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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/header.h"
55#include "util/cpumap.h"
56#include "util/thread.h"
57#include "util/thread_map.h"
58
59#include <sys/prctl.h>
60#include <math.h>
61#include <locale.h>
62
63#define DEFAULT_SEPARATOR " "
64#define CNTR_NOT_SUPPORTED "<not supported>"
65#define CNTR_NOT_COUNTED "<not counted>"
66
67static struct perf_event_attr default_attrs[] = {
68
69 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
70 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
71 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
72 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
73
74 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
75 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
76 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
77 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
78 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
79 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
80
81};
82
83/*
84 * Detailed stats (-d), covering the L1 and last level data caches:
85 */
86static struct perf_event_attr detailed_attrs[] = {
87
88 { .type = PERF_TYPE_HW_CACHE,
89 .config =
90 PERF_COUNT_HW_CACHE_L1D << 0 |
91 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
92 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
93
94 { .type = PERF_TYPE_HW_CACHE,
95 .config =
96 PERF_COUNT_HW_CACHE_L1D << 0 |
97 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
98 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
99
100 { .type = PERF_TYPE_HW_CACHE,
101 .config =
102 PERF_COUNT_HW_CACHE_LL << 0 |
103 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
104 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
105
106 { .type = PERF_TYPE_HW_CACHE,
107 .config =
108 PERF_COUNT_HW_CACHE_LL << 0 |
109 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
110 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
111};
112
113/*
114 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
115 */
116static struct perf_event_attr very_detailed_attrs[] = {
117
118 { .type = PERF_TYPE_HW_CACHE,
119 .config =
120 PERF_COUNT_HW_CACHE_L1I << 0 |
121 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
122 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
123
124 { .type = PERF_TYPE_HW_CACHE,
125 .config =
126 PERF_COUNT_HW_CACHE_L1I << 0 |
127 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
128 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
129
130 { .type = PERF_TYPE_HW_CACHE,
131 .config =
132 PERF_COUNT_HW_CACHE_DTLB << 0 |
133 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
134 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
135
136 { .type = PERF_TYPE_HW_CACHE,
137 .config =
138 PERF_COUNT_HW_CACHE_DTLB << 0 |
139 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
140 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
141
142 { .type = PERF_TYPE_HW_CACHE,
143 .config =
144 PERF_COUNT_HW_CACHE_ITLB << 0 |
145 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
146 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
147
148 { .type = PERF_TYPE_HW_CACHE,
149 .config =
150 PERF_COUNT_HW_CACHE_ITLB << 0 |
151 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
152 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
153
154};
155
156/*
157 * Very, very detailed stats (-d -d -d), adding prefetch events:
158 */
159static struct perf_event_attr very_very_detailed_attrs[] = {
160
161 { .type = PERF_TYPE_HW_CACHE,
162 .config =
163 PERF_COUNT_HW_CACHE_L1D << 0 |
164 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
165 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
166
167 { .type = PERF_TYPE_HW_CACHE,
168 .config =
169 PERF_COUNT_HW_CACHE_L1D << 0 |
170 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
171 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
172};
173
174
175
176struct perf_evlist *evsel_list;
177
178static bool system_wide = false;
179static int run_idx = 0;
180
181static int run_count = 1;
182static bool no_inherit = false;
183static bool scale = true;
184static bool no_aggr = false;
185static pid_t target_pid = -1;
186static pid_t target_tid = -1;
187static pid_t child_pid = -1;
188static bool null_run = false;
189static int detailed_run = 0;
190static bool sync_run = false;
191static bool big_num = true;
192static int big_num_opt = -1;
193static const char *cpu_list;
194static const char *csv_sep = NULL;
195static bool csv_output = false;
196static bool group = false;
197
198static volatile int done = 0;
199
200struct stats
201{
202 double n, mean, M2;
203};
204
205struct perf_stat {
206 struct stats res_stats[3];
207};
208
209static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
210{
211 evsel->priv = zalloc(sizeof(struct perf_stat));
212 return evsel->priv == NULL ? -ENOMEM : 0;
213}
214
215static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
216{
217 free(evsel->priv);
218 evsel->priv = NULL;
219}
220
221static void update_stats(struct stats *stats, u64 val)
222{
223 double delta;
224
225 stats->n++;
226 delta = val - stats->mean;
227 stats->mean += delta / stats->n;
228 stats->M2 += delta*(val - stats->mean);
229}
230
231static double avg_stats(struct stats *stats)
232{
233 return stats->mean;
234}
235
236/*
237 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
238 *
239 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
240 * s^2 = -------------------------------
241 * n - 1
242 *
243 * http://en.wikipedia.org/wiki/Stddev
244 *
245 * The std dev of the mean is related to the std dev by:
246 *
247 * s
248 * s_mean = -------
249 * sqrt(n)
250 *
251 */
252static double stddev_stats(struct stats *stats)
253{
254 double variance = stats->M2 / (stats->n - 1);
255 double variance_mean = variance / stats->n;
256
257 return sqrt(variance_mean);
258}
259
260struct stats runtime_nsecs_stats[MAX_NR_CPUS];
261struct stats runtime_cycles_stats[MAX_NR_CPUS];
262struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
263struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
264struct stats runtime_branches_stats[MAX_NR_CPUS];
265struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
266struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
267struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
268struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
269struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
270struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
271struct stats walltime_nsecs_stats;
272
273static int create_perf_stat_counter(struct perf_evsel *evsel)
274{
275 struct perf_event_attr *attr = &evsel->attr;
276
277 if (scale)
278 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
279 PERF_FORMAT_TOTAL_TIME_RUNNING;
280
281 attr->inherit = !no_inherit;
282
283 if (system_wide)
284 return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group);
285
286 if (target_pid == -1 && target_tid == -1) {
287 attr->disabled = 1;
288 attr->enable_on_exec = 1;
289 }
290
291 return perf_evsel__open_per_thread(evsel, evsel_list->threads, group);
292}
293
294/*
295 * Does the counter have nsecs as a unit?
296 */
297static inline int nsec_counter(struct perf_evsel *evsel)
298{
299 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
300 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
301 return 1;
302
303 return 0;
304}
305
306/*
307 * Update various tracking values we maintain to print
308 * more semantic information such as miss/hit ratios,
309 * instruction rates, etc:
310 */
311static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
312{
313 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
314 update_stats(&runtime_nsecs_stats[0], count[0]);
315 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
316 update_stats(&runtime_cycles_stats[0], count[0]);
317 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
318 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
319 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
320 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
321 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
322 update_stats(&runtime_branches_stats[0], count[0]);
323 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
324 update_stats(&runtime_cacherefs_stats[0], count[0]);
325 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
326 update_stats(&runtime_l1_dcache_stats[0], count[0]);
327 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
328 update_stats(&runtime_l1_icache_stats[0], count[0]);
329 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
330 update_stats(&runtime_ll_cache_stats[0], count[0]);
331 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
332 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
333 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
334 update_stats(&runtime_itlb_cache_stats[0], count[0]);
335}
336
337/*
338 * Read out the results of a single counter:
339 * aggregate counts across CPUs in system-wide mode
340 */
341static int read_counter_aggr(struct perf_evsel *counter)
342{
343 struct perf_stat *ps = counter->priv;
344 u64 *count = counter->counts->aggr.values;
345 int i;
346
347 if (__perf_evsel__read(counter, evsel_list->cpus->nr,
348 evsel_list->threads->nr, scale) < 0)
349 return -1;
350
351 for (i = 0; i < 3; i++)
352 update_stats(&ps->res_stats[i], count[i]);
353
354 if (verbose) {
355 fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
356 event_name(counter), count[0], count[1], count[2]);
357 }
358
359 /*
360 * Save the full runtime - to allow normalization during printout:
361 */
362 update_shadow_stats(counter, count);
363
364 return 0;
365}
366
367/*
368 * Read out the results of a single counter:
369 * do not aggregate counts across CPUs in system-wide mode
370 */
371static int read_counter(struct perf_evsel *counter)
372{
373 u64 *count;
374 int cpu;
375
376 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
377 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
378 return -1;
379
380 count = counter->counts->cpu[cpu].values;
381
382 update_shadow_stats(counter, count);
383 }
384
385 return 0;
386}
387
388static int run_perf_stat(int argc __used, const char **argv)
389{
390 unsigned long long t0, t1;
391 struct perf_evsel *counter;
392 int status = 0;
393 int child_ready_pipe[2], go_pipe[2];
394 const bool forks = (argc > 0);
395 char buf;
396
397 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
398 perror("failed to create pipes");
399 exit(1);
400 }
401
402 if (forks) {
403 if ((child_pid = fork()) < 0)
404 perror("failed to fork");
405
406 if (!child_pid) {
407 close(child_ready_pipe[0]);
408 close(go_pipe[1]);
409 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
410
411 /*
412 * Do a dummy execvp to get the PLT entry resolved,
413 * so we avoid the resolver overhead on the real
414 * execvp call.
415 */
416 execvp("", (char **)argv);
417
418 /*
419 * Tell the parent we're ready to go
420 */
421 close(child_ready_pipe[1]);
422
423 /*
424 * Wait until the parent tells us to go.
425 */
426 if (read(go_pipe[0], &buf, 1) == -1)
427 perror("unable to read pipe");
428
429 execvp(argv[0], (char **)argv);
430
431 perror(argv[0]);
432 exit(-1);
433 }
434
435 if (target_tid == -1 && target_pid == -1 && !system_wide)
436 evsel_list->threads->map[0] = child_pid;
437
438 /*
439 * Wait for the child to be ready to exec.
440 */
441 close(child_ready_pipe[1]);
442 close(go_pipe[0]);
443 if (read(child_ready_pipe[0], &buf, 1) == -1)
444 perror("unable to read pipe");
445 close(child_ready_pipe[0]);
446 }
447
448 list_for_each_entry(counter, &evsel_list->entries, node) {
449 if (create_perf_stat_counter(counter) < 0) {
450 if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) {
451 if (verbose)
452 ui__warning("%s event is not supported by the kernel.\n",
453 event_name(counter));
454 counter->supported = false;
455 continue;
456 }
457
458 if (errno == EPERM || errno == EACCES) {
459 error("You may not have permission to collect %sstats.\n"
460 "\t Consider tweaking"
461 " /proc/sys/kernel/perf_event_paranoid or running as root.",
462 system_wide ? "system-wide " : "");
463 } else {
464 error("open_counter returned with %d (%s). "
465 "/bin/dmesg may provide additional information.\n",
466 errno, strerror(errno));
467 }
468 if (child_pid != -1)
469 kill(child_pid, SIGTERM);
470 die("Not all events could be opened.\n");
471 return -1;
472 }
473 counter->supported = true;
474 }
475
476 if (perf_evlist__set_filters(evsel_list)) {
477 error("failed to set filter with %d (%s)\n", errno,
478 strerror(errno));
479 return -1;
480 }
481
482 /*
483 * Enable counters and exec the command:
484 */
485 t0 = rdclock();
486
487 if (forks) {
488 close(go_pipe[1]);
489 wait(&status);
490 } else {
491 while(!done) sleep(1);
492 }
493
494 t1 = rdclock();
495
496 update_stats(&walltime_nsecs_stats, t1 - t0);
497
498 if (no_aggr) {
499 list_for_each_entry(counter, &evsel_list->entries, node) {
500 read_counter(counter);
501 perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
502 }
503 } else {
504 list_for_each_entry(counter, &evsel_list->entries, node) {
505 read_counter_aggr(counter);
506 perf_evsel__close_fd(counter, evsel_list->cpus->nr,
507 evsel_list->threads->nr);
508 }
509 }
510
511 return WEXITSTATUS(status);
512}
513
514static void print_noise_pct(double total, double avg)
515{
516 double pct = 0.0;
517
518 if (avg)
519 pct = 100.0*total/avg;
520
521 if (csv_output)
522 fprintf(stderr, "%s%.2f%%", csv_sep, pct);
523 else
524 fprintf(stderr, " ( +-%6.2f%% )", pct);
525}
526
527static void print_noise(struct perf_evsel *evsel, double avg)
528{
529 struct perf_stat *ps;
530
531 if (run_count == 1)
532 return;
533
534 ps = evsel->priv;
535 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
536}
537
538static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
539{
540 double msecs = avg / 1e6;
541 char cpustr[16] = { '\0', };
542 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
543
544 if (no_aggr)
545 sprintf(cpustr, "CPU%*d%s",
546 csv_output ? 0 : -4,
547 evsel_list->cpus->map[cpu], csv_sep);
548
549 fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel));
550
551 if (evsel->cgrp)
552 fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name);
553
554 if (csv_output)
555 return;
556
557 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
558 fprintf(stderr, " # %8.3f CPUs utilized ", avg / avg_stats(&walltime_nsecs_stats));
559}
560
561static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
562{
563 double total, ratio = 0.0;
564 const char *color;
565
566 total = avg_stats(&runtime_cycles_stats[cpu]);
567
568 if (total)
569 ratio = avg / total * 100.0;
570
571 color = PERF_COLOR_NORMAL;
572 if (ratio > 50.0)
573 color = PERF_COLOR_RED;
574 else if (ratio > 30.0)
575 color = PERF_COLOR_MAGENTA;
576 else if (ratio > 10.0)
577 color = PERF_COLOR_YELLOW;
578
579 fprintf(stderr, " # ");
580 color_fprintf(stderr, color, "%6.2f%%", ratio);
581 fprintf(stderr, " frontend cycles idle ");
582}
583
584static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
585{
586 double total, ratio = 0.0;
587 const char *color;
588
589 total = avg_stats(&runtime_cycles_stats[cpu]);
590
591 if (total)
592 ratio = avg / total * 100.0;
593
594 color = PERF_COLOR_NORMAL;
595 if (ratio > 75.0)
596 color = PERF_COLOR_RED;
597 else if (ratio > 50.0)
598 color = PERF_COLOR_MAGENTA;
599 else if (ratio > 20.0)
600 color = PERF_COLOR_YELLOW;
601
602 fprintf(stderr, " # ");
603 color_fprintf(stderr, color, "%6.2f%%", ratio);
604 fprintf(stderr, " backend cycles idle ");
605}
606
607static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
608{
609 double total, ratio = 0.0;
610 const char *color;
611
612 total = avg_stats(&runtime_branches_stats[cpu]);
613
614 if (total)
615 ratio = avg / total * 100.0;
616
617 color = PERF_COLOR_NORMAL;
618 if (ratio > 20.0)
619 color = PERF_COLOR_RED;
620 else if (ratio > 10.0)
621 color = PERF_COLOR_MAGENTA;
622 else if (ratio > 5.0)
623 color = PERF_COLOR_YELLOW;
624
625 fprintf(stderr, " # ");
626 color_fprintf(stderr, color, "%6.2f%%", ratio);
627 fprintf(stderr, " of all branches ");
628}
629
630static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
631{
632 double total, ratio = 0.0;
633 const char *color;
634
635 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
636
637 if (total)
638 ratio = avg / total * 100.0;
639
640 color = PERF_COLOR_NORMAL;
641 if (ratio > 20.0)
642 color = PERF_COLOR_RED;
643 else if (ratio > 10.0)
644 color = PERF_COLOR_MAGENTA;
645 else if (ratio > 5.0)
646 color = PERF_COLOR_YELLOW;
647
648 fprintf(stderr, " # ");
649 color_fprintf(stderr, color, "%6.2f%%", ratio);
650 fprintf(stderr, " of all L1-dcache hits ");
651}
652
653static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
654{
655 double total, ratio = 0.0;
656 const char *color;
657
658 total = avg_stats(&runtime_l1_icache_stats[cpu]);
659
660 if (total)
661 ratio = avg / total * 100.0;
662
663 color = PERF_COLOR_NORMAL;
664 if (ratio > 20.0)
665 color = PERF_COLOR_RED;
666 else if (ratio > 10.0)
667 color = PERF_COLOR_MAGENTA;
668 else if (ratio > 5.0)
669 color = PERF_COLOR_YELLOW;
670
671 fprintf(stderr, " # ");
672 color_fprintf(stderr, color, "%6.2f%%", ratio);
673 fprintf(stderr, " of all L1-icache hits ");
674}
675
676static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
677{
678 double total, ratio = 0.0;
679 const char *color;
680
681 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
682
683 if (total)
684 ratio = avg / total * 100.0;
685
686 color = PERF_COLOR_NORMAL;
687 if (ratio > 20.0)
688 color = PERF_COLOR_RED;
689 else if (ratio > 10.0)
690 color = PERF_COLOR_MAGENTA;
691 else if (ratio > 5.0)
692 color = PERF_COLOR_YELLOW;
693
694 fprintf(stderr, " # ");
695 color_fprintf(stderr, color, "%6.2f%%", ratio);
696 fprintf(stderr, " of all dTLB cache hits ");
697}
698
699static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
700{
701 double total, ratio = 0.0;
702 const char *color;
703
704 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
705
706 if (total)
707 ratio = avg / total * 100.0;
708
709 color = PERF_COLOR_NORMAL;
710 if (ratio > 20.0)
711 color = PERF_COLOR_RED;
712 else if (ratio > 10.0)
713 color = PERF_COLOR_MAGENTA;
714 else if (ratio > 5.0)
715 color = PERF_COLOR_YELLOW;
716
717 fprintf(stderr, " # ");
718 color_fprintf(stderr, color, "%6.2f%%", ratio);
719 fprintf(stderr, " of all iTLB cache hits ");
720}
721
722static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
723{
724 double total, ratio = 0.0;
725 const char *color;
726
727 total = avg_stats(&runtime_ll_cache_stats[cpu]);
728
729 if (total)
730 ratio = avg / total * 100.0;
731
732 color = PERF_COLOR_NORMAL;
733 if (ratio > 20.0)
734 color = PERF_COLOR_RED;
735 else if (ratio > 10.0)
736 color = PERF_COLOR_MAGENTA;
737 else if (ratio > 5.0)
738 color = PERF_COLOR_YELLOW;
739
740 fprintf(stderr, " # ");
741 color_fprintf(stderr, color, "%6.2f%%", ratio);
742 fprintf(stderr, " of all LL-cache hits ");
743}
744
745static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
746{
747 double total, ratio = 0.0;
748 char cpustr[16] = { '\0', };
749 const char *fmt;
750
751 if (csv_output)
752 fmt = "%s%.0f%s%s";
753 else if (big_num)
754 fmt = "%s%'18.0f%s%-25s";
755 else
756 fmt = "%s%18.0f%s%-25s";
757
758 if (no_aggr)
759 sprintf(cpustr, "CPU%*d%s",
760 csv_output ? 0 : -4,
761 evsel_list->cpus->map[cpu], csv_sep);
762 else
763 cpu = 0;
764
765 fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel));
766
767 if (evsel->cgrp)
768 fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name);
769
770 if (csv_output)
771 return;
772
773 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
774 total = avg_stats(&runtime_cycles_stats[cpu]);
775
776 if (total)
777 ratio = avg / total;
778
779 fprintf(stderr, " # %5.2f insns per cycle ", ratio);
780
781 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
782 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
783
784 if (total && avg) {
785 ratio = total / avg;
786 fprintf(stderr, "\n # %5.2f stalled cycles per insn", ratio);
787 }
788
789 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
790 runtime_branches_stats[cpu].n != 0) {
791 print_branch_misses(cpu, evsel, avg);
792 } else if (
793 evsel->attr.type == PERF_TYPE_HW_CACHE &&
794 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
795 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
796 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
797 runtime_l1_dcache_stats[cpu].n != 0) {
798 print_l1_dcache_misses(cpu, evsel, avg);
799 } else if (
800 evsel->attr.type == PERF_TYPE_HW_CACHE &&
801 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
802 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
803 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
804 runtime_l1_icache_stats[cpu].n != 0) {
805 print_l1_icache_misses(cpu, evsel, avg);
806 } else if (
807 evsel->attr.type == PERF_TYPE_HW_CACHE &&
808 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
809 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
810 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
811 runtime_dtlb_cache_stats[cpu].n != 0) {
812 print_dtlb_cache_misses(cpu, evsel, avg);
813 } else if (
814 evsel->attr.type == PERF_TYPE_HW_CACHE &&
815 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
816 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
817 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
818 runtime_itlb_cache_stats[cpu].n != 0) {
819 print_itlb_cache_misses(cpu, evsel, avg);
820 } else if (
821 evsel->attr.type == PERF_TYPE_HW_CACHE &&
822 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
823 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
824 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
825 runtime_ll_cache_stats[cpu].n != 0) {
826 print_ll_cache_misses(cpu, evsel, avg);
827 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
828 runtime_cacherefs_stats[cpu].n != 0) {
829 total = avg_stats(&runtime_cacherefs_stats[cpu]);
830
831 if (total)
832 ratio = avg * 100 / total;
833
834 fprintf(stderr, " # %8.3f %% of all cache refs ", ratio);
835
836 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
837 print_stalled_cycles_frontend(cpu, evsel, avg);
838 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
839 print_stalled_cycles_backend(cpu, evsel, avg);
840 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
841 total = avg_stats(&runtime_nsecs_stats[cpu]);
842
843 if (total)
844 ratio = 1.0 * avg / total;
845
846 fprintf(stderr, " # %8.3f GHz ", ratio);
847 } else if (runtime_nsecs_stats[cpu].n != 0) {
848 total = avg_stats(&runtime_nsecs_stats[cpu]);
849
850 if (total)
851 ratio = 1000.0 * avg / total;
852
853 fprintf(stderr, " # %8.3f M/sec ", ratio);
854 } else {
855 fprintf(stderr, " ");
856 }
857}
858
859/*
860 * Print out the results of a single counter:
861 * aggregated counts in system-wide mode
862 */
863static void print_counter_aggr(struct perf_evsel *counter)
864{
865 struct perf_stat *ps = counter->priv;
866 double avg = avg_stats(&ps->res_stats[0]);
867 int scaled = counter->counts->scaled;
868
869 if (scaled == -1) {
870 fprintf(stderr, "%*s%s%*s",
871 csv_output ? 0 : 18,
872 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
873 csv_sep,
874 csv_output ? 0 : -24,
875 event_name(counter));
876
877 if (counter->cgrp)
878 fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name);
879
880 fputc('\n', stderr);
881 return;
882 }
883
884 if (nsec_counter(counter))
885 nsec_printout(-1, counter, avg);
886 else
887 abs_printout(-1, counter, avg);
888
889 print_noise(counter, avg);
890
891 if (csv_output) {
892 fputc('\n', stderr);
893 return;
894 }
895
896 if (scaled) {
897 double avg_enabled, avg_running;
898
899 avg_enabled = avg_stats(&ps->res_stats[1]);
900 avg_running = avg_stats(&ps->res_stats[2]);
901
902 fprintf(stderr, " [%5.2f%%]", 100 * avg_running / avg_enabled);
903 }
904 fprintf(stderr, "\n");
905}
906
907/*
908 * Print out the results of a single counter:
909 * does not use aggregated count in system-wide
910 */
911static void print_counter(struct perf_evsel *counter)
912{
913 u64 ena, run, val;
914 int cpu;
915
916 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
917 val = counter->counts->cpu[cpu].val;
918 ena = counter->counts->cpu[cpu].ena;
919 run = counter->counts->cpu[cpu].run;
920 if (run == 0 || ena == 0) {
921 fprintf(stderr, "CPU%*d%s%*s%s%*s",
922 csv_output ? 0 : -4,
923 evsel_list->cpus->map[cpu], csv_sep,
924 csv_output ? 0 : 18,
925 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
926 csv_sep,
927 csv_output ? 0 : -24,
928 event_name(counter));
929
930 if (counter->cgrp)
931 fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name);
932
933 fputc('\n', stderr);
934 continue;
935 }
936
937 if (nsec_counter(counter))
938 nsec_printout(cpu, counter, val);
939 else
940 abs_printout(cpu, counter, val);
941
942 if (!csv_output) {
943 print_noise(counter, 1.0);
944
945 if (run != ena)
946 fprintf(stderr, " (%.2f%%)", 100.0 * run / ena);
947 }
948 fputc('\n', stderr);
949 }
950}
951
952static void print_stat(int argc, const char **argv)
953{
954 struct perf_evsel *counter;
955 int i;
956
957 fflush(stdout);
958
959 if (!csv_output) {
960 fprintf(stderr, "\n");
961 fprintf(stderr, " Performance counter stats for ");
962 if(target_pid == -1 && target_tid == -1) {
963 fprintf(stderr, "\'%s", argv[0]);
964 for (i = 1; i < argc; i++)
965 fprintf(stderr, " %s", argv[i]);
966 } else if (target_pid != -1)
967 fprintf(stderr, "process id \'%d", target_pid);
968 else
969 fprintf(stderr, "thread id \'%d", target_tid);
970
971 fprintf(stderr, "\'");
972 if (run_count > 1)
973 fprintf(stderr, " (%d runs)", run_count);
974 fprintf(stderr, ":\n\n");
975 }
976
977 if (no_aggr) {
978 list_for_each_entry(counter, &evsel_list->entries, node)
979 print_counter(counter);
980 } else {
981 list_for_each_entry(counter, &evsel_list->entries, node)
982 print_counter_aggr(counter);
983 }
984
985 if (!csv_output) {
986 if (!null_run)
987 fprintf(stderr, "\n");
988 fprintf(stderr, " %17.9f seconds time elapsed",
989 avg_stats(&walltime_nsecs_stats)/1e9);
990 if (run_count > 1) {
991 fprintf(stderr, " ");
992 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
993 avg_stats(&walltime_nsecs_stats));
994 }
995 fprintf(stderr, "\n\n");
996 }
997}
998
999static volatile int signr = -1;
1000
1001static void skip_signal(int signo)
1002{
1003 if(child_pid == -1)
1004 done = 1;
1005
1006 signr = signo;
1007}
1008
1009static void sig_atexit(void)
1010{
1011 if (child_pid != -1)
1012 kill(child_pid, SIGTERM);
1013
1014 if (signr == -1)
1015 return;
1016
1017 signal(signr, SIG_DFL);
1018 kill(getpid(), signr);
1019}
1020
1021static const char * const stat_usage[] = {
1022 "perf stat [<options>] [<command>]",
1023 NULL
1024};
1025
1026static int stat__set_big_num(const struct option *opt __used,
1027 const char *s __used, int unset)
1028{
1029 big_num_opt = unset ? 0 : 1;
1030 return 0;
1031}
1032
1033static const struct option options[] = {
1034 OPT_CALLBACK('e', "event", &evsel_list, "event",
1035 "event selector. use 'perf list' to list available events",
1036 parse_events_option),
1037 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1038 "event filter", parse_filter),
1039 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1040 "child tasks do not inherit counters"),
1041 OPT_INTEGER('p', "pid", &target_pid,
1042 "stat events on existing process id"),
1043 OPT_INTEGER('t', "tid", &target_tid,
1044 "stat events on existing thread id"),
1045 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1046 "system-wide collection from all CPUs"),
1047 OPT_BOOLEAN('g', "group", &group,
1048 "put the counters into a counter group"),
1049 OPT_BOOLEAN('c', "scale", &scale,
1050 "scale/normalize counters"),
1051 OPT_INCR('v', "verbose", &verbose,
1052 "be more verbose (show counter open errors, etc)"),
1053 OPT_INTEGER('r', "repeat", &run_count,
1054 "repeat command and print average + stddev (max: 100)"),
1055 OPT_BOOLEAN('n', "null", &null_run,
1056 "null run - dont start any counters"),
1057 OPT_INCR('d', "detailed", &detailed_run,
1058 "detailed run - start a lot of events"),
1059 OPT_BOOLEAN('S', "sync", &sync_run,
1060 "call sync() before starting a run"),
1061 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1062 "print large numbers with thousands\' separators",
1063 stat__set_big_num),
1064 OPT_STRING('C', "cpu", &cpu_list, "cpu",
1065 "list of cpus to monitor in system-wide"),
1066 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
1067 "disable CPU count aggregation"),
1068 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1069 "print counts with custom separator"),
1070 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1071 "monitor event in cgroup name only",
1072 parse_cgroups),
1073 OPT_END()
1074};
1075
1076/*
1077 * Add default attributes, if there were no attributes specified or
1078 * if -d/--detailed, -d -d or -d -d -d is used:
1079 */
1080static int add_default_attributes(void)
1081{
1082 struct perf_evsel *pos;
1083 size_t attr_nr = 0;
1084 size_t c;
1085
1086 /* Set attrs if no event is selected and !null_run: */
1087 if (null_run)
1088 return 0;
1089
1090 if (!evsel_list->nr_entries) {
1091 for (c = 0; c < ARRAY_SIZE(default_attrs); c++) {
1092 pos = perf_evsel__new(default_attrs + c, c + attr_nr);
1093 if (pos == NULL)
1094 return -1;
1095 perf_evlist__add(evsel_list, pos);
1096 }
1097 attr_nr += c;
1098 }
1099
1100 /* Detailed events get appended to the event list: */
1101
1102 if (detailed_run < 1)
1103 return 0;
1104
1105 /* Append detailed run extra attributes: */
1106 for (c = 0; c < ARRAY_SIZE(detailed_attrs); c++) {
1107 pos = perf_evsel__new(detailed_attrs + c, c + attr_nr);
1108 if (pos == NULL)
1109 return -1;
1110 perf_evlist__add(evsel_list, pos);
1111 }
1112 attr_nr += c;
1113
1114 if (detailed_run < 2)
1115 return 0;
1116
1117 /* Append very detailed run extra attributes: */
1118 for (c = 0; c < ARRAY_SIZE(very_detailed_attrs); c++) {
1119 pos = perf_evsel__new(very_detailed_attrs + c, c + attr_nr);
1120 if (pos == NULL)
1121 return -1;
1122 perf_evlist__add(evsel_list, pos);
1123 }
1124
1125 if (detailed_run < 3)
1126 return 0;
1127
1128 /* Append very, very detailed run extra attributes: */
1129 for (c = 0; c < ARRAY_SIZE(very_very_detailed_attrs); c++) {
1130 pos = perf_evsel__new(very_very_detailed_attrs + c, c + attr_nr);
1131 if (pos == NULL)
1132 return -1;
1133 perf_evlist__add(evsel_list, pos);
1134 }
1135
1136
1137 return 0;
1138}
1139
1140int cmd_stat(int argc, const char **argv, const char *prefix __used)
1141{
1142 struct perf_evsel *pos;
1143 int status = -ENOMEM;
1144
1145 setlocale(LC_ALL, "");
1146
1147 evsel_list = perf_evlist__new(NULL, NULL);
1148 if (evsel_list == NULL)
1149 return -ENOMEM;
1150
1151 argc = parse_options(argc, argv, options, stat_usage,
1152 PARSE_OPT_STOP_AT_NON_OPTION);
1153
1154 if (csv_sep)
1155 csv_output = true;
1156 else
1157 csv_sep = DEFAULT_SEPARATOR;
1158
1159 /*
1160 * let the spreadsheet do the pretty-printing
1161 */
1162 if (csv_output) {
1163 /* User explicitely passed -B? */
1164 if (big_num_opt == 1) {
1165 fprintf(stderr, "-B option not supported with -x\n");
1166 usage_with_options(stat_usage, options);
1167 } else /* Nope, so disable big number formatting */
1168 big_num = false;
1169 } else if (big_num_opt == 0) /* User passed --no-big-num */
1170 big_num = false;
1171
1172 if (!argc && target_pid == -1 && target_tid == -1)
1173 usage_with_options(stat_usage, options);
1174 if (run_count <= 0)
1175 usage_with_options(stat_usage, options);
1176
1177 /* no_aggr, cgroup are for system-wide only */
1178 if ((no_aggr || nr_cgroups) && !system_wide) {
1179 fprintf(stderr, "both cgroup and no-aggregation "
1180 "modes only available in system-wide mode\n");
1181
1182 usage_with_options(stat_usage, options);
1183 }
1184
1185 if (add_default_attributes())
1186 goto out;
1187
1188 if (target_pid != -1)
1189 target_tid = target_pid;
1190
1191 evsel_list->threads = thread_map__new(target_pid, target_tid);
1192 if (evsel_list->threads == NULL) {
1193 pr_err("Problems finding threads of monitor\n");
1194 usage_with_options(stat_usage, options);
1195 }
1196
1197 if (system_wide)
1198 evsel_list->cpus = cpu_map__new(cpu_list);
1199 else
1200 evsel_list->cpus = cpu_map__dummy_new();
1201
1202 if (evsel_list->cpus == NULL) {
1203 perror("failed to parse CPUs map");
1204 usage_with_options(stat_usage, options);
1205 return -1;
1206 }
1207
1208 list_for_each_entry(pos, &evsel_list->entries, node) {
1209 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
1210 perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 ||
1211 perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0)
1212 goto out_free_fd;
1213 }
1214
1215 /*
1216 * We dont want to block the signals - that would cause
1217 * child tasks to inherit that and Ctrl-C would not work.
1218 * What we want is for Ctrl-C to work in the exec()-ed
1219 * task, but being ignored by perf stat itself:
1220 */
1221 atexit(sig_atexit);
1222 signal(SIGINT, skip_signal);
1223 signal(SIGALRM, skip_signal);
1224 signal(SIGABRT, skip_signal);
1225
1226 status = 0;
1227 for (run_idx = 0; run_idx < run_count; run_idx++) {
1228 if (run_count != 1 && verbose)
1229 fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1);
1230
1231 if (sync_run)
1232 sync();
1233
1234 status = run_perf_stat(argc, argv);
1235 }
1236
1237 if (status != -1)
1238 print_stat(argc, argv);
1239out_free_fd:
1240 list_for_each_entry(pos, &evsel_list->entries, node)
1241 perf_evsel__free_stat_priv(pos);
1242 perf_evlist__delete_maps(evsel_list);
1243out:
1244 perf_evlist__delete(evsel_list);
1245 return status;
1246}
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
69static void print_stat(int argc, const char **argv);
70static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
71static void print_counter(struct perf_evsel *counter, char *prefix);
72static void print_aggr(char *prefix);
73
74/* Default events used for perf stat -T */
75static 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. */
88static 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 */
99enum {
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
109static struct perf_evlist *evsel_list;
110
111static struct target target = {
112 .uid = UINT_MAX,
113};
114
115enum aggr_mode {
116 AGGR_NONE,
117 AGGR_GLOBAL,
118 AGGR_SOCKET,
119 AGGR_CORE,
120};
121
122static int run_count = 1;
123static bool no_inherit = false;
124static bool scale = true;
125static enum aggr_mode aggr_mode = AGGR_GLOBAL;
126static volatile pid_t child_pid = -1;
127static bool null_run = false;
128static int detailed_run = 0;
129static bool transaction_run;
130static bool big_num = true;
131static int big_num_opt = -1;
132static const char *csv_sep = NULL;
133static bool csv_output = false;
134static bool group = false;
135static FILE *output = NULL;
136static const char *pre_cmd = NULL;
137static const char *post_cmd = NULL;
138static bool sync_run = false;
139static unsigned int interval = 0;
140static unsigned int initial_delay = 0;
141static unsigned int unit_width = 4; /* strlen("unit") */
142static bool forever = false;
143static struct timespec ref_time;
144static struct cpu_map *aggr_map;
145static int (*aggr_get_id)(struct cpu_map *m, int cpu);
146
147static volatile int done = 0;
148
149struct perf_stat {
150 struct stats res_stats[3];
151};
152
153static inline void diff_timespec(struct timespec *r, struct timespec *a,
154 struct timespec *b)
155{
156 r->tv_sec = a->tv_sec - b->tv_sec;
157 if (a->tv_nsec < b->tv_nsec) {
158 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
159 r->tv_sec--;
160 } else {
161 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
162 }
163}
164
165static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
166{
167 return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
168}
169
170static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
171{
172 return perf_evsel__cpus(evsel)->nr;
173}
174
175static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
176{
177 int i;
178 struct perf_stat *ps = evsel->priv;
179
180 for (i = 0; i < 3; i++)
181 init_stats(&ps->res_stats[i]);
182}
183
184static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
185{
186 evsel->priv = zalloc(sizeof(struct perf_stat));
187 if (evsel == NULL)
188 return -ENOMEM;
189 perf_evsel__reset_stat_priv(evsel);
190 return 0;
191}
192
193static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
194{
195 zfree(&evsel->priv);
196}
197
198static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
199{
200 void *addr;
201 size_t sz;
202
203 sz = sizeof(*evsel->counts) +
204 (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
205
206 addr = zalloc(sz);
207 if (!addr)
208 return -ENOMEM;
209
210 evsel->prev_raw_counts = addr;
211
212 return 0;
213}
214
215static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
216{
217 zfree(&evsel->prev_raw_counts);
218}
219
220static void perf_evlist__free_stats(struct perf_evlist *evlist)
221{
222 struct perf_evsel *evsel;
223
224 evlist__for_each(evlist, evsel) {
225 perf_evsel__free_stat_priv(evsel);
226 perf_evsel__free_counts(evsel);
227 perf_evsel__free_prev_raw_counts(evsel);
228 }
229}
230
231static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
232{
233 struct perf_evsel *evsel;
234
235 evlist__for_each(evlist, evsel) {
236 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
237 perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
238 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
239 goto out_free;
240 }
241
242 return 0;
243
244out_free:
245 perf_evlist__free_stats(evlist);
246 return -1;
247}
248
249static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
250static struct stats runtime_cycles_stats[MAX_NR_CPUS];
251static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
252static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
253static struct stats runtime_branches_stats[MAX_NR_CPUS];
254static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
255static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
256static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
257static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
258static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
259static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
260static struct stats runtime_cycles_in_tx_stats[MAX_NR_CPUS];
261static struct stats walltime_nsecs_stats;
262static struct stats runtime_transaction_stats[MAX_NR_CPUS];
263static struct stats runtime_elision_stats[MAX_NR_CPUS];
264
265static void perf_stat__reset_stats(struct perf_evlist *evlist)
266{
267 struct perf_evsel *evsel;
268
269 evlist__for_each(evlist, evsel) {
270 perf_evsel__reset_stat_priv(evsel);
271 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
272 }
273
274 memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
275 memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
276 memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
277 memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
278 memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
279 memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
280 memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
281 memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
282 memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
283 memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
284 memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
285 memset(runtime_cycles_in_tx_stats, 0,
286 sizeof(runtime_cycles_in_tx_stats));
287 memset(runtime_transaction_stats, 0,
288 sizeof(runtime_transaction_stats));
289 memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
290 memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
291}
292
293static int create_perf_stat_counter(struct perf_evsel *evsel)
294{
295 struct perf_event_attr *attr = &evsel->attr;
296
297 if (scale)
298 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
299 PERF_FORMAT_TOTAL_TIME_RUNNING;
300
301 attr->inherit = !no_inherit;
302
303 if (target__has_cpu(&target))
304 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
305
306 if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) {
307 attr->disabled = 1;
308 if (!initial_delay)
309 attr->enable_on_exec = 1;
310 }
311
312 return perf_evsel__open_per_thread(evsel, evsel_list->threads);
313}
314
315/*
316 * Does the counter have nsecs as a unit?
317 */
318static inline int nsec_counter(struct perf_evsel *evsel)
319{
320 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
321 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
322 return 1;
323
324 return 0;
325}
326
327static struct perf_evsel *nth_evsel(int n)
328{
329 static struct perf_evsel **array;
330 static int array_len;
331 struct perf_evsel *ev;
332 int j;
333
334 /* Assumes this only called when evsel_list does not change anymore. */
335 if (!array) {
336 evlist__for_each(evsel_list, ev)
337 array_len++;
338 array = malloc(array_len * sizeof(void *));
339 if (!array)
340 exit(ENOMEM);
341 j = 0;
342 evlist__for_each(evsel_list, ev)
343 array[j++] = ev;
344 }
345 if (n < array_len)
346 return array[n];
347 return NULL;
348}
349
350/*
351 * Update various tracking values we maintain to print
352 * more semantic information such as miss/hit ratios,
353 * instruction rates, etc:
354 */
355static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
356{
357 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
358 update_stats(&runtime_nsecs_stats[0], count[0]);
359 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
360 update_stats(&runtime_cycles_stats[0], count[0]);
361 else if (transaction_run &&
362 perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
363 update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
364 else if (transaction_run &&
365 perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
366 update_stats(&runtime_transaction_stats[0], count[0]);
367 else if (transaction_run &&
368 perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
369 update_stats(&runtime_elision_stats[0], count[0]);
370 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
371 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
372 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
373 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
374 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
375 update_stats(&runtime_branches_stats[0], count[0]);
376 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
377 update_stats(&runtime_cacherefs_stats[0], count[0]);
378 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
379 update_stats(&runtime_l1_dcache_stats[0], count[0]);
380 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
381 update_stats(&runtime_l1_icache_stats[0], count[0]);
382 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
383 update_stats(&runtime_ll_cache_stats[0], count[0]);
384 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
385 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
386 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
387 update_stats(&runtime_itlb_cache_stats[0], count[0]);
388}
389
390/*
391 * Read out the results of a single counter:
392 * aggregate counts across CPUs in system-wide mode
393 */
394static int read_counter_aggr(struct perf_evsel *counter)
395{
396 struct perf_stat *ps = counter->priv;
397 u64 *count = counter->counts->aggr.values;
398 int i;
399
400 if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
401 thread_map__nr(evsel_list->threads), scale) < 0)
402 return -1;
403
404 for (i = 0; i < 3; i++)
405 update_stats(&ps->res_stats[i], count[i]);
406
407 if (verbose) {
408 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
409 perf_evsel__name(counter), count[0], count[1], count[2]);
410 }
411
412 /*
413 * Save the full runtime - to allow normalization during printout:
414 */
415 update_shadow_stats(counter, count);
416
417 return 0;
418}
419
420/*
421 * Read out the results of a single counter:
422 * do not aggregate counts across CPUs in system-wide mode
423 */
424static int read_counter(struct perf_evsel *counter)
425{
426 u64 *count;
427 int cpu;
428
429 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
430 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
431 return -1;
432
433 count = counter->counts->cpu[cpu].values;
434
435 update_shadow_stats(counter, count);
436 }
437
438 return 0;
439}
440
441static void print_interval(void)
442{
443 static int num_print_interval;
444 struct perf_evsel *counter;
445 struct perf_stat *ps;
446 struct timespec ts, rs;
447 char prefix[64];
448
449 if (aggr_mode == AGGR_GLOBAL) {
450 evlist__for_each(evsel_list, counter) {
451 ps = counter->priv;
452 memset(ps->res_stats, 0, sizeof(ps->res_stats));
453 read_counter_aggr(counter);
454 }
455 } else {
456 evlist__for_each(evsel_list, counter) {
457 ps = counter->priv;
458 memset(ps->res_stats, 0, sizeof(ps->res_stats));
459 read_counter(counter);
460 }
461 }
462
463 clock_gettime(CLOCK_MONOTONIC, &ts);
464 diff_timespec(&rs, &ts, &ref_time);
465 sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
466
467 if (num_print_interval == 0 && !csv_output) {
468 switch (aggr_mode) {
469 case AGGR_SOCKET:
470 fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit");
471 break;
472 case AGGR_CORE:
473 fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit");
474 break;
475 case AGGR_NONE:
476 fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit");
477 break;
478 case AGGR_GLOBAL:
479 default:
480 fprintf(output, "# time counts %*s events\n", unit_width, "unit");
481 }
482 }
483
484 if (++num_print_interval == 25)
485 num_print_interval = 0;
486
487 switch (aggr_mode) {
488 case AGGR_CORE:
489 case AGGR_SOCKET:
490 print_aggr(prefix);
491 break;
492 case AGGR_NONE:
493 evlist__for_each(evsel_list, counter)
494 print_counter(counter, prefix);
495 break;
496 case AGGR_GLOBAL:
497 default:
498 evlist__for_each(evsel_list, counter)
499 print_counter_aggr(counter, prefix);
500 }
501
502 fflush(output);
503}
504
505static void handle_initial_delay(void)
506{
507 struct perf_evsel *counter;
508
509 if (initial_delay) {
510 const int ncpus = cpu_map__nr(evsel_list->cpus),
511 nthreads = thread_map__nr(evsel_list->threads);
512
513 usleep(initial_delay * 1000);
514 evlist__for_each(evsel_list, counter)
515 perf_evsel__enable(counter, ncpus, nthreads);
516 }
517}
518
519static volatile int workload_exec_errno;
520
521/*
522 * perf_evlist__prepare_workload will send a SIGUSR1
523 * if the fork fails, since we asked by setting its
524 * want_signal to true.
525 */
526static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
527 void *ucontext __maybe_unused)
528{
529 workload_exec_errno = info->si_value.sival_int;
530}
531
532static int __run_perf_stat(int argc, const char **argv)
533{
534 char msg[512];
535 unsigned long long t0, t1;
536 struct perf_evsel *counter;
537 struct timespec ts;
538 size_t l;
539 int status = 0;
540 const bool forks = (argc > 0);
541
542 if (interval) {
543 ts.tv_sec = interval / 1000;
544 ts.tv_nsec = (interval % 1000) * 1000000;
545 } else {
546 ts.tv_sec = 1;
547 ts.tv_nsec = 0;
548 }
549
550 if (forks) {
551 if (perf_evlist__prepare_workload(evsel_list, &target, argv, false,
552 workload_exec_failed_signal) < 0) {
553 perror("failed to prepare workload");
554 return -1;
555 }
556 child_pid = evsel_list->workload.pid;
557 }
558
559 if (group)
560 perf_evlist__set_leader(evsel_list);
561
562 evlist__for_each(evsel_list, counter) {
563 if (create_perf_stat_counter(counter) < 0) {
564 /*
565 * PPC returns ENXIO for HW counters until 2.6.37
566 * (behavior changed with commit b0a873e).
567 */
568 if (errno == EINVAL || errno == ENOSYS ||
569 errno == ENOENT || errno == EOPNOTSUPP ||
570 errno == ENXIO) {
571 if (verbose)
572 ui__warning("%s event is not supported by the kernel.\n",
573 perf_evsel__name(counter));
574 counter->supported = false;
575 continue;
576 }
577
578 perf_evsel__open_strerror(counter, &target,
579 errno, msg, sizeof(msg));
580 ui__error("%s\n", msg);
581
582 if (child_pid != -1)
583 kill(child_pid, SIGTERM);
584
585 return -1;
586 }
587 counter->supported = true;
588
589 l = strlen(counter->unit);
590 if (l > unit_width)
591 unit_width = l;
592 }
593
594 if (perf_evlist__apply_filters(evsel_list)) {
595 error("failed to set filter with %d (%s)\n", errno,
596 strerror(errno));
597 return -1;
598 }
599
600 /*
601 * Enable counters and exec the command:
602 */
603 t0 = rdclock();
604 clock_gettime(CLOCK_MONOTONIC, &ref_time);
605
606 if (forks) {
607 perf_evlist__start_workload(evsel_list);
608 handle_initial_delay();
609
610 if (interval) {
611 while (!waitpid(child_pid, &status, WNOHANG)) {
612 nanosleep(&ts, NULL);
613 print_interval();
614 }
615 }
616 wait(&status);
617
618 if (workload_exec_errno) {
619 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
620 pr_err("Workload failed: %s\n", emsg);
621 return -1;
622 }
623
624 if (WIFSIGNALED(status))
625 psignal(WTERMSIG(status), argv[0]);
626 } else {
627 handle_initial_delay();
628 while (!done) {
629 nanosleep(&ts, NULL);
630 if (interval)
631 print_interval();
632 }
633 }
634
635 t1 = rdclock();
636
637 update_stats(&walltime_nsecs_stats, t1 - t0);
638
639 if (aggr_mode == AGGR_GLOBAL) {
640 evlist__for_each(evsel_list, counter) {
641 read_counter_aggr(counter);
642 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
643 thread_map__nr(evsel_list->threads));
644 }
645 } else {
646 evlist__for_each(evsel_list, counter) {
647 read_counter(counter);
648 perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
649 }
650 }
651
652 return WEXITSTATUS(status);
653}
654
655static int run_perf_stat(int argc, const char **argv)
656{
657 int ret;
658
659 if (pre_cmd) {
660 ret = system(pre_cmd);
661 if (ret)
662 return ret;
663 }
664
665 if (sync_run)
666 sync();
667
668 ret = __run_perf_stat(argc, argv);
669 if (ret)
670 return ret;
671
672 if (post_cmd) {
673 ret = system(post_cmd);
674 if (ret)
675 return ret;
676 }
677
678 return ret;
679}
680
681static void print_noise_pct(double total, double avg)
682{
683 double pct = rel_stddev_stats(total, avg);
684
685 if (csv_output)
686 fprintf(output, "%s%.2f%%", csv_sep, pct);
687 else if (pct)
688 fprintf(output, " ( +-%6.2f%% )", pct);
689}
690
691static void print_noise(struct perf_evsel *evsel, double avg)
692{
693 struct perf_stat *ps;
694
695 if (run_count == 1)
696 return;
697
698 ps = evsel->priv;
699 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
700}
701
702static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
703{
704 switch (aggr_mode) {
705 case AGGR_CORE:
706 fprintf(output, "S%d-C%*d%s%*d%s",
707 cpu_map__id_to_socket(id),
708 csv_output ? 0 : -8,
709 cpu_map__id_to_cpu(id),
710 csv_sep,
711 csv_output ? 0 : 4,
712 nr,
713 csv_sep);
714 break;
715 case AGGR_SOCKET:
716 fprintf(output, "S%*d%s%*d%s",
717 csv_output ? 0 : -5,
718 id,
719 csv_sep,
720 csv_output ? 0 : 4,
721 nr,
722 csv_sep);
723 break;
724 case AGGR_NONE:
725 fprintf(output, "CPU%*d%s",
726 csv_output ? 0 : -4,
727 perf_evsel__cpus(evsel)->map[id], csv_sep);
728 break;
729 case AGGR_GLOBAL:
730 default:
731 break;
732 }
733}
734
735static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
736{
737 double msecs = avg / 1e6;
738 const char *fmt_v, *fmt_n;
739 char name[25];
740
741 fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
742 fmt_n = csv_output ? "%s" : "%-25s";
743
744 aggr_printout(evsel, cpu, nr);
745
746 scnprintf(name, sizeof(name), "%s%s",
747 perf_evsel__name(evsel), csv_output ? "" : " (msec)");
748
749 fprintf(output, fmt_v, msecs, csv_sep);
750
751 if (csv_output)
752 fprintf(output, "%s%s", evsel->unit, csv_sep);
753 else
754 fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
755
756 fprintf(output, fmt_n, name);
757
758 if (evsel->cgrp)
759 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
760
761 if (csv_output || interval)
762 return;
763
764 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
765 fprintf(output, " # %8.3f CPUs utilized ",
766 avg / avg_stats(&walltime_nsecs_stats));
767 else
768 fprintf(output, " ");
769}
770
771/* used for get_ratio_color() */
772enum grc_type {
773 GRC_STALLED_CYCLES_FE,
774 GRC_STALLED_CYCLES_BE,
775 GRC_CACHE_MISSES,
776 GRC_MAX_NR
777};
778
779static const char *get_ratio_color(enum grc_type type, double ratio)
780{
781 static const double grc_table[GRC_MAX_NR][3] = {
782 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
783 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
784 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
785 };
786 const char *color = PERF_COLOR_NORMAL;
787
788 if (ratio > grc_table[type][0])
789 color = PERF_COLOR_RED;
790 else if (ratio > grc_table[type][1])
791 color = PERF_COLOR_MAGENTA;
792 else if (ratio > grc_table[type][2])
793 color = PERF_COLOR_YELLOW;
794
795 return color;
796}
797
798static void print_stalled_cycles_frontend(int cpu,
799 struct perf_evsel *evsel
800 __maybe_unused, double avg)
801{
802 double total, ratio = 0.0;
803 const char *color;
804
805 total = avg_stats(&runtime_cycles_stats[cpu]);
806
807 if (total)
808 ratio = avg / total * 100.0;
809
810 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
811
812 fprintf(output, " # ");
813 color_fprintf(output, color, "%6.2f%%", ratio);
814 fprintf(output, " frontend cycles idle ");
815}
816
817static void print_stalled_cycles_backend(int cpu,
818 struct perf_evsel *evsel
819 __maybe_unused, double avg)
820{
821 double total, ratio = 0.0;
822 const char *color;
823
824 total = avg_stats(&runtime_cycles_stats[cpu]);
825
826 if (total)
827 ratio = avg / total * 100.0;
828
829 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
830
831 fprintf(output, " # ");
832 color_fprintf(output, color, "%6.2f%%", ratio);
833 fprintf(output, " backend cycles idle ");
834}
835
836static void print_branch_misses(int cpu,
837 struct perf_evsel *evsel __maybe_unused,
838 double avg)
839{
840 double total, ratio = 0.0;
841 const char *color;
842
843 total = avg_stats(&runtime_branches_stats[cpu]);
844
845 if (total)
846 ratio = avg / total * 100.0;
847
848 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
849
850 fprintf(output, " # ");
851 color_fprintf(output, color, "%6.2f%%", ratio);
852 fprintf(output, " of all branches ");
853}
854
855static void print_l1_dcache_misses(int cpu,
856 struct perf_evsel *evsel __maybe_unused,
857 double avg)
858{
859 double total, ratio = 0.0;
860 const char *color;
861
862 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
863
864 if (total)
865 ratio = avg / total * 100.0;
866
867 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
868
869 fprintf(output, " # ");
870 color_fprintf(output, color, "%6.2f%%", ratio);
871 fprintf(output, " of all L1-dcache hits ");
872}
873
874static void print_l1_icache_misses(int cpu,
875 struct perf_evsel *evsel __maybe_unused,
876 double avg)
877{
878 double total, ratio = 0.0;
879 const char *color;
880
881 total = avg_stats(&runtime_l1_icache_stats[cpu]);
882
883 if (total)
884 ratio = avg / total * 100.0;
885
886 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
887
888 fprintf(output, " # ");
889 color_fprintf(output, color, "%6.2f%%", ratio);
890 fprintf(output, " of all L1-icache hits ");
891}
892
893static void print_dtlb_cache_misses(int cpu,
894 struct perf_evsel *evsel __maybe_unused,
895 double avg)
896{
897 double total, ratio = 0.0;
898 const char *color;
899
900 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
901
902 if (total)
903 ratio = avg / total * 100.0;
904
905 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
906
907 fprintf(output, " # ");
908 color_fprintf(output, color, "%6.2f%%", ratio);
909 fprintf(output, " of all dTLB cache hits ");
910}
911
912static void print_itlb_cache_misses(int cpu,
913 struct perf_evsel *evsel __maybe_unused,
914 double avg)
915{
916 double total, ratio = 0.0;
917 const char *color;
918
919 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
920
921 if (total)
922 ratio = avg / total * 100.0;
923
924 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
925
926 fprintf(output, " # ");
927 color_fprintf(output, color, "%6.2f%%", ratio);
928 fprintf(output, " of all iTLB cache hits ");
929}
930
931static void print_ll_cache_misses(int cpu,
932 struct perf_evsel *evsel __maybe_unused,
933 double avg)
934{
935 double total, ratio = 0.0;
936 const char *color;
937
938 total = avg_stats(&runtime_ll_cache_stats[cpu]);
939
940 if (total)
941 ratio = avg / total * 100.0;
942
943 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
944
945 fprintf(output, " # ");
946 color_fprintf(output, color, "%6.2f%%", ratio);
947 fprintf(output, " of all LL-cache hits ");
948}
949
950static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
951{
952 double total, ratio = 0.0, total2;
953 double sc = evsel->scale;
954 const char *fmt;
955
956 if (csv_output) {
957 fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s";
958 } else {
959 if (big_num)
960 fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s";
961 else
962 fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s";
963 }
964
965 aggr_printout(evsel, cpu, nr);
966
967 if (aggr_mode == AGGR_GLOBAL)
968 cpu = 0;
969
970 fprintf(output, fmt, avg, csv_sep);
971
972 if (evsel->unit)
973 fprintf(output, "%-*s%s",
974 csv_output ? 0 : unit_width,
975 evsel->unit, csv_sep);
976
977 fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
978
979 if (evsel->cgrp)
980 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
981
982 if (csv_output || interval)
983 return;
984
985 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
986 total = avg_stats(&runtime_cycles_stats[cpu]);
987 if (total) {
988 ratio = avg / total;
989 fprintf(output, " # %5.2f insns per cycle ", ratio);
990 }
991 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
992 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
993
994 if (total && avg) {
995 ratio = total / avg;
996 fprintf(output, "\n");
997 if (aggr_mode == AGGR_NONE)
998 fprintf(output, " ");
999 fprintf(output, " # %5.2f stalled cycles per insn", ratio);
1000 }
1001
1002 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
1003 runtime_branches_stats[cpu].n != 0) {
1004 print_branch_misses(cpu, evsel, avg);
1005 } else if (
1006 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1007 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
1008 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1009 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1010 runtime_l1_dcache_stats[cpu].n != 0) {
1011 print_l1_dcache_misses(cpu, evsel, avg);
1012 } else if (
1013 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1014 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
1015 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1016 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1017 runtime_l1_icache_stats[cpu].n != 0) {
1018 print_l1_icache_misses(cpu, evsel, avg);
1019 } else if (
1020 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1021 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
1022 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1023 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1024 runtime_dtlb_cache_stats[cpu].n != 0) {
1025 print_dtlb_cache_misses(cpu, evsel, avg);
1026 } else if (
1027 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1028 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
1029 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1030 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1031 runtime_itlb_cache_stats[cpu].n != 0) {
1032 print_itlb_cache_misses(cpu, evsel, avg);
1033 } else if (
1034 evsel->attr.type == PERF_TYPE_HW_CACHE &&
1035 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
1036 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
1037 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
1038 runtime_ll_cache_stats[cpu].n != 0) {
1039 print_ll_cache_misses(cpu, evsel, avg);
1040 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
1041 runtime_cacherefs_stats[cpu].n != 0) {
1042 total = avg_stats(&runtime_cacherefs_stats[cpu]);
1043
1044 if (total)
1045 ratio = avg * 100 / total;
1046
1047 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
1048
1049 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
1050 print_stalled_cycles_frontend(cpu, evsel, avg);
1051 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
1052 print_stalled_cycles_backend(cpu, evsel, avg);
1053 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
1054 total = avg_stats(&runtime_nsecs_stats[cpu]);
1055
1056 if (total) {
1057 ratio = avg / total;
1058 fprintf(output, " # %8.3f GHz ", ratio);
1059 }
1060 } else if (transaction_run &&
1061 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1062 total = avg_stats(&runtime_cycles_stats[cpu]);
1063 if (total)
1064 fprintf(output,
1065 " # %5.2f%% transactional cycles ",
1066 100.0 * (avg / total));
1067 } else if (transaction_run &&
1068 perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1069 total = avg_stats(&runtime_cycles_stats[cpu]);
1070 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1071 if (total2 < avg)
1072 total2 = avg;
1073 if (total)
1074 fprintf(output,
1075 " # %5.2f%% aborted cycles ",
1076 100.0 * ((total2-avg) / total));
1077 } else if (transaction_run &&
1078 perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1079 avg > 0 &&
1080 runtime_cycles_in_tx_stats[cpu].n != 0) {
1081 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1082
1083 if (total)
1084 ratio = total / avg;
1085
1086 fprintf(output, " # %8.0f cycles / transaction ", ratio);
1087 } else if (transaction_run &&
1088 perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1089 avg > 0 &&
1090 runtime_cycles_in_tx_stats[cpu].n != 0) {
1091 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1092
1093 if (total)
1094 ratio = total / avg;
1095
1096 fprintf(output, " # %8.0f cycles / elision ", ratio);
1097 } else if (runtime_nsecs_stats[cpu].n != 0) {
1098 char unit = 'M';
1099
1100 total = avg_stats(&runtime_nsecs_stats[cpu]);
1101
1102 if (total)
1103 ratio = 1000.0 * avg / total;
1104 if (ratio < 0.001) {
1105 ratio *= 1000;
1106 unit = 'K';
1107 }
1108
1109 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
1110 } else {
1111 fprintf(output, " ");
1112 }
1113}
1114
1115static void print_aggr(char *prefix)
1116{
1117 struct perf_evsel *counter;
1118 int cpu, cpu2, s, s2, id, nr;
1119 double uval;
1120 u64 ena, run, val;
1121
1122 if (!(aggr_map || aggr_get_id))
1123 return;
1124
1125 for (s = 0; s < aggr_map->nr; s++) {
1126 id = aggr_map->map[s];
1127 evlist__for_each(evsel_list, counter) {
1128 val = ena = run = 0;
1129 nr = 0;
1130 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1131 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1132 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1133 if (s2 != id)
1134 continue;
1135 val += counter->counts->cpu[cpu].val;
1136 ena += counter->counts->cpu[cpu].ena;
1137 run += counter->counts->cpu[cpu].run;
1138 nr++;
1139 }
1140 if (prefix)
1141 fprintf(output, "%s", prefix);
1142
1143 if (run == 0 || ena == 0) {
1144 aggr_printout(counter, id, nr);
1145
1146 fprintf(output, "%*s%s",
1147 csv_output ? 0 : 18,
1148 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1149 csv_sep);
1150
1151 fprintf(output, "%-*s%s",
1152 csv_output ? 0 : unit_width,
1153 counter->unit, csv_sep);
1154
1155 fprintf(output, "%*s",
1156 csv_output ? 0 : -25,
1157 perf_evsel__name(counter));
1158
1159 if (counter->cgrp)
1160 fprintf(output, "%s%s",
1161 csv_sep, counter->cgrp->name);
1162
1163 fputc('\n', output);
1164 continue;
1165 }
1166 uval = val * counter->scale;
1167
1168 if (nsec_counter(counter))
1169 nsec_printout(id, nr, counter, uval);
1170 else
1171 abs_printout(id, nr, counter, uval);
1172
1173 if (!csv_output) {
1174 print_noise(counter, 1.0);
1175
1176 if (run != ena)
1177 fprintf(output, " (%.2f%%)",
1178 100.0 * run / ena);
1179 }
1180 fputc('\n', output);
1181 }
1182 }
1183}
1184
1185/*
1186 * Print out the results of a single counter:
1187 * aggregated counts in system-wide mode
1188 */
1189static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1190{
1191 struct perf_stat *ps = counter->priv;
1192 double avg = avg_stats(&ps->res_stats[0]);
1193 int scaled = counter->counts->scaled;
1194 double uval;
1195
1196 if (prefix)
1197 fprintf(output, "%s", prefix);
1198
1199 if (scaled == -1) {
1200 fprintf(output, "%*s%s",
1201 csv_output ? 0 : 18,
1202 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1203 csv_sep);
1204 fprintf(output, "%-*s%s",
1205 csv_output ? 0 : unit_width,
1206 counter->unit, csv_sep);
1207 fprintf(output, "%*s",
1208 csv_output ? 0 : -25,
1209 perf_evsel__name(counter));
1210
1211 if (counter->cgrp)
1212 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1213
1214 fputc('\n', output);
1215 return;
1216 }
1217
1218 uval = avg * counter->scale;
1219
1220 if (nsec_counter(counter))
1221 nsec_printout(-1, 0, counter, uval);
1222 else
1223 abs_printout(-1, 0, counter, uval);
1224
1225 print_noise(counter, avg);
1226
1227 if (csv_output) {
1228 fputc('\n', output);
1229 return;
1230 }
1231
1232 if (scaled) {
1233 double avg_enabled, avg_running;
1234
1235 avg_enabled = avg_stats(&ps->res_stats[1]);
1236 avg_running = avg_stats(&ps->res_stats[2]);
1237
1238 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1239 }
1240 fprintf(output, "\n");
1241}
1242
1243/*
1244 * Print out the results of a single counter:
1245 * does not use aggregated count in system-wide
1246 */
1247static void print_counter(struct perf_evsel *counter, char *prefix)
1248{
1249 u64 ena, run, val;
1250 double uval;
1251 int cpu;
1252
1253 for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1254 val = counter->counts->cpu[cpu].val;
1255 ena = counter->counts->cpu[cpu].ena;
1256 run = counter->counts->cpu[cpu].run;
1257
1258 if (prefix)
1259 fprintf(output, "%s", prefix);
1260
1261 if (run == 0 || ena == 0) {
1262 fprintf(output, "CPU%*d%s%*s%s",
1263 csv_output ? 0 : -4,
1264 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1265 csv_output ? 0 : 18,
1266 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1267 csv_sep);
1268
1269 fprintf(output, "%-*s%s",
1270 csv_output ? 0 : unit_width,
1271 counter->unit, csv_sep);
1272
1273 fprintf(output, "%*s",
1274 csv_output ? 0 : -25,
1275 perf_evsel__name(counter));
1276
1277 if (counter->cgrp)
1278 fprintf(output, "%s%s",
1279 csv_sep, counter->cgrp->name);
1280
1281 fputc('\n', output);
1282 continue;
1283 }
1284
1285 uval = val * counter->scale;
1286
1287 if (nsec_counter(counter))
1288 nsec_printout(cpu, 0, counter, uval);
1289 else
1290 abs_printout(cpu, 0, counter, uval);
1291
1292 if (!csv_output) {
1293 print_noise(counter, 1.0);
1294
1295 if (run != ena)
1296 fprintf(output, " (%.2f%%)",
1297 100.0 * run / ena);
1298 }
1299 fputc('\n', output);
1300 }
1301}
1302
1303static void print_stat(int argc, const char **argv)
1304{
1305 struct perf_evsel *counter;
1306 int i;
1307
1308 fflush(stdout);
1309
1310 if (!csv_output) {
1311 fprintf(output, "\n");
1312 fprintf(output, " Performance counter stats for ");
1313 if (target.system_wide)
1314 fprintf(output, "\'system wide");
1315 else if (target.cpu_list)
1316 fprintf(output, "\'CPU(s) %s", target.cpu_list);
1317 else if (!target__has_task(&target)) {
1318 fprintf(output, "\'%s", argv[0]);
1319 for (i = 1; i < argc; i++)
1320 fprintf(output, " %s", argv[i]);
1321 } else if (target.pid)
1322 fprintf(output, "process id \'%s", target.pid);
1323 else
1324 fprintf(output, "thread id \'%s", target.tid);
1325
1326 fprintf(output, "\'");
1327 if (run_count > 1)
1328 fprintf(output, " (%d runs)", run_count);
1329 fprintf(output, ":\n\n");
1330 }
1331
1332 switch (aggr_mode) {
1333 case AGGR_CORE:
1334 case AGGR_SOCKET:
1335 print_aggr(NULL);
1336 break;
1337 case AGGR_GLOBAL:
1338 evlist__for_each(evsel_list, counter)
1339 print_counter_aggr(counter, NULL);
1340 break;
1341 case AGGR_NONE:
1342 evlist__for_each(evsel_list, counter)
1343 print_counter(counter, NULL);
1344 break;
1345 default:
1346 break;
1347 }
1348
1349 if (!csv_output) {
1350 if (!null_run)
1351 fprintf(output, "\n");
1352 fprintf(output, " %17.9f seconds time elapsed",
1353 avg_stats(&walltime_nsecs_stats)/1e9);
1354 if (run_count > 1) {
1355 fprintf(output, " ");
1356 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1357 avg_stats(&walltime_nsecs_stats));
1358 }
1359 fprintf(output, "\n\n");
1360 }
1361}
1362
1363static volatile int signr = -1;
1364
1365static void skip_signal(int signo)
1366{
1367 if ((child_pid == -1) || interval)
1368 done = 1;
1369
1370 signr = signo;
1371 /*
1372 * render child_pid harmless
1373 * won't send SIGTERM to a random
1374 * process in case of race condition
1375 * and fast PID recycling
1376 */
1377 child_pid = -1;
1378}
1379
1380static void sig_atexit(void)
1381{
1382 sigset_t set, oset;
1383
1384 /*
1385 * avoid race condition with SIGCHLD handler
1386 * in skip_signal() which is modifying child_pid
1387 * goal is to avoid send SIGTERM to a random
1388 * process
1389 */
1390 sigemptyset(&set);
1391 sigaddset(&set, SIGCHLD);
1392 sigprocmask(SIG_BLOCK, &set, &oset);
1393
1394 if (child_pid != -1)
1395 kill(child_pid, SIGTERM);
1396
1397 sigprocmask(SIG_SETMASK, &oset, NULL);
1398
1399 if (signr == -1)
1400 return;
1401
1402 signal(signr, SIG_DFL);
1403 kill(getpid(), signr);
1404}
1405
1406static int stat__set_big_num(const struct option *opt __maybe_unused,
1407 const char *s __maybe_unused, int unset)
1408{
1409 big_num_opt = unset ? 0 : 1;
1410 return 0;
1411}
1412
1413static int perf_stat_init_aggr_mode(void)
1414{
1415 switch (aggr_mode) {
1416 case AGGR_SOCKET:
1417 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1418 perror("cannot build socket map");
1419 return -1;
1420 }
1421 aggr_get_id = cpu_map__get_socket;
1422 break;
1423 case AGGR_CORE:
1424 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1425 perror("cannot build core map");
1426 return -1;
1427 }
1428 aggr_get_id = cpu_map__get_core;
1429 break;
1430 case AGGR_NONE:
1431 case AGGR_GLOBAL:
1432 default:
1433 break;
1434 }
1435 return 0;
1436}
1437
1438static int setup_events(const char * const *attrs, unsigned len)
1439{
1440 unsigned i;
1441
1442 for (i = 0; i < len; i++) {
1443 if (parse_events(evsel_list, attrs[i]))
1444 return -1;
1445 }
1446 return 0;
1447}
1448
1449/*
1450 * Add default attributes, if there were no attributes specified or
1451 * if -d/--detailed, -d -d or -d -d -d is used:
1452 */
1453static int add_default_attributes(void)
1454{
1455 struct perf_event_attr default_attrs[] = {
1456
1457 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
1458 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
1459 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
1460 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
1461
1462 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
1463 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1464 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
1465 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
1466 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
1467 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
1468
1469};
1470
1471/*
1472 * Detailed stats (-d), covering the L1 and last level data caches:
1473 */
1474 struct perf_event_attr detailed_attrs[] = {
1475
1476 { .type = PERF_TYPE_HW_CACHE,
1477 .config =
1478 PERF_COUNT_HW_CACHE_L1D << 0 |
1479 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1480 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1481
1482 { .type = PERF_TYPE_HW_CACHE,
1483 .config =
1484 PERF_COUNT_HW_CACHE_L1D << 0 |
1485 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1486 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1487
1488 { .type = PERF_TYPE_HW_CACHE,
1489 .config =
1490 PERF_COUNT_HW_CACHE_LL << 0 |
1491 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1492 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1493
1494 { .type = PERF_TYPE_HW_CACHE,
1495 .config =
1496 PERF_COUNT_HW_CACHE_LL << 0 |
1497 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1498 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1499};
1500
1501/*
1502 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1503 */
1504 struct perf_event_attr very_detailed_attrs[] = {
1505
1506 { .type = PERF_TYPE_HW_CACHE,
1507 .config =
1508 PERF_COUNT_HW_CACHE_L1I << 0 |
1509 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1510 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1511
1512 { .type = PERF_TYPE_HW_CACHE,
1513 .config =
1514 PERF_COUNT_HW_CACHE_L1I << 0 |
1515 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1516 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1517
1518 { .type = PERF_TYPE_HW_CACHE,
1519 .config =
1520 PERF_COUNT_HW_CACHE_DTLB << 0 |
1521 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1522 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1523
1524 { .type = PERF_TYPE_HW_CACHE,
1525 .config =
1526 PERF_COUNT_HW_CACHE_DTLB << 0 |
1527 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1528 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1529
1530 { .type = PERF_TYPE_HW_CACHE,
1531 .config =
1532 PERF_COUNT_HW_CACHE_ITLB << 0 |
1533 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1534 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1535
1536 { .type = PERF_TYPE_HW_CACHE,
1537 .config =
1538 PERF_COUNT_HW_CACHE_ITLB << 0 |
1539 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1540 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1541
1542};
1543
1544/*
1545 * Very, very detailed stats (-d -d -d), adding prefetch events:
1546 */
1547 struct perf_event_attr very_very_detailed_attrs[] = {
1548
1549 { .type = PERF_TYPE_HW_CACHE,
1550 .config =
1551 PERF_COUNT_HW_CACHE_L1D << 0 |
1552 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1553 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
1554
1555 { .type = PERF_TYPE_HW_CACHE,
1556 .config =
1557 PERF_COUNT_HW_CACHE_L1D << 0 |
1558 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
1559 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
1560};
1561
1562 /* Set attrs if no event is selected and !null_run: */
1563 if (null_run)
1564 return 0;
1565
1566 if (transaction_run) {
1567 int err;
1568 if (pmu_have_event("cpu", "cycles-ct") &&
1569 pmu_have_event("cpu", "el-start"))
1570 err = setup_events(transaction_attrs,
1571 ARRAY_SIZE(transaction_attrs));
1572 else
1573 err = setup_events(transaction_limited_attrs,
1574 ARRAY_SIZE(transaction_limited_attrs));
1575 if (err < 0) {
1576 fprintf(stderr, "Cannot set up transaction events\n");
1577 return -1;
1578 }
1579 return 0;
1580 }
1581
1582 if (!evsel_list->nr_entries) {
1583 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1584 return -1;
1585 }
1586
1587 /* Detailed events get appended to the event list: */
1588
1589 if (detailed_run < 1)
1590 return 0;
1591
1592 /* Append detailed run extra attributes: */
1593 if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1594 return -1;
1595
1596 if (detailed_run < 2)
1597 return 0;
1598
1599 /* Append very detailed run extra attributes: */
1600 if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1601 return -1;
1602
1603 if (detailed_run < 3)
1604 return 0;
1605
1606 /* Append very, very detailed run extra attributes: */
1607 return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1608}
1609
1610int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1611{
1612 bool append_file = false;
1613 int output_fd = 0;
1614 const char *output_name = NULL;
1615 const struct option options[] = {
1616 OPT_BOOLEAN('T', "transaction", &transaction_run,
1617 "hardware transaction statistics"),
1618 OPT_CALLBACK('e', "event", &evsel_list, "event",
1619 "event selector. use 'perf list' to list available events",
1620 parse_events_option),
1621 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1622 "event filter", parse_filter),
1623 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1624 "child tasks do not inherit counters"),
1625 OPT_STRING('p', "pid", &target.pid, "pid",
1626 "stat events on existing process id"),
1627 OPT_STRING('t', "tid", &target.tid, "tid",
1628 "stat events on existing thread id"),
1629 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1630 "system-wide collection from all CPUs"),
1631 OPT_BOOLEAN('g', "group", &group,
1632 "put the counters into a counter group"),
1633 OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1634 OPT_INCR('v', "verbose", &verbose,
1635 "be more verbose (show counter open errors, etc)"),
1636 OPT_INTEGER('r', "repeat", &run_count,
1637 "repeat command and print average + stddev (max: 100, forever: 0)"),
1638 OPT_BOOLEAN('n', "null", &null_run,
1639 "null run - dont start any counters"),
1640 OPT_INCR('d', "detailed", &detailed_run,
1641 "detailed run - start a lot of events"),
1642 OPT_BOOLEAN('S', "sync", &sync_run,
1643 "call sync() before starting a run"),
1644 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1645 "print large numbers with thousands\' separators",
1646 stat__set_big_num),
1647 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1648 "list of cpus to monitor in system-wide"),
1649 OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1650 "disable CPU count aggregation", AGGR_NONE),
1651 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1652 "print counts with custom separator"),
1653 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1654 "monitor event in cgroup name only", parse_cgroups),
1655 OPT_STRING('o', "output", &output_name, "file", "output file name"),
1656 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1657 OPT_INTEGER(0, "log-fd", &output_fd,
1658 "log output to fd, instead of stderr"),
1659 OPT_STRING(0, "pre", &pre_cmd, "command",
1660 "command to run prior to the measured command"),
1661 OPT_STRING(0, "post", &post_cmd, "command",
1662 "command to run after to the measured command"),
1663 OPT_UINTEGER('I', "interval-print", &interval,
1664 "print counts at regular interval in ms (>= 100)"),
1665 OPT_SET_UINT(0, "per-socket", &aggr_mode,
1666 "aggregate counts per processor socket", AGGR_SOCKET),
1667 OPT_SET_UINT(0, "per-core", &aggr_mode,
1668 "aggregate counts per physical processor core", AGGR_CORE),
1669 OPT_UINTEGER('D', "delay", &initial_delay,
1670 "ms to wait before starting measurement after program start"),
1671 OPT_END()
1672 };
1673 const char * const stat_usage[] = {
1674 "perf stat [<options>] [<command>]",
1675 NULL
1676 };
1677 int status = -EINVAL, run_idx;
1678 const char *mode;
1679
1680 setlocale(LC_ALL, "");
1681
1682 evsel_list = perf_evlist__new();
1683 if (evsel_list == NULL)
1684 return -ENOMEM;
1685
1686 argc = parse_options(argc, argv, options, stat_usage,
1687 PARSE_OPT_STOP_AT_NON_OPTION);
1688
1689 output = stderr;
1690 if (output_name && strcmp(output_name, "-"))
1691 output = NULL;
1692
1693 if (output_name && output_fd) {
1694 fprintf(stderr, "cannot use both --output and --log-fd\n");
1695 parse_options_usage(stat_usage, options, "o", 1);
1696 parse_options_usage(NULL, options, "log-fd", 0);
1697 goto out;
1698 }
1699
1700 if (output_fd < 0) {
1701 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1702 parse_options_usage(stat_usage, options, "log-fd", 0);
1703 goto out;
1704 }
1705
1706 if (!output) {
1707 struct timespec tm;
1708 mode = append_file ? "a" : "w";
1709
1710 output = fopen(output_name, mode);
1711 if (!output) {
1712 perror("failed to create output file");
1713 return -1;
1714 }
1715 clock_gettime(CLOCK_REALTIME, &tm);
1716 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1717 } else if (output_fd > 0) {
1718 mode = append_file ? "a" : "w";
1719 output = fdopen(output_fd, mode);
1720 if (!output) {
1721 perror("Failed opening logfd");
1722 return -errno;
1723 }
1724 }
1725
1726 if (csv_sep) {
1727 csv_output = true;
1728 if (!strcmp(csv_sep, "\\t"))
1729 csv_sep = "\t";
1730 } else
1731 csv_sep = DEFAULT_SEPARATOR;
1732
1733 /*
1734 * let the spreadsheet do the pretty-printing
1735 */
1736 if (csv_output) {
1737 /* User explicitly passed -B? */
1738 if (big_num_opt == 1) {
1739 fprintf(stderr, "-B option not supported with -x\n");
1740 parse_options_usage(stat_usage, options, "B", 1);
1741 parse_options_usage(NULL, options, "x", 1);
1742 goto out;
1743 } else /* Nope, so disable big number formatting */
1744 big_num = false;
1745 } else if (big_num_opt == 0) /* User passed --no-big-num */
1746 big_num = false;
1747
1748 if (!argc && target__none(&target))
1749 usage_with_options(stat_usage, options);
1750
1751 if (run_count < 0) {
1752 pr_err("Run count must be a positive number\n");
1753 parse_options_usage(stat_usage, options, "r", 1);
1754 goto out;
1755 } else if (run_count == 0) {
1756 forever = true;
1757 run_count = 1;
1758 }
1759
1760 /* no_aggr, cgroup are for system-wide only */
1761 if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
1762 !target__has_cpu(&target)) {
1763 fprintf(stderr, "both cgroup and no-aggregation "
1764 "modes only available in system-wide mode\n");
1765
1766 parse_options_usage(stat_usage, options, "G", 1);
1767 parse_options_usage(NULL, options, "A", 1);
1768 parse_options_usage(NULL, options, "a", 1);
1769 goto out;
1770 }
1771
1772 if (add_default_attributes())
1773 goto out;
1774
1775 target__validate(&target);
1776
1777 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1778 if (target__has_task(&target)) {
1779 pr_err("Problems finding threads of monitor\n");
1780 parse_options_usage(stat_usage, options, "p", 1);
1781 parse_options_usage(NULL, options, "t", 1);
1782 } else if (target__has_cpu(&target)) {
1783 perror("failed to parse CPUs map");
1784 parse_options_usage(stat_usage, options, "C", 1);
1785 parse_options_usage(NULL, options, "a", 1);
1786 }
1787 goto out;
1788 }
1789 if (interval && interval < 100) {
1790 pr_err("print interval must be >= 100ms\n");
1791 parse_options_usage(stat_usage, options, "I", 1);
1792 goto out;
1793 }
1794
1795 if (perf_evlist__alloc_stats(evsel_list, interval))
1796 goto out;
1797
1798 if (perf_stat_init_aggr_mode())
1799 goto out;
1800
1801 /*
1802 * We dont want to block the signals - that would cause
1803 * child tasks to inherit that and Ctrl-C would not work.
1804 * What we want is for Ctrl-C to work in the exec()-ed
1805 * task, but being ignored by perf stat itself:
1806 */
1807 atexit(sig_atexit);
1808 if (!forever)
1809 signal(SIGINT, skip_signal);
1810 signal(SIGCHLD, skip_signal);
1811 signal(SIGALRM, skip_signal);
1812 signal(SIGABRT, skip_signal);
1813
1814 status = 0;
1815 for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1816 if (run_count != 1 && verbose)
1817 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1818 run_idx + 1);
1819
1820 status = run_perf_stat(argc, argv);
1821 if (forever && status != -1) {
1822 print_stat(argc, argv);
1823 perf_stat__reset_stats(evsel_list);
1824 }
1825 }
1826
1827 if (!forever && status != -1 && !interval)
1828 print_stat(argc, argv);
1829
1830 perf_evlist__free_stats(evsel_list);
1831out:
1832 perf_evlist__delete(evsel_list);
1833 return status;
1834}