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Commit | Line | Data |
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ddcacfa0 | 1 | /* |
bf9e1876 IM |
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: | |
ddcacfa0 | 8 | |
2cba3ffb | 9 | $ perf stat ./hackbench 10 |
ddcacfa0 | 10 | |
2cba3ffb | 11 | Time: 0.118 |
ddcacfa0 | 12 | |
2cba3ffb | 13 | Performance counter stats for './hackbench 10': |
ddcacfa0 | 14 | |
2cba3ffb IM |
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 | |
ddcacfa0 | 28 | |
5242519b | 29 | * |
2cba3ffb | 30 | * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
5242519b IM |
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> | |
6e750a8f | 39 | * Jaswinder Singh Rajput <jaswinder@kernel.org> |
5242519b IM |
40 | * |
41 | * Released under the GPL v2. (and only v2, not any later version) | |
ddcacfa0 IM |
42 | */ |
43 | ||
1a482f38 | 44 | #include "perf.h" |
16f762a2 | 45 | #include "builtin.h" |
f14d5707 | 46 | #include "util/cgroup.h" |
148be2c1 | 47 | #include "util/util.h" |
5242519b IM |
48 | #include "util/parse-options.h" |
49 | #include "util/parse-events.h" | |
4cabc3d1 | 50 | #include "util/pmu.h" |
8f28827a | 51 | #include "util/event.h" |
361c99a6 | 52 | #include "util/evlist.h" |
69aad6f1 | 53 | #include "util/evsel.h" |
8f28827a | 54 | #include "util/debug.h" |
a5d243d0 | 55 | #include "util/color.h" |
0007ecea | 56 | #include "util/stat.h" |
60666c63 | 57 | #include "util/header.h" |
a12b51c4 | 58 | #include "util/cpumap.h" |
d6d901c2 | 59 | #include "util/thread.h" |
fd78260b | 60 | #include "util/thread_map.h" |
ddcacfa0 | 61 | |
1f16c575 | 62 | #include <stdlib.h> |
ddcacfa0 | 63 | #include <sys/prctl.h> |
5af52b51 | 64 | #include <locale.h> |
16c8a109 | 65 | |
d7470b6a | 66 | #define DEFAULT_SEPARATOR " " |
2cee77c4 DA |
67 | #define CNTR_NOT_SUPPORTED "<not supported>" |
68 | #define CNTR_NOT_COUNTED "<not counted>" | |
d7470b6a | 69 | |
13370a9b SE |
70 | static void print_stat(int argc, const char **argv); |
71 | static void print_counter_aggr(struct perf_evsel *counter, char *prefix); | |
72 | static void print_counter(struct perf_evsel *counter, char *prefix); | |
86ee6e18 | 73 | static void print_aggr(char *prefix); |
13370a9b | 74 | |
4cabc3d1 | 75 | /* Default events used for perf stat -T */ |
a454742c JO |
76 | static const char *transaction_attrs = { |
77 | "task-clock," | |
4cabc3d1 AK |
78 | "{" |
79 | "instructions," | |
80 | "cycles," | |
81 | "cpu/cycles-t/," | |
82 | "cpu/tx-start/," | |
83 | "cpu/el-start/," | |
84 | "cpu/cycles-ct/" | |
85 | "}" | |
86 | }; | |
87 | ||
88 | /* More limited version when the CPU does not have all events. */ | |
a454742c JO |
89 | static const char * transaction_limited_attrs = { |
90 | "task-clock," | |
4cabc3d1 AK |
91 | "{" |
92 | "instructions," | |
93 | "cycles," | |
94 | "cpu/cycles-t/," | |
95 | "cpu/tx-start/" | |
96 | "}" | |
97 | }; | |
98 | ||
666e6d48 | 99 | static struct perf_evlist *evsel_list; |
361c99a6 | 100 | |
602ad878 | 101 | static struct target target = { |
77a6f014 NK |
102 | .uid = UINT_MAX, |
103 | }; | |
ddcacfa0 | 104 | |
3d632595 | 105 | static int run_count = 1; |
2e6cdf99 | 106 | static bool no_inherit = false; |
c0555642 | 107 | static bool scale = true; |
86ee6e18 | 108 | static enum aggr_mode aggr_mode = AGGR_GLOBAL; |
d07f0b12 | 109 | static volatile pid_t child_pid = -1; |
c0555642 | 110 | static bool null_run = false; |
2cba3ffb | 111 | static int detailed_run = 0; |
4cabc3d1 | 112 | static bool transaction_run; |
201e0b06 | 113 | static bool big_num = true; |
d7470b6a | 114 | static int big_num_opt = -1; |
d7470b6a SE |
115 | static const char *csv_sep = NULL; |
116 | static bool csv_output = false; | |
43bece79 | 117 | static bool group = false; |
4aa9015f | 118 | static FILE *output = NULL; |
1f16c575 PZ |
119 | static const char *pre_cmd = NULL; |
120 | static const char *post_cmd = NULL; | |
121 | static bool sync_run = false; | |
13370a9b | 122 | static unsigned int interval = 0; |
41191688 | 123 | static unsigned int initial_delay = 0; |
410136f5 | 124 | static unsigned int unit_width = 4; /* strlen("unit") */ |
a7e191c3 | 125 | static bool forever = false; |
13370a9b | 126 | static struct timespec ref_time; |
86ee6e18 SE |
127 | static struct cpu_map *aggr_map; |
128 | static int (*aggr_get_id)(struct cpu_map *m, int cpu); | |
5af52b51 | 129 | |
60666c63 LW |
130 | static volatile int done = 0; |
131 | ||
13370a9b SE |
132 | static inline void diff_timespec(struct timespec *r, struct timespec *a, |
133 | struct timespec *b) | |
134 | { | |
135 | r->tv_sec = a->tv_sec - b->tv_sec; | |
136 | if (a->tv_nsec < b->tv_nsec) { | |
137 | r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec; | |
138 | r->tv_sec--; | |
139 | } else { | |
140 | r->tv_nsec = a->tv_nsec - b->tv_nsec ; | |
141 | } | |
142 | } | |
143 | ||
144 | static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel) | |
145 | { | |
146 | return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus; | |
147 | } | |
148 | ||
149 | static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel) | |
150 | { | |
151 | return perf_evsel__cpus(evsel)->nr; | |
152 | } | |
153 | ||
a7e191c3 FD |
154 | static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel) |
155 | { | |
90f6bb6c AK |
156 | int i; |
157 | struct perf_stat *ps = evsel->priv; | |
158 | ||
159 | for (i = 0; i < 3; i++) | |
160 | init_stats(&ps->res_stats[i]); | |
e2f56da1 JO |
161 | |
162 | perf_stat_evsel_id_init(evsel); | |
a7e191c3 FD |
163 | } |
164 | ||
c52b12ed | 165 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel) |
69aad6f1 | 166 | { |
c52b12ed | 167 | evsel->priv = zalloc(sizeof(struct perf_stat)); |
d180ac14 | 168 | if (evsel->priv == NULL) |
90f6bb6c AK |
169 | return -ENOMEM; |
170 | perf_evsel__reset_stat_priv(evsel); | |
171 | return 0; | |
69aad6f1 ACM |
172 | } |
173 | ||
174 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) | |
175 | { | |
04662523 | 176 | zfree(&evsel->priv); |
69aad6f1 ACM |
177 | } |
178 | ||
13370a9b | 179 | static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel) |
7ae92e74 | 180 | { |
9df38e82 | 181 | struct perf_counts *counts; |
13370a9b | 182 | |
9df38e82 JO |
183 | counts = perf_counts__new(perf_evsel__nr_cpus(evsel)); |
184 | if (counts) | |
185 | evsel->prev_raw_counts = counts; | |
13370a9b | 186 | |
9df38e82 | 187 | return counts ? 0 : -ENOMEM; |
7ae92e74 YZ |
188 | } |
189 | ||
13370a9b | 190 | static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel) |
7ae92e74 | 191 | { |
9df38e82 JO |
192 | perf_counts__delete(evsel->prev_raw_counts); |
193 | evsel->prev_raw_counts = NULL; | |
7ae92e74 YZ |
194 | } |
195 | ||
d134ffb9 ACM |
196 | static void perf_evlist__free_stats(struct perf_evlist *evlist) |
197 | { | |
198 | struct perf_evsel *evsel; | |
199 | ||
0050f7aa | 200 | evlist__for_each(evlist, evsel) { |
d134ffb9 ACM |
201 | perf_evsel__free_stat_priv(evsel); |
202 | perf_evsel__free_counts(evsel); | |
203 | perf_evsel__free_prev_raw_counts(evsel); | |
204 | } | |
205 | } | |
206 | ||
207 | static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw) | |
208 | { | |
209 | struct perf_evsel *evsel; | |
210 | ||
0050f7aa | 211 | evlist__for_each(evlist, evsel) { |
d134ffb9 ACM |
212 | if (perf_evsel__alloc_stat_priv(evsel) < 0 || |
213 | perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 || | |
214 | (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0)) | |
215 | goto out_free; | |
216 | } | |
217 | ||
218 | return 0; | |
219 | ||
220 | out_free: | |
221 | perf_evlist__free_stats(evlist); | |
222 | return -1; | |
223 | } | |
224 | ||
1eda3b21 JO |
225 | static void perf_stat__reset_stats(struct perf_evlist *evlist) |
226 | { | |
227 | struct perf_evsel *evsel; | |
228 | ||
229 | evlist__for_each(evlist, evsel) { | |
230 | perf_evsel__reset_stat_priv(evsel); | |
231 | perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel)); | |
232 | } | |
233 | ||
f87027b9 | 234 | perf_stat__reset_shadow_stats(); |
1eda3b21 JO |
235 | } |
236 | ||
cac21425 | 237 | static int create_perf_stat_counter(struct perf_evsel *evsel) |
ddcacfa0 | 238 | { |
69aad6f1 | 239 | struct perf_event_attr *attr = &evsel->attr; |
727ab04e | 240 | |
ddcacfa0 | 241 | if (scale) |
a21ca2ca IM |
242 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
243 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 244 | |
5d2cd909 ACM |
245 | attr->inherit = !no_inherit; |
246 | ||
602ad878 | 247 | if (target__has_cpu(&target)) |
594ac61a | 248 | return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel)); |
5622c07b | 249 | |
602ad878 | 250 | if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) { |
48290609 | 251 | attr->disabled = 1; |
41191688 AK |
252 | if (!initial_delay) |
253 | attr->enable_on_exec = 1; | |
ddcacfa0 | 254 | } |
084ab9f8 | 255 | |
594ac61a | 256 | return perf_evsel__open_per_thread(evsel, evsel_list->threads); |
ddcacfa0 IM |
257 | } |
258 | ||
c04f5e5d IM |
259 | /* |
260 | * Does the counter have nsecs as a unit? | |
261 | */ | |
daec78a0 | 262 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 263 | { |
daec78a0 ACM |
264 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
265 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
266 | return 1; |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
779d0b99 JO |
271 | static void zero_per_pkg(struct perf_evsel *counter) |
272 | { | |
273 | if (counter->per_pkg_mask) | |
274 | memset(counter->per_pkg_mask, 0, MAX_NR_CPUS); | |
275 | } | |
276 | ||
277 | static int check_per_pkg(struct perf_evsel *counter, int cpu, bool *skip) | |
278 | { | |
279 | unsigned long *mask = counter->per_pkg_mask; | |
280 | struct cpu_map *cpus = perf_evsel__cpus(counter); | |
281 | int s; | |
282 | ||
283 | *skip = false; | |
284 | ||
285 | if (!counter->per_pkg) | |
286 | return 0; | |
287 | ||
288 | if (cpu_map__empty(cpus)) | |
289 | return 0; | |
290 | ||
291 | if (!mask) { | |
292 | mask = zalloc(MAX_NR_CPUS); | |
293 | if (!mask) | |
294 | return -ENOMEM; | |
295 | ||
296 | counter->per_pkg_mask = mask; | |
297 | } | |
298 | ||
299 | s = cpu_map__get_socket(cpus, cpu); | |
300 | if (s < 0) | |
301 | return -1; | |
302 | ||
303 | *skip = test_and_set_bit(s, mask) == 1; | |
304 | return 0; | |
305 | } | |
306 | ||
060c4f9c JO |
307 | static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused, |
308 | struct perf_counts_values *count) | |
309 | { | |
1971f59f | 310 | struct perf_counts_values *aggr = &evsel->counts->aggr; |
779d0b99 JO |
311 | static struct perf_counts_values zero; |
312 | bool skip = false; | |
313 | ||
314 | if (check_per_pkg(evsel, cpu, &skip)) { | |
315 | pr_err("failed to read per-pkg counter\n"); | |
316 | return -1; | |
317 | } | |
318 | ||
319 | if (skip) | |
320 | count = &zero; | |
1971f59f | 321 | |
060c4f9c JO |
322 | switch (aggr_mode) { |
323 | case AGGR_CORE: | |
324 | case AGGR_SOCKET: | |
325 | case AGGR_NONE: | |
6c0345b7 JO |
326 | if (!evsel->snapshot) |
327 | perf_evsel__compute_deltas(evsel, cpu, count); | |
060c4f9c JO |
328 | perf_counts_values__scale(count, scale, NULL); |
329 | evsel->counts->cpu[cpu] = *count; | |
56f0fd45 | 330 | if (aggr_mode == AGGR_NONE) |
f87027b9 | 331 | perf_stat__update_shadow_stats(evsel, count->values, cpu); |
060c4f9c JO |
332 | break; |
333 | case AGGR_GLOBAL: | |
1971f59f JO |
334 | aggr->val += count->val; |
335 | if (scale) { | |
336 | aggr->ena += count->ena; | |
337 | aggr->run += count->run; | |
338 | } | |
060c4f9c JO |
339 | default: |
340 | break; | |
341 | } | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
1971f59f JO |
346 | static int read_counter(struct perf_evsel *counter); |
347 | ||
c04f5e5d | 348 | /* |
2996f5dd | 349 | * Read out the results of a single counter: |
f5b4a9c3 | 350 | * aggregate counts across CPUs in system-wide mode |
c04f5e5d | 351 | */ |
c52b12ed | 352 | static int read_counter_aggr(struct perf_evsel *counter) |
c04f5e5d | 353 | { |
1971f59f | 354 | struct perf_counts_values *aggr = &counter->counts->aggr; |
69aad6f1 | 355 | struct perf_stat *ps = counter->priv; |
c52b12ed ACM |
356 | u64 *count = counter->counts->aggr.values; |
357 | int i; | |
2996f5dd | 358 | |
1971f59f JO |
359 | aggr->val = aggr->ena = aggr->run = 0; |
360 | ||
361 | if (read_counter(counter)) | |
c52b12ed | 362 | return -1; |
9e9772c4 | 363 | |
6c0345b7 JO |
364 | if (!counter->snapshot) |
365 | perf_evsel__compute_deltas(counter, -1, aggr); | |
1971f59f JO |
366 | perf_counts_values__scale(aggr, scale, &counter->counts->scaled); |
367 | ||
9e9772c4 | 368 | for (i = 0; i < 3; i++) |
69aad6f1 | 369 | update_stats(&ps->res_stats[i], count[i]); |
9e9772c4 PZ |
370 | |
371 | if (verbose) { | |
4aa9015f | 372 | fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
7289f83c | 373 | perf_evsel__name(counter), count[0], count[1], count[2]); |
9e9772c4 PZ |
374 | } |
375 | ||
be1ac0d8 IM |
376 | /* |
377 | * Save the full runtime - to allow normalization during printout: | |
378 | */ | |
f87027b9 | 379 | perf_stat__update_shadow_stats(counter, count, 0); |
c52b12ed ACM |
380 | |
381 | return 0; | |
f5b4a9c3 SE |
382 | } |
383 | ||
384 | /* | |
385 | * Read out the results of a single counter: | |
386 | * do not aggregate counts across CPUs in system-wide mode | |
387 | */ | |
c52b12ed | 388 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 389 | { |
9bf1a529 JO |
390 | int nthreads = thread_map__nr(evsel_list->threads); |
391 | int ncpus = perf_evsel__nr_cpus(counter); | |
392 | int cpu, thread; | |
f5b4a9c3 | 393 | |
3b4331d9 SP |
394 | if (!counter->supported) |
395 | return -ENOENT; | |
396 | ||
9bf1a529 JO |
397 | if (counter->system_wide) |
398 | nthreads = 1; | |
399 | ||
779d0b99 JO |
400 | if (counter->per_pkg) |
401 | zero_per_pkg(counter); | |
402 | ||
9bf1a529 JO |
403 | for (thread = 0; thread < nthreads; thread++) { |
404 | for (cpu = 0; cpu < ncpus; cpu++) { | |
405 | if (perf_evsel__read_cb(counter, cpu, thread, read_cb)) | |
406 | return -1; | |
407 | } | |
f5b4a9c3 | 408 | } |
c52b12ed ACM |
409 | |
410 | return 0; | |
2996f5dd IM |
411 | } |
412 | ||
13370a9b SE |
413 | static void print_interval(void) |
414 | { | |
415 | static int num_print_interval; | |
416 | struct perf_evsel *counter; | |
417 | struct perf_stat *ps; | |
418 | struct timespec ts, rs; | |
419 | char prefix[64]; | |
420 | ||
86ee6e18 | 421 | if (aggr_mode == AGGR_GLOBAL) { |
0050f7aa | 422 | evlist__for_each(evsel_list, counter) { |
13370a9b SE |
423 | ps = counter->priv; |
424 | memset(ps->res_stats, 0, sizeof(ps->res_stats)); | |
86ee6e18 | 425 | read_counter_aggr(counter); |
13370a9b | 426 | } |
86ee6e18 | 427 | } else { |
0050f7aa | 428 | evlist__for_each(evsel_list, counter) { |
13370a9b SE |
429 | ps = counter->priv; |
430 | memset(ps->res_stats, 0, sizeof(ps->res_stats)); | |
86ee6e18 | 431 | read_counter(counter); |
13370a9b SE |
432 | } |
433 | } | |
86ee6e18 | 434 | |
13370a9b SE |
435 | clock_gettime(CLOCK_MONOTONIC, &ts); |
436 | diff_timespec(&rs, &ts, &ref_time); | |
437 | sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep); | |
438 | ||
439 | if (num_print_interval == 0 && !csv_output) { | |
86ee6e18 SE |
440 | switch (aggr_mode) { |
441 | case AGGR_SOCKET: | |
410136f5 | 442 | fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit"); |
86ee6e18 | 443 | break; |
12c08a9f | 444 | case AGGR_CORE: |
410136f5 | 445 | fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit"); |
12c08a9f | 446 | break; |
86ee6e18 | 447 | case AGGR_NONE: |
410136f5 | 448 | fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit"); |
86ee6e18 SE |
449 | break; |
450 | case AGGR_GLOBAL: | |
451 | default: | |
410136f5 | 452 | fprintf(output, "# time counts %*s events\n", unit_width, "unit"); |
86ee6e18 | 453 | } |
13370a9b SE |
454 | } |
455 | ||
456 | if (++num_print_interval == 25) | |
457 | num_print_interval = 0; | |
458 | ||
86ee6e18 | 459 | switch (aggr_mode) { |
12c08a9f | 460 | case AGGR_CORE: |
86ee6e18 SE |
461 | case AGGR_SOCKET: |
462 | print_aggr(prefix); | |
463 | break; | |
464 | case AGGR_NONE: | |
0050f7aa | 465 | evlist__for_each(evsel_list, counter) |
13370a9b | 466 | print_counter(counter, prefix); |
86ee6e18 SE |
467 | break; |
468 | case AGGR_GLOBAL: | |
469 | default: | |
0050f7aa | 470 | evlist__for_each(evsel_list, counter) |
13370a9b SE |
471 | print_counter_aggr(counter, prefix); |
472 | } | |
2bbf03f1 AK |
473 | |
474 | fflush(output); | |
13370a9b SE |
475 | } |
476 | ||
41191688 AK |
477 | static void handle_initial_delay(void) |
478 | { | |
479 | struct perf_evsel *counter; | |
480 | ||
481 | if (initial_delay) { | |
482 | const int ncpus = cpu_map__nr(evsel_list->cpus), | |
483 | nthreads = thread_map__nr(evsel_list->threads); | |
484 | ||
485 | usleep(initial_delay * 1000); | |
0050f7aa | 486 | evlist__for_each(evsel_list, counter) |
41191688 AK |
487 | perf_evsel__enable(counter, ncpus, nthreads); |
488 | } | |
489 | } | |
490 | ||
f33cbe72 | 491 | static volatile int workload_exec_errno; |
6af206fd ACM |
492 | |
493 | /* | |
494 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
495 | * if the fork fails, since we asked by setting its | |
496 | * want_signal to true. | |
497 | */ | |
f33cbe72 ACM |
498 | static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, |
499 | void *ucontext __maybe_unused) | |
6af206fd | 500 | { |
f33cbe72 | 501 | workload_exec_errno = info->si_value.sival_int; |
6af206fd ACM |
502 | } |
503 | ||
acf28922 | 504 | static int __run_perf_stat(int argc, const char **argv) |
42202dd5 | 505 | { |
56e52e85 | 506 | char msg[512]; |
42202dd5 | 507 | unsigned long long t0, t1; |
cac21425 | 508 | struct perf_evsel *counter; |
13370a9b | 509 | struct timespec ts; |
410136f5 | 510 | size_t l; |
42202dd5 | 511 | int status = 0; |
6be2850e | 512 | const bool forks = (argc > 0); |
42202dd5 | 513 | |
13370a9b SE |
514 | if (interval) { |
515 | ts.tv_sec = interval / 1000; | |
516 | ts.tv_nsec = (interval % 1000) * 1000000; | |
517 | } else { | |
518 | ts.tv_sec = 1; | |
519 | ts.tv_nsec = 0; | |
520 | } | |
521 | ||
60666c63 | 522 | if (forks) { |
735f7e0b ACM |
523 | if (perf_evlist__prepare_workload(evsel_list, &target, argv, false, |
524 | workload_exec_failed_signal) < 0) { | |
acf28922 NK |
525 | perror("failed to prepare workload"); |
526 | return -1; | |
60666c63 | 527 | } |
d20a47e7 | 528 | child_pid = evsel_list->workload.pid; |
051ae7f7 PM |
529 | } |
530 | ||
6a4bb04c | 531 | if (group) |
63dab225 | 532 | perf_evlist__set_leader(evsel_list); |
6a4bb04c | 533 | |
0050f7aa | 534 | evlist__for_each(evsel_list, counter) { |
cac21425 | 535 | if (create_perf_stat_counter(counter) < 0) { |
979987a5 DA |
536 | /* |
537 | * PPC returns ENXIO for HW counters until 2.6.37 | |
538 | * (behavior changed with commit b0a873e). | |
539 | */ | |
38f6ae1e | 540 | if (errno == EINVAL || errno == ENOSYS || |
979987a5 DA |
541 | errno == ENOENT || errno == EOPNOTSUPP || |
542 | errno == ENXIO) { | |
c63ca0c0 DA |
543 | if (verbose) |
544 | ui__warning("%s event is not supported by the kernel.\n", | |
7289f83c | 545 | perf_evsel__name(counter)); |
2cee77c4 | 546 | counter->supported = false; |
cb5ef600 KL |
547 | |
548 | if ((counter->leader != counter) || | |
549 | !(counter->leader->nr_members > 1)) | |
550 | continue; | |
c63ca0c0 | 551 | } |
ede70290 | 552 | |
56e52e85 ACM |
553 | perf_evsel__open_strerror(counter, &target, |
554 | errno, msg, sizeof(msg)); | |
555 | ui__error("%s\n", msg); | |
556 | ||
48290609 ACM |
557 | if (child_pid != -1) |
558 | kill(child_pid, SIGTERM); | |
fceda7fe | 559 | |
48290609 ACM |
560 | return -1; |
561 | } | |
2cee77c4 | 562 | counter->supported = true; |
410136f5 SE |
563 | |
564 | l = strlen(counter->unit); | |
565 | if (l > unit_width) | |
566 | unit_width = l; | |
084ab9f8 | 567 | } |
42202dd5 | 568 | |
23d4aad4 ACM |
569 | if (perf_evlist__apply_filters(evsel_list, &counter)) { |
570 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
571 | counter->filter, perf_evsel__name(counter), errno, | |
759e612b | 572 | strerror_r(errno, msg, sizeof(msg))); |
cfd748ae FW |
573 | return -1; |
574 | } | |
575 | ||
42202dd5 IM |
576 | /* |
577 | * Enable counters and exec the command: | |
578 | */ | |
579 | t0 = rdclock(); | |
13370a9b | 580 | clock_gettime(CLOCK_MONOTONIC, &ref_time); |
42202dd5 | 581 | |
60666c63 | 582 | if (forks) { |
acf28922 | 583 | perf_evlist__start_workload(evsel_list); |
41191688 | 584 | handle_initial_delay(); |
acf28922 | 585 | |
13370a9b SE |
586 | if (interval) { |
587 | while (!waitpid(child_pid, &status, WNOHANG)) { | |
588 | nanosleep(&ts, NULL); | |
589 | print_interval(); | |
590 | } | |
591 | } | |
60666c63 | 592 | wait(&status); |
6af206fd | 593 | |
f33cbe72 ACM |
594 | if (workload_exec_errno) { |
595 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); | |
596 | pr_err("Workload failed: %s\n", emsg); | |
6af206fd | 597 | return -1; |
f33cbe72 | 598 | } |
6af206fd | 599 | |
33e49ea7 AK |
600 | if (WIFSIGNALED(status)) |
601 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 602 | } else { |
41191688 | 603 | handle_initial_delay(); |
13370a9b SE |
604 | while (!done) { |
605 | nanosleep(&ts, NULL); | |
606 | if (interval) | |
607 | print_interval(); | |
608 | } | |
60666c63 | 609 | } |
42202dd5 | 610 | |
42202dd5 IM |
611 | t1 = rdclock(); |
612 | ||
9e9772c4 | 613 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 614 | |
86ee6e18 | 615 | if (aggr_mode == AGGR_GLOBAL) { |
0050f7aa | 616 | evlist__for_each(evsel_list, counter) { |
f5b4a9c3 | 617 | read_counter_aggr(counter); |
7ae92e74 | 618 | perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), |
b3a319d5 | 619 | thread_map__nr(evsel_list->threads)); |
c52b12ed | 620 | } |
86ee6e18 | 621 | } else { |
0050f7aa | 622 | evlist__for_each(evsel_list, counter) { |
86ee6e18 SE |
623 | read_counter(counter); |
624 | perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1); | |
625 | } | |
f5b4a9c3 | 626 | } |
c52b12ed | 627 | |
42202dd5 IM |
628 | return WEXITSTATUS(status); |
629 | } | |
630 | ||
41cde476 | 631 | static int run_perf_stat(int argc, const char **argv) |
1f16c575 PZ |
632 | { |
633 | int ret; | |
634 | ||
635 | if (pre_cmd) { | |
636 | ret = system(pre_cmd); | |
637 | if (ret) | |
638 | return ret; | |
639 | } | |
640 | ||
641 | if (sync_run) | |
642 | sync(); | |
643 | ||
644 | ret = __run_perf_stat(argc, argv); | |
645 | if (ret) | |
646 | return ret; | |
647 | ||
648 | if (post_cmd) { | |
649 | ret = system(post_cmd); | |
650 | if (ret) | |
651 | return ret; | |
652 | } | |
653 | ||
654 | return ret; | |
655 | } | |
656 | ||
d73515c0 AK |
657 | static void print_running(u64 run, u64 ena) |
658 | { | |
659 | if (csv_output) { | |
660 | fprintf(output, "%s%" PRIu64 "%s%.2f", | |
661 | csv_sep, | |
662 | run, | |
663 | csv_sep, | |
664 | ena ? 100.0 * run / ena : 100.0); | |
665 | } else if (run != ena) { | |
666 | fprintf(output, " (%.2f%%)", 100.0 * run / ena); | |
667 | } | |
668 | } | |
669 | ||
f99844cb IM |
670 | static void print_noise_pct(double total, double avg) |
671 | { | |
0007ecea | 672 | double pct = rel_stddev_stats(total, avg); |
f99844cb | 673 | |
3ae9a34d | 674 | if (csv_output) |
4aa9015f | 675 | fprintf(output, "%s%.2f%%", csv_sep, pct); |
a1bca6cc | 676 | else if (pct) |
4aa9015f | 677 | fprintf(output, " ( +-%6.2f%% )", pct); |
f99844cb IM |
678 | } |
679 | ||
69aad6f1 | 680 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 681 | { |
69aad6f1 ACM |
682 | struct perf_stat *ps; |
683 | ||
849abde9 PZ |
684 | if (run_count == 1) |
685 | return; | |
686 | ||
69aad6f1 | 687 | ps = evsel->priv; |
f99844cb | 688 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
689 | } |
690 | ||
12c08a9f | 691 | static void aggr_printout(struct perf_evsel *evsel, int id, int nr) |
44175b6f | 692 | { |
86ee6e18 | 693 | switch (aggr_mode) { |
12c08a9f SE |
694 | case AGGR_CORE: |
695 | fprintf(output, "S%d-C%*d%s%*d%s", | |
696 | cpu_map__id_to_socket(id), | |
697 | csv_output ? 0 : -8, | |
698 | cpu_map__id_to_cpu(id), | |
699 | csv_sep, | |
700 | csv_output ? 0 : 4, | |
701 | nr, | |
702 | csv_sep); | |
703 | break; | |
86ee6e18 SE |
704 | case AGGR_SOCKET: |
705 | fprintf(output, "S%*d%s%*d%s", | |
d7e7a451 | 706 | csv_output ? 0 : -5, |
12c08a9f | 707 | id, |
d7e7a451 SE |
708 | csv_sep, |
709 | csv_output ? 0 : 4, | |
710 | nr, | |
711 | csv_sep); | |
86ee6e18 SE |
712 | break; |
713 | case AGGR_NONE: | |
714 | fprintf(output, "CPU%*d%s", | |
d7470b6a | 715 | csv_output ? 0 : -4, |
12c08a9f | 716 | perf_evsel__cpus(evsel)->map[id], csv_sep); |
86ee6e18 SE |
717 | break; |
718 | case AGGR_GLOBAL: | |
719 | default: | |
720 | break; | |
721 | } | |
722 | } | |
723 | ||
da88c7f7 | 724 | static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg) |
86ee6e18 SE |
725 | { |
726 | double msecs = avg / 1e6; | |
410136f5 | 727 | const char *fmt_v, *fmt_n; |
4bbe5a61 | 728 | char name[25]; |
86ee6e18 | 729 | |
410136f5 SE |
730 | fmt_v = csv_output ? "%.6f%s" : "%18.6f%s"; |
731 | fmt_n = csv_output ? "%s" : "%-25s"; | |
732 | ||
da88c7f7 | 733 | aggr_printout(evsel, id, nr); |
d7470b6a | 734 | |
4bbe5a61 DA |
735 | scnprintf(name, sizeof(name), "%s%s", |
736 | perf_evsel__name(evsel), csv_output ? "" : " (msec)"); | |
410136f5 SE |
737 | |
738 | fprintf(output, fmt_v, msecs, csv_sep); | |
739 | ||
740 | if (csv_output) | |
741 | fprintf(output, "%s%s", evsel->unit, csv_sep); | |
742 | else | |
743 | fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep); | |
744 | ||
745 | fprintf(output, fmt_n, name); | |
d7470b6a | 746 | |
023695d9 | 747 | if (evsel->cgrp) |
4aa9015f | 748 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 749 | |
13370a9b | 750 | if (csv_output || interval) |
d7470b6a | 751 | return; |
44175b6f | 752 | |
daec78a0 | 753 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
4aa9015f SE |
754 | fprintf(output, " # %8.3f CPUs utilized ", |
755 | avg / avg_stats(&walltime_nsecs_stats)); | |
9dac6a29 NK |
756 | else |
757 | fprintf(output, " "); | |
44175b6f IM |
758 | } |
759 | ||
556b1fb7 JO |
760 | static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg) |
761 | { | |
762 | double sc = evsel->scale; | |
763 | const char *fmt; | |
764 | int cpu = cpu_map__id_to_cpu(id); | |
765 | ||
766 | if (csv_output) { | |
767 | fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s"; | |
768 | } else { | |
769 | if (big_num) | |
770 | fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s"; | |
771 | else | |
772 | fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s"; | |
773 | } | |
774 | ||
775 | aggr_printout(evsel, id, nr); | |
776 | ||
777 | if (aggr_mode == AGGR_GLOBAL) | |
778 | cpu = 0; | |
779 | ||
780 | fprintf(output, fmt, avg, csv_sep); | |
781 | ||
782 | if (evsel->unit) | |
783 | fprintf(output, "%-*s%s", | |
784 | csv_output ? 0 : unit_width, | |
785 | evsel->unit, csv_sep); | |
786 | ||
787 | fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel)); | |
788 | ||
789 | if (evsel->cgrp) | |
790 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); | |
791 | ||
792 | if (csv_output || interval) | |
793 | return; | |
794 | ||
f87027b9 | 795 | perf_stat__print_shadow_stats(output, evsel, avg, cpu, aggr_mode); |
556b1fb7 JO |
796 | } |
797 | ||
86ee6e18 | 798 | static void print_aggr(char *prefix) |
d7e7a451 SE |
799 | { |
800 | struct perf_evsel *counter; | |
582ec082 | 801 | int cpu, cpu2, s, s2, id, nr; |
410136f5 | 802 | double uval; |
d7e7a451 | 803 | u64 ena, run, val; |
d7e7a451 | 804 | |
86ee6e18 | 805 | if (!(aggr_map || aggr_get_id)) |
d7e7a451 SE |
806 | return; |
807 | ||
86ee6e18 SE |
808 | for (s = 0; s < aggr_map->nr; s++) { |
809 | id = aggr_map->map[s]; | |
0050f7aa | 810 | evlist__for_each(evsel_list, counter) { |
d7e7a451 SE |
811 | val = ena = run = 0; |
812 | nr = 0; | |
813 | for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) { | |
582ec082 SE |
814 | cpu2 = perf_evsel__cpus(counter)->map[cpu]; |
815 | s2 = aggr_get_id(evsel_list->cpus, cpu2); | |
86ee6e18 | 816 | if (s2 != id) |
d7e7a451 SE |
817 | continue; |
818 | val += counter->counts->cpu[cpu].val; | |
819 | ena += counter->counts->cpu[cpu].ena; | |
820 | run += counter->counts->cpu[cpu].run; | |
821 | nr++; | |
822 | } | |
823 | if (prefix) | |
824 | fprintf(output, "%s", prefix); | |
825 | ||
826 | if (run == 0 || ena == 0) { | |
582ec082 | 827 | aggr_printout(counter, id, nr); |
86ee6e18 | 828 | |
410136f5 | 829 | fprintf(output, "%*s%s", |
d7e7a451 SE |
830 | csv_output ? 0 : 18, |
831 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, | |
410136f5 SE |
832 | csv_sep); |
833 | ||
834 | fprintf(output, "%-*s%s", | |
835 | csv_output ? 0 : unit_width, | |
836 | counter->unit, csv_sep); | |
837 | ||
838 | fprintf(output, "%*s", | |
839 | csv_output ? 0 : -25, | |
d7e7a451 | 840 | perf_evsel__name(counter)); |
86ee6e18 | 841 | |
d7e7a451 SE |
842 | if (counter->cgrp) |
843 | fprintf(output, "%s%s", | |
844 | csv_sep, counter->cgrp->name); | |
845 | ||
d73515c0 | 846 | print_running(run, ena); |
d7e7a451 SE |
847 | fputc('\n', output); |
848 | continue; | |
849 | } | |
410136f5 | 850 | uval = val * counter->scale; |
d7e7a451 SE |
851 | |
852 | if (nsec_counter(counter)) | |
410136f5 | 853 | nsec_printout(id, nr, counter, uval); |
d7e7a451 | 854 | else |
410136f5 | 855 | abs_printout(id, nr, counter, uval); |
d7e7a451 | 856 | |
d73515c0 | 857 | if (!csv_output) |
d7e7a451 SE |
858 | print_noise(counter, 1.0); |
859 | ||
d73515c0 | 860 | print_running(run, ena); |
d7e7a451 SE |
861 | fputc('\n', output); |
862 | } | |
863 | } | |
864 | } | |
865 | ||
2996f5dd IM |
866 | /* |
867 | * Print out the results of a single counter: | |
f5b4a9c3 | 868 | * aggregated counts in system-wide mode |
2996f5dd | 869 | */ |
13370a9b | 870 | static void print_counter_aggr(struct perf_evsel *counter, char *prefix) |
2996f5dd | 871 | { |
69aad6f1 ACM |
872 | struct perf_stat *ps = counter->priv; |
873 | double avg = avg_stats(&ps->res_stats[0]); | |
c52b12ed | 874 | int scaled = counter->counts->scaled; |
410136f5 | 875 | double uval; |
d73515c0 AK |
876 | double avg_enabled, avg_running; |
877 | ||
878 | avg_enabled = avg_stats(&ps->res_stats[1]); | |
879 | avg_running = avg_stats(&ps->res_stats[2]); | |
2996f5dd | 880 | |
13370a9b SE |
881 | if (prefix) |
882 | fprintf(output, "%s", prefix); | |
883 | ||
3b4331d9 | 884 | if (scaled == -1 || !counter->supported) { |
410136f5 | 885 | fprintf(output, "%*s%s", |
d7470b6a | 886 | csv_output ? 0 : 18, |
2cee77c4 | 887 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
410136f5 SE |
888 | csv_sep); |
889 | fprintf(output, "%-*s%s", | |
890 | csv_output ? 0 : unit_width, | |
891 | counter->unit, csv_sep); | |
892 | fprintf(output, "%*s", | |
893 | csv_output ? 0 : -25, | |
7289f83c | 894 | perf_evsel__name(counter)); |
023695d9 SE |
895 | |
896 | if (counter->cgrp) | |
4aa9015f | 897 | fprintf(output, "%s%s", csv_sep, counter->cgrp->name); |
023695d9 | 898 | |
d73515c0 | 899 | print_running(avg_running, avg_enabled); |
4aa9015f | 900 | fputc('\n', output); |
2996f5dd IM |
901 | return; |
902 | } | |
c04f5e5d | 903 | |
410136f5 SE |
904 | uval = avg * counter->scale; |
905 | ||
44175b6f | 906 | if (nsec_counter(counter)) |
410136f5 | 907 | nsec_printout(-1, 0, counter, uval); |
44175b6f | 908 | else |
410136f5 | 909 | abs_printout(-1, 0, counter, uval); |
849abde9 | 910 | |
3ae9a34d ZH |
911 | print_noise(counter, avg); |
912 | ||
d73515c0 | 913 | print_running(avg_running, avg_enabled); |
4aa9015f | 914 | fprintf(output, "\n"); |
c04f5e5d IM |
915 | } |
916 | ||
f5b4a9c3 SE |
917 | /* |
918 | * Print out the results of a single counter: | |
919 | * does not use aggregated count in system-wide | |
920 | */ | |
13370a9b | 921 | static void print_counter(struct perf_evsel *counter, char *prefix) |
f5b4a9c3 SE |
922 | { |
923 | u64 ena, run, val; | |
410136f5 | 924 | double uval; |
f5b4a9c3 SE |
925 | int cpu; |
926 | ||
7ae92e74 | 927 | for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) { |
c52b12ed ACM |
928 | val = counter->counts->cpu[cpu].val; |
929 | ena = counter->counts->cpu[cpu].ena; | |
930 | run = counter->counts->cpu[cpu].run; | |
13370a9b SE |
931 | |
932 | if (prefix) | |
933 | fprintf(output, "%s", prefix); | |
934 | ||
f5b4a9c3 | 935 | if (run == 0 || ena == 0) { |
410136f5 | 936 | fprintf(output, "CPU%*d%s%*s%s", |
d7470b6a | 937 | csv_output ? 0 : -4, |
7ae92e74 | 938 | perf_evsel__cpus(counter)->map[cpu], csv_sep, |
d7470b6a | 939 | csv_output ? 0 : 18, |
2cee77c4 | 940 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
410136f5 SE |
941 | csv_sep); |
942 | ||
943 | fprintf(output, "%-*s%s", | |
944 | csv_output ? 0 : unit_width, | |
945 | counter->unit, csv_sep); | |
946 | ||
947 | fprintf(output, "%*s", | |
948 | csv_output ? 0 : -25, | |
949 | perf_evsel__name(counter)); | |
f5b4a9c3 | 950 | |
023695d9 | 951 | if (counter->cgrp) |
4aa9015f SE |
952 | fprintf(output, "%s%s", |
953 | csv_sep, counter->cgrp->name); | |
023695d9 | 954 | |
d73515c0 | 955 | print_running(run, ena); |
4aa9015f | 956 | fputc('\n', output); |
f5b4a9c3 SE |
957 | continue; |
958 | } | |
959 | ||
410136f5 SE |
960 | uval = val * counter->scale; |
961 | ||
f5b4a9c3 | 962 | if (nsec_counter(counter)) |
410136f5 | 963 | nsec_printout(cpu, 0, counter, uval); |
f5b4a9c3 | 964 | else |
410136f5 | 965 | abs_printout(cpu, 0, counter, uval); |
f5b4a9c3 | 966 | |
d73515c0 | 967 | if (!csv_output) |
d7470b6a | 968 | print_noise(counter, 1.0); |
d73515c0 | 969 | print_running(run, ena); |
f5b4a9c3 | 970 | |
4aa9015f | 971 | fputc('\n', output); |
f5b4a9c3 SE |
972 | } |
973 | } | |
974 | ||
42202dd5 IM |
975 | static void print_stat(int argc, const char **argv) |
976 | { | |
69aad6f1 ACM |
977 | struct perf_evsel *counter; |
978 | int i; | |
42202dd5 | 979 | |
ddcacfa0 IM |
980 | fflush(stdout); |
981 | ||
d7470b6a | 982 | if (!csv_output) { |
4aa9015f SE |
983 | fprintf(output, "\n"); |
984 | fprintf(output, " Performance counter stats for "); | |
62d3b617 DA |
985 | if (target.system_wide) |
986 | fprintf(output, "\'system wide"); | |
987 | else if (target.cpu_list) | |
988 | fprintf(output, "\'CPU(s) %s", target.cpu_list); | |
602ad878 | 989 | else if (!target__has_task(&target)) { |
4aa9015f | 990 | fprintf(output, "\'%s", argv[0]); |
d7470b6a | 991 | for (i = 1; i < argc; i++) |
4aa9015f | 992 | fprintf(output, " %s", argv[i]); |
20f946b4 NK |
993 | } else if (target.pid) |
994 | fprintf(output, "process id \'%s", target.pid); | |
d7470b6a | 995 | else |
20f946b4 | 996 | fprintf(output, "thread id \'%s", target.tid); |
44db76c8 | 997 | |
4aa9015f | 998 | fprintf(output, "\'"); |
d7470b6a | 999 | if (run_count > 1) |
4aa9015f SE |
1000 | fprintf(output, " (%d runs)", run_count); |
1001 | fprintf(output, ":\n\n"); | |
d7470b6a | 1002 | } |
2996f5dd | 1003 | |
86ee6e18 | 1004 | switch (aggr_mode) { |
12c08a9f | 1005 | case AGGR_CORE: |
86ee6e18 SE |
1006 | case AGGR_SOCKET: |
1007 | print_aggr(NULL); | |
1008 | break; | |
1009 | case AGGR_GLOBAL: | |
0050f7aa | 1010 | evlist__for_each(evsel_list, counter) |
13370a9b | 1011 | print_counter_aggr(counter, NULL); |
86ee6e18 SE |
1012 | break; |
1013 | case AGGR_NONE: | |
0050f7aa | 1014 | evlist__for_each(evsel_list, counter) |
86ee6e18 SE |
1015 | print_counter(counter, NULL); |
1016 | break; | |
1017 | default: | |
1018 | break; | |
f5b4a9c3 | 1019 | } |
ddcacfa0 | 1020 | |
d7470b6a | 1021 | if (!csv_output) { |
c3305257 | 1022 | if (!null_run) |
4aa9015f SE |
1023 | fprintf(output, "\n"); |
1024 | fprintf(output, " %17.9f seconds time elapsed", | |
d7470b6a SE |
1025 | avg_stats(&walltime_nsecs_stats)/1e9); |
1026 | if (run_count > 1) { | |
4aa9015f | 1027 | fprintf(output, " "); |
f99844cb IM |
1028 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), |
1029 | avg_stats(&walltime_nsecs_stats)); | |
d7470b6a | 1030 | } |
4aa9015f | 1031 | fprintf(output, "\n\n"); |
566747e6 | 1032 | } |
ddcacfa0 IM |
1033 | } |
1034 | ||
f7b7c26e PZ |
1035 | static volatile int signr = -1; |
1036 | ||
5242519b | 1037 | static void skip_signal(int signo) |
ddcacfa0 | 1038 | { |
13370a9b | 1039 | if ((child_pid == -1) || interval) |
60666c63 LW |
1040 | done = 1; |
1041 | ||
f7b7c26e | 1042 | signr = signo; |
d07f0b12 SE |
1043 | /* |
1044 | * render child_pid harmless | |
1045 | * won't send SIGTERM to a random | |
1046 | * process in case of race condition | |
1047 | * and fast PID recycling | |
1048 | */ | |
1049 | child_pid = -1; | |
f7b7c26e PZ |
1050 | } |
1051 | ||
1052 | static void sig_atexit(void) | |
1053 | { | |
d07f0b12 SE |
1054 | sigset_t set, oset; |
1055 | ||
1056 | /* | |
1057 | * avoid race condition with SIGCHLD handler | |
1058 | * in skip_signal() which is modifying child_pid | |
1059 | * goal is to avoid send SIGTERM to a random | |
1060 | * process | |
1061 | */ | |
1062 | sigemptyset(&set); | |
1063 | sigaddset(&set, SIGCHLD); | |
1064 | sigprocmask(SIG_BLOCK, &set, &oset); | |
1065 | ||
933da83a CW |
1066 | if (child_pid != -1) |
1067 | kill(child_pid, SIGTERM); | |
1068 | ||
d07f0b12 SE |
1069 | sigprocmask(SIG_SETMASK, &oset, NULL); |
1070 | ||
f7b7c26e PZ |
1071 | if (signr == -1) |
1072 | return; | |
1073 | ||
1074 | signal(signr, SIG_DFL); | |
1075 | kill(getpid(), signr); | |
5242519b IM |
1076 | } |
1077 | ||
1d037ca1 IT |
1078 | static int stat__set_big_num(const struct option *opt __maybe_unused, |
1079 | const char *s __maybe_unused, int unset) | |
d7470b6a SE |
1080 | { |
1081 | big_num_opt = unset ? 0 : 1; | |
1082 | return 0; | |
1083 | } | |
1084 | ||
86ee6e18 SE |
1085 | static int perf_stat_init_aggr_mode(void) |
1086 | { | |
1087 | switch (aggr_mode) { | |
1088 | case AGGR_SOCKET: | |
1089 | if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) { | |
1090 | perror("cannot build socket map"); | |
1091 | return -1; | |
1092 | } | |
1093 | aggr_get_id = cpu_map__get_socket; | |
1094 | break; | |
12c08a9f SE |
1095 | case AGGR_CORE: |
1096 | if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) { | |
1097 | perror("cannot build core map"); | |
1098 | return -1; | |
1099 | } | |
1100 | aggr_get_id = cpu_map__get_core; | |
1101 | break; | |
86ee6e18 SE |
1102 | case AGGR_NONE: |
1103 | case AGGR_GLOBAL: | |
1104 | default: | |
1105 | break; | |
1106 | } | |
1107 | return 0; | |
1108 | } | |
1109 | ||
2cba3ffb IM |
1110 | /* |
1111 | * Add default attributes, if there were no attributes specified or | |
1112 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1113 | */ | |
1114 | static int add_default_attributes(void) | |
1115 | { | |
b070a547 ACM |
1116 | struct perf_event_attr default_attrs[] = { |
1117 | ||
1118 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, | |
1119 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, | |
1120 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, | |
1121 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, | |
1122 | ||
1123 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, | |
1124 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, | |
1125 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, | |
1126 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, | |
1127 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, | |
1128 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, | |
1129 | ||
1130 | }; | |
1131 | ||
1132 | /* | |
1133 | * Detailed stats (-d), covering the L1 and last level data caches: | |
1134 | */ | |
1135 | struct perf_event_attr detailed_attrs[] = { | |
1136 | ||
1137 | { .type = PERF_TYPE_HW_CACHE, | |
1138 | .config = | |
1139 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1140 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1141 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1142 | ||
1143 | { .type = PERF_TYPE_HW_CACHE, | |
1144 | .config = | |
1145 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1146 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1147 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1148 | ||
1149 | { .type = PERF_TYPE_HW_CACHE, | |
1150 | .config = | |
1151 | PERF_COUNT_HW_CACHE_LL << 0 | | |
1152 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1153 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1154 | ||
1155 | { .type = PERF_TYPE_HW_CACHE, | |
1156 | .config = | |
1157 | PERF_COUNT_HW_CACHE_LL << 0 | | |
1158 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1159 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1160 | }; | |
1161 | ||
1162 | /* | |
1163 | * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: | |
1164 | */ | |
1165 | struct perf_event_attr very_detailed_attrs[] = { | |
1166 | ||
1167 | { .type = PERF_TYPE_HW_CACHE, | |
1168 | .config = | |
1169 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
1170 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1171 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1172 | ||
1173 | { .type = PERF_TYPE_HW_CACHE, | |
1174 | .config = | |
1175 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
1176 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1177 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1178 | ||
1179 | { .type = PERF_TYPE_HW_CACHE, | |
1180 | .config = | |
1181 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
1182 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1183 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1184 | ||
1185 | { .type = PERF_TYPE_HW_CACHE, | |
1186 | .config = | |
1187 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
1188 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1189 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1190 | ||
1191 | { .type = PERF_TYPE_HW_CACHE, | |
1192 | .config = | |
1193 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
1194 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1195 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1196 | ||
1197 | { .type = PERF_TYPE_HW_CACHE, | |
1198 | .config = | |
1199 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
1200 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1201 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1202 | ||
1203 | }; | |
1204 | ||
1205 | /* | |
1206 | * Very, very detailed stats (-d -d -d), adding prefetch events: | |
1207 | */ | |
1208 | struct perf_event_attr very_very_detailed_attrs[] = { | |
1209 | ||
1210 | { .type = PERF_TYPE_HW_CACHE, | |
1211 | .config = | |
1212 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1213 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
1214 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1215 | ||
1216 | { .type = PERF_TYPE_HW_CACHE, | |
1217 | .config = | |
1218 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1219 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
1220 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1221 | }; | |
1222 | ||
2cba3ffb IM |
1223 | /* Set attrs if no event is selected and !null_run: */ |
1224 | if (null_run) | |
1225 | return 0; | |
1226 | ||
4cabc3d1 AK |
1227 | if (transaction_run) { |
1228 | int err; | |
1229 | if (pmu_have_event("cpu", "cycles-ct") && | |
1230 | pmu_have_event("cpu", "el-start")) | |
a454742c | 1231 | err = parse_events(evsel_list, transaction_attrs, NULL); |
4cabc3d1 | 1232 | else |
a454742c JO |
1233 | err = parse_events(evsel_list, transaction_limited_attrs, NULL); |
1234 | if (err) { | |
4cabc3d1 AK |
1235 | fprintf(stderr, "Cannot set up transaction events\n"); |
1236 | return -1; | |
1237 | } | |
1238 | return 0; | |
1239 | } | |
1240 | ||
2cba3ffb | 1241 | if (!evsel_list->nr_entries) { |
79695e1b | 1242 | if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0) |
50d08e47 | 1243 | return -1; |
2cba3ffb IM |
1244 | } |
1245 | ||
1246 | /* Detailed events get appended to the event list: */ | |
1247 | ||
1248 | if (detailed_run < 1) | |
1249 | return 0; | |
1250 | ||
1251 | /* Append detailed run extra attributes: */ | |
79695e1b | 1252 | if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
50d08e47 | 1253 | return -1; |
2cba3ffb IM |
1254 | |
1255 | if (detailed_run < 2) | |
1256 | return 0; | |
1257 | ||
1258 | /* Append very detailed run extra attributes: */ | |
79695e1b | 1259 | if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
50d08e47 | 1260 | return -1; |
2cba3ffb IM |
1261 | |
1262 | if (detailed_run < 3) | |
1263 | return 0; | |
1264 | ||
1265 | /* Append very, very detailed run extra attributes: */ | |
79695e1b | 1266 | return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
2cba3ffb IM |
1267 | } |
1268 | ||
1d037ca1 | 1269 | int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) |
5242519b | 1270 | { |
1f16c575 | 1271 | bool append_file = false; |
b070a547 ACM |
1272 | int output_fd = 0; |
1273 | const char *output_name = NULL; | |
1274 | const struct option options[] = { | |
4cabc3d1 AK |
1275 | OPT_BOOLEAN('T', "transaction", &transaction_run, |
1276 | "hardware transaction statistics"), | |
b070a547 ACM |
1277 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
1278 | "event selector. use 'perf list' to list available events", | |
1279 | parse_events_option), | |
1280 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", | |
1281 | "event filter", parse_filter), | |
1282 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, | |
1283 | "child tasks do not inherit counters"), | |
1284 | OPT_STRING('p', "pid", &target.pid, "pid", | |
1285 | "stat events on existing process id"), | |
1286 | OPT_STRING('t', "tid", &target.tid, "tid", | |
1287 | "stat events on existing thread id"), | |
1288 | OPT_BOOLEAN('a', "all-cpus", &target.system_wide, | |
1289 | "system-wide collection from all CPUs"), | |
1290 | OPT_BOOLEAN('g', "group", &group, | |
1291 | "put the counters into a counter group"), | |
1292 | OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"), | |
1293 | OPT_INCR('v', "verbose", &verbose, | |
1294 | "be more verbose (show counter open errors, etc)"), | |
1295 | OPT_INTEGER('r', "repeat", &run_count, | |
a7e191c3 | 1296 | "repeat command and print average + stddev (max: 100, forever: 0)"), |
b070a547 ACM |
1297 | OPT_BOOLEAN('n', "null", &null_run, |
1298 | "null run - dont start any counters"), | |
1299 | OPT_INCR('d', "detailed", &detailed_run, | |
1300 | "detailed run - start a lot of events"), | |
1301 | OPT_BOOLEAN('S', "sync", &sync_run, | |
1302 | "call sync() before starting a run"), | |
48000a1a | 1303 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
b070a547 ACM |
1304 | "print large numbers with thousands\' separators", |
1305 | stat__set_big_num), | |
1306 | OPT_STRING('C', "cpu", &target.cpu_list, "cpu", | |
1307 | "list of cpus to monitor in system-wide"), | |
86ee6e18 SE |
1308 | OPT_SET_UINT('A', "no-aggr", &aggr_mode, |
1309 | "disable CPU count aggregation", AGGR_NONE), | |
b070a547 ACM |
1310 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
1311 | "print counts with custom separator"), | |
1312 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", | |
1313 | "monitor event in cgroup name only", parse_cgroups), | |
1314 | OPT_STRING('o', "output", &output_name, "file", "output file name"), | |
1315 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
1316 | OPT_INTEGER(0, "log-fd", &output_fd, | |
1317 | "log output to fd, instead of stderr"), | |
1f16c575 PZ |
1318 | OPT_STRING(0, "pre", &pre_cmd, "command", |
1319 | "command to run prior to the measured command"), | |
1320 | OPT_STRING(0, "post", &post_cmd, "command", | |
1321 | "command to run after to the measured command"), | |
13370a9b SE |
1322 | OPT_UINTEGER('I', "interval-print", &interval, |
1323 | "print counts at regular interval in ms (>= 100)"), | |
d4304958 | 1324 | OPT_SET_UINT(0, "per-socket", &aggr_mode, |
86ee6e18 | 1325 | "aggregate counts per processor socket", AGGR_SOCKET), |
12c08a9f SE |
1326 | OPT_SET_UINT(0, "per-core", &aggr_mode, |
1327 | "aggregate counts per physical processor core", AGGR_CORE), | |
41191688 AK |
1328 | OPT_UINTEGER('D', "delay", &initial_delay, |
1329 | "ms to wait before starting measurement after program start"), | |
b070a547 ACM |
1330 | OPT_END() |
1331 | }; | |
1332 | const char * const stat_usage[] = { | |
1333 | "perf stat [<options>] [<command>]", | |
1334 | NULL | |
1335 | }; | |
cc03c542 | 1336 | int status = -EINVAL, run_idx; |
4aa9015f | 1337 | const char *mode; |
42202dd5 | 1338 | |
5af52b51 SE |
1339 | setlocale(LC_ALL, ""); |
1340 | ||
334fe7a3 | 1341 | evsel_list = perf_evlist__new(); |
361c99a6 ACM |
1342 | if (evsel_list == NULL) |
1343 | return -ENOMEM; | |
1344 | ||
a0541234 AB |
1345 | argc = parse_options(argc, argv, options, stat_usage, |
1346 | PARSE_OPT_STOP_AT_NON_OPTION); | |
d7470b6a | 1347 | |
4aa9015f SE |
1348 | output = stderr; |
1349 | if (output_name && strcmp(output_name, "-")) | |
1350 | output = NULL; | |
1351 | ||
56f3bae7 JC |
1352 | if (output_name && output_fd) { |
1353 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
cc03c542 NK |
1354 | parse_options_usage(stat_usage, options, "o", 1); |
1355 | parse_options_usage(NULL, options, "log-fd", 0); | |
1356 | goto out; | |
56f3bae7 | 1357 | } |
fc3e4d07 SE |
1358 | |
1359 | if (output_fd < 0) { | |
1360 | fprintf(stderr, "argument to --log-fd must be a > 0\n"); | |
cc03c542 NK |
1361 | parse_options_usage(stat_usage, options, "log-fd", 0); |
1362 | goto out; | |
fc3e4d07 SE |
1363 | } |
1364 | ||
4aa9015f SE |
1365 | if (!output) { |
1366 | struct timespec tm; | |
1367 | mode = append_file ? "a" : "w"; | |
1368 | ||
1369 | output = fopen(output_name, mode); | |
1370 | if (!output) { | |
1371 | perror("failed to create output file"); | |
fceda7fe | 1372 | return -1; |
4aa9015f SE |
1373 | } |
1374 | clock_gettime(CLOCK_REALTIME, &tm); | |
1375 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
fc3e4d07 | 1376 | } else if (output_fd > 0) { |
56f3bae7 JC |
1377 | mode = append_file ? "a" : "w"; |
1378 | output = fdopen(output_fd, mode); | |
1379 | if (!output) { | |
1380 | perror("Failed opening logfd"); | |
1381 | return -errno; | |
1382 | } | |
4aa9015f SE |
1383 | } |
1384 | ||
d4ffd04d | 1385 | if (csv_sep) { |
d7470b6a | 1386 | csv_output = true; |
d4ffd04d JC |
1387 | if (!strcmp(csv_sep, "\\t")) |
1388 | csv_sep = "\t"; | |
1389 | } else | |
d7470b6a SE |
1390 | csv_sep = DEFAULT_SEPARATOR; |
1391 | ||
1392 | /* | |
1393 | * let the spreadsheet do the pretty-printing | |
1394 | */ | |
1395 | if (csv_output) { | |
61a9f324 | 1396 | /* User explicitly passed -B? */ |
d7470b6a SE |
1397 | if (big_num_opt == 1) { |
1398 | fprintf(stderr, "-B option not supported with -x\n"); | |
cc03c542 NK |
1399 | parse_options_usage(stat_usage, options, "B", 1); |
1400 | parse_options_usage(NULL, options, "x", 1); | |
1401 | goto out; | |
d7470b6a SE |
1402 | } else /* Nope, so disable big number formatting */ |
1403 | big_num = false; | |
1404 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1405 | big_num = false; | |
1406 | ||
602ad878 | 1407 | if (!argc && target__none(&target)) |
5242519b | 1408 | usage_with_options(stat_usage, options); |
ac3063bd | 1409 | |
a7e191c3 | 1410 | if (run_count < 0) { |
cc03c542 NK |
1411 | pr_err("Run count must be a positive number\n"); |
1412 | parse_options_usage(stat_usage, options, "r", 1); | |
1413 | goto out; | |
a7e191c3 FD |
1414 | } else if (run_count == 0) { |
1415 | forever = true; | |
1416 | run_count = 1; | |
1417 | } | |
ddcacfa0 | 1418 | |
023695d9 | 1419 | /* no_aggr, cgroup are for system-wide only */ |
602ad878 ACM |
1420 | if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) && |
1421 | !target__has_cpu(&target)) { | |
023695d9 SE |
1422 | fprintf(stderr, "both cgroup and no-aggregation " |
1423 | "modes only available in system-wide mode\n"); | |
1424 | ||
cc03c542 NK |
1425 | parse_options_usage(stat_usage, options, "G", 1); |
1426 | parse_options_usage(NULL, options, "A", 1); | |
1427 | parse_options_usage(NULL, options, "a", 1); | |
1428 | goto out; | |
d7e7a451 SE |
1429 | } |
1430 | ||
2cba3ffb IM |
1431 | if (add_default_attributes()) |
1432 | goto out; | |
ddcacfa0 | 1433 | |
602ad878 | 1434 | target__validate(&target); |
5c98d466 | 1435 | |
77a6f014 | 1436 | if (perf_evlist__create_maps(evsel_list, &target) < 0) { |
602ad878 | 1437 | if (target__has_task(&target)) { |
77a6f014 | 1438 | pr_err("Problems finding threads of monitor\n"); |
cc03c542 NK |
1439 | parse_options_usage(stat_usage, options, "p", 1); |
1440 | parse_options_usage(NULL, options, "t", 1); | |
602ad878 | 1441 | } else if (target__has_cpu(&target)) { |
77a6f014 | 1442 | perror("failed to parse CPUs map"); |
cc03c542 NK |
1443 | parse_options_usage(stat_usage, options, "C", 1); |
1444 | parse_options_usage(NULL, options, "a", 1); | |
1445 | } | |
1446 | goto out; | |
60d567e2 | 1447 | } |
13370a9b SE |
1448 | if (interval && interval < 100) { |
1449 | pr_err("print interval must be >= 100ms\n"); | |
cc03c542 | 1450 | parse_options_usage(stat_usage, options, "I", 1); |
03ad9747 | 1451 | goto out; |
13370a9b | 1452 | } |
c45c6ea2 | 1453 | |
d134ffb9 | 1454 | if (perf_evlist__alloc_stats(evsel_list, interval)) |
03ad9747 | 1455 | goto out; |
d6d901c2 | 1456 | |
86ee6e18 | 1457 | if (perf_stat_init_aggr_mode()) |
03ad9747 | 1458 | goto out; |
86ee6e18 | 1459 | |
58d7e993 IM |
1460 | /* |
1461 | * We dont want to block the signals - that would cause | |
1462 | * child tasks to inherit that and Ctrl-C would not work. | |
1463 | * What we want is for Ctrl-C to work in the exec()-ed | |
1464 | * task, but being ignored by perf stat itself: | |
1465 | */ | |
f7b7c26e | 1466 | atexit(sig_atexit); |
a7e191c3 FD |
1467 | if (!forever) |
1468 | signal(SIGINT, skip_signal); | |
13370a9b | 1469 | signal(SIGCHLD, skip_signal); |
58d7e993 IM |
1470 | signal(SIGALRM, skip_signal); |
1471 | signal(SIGABRT, skip_signal); | |
1472 | ||
42202dd5 | 1473 | status = 0; |
a7e191c3 | 1474 | for (run_idx = 0; forever || run_idx < run_count; run_idx++) { |
42202dd5 | 1475 | if (run_count != 1 && verbose) |
4aa9015f SE |
1476 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1477 | run_idx + 1); | |
f9cef0a9 | 1478 | |
42202dd5 | 1479 | status = run_perf_stat(argc, argv); |
a7e191c3 FD |
1480 | if (forever && status != -1) { |
1481 | print_stat(argc, argv); | |
d134ffb9 | 1482 | perf_stat__reset_stats(evsel_list); |
a7e191c3 | 1483 | } |
42202dd5 IM |
1484 | } |
1485 | ||
a7e191c3 | 1486 | if (!forever && status != -1 && !interval) |
084ab9f8 | 1487 | print_stat(argc, argv); |
d134ffb9 ACM |
1488 | |
1489 | perf_evlist__free_stats(evsel_list); | |
0015e2e1 ACM |
1490 | out: |
1491 | perf_evlist__delete(evsel_list); | |
42202dd5 | 1492 | return status; |
ddcacfa0 | 1493 | } |