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perf stat: Enhance option parse error message
[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 perf_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 (perf_target__has_cpu(&target))
298 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
299
300 if (!perf_target__has_task(&target) &&
301 perf_evsel__is_group_leader(evsel)) {
302 attr->disabled = 1;
303 if (!initial_delay)
304 attr->enable_on_exec = 1;
305 }
306
307 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
308 }
309
310 /*
311 * Does the counter have nsecs as a unit?
312 */
313 static inline int nsec_counter(struct perf_evsel *evsel)
314 {
315 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
316 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
317 return 1;
318
319 return 0;
320 }
321
322 static struct perf_evsel *nth_evsel(int n)
323 {
324 static struct perf_evsel **array;
325 static int array_len;
326 struct perf_evsel *ev;
327 int j;
328
329 /* Assumes this only called when evsel_list does not change anymore. */
330 if (!array) {
331 list_for_each_entry(ev, &evsel_list->entries, node)
332 array_len++;
333 array = malloc(array_len * sizeof(void *));
334 if (!array)
335 exit(ENOMEM);
336 j = 0;
337 list_for_each_entry(ev, &evsel_list->entries, node)
338 array[j++] = ev;
339 }
340 if (n < array_len)
341 return array[n];
342 return NULL;
343 }
344
345 /*
346 * Update various tracking values we maintain to print
347 * more semantic information such as miss/hit ratios,
348 * instruction rates, etc:
349 */
350 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
351 {
352 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
353 update_stats(&runtime_nsecs_stats[0], count[0]);
354 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
355 update_stats(&runtime_cycles_stats[0], count[0]);
356 else if (transaction_run &&
357 perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
358 update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
359 else if (transaction_run &&
360 perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
361 update_stats(&runtime_transaction_stats[0], count[0]);
362 else if (transaction_run &&
363 perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
364 update_stats(&runtime_elision_stats[0], count[0]);
365 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
366 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
367 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
368 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
369 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
370 update_stats(&runtime_branches_stats[0], count[0]);
371 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
372 update_stats(&runtime_cacherefs_stats[0], count[0]);
373 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
374 update_stats(&runtime_l1_dcache_stats[0], count[0]);
375 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
376 update_stats(&runtime_l1_icache_stats[0], count[0]);
377 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
378 update_stats(&runtime_ll_cache_stats[0], count[0]);
379 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
380 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
381 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
382 update_stats(&runtime_itlb_cache_stats[0], count[0]);
383 }
384
385 /*
386 * Read out the results of a single counter:
387 * aggregate counts across CPUs in system-wide mode
388 */
389 static int read_counter_aggr(struct perf_evsel *counter)
390 {
391 struct perf_stat *ps = counter->priv;
392 u64 *count = counter->counts->aggr.values;
393 int i;
394
395 if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
396 thread_map__nr(evsel_list->threads), scale) < 0)
397 return -1;
398
399 for (i = 0; i < 3; i++)
400 update_stats(&ps->res_stats[i], count[i]);
401
402 if (verbose) {
403 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
404 perf_evsel__name(counter), count[0], count[1], count[2]);
405 }
406
407 /*
408 * Save the full runtime - to allow normalization during printout:
409 */
410 update_shadow_stats(counter, count);
411
412 return 0;
413 }
414
415 /*
416 * Read out the results of a single counter:
417 * do not aggregate counts across CPUs in system-wide mode
418 */
419 static int read_counter(struct perf_evsel *counter)
420 {
421 u64 *count;
422 int cpu;
423
424 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
425 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
426 return -1;
427
428 count = counter->counts->cpu[cpu].values;
429
430 update_shadow_stats(counter, count);
431 }
432
433 return 0;
434 }
435
436 static void print_interval(void)
437 {
438 static int num_print_interval;
439 struct perf_evsel *counter;
440 struct perf_stat *ps;
441 struct timespec ts, rs;
442 char prefix[64];
443
444 if (aggr_mode == AGGR_GLOBAL) {
445 list_for_each_entry(counter, &evsel_list->entries, node) {
446 ps = counter->priv;
447 memset(ps->res_stats, 0, sizeof(ps->res_stats));
448 read_counter_aggr(counter);
449 }
450 } else {
451 list_for_each_entry(counter, &evsel_list->entries, node) {
452 ps = counter->priv;
453 memset(ps->res_stats, 0, sizeof(ps->res_stats));
454 read_counter(counter);
455 }
456 }
457
458 clock_gettime(CLOCK_MONOTONIC, &ts);
459 diff_timespec(&rs, &ts, &ref_time);
460 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
461
462 if (num_print_interval == 0 && !csv_output) {
463 switch (aggr_mode) {
464 case AGGR_SOCKET:
465 fprintf(output, "# time socket cpus counts events\n");
466 break;
467 case AGGR_CORE:
468 fprintf(output, "# time core cpus counts events\n");
469 break;
470 case AGGR_NONE:
471 fprintf(output, "# time CPU counts events\n");
472 break;
473 case AGGR_GLOBAL:
474 default:
475 fprintf(output, "# time counts events\n");
476 }
477 }
478
479 if (++num_print_interval == 25)
480 num_print_interval = 0;
481
482 switch (aggr_mode) {
483 case AGGR_CORE:
484 case AGGR_SOCKET:
485 print_aggr(prefix);
486 break;
487 case AGGR_NONE:
488 list_for_each_entry(counter, &evsel_list->entries, node)
489 print_counter(counter, prefix);
490 break;
491 case AGGR_GLOBAL:
492 default:
493 list_for_each_entry(counter, &evsel_list->entries, node)
494 print_counter_aggr(counter, prefix);
495 }
496
497 fflush(output);
498 }
499
500 static void handle_initial_delay(void)
501 {
502 struct perf_evsel *counter;
503
504 if (initial_delay) {
505 const int ncpus = cpu_map__nr(evsel_list->cpus),
506 nthreads = thread_map__nr(evsel_list->threads);
507
508 usleep(initial_delay * 1000);
509 list_for_each_entry(counter, &evsel_list->entries, node)
510 perf_evsel__enable(counter, ncpus, nthreads);
511 }
512 }
513
514 static int __run_perf_stat(int argc, const char **argv)
515 {
516 char msg[512];
517 unsigned long long t0, t1;
518 struct perf_evsel *counter;
519 struct timespec ts;
520 int status = 0;
521 const bool forks = (argc > 0);
522
523 if (interval) {
524 ts.tv_sec = interval / 1000;
525 ts.tv_nsec = (interval % 1000) * 1000000;
526 } else {
527 ts.tv_sec = 1;
528 ts.tv_nsec = 0;
529 }
530
531 if (forks) {
532 if (perf_evlist__prepare_workload(evsel_list, &target, argv,
533 false, false) < 0) {
534 perror("failed to prepare workload");
535 return -1;
536 }
537 child_pid = evsel_list->workload.pid;
538 }
539
540 if (group)
541 perf_evlist__set_leader(evsel_list);
542
543 list_for_each_entry(counter, &evsel_list->entries, node) {
544 if (create_perf_stat_counter(counter) < 0) {
545 /*
546 * PPC returns ENXIO for HW counters until 2.6.37
547 * (behavior changed with commit b0a873e).
548 */
549 if (errno == EINVAL || errno == ENOSYS ||
550 errno == ENOENT || errno == EOPNOTSUPP ||
551 errno == ENXIO) {
552 if (verbose)
553 ui__warning("%s event is not supported by the kernel.\n",
554 perf_evsel__name(counter));
555 counter->supported = false;
556 continue;
557 }
558
559 perf_evsel__open_strerror(counter, &target,
560 errno, msg, sizeof(msg));
561 ui__error("%s\n", msg);
562
563 if (child_pid != -1)
564 kill(child_pid, SIGTERM);
565
566 return -1;
567 }
568 counter->supported = true;
569 }
570
571 if (perf_evlist__apply_filters(evsel_list)) {
572 error("failed to set filter with %d (%s)\n", errno,
573 strerror(errno));
574 return -1;
575 }
576
577 /*
578 * Enable counters and exec the command:
579 */
580 t0 = rdclock();
581 clock_gettime(CLOCK_MONOTONIC, &ref_time);
582
583 if (forks) {
584 perf_evlist__start_workload(evsel_list);
585 handle_initial_delay();
586
587 if (interval) {
588 while (!waitpid(child_pid, &status, WNOHANG)) {
589 nanosleep(&ts, NULL);
590 print_interval();
591 }
592 }
593 wait(&status);
594 if (WIFSIGNALED(status))
595 psignal(WTERMSIG(status), argv[0]);
596 } else {
597 handle_initial_delay();
598 while (!done) {
599 nanosleep(&ts, NULL);
600 if (interval)
601 print_interval();
602 }
603 }
604
605 t1 = rdclock();
606
607 update_stats(&walltime_nsecs_stats, t1 - t0);
608
609 if (aggr_mode == AGGR_GLOBAL) {
610 list_for_each_entry(counter, &evsel_list->entries, node) {
611 read_counter_aggr(counter);
612 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
613 thread_map__nr(evsel_list->threads));
614 }
615 } else {
616 list_for_each_entry(counter, &evsel_list->entries, node) {
617 read_counter(counter);
618 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
619 }
620 }
621
622 return WEXITSTATUS(status);
623 }
624
625 static int run_perf_stat(int argc __maybe_unused, const char **argv)
626 {
627 int ret;
628
629 if (pre_cmd) {
630 ret = system(pre_cmd);
631 if (ret)
632 return ret;
633 }
634
635 if (sync_run)
636 sync();
637
638 ret = __run_perf_stat(argc, argv);
639 if (ret)
640 return ret;
641
642 if (post_cmd) {
643 ret = system(post_cmd);
644 if (ret)
645 return ret;
646 }
647
648 return ret;
649 }
650
651 static void print_noise_pct(double total, double avg)
652 {
653 double pct = rel_stddev_stats(total, avg);
654
655 if (csv_output)
656 fprintf(output, "%s%.2f%%", csv_sep, pct);
657 else if (pct)
658 fprintf(output, " ( +-%6.2f%% )", pct);
659 }
660
661 static void print_noise(struct perf_evsel *evsel, double avg)
662 {
663 struct perf_stat *ps;
664
665 if (run_count == 1)
666 return;
667
668 ps = evsel->priv;
669 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
670 }
671
672 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
673 {
674 switch (aggr_mode) {
675 case AGGR_CORE:
676 fprintf(output, "S%d-C%*d%s%*d%s",
677 cpu_map__id_to_socket(id),
678 csv_output ? 0 : -8,
679 cpu_map__id_to_cpu(id),
680 csv_sep,
681 csv_output ? 0 : 4,
682 nr,
683 csv_sep);
684 break;
685 case AGGR_SOCKET:
686 fprintf(output, "S%*d%s%*d%s",
687 csv_output ? 0 : -5,
688 id,
689 csv_sep,
690 csv_output ? 0 : 4,
691 nr,
692 csv_sep);
693 break;
694 case AGGR_NONE:
695 fprintf(output, "CPU%*d%s",
696 csv_output ? 0 : -4,
697 perf_evsel__cpus(evsel)->map[id], csv_sep);
698 break;
699 case AGGR_GLOBAL:
700 default:
701 break;
702 }
703 }
704
705 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
706 {
707 double msecs = avg / 1e6;
708 const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
709 char name[25];
710
711 aggr_printout(evsel, cpu, nr);
712
713 scnprintf(name, sizeof(name), "%s%s",
714 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
715 fprintf(output, fmt, msecs, csv_sep, name);
716
717 if (evsel->cgrp)
718 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
719
720 if (csv_output || interval)
721 return;
722
723 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
724 fprintf(output, " # %8.3f CPUs utilized ",
725 avg / avg_stats(&walltime_nsecs_stats));
726 else
727 fprintf(output, " ");
728 }
729
730 /* used for get_ratio_color() */
731 enum grc_type {
732 GRC_STALLED_CYCLES_FE,
733 GRC_STALLED_CYCLES_BE,
734 GRC_CACHE_MISSES,
735 GRC_MAX_NR
736 };
737
738 static const char *get_ratio_color(enum grc_type type, double ratio)
739 {
740 static const double grc_table[GRC_MAX_NR][3] = {
741 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
742 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
743 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
744 };
745 const char *color = PERF_COLOR_NORMAL;
746
747 if (ratio > grc_table[type][0])
748 color = PERF_COLOR_RED;
749 else if (ratio > grc_table[type][1])
750 color = PERF_COLOR_MAGENTA;
751 else if (ratio > grc_table[type][2])
752 color = PERF_COLOR_YELLOW;
753
754 return color;
755 }
756
757 static void print_stalled_cycles_frontend(int cpu,
758 struct perf_evsel *evsel
759 __maybe_unused, double avg)
760 {
761 double total, ratio = 0.0;
762 const char *color;
763
764 total = avg_stats(&runtime_cycles_stats[cpu]);
765
766 if (total)
767 ratio = avg / total * 100.0;
768
769 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
770
771 fprintf(output, " # ");
772 color_fprintf(output, color, "%6.2f%%", ratio);
773 fprintf(output, " frontend cycles idle ");
774 }
775
776 static void print_stalled_cycles_backend(int cpu,
777 struct perf_evsel *evsel
778 __maybe_unused, double avg)
779 {
780 double total, ratio = 0.0;
781 const char *color;
782
783 total = avg_stats(&runtime_cycles_stats[cpu]);
784
785 if (total)
786 ratio = avg / total * 100.0;
787
788 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
789
790 fprintf(output, " # ");
791 color_fprintf(output, color, "%6.2f%%", ratio);
792 fprintf(output, " backend cycles idle ");
793 }
794
795 static void print_branch_misses(int cpu,
796 struct perf_evsel *evsel __maybe_unused,
797 double avg)
798 {
799 double total, ratio = 0.0;
800 const char *color;
801
802 total = avg_stats(&runtime_branches_stats[cpu]);
803
804 if (total)
805 ratio = avg / total * 100.0;
806
807 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
808
809 fprintf(output, " # ");
810 color_fprintf(output, color, "%6.2f%%", ratio);
811 fprintf(output, " of all branches ");
812 }
813
814 static void print_l1_dcache_misses(int cpu,
815 struct perf_evsel *evsel __maybe_unused,
816 double avg)
817 {
818 double total, ratio = 0.0;
819 const char *color;
820
821 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
822
823 if (total)
824 ratio = avg / total * 100.0;
825
826 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
827
828 fprintf(output, " # ");
829 color_fprintf(output, color, "%6.2f%%", ratio);
830 fprintf(output, " of all L1-dcache hits ");
831 }
832
833 static void print_l1_icache_misses(int cpu,
834 struct perf_evsel *evsel __maybe_unused,
835 double avg)
836 {
837 double total, ratio = 0.0;
838 const char *color;
839
840 total = avg_stats(&runtime_l1_icache_stats[cpu]);
841
842 if (total)
843 ratio = avg / total * 100.0;
844
845 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
846
847 fprintf(output, " # ");
848 color_fprintf(output, color, "%6.2f%%", ratio);
849 fprintf(output, " of all L1-icache hits ");
850 }
851
852 static void print_dtlb_cache_misses(int cpu,
853 struct perf_evsel *evsel __maybe_unused,
854 double avg)
855 {
856 double total, ratio = 0.0;
857 const char *color;
858
859 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
860
861 if (total)
862 ratio = avg / total * 100.0;
863
864 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
865
866 fprintf(output, " # ");
867 color_fprintf(output, color, "%6.2f%%", ratio);
868 fprintf(output, " of all dTLB cache hits ");
869 }
870
871 static void print_itlb_cache_misses(int cpu,
872 struct perf_evsel *evsel __maybe_unused,
873 double avg)
874 {
875 double total, ratio = 0.0;
876 const char *color;
877
878 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
879
880 if (total)
881 ratio = avg / total * 100.0;
882
883 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
884
885 fprintf(output, " # ");
886 color_fprintf(output, color, "%6.2f%%", ratio);
887 fprintf(output, " of all iTLB cache hits ");
888 }
889
890 static void print_ll_cache_misses(int cpu,
891 struct perf_evsel *evsel __maybe_unused,
892 double avg)
893 {
894 double total, ratio = 0.0;
895 const char *color;
896
897 total = avg_stats(&runtime_ll_cache_stats[cpu]);
898
899 if (total)
900 ratio = avg / total * 100.0;
901
902 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
903
904 fprintf(output, " # ");
905 color_fprintf(output, color, "%6.2f%%", ratio);
906 fprintf(output, " of all LL-cache hits ");
907 }
908
909 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
910 {
911 double total, ratio = 0.0, total2;
912 const char *fmt;
913
914 if (csv_output)
915 fmt = "%.0f%s%s";
916 else if (big_num)
917 fmt = "%'18.0f%s%-25s";
918 else
919 fmt = "%18.0f%s%-25s";
920
921 aggr_printout(evsel, cpu, nr);
922
923 if (aggr_mode == AGGR_GLOBAL)
924 cpu = 0;
925
926 fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
927
928 if (evsel->cgrp)
929 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
930
931 if (csv_output || interval)
932 return;
933
934 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
935 total = avg_stats(&runtime_cycles_stats[cpu]);
936 if (total) {
937 ratio = avg / total;
938 fprintf(output, " # %5.2f insns per cycle ", ratio);
939 }
940 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
941 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
942
943 if (total && avg) {
944 ratio = total / avg;
945 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
946 }
947
948 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
949 runtime_branches_stats[cpu].n != 0) {
950 print_branch_misses(cpu, evsel, avg);
951 } else if (
952 evsel->attr.type == PERF_TYPE_HW_CACHE &&
953 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
954 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
955 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
956 runtime_l1_dcache_stats[cpu].n != 0) {
957 print_l1_dcache_misses(cpu, evsel, avg);
958 } else if (
959 evsel->attr.type == PERF_TYPE_HW_CACHE &&
960 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
961 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
962 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
963 runtime_l1_icache_stats[cpu].n != 0) {
964 print_l1_icache_misses(cpu, evsel, avg);
965 } else if (
966 evsel->attr.type == PERF_TYPE_HW_CACHE &&
967 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
968 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
969 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
970 runtime_dtlb_cache_stats[cpu].n != 0) {
971 print_dtlb_cache_misses(cpu, evsel, avg);
972 } else if (
973 evsel->attr.type == PERF_TYPE_HW_CACHE &&
974 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
975 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
976 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
977 runtime_itlb_cache_stats[cpu].n != 0) {
978 print_itlb_cache_misses(cpu, evsel, avg);
979 } else if (
980 evsel->attr.type == PERF_TYPE_HW_CACHE &&
981 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
982 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
983 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
984 runtime_ll_cache_stats[cpu].n != 0) {
985 print_ll_cache_misses(cpu, evsel, avg);
986 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
987 runtime_cacherefs_stats[cpu].n != 0) {
988 total = avg_stats(&runtime_cacherefs_stats[cpu]);
989
990 if (total)
991 ratio = avg * 100 / total;
992
993 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
994
995 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
996 print_stalled_cycles_frontend(cpu, evsel, avg);
997 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
998 print_stalled_cycles_backend(cpu, evsel, avg);
999 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
1000 total = avg_stats(&runtime_nsecs_stats[cpu]);
1001
1002 if (total) {
1003 ratio = avg / total;
1004 fprintf(output, " # %8.3f GHz ", ratio);
1005 }
1006 } else if (transaction_run &&
1007 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1008 total = avg_stats(&runtime_cycles_stats[cpu]);
1009 if (total)
1010 fprintf(output,
1011 " # %5.2f%% transactional cycles ",
1012 100.0 * (avg / total));
1013 } else if (transaction_run &&
1014 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1015 total = avg_stats(&runtime_cycles_stats[cpu]);
1016 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1017 if (total2 < avg)
1018 total2 = avg;
1019 if (total)
1020 fprintf(output,
1021 " # %5.2f%% aborted cycles ",
1022 100.0 * ((total2-avg) / total));
1023 } else if (transaction_run &&
1024 perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1025 avg > 0 &&
1026 runtime_cycles_in_tx_stats[cpu].n != 0) {
1027 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1028
1029 if (total)
1030 ratio = total / avg;
1031
1032 fprintf(output, " # %8.0f cycles / transaction ", ratio);
1033 } else if (transaction_run &&
1034 perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1035 avg > 0 &&
1036 runtime_cycles_in_tx_stats[cpu].n != 0) {
1037 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1038
1039 if (total)
1040 ratio = total / avg;
1041
1042 fprintf(output, " # %8.0f cycles / elision ", ratio);
1043 } else if (runtime_nsecs_stats[cpu].n != 0) {
1044 char unit = 'M';
1045
1046 total = avg_stats(&runtime_nsecs_stats[cpu]);
1047
1048 if (total)
1049 ratio = 1000.0 * avg / total;
1050 if (ratio < 0.001) {
1051 ratio *= 1000;
1052 unit = 'K';
1053 }
1054
1055 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
1056 } else {
1057 fprintf(output, " ");
1058 }
1059 }
1060
1061 static void print_aggr(char *prefix)
1062 {
1063 struct perf_evsel *counter;
1064 int cpu, cpu2, s, s2, id, nr;
1065 u64 ena, run, val;
1066
1067 if (!(aggr_map || aggr_get_id))
1068 return;
1069
1070 for (s = 0; s < aggr_map->nr; s++) {
1071 id = aggr_map->map[s];
1072 list_for_each_entry(counter, &evsel_list->entries, node) {
1073 val = ena = run = 0;
1074 nr = 0;
1075 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1076 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1077 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1078 if (s2 != id)
1079 continue;
1080 val += counter->counts->cpu[cpu].val;
1081 ena += counter->counts->cpu[cpu].ena;
1082 run += counter->counts->cpu[cpu].run;
1083 nr++;
1084 }
1085 if (prefix)
1086 fprintf(output, "%s", prefix);
1087
1088 if (run == 0 || ena == 0) {
1089 aggr_printout(counter, id, nr);
1090
1091 fprintf(output, "%*s%s%*s",
1092 csv_output ? 0 : 18,
1093 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1094 csv_sep,
1095 csv_output ? 0 : -24,
1096 perf_evsel__name(counter));
1097
1098 if (counter->cgrp)
1099 fprintf(output, "%s%s",
1100 csv_sep, counter->cgrp->name);
1101
1102 fputc('\n', output);
1103 continue;
1104 }
1105
1106 if (nsec_counter(counter))
1107 nsec_printout(id, nr, counter, val);
1108 else
1109 abs_printout(id, nr, counter, val);
1110
1111 if (!csv_output) {
1112 print_noise(counter, 1.0);
1113
1114 if (run != ena)
1115 fprintf(output, " (%.2f%%)",
1116 100.0 * run / ena);
1117 }
1118 fputc('\n', output);
1119 }
1120 }
1121 }
1122
1123 /*
1124 * Print out the results of a single counter:
1125 * aggregated counts in system-wide mode
1126 */
1127 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1128 {
1129 struct perf_stat *ps = counter->priv;
1130 double avg = avg_stats(&ps->res_stats[0]);
1131 int scaled = counter->counts->scaled;
1132
1133 if (prefix)
1134 fprintf(output, "%s", prefix);
1135
1136 if (scaled == -1) {
1137 fprintf(output, "%*s%s%*s",
1138 csv_output ? 0 : 18,
1139 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1140 csv_sep,
1141 csv_output ? 0 : -24,
1142 perf_evsel__name(counter));
1143
1144 if (counter->cgrp)
1145 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1146
1147 fputc('\n', output);
1148 return;
1149 }
1150
1151 if (nsec_counter(counter))
1152 nsec_printout(-1, 0, counter, avg);
1153 else
1154 abs_printout(-1, 0, counter, avg);
1155
1156 print_noise(counter, avg);
1157
1158 if (csv_output) {
1159 fputc('\n', output);
1160 return;
1161 }
1162
1163 if (scaled) {
1164 double avg_enabled, avg_running;
1165
1166 avg_enabled = avg_stats(&ps->res_stats[1]);
1167 avg_running = avg_stats(&ps->res_stats[2]);
1168
1169 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1170 }
1171 fprintf(output, "\n");
1172 }
1173
1174 /*
1175 * Print out the results of a single counter:
1176 * does not use aggregated count in system-wide
1177 */
1178 static void print_counter(struct perf_evsel *counter, char *prefix)
1179 {
1180 u64 ena, run, val;
1181 int cpu;
1182
1183 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1184 val = counter->counts->cpu[cpu].val;
1185 ena = counter->counts->cpu[cpu].ena;
1186 run = counter->counts->cpu[cpu].run;
1187
1188 if (prefix)
1189 fprintf(output, "%s", prefix);
1190
1191 if (run == 0 || ena == 0) {
1192 fprintf(output, "CPU%*d%s%*s%s%*s",
1193 csv_output ? 0 : -4,
1194 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1195 csv_output ? 0 : 18,
1196 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1197 csv_sep,
1198 csv_output ? 0 : -24,
1199 perf_evsel__name(counter));
1200
1201 if (counter->cgrp)
1202 fprintf(output, "%s%s",
1203 csv_sep, counter->cgrp->name);
1204
1205 fputc('\n', output);
1206 continue;
1207 }
1208
1209 if (nsec_counter(counter))
1210 nsec_printout(cpu, 0, counter, val);
1211 else
1212 abs_printout(cpu, 0, counter, val);
1213
1214 if (!csv_output) {
1215 print_noise(counter, 1.0);
1216
1217 if (run != ena)
1218 fprintf(output, " (%.2f%%)",
1219 100.0 * run / ena);
1220 }
1221 fputc('\n', output);
1222 }
1223 }
1224
1225 static void print_stat(int argc, const char **argv)
1226 {
1227 struct perf_evsel *counter;
1228 int i;
1229
1230 fflush(stdout);
1231
1232 if (!csv_output) {
1233 fprintf(output, "\n");
1234 fprintf(output, " Performance counter stats for ");
1235 if (target.system_wide)
1236 fprintf(output, "\'system wide");
1237 else if (target.cpu_list)
1238 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1239 else if (!perf_target__has_task(&target)) {
1240 fprintf(output, "\'%s", argv[0]);
1241 for (i = 1; i < argc; i++)
1242 fprintf(output, " %s", argv[i]);
1243 } else if (target.pid)
1244 fprintf(output, "process id \'%s", target.pid);
1245 else
1246 fprintf(output, "thread id \'%s", target.tid);
1247
1248 fprintf(output, "\'");
1249 if (run_count > 1)
1250 fprintf(output, " (%d runs)", run_count);
1251 fprintf(output, ":\n\n");
1252 }
1253
1254 switch (aggr_mode) {
1255 case AGGR_CORE:
1256 case AGGR_SOCKET:
1257 print_aggr(NULL);
1258 break;
1259 case AGGR_GLOBAL:
1260 list_for_each_entry(counter, &evsel_list->entries, node)
1261 print_counter_aggr(counter, NULL);
1262 break;
1263 case AGGR_NONE:
1264 list_for_each_entry(counter, &evsel_list->entries, node)
1265 print_counter(counter, NULL);
1266 break;
1267 default:
1268 break;
1269 }
1270
1271 if (!csv_output) {
1272 if (!null_run)
1273 fprintf(output, "\n");
1274 fprintf(output, " %17.9f seconds time elapsed",
1275 avg_stats(&walltime_nsecs_stats)/1e9);
1276 if (run_count > 1) {
1277 fprintf(output, " ");
1278 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1279 avg_stats(&walltime_nsecs_stats));
1280 }
1281 fprintf(output, "\n\n");
1282 }
1283 }
1284
1285 static volatile int signr = -1;
1286
1287 static void skip_signal(int signo)
1288 {
1289 if ((child_pid == -1) || interval)
1290 done = 1;
1291
1292 signr = signo;
1293 /*
1294 * render child_pid harmless
1295 * won't send SIGTERM to a random
1296 * process in case of race condition
1297 * and fast PID recycling
1298 */
1299 child_pid = -1;
1300 }
1301
1302 static void sig_atexit(void)
1303 {
1304 sigset_t set, oset;
1305
1306 /*
1307 * avoid race condition with SIGCHLD handler
1308 * in skip_signal() which is modifying child_pid
1309 * goal is to avoid send SIGTERM to a random
1310 * process
1311 */
1312 sigemptyset(&set);
1313 sigaddset(&set, SIGCHLD);
1314 sigprocmask(SIG_BLOCK, &set, &oset);
1315
1316 if (child_pid != -1)
1317 kill(child_pid, SIGTERM);
1318
1319 sigprocmask(SIG_SETMASK, &oset, NULL);
1320
1321 if (signr == -1)
1322 return;
1323
1324 signal(signr, SIG_DFL);
1325 kill(getpid(), signr);
1326 }
1327
1328 static int stat__set_big_num(const struct option *opt __maybe_unused,
1329 const char *s __maybe_unused, int unset)
1330 {
1331 big_num_opt = unset ? 0 : 1;
1332 return 0;
1333 }
1334
1335 static int perf_stat_init_aggr_mode(void)
1336 {
1337 switch (aggr_mode) {
1338 case AGGR_SOCKET:
1339 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1340 perror("cannot build socket map");
1341 return -1;
1342 }
1343 aggr_get_id = cpu_map__get_socket;
1344 break;
1345 case AGGR_CORE:
1346 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1347 perror("cannot build core map");
1348 return -1;
1349 }
1350 aggr_get_id = cpu_map__get_core;
1351 break;
1352 case AGGR_NONE:
1353 case AGGR_GLOBAL:
1354 default:
1355 break;
1356 }
1357 return 0;
1358 }
1359
1360 static int setup_events(const char * const *attrs, unsigned len)
1361 {
1362 unsigned i;
1363
1364 for (i = 0; i < len; i++) {
1365 if (parse_events(evsel_list, attrs[i]))
1366 return -1;
1367 }
1368 return 0;
1369 }
1370
1371 /*
1372 * Add default attributes, if there were no attributes specified or
1373 * if -d/--detailed, -d -d or -d -d -d is used:
1374 */
1375 static int add_default_attributes(void)
1376 {
1377 struct perf_event_attr default_attrs[] = {
1378
1379 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1380 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1381 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1382 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1383
1384 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1385 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1386 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1387 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1388 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1389 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1390
1391 };
1392
1393 /*
1394 * Detailed stats (-d), covering the L1 and last level data caches:
1395 */
1396 struct perf_event_attr detailed_attrs[] = {
1397
1398 { .type = PERF_TYPE_HW_CACHE,
1399 .config =
1400 PERF_COUNT_HW_CACHE_L1D << 0 |
1401 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1402 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1403
1404 { .type = PERF_TYPE_HW_CACHE,
1405 .config =
1406 PERF_COUNT_HW_CACHE_L1D << 0 |
1407 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1408 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1409
1410 { .type = PERF_TYPE_HW_CACHE,
1411 .config =
1412 PERF_COUNT_HW_CACHE_LL << 0 |
1413 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1414 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1415
1416 { .type = PERF_TYPE_HW_CACHE,
1417 .config =
1418 PERF_COUNT_HW_CACHE_LL << 0 |
1419 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1420 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1421 };
1422
1423 /*
1424 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1425 */
1426 struct perf_event_attr very_detailed_attrs[] = {
1427
1428 { .type = PERF_TYPE_HW_CACHE,
1429 .config =
1430 PERF_COUNT_HW_CACHE_L1I << 0 |
1431 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1432 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1433
1434 { .type = PERF_TYPE_HW_CACHE,
1435 .config =
1436 PERF_COUNT_HW_CACHE_L1I << 0 |
1437 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1438 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1439
1440 { .type = PERF_TYPE_HW_CACHE,
1441 .config =
1442 PERF_COUNT_HW_CACHE_DTLB << 0 |
1443 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1444 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1445
1446 { .type = PERF_TYPE_HW_CACHE,
1447 .config =
1448 PERF_COUNT_HW_CACHE_DTLB << 0 |
1449 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1450 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1451
1452 { .type = PERF_TYPE_HW_CACHE,
1453 .config =
1454 PERF_COUNT_HW_CACHE_ITLB << 0 |
1455 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1456 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1457
1458 { .type = PERF_TYPE_HW_CACHE,
1459 .config =
1460 PERF_COUNT_HW_CACHE_ITLB << 0 |
1461 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1462 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1463
1464 };
1465
1466 /*
1467 * Very, very detailed stats (-d -d -d), adding prefetch events:
1468 */
1469 struct perf_event_attr very_very_detailed_attrs[] = {
1470
1471 { .type = PERF_TYPE_HW_CACHE,
1472 .config =
1473 PERF_COUNT_HW_CACHE_L1D << 0 |
1474 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1475 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1476
1477 { .type = PERF_TYPE_HW_CACHE,
1478 .config =
1479 PERF_COUNT_HW_CACHE_L1D << 0 |
1480 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1481 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1482 };
1483
1484 /* Set attrs if no event is selected and !null_run: */
1485 if (null_run)
1486 return 0;
1487
1488 if (transaction_run) {
1489 int err;
1490 if (pmu_have_event("cpu", "cycles-ct") &&
1491 pmu_have_event("cpu", "el-start"))
1492 err = setup_events(transaction_attrs,
1493 ARRAY_SIZE(transaction_attrs));
1494 else
1495 err = setup_events(transaction_limited_attrs,
1496 ARRAY_SIZE(transaction_limited_attrs));
1497 if (err < 0) {
1498 fprintf(stderr, "Cannot set up transaction events\n");
1499 return -1;
1500 }
1501 return 0;
1502 }
1503
1504 if (!evsel_list->nr_entries) {
1505 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1506 return -1;
1507 }
1508
1509 /* Detailed events get appended to the event list: */
1510
1511 if (detailed_run < 1)
1512 return 0;
1513
1514 /* Append detailed run extra attributes: */
1515 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1516 return -1;
1517
1518 if (detailed_run < 2)
1519 return 0;
1520
1521 /* Append very detailed run extra attributes: */
1522 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1523 return -1;
1524
1525 if (detailed_run < 3)
1526 return 0;
1527
1528 /* Append very, very detailed run extra attributes: */
1529 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1530 }
1531
1532 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1533 {
1534 bool append_file = false;
1535 int output_fd = 0;
1536 const char *output_name = NULL;
1537 const struct option options[] = {
1538 OPT_BOOLEAN('T', "transaction", &transaction_run,
1539 "hardware transaction statistics"),
1540 OPT_CALLBACK('e', "event", &evsel_list, "event",
1541 "event selector. use 'perf list' to list available events",
1542 parse_events_option),
1543 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1544 "event filter", parse_filter),
1545 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1546 "child tasks do not inherit counters"),
1547 OPT_STRING('p', "pid", &target.pid, "pid",
1548 "stat events on existing process id"),
1549 OPT_STRING('t', "tid", &target.tid, "tid",
1550 "stat events on existing thread id"),
1551 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1552 "system-wide collection from all CPUs"),
1553 OPT_BOOLEAN('g', "group", &group,
1554 "put the counters into a counter group"),
1555 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1556 OPT_INCR('v', "verbose", &verbose,
1557 "be more verbose (show counter open errors, etc)"),
1558 OPT_INTEGER('r', "repeat", &run_count,
1559 "repeat command and print average + stddev (max: 100, forever: 0)"),
1560 OPT_BOOLEAN('n', "null", &null_run,
1561 "null run - dont start any counters"),
1562 OPT_INCR('d', "detailed", &detailed_run,
1563 "detailed run - start a lot of events"),
1564 OPT_BOOLEAN('S', "sync", &sync_run,
1565 "call sync() before starting a run"),
1566 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1567 "print large numbers with thousands\' separators",
1568 stat__set_big_num),
1569 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1570 "list of cpus to monitor in system-wide"),
1571 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1572 "disable CPU count aggregation", AGGR_NONE),
1573 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1574 "print counts with custom separator"),
1575 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1576 "monitor event in cgroup name only", parse_cgroups),
1577 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1578 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1579 OPT_INTEGER(0, "log-fd", &output_fd,
1580 "log output to fd, instead of stderr"),
1581 OPT_STRING(0, "pre", &pre_cmd, "command",
1582 "command to run prior to the measured command"),
1583 OPT_STRING(0, "post", &post_cmd, "command",
1584 "command to run after to the measured command"),
1585 OPT_UINTEGER('I', "interval-print", &interval,
1586 "print counts at regular interval in ms (>= 100)"),
1587 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1588 "aggregate counts per processor socket", AGGR_SOCKET),
1589 OPT_SET_UINT(0, "per-core", &aggr_mode,
1590 "aggregate counts per physical processor core", AGGR_CORE),
1591 OPT_UINTEGER('D', "delay", &initial_delay,
1592 "ms to wait before starting measurement after program start"),
1593 OPT_END()
1594 };
1595 const char * const stat_usage[] = {
1596 "perf stat [<options>] [<command>]",
1597 NULL
1598 };
1599 int status = -EINVAL, run_idx;
1600 const char *mode;
1601
1602 setlocale(LC_ALL, "");
1603
1604 evsel_list = perf_evlist__new();
1605 if (evsel_list == NULL)
1606 return -ENOMEM;
1607
1608 argc = parse_options(argc, argv, options, stat_usage,
1609 PARSE_OPT_STOP_AT_NON_OPTION);
1610
1611 output = stderr;
1612 if (output_name && strcmp(output_name, "-"))
1613 output = NULL;
1614
1615 if (output_name && output_fd) {
1616 fprintf(stderr, "cannot use both --output and --log-fd\n");
1617 parse_options_usage(stat_usage, options, "o", 1);
1618 parse_options_usage(NULL, options, "log-fd", 0);
1619 goto out;
1620 }
1621
1622 if (output_fd < 0) {
1623 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1624 parse_options_usage(stat_usage, options, "log-fd", 0);
1625 goto out;
1626 }
1627
1628 if (!output) {
1629 struct timespec tm;
1630 mode = append_file ? "a" : "w";
1631
1632 output = fopen(output_name, mode);
1633 if (!output) {
1634 perror("failed to create output file");
1635 return -1;
1636 }
1637 clock_gettime(CLOCK_REALTIME, &tm);
1638 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1639 } else if (output_fd > 0) {
1640 mode = append_file ? "a" : "w";
1641 output = fdopen(output_fd, mode);
1642 if (!output) {
1643 perror("Failed opening logfd");
1644 return -errno;
1645 }
1646 }
1647
1648 if (csv_sep) {
1649 csv_output = true;
1650 if (!strcmp(csv_sep, "\\t"))
1651 csv_sep = "\t";
1652 } else
1653 csv_sep = DEFAULT_SEPARATOR;
1654
1655 /*
1656 * let the spreadsheet do the pretty-printing
1657 */
1658 if (csv_output) {
1659 /* User explicitly passed -B? */
1660 if (big_num_opt == 1) {
1661 fprintf(stderr, "-B option not supported with -x\n");
1662 parse_options_usage(stat_usage, options, "B", 1);
1663 parse_options_usage(NULL, options, "x", 1);
1664 goto out;
1665 } else /* Nope, so disable big number formatting */
1666 big_num = false;
1667 } else if (big_num_opt == 0) /* User passed --no-big-num */
1668 big_num = false;
1669
1670 if (!argc && perf_target__none(&target))
1671 usage_with_options(stat_usage, options);
1672
1673 if (run_count < 0) {
1674 pr_err("Run count must be a positive number\n");
1675 parse_options_usage(stat_usage, options, "r", 1);
1676 goto out;
1677 } else if (run_count == 0) {
1678 forever = true;
1679 run_count = 1;
1680 }
1681
1682 /* no_aggr, cgroup are for system-wide only */
1683 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
1684 && !perf_target__has_cpu(&target)) {
1685 fprintf(stderr, "both cgroup and no-aggregation "
1686 "modes only available in system-wide mode\n");
1687
1688 parse_options_usage(stat_usage, options, "G", 1);
1689 parse_options_usage(NULL, options, "A", 1);
1690 parse_options_usage(NULL, options, "a", 1);
1691 goto out;
1692 }
1693
1694 if (add_default_attributes())
1695 goto out;
1696
1697 perf_target__validate(&target);
1698
1699 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1700 if (perf_target__has_task(&target)) {
1701 pr_err("Problems finding threads of monitor\n");
1702 parse_options_usage(stat_usage, options, "p", 1);
1703 parse_options_usage(NULL, options, "t", 1);
1704 } else if (perf_target__has_cpu(&target)) {
1705 perror("failed to parse CPUs map");
1706 parse_options_usage(stat_usage, options, "C", 1);
1707 parse_options_usage(NULL, options, "a", 1);
1708 }
1709 goto out;
1710 }
1711 if (interval && interval < 100) {
1712 pr_err("print interval must be >= 100ms\n");
1713 parse_options_usage(stat_usage, options, "I", 1);
1714 goto out_free_maps;
1715 }
1716
1717 if (perf_evlist__alloc_stats(evsel_list, interval))
1718 goto out_free_maps;
1719
1720 if (perf_stat_init_aggr_mode())
1721 goto out_free_maps;
1722
1723 /*
1724 * We dont want to block the signals - that would cause
1725 * child tasks to inherit that and Ctrl-C would not work.
1726 * What we want is for Ctrl-C to work in the exec()-ed
1727 * task, but being ignored by perf stat itself:
1728 */
1729 atexit(sig_atexit);
1730 if (!forever)
1731 signal(SIGINT, skip_signal);
1732 signal(SIGCHLD, skip_signal);
1733 signal(SIGALRM, skip_signal);
1734 signal(SIGABRT, skip_signal);
1735
1736 status = 0;
1737 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1738 if (run_count != 1 && verbose)
1739 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1740 run_idx + 1);
1741
1742 status = run_perf_stat(argc, argv);
1743 if (forever && status != -1) {
1744 print_stat(argc, argv);
1745 perf_stat__reset_stats(evsel_list);
1746 }
1747 }
1748
1749 if (!forever && status != -1 && !interval)
1750 print_stat(argc, argv);
1751
1752 perf_evlist__free_stats(evsel_list);
1753 out_free_maps:
1754 perf_evlist__delete_maps(evsel_list);
1755 out:
1756 perf_evlist__delete(evsel_list);
1757 return status;
1758 }
Linux kernel - Deliverables
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