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[GitHub/mt8127/android_kernel_alcatel_ttab.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 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 bool forever = false;
104 static struct timespec ref_time;
105 static struct cpu_map *aggr_map;
106 static int (*aggr_get_id)(struct cpu_map *m, int cpu);
107
108 static volatile int done = 0;
109
110 struct perf_stat {
111 struct stats res_stats[3];
112 };
113
114 static inline void diff_timespec(struct timespec *r, struct timespec *a,
115 struct timespec *b)
116 {
117 r->tv_sec = a->tv_sec - b->tv_sec;
118 if (a->tv_nsec < b->tv_nsec) {
119 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
120 r->tv_sec--;
121 } else {
122 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
123 }
124 }
125
126 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
127 {
128 return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
129 }
130
131 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
132 {
133 return perf_evsel__cpus(evsel)->nr;
134 }
135
136 static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
137 {
138 memset(evsel->priv, 0, sizeof(struct perf_stat));
139 }
140
141 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
142 {
143 evsel->priv = zalloc(sizeof(struct perf_stat));
144 return evsel->priv == NULL ? -ENOMEM : 0;
145 }
146
147 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
148 {
149 free(evsel->priv);
150 evsel->priv = NULL;
151 }
152
153 static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
154 {
155 void *addr;
156 size_t sz;
157
158 sz = sizeof(*evsel->counts) +
159 (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
160
161 addr = zalloc(sz);
162 if (!addr)
163 return -ENOMEM;
164
165 evsel->prev_raw_counts = addr;
166
167 return 0;
168 }
169
170 static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
171 {
172 free(evsel->prev_raw_counts);
173 evsel->prev_raw_counts = NULL;
174 }
175
176 static void perf_evlist__free_stats(struct perf_evlist *evlist)
177 {
178 struct perf_evsel *evsel;
179
180 list_for_each_entry(evsel, &evlist->entries, node) {
181 perf_evsel__free_stat_priv(evsel);
182 perf_evsel__free_counts(evsel);
183 perf_evsel__free_prev_raw_counts(evsel);
184 }
185 }
186
187 static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
188 {
189 struct perf_evsel *evsel;
190
191 list_for_each_entry(evsel, &evlist->entries, node) {
192 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
193 perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
194 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
195 goto out_free;
196 }
197
198 return 0;
199
200 out_free:
201 perf_evlist__free_stats(evlist);
202 return -1;
203 }
204
205 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
206 static struct stats runtime_cycles_stats[MAX_NR_CPUS];
207 static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
208 static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
209 static struct stats runtime_branches_stats[MAX_NR_CPUS];
210 static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
211 static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
212 static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
213 static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
214 static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
215 static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
216 static struct stats walltime_nsecs_stats;
217
218 static void perf_stat__reset_stats(struct perf_evlist *evlist)
219 {
220 struct perf_evsel *evsel;
221
222 list_for_each_entry(evsel, &evlist->entries, node) {
223 perf_evsel__reset_stat_priv(evsel);
224 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
225 }
226
227 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
228 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
229 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
230 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
231 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
232 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
233 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
234 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
235 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
236 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
237 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
238 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
239 }
240
241 static int create_perf_stat_counter(struct perf_evsel *evsel)
242 {
243 struct perf_event_attr *attr = &evsel->attr;
244
245 if (scale)
246 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
247 PERF_FORMAT_TOTAL_TIME_RUNNING;
248
249 attr->inherit = !no_inherit;
250
251 if (perf_target__has_cpu(&target))
252 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
253
254 if (!perf_target__has_task(&target) &&
255 perf_evsel__is_group_leader(evsel)) {
256 attr->disabled = 1;
257 attr->enable_on_exec = 1;
258 }
259
260 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
261 }
262
263 /*
264 * Does the counter have nsecs as a unit?
265 */
266 static inline int nsec_counter(struct perf_evsel *evsel)
267 {
268 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
269 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
270 return 1;
271
272 return 0;
273 }
274
275 /*
276 * Update various tracking values we maintain to print
277 * more semantic information such as miss/hit ratios,
278 * instruction rates, etc:
279 */
280 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
281 {
282 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
283 update_stats(&runtime_nsecs_stats[0], count[0]);
284 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
285 update_stats(&runtime_cycles_stats[0], count[0]);
286 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
287 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
288 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
289 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
290 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
291 update_stats(&runtime_branches_stats[0], count[0]);
292 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
293 update_stats(&runtime_cacherefs_stats[0], count[0]);
294 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
295 update_stats(&runtime_l1_dcache_stats[0], count[0]);
296 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
297 update_stats(&runtime_l1_icache_stats[0], count[0]);
298 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
299 update_stats(&runtime_ll_cache_stats[0], count[0]);
300 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
301 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
302 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
303 update_stats(&runtime_itlb_cache_stats[0], count[0]);
304 }
305
306 /*
307 * Read out the results of a single counter:
308 * aggregate counts across CPUs in system-wide mode
309 */
310 static int read_counter_aggr(struct perf_evsel *counter)
311 {
312 struct perf_stat *ps = counter->priv;
313 u64 *count = counter->counts->aggr.values;
314 int i;
315
316 if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
317 thread_map__nr(evsel_list->threads), scale) < 0)
318 return -1;
319
320 for (i = 0; i < 3; i++)
321 update_stats(&ps->res_stats[i], count[i]);
322
323 if (verbose) {
324 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
325 perf_evsel__name(counter), count[0], count[1], count[2]);
326 }
327
328 /*
329 * Save the full runtime - to allow normalization during printout:
330 */
331 update_shadow_stats(counter, count);
332
333 return 0;
334 }
335
336 /*
337 * Read out the results of a single counter:
338 * do not aggregate counts across CPUs in system-wide mode
339 */
340 static int read_counter(struct perf_evsel *counter)
341 {
342 u64 *count;
343 int cpu;
344
345 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
346 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
347 return -1;
348
349 count = counter->counts->cpu[cpu].values;
350
351 update_shadow_stats(counter, count);
352 }
353
354 return 0;
355 }
356
357 static void print_interval(void)
358 {
359 static int num_print_interval;
360 struct perf_evsel *counter;
361 struct perf_stat *ps;
362 struct timespec ts, rs;
363 char prefix[64];
364
365 if (aggr_mode == AGGR_GLOBAL) {
366 list_for_each_entry(counter, &evsel_list->entries, node) {
367 ps = counter->priv;
368 memset(ps->res_stats, 0, sizeof(ps->res_stats));
369 read_counter_aggr(counter);
370 }
371 } else {
372 list_for_each_entry(counter, &evsel_list->entries, node) {
373 ps = counter->priv;
374 memset(ps->res_stats, 0, sizeof(ps->res_stats));
375 read_counter(counter);
376 }
377 }
378
379 clock_gettime(CLOCK_MONOTONIC, &ts);
380 diff_timespec(&rs, &ts, &ref_time);
381 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
382
383 if (num_print_interval == 0 && !csv_output) {
384 switch (aggr_mode) {
385 case AGGR_SOCKET:
386 fprintf(output, "# time socket cpus counts events\n");
387 break;
388 case AGGR_CORE:
389 fprintf(output, "# time core cpus counts events\n");
390 break;
391 case AGGR_NONE:
392 fprintf(output, "# time CPU counts events\n");
393 break;
394 case AGGR_GLOBAL:
395 default:
396 fprintf(output, "# time counts events\n");
397 }
398 }
399
400 if (++num_print_interval == 25)
401 num_print_interval = 0;
402
403 switch (aggr_mode) {
404 case AGGR_CORE:
405 case AGGR_SOCKET:
406 print_aggr(prefix);
407 break;
408 case AGGR_NONE:
409 list_for_each_entry(counter, &evsel_list->entries, node)
410 print_counter(counter, prefix);
411 break;
412 case AGGR_GLOBAL:
413 default:
414 list_for_each_entry(counter, &evsel_list->entries, node)
415 print_counter_aggr(counter, prefix);
416 }
417 }
418
419 static int __run_perf_stat(int argc, const char **argv)
420 {
421 char msg[512];
422 unsigned long long t0, t1;
423 struct perf_evsel *counter;
424 struct timespec ts;
425 int status = 0;
426 const bool forks = (argc > 0);
427
428 if (interval) {
429 ts.tv_sec = interval / 1000;
430 ts.tv_nsec = (interval % 1000) * 1000000;
431 } else {
432 ts.tv_sec = 1;
433 ts.tv_nsec = 0;
434 }
435
436 if (forks) {
437 if (perf_evlist__prepare_workload(evsel_list, &target, argv,
438 false, false) < 0) {
439 perror("failed to prepare workload");
440 return -1;
441 }
442 }
443
444 if (group)
445 perf_evlist__set_leader(evsel_list);
446
447 list_for_each_entry(counter, &evsel_list->entries, node) {
448 if (create_perf_stat_counter(counter) < 0) {
449 /*
450 * PPC returns ENXIO for HW counters until 2.6.37
451 * (behavior changed with commit b0a873e).
452 */
453 if (errno == EINVAL || errno == ENOSYS ||
454 errno == ENOENT || errno == EOPNOTSUPP ||
455 errno == ENXIO) {
456 if (verbose)
457 ui__warning("%s event is not supported by the kernel.\n",
458 perf_evsel__name(counter));
459 counter->supported = false;
460 continue;
461 }
462
463 perf_evsel__open_strerror(counter, &target,
464 errno, msg, sizeof(msg));
465 ui__error("%s\n", msg);
466
467 if (child_pid != -1)
468 kill(child_pid, SIGTERM);
469
470 return -1;
471 }
472 counter->supported = true;
473 }
474
475 if (perf_evlist__apply_filters(evsel_list)) {
476 error("failed to set filter with %d (%s)\n", errno,
477 strerror(errno));
478 return -1;
479 }
480
481 /*
482 * Enable counters and exec the command:
483 */
484 t0 = rdclock();
485 clock_gettime(CLOCK_MONOTONIC, &ref_time);
486
487 if (forks) {
488 perf_evlist__start_workload(evsel_list);
489
490 if (interval) {
491 while (!waitpid(child_pid, &status, WNOHANG)) {
492 nanosleep(&ts, NULL);
493 print_interval();
494 }
495 }
496 wait(&status);
497 if (WIFSIGNALED(status))
498 psignal(WTERMSIG(status), argv[0]);
499 } else {
500 while (!done) {
501 nanosleep(&ts, NULL);
502 if (interval)
503 print_interval();
504 }
505 }
506
507 t1 = rdclock();
508
509 update_stats(&walltime_nsecs_stats, t1 - t0);
510
511 if (aggr_mode == AGGR_GLOBAL) {
512 list_for_each_entry(counter, &evsel_list->entries, node) {
513 read_counter_aggr(counter);
514 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
515 thread_map__nr(evsel_list->threads));
516 }
517 } else {
518 list_for_each_entry(counter, &evsel_list->entries, node) {
519 read_counter(counter);
520 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
521 }
522 }
523
524 return WEXITSTATUS(status);
525 }
526
527 static int run_perf_stat(int argc __maybe_unused, const char **argv)
528 {
529 int ret;
530
531 if (pre_cmd) {
532 ret = system(pre_cmd);
533 if (ret)
534 return ret;
535 }
536
537 if (sync_run)
538 sync();
539
540 ret = __run_perf_stat(argc, argv);
541 if (ret)
542 return ret;
543
544 if (post_cmd) {
545 ret = system(post_cmd);
546 if (ret)
547 return ret;
548 }
549
550 return ret;
551 }
552
553 static void print_noise_pct(double total, double avg)
554 {
555 double pct = rel_stddev_stats(total, avg);
556
557 if (csv_output)
558 fprintf(output, "%s%.2f%%", csv_sep, pct);
559 else if (pct)
560 fprintf(output, " ( +-%6.2f%% )", pct);
561 }
562
563 static void print_noise(struct perf_evsel *evsel, double avg)
564 {
565 struct perf_stat *ps;
566
567 if (run_count == 1)
568 return;
569
570 ps = evsel->priv;
571 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
572 }
573
574 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
575 {
576 switch (aggr_mode) {
577 case AGGR_CORE:
578 fprintf(output, "S%d-C%*d%s%*d%s",
579 cpu_map__id_to_socket(id),
580 csv_output ? 0 : -8,
581 cpu_map__id_to_cpu(id),
582 csv_sep,
583 csv_output ? 0 : 4,
584 nr,
585 csv_sep);
586 break;
587 case AGGR_SOCKET:
588 fprintf(output, "S%*d%s%*d%s",
589 csv_output ? 0 : -5,
590 id,
591 csv_sep,
592 csv_output ? 0 : 4,
593 nr,
594 csv_sep);
595 break;
596 case AGGR_NONE:
597 fprintf(output, "CPU%*d%s",
598 csv_output ? 0 : -4,
599 perf_evsel__cpus(evsel)->map[id], csv_sep);
600 break;
601 case AGGR_GLOBAL:
602 default:
603 break;
604 }
605 }
606
607 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
608 {
609 double msecs = avg / 1e6;
610 const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
611
612 aggr_printout(evsel, cpu, nr);
613
614 fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
615
616 if (evsel->cgrp)
617 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
618
619 if (csv_output || interval)
620 return;
621
622 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
623 fprintf(output, " # %8.3f CPUs utilized ",
624 avg / avg_stats(&walltime_nsecs_stats));
625 else
626 fprintf(output, " ");
627 }
628
629 /* used for get_ratio_color() */
630 enum grc_type {
631 GRC_STALLED_CYCLES_FE,
632 GRC_STALLED_CYCLES_BE,
633 GRC_CACHE_MISSES,
634 GRC_MAX_NR
635 };
636
637 static const char *get_ratio_color(enum grc_type type, double ratio)
638 {
639 static const double grc_table[GRC_MAX_NR][3] = {
640 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
641 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
642 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
643 };
644 const char *color = PERF_COLOR_NORMAL;
645
646 if (ratio > grc_table[type][0])
647 color = PERF_COLOR_RED;
648 else if (ratio > grc_table[type][1])
649 color = PERF_COLOR_MAGENTA;
650 else if (ratio > grc_table[type][2])
651 color = PERF_COLOR_YELLOW;
652
653 return color;
654 }
655
656 static void print_stalled_cycles_frontend(int cpu,
657 struct perf_evsel *evsel
658 __maybe_unused, double avg)
659 {
660 double total, ratio = 0.0;
661 const char *color;
662
663 total = avg_stats(&runtime_cycles_stats[cpu]);
664
665 if (total)
666 ratio = avg / total * 100.0;
667
668 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
669
670 fprintf(output, " # ");
671 color_fprintf(output, color, "%6.2f%%", ratio);
672 fprintf(output, " frontend cycles idle ");
673 }
674
675 static void print_stalled_cycles_backend(int cpu,
676 struct perf_evsel *evsel
677 __maybe_unused, double avg)
678 {
679 double total, ratio = 0.0;
680 const char *color;
681
682 total = avg_stats(&runtime_cycles_stats[cpu]);
683
684 if (total)
685 ratio = avg / total * 100.0;
686
687 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
688
689 fprintf(output, " # ");
690 color_fprintf(output, color, "%6.2f%%", ratio);
691 fprintf(output, " backend cycles idle ");
692 }
693
694 static void print_branch_misses(int cpu,
695 struct perf_evsel *evsel __maybe_unused,
696 double avg)
697 {
698 double total, ratio = 0.0;
699 const char *color;
700
701 total = avg_stats(&runtime_branches_stats[cpu]);
702
703 if (total)
704 ratio = avg / total * 100.0;
705
706 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
707
708 fprintf(output, " # ");
709 color_fprintf(output, color, "%6.2f%%", ratio);
710 fprintf(output, " of all branches ");
711 }
712
713 static void print_l1_dcache_misses(int cpu,
714 struct perf_evsel *evsel __maybe_unused,
715 double avg)
716 {
717 double total, ratio = 0.0;
718 const char *color;
719
720 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
721
722 if (total)
723 ratio = avg / total * 100.0;
724
725 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
726
727 fprintf(output, " # ");
728 color_fprintf(output, color, "%6.2f%%", ratio);
729 fprintf(output, " of all L1-dcache hits ");
730 }
731
732 static void print_l1_icache_misses(int cpu,
733 struct perf_evsel *evsel __maybe_unused,
734 double avg)
735 {
736 double total, ratio = 0.0;
737 const char *color;
738
739 total = avg_stats(&runtime_l1_icache_stats[cpu]);
740
741 if (total)
742 ratio = avg / total * 100.0;
743
744 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
745
746 fprintf(output, " # ");
747 color_fprintf(output, color, "%6.2f%%", ratio);
748 fprintf(output, " of all L1-icache hits ");
749 }
750
751 static void print_dtlb_cache_misses(int cpu,
752 struct perf_evsel *evsel __maybe_unused,
753 double avg)
754 {
755 double total, ratio = 0.0;
756 const char *color;
757
758 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
759
760 if (total)
761 ratio = avg / total * 100.0;
762
763 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
764
765 fprintf(output, " # ");
766 color_fprintf(output, color, "%6.2f%%", ratio);
767 fprintf(output, " of all dTLB cache hits ");
768 }
769
770 static void print_itlb_cache_misses(int cpu,
771 struct perf_evsel *evsel __maybe_unused,
772 double avg)
773 {
774 double total, ratio = 0.0;
775 const char *color;
776
777 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
778
779 if (total)
780 ratio = avg / total * 100.0;
781
782 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
783
784 fprintf(output, " # ");
785 color_fprintf(output, color, "%6.2f%%", ratio);
786 fprintf(output, " of all iTLB cache hits ");
787 }
788
789 static void print_ll_cache_misses(int cpu,
790 struct perf_evsel *evsel __maybe_unused,
791 double avg)
792 {
793 double total, ratio = 0.0;
794 const char *color;
795
796 total = avg_stats(&runtime_ll_cache_stats[cpu]);
797
798 if (total)
799 ratio = avg / total * 100.0;
800
801 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
802
803 fprintf(output, " # ");
804 color_fprintf(output, color, "%6.2f%%", ratio);
805 fprintf(output, " of all LL-cache hits ");
806 }
807
808 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
809 {
810 double total, ratio = 0.0;
811 const char *fmt;
812
813 if (csv_output)
814 fmt = "%.0f%s%s";
815 else if (big_num)
816 fmt = "%'18.0f%s%-25s";
817 else
818 fmt = "%18.0f%s%-25s";
819
820 aggr_printout(evsel, cpu, nr);
821
822 if (aggr_mode == AGGR_GLOBAL)
823 cpu = 0;
824
825 fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
826
827 if (evsel->cgrp)
828 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
829
830 if (csv_output || interval)
831 return;
832
833 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
834 total = avg_stats(&runtime_cycles_stats[cpu]);
835 if (total)
836 ratio = avg / total;
837
838 fprintf(output, " # %5.2f insns per cycle ", ratio);
839
840 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
841 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
842
843 if (total && avg) {
844 ratio = total / avg;
845 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
846 }
847
848 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
849 runtime_branches_stats[cpu].n != 0) {
850 print_branch_misses(cpu, evsel, avg);
851 } else if (
852 evsel->attr.type == PERF_TYPE_HW_CACHE &&
853 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
854 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
855 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
856 runtime_l1_dcache_stats[cpu].n != 0) {
857 print_l1_dcache_misses(cpu, evsel, avg);
858 } else if (
859 evsel->attr.type == PERF_TYPE_HW_CACHE &&
860 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
861 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
862 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
863 runtime_l1_icache_stats[cpu].n != 0) {
864 print_l1_icache_misses(cpu, evsel, avg);
865 } else if (
866 evsel->attr.type == PERF_TYPE_HW_CACHE &&
867 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
868 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
869 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
870 runtime_dtlb_cache_stats[cpu].n != 0) {
871 print_dtlb_cache_misses(cpu, evsel, avg);
872 } else if (
873 evsel->attr.type == PERF_TYPE_HW_CACHE &&
874 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
875 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
876 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
877 runtime_itlb_cache_stats[cpu].n != 0) {
878 print_itlb_cache_misses(cpu, evsel, avg);
879 } else if (
880 evsel->attr.type == PERF_TYPE_HW_CACHE &&
881 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
882 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
883 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
884 runtime_ll_cache_stats[cpu].n != 0) {
885 print_ll_cache_misses(cpu, evsel, avg);
886 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
887 runtime_cacherefs_stats[cpu].n != 0) {
888 total = avg_stats(&runtime_cacherefs_stats[cpu]);
889
890 if (total)
891 ratio = avg * 100 / total;
892
893 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
894
895 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
896 print_stalled_cycles_frontend(cpu, evsel, avg);
897 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
898 print_stalled_cycles_backend(cpu, evsel, avg);
899 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
900 total = avg_stats(&runtime_nsecs_stats[cpu]);
901
902 if (total)
903 ratio = 1.0 * avg / total;
904
905 fprintf(output, " # %8.3f GHz ", ratio);
906 } else if (runtime_nsecs_stats[cpu].n != 0) {
907 char unit = 'M';
908
909 total = avg_stats(&runtime_nsecs_stats[cpu]);
910
911 if (total)
912 ratio = 1000.0 * avg / total;
913 if (ratio < 0.001) {
914 ratio *= 1000;
915 unit = 'K';
916 }
917
918 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
919 } else {
920 fprintf(output, " ");
921 }
922 }
923
924 static void print_aggr(char *prefix)
925 {
926 struct perf_evsel *counter;
927 int cpu, s, s2, id, nr;
928 u64 ena, run, val;
929
930 if (!(aggr_map || aggr_get_id))
931 return;
932
933 for (s = 0; s < aggr_map->nr; s++) {
934 id = aggr_map->map[s];
935 list_for_each_entry(counter, &evsel_list->entries, node) {
936 val = ena = run = 0;
937 nr = 0;
938 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
939 s2 = aggr_get_id(evsel_list->cpus, cpu);
940 if (s2 != id)
941 continue;
942 val += counter->counts->cpu[cpu].val;
943 ena += counter->counts->cpu[cpu].ena;
944 run += counter->counts->cpu[cpu].run;
945 nr++;
946 }
947 if (prefix)
948 fprintf(output, "%s", prefix);
949
950 if (run == 0 || ena == 0) {
951 aggr_printout(counter, cpu, nr);
952
953 fprintf(output, "%*s%s%*s",
954 csv_output ? 0 : 18,
955 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
956 csv_sep,
957 csv_output ? 0 : -24,
958 perf_evsel__name(counter));
959
960 if (counter->cgrp)
961 fprintf(output, "%s%s",
962 csv_sep, counter->cgrp->name);
963
964 fputc('\n', output);
965 continue;
966 }
967
968 if (nsec_counter(counter))
969 nsec_printout(id, nr, counter, val);
970 else
971 abs_printout(id, nr, counter, val);
972
973 if (!csv_output) {
974 print_noise(counter, 1.0);
975
976 if (run != ena)
977 fprintf(output, " (%.2f%%)",
978 100.0 * run / ena);
979 }
980 fputc('\n', output);
981 }
982 }
983 }
984
985 /*
986 * Print out the results of a single counter:
987 * aggregated counts in system-wide mode
988 */
989 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
990 {
991 struct perf_stat *ps = counter->priv;
992 double avg = avg_stats(&ps->res_stats[0]);
993 int scaled = counter->counts->scaled;
994
995 if (prefix)
996 fprintf(output, "%s", prefix);
997
998 if (scaled == -1) {
999 fprintf(output, "%*s%s%*s",
1000 csv_output ? 0 : 18,
1001 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1002 csv_sep,
1003 csv_output ? 0 : -24,
1004 perf_evsel__name(counter));
1005
1006 if (counter->cgrp)
1007 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1008
1009 fputc('\n', output);
1010 return;
1011 }
1012
1013 if (nsec_counter(counter))
1014 nsec_printout(-1, 0, counter, avg);
1015 else
1016 abs_printout(-1, 0, counter, avg);
1017
1018 print_noise(counter, avg);
1019
1020 if (csv_output) {
1021 fputc('\n', output);
1022 return;
1023 }
1024
1025 if (scaled) {
1026 double avg_enabled, avg_running;
1027
1028 avg_enabled = avg_stats(&ps->res_stats[1]);
1029 avg_running = avg_stats(&ps->res_stats[2]);
1030
1031 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1032 }
1033 fprintf(output, "\n");
1034 }
1035
1036 /*
1037 * Print out the results of a single counter:
1038 * does not use aggregated count in system-wide
1039 */
1040 static void print_counter(struct perf_evsel *counter, char *prefix)
1041 {
1042 u64 ena, run, val;
1043 int cpu;
1044
1045 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1046 val = counter->counts->cpu[cpu].val;
1047 ena = counter->counts->cpu[cpu].ena;
1048 run = counter->counts->cpu[cpu].run;
1049
1050 if (prefix)
1051 fprintf(output, "%s", prefix);
1052
1053 if (run == 0 || ena == 0) {
1054 fprintf(output, "CPU%*d%s%*s%s%*s",
1055 csv_output ? 0 : -4,
1056 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1057 csv_output ? 0 : 18,
1058 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1059 csv_sep,
1060 csv_output ? 0 : -24,
1061 perf_evsel__name(counter));
1062
1063 if (counter->cgrp)
1064 fprintf(output, "%s%s",
1065 csv_sep, counter->cgrp->name);
1066
1067 fputc('\n', output);
1068 continue;
1069 }
1070
1071 if (nsec_counter(counter))
1072 nsec_printout(cpu, 0, counter, val);
1073 else
1074 abs_printout(cpu, 0, counter, val);
1075
1076 if (!csv_output) {
1077 print_noise(counter, 1.0);
1078
1079 if (run != ena)
1080 fprintf(output, " (%.2f%%)",
1081 100.0 * run / ena);
1082 }
1083 fputc('\n', output);
1084 }
1085 }
1086
1087 static void print_stat(int argc, const char **argv)
1088 {
1089 struct perf_evsel *counter;
1090 int i;
1091
1092 fflush(stdout);
1093
1094 if (!csv_output) {
1095 fprintf(output, "\n");
1096 fprintf(output, " Performance counter stats for ");
1097 if (!perf_target__has_task(&target)) {
1098 fprintf(output, "\'%s", argv[0]);
1099 for (i = 1; i < argc; i++)
1100 fprintf(output, " %s", argv[i]);
1101 } else if (target.pid)
1102 fprintf(output, "process id \'%s", target.pid);
1103 else
1104 fprintf(output, "thread id \'%s", target.tid);
1105
1106 fprintf(output, "\'");
1107 if (run_count > 1)
1108 fprintf(output, " (%d runs)", run_count);
1109 fprintf(output, ":\n\n");
1110 }
1111
1112 switch (aggr_mode) {
1113 case AGGR_CORE:
1114 case AGGR_SOCKET:
1115 print_aggr(NULL);
1116 break;
1117 case AGGR_GLOBAL:
1118 list_for_each_entry(counter, &evsel_list->entries, node)
1119 print_counter_aggr(counter, NULL);
1120 break;
1121 case AGGR_NONE:
1122 list_for_each_entry(counter, &evsel_list->entries, node)
1123 print_counter(counter, NULL);
1124 break;
1125 default:
1126 break;
1127 }
1128
1129 if (!csv_output) {
1130 if (!null_run)
1131 fprintf(output, "\n");
1132 fprintf(output, " %17.9f seconds time elapsed",
1133 avg_stats(&walltime_nsecs_stats)/1e9);
1134 if (run_count > 1) {
1135 fprintf(output, " ");
1136 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1137 avg_stats(&walltime_nsecs_stats));
1138 }
1139 fprintf(output, "\n\n");
1140 }
1141 }
1142
1143 static volatile int signr = -1;
1144
1145 static void skip_signal(int signo)
1146 {
1147 if ((child_pid == -1) || interval)
1148 done = 1;
1149
1150 signr = signo;
1151 }
1152
1153 static void sig_atexit(void)
1154 {
1155 if (child_pid != -1)
1156 kill(child_pid, SIGTERM);
1157
1158 if (signr == -1)
1159 return;
1160
1161 signal(signr, SIG_DFL);
1162 kill(getpid(), signr);
1163 }
1164
1165 static int stat__set_big_num(const struct option *opt __maybe_unused,
1166 const char *s __maybe_unused, int unset)
1167 {
1168 big_num_opt = unset ? 0 : 1;
1169 return 0;
1170 }
1171
1172 static int perf_stat_init_aggr_mode(void)
1173 {
1174 switch (aggr_mode) {
1175 case AGGR_SOCKET:
1176 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1177 perror("cannot build socket map");
1178 return -1;
1179 }
1180 aggr_get_id = cpu_map__get_socket;
1181 break;
1182 case AGGR_CORE:
1183 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1184 perror("cannot build core map");
1185 return -1;
1186 }
1187 aggr_get_id = cpu_map__get_core;
1188 break;
1189 case AGGR_NONE:
1190 case AGGR_GLOBAL:
1191 default:
1192 break;
1193 }
1194 return 0;
1195 }
1196
1197
1198 /*
1199 * Add default attributes, if there were no attributes specified or
1200 * if -d/--detailed, -d -d or -d -d -d is used:
1201 */
1202 static int add_default_attributes(void)
1203 {
1204 struct perf_event_attr default_attrs[] = {
1205
1206 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1207 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1208 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1209 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1210
1211 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1212 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1213 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1214 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1215 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1216 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1217
1218 };
1219
1220 /*
1221 * Detailed stats (-d), covering the L1 and last level data caches:
1222 */
1223 struct perf_event_attr detailed_attrs[] = {
1224
1225 { .type = PERF_TYPE_HW_CACHE,
1226 .config =
1227 PERF_COUNT_HW_CACHE_L1D << 0 |
1228 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1229 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1230
1231 { .type = PERF_TYPE_HW_CACHE,
1232 .config =
1233 PERF_COUNT_HW_CACHE_L1D << 0 |
1234 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1235 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1236
1237 { .type = PERF_TYPE_HW_CACHE,
1238 .config =
1239 PERF_COUNT_HW_CACHE_LL << 0 |
1240 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1241 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1242
1243 { .type = PERF_TYPE_HW_CACHE,
1244 .config =
1245 PERF_COUNT_HW_CACHE_LL << 0 |
1246 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1247 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1248 };
1249
1250 /*
1251 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1252 */
1253 struct perf_event_attr very_detailed_attrs[] = {
1254
1255 { .type = PERF_TYPE_HW_CACHE,
1256 .config =
1257 PERF_COUNT_HW_CACHE_L1I << 0 |
1258 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1259 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1260
1261 { .type = PERF_TYPE_HW_CACHE,
1262 .config =
1263 PERF_COUNT_HW_CACHE_L1I << 0 |
1264 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1265 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1266
1267 { .type = PERF_TYPE_HW_CACHE,
1268 .config =
1269 PERF_COUNT_HW_CACHE_DTLB << 0 |
1270 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1271 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1272
1273 { .type = PERF_TYPE_HW_CACHE,
1274 .config =
1275 PERF_COUNT_HW_CACHE_DTLB << 0 |
1276 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1277 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1278
1279 { .type = PERF_TYPE_HW_CACHE,
1280 .config =
1281 PERF_COUNT_HW_CACHE_ITLB << 0 |
1282 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1283 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1284
1285 { .type = PERF_TYPE_HW_CACHE,
1286 .config =
1287 PERF_COUNT_HW_CACHE_ITLB << 0 |
1288 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1289 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1290
1291 };
1292
1293 /*
1294 * Very, very detailed stats (-d -d -d), adding prefetch events:
1295 */
1296 struct perf_event_attr very_very_detailed_attrs[] = {
1297
1298 { .type = PERF_TYPE_HW_CACHE,
1299 .config =
1300 PERF_COUNT_HW_CACHE_L1D << 0 |
1301 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1302 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1303
1304 { .type = PERF_TYPE_HW_CACHE,
1305 .config =
1306 PERF_COUNT_HW_CACHE_L1D << 0 |
1307 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1308 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1309 };
1310
1311 /* Set attrs if no event is selected and !null_run: */
1312 if (null_run)
1313 return 0;
1314
1315 if (!evsel_list->nr_entries) {
1316 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1317 return -1;
1318 }
1319
1320 /* Detailed events get appended to the event list: */
1321
1322 if (detailed_run < 1)
1323 return 0;
1324
1325 /* Append detailed run extra attributes: */
1326 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1327 return -1;
1328
1329 if (detailed_run < 2)
1330 return 0;
1331
1332 /* Append very detailed run extra attributes: */
1333 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1334 return -1;
1335
1336 if (detailed_run < 3)
1337 return 0;
1338
1339 /* Append very, very detailed run extra attributes: */
1340 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1341 }
1342
1343 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1344 {
1345 bool append_file = false;
1346 int output_fd = 0;
1347 const char *output_name = NULL;
1348 const struct option options[] = {
1349 OPT_CALLBACK('e', "event", &evsel_list, "event",
1350 "event selector. use 'perf list' to list available events",
1351 parse_events_option),
1352 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1353 "event filter", parse_filter),
1354 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1355 "child tasks do not inherit counters"),
1356 OPT_STRING('p', "pid", &target.pid, "pid",
1357 "stat events on existing process id"),
1358 OPT_STRING('t', "tid", &target.tid, "tid",
1359 "stat events on existing thread id"),
1360 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1361 "system-wide collection from all CPUs"),
1362 OPT_BOOLEAN('g', "group", &group,
1363 "put the counters into a counter group"),
1364 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1365 OPT_INCR('v', "verbose", &verbose,
1366 "be more verbose (show counter open errors, etc)"),
1367 OPT_INTEGER('r', "repeat", &run_count,
1368 "repeat command and print average + stddev (max: 100, forever: 0)"),
1369 OPT_BOOLEAN('n', "null", &null_run,
1370 "null run - dont start any counters"),
1371 OPT_INCR('d', "detailed", &detailed_run,
1372 "detailed run - start a lot of events"),
1373 OPT_BOOLEAN('S', "sync", &sync_run,
1374 "call sync() before starting a run"),
1375 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1376 "print large numbers with thousands\' separators",
1377 stat__set_big_num),
1378 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1379 "list of cpus to monitor in system-wide"),
1380 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1381 "disable CPU count aggregation", AGGR_NONE),
1382 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1383 "print counts with custom separator"),
1384 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1385 "monitor event in cgroup name only", parse_cgroups),
1386 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1387 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1388 OPT_INTEGER(0, "log-fd", &output_fd,
1389 "log output to fd, instead of stderr"),
1390 OPT_STRING(0, "pre", &pre_cmd, "command",
1391 "command to run prior to the measured command"),
1392 OPT_STRING(0, "post", &post_cmd, "command",
1393 "command to run after to the measured command"),
1394 OPT_UINTEGER('I', "interval-print", &interval,
1395 "print counts at regular interval in ms (>= 100)"),
1396 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1397 "aggregate counts per processor socket", AGGR_SOCKET),
1398 OPT_SET_UINT(0, "per-core", &aggr_mode,
1399 "aggregate counts per physical processor core", AGGR_CORE),
1400 OPT_END()
1401 };
1402 const char * const stat_usage[] = {
1403 "perf stat [<options>] [<command>]",
1404 NULL
1405 };
1406 int status = -ENOMEM, run_idx;
1407 const char *mode;
1408
1409 setlocale(LC_ALL, "");
1410
1411 evsel_list = perf_evlist__new();
1412 if (evsel_list == NULL)
1413 return -ENOMEM;
1414
1415 argc = parse_options(argc, argv, options, stat_usage,
1416 PARSE_OPT_STOP_AT_NON_OPTION);
1417
1418 output = stderr;
1419 if (output_name && strcmp(output_name, "-"))
1420 output = NULL;
1421
1422 if (output_name && output_fd) {
1423 fprintf(stderr, "cannot use both --output and --log-fd\n");
1424 usage_with_options(stat_usage, options);
1425 }
1426
1427 if (output_fd < 0) {
1428 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1429 usage_with_options(stat_usage, options);
1430 }
1431
1432 if (!output) {
1433 struct timespec tm;
1434 mode = append_file ? "a" : "w";
1435
1436 output = fopen(output_name, mode);
1437 if (!output) {
1438 perror("failed to create output file");
1439 return -1;
1440 }
1441 clock_gettime(CLOCK_REALTIME, &tm);
1442 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1443 } else if (output_fd > 0) {
1444 mode = append_file ? "a" : "w";
1445 output = fdopen(output_fd, mode);
1446 if (!output) {
1447 perror("Failed opening logfd");
1448 return -errno;
1449 }
1450 }
1451
1452 if (csv_sep) {
1453 csv_output = true;
1454 if (!strcmp(csv_sep, "\\t"))
1455 csv_sep = "\t";
1456 } else
1457 csv_sep = DEFAULT_SEPARATOR;
1458
1459 /*
1460 * let the spreadsheet do the pretty-printing
1461 */
1462 if (csv_output) {
1463 /* User explicitly passed -B? */
1464 if (big_num_opt == 1) {
1465 fprintf(stderr, "-B option not supported with -x\n");
1466 usage_with_options(stat_usage, options);
1467 } else /* Nope, so disable big number formatting */
1468 big_num = false;
1469 } else if (big_num_opt == 0) /* User passed --no-big-num */
1470 big_num = false;
1471
1472 if (!argc && !perf_target__has_task(&target))
1473 usage_with_options(stat_usage, options);
1474 if (run_count < 0) {
1475 usage_with_options(stat_usage, options);
1476 } else if (run_count == 0) {
1477 forever = true;
1478 run_count = 1;
1479 }
1480
1481 /* no_aggr, cgroup are for system-wide only */
1482 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
1483 && !perf_target__has_cpu(&target)) {
1484 fprintf(stderr, "both cgroup and no-aggregation "
1485 "modes only available in system-wide mode\n");
1486
1487 usage_with_options(stat_usage, options);
1488 return -1;
1489 }
1490
1491 if (add_default_attributes())
1492 goto out;
1493
1494 perf_target__validate(&target);
1495
1496 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1497 if (perf_target__has_task(&target))
1498 pr_err("Problems finding threads of monitor\n");
1499 if (perf_target__has_cpu(&target))
1500 perror("failed to parse CPUs map");
1501
1502 usage_with_options(stat_usage, options);
1503 return -1;
1504 }
1505 if (interval && interval < 100) {
1506 pr_err("print interval must be >= 100ms\n");
1507 usage_with_options(stat_usage, options);
1508 return -1;
1509 }
1510
1511 if (perf_evlist__alloc_stats(evsel_list, interval))
1512 goto out_free_maps;
1513
1514 if (perf_stat_init_aggr_mode())
1515 goto out;
1516
1517 /*
1518 * We dont want to block the signals - that would cause
1519 * child tasks to inherit that and Ctrl-C would not work.
1520 * What we want is for Ctrl-C to work in the exec()-ed
1521 * task, but being ignored by perf stat itself:
1522 */
1523 atexit(sig_atexit);
1524 if (!forever)
1525 signal(SIGINT, skip_signal);
1526 signal(SIGCHLD, skip_signal);
1527 signal(SIGALRM, skip_signal);
1528 signal(SIGABRT, skip_signal);
1529
1530 status = 0;
1531 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1532 if (run_count != 1 && verbose)
1533 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1534 run_idx + 1);
1535
1536 status = run_perf_stat(argc, argv);
1537 if (forever && status != -1) {
1538 print_stat(argc, argv);
1539 perf_stat__reset_stats(evsel_list);
1540 }
1541 }
1542
1543 if (!forever && status != -1 && !interval)
1544 print_stat(argc, argv);
1545
1546 perf_evlist__free_stats(evsel_list);
1547 out_free_maps:
1548 perf_evlist__delete_maps(evsel_list);
1549 out:
1550 perf_evlist__delete(evsel_list);
1551 return status;
1552 }
kernel source for telekom puls (alcatel/mediatek)