s%*s",
1077 csv_output ? 0 : -4,
1078 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1079 csv_output ? 0 : 18,
1080 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1081 csv_sep,
1082 csv_output ? 0 : -24,
1083 perf_evsel__name(counter));
1084
1085 if (counter->cgrp)
1086 fprintf(output, "%s%s",
1087 csv_sep, counter->cgrp->name);
1088
1089 fputc('\n', output);
1090 continue;
1091 }
1092
1093 if (nsec_counter(counter))
1094 nsec_printout(cpu, 0, counter, val);
1095 else
1096 abs_printout(cpu, 0, counter, val);
1097
1098 if (!csv_output) {
1099 print_noise(counter, 1.0);
1100
1101 if (run != ena)
1102 fprintf(output, " (%.2f%%)",
1103 100.0 * run / ena);
1104 }
1105 fputc('\n', output);
1106 }
1107 }
1108
1109 static void print_stat(int argc, const char **argv)
1110 {
1111 struct perf_evsel *counter;
1112 int i;
1113
1114 fflush(stdout);
1115
1116 if (!csv_output) {
1117 fprintf(output, "\n");
1118 fprintf(output, " Performance counter stats for ");
1119 if (!perf_target__has_task(&target)) {
1120 fprintf(output, "\'%s", argv[0]);
1121 for (i = 1; i < argc; i++)
1122 fprintf(output, " %s", argv[i]);
1123 } else if (target.pid)
1124 fprintf(output, "process id \'%s", target.pid);
1125 else
1126 fprintf(output, "thread id \'%s", target.tid);
1127
1128 fprintf(output, "\'");
1129 if (run_count > 1)
1130 fprintf(output, " (%d runs)", run_count);
1131 fprintf(output, ":\n\n");
1132 }
1133
1134 switch (aggr_mode) {
1135 case AGGR_CORE:
1136 case AGGR_SOCKET:
1137 print_aggr(NULL);
1138 break;
1139 case AGGR_GLOBAL:
1140 list_for_each_entry(counter, &evsel_list->entries, node)
1141 print_counter_aggr(counter, NULL);
1142 break;
1143 case AGGR_NONE:
1144 list_for_each_entry(counter, &evsel_list->entries, node)
1145 print_counter(counter, NULL);
1146 break;
1147 default:
1148 break;
1149 }
1150
1151 if (!csv_output) {
1152 if (!null_run)
1153 fprintf(output, "\n");
1154 fprintf(output, " %17.9f seconds time elapsed",
1155 avg_stats(&walltime_nsecs_stats)/1e9);
1156 if (run_count > 1) {
1157 fprintf(output, " ");
1158 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1159 avg_stats(&walltime_nsecs_stats));
1160 }
1161 fprintf(output, "\n\n");
1162 }
1163 }
1164
1165 static volatile int signr = -1;
1166
1167 static void skip_signal(int signo)
1168 {
1169 if ((child_pid == -1) || interval)
1170 done = 1;
1171
1172 signr = signo;
1173 /*
1174 * render child_pid harmless
1175 * won't send SIGTERM to a random
1176 * process in case of race condition
1177 * and fast PID recycling
1178 */
1179 child_pid = -1;
1180 }
1181
1182 static void sig_atexit(void)
1183 {
1184 sigset_t set, oset;
1185
1186 /*
1187 * avoid race condition with SIGCHLD handler
1188 * in skip_signal() which is modifying child_pid
1189 * goal is to avoid send SIGTERM to a random
1190 * process
1191 */
1192 sigemptyset(&set);
1193 sigaddset(&set, SIGCHLD);
1194 sigprocmask(SIG_BLOCK, &set, &oset);
1195
1196 if (child_pid != -1)
1197 kill(child_pid, SIGTERM);
1198
1199 sigprocmask(SIG_SETMASK, &oset, NULL);
1200
1201 if (signr == -1)
1202 return;
1203
1204 signal(signr, SIG_DFL);
1205 kill(getpid(), signr);
1206 }
1207
1208 static int stat__set_big_num(const struct option *opt __maybe_unused,
1209 const char *s __maybe_unused, int unset)
1210 {
1211 big_num_opt = unset ? 0 : 1;
1212 return 0;
1213 }
1214
1215 static int perf_stat_init_aggr_mode(void)
1216 {
1217 switch (aggr_mode) {
1218 case AGGR_SOCKET:
1219 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1220 perror("cannot build socket map");
1221 return -1;
1222 }
1223 aggr_get_id = cpu_map__get_socket;
1224 break;
1225 case AGGR_CORE:
1226 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1227 perror("cannot build core map");
1228 return -1;
1229 }
1230 aggr_get_id = cpu_map__get_core;
1231 break;
1232 case AGGR_NONE:
1233 case AGGR_GLOBAL:
1234 default:
1235 break;
1236 }
1237 return 0;
1238 }
1239
1240
1241 /*
1242 * Add default attributes, if there were no attributes specified or
1243 * if -d/--detailed, -d -d or -d -d -d is used:
1244 */
1245 static int add_default_attributes(void)
1246 {
1247 struct perf_event_attr default_attrs[] = {
1248
1249 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1250 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1251 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1252 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1253
1254 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1255 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1256 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1257 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1258 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1259 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1260
1261 };
1262
1263 /*
1264 * Detailed stats (-d), covering the L1 and last level data caches:
1265 */
1266 struct perf_event_attr detailed_attrs[] = {
1267
1268 { .type = PERF_TYPE_HW_CACHE,
1269 .config =
1270 PERF_COUNT_HW_CACHE_L1D << 0 |
1271 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1272 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1273
1274 { .type = PERF_TYPE_HW_CACHE,
1275 .config =
1276 PERF_COUNT_HW_CACHE_L1D << 0 |
1277 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1278 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1279
1280 { .type = PERF_TYPE_HW_CACHE,
1281 .config =
1282 PERF_COUNT_HW_CACHE_LL << 0 |
1283 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1284 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1285
1286 { .type = PERF_TYPE_HW_CACHE,
1287 .config =
1288 PERF_COUNT_HW_CACHE_LL << 0 |
1289 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1290 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1291 };
1292
1293 /*
1294 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1295 */
1296 struct perf_event_attr very_detailed_attrs[] = {
1297
1298 { .type = PERF_TYPE_HW_CACHE,
1299 .config =
1300 PERF_COUNT_HW_CACHE_L1I << 0 |
1301 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1302 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1303
1304 { .type = PERF_TYPE_HW_CACHE,
1305 .config =
1306 PERF_COUNT_HW_CACHE_L1I << 0 |
1307 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1308 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1309
1310 { .type = PERF_TYPE_HW_CACHE,
1311 .config =
1312 PERF_COUNT_HW_CACHE_DTLB << 0 |
1313 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1314 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1315
1316 { .type = PERF_TYPE_HW_CACHE,
1317 .config =
1318 PERF_COUNT_HW_CACHE_DTLB << 0 |
1319 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1320 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1321
1322 { .type = PERF_TYPE_HW_CACHE,
1323 .config =
1324 PERF_COUNT_HW_CACHE_ITLB << 0 |
1325 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1326 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1327
1328 { .type = PERF_TYPE_HW_CACHE,
1329 .config =
1330 PERF_COUNT_HW_CACHE_ITLB << 0 |
1331 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1332 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1333
1334 };
1335
1336 /*
1337 * Very, very detailed stats (-d -d -d), adding prefetch events:
1338 */
1339 struct perf_event_attr very_very_detailed_attrs[] = {
1340
1341 { .type = PERF_TYPE_HW_CACHE,
1342 .config =
1343 PERF_COUNT_HW_CACHE_L1D << 0 |
1344 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1345 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1346
1347 { .type = PERF_TYPE_HW_CACHE,
1348 .config =
1349 PERF_COUNT_HW_CACHE_L1D << 0 |
1350 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1351 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1352 };
1353
1354 /* Set attrs if no event is selected and !null_run: */
1355 if (null_run)
1356 return 0;
1357
1358 if (!evsel_list->nr_entries) {
1359 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1360 return -1;
1361 }
1362
1363 /* Detailed events get appended to the event list: */
1364
1365 if (detailed_run < 1)
1366 return 0;
1367
1368 /* Append detailed run extra attributes: */
1369 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1370 return -1;
1371
1372 if (detailed_run < 2)
1373 return 0;
1374
1375 /* Append very detailed run extra attributes: */
1376 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1377 return -1;
1378
1379 if (detailed_run < 3)
1380 return 0;
1381
1382 /* Append very, very detailed run extra attributes: */
1383 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1384 }
1385
1386 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1387 {
1388 bool append_file = false;
1389 int output_fd = 0;
1390 const char *output_name = NULL;
1391 const struct option options[] = {
1392 OPT_CALLBACK('e', "event", &evsel_list, "event",
1393 "event selector. use 'perf list' to list available events",
1394 parse_events_option),
1395 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1396 "event filter", parse_filter),
1397 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1398 "child tasks do not inherit counters"),
1399 OPT_STRING('p', "pid", &target.pid, "pid",
1400 "stat events on existing process id"),
1401 OPT_STRING('t', "tid", &target.tid, "tid",
1402 "stat events on existing thread id"),
1403 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1404 "system-wide collection from all CPUs"),
1405 OPT_BOOLEAN('g', "group", &group,
1406 "put the counters into a counter group"),
1407 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1408 OPT_INCR('v', "verbose", &verbose,
1409 "be more verbose (show counter open errors, etc)"),
1410 OPT_INTEGER('r', "repeat", &run_count,
1411 "repeat command and print average + stddev (max: 100, forever: 0)"),
1412 OPT_BOOLEAN('n', "null", &null_run,
1413 "null run - dont start any counters"),
1414 OPT_INCR('d', "detailed", &detailed_run,
1415 "detailed run - start a lot of events"),
1416 OPT_BOOLEAN('S', "sync", &sync_run,
1417 "call sync() before starting a run"),
1418 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1419 "print large numbers with thousands\' separators",
1420 stat__set_big_num),
1421 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1422 "list of cpus to monitor in system-wide"),
1423 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1424 "disable CPU count aggregation", AGGR_NONE),
1425 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1426 "print counts with custom separator"),
1427 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1428 "monitor event in cgroup name only", parse_cgroups),
1429 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1430 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1431 OPT_INTEGER(0, "log-fd", &output_fd,
1432 "log output to fd, instead of stderr"),
1433 OPT_STRING(0, "pre", &pre_cmd, "command",
1434 "command to run prior to the measured command"),
1435 OPT_STRING(0, "post", &post_cmd, "command",
1436 "command to run after to the measured command"),
1437 OPT_UINTEGER('I', "interval-print", &interval,
1438 "print counts at regular interval in ms (>= 100)"),
1439 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1440 "aggregate counts per processor socket", AGGR_SOCKET),
1441 OPT_SET_UINT(0, "per-core", &aggr_mode,
1442 "aggregate counts per physical processor core", AGGR_CORE),
1443 OPT_UINTEGER('D', "delay", &initial_delay,
1444 "ms to wait before starting measurement after program start"),
1445 OPT_END()
1446 };
1447 const char * const stat_usage[] = {
1448 "perf stat [<options>] [<command>]",
1449 NULL
1450 };
1451 int status = -ENOMEM, run_idx;
1452 const char *mode;
1453
1454 setlocale(LC_ALL, "");
1455
1456 evsel_list = perf_evlist__new();
1457 if (evsel_list == NULL)
1458 return -ENOMEM;
1459
1460 argc = parse_options(argc, argv, options, stat_usage,
1461 PARSE_OPT_STOP_AT_NON_OPTION);
1462
1463 output = stderr;
1464 if (output_name && strcmp(output_name, "-"))
1465 output = NULL;
1466
1467 if (output_name && output_fd) {
1468 fprintf(stderr, "cannot use both --output and --log-fd\n");
1469 usage_with_options(stat_usage, options);
1470 }
1471
1472 if (output_fd < 0) {
1473 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1474 usage_with_options(stat_usage, options);
1475 }
1476
1477 if (!output) {
1478 struct timespec tm;
1479 mode = append_file ? "a" : "w";
1480
1481 output = fopen(output_name, mode);
1482 if (!output) {
1483 perror("failed to create output file");
1484 return -1;
1485 }
1486 clock_gettime(CLOCK_REALTIME, &tm);
1487 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1488 } else if (output_fd > 0) {
1489 mode = append_file ? "a" : "w";
1490 output = fdopen(output_fd, mode);
1491 if (!output) {
1492 perror("Failed opening logfd");
1493 return -errno;
1494 }
1495 }
1496
1497 if (csv_sep) {
1498 csv_output = true;
1499 if (!strcmp(csv_sep, "\\t"))
1500 csv_sep = "\t";
1501 } else
1502 csv_sep = DEFAULT_SEPARATOR;
1503
1504 /*
1505 * let the spreadsheet do the pretty-printing
1506 */
1507 if (csv_output) {
1508 /* User explicitly passed -B? */
1509 if (big_num_opt == 1) {
1510 fprintf(stderr, "-B option not supported with -x\n");
1511 usage_with_options(stat_usage, options);
1512 } else /* Nope, so disable big number formatting */
1513 big_num = false;
1514 } else if (big_num_opt == 0) /* User passed --no-big-num */
1515 big_num = false;
1516
1517 if (!argc && !perf_target__has_task(&target))
1518 usage_with_options(stat_usage, options);
1519 if (run_count < 0) {
1520 usage_with_options(stat_usage, options);
1521 } else if (run_count == 0) {
1522 forever = true;
1523 run_count = 1;
1524 }
1525
1526 /* no_aggr, cgroup are for system-wide only */
1527 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
1528 && !perf_target__has_cpu(&target)) {
1529 fprintf(stderr, "both cgroup and no-aggregation "
1530 "modes only available in system-wide mode\n");
1531
1532 usage_with_options(stat_usage, options);
1533 return -1;
1534 }
1535
1536 if (add_default_attributes())
1537 goto out;
1538
1539 perf_target__validate(&target);
1540
1541 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1542 if (perf_target__has_task(&target))
1543 pr_err("Problems finding threads of monitor\n");
1544 if (perf_target__has_cpu(&target))
1545 perror("failed to parse CPUs map");
1546
1547 usage_with_options(stat_usage, options);
1548 return -1;
1549 }
1550 if (interval && interval < 100) {
1551 pr_err("print interval must be >= 100ms\n");
1552 usage_with_options(stat_usage, options);
1553 return -1;
1554 }
1555
1556 if (perf_evlist__alloc_stats(evsel_list, interval))
1557 goto out_free_maps;
1558
1559 if (perf_stat_init_aggr_mode())
1560 goto out;
1561
1562 /*
1563 * We dont want to block the signals - that would cause
1564 * child tasks to inherit that and Ctrl-C would not work.
1565 * What we want is for Ctrl-C to work in the exec()-ed
1566 * task, but being ignored by perf stat itself:
1567 */
1568 atexit(sig_atexit);
1569 if (!forever)
1570 signal(SIGINT, skip_signal);
1571 signal(SIGCHLD, skip_signal);
1572 signal(SIGALRM, skip_signal);
1573 signal(SIGABRT, skip_signal);
1574
1575 status = 0;
1576 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1577 if (run_count != 1 && verbose)
1578 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1579 run_idx + 1);
1580
1581 status = run_perf_stat(argc, argv);
1582 if (forever && status != -1) {
1583 print_stat(argc, argv);
1584 perf_stat__reset_stats(evsel_list);
1585 }
1586 }
1587
1588 if (!forever && status != -1 && !interval)
1589 print_stat(argc, argv);
1590
1591 perf_evlist__free_stats(evsel_list);
1592 out_free_maps:
1593 perf_evlist__delete_maps(evsel_list);
1594 out:
1595 perf_evlist__delete(evsel_list);
1596 return status;
1597 }
Linux kernel - Deliverables
This page took 0.063583 seconds and 5 git commands to generate.