Commit | Line | Data |
---|---|---|
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" |
4b6ab94e | 48 | #include <subcmd/parse-options.h> |
5242519b | 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" |
d809560b | 61 | #include "util/counts.h" |
4979d0c7 | 62 | #include "util/session.h" |
ba6039b6 JO |
63 | #include "util/tool.h" |
64 | #include "asm/bug.h" | |
ddcacfa0 | 65 | |
1f16c575 | 66 | #include <stdlib.h> |
ddcacfa0 | 67 | #include <sys/prctl.h> |
5af52b51 | 68 | #include <locale.h> |
16c8a109 | 69 | |
d7470b6a | 70 | #define DEFAULT_SEPARATOR " " |
2cee77c4 DA |
71 | #define CNTR_NOT_SUPPORTED "<not supported>" |
72 | #define CNTR_NOT_COUNTED "<not counted>" | |
d7470b6a | 73 | |
d4f63a47 | 74 | static void print_counters(struct timespec *ts, int argc, const char **argv); |
13370a9b | 75 | |
4cabc3d1 | 76 | /* Default events used for perf stat -T */ |
a454742c JO |
77 | static const char *transaction_attrs = { |
78 | "task-clock," | |
4cabc3d1 AK |
79 | "{" |
80 | "instructions," | |
81 | "cycles," | |
82 | "cpu/cycles-t/," | |
83 | "cpu/tx-start/," | |
84 | "cpu/el-start/," | |
85 | "cpu/cycles-ct/" | |
86 | "}" | |
87 | }; | |
88 | ||
89 | /* More limited version when the CPU does not have all events. */ | |
a454742c JO |
90 | static const char * transaction_limited_attrs = { |
91 | "task-clock," | |
4cabc3d1 AK |
92 | "{" |
93 | "instructions," | |
94 | "cycles," | |
95 | "cpu/cycles-t/," | |
96 | "cpu/tx-start/" | |
97 | "}" | |
98 | }; | |
99 | ||
666e6d48 | 100 | static struct perf_evlist *evsel_list; |
361c99a6 | 101 | |
602ad878 | 102 | static struct target target = { |
77a6f014 NK |
103 | .uid = UINT_MAX, |
104 | }; | |
ddcacfa0 | 105 | |
1e5a2931 JO |
106 | typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu); |
107 | ||
3d632595 | 108 | static int run_count = 1; |
2e6cdf99 | 109 | static bool no_inherit = false; |
d07f0b12 | 110 | static volatile pid_t child_pid = -1; |
c0555642 | 111 | static bool null_run = false; |
2cba3ffb | 112 | static int detailed_run = 0; |
4cabc3d1 | 113 | static bool transaction_run; |
201e0b06 | 114 | static bool big_num = true; |
d7470b6a | 115 | static int big_num_opt = -1; |
d7470b6a SE |
116 | static const char *csv_sep = NULL; |
117 | static bool csv_output = false; | |
43bece79 | 118 | static bool group = false; |
1f16c575 PZ |
119 | static const char *pre_cmd = NULL; |
120 | static const char *post_cmd = NULL; | |
121 | static bool sync_run = false; | |
41191688 | 122 | static unsigned int initial_delay = 0; |
410136f5 | 123 | static unsigned int unit_width = 4; /* strlen("unit") */ |
a7e191c3 | 124 | static bool forever = false; |
13370a9b | 125 | static struct timespec ref_time; |
86ee6e18 | 126 | static struct cpu_map *aggr_map; |
1e5a2931 | 127 | static aggr_get_id_t aggr_get_id; |
e0547311 JO |
128 | static bool append_file; |
129 | static const char *output_name; | |
130 | static int output_fd; | |
5af52b51 | 131 | |
4979d0c7 JO |
132 | struct perf_stat { |
133 | bool record; | |
134 | struct perf_data_file file; | |
135 | struct perf_session *session; | |
136 | u64 bytes_written; | |
ba6039b6 | 137 | struct perf_tool tool; |
1975d36e JO |
138 | bool maps_allocated; |
139 | struct cpu_map *cpus; | |
140 | struct thread_map *threads; | |
89af4e05 | 141 | enum aggr_mode aggr_mode; |
4979d0c7 JO |
142 | }; |
143 | ||
144 | static struct perf_stat perf_stat; | |
145 | #define STAT_RECORD perf_stat.record | |
146 | ||
60666c63 LW |
147 | static volatile int done = 0; |
148 | ||
421a50f3 JO |
149 | static struct perf_stat_config stat_config = { |
150 | .aggr_mode = AGGR_GLOBAL, | |
711a572e | 151 | .scale = true, |
421a50f3 JO |
152 | }; |
153 | ||
13370a9b SE |
154 | static inline void diff_timespec(struct timespec *r, struct timespec *a, |
155 | struct timespec *b) | |
156 | { | |
157 | r->tv_sec = a->tv_sec - b->tv_sec; | |
158 | if (a->tv_nsec < b->tv_nsec) { | |
159 | r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec; | |
160 | r->tv_sec--; | |
161 | } else { | |
162 | r->tv_nsec = a->tv_nsec - b->tv_nsec ; | |
163 | } | |
164 | } | |
165 | ||
254ecbc7 JO |
166 | static void perf_stat__reset_stats(void) |
167 | { | |
168 | perf_evlist__reset_stats(evsel_list); | |
f87027b9 | 169 | perf_stat__reset_shadow_stats(); |
1eda3b21 JO |
170 | } |
171 | ||
cac21425 | 172 | static int create_perf_stat_counter(struct perf_evsel *evsel) |
ddcacfa0 | 173 | { |
69aad6f1 | 174 | struct perf_event_attr *attr = &evsel->attr; |
727ab04e | 175 | |
711a572e | 176 | if (stat_config.scale) |
a21ca2ca IM |
177 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
178 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 179 | |
5d2cd909 ACM |
180 | attr->inherit = !no_inherit; |
181 | ||
6acd8e92 JO |
182 | /* |
183 | * Some events get initialized with sample_(period/type) set, | |
184 | * like tracepoints. Clear it up for counting. | |
185 | */ | |
186 | attr->sample_period = 0; | |
6db1a5c1 | 187 | |
4979d0c7 JO |
188 | /* |
189 | * But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless | |
190 | * while avoiding that older tools show confusing messages. | |
6db1a5c1 JO |
191 | * |
192 | * However for pipe sessions we need to keep it zero, | |
193 | * because script's perf_evsel__check_attr is triggered | |
194 | * by attr->sample_type != 0, and we can't run it on | |
195 | * stat sessions. | |
4979d0c7 | 196 | */ |
6db1a5c1 JO |
197 | if (!(STAT_RECORD && perf_stat.file.is_pipe)) |
198 | attr->sample_type = PERF_SAMPLE_IDENTIFIER; | |
6acd8e92 | 199 | |
67ccdecd JO |
200 | /* |
201 | * Disabling all counters initially, they will be enabled | |
202 | * either manually by us or by kernel via enable_on_exec | |
203 | * set later. | |
204 | */ | |
c8280cec | 205 | if (perf_evsel__is_group_leader(evsel)) { |
67ccdecd JO |
206 | attr->disabled = 1; |
207 | ||
c8280cec JO |
208 | /* |
209 | * In case of initial_delay we enable tracee | |
210 | * events manually. | |
211 | */ | |
212 | if (target__none(&target) && !initial_delay) | |
41191688 | 213 | attr->enable_on_exec = 1; |
ddcacfa0 | 214 | } |
084ab9f8 | 215 | |
c8280cec JO |
216 | if (target__has_cpu(&target)) |
217 | return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel)); | |
218 | ||
594ac61a | 219 | return perf_evsel__open_per_thread(evsel, evsel_list->threads); |
ddcacfa0 IM |
220 | } |
221 | ||
c04f5e5d IM |
222 | /* |
223 | * Does the counter have nsecs as a unit? | |
224 | */ | |
daec78a0 | 225 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 226 | { |
daec78a0 ACM |
227 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
228 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
229 | return 1; |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
8b99b1a4 JO |
234 | static int process_synthesized_event(struct perf_tool *tool __maybe_unused, |
235 | union perf_event *event, | |
236 | struct perf_sample *sample __maybe_unused, | |
237 | struct machine *machine __maybe_unused) | |
4979d0c7 | 238 | { |
8b99b1a4 | 239 | if (perf_data_file__write(&perf_stat.file, event, event->header.size) < 0) { |
4979d0c7 JO |
240 | pr_err("failed to write perf data, error: %m\n"); |
241 | return -1; | |
242 | } | |
243 | ||
8b99b1a4 | 244 | perf_stat.bytes_written += event->header.size; |
4979d0c7 JO |
245 | return 0; |
246 | } | |
247 | ||
1975d36e | 248 | static int write_stat_round_event(u64 tm, u64 type) |
7aad0c32 | 249 | { |
1975d36e | 250 | return perf_event__synthesize_stat_round(NULL, tm, type, |
7aad0c32 JO |
251 | process_synthesized_event, |
252 | NULL); | |
253 | } | |
254 | ||
255 | #define WRITE_STAT_ROUND_EVENT(time, interval) \ | |
256 | write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) | |
257 | ||
5a6ea81b JO |
258 | #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) |
259 | ||
260 | static int | |
261 | perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread, | |
262 | struct perf_counts_values *count) | |
263 | { | |
264 | struct perf_sample_id *sid = SID(counter, cpu, thread); | |
265 | ||
266 | return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, | |
267 | process_synthesized_event, NULL); | |
268 | } | |
269 | ||
f5b4a9c3 SE |
270 | /* |
271 | * Read out the results of a single counter: | |
272 | * do not aggregate counts across CPUs in system-wide mode | |
273 | */ | |
c52b12ed | 274 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 275 | { |
9bf1a529 JO |
276 | int nthreads = thread_map__nr(evsel_list->threads); |
277 | int ncpus = perf_evsel__nr_cpus(counter); | |
278 | int cpu, thread; | |
f5b4a9c3 | 279 | |
3b4331d9 SP |
280 | if (!counter->supported) |
281 | return -ENOENT; | |
282 | ||
9bf1a529 JO |
283 | if (counter->system_wide) |
284 | nthreads = 1; | |
285 | ||
286 | for (thread = 0; thread < nthreads; thread++) { | |
287 | for (cpu = 0; cpu < ncpus; cpu++) { | |
3b3eb044 JO |
288 | struct perf_counts_values *count; |
289 | ||
290 | count = perf_counts(counter->counts, cpu, thread); | |
291 | if (perf_evsel__read(counter, cpu, thread, count)) | |
9bf1a529 | 292 | return -1; |
5a6ea81b JO |
293 | |
294 | if (STAT_RECORD) { | |
295 | if (perf_evsel__write_stat_event(counter, cpu, thread, count)) { | |
296 | pr_err("failed to write stat event\n"); | |
297 | return -1; | |
298 | } | |
299 | } | |
9bf1a529 | 300 | } |
f5b4a9c3 | 301 | } |
c52b12ed ACM |
302 | |
303 | return 0; | |
2996f5dd IM |
304 | } |
305 | ||
5fc472a6 | 306 | static void read_counters(bool close_counters) |
13370a9b | 307 | { |
13370a9b | 308 | struct perf_evsel *counter; |
13370a9b | 309 | |
106a94a0 | 310 | evlist__for_each(evsel_list, counter) { |
3b3eb044 | 311 | if (read_counter(counter)) |
245bad8e | 312 | pr_debug("failed to read counter %s\n", counter->name); |
3b3eb044 | 313 | |
f80010eb | 314 | if (perf_stat_process_counter(&stat_config, counter)) |
3b3eb044 | 315 | pr_warning("failed to process counter %s\n", counter->name); |
106a94a0 | 316 | |
5fc472a6 | 317 | if (close_counters) { |
106a94a0 JO |
318 | perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), |
319 | thread_map__nr(evsel_list->threads)); | |
13370a9b SE |
320 | } |
321 | } | |
106a94a0 JO |
322 | } |
323 | ||
ba411a95 | 324 | static void process_interval(void) |
106a94a0 | 325 | { |
106a94a0 | 326 | struct timespec ts, rs; |
106a94a0 JO |
327 | |
328 | read_counters(false); | |
86ee6e18 | 329 | |
13370a9b SE |
330 | clock_gettime(CLOCK_MONOTONIC, &ts); |
331 | diff_timespec(&rs, &ts, &ref_time); | |
13370a9b | 332 | |
7aad0c32 JO |
333 | if (STAT_RECORD) { |
334 | if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL)) | |
335 | pr_err("failed to write stat round event\n"); | |
336 | } | |
337 | ||
d4f63a47 | 338 | print_counters(&rs, 0, NULL); |
13370a9b SE |
339 | } |
340 | ||
67ccdecd | 341 | static void enable_counters(void) |
41191688 | 342 | { |
67ccdecd | 343 | if (initial_delay) |
41191688 | 344 | usleep(initial_delay * 1000); |
67ccdecd JO |
345 | |
346 | /* | |
347 | * We need to enable counters only if: | |
348 | * - we don't have tracee (attaching to task or cpu) | |
349 | * - we have initial delay configured | |
350 | */ | |
351 | if (!target__none(&target) || initial_delay) | |
ab46db0a | 352 | perf_evlist__enable(evsel_list); |
41191688 AK |
353 | } |
354 | ||
f33cbe72 | 355 | static volatile int workload_exec_errno; |
6af206fd ACM |
356 | |
357 | /* | |
358 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
359 | * if the fork fails, since we asked by setting its | |
360 | * want_signal to true. | |
361 | */ | |
f33cbe72 ACM |
362 | static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, |
363 | void *ucontext __maybe_unused) | |
6af206fd | 364 | { |
f33cbe72 | 365 | workload_exec_errno = info->si_value.sival_int; |
6af206fd ACM |
366 | } |
367 | ||
7b60a7e3 JO |
368 | static bool has_unit(struct perf_evsel *counter) |
369 | { | |
370 | return counter->unit && *counter->unit; | |
371 | } | |
372 | ||
373 | static bool has_scale(struct perf_evsel *counter) | |
374 | { | |
375 | return counter->scale != 1; | |
376 | } | |
377 | ||
664c98d4 | 378 | static int perf_stat_synthesize_config(bool is_pipe) |
8b99b1a4 | 379 | { |
7b60a7e3 | 380 | struct perf_evsel *counter; |
8b99b1a4 JO |
381 | int err; |
382 | ||
664c98d4 JO |
383 | if (is_pipe) { |
384 | err = perf_event__synthesize_attrs(NULL, perf_stat.session, | |
385 | process_synthesized_event); | |
386 | if (err < 0) { | |
387 | pr_err("Couldn't synthesize attrs.\n"); | |
388 | return err; | |
389 | } | |
390 | } | |
391 | ||
7b60a7e3 JO |
392 | /* |
393 | * Synthesize other events stuff not carried within | |
394 | * attr event - unit, scale, name | |
395 | */ | |
396 | evlist__for_each(evsel_list, counter) { | |
397 | if (!counter->supported) | |
398 | continue; | |
399 | ||
400 | /* | |
401 | * Synthesize unit and scale only if it's defined. | |
402 | */ | |
403 | if (has_unit(counter)) { | |
404 | err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event); | |
405 | if (err < 0) { | |
406 | pr_err("Couldn't synthesize evsel unit.\n"); | |
407 | return err; | |
408 | } | |
409 | } | |
410 | ||
411 | if (has_scale(counter)) { | |
412 | err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event); | |
413 | if (err < 0) { | |
414 | pr_err("Couldn't synthesize evsel scale.\n"); | |
415 | return err; | |
416 | } | |
417 | } | |
418 | ||
419 | if (counter->own_cpus) { | |
420 | err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event); | |
421 | if (err < 0) { | |
422 | pr_err("Couldn't synthesize evsel scale.\n"); | |
423 | return err; | |
424 | } | |
425 | } | |
426 | ||
427 | /* | |
428 | * Name is needed only for pipe output, | |
429 | * perf.data carries event names. | |
430 | */ | |
431 | if (is_pipe) { | |
432 | err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event); | |
433 | if (err < 0) { | |
434 | pr_err("Couldn't synthesize evsel name.\n"); | |
435 | return err; | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
8b99b1a4 JO |
440 | err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads, |
441 | process_synthesized_event, | |
442 | NULL); | |
443 | if (err < 0) { | |
444 | pr_err("Couldn't synthesize thread map.\n"); | |
445 | return err; | |
446 | } | |
447 | ||
448 | err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus, | |
449 | process_synthesized_event, NULL); | |
450 | if (err < 0) { | |
451 | pr_err("Couldn't synthesize thread map.\n"); | |
452 | return err; | |
453 | } | |
454 | ||
455 | err = perf_event__synthesize_stat_config(NULL, &stat_config, | |
456 | process_synthesized_event, NULL); | |
457 | if (err < 0) { | |
458 | pr_err("Couldn't synthesize config.\n"); | |
459 | return err; | |
460 | } | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
2af4646d JO |
465 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
466 | ||
467 | static int __store_counter_ids(struct perf_evsel *counter, | |
468 | struct cpu_map *cpus, | |
469 | struct thread_map *threads) | |
470 | { | |
471 | int cpu, thread; | |
472 | ||
473 | for (cpu = 0; cpu < cpus->nr; cpu++) { | |
474 | for (thread = 0; thread < threads->nr; thread++) { | |
475 | int fd = FD(counter, cpu, thread); | |
476 | ||
477 | if (perf_evlist__id_add_fd(evsel_list, counter, | |
478 | cpu, thread, fd) < 0) | |
479 | return -1; | |
480 | } | |
481 | } | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | static int store_counter_ids(struct perf_evsel *counter) | |
487 | { | |
488 | struct cpu_map *cpus = counter->cpus; | |
489 | struct thread_map *threads = counter->threads; | |
490 | ||
491 | if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr)) | |
492 | return -ENOMEM; | |
493 | ||
494 | return __store_counter_ids(counter, cpus, threads); | |
495 | } | |
496 | ||
acf28922 | 497 | static int __run_perf_stat(int argc, const char **argv) |
42202dd5 | 498 | { |
ec0d3d1f | 499 | int interval = stat_config.interval; |
56e52e85 | 500 | char msg[512]; |
42202dd5 | 501 | unsigned long long t0, t1; |
cac21425 | 502 | struct perf_evsel *counter; |
13370a9b | 503 | struct timespec ts; |
410136f5 | 504 | size_t l; |
42202dd5 | 505 | int status = 0; |
6be2850e | 506 | const bool forks = (argc > 0); |
664c98d4 | 507 | bool is_pipe = STAT_RECORD ? perf_stat.file.is_pipe : false; |
42202dd5 | 508 | |
13370a9b SE |
509 | if (interval) { |
510 | ts.tv_sec = interval / 1000; | |
511 | ts.tv_nsec = (interval % 1000) * 1000000; | |
512 | } else { | |
513 | ts.tv_sec = 1; | |
514 | ts.tv_nsec = 0; | |
515 | } | |
516 | ||
60666c63 | 517 | if (forks) { |
664c98d4 | 518 | if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe, |
735f7e0b | 519 | workload_exec_failed_signal) < 0) { |
acf28922 NK |
520 | perror("failed to prepare workload"); |
521 | return -1; | |
60666c63 | 522 | } |
d20a47e7 | 523 | child_pid = evsel_list->workload.pid; |
051ae7f7 PM |
524 | } |
525 | ||
6a4bb04c | 526 | if (group) |
63dab225 | 527 | perf_evlist__set_leader(evsel_list); |
6a4bb04c | 528 | |
0050f7aa | 529 | evlist__for_each(evsel_list, counter) { |
cac21425 | 530 | if (create_perf_stat_counter(counter) < 0) { |
979987a5 DA |
531 | /* |
532 | * PPC returns ENXIO for HW counters until 2.6.37 | |
533 | * (behavior changed with commit b0a873e). | |
534 | */ | |
38f6ae1e | 535 | if (errno == EINVAL || errno == ENOSYS || |
979987a5 DA |
536 | errno == ENOENT || errno == EOPNOTSUPP || |
537 | errno == ENXIO) { | |
c63ca0c0 DA |
538 | if (verbose) |
539 | ui__warning("%s event is not supported by the kernel.\n", | |
7289f83c | 540 | perf_evsel__name(counter)); |
2cee77c4 | 541 | counter->supported = false; |
cb5ef600 KL |
542 | |
543 | if ((counter->leader != counter) || | |
544 | !(counter->leader->nr_members > 1)) | |
545 | continue; | |
c63ca0c0 | 546 | } |
ede70290 | 547 | |
56e52e85 ACM |
548 | perf_evsel__open_strerror(counter, &target, |
549 | errno, msg, sizeof(msg)); | |
550 | ui__error("%s\n", msg); | |
551 | ||
48290609 ACM |
552 | if (child_pid != -1) |
553 | kill(child_pid, SIGTERM); | |
fceda7fe | 554 | |
48290609 ACM |
555 | return -1; |
556 | } | |
2cee77c4 | 557 | counter->supported = true; |
410136f5 SE |
558 | |
559 | l = strlen(counter->unit); | |
560 | if (l > unit_width) | |
561 | unit_width = l; | |
2af4646d JO |
562 | |
563 | if (STAT_RECORD && store_counter_ids(counter)) | |
564 | return -1; | |
084ab9f8 | 565 | } |
42202dd5 | 566 | |
23d4aad4 ACM |
567 | if (perf_evlist__apply_filters(evsel_list, &counter)) { |
568 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", | |
569 | counter->filter, perf_evsel__name(counter), errno, | |
759e612b | 570 | strerror_r(errno, msg, sizeof(msg))); |
cfd748ae FW |
571 | return -1; |
572 | } | |
573 | ||
4979d0c7 JO |
574 | if (STAT_RECORD) { |
575 | int err, fd = perf_data_file__fd(&perf_stat.file); | |
576 | ||
664c98d4 JO |
577 | if (is_pipe) { |
578 | err = perf_header__write_pipe(perf_data_file__fd(&perf_stat.file)); | |
579 | } else { | |
580 | err = perf_session__write_header(perf_stat.session, evsel_list, | |
581 | fd, false); | |
582 | } | |
583 | ||
4979d0c7 JO |
584 | if (err < 0) |
585 | return err; | |
8b99b1a4 | 586 | |
664c98d4 | 587 | err = perf_stat_synthesize_config(is_pipe); |
8b99b1a4 JO |
588 | if (err < 0) |
589 | return err; | |
4979d0c7 JO |
590 | } |
591 | ||
42202dd5 IM |
592 | /* |
593 | * Enable counters and exec the command: | |
594 | */ | |
595 | t0 = rdclock(); | |
13370a9b | 596 | clock_gettime(CLOCK_MONOTONIC, &ref_time); |
42202dd5 | 597 | |
60666c63 | 598 | if (forks) { |
acf28922 | 599 | perf_evlist__start_workload(evsel_list); |
67ccdecd | 600 | enable_counters(); |
acf28922 | 601 | |
13370a9b SE |
602 | if (interval) { |
603 | while (!waitpid(child_pid, &status, WNOHANG)) { | |
604 | nanosleep(&ts, NULL); | |
ba411a95 | 605 | process_interval(); |
13370a9b SE |
606 | } |
607 | } | |
60666c63 | 608 | wait(&status); |
6af206fd | 609 | |
f33cbe72 ACM |
610 | if (workload_exec_errno) { |
611 | const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg)); | |
612 | pr_err("Workload failed: %s\n", emsg); | |
6af206fd | 613 | return -1; |
f33cbe72 | 614 | } |
6af206fd | 615 | |
33e49ea7 AK |
616 | if (WIFSIGNALED(status)) |
617 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 618 | } else { |
67ccdecd | 619 | enable_counters(); |
13370a9b SE |
620 | while (!done) { |
621 | nanosleep(&ts, NULL); | |
622 | if (interval) | |
ba411a95 | 623 | process_interval(); |
13370a9b | 624 | } |
60666c63 | 625 | } |
42202dd5 | 626 | |
42202dd5 IM |
627 | t1 = rdclock(); |
628 | ||
9e9772c4 | 629 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 630 | |
106a94a0 | 631 | read_counters(true); |
c52b12ed | 632 | |
42202dd5 IM |
633 | return WEXITSTATUS(status); |
634 | } | |
635 | ||
41cde476 | 636 | static int run_perf_stat(int argc, const char **argv) |
1f16c575 PZ |
637 | { |
638 | int ret; | |
639 | ||
640 | if (pre_cmd) { | |
641 | ret = system(pre_cmd); | |
642 | if (ret) | |
643 | return ret; | |
644 | } | |
645 | ||
646 | if (sync_run) | |
647 | sync(); | |
648 | ||
649 | ret = __run_perf_stat(argc, argv); | |
650 | if (ret) | |
651 | return ret; | |
652 | ||
653 | if (post_cmd) { | |
654 | ret = system(post_cmd); | |
655 | if (ret) | |
656 | return ret; | |
657 | } | |
658 | ||
659 | return ret; | |
660 | } | |
661 | ||
d73515c0 AK |
662 | static void print_running(u64 run, u64 ena) |
663 | { | |
664 | if (csv_output) { | |
5821522e | 665 | fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f", |
d73515c0 AK |
666 | csv_sep, |
667 | run, | |
668 | csv_sep, | |
669 | ena ? 100.0 * run / ena : 100.0); | |
670 | } else if (run != ena) { | |
5821522e | 671 | fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena); |
d73515c0 AK |
672 | } |
673 | } | |
674 | ||
f99844cb IM |
675 | static void print_noise_pct(double total, double avg) |
676 | { | |
0007ecea | 677 | double pct = rel_stddev_stats(total, avg); |
f99844cb | 678 | |
3ae9a34d | 679 | if (csv_output) |
5821522e | 680 | fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct); |
a1bca6cc | 681 | else if (pct) |
5821522e | 682 | fprintf(stat_config.output, " ( +-%6.2f%% )", pct); |
f99844cb IM |
683 | } |
684 | ||
69aad6f1 | 685 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 686 | { |
581cc8a2 | 687 | struct perf_stat_evsel *ps; |
69aad6f1 | 688 | |
849abde9 PZ |
689 | if (run_count == 1) |
690 | return; | |
691 | ||
69aad6f1 | 692 | ps = evsel->priv; |
f99844cb | 693 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
694 | } |
695 | ||
12c08a9f | 696 | static void aggr_printout(struct perf_evsel *evsel, int id, int nr) |
44175b6f | 697 | { |
421a50f3 | 698 | switch (stat_config.aggr_mode) { |
12c08a9f | 699 | case AGGR_CORE: |
5821522e | 700 | fprintf(stat_config.output, "S%d-C%*d%s%*d%s", |
12c08a9f SE |
701 | cpu_map__id_to_socket(id), |
702 | csv_output ? 0 : -8, | |
703 | cpu_map__id_to_cpu(id), | |
704 | csv_sep, | |
705 | csv_output ? 0 : 4, | |
706 | nr, | |
707 | csv_sep); | |
708 | break; | |
86ee6e18 | 709 | case AGGR_SOCKET: |
5821522e | 710 | fprintf(stat_config.output, "S%*d%s%*d%s", |
d7e7a451 | 711 | csv_output ? 0 : -5, |
12c08a9f | 712 | id, |
d7e7a451 SE |
713 | csv_sep, |
714 | csv_output ? 0 : 4, | |
715 | nr, | |
716 | csv_sep); | |
86ee6e18 SE |
717 | break; |
718 | case AGGR_NONE: | |
5821522e | 719 | fprintf(stat_config.output, "CPU%*d%s", |
d7470b6a | 720 | csv_output ? 0 : -4, |
12c08a9f | 721 | perf_evsel__cpus(evsel)->map[id], csv_sep); |
86ee6e18 | 722 | break; |
32b8af82 | 723 | case AGGR_THREAD: |
5821522e | 724 | fprintf(stat_config.output, "%*s-%*d%s", |
32b8af82 JO |
725 | csv_output ? 0 : 16, |
726 | thread_map__comm(evsel->threads, id), | |
727 | csv_output ? 0 : -8, | |
728 | thread_map__pid(evsel->threads, id), | |
729 | csv_sep); | |
730 | break; | |
86ee6e18 | 731 | case AGGR_GLOBAL: |
208df99e | 732 | case AGGR_UNSET: |
86ee6e18 SE |
733 | default: |
734 | break; | |
735 | } | |
736 | } | |
737 | ||
da88c7f7 | 738 | static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg) |
86ee6e18 | 739 | { |
5821522e | 740 | FILE *output = stat_config.output; |
86ee6e18 | 741 | double msecs = avg / 1e6; |
410136f5 | 742 | const char *fmt_v, *fmt_n; |
4bbe5a61 | 743 | char name[25]; |
86ee6e18 | 744 | |
410136f5 SE |
745 | fmt_v = csv_output ? "%.6f%s" : "%18.6f%s"; |
746 | fmt_n = csv_output ? "%s" : "%-25s"; | |
747 | ||
da88c7f7 | 748 | aggr_printout(evsel, id, nr); |
d7470b6a | 749 | |
4bbe5a61 DA |
750 | scnprintf(name, sizeof(name), "%s%s", |
751 | perf_evsel__name(evsel), csv_output ? "" : " (msec)"); | |
410136f5 SE |
752 | |
753 | fprintf(output, fmt_v, msecs, csv_sep); | |
754 | ||
755 | if (csv_output) | |
756 | fprintf(output, "%s%s", evsel->unit, csv_sep); | |
757 | else | |
758 | fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep); | |
759 | ||
760 | fprintf(output, fmt_n, name); | |
d7470b6a | 761 | |
023695d9 | 762 | if (evsel->cgrp) |
4aa9015f | 763 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
44175b6f IM |
764 | } |
765 | ||
556b1fb7 JO |
766 | static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg) |
767 | { | |
5821522e | 768 | FILE *output = stat_config.output; |
556b1fb7 JO |
769 | double sc = evsel->scale; |
770 | const char *fmt; | |
556b1fb7 JO |
771 | |
772 | if (csv_output) { | |
773 | fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s"; | |
774 | } else { | |
775 | if (big_num) | |
776 | fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s"; | |
777 | else | |
778 | fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s"; | |
779 | } | |
780 | ||
781 | aggr_printout(evsel, id, nr); | |
782 | ||
556b1fb7 JO |
783 | fprintf(output, fmt, avg, csv_sep); |
784 | ||
785 | if (evsel->unit) | |
786 | fprintf(output, "%-*s%s", | |
787 | csv_output ? 0 : unit_width, | |
788 | evsel->unit, csv_sep); | |
789 | ||
790 | fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel)); | |
791 | ||
792 | if (evsel->cgrp) | |
793 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); | |
eedfcb4b | 794 | } |
556b1fb7 | 795 | |
eedfcb4b AK |
796 | static void printout(int id, int nr, struct perf_evsel *counter, double uval) |
797 | { | |
798 | int cpu = cpu_map__id_to_cpu(id); | |
799 | ||
800 | if (stat_config.aggr_mode == AGGR_GLOBAL) | |
801 | cpu = 0; | |
802 | ||
803 | if (nsec_counter(counter)) | |
804 | nsec_printout(id, nr, counter, uval); | |
805 | else | |
806 | abs_printout(id, nr, counter, uval); | |
556b1fb7 | 807 | |
eedfcb4b AK |
808 | if (!csv_output && !stat_config.interval) |
809 | perf_stat__print_shadow_stats(stat_config.output, counter, | |
810 | uval, cpu, | |
811 | stat_config.aggr_mode); | |
556b1fb7 JO |
812 | } |
813 | ||
86ee6e18 | 814 | static void print_aggr(char *prefix) |
d7e7a451 | 815 | { |
5821522e | 816 | FILE *output = stat_config.output; |
d7e7a451 | 817 | struct perf_evsel *counter; |
601083cf | 818 | int cpu, s, s2, id, nr; |
410136f5 | 819 | double uval; |
d7e7a451 | 820 | u64 ena, run, val; |
d7e7a451 | 821 | |
86ee6e18 | 822 | if (!(aggr_map || aggr_get_id)) |
d7e7a451 SE |
823 | return; |
824 | ||
86ee6e18 SE |
825 | for (s = 0; s < aggr_map->nr; s++) { |
826 | id = aggr_map->map[s]; | |
0050f7aa | 827 | evlist__for_each(evsel_list, counter) { |
d7e7a451 SE |
828 | val = ena = run = 0; |
829 | nr = 0; | |
830 | for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) { | |
601083cf | 831 | s2 = aggr_get_id(perf_evsel__cpus(counter), cpu); |
86ee6e18 | 832 | if (s2 != id) |
d7e7a451 | 833 | continue; |
a6fa0038 JO |
834 | val += perf_counts(counter->counts, cpu, 0)->val; |
835 | ena += perf_counts(counter->counts, cpu, 0)->ena; | |
836 | run += perf_counts(counter->counts, cpu, 0)->run; | |
d7e7a451 SE |
837 | nr++; |
838 | } | |
839 | if (prefix) | |
840 | fprintf(output, "%s", prefix); | |
841 | ||
842 | if (run == 0 || ena == 0) { | |
582ec082 | 843 | aggr_printout(counter, id, nr); |
86ee6e18 | 844 | |
410136f5 | 845 | fprintf(output, "%*s%s", |
d7e7a451 SE |
846 | csv_output ? 0 : 18, |
847 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, | |
410136f5 SE |
848 | csv_sep); |
849 | ||
850 | fprintf(output, "%-*s%s", | |
851 | csv_output ? 0 : unit_width, | |
852 | counter->unit, csv_sep); | |
853 | ||
854 | fprintf(output, "%*s", | |
855 | csv_output ? 0 : -25, | |
d7e7a451 | 856 | perf_evsel__name(counter)); |
86ee6e18 | 857 | |
d7e7a451 SE |
858 | if (counter->cgrp) |
859 | fprintf(output, "%s%s", | |
860 | csv_sep, counter->cgrp->name); | |
861 | ||
d73515c0 | 862 | print_running(run, ena); |
d7e7a451 SE |
863 | fputc('\n', output); |
864 | continue; | |
865 | } | |
410136f5 | 866 | uval = val * counter->scale; |
eedfcb4b | 867 | printout(id, nr, counter, uval); |
d73515c0 | 868 | if (!csv_output) |
d7e7a451 SE |
869 | print_noise(counter, 1.0); |
870 | ||
d73515c0 | 871 | print_running(run, ena); |
d7e7a451 SE |
872 | fputc('\n', output); |
873 | } | |
874 | } | |
875 | } | |
876 | ||
32b8af82 JO |
877 | static void print_aggr_thread(struct perf_evsel *counter, char *prefix) |
878 | { | |
5821522e | 879 | FILE *output = stat_config.output; |
32b8af82 JO |
880 | int nthreads = thread_map__nr(counter->threads); |
881 | int ncpus = cpu_map__nr(counter->cpus); | |
882 | int cpu, thread; | |
883 | double uval; | |
884 | ||
885 | for (thread = 0; thread < nthreads; thread++) { | |
886 | u64 ena = 0, run = 0, val = 0; | |
887 | ||
888 | for (cpu = 0; cpu < ncpus; cpu++) { | |
889 | val += perf_counts(counter->counts, cpu, thread)->val; | |
890 | ena += perf_counts(counter->counts, cpu, thread)->ena; | |
891 | run += perf_counts(counter->counts, cpu, thread)->run; | |
892 | } | |
893 | ||
894 | if (prefix) | |
895 | fprintf(output, "%s", prefix); | |
896 | ||
897 | uval = val * counter->scale; | |
eedfcb4b | 898 | printout(thread, 0, counter, uval); |
32b8af82 JO |
899 | |
900 | if (!csv_output) | |
901 | print_noise(counter, 1.0); | |
902 | ||
903 | print_running(run, ena); | |
904 | fputc('\n', output); | |
905 | } | |
906 | } | |
907 | ||
2996f5dd IM |
908 | /* |
909 | * Print out the results of a single counter: | |
f5b4a9c3 | 910 | * aggregated counts in system-wide mode |
2996f5dd | 911 | */ |
13370a9b | 912 | static void print_counter_aggr(struct perf_evsel *counter, char *prefix) |
2996f5dd | 913 | { |
5821522e | 914 | FILE *output = stat_config.output; |
581cc8a2 | 915 | struct perf_stat_evsel *ps = counter->priv; |
69aad6f1 | 916 | double avg = avg_stats(&ps->res_stats[0]); |
c52b12ed | 917 | int scaled = counter->counts->scaled; |
410136f5 | 918 | double uval; |
d73515c0 AK |
919 | double avg_enabled, avg_running; |
920 | ||
921 | avg_enabled = avg_stats(&ps->res_stats[1]); | |
922 | avg_running = avg_stats(&ps->res_stats[2]); | |
2996f5dd | 923 | |
13370a9b SE |
924 | if (prefix) |
925 | fprintf(output, "%s", prefix); | |
926 | ||
3b4331d9 | 927 | if (scaled == -1 || !counter->supported) { |
410136f5 | 928 | fprintf(output, "%*s%s", |
d7470b6a | 929 | csv_output ? 0 : 18, |
2cee77c4 | 930 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
410136f5 SE |
931 | csv_sep); |
932 | fprintf(output, "%-*s%s", | |
933 | csv_output ? 0 : unit_width, | |
934 | counter->unit, csv_sep); | |
935 | fprintf(output, "%*s", | |
936 | csv_output ? 0 : -25, | |
7289f83c | 937 | perf_evsel__name(counter)); |
023695d9 SE |
938 | |
939 | if (counter->cgrp) | |
4aa9015f | 940 | fprintf(output, "%s%s", csv_sep, counter->cgrp->name); |
023695d9 | 941 | |
d73515c0 | 942 | print_running(avg_running, avg_enabled); |
4aa9015f | 943 | fputc('\n', output); |
2996f5dd IM |
944 | return; |
945 | } | |
c04f5e5d | 946 | |
410136f5 | 947 | uval = avg * counter->scale; |
eedfcb4b | 948 | printout(-1, 0, counter, uval); |
849abde9 | 949 | |
3ae9a34d ZH |
950 | print_noise(counter, avg); |
951 | ||
d73515c0 | 952 | print_running(avg_running, avg_enabled); |
4aa9015f | 953 | fprintf(output, "\n"); |
c04f5e5d IM |
954 | } |
955 | ||
f5b4a9c3 SE |
956 | /* |
957 | * Print out the results of a single counter: | |
958 | * does not use aggregated count in system-wide | |
959 | */ | |
13370a9b | 960 | static void print_counter(struct perf_evsel *counter, char *prefix) |
f5b4a9c3 | 961 | { |
5821522e | 962 | FILE *output = stat_config.output; |
f5b4a9c3 | 963 | u64 ena, run, val; |
410136f5 | 964 | double uval; |
f5b4a9c3 SE |
965 | int cpu; |
966 | ||
7ae92e74 | 967 | for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) { |
a6fa0038 JO |
968 | val = perf_counts(counter->counts, cpu, 0)->val; |
969 | ena = perf_counts(counter->counts, cpu, 0)->ena; | |
970 | run = perf_counts(counter->counts, cpu, 0)->run; | |
13370a9b SE |
971 | |
972 | if (prefix) | |
973 | fprintf(output, "%s", prefix); | |
974 | ||
f5b4a9c3 | 975 | if (run == 0 || ena == 0) { |
410136f5 | 976 | fprintf(output, "CPU%*d%s%*s%s", |
d7470b6a | 977 | csv_output ? 0 : -4, |
7ae92e74 | 978 | perf_evsel__cpus(counter)->map[cpu], csv_sep, |
d7470b6a | 979 | csv_output ? 0 : 18, |
2cee77c4 | 980 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
410136f5 SE |
981 | csv_sep); |
982 | ||
983 | fprintf(output, "%-*s%s", | |
984 | csv_output ? 0 : unit_width, | |
985 | counter->unit, csv_sep); | |
986 | ||
987 | fprintf(output, "%*s", | |
988 | csv_output ? 0 : -25, | |
989 | perf_evsel__name(counter)); | |
f5b4a9c3 | 990 | |
023695d9 | 991 | if (counter->cgrp) |
4aa9015f SE |
992 | fprintf(output, "%s%s", |
993 | csv_sep, counter->cgrp->name); | |
023695d9 | 994 | |
d73515c0 | 995 | print_running(run, ena); |
4aa9015f | 996 | fputc('\n', output); |
f5b4a9c3 SE |
997 | continue; |
998 | } | |
999 | ||
410136f5 | 1000 | uval = val * counter->scale; |
eedfcb4b | 1001 | printout(cpu, 0, counter, uval); |
d73515c0 | 1002 | if (!csv_output) |
d7470b6a | 1003 | print_noise(counter, 1.0); |
d73515c0 | 1004 | print_running(run, ena); |
f5b4a9c3 | 1005 | |
4aa9015f | 1006 | fputc('\n', output); |
f5b4a9c3 SE |
1007 | } |
1008 | } | |
1009 | ||
d4f63a47 JO |
1010 | static void print_interval(char *prefix, struct timespec *ts) |
1011 | { | |
5821522e | 1012 | FILE *output = stat_config.output; |
d4f63a47 JO |
1013 | static int num_print_interval; |
1014 | ||
1015 | sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep); | |
1016 | ||
1017 | if (num_print_interval == 0 && !csv_output) { | |
421a50f3 | 1018 | switch (stat_config.aggr_mode) { |
d4f63a47 JO |
1019 | case AGGR_SOCKET: |
1020 | fprintf(output, "# time socket cpus counts %*s events\n", unit_width, "unit"); | |
1021 | break; | |
1022 | case AGGR_CORE: | |
1023 | fprintf(output, "# time core cpus counts %*s events\n", unit_width, "unit"); | |
1024 | break; | |
1025 | case AGGR_NONE: | |
1026 | fprintf(output, "# time CPU counts %*s events\n", unit_width, "unit"); | |
1027 | break; | |
32b8af82 JO |
1028 | case AGGR_THREAD: |
1029 | fprintf(output, "# time comm-pid counts %*s events\n", unit_width, "unit"); | |
1030 | break; | |
d4f63a47 JO |
1031 | case AGGR_GLOBAL: |
1032 | default: | |
1033 | fprintf(output, "# time counts %*s events\n", unit_width, "unit"); | |
208df99e JO |
1034 | case AGGR_UNSET: |
1035 | break; | |
d4f63a47 JO |
1036 | } |
1037 | } | |
1038 | ||
1039 | if (++num_print_interval == 25) | |
1040 | num_print_interval = 0; | |
1041 | } | |
1042 | ||
1043 | static void print_header(int argc, const char **argv) | |
42202dd5 | 1044 | { |
5821522e | 1045 | FILE *output = stat_config.output; |
69aad6f1 | 1046 | int i; |
42202dd5 | 1047 | |
ddcacfa0 IM |
1048 | fflush(stdout); |
1049 | ||
d7470b6a | 1050 | if (!csv_output) { |
4aa9015f SE |
1051 | fprintf(output, "\n"); |
1052 | fprintf(output, " Performance counter stats for "); | |
62d3b617 DA |
1053 | if (target.system_wide) |
1054 | fprintf(output, "\'system wide"); | |
1055 | else if (target.cpu_list) | |
1056 | fprintf(output, "\'CPU(s) %s", target.cpu_list); | |
602ad878 | 1057 | else if (!target__has_task(&target)) { |
ba6039b6 JO |
1058 | fprintf(output, "\'%s", argv ? argv[0] : "pipe"); |
1059 | for (i = 1; argv && (i < argc); i++) | |
4aa9015f | 1060 | fprintf(output, " %s", argv[i]); |
20f946b4 NK |
1061 | } else if (target.pid) |
1062 | fprintf(output, "process id \'%s", target.pid); | |
d7470b6a | 1063 | else |
20f946b4 | 1064 | fprintf(output, "thread id \'%s", target.tid); |
44db76c8 | 1065 | |
4aa9015f | 1066 | fprintf(output, "\'"); |
d7470b6a | 1067 | if (run_count > 1) |
4aa9015f SE |
1068 | fprintf(output, " (%d runs)", run_count); |
1069 | fprintf(output, ":\n\n"); | |
d7470b6a | 1070 | } |
d4f63a47 JO |
1071 | } |
1072 | ||
1073 | static void print_footer(void) | |
1074 | { | |
5821522e JO |
1075 | FILE *output = stat_config.output; |
1076 | ||
d4f63a47 JO |
1077 | if (!null_run) |
1078 | fprintf(output, "\n"); | |
1079 | fprintf(output, " %17.9f seconds time elapsed", | |
1080 | avg_stats(&walltime_nsecs_stats)/1e9); | |
1081 | if (run_count > 1) { | |
1082 | fprintf(output, " "); | |
1083 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), | |
1084 | avg_stats(&walltime_nsecs_stats)); | |
1085 | } | |
1086 | fprintf(output, "\n\n"); | |
1087 | } | |
1088 | ||
1089 | static void print_counters(struct timespec *ts, int argc, const char **argv) | |
1090 | { | |
ec0d3d1f | 1091 | int interval = stat_config.interval; |
d4f63a47 JO |
1092 | struct perf_evsel *counter; |
1093 | char buf[64], *prefix = NULL; | |
1094 | ||
664c98d4 JO |
1095 | /* Do not print anything if we record to the pipe. */ |
1096 | if (STAT_RECORD && perf_stat.file.is_pipe) | |
1097 | return; | |
1098 | ||
d4f63a47 JO |
1099 | if (interval) |
1100 | print_interval(prefix = buf, ts); | |
1101 | else | |
1102 | print_header(argc, argv); | |
2996f5dd | 1103 | |
421a50f3 | 1104 | switch (stat_config.aggr_mode) { |
12c08a9f | 1105 | case AGGR_CORE: |
86ee6e18 | 1106 | case AGGR_SOCKET: |
d4f63a47 | 1107 | print_aggr(prefix); |
86ee6e18 | 1108 | break; |
32b8af82 JO |
1109 | case AGGR_THREAD: |
1110 | evlist__for_each(evsel_list, counter) | |
1111 | print_aggr_thread(counter, prefix); | |
1112 | break; | |
86ee6e18 | 1113 | case AGGR_GLOBAL: |
0050f7aa | 1114 | evlist__for_each(evsel_list, counter) |
d4f63a47 | 1115 | print_counter_aggr(counter, prefix); |
86ee6e18 SE |
1116 | break; |
1117 | case AGGR_NONE: | |
0050f7aa | 1118 | evlist__for_each(evsel_list, counter) |
d4f63a47 | 1119 | print_counter(counter, prefix); |
86ee6e18 | 1120 | break; |
208df99e | 1121 | case AGGR_UNSET: |
86ee6e18 SE |
1122 | default: |
1123 | break; | |
f5b4a9c3 | 1124 | } |
ddcacfa0 | 1125 | |
d4f63a47 JO |
1126 | if (!interval && !csv_output) |
1127 | print_footer(); | |
1128 | ||
5821522e | 1129 | fflush(stat_config.output); |
ddcacfa0 IM |
1130 | } |
1131 | ||
f7b7c26e PZ |
1132 | static volatile int signr = -1; |
1133 | ||
5242519b | 1134 | static void skip_signal(int signo) |
ddcacfa0 | 1135 | { |
ec0d3d1f | 1136 | if ((child_pid == -1) || stat_config.interval) |
60666c63 LW |
1137 | done = 1; |
1138 | ||
f7b7c26e | 1139 | signr = signo; |
d07f0b12 SE |
1140 | /* |
1141 | * render child_pid harmless | |
1142 | * won't send SIGTERM to a random | |
1143 | * process in case of race condition | |
1144 | * and fast PID recycling | |
1145 | */ | |
1146 | child_pid = -1; | |
f7b7c26e PZ |
1147 | } |
1148 | ||
1149 | static void sig_atexit(void) | |
1150 | { | |
d07f0b12 SE |
1151 | sigset_t set, oset; |
1152 | ||
1153 | /* | |
1154 | * avoid race condition with SIGCHLD handler | |
1155 | * in skip_signal() which is modifying child_pid | |
1156 | * goal is to avoid send SIGTERM to a random | |
1157 | * process | |
1158 | */ | |
1159 | sigemptyset(&set); | |
1160 | sigaddset(&set, SIGCHLD); | |
1161 | sigprocmask(SIG_BLOCK, &set, &oset); | |
1162 | ||
933da83a CW |
1163 | if (child_pid != -1) |
1164 | kill(child_pid, SIGTERM); | |
1165 | ||
d07f0b12 SE |
1166 | sigprocmask(SIG_SETMASK, &oset, NULL); |
1167 | ||
f7b7c26e PZ |
1168 | if (signr == -1) |
1169 | return; | |
1170 | ||
1171 | signal(signr, SIG_DFL); | |
1172 | kill(getpid(), signr); | |
5242519b IM |
1173 | } |
1174 | ||
1d037ca1 IT |
1175 | static int stat__set_big_num(const struct option *opt __maybe_unused, |
1176 | const char *s __maybe_unused, int unset) | |
d7470b6a SE |
1177 | { |
1178 | big_num_opt = unset ? 0 : 1; | |
1179 | return 0; | |
1180 | } | |
1181 | ||
e0547311 JO |
1182 | static const struct option stat_options[] = { |
1183 | OPT_BOOLEAN('T', "transaction", &transaction_run, | |
1184 | "hardware transaction statistics"), | |
1185 | OPT_CALLBACK('e', "event", &evsel_list, "event", | |
1186 | "event selector. use 'perf list' to list available events", | |
1187 | parse_events_option), | |
1188 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", | |
1189 | "event filter", parse_filter), | |
1190 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, | |
1191 | "child tasks do not inherit counters"), | |
1192 | OPT_STRING('p', "pid", &target.pid, "pid", | |
1193 | "stat events on existing process id"), | |
1194 | OPT_STRING('t', "tid", &target.tid, "tid", | |
1195 | "stat events on existing thread id"), | |
1196 | OPT_BOOLEAN('a', "all-cpus", &target.system_wide, | |
1197 | "system-wide collection from all CPUs"), | |
1198 | OPT_BOOLEAN('g', "group", &group, | |
1199 | "put the counters into a counter group"), | |
1200 | OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"), | |
1201 | OPT_INCR('v', "verbose", &verbose, | |
1202 | "be more verbose (show counter open errors, etc)"), | |
1203 | OPT_INTEGER('r', "repeat", &run_count, | |
1204 | "repeat command and print average + stddev (max: 100, forever: 0)"), | |
1205 | OPT_BOOLEAN('n', "null", &null_run, | |
1206 | "null run - dont start any counters"), | |
1207 | OPT_INCR('d', "detailed", &detailed_run, | |
1208 | "detailed run - start a lot of events"), | |
1209 | OPT_BOOLEAN('S', "sync", &sync_run, | |
1210 | "call sync() before starting a run"), | |
1211 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, | |
1212 | "print large numbers with thousands\' separators", | |
1213 | stat__set_big_num), | |
1214 | OPT_STRING('C', "cpu", &target.cpu_list, "cpu", | |
1215 | "list of cpus to monitor in system-wide"), | |
1216 | OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, | |
1217 | "disable CPU count aggregation", AGGR_NONE), | |
1218 | OPT_STRING('x', "field-separator", &csv_sep, "separator", | |
1219 | "print counts with custom separator"), | |
1220 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", | |
1221 | "monitor event in cgroup name only", parse_cgroups), | |
1222 | OPT_STRING('o', "output", &output_name, "file", "output file name"), | |
1223 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
1224 | OPT_INTEGER(0, "log-fd", &output_fd, | |
1225 | "log output to fd, instead of stderr"), | |
1226 | OPT_STRING(0, "pre", &pre_cmd, "command", | |
1227 | "command to run prior to the measured command"), | |
1228 | OPT_STRING(0, "post", &post_cmd, "command", | |
1229 | "command to run after to the measured command"), | |
1230 | OPT_UINTEGER('I', "interval-print", &stat_config.interval, | |
1231 | "print counts at regular interval in ms (>= 10)"), | |
1232 | OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, | |
1233 | "aggregate counts per processor socket", AGGR_SOCKET), | |
1234 | OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, | |
1235 | "aggregate counts per physical processor core", AGGR_CORE), | |
1236 | OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, | |
1237 | "aggregate counts per thread", AGGR_THREAD), | |
1238 | OPT_UINTEGER('D', "delay", &initial_delay, | |
1239 | "ms to wait before starting measurement after program start"), | |
1240 | OPT_END() | |
1241 | }; | |
1242 | ||
1fe7a300 JO |
1243 | static int perf_stat__get_socket(struct cpu_map *map, int cpu) |
1244 | { | |
1245 | return cpu_map__get_socket(map, cpu, NULL); | |
1246 | } | |
1247 | ||
1248 | static int perf_stat__get_core(struct cpu_map *map, int cpu) | |
1249 | { | |
1250 | return cpu_map__get_core(map, cpu, NULL); | |
1251 | } | |
1252 | ||
1e5a2931 JO |
1253 | static int cpu_map__get_max(struct cpu_map *map) |
1254 | { | |
1255 | int i, max = -1; | |
1256 | ||
1257 | for (i = 0; i < map->nr; i++) { | |
1258 | if (map->map[i] > max) | |
1259 | max = map->map[i]; | |
1260 | } | |
1261 | ||
1262 | return max; | |
1263 | } | |
1264 | ||
1265 | static struct cpu_map *cpus_aggr_map; | |
1266 | ||
1267 | static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx) | |
1268 | { | |
1269 | int cpu; | |
1270 | ||
1271 | if (idx >= map->nr) | |
1272 | return -1; | |
1273 | ||
1274 | cpu = map->map[idx]; | |
1275 | ||
1276 | if (cpus_aggr_map->map[cpu] == -1) | |
1277 | cpus_aggr_map->map[cpu] = get_id(map, idx); | |
1278 | ||
1279 | return cpus_aggr_map->map[cpu]; | |
1280 | } | |
1281 | ||
1282 | static int perf_stat__get_socket_cached(struct cpu_map *map, int idx) | |
1283 | { | |
1284 | return perf_stat__get_aggr(perf_stat__get_socket, map, idx); | |
1285 | } | |
1286 | ||
1287 | static int perf_stat__get_core_cached(struct cpu_map *map, int idx) | |
1288 | { | |
1289 | return perf_stat__get_aggr(perf_stat__get_core, map, idx); | |
1290 | } | |
1291 | ||
86ee6e18 SE |
1292 | static int perf_stat_init_aggr_mode(void) |
1293 | { | |
1e5a2931 JO |
1294 | int nr; |
1295 | ||
421a50f3 | 1296 | switch (stat_config.aggr_mode) { |
86ee6e18 SE |
1297 | case AGGR_SOCKET: |
1298 | if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) { | |
1299 | perror("cannot build socket map"); | |
1300 | return -1; | |
1301 | } | |
1e5a2931 | 1302 | aggr_get_id = perf_stat__get_socket_cached; |
86ee6e18 | 1303 | break; |
12c08a9f SE |
1304 | case AGGR_CORE: |
1305 | if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) { | |
1306 | perror("cannot build core map"); | |
1307 | return -1; | |
1308 | } | |
1e5a2931 | 1309 | aggr_get_id = perf_stat__get_core_cached; |
12c08a9f | 1310 | break; |
86ee6e18 SE |
1311 | case AGGR_NONE: |
1312 | case AGGR_GLOBAL: | |
32b8af82 | 1313 | case AGGR_THREAD: |
208df99e | 1314 | case AGGR_UNSET: |
86ee6e18 SE |
1315 | default: |
1316 | break; | |
1317 | } | |
1e5a2931 JO |
1318 | |
1319 | /* | |
1320 | * The evsel_list->cpus is the base we operate on, | |
1321 | * taking the highest cpu number to be the size of | |
1322 | * the aggregation translate cpumap. | |
1323 | */ | |
1324 | nr = cpu_map__get_max(evsel_list->cpus); | |
1325 | cpus_aggr_map = cpu_map__empty_new(nr + 1); | |
1326 | return cpus_aggr_map ? 0 : -ENOMEM; | |
86ee6e18 SE |
1327 | } |
1328 | ||
544c2ae7 MH |
1329 | static void perf_stat__exit_aggr_mode(void) |
1330 | { | |
1331 | cpu_map__put(aggr_map); | |
1332 | cpu_map__put(cpus_aggr_map); | |
1333 | aggr_map = NULL; | |
1334 | cpus_aggr_map = NULL; | |
1335 | } | |
1336 | ||
68d702f7 JO |
1337 | static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx) |
1338 | { | |
1339 | int cpu; | |
1340 | ||
1341 | if (idx > map->nr) | |
1342 | return -1; | |
1343 | ||
1344 | cpu = map->map[idx]; | |
1345 | ||
1346 | if (cpu >= env->nr_cpus_online) | |
1347 | return -1; | |
1348 | ||
1349 | return cpu; | |
1350 | } | |
1351 | ||
1352 | static int perf_env__get_socket(struct cpu_map *map, int idx, void *data) | |
1353 | { | |
1354 | struct perf_env *env = data; | |
1355 | int cpu = perf_env__get_cpu(env, map, idx); | |
1356 | ||
1357 | return cpu == -1 ? -1 : env->cpu[cpu].socket_id; | |
1358 | } | |
1359 | ||
1360 | static int perf_env__get_core(struct cpu_map *map, int idx, void *data) | |
1361 | { | |
1362 | struct perf_env *env = data; | |
1363 | int core = -1, cpu = perf_env__get_cpu(env, map, idx); | |
1364 | ||
1365 | if (cpu != -1) { | |
1366 | int socket_id = env->cpu[cpu].socket_id; | |
1367 | ||
1368 | /* | |
1369 | * Encode socket in upper 16 bits | |
1370 | * core_id is relative to socket, and | |
1371 | * we need a global id. So we combine | |
1372 | * socket + core id. | |
1373 | */ | |
1374 | core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff); | |
1375 | } | |
1376 | ||
1377 | return core; | |
1378 | } | |
1379 | ||
1380 | static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus, | |
1381 | struct cpu_map **sockp) | |
1382 | { | |
1383 | return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env); | |
1384 | } | |
1385 | ||
1386 | static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus, | |
1387 | struct cpu_map **corep) | |
1388 | { | |
1389 | return cpu_map__build_map(cpus, corep, perf_env__get_core, env); | |
1390 | } | |
1391 | ||
1392 | static int perf_stat__get_socket_file(struct cpu_map *map, int idx) | |
1393 | { | |
1394 | return perf_env__get_socket(map, idx, &perf_stat.session->header.env); | |
1395 | } | |
1396 | ||
1397 | static int perf_stat__get_core_file(struct cpu_map *map, int idx) | |
1398 | { | |
1399 | return perf_env__get_core(map, idx, &perf_stat.session->header.env); | |
1400 | } | |
1401 | ||
1402 | static int perf_stat_init_aggr_mode_file(struct perf_stat *st) | |
1403 | { | |
1404 | struct perf_env *env = &st->session->header.env; | |
1405 | ||
1406 | switch (stat_config.aggr_mode) { | |
1407 | case AGGR_SOCKET: | |
1408 | if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) { | |
1409 | perror("cannot build socket map"); | |
1410 | return -1; | |
1411 | } | |
1412 | aggr_get_id = perf_stat__get_socket_file; | |
1413 | break; | |
1414 | case AGGR_CORE: | |
1415 | if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) { | |
1416 | perror("cannot build core map"); | |
1417 | return -1; | |
1418 | } | |
1419 | aggr_get_id = perf_stat__get_core_file; | |
1420 | break; | |
1421 | case AGGR_NONE: | |
1422 | case AGGR_GLOBAL: | |
1423 | case AGGR_THREAD: | |
1424 | case AGGR_UNSET: | |
1425 | default: | |
1426 | break; | |
1427 | } | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | ||
2cba3ffb IM |
1432 | /* |
1433 | * Add default attributes, if there were no attributes specified or | |
1434 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1435 | */ | |
1436 | static int add_default_attributes(void) | |
1437 | { | |
b070a547 ACM |
1438 | struct perf_event_attr default_attrs[] = { |
1439 | ||
1440 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, | |
1441 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, | |
1442 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, | |
1443 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, | |
1444 | ||
1445 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, | |
1446 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, | |
1447 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, | |
1448 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, | |
1449 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, | |
1450 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, | |
1451 | ||
1452 | }; | |
1453 | ||
1454 | /* | |
1455 | * Detailed stats (-d), covering the L1 and last level data caches: | |
1456 | */ | |
1457 | struct perf_event_attr detailed_attrs[] = { | |
1458 | ||
1459 | { .type = PERF_TYPE_HW_CACHE, | |
1460 | .config = | |
1461 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1462 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1463 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1464 | ||
1465 | { .type = PERF_TYPE_HW_CACHE, | |
1466 | .config = | |
1467 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1468 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1469 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1470 | ||
1471 | { .type = PERF_TYPE_HW_CACHE, | |
1472 | .config = | |
1473 | PERF_COUNT_HW_CACHE_LL << 0 | | |
1474 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1475 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1476 | ||
1477 | { .type = PERF_TYPE_HW_CACHE, | |
1478 | .config = | |
1479 | PERF_COUNT_HW_CACHE_LL << 0 | | |
1480 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1481 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1482 | }; | |
1483 | ||
1484 | /* | |
1485 | * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: | |
1486 | */ | |
1487 | struct perf_event_attr very_detailed_attrs[] = { | |
1488 | ||
1489 | { .type = PERF_TYPE_HW_CACHE, | |
1490 | .config = | |
1491 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
1492 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1493 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1494 | ||
1495 | { .type = PERF_TYPE_HW_CACHE, | |
1496 | .config = | |
1497 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
1498 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1499 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1500 | ||
1501 | { .type = PERF_TYPE_HW_CACHE, | |
1502 | .config = | |
1503 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
1504 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1505 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1506 | ||
1507 | { .type = PERF_TYPE_HW_CACHE, | |
1508 | .config = | |
1509 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
1510 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1511 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1512 | ||
1513 | { .type = PERF_TYPE_HW_CACHE, | |
1514 | .config = | |
1515 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
1516 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1517 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1518 | ||
1519 | { .type = PERF_TYPE_HW_CACHE, | |
1520 | .config = | |
1521 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
1522 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1523 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1524 | ||
1525 | }; | |
1526 | ||
1527 | /* | |
1528 | * Very, very detailed stats (-d -d -d), adding prefetch events: | |
1529 | */ | |
1530 | struct perf_event_attr very_very_detailed_attrs[] = { | |
1531 | ||
1532 | { .type = PERF_TYPE_HW_CACHE, | |
1533 | .config = | |
1534 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1535 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
1536 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1537 | ||
1538 | { .type = PERF_TYPE_HW_CACHE, | |
1539 | .config = | |
1540 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1541 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
1542 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1543 | }; | |
1544 | ||
2cba3ffb IM |
1545 | /* Set attrs if no event is selected and !null_run: */ |
1546 | if (null_run) | |
1547 | return 0; | |
1548 | ||
4cabc3d1 AK |
1549 | if (transaction_run) { |
1550 | int err; | |
1551 | if (pmu_have_event("cpu", "cycles-ct") && | |
1552 | pmu_have_event("cpu", "el-start")) | |
a454742c | 1553 | err = parse_events(evsel_list, transaction_attrs, NULL); |
4cabc3d1 | 1554 | else |
a454742c JO |
1555 | err = parse_events(evsel_list, transaction_limited_attrs, NULL); |
1556 | if (err) { | |
4cabc3d1 AK |
1557 | fprintf(stderr, "Cannot set up transaction events\n"); |
1558 | return -1; | |
1559 | } | |
1560 | return 0; | |
1561 | } | |
1562 | ||
2cba3ffb | 1563 | if (!evsel_list->nr_entries) { |
79695e1b | 1564 | if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0) |
50d08e47 | 1565 | return -1; |
2cba3ffb IM |
1566 | } |
1567 | ||
1568 | /* Detailed events get appended to the event list: */ | |
1569 | ||
1570 | if (detailed_run < 1) | |
1571 | return 0; | |
1572 | ||
1573 | /* Append detailed run extra attributes: */ | |
79695e1b | 1574 | if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
50d08e47 | 1575 | return -1; |
2cba3ffb IM |
1576 | |
1577 | if (detailed_run < 2) | |
1578 | return 0; | |
1579 | ||
1580 | /* Append very detailed run extra attributes: */ | |
79695e1b | 1581 | if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
50d08e47 | 1582 | return -1; |
2cba3ffb IM |
1583 | |
1584 | if (detailed_run < 3) | |
1585 | return 0; | |
1586 | ||
1587 | /* Append very, very detailed run extra attributes: */ | |
79695e1b | 1588 | return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
2cba3ffb IM |
1589 | } |
1590 | ||
8a59f3cc | 1591 | static const char * const stat_record_usage[] = { |
4979d0c7 JO |
1592 | "perf stat record [<options>]", |
1593 | NULL, | |
1594 | }; | |
1595 | ||
3ba78bd0 JO |
1596 | static void init_features(struct perf_session *session) |
1597 | { | |
1598 | int feat; | |
1599 | ||
1600 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
1601 | perf_header__set_feat(&session->header, feat); | |
1602 | ||
1603 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); | |
1604 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); | |
1605 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
1606 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
1607 | } | |
1608 | ||
4979d0c7 JO |
1609 | static int __cmd_record(int argc, const char **argv) |
1610 | { | |
1611 | struct perf_session *session; | |
1612 | struct perf_data_file *file = &perf_stat.file; | |
1613 | ||
8a59f3cc | 1614 | argc = parse_options(argc, argv, stat_options, stat_record_usage, |
4979d0c7 JO |
1615 | PARSE_OPT_STOP_AT_NON_OPTION); |
1616 | ||
1617 | if (output_name) | |
1618 | file->path = output_name; | |
1619 | ||
e9d6db8e JO |
1620 | if (run_count != 1 || forever) { |
1621 | pr_err("Cannot use -r option with perf stat record.\n"); | |
1622 | return -1; | |
1623 | } | |
1624 | ||
4979d0c7 JO |
1625 | session = perf_session__new(file, false, NULL); |
1626 | if (session == NULL) { | |
1627 | pr_err("Perf session creation failed.\n"); | |
1628 | return -1; | |
1629 | } | |
1630 | ||
3ba78bd0 JO |
1631 | init_features(session); |
1632 | ||
4979d0c7 JO |
1633 | session->evlist = evsel_list; |
1634 | perf_stat.session = session; | |
1635 | perf_stat.record = true; | |
1636 | return argc; | |
1637 | } | |
1638 | ||
a56f9390 JO |
1639 | static int process_stat_round_event(struct perf_tool *tool __maybe_unused, |
1640 | union perf_event *event, | |
1641 | struct perf_session *session) | |
1642 | { | |
1643 | struct stat_round_event *round = &event->stat_round; | |
1644 | struct perf_evsel *counter; | |
1645 | struct timespec tsh, *ts = NULL; | |
1646 | const char **argv = session->header.env.cmdline_argv; | |
1647 | int argc = session->header.env.nr_cmdline; | |
1648 | ||
1649 | evlist__for_each(evsel_list, counter) | |
1650 | perf_stat_process_counter(&stat_config, counter); | |
1651 | ||
1652 | if (round->type == PERF_STAT_ROUND_TYPE__FINAL) | |
1653 | update_stats(&walltime_nsecs_stats, round->time); | |
1654 | ||
1655 | if (stat_config.interval && round->time) { | |
1656 | tsh.tv_sec = round->time / NSECS_PER_SEC; | |
1657 | tsh.tv_nsec = round->time % NSECS_PER_SEC; | |
1658 | ts = &tsh; | |
1659 | } | |
1660 | ||
1661 | print_counters(ts, argc, argv); | |
1662 | return 0; | |
1663 | } | |
1664 | ||
62ba18ba JO |
1665 | static |
1666 | int process_stat_config_event(struct perf_tool *tool __maybe_unused, | |
1667 | union perf_event *event, | |
1668 | struct perf_session *session __maybe_unused) | |
1669 | { | |
68d702f7 JO |
1670 | struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
1671 | ||
62ba18ba | 1672 | perf_event__read_stat_config(&stat_config, &event->stat_config); |
68d702f7 | 1673 | |
89af4e05 JO |
1674 | if (cpu_map__empty(st->cpus)) { |
1675 | if (st->aggr_mode != AGGR_UNSET) | |
1676 | pr_warning("warning: processing task data, aggregation mode not set\n"); | |
1677 | return 0; | |
1678 | } | |
1679 | ||
1680 | if (st->aggr_mode != AGGR_UNSET) | |
1681 | stat_config.aggr_mode = st->aggr_mode; | |
1682 | ||
68d702f7 JO |
1683 | if (perf_stat.file.is_pipe) |
1684 | perf_stat_init_aggr_mode(); | |
1685 | else | |
1686 | perf_stat_init_aggr_mode_file(st); | |
1687 | ||
62ba18ba JO |
1688 | return 0; |
1689 | } | |
1690 | ||
1975d36e JO |
1691 | static int set_maps(struct perf_stat *st) |
1692 | { | |
1693 | if (!st->cpus || !st->threads) | |
1694 | return 0; | |
1695 | ||
1696 | if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) | |
1697 | return -EINVAL; | |
1698 | ||
1699 | perf_evlist__set_maps(evsel_list, st->cpus, st->threads); | |
1700 | ||
1701 | if (perf_evlist__alloc_stats(evsel_list, true)) | |
1702 | return -ENOMEM; | |
1703 | ||
1704 | st->maps_allocated = true; | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | static | |
1709 | int process_thread_map_event(struct perf_tool *tool __maybe_unused, | |
1710 | union perf_event *event, | |
1711 | struct perf_session *session __maybe_unused) | |
1712 | { | |
1713 | struct perf_stat *st = container_of(tool, struct perf_stat, tool); | |
1714 | ||
1715 | if (st->threads) { | |
1716 | pr_warning("Extra thread map event, ignoring.\n"); | |
1717 | return 0; | |
1718 | } | |
1719 | ||
1720 | st->threads = thread_map__new_event(&event->thread_map); | |
1721 | if (!st->threads) | |
1722 | return -ENOMEM; | |
1723 | ||
1724 | return set_maps(st); | |
1725 | } | |
1726 | ||
1727 | static | |
1728 | int process_cpu_map_event(struct perf_tool *tool __maybe_unused, | |
1729 | union perf_event *event, | |
1730 | struct perf_session *session __maybe_unused) | |
1731 | { | |
1732 | struct perf_stat *st = container_of(tool, struct perf_stat, tool); | |
1733 | struct cpu_map *cpus; | |
1734 | ||
1735 | if (st->cpus) { | |
1736 | pr_warning("Extra cpu map event, ignoring.\n"); | |
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | cpus = cpu_map__new_data(&event->cpu_map.data); | |
1741 | if (!cpus) | |
1742 | return -ENOMEM; | |
1743 | ||
1744 | st->cpus = cpus; | |
1745 | return set_maps(st); | |
1746 | } | |
1747 | ||
8a59f3cc | 1748 | static const char * const stat_report_usage[] = { |
ba6039b6 JO |
1749 | "perf stat report [<options>]", |
1750 | NULL, | |
1751 | }; | |
1752 | ||
1753 | static struct perf_stat perf_stat = { | |
1754 | .tool = { | |
1755 | .attr = perf_event__process_attr, | |
fa6ea781 | 1756 | .event_update = perf_event__process_event_update, |
1975d36e JO |
1757 | .thread_map = process_thread_map_event, |
1758 | .cpu_map = process_cpu_map_event, | |
62ba18ba | 1759 | .stat_config = process_stat_config_event, |
a56f9390 JO |
1760 | .stat = perf_event__process_stat_event, |
1761 | .stat_round = process_stat_round_event, | |
ba6039b6 | 1762 | }, |
89af4e05 | 1763 | .aggr_mode = AGGR_UNSET, |
ba6039b6 JO |
1764 | }; |
1765 | ||
1766 | static int __cmd_report(int argc, const char **argv) | |
1767 | { | |
1768 | struct perf_session *session; | |
1769 | const struct option options[] = { | |
1770 | OPT_STRING('i', "input", &input_name, "file", "input file name"), | |
89af4e05 JO |
1771 | OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, |
1772 | "aggregate counts per processor socket", AGGR_SOCKET), | |
1773 | OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, | |
1774 | "aggregate counts per physical processor core", AGGR_CORE), | |
1775 | OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, | |
1776 | "disable CPU count aggregation", AGGR_NONE), | |
ba6039b6 JO |
1777 | OPT_END() |
1778 | }; | |
1779 | struct stat st; | |
1780 | int ret; | |
1781 | ||
8a59f3cc | 1782 | argc = parse_options(argc, argv, options, stat_report_usage, 0); |
ba6039b6 JO |
1783 | |
1784 | if (!input_name || !strlen(input_name)) { | |
1785 | if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
1786 | input_name = "-"; | |
1787 | else | |
1788 | input_name = "perf.data"; | |
1789 | } | |
1790 | ||
1791 | perf_stat.file.path = input_name; | |
1792 | perf_stat.file.mode = PERF_DATA_MODE_READ; | |
1793 | ||
1794 | session = perf_session__new(&perf_stat.file, false, &perf_stat.tool); | |
1795 | if (session == NULL) | |
1796 | return -1; | |
1797 | ||
1798 | perf_stat.session = session; | |
1799 | stat_config.output = stderr; | |
1800 | evsel_list = session->evlist; | |
1801 | ||
1802 | ret = perf_session__process_events(session); | |
1803 | if (ret) | |
1804 | return ret; | |
1805 | ||
1806 | perf_session__delete(session); | |
1807 | return 0; | |
1808 | } | |
1809 | ||
1d037ca1 | 1810 | int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) |
5242519b | 1811 | { |
b070a547 ACM |
1812 | const char * const stat_usage[] = { |
1813 | "perf stat [<options>] [<command>]", | |
1814 | NULL | |
1815 | }; | |
cc03c542 | 1816 | int status = -EINVAL, run_idx; |
4aa9015f | 1817 | const char *mode; |
5821522e | 1818 | FILE *output = stderr; |
ec0d3d1f | 1819 | unsigned int interval; |
ba6039b6 | 1820 | const char * const stat_subcommands[] = { "record", "report" }; |
42202dd5 | 1821 | |
5af52b51 SE |
1822 | setlocale(LC_ALL, ""); |
1823 | ||
334fe7a3 | 1824 | evsel_list = perf_evlist__new(); |
361c99a6 ACM |
1825 | if (evsel_list == NULL) |
1826 | return -ENOMEM; | |
1827 | ||
4979d0c7 JO |
1828 | argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, |
1829 | (const char **) stat_usage, | |
1830 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1831 | ||
6edb78a2 JO |
1832 | if (csv_sep) { |
1833 | csv_output = true; | |
1834 | if (!strcmp(csv_sep, "\\t")) | |
1835 | csv_sep = "\t"; | |
1836 | } else | |
1837 | csv_sep = DEFAULT_SEPARATOR; | |
1838 | ||
4979d0c7 JO |
1839 | if (argc && !strncmp(argv[0], "rec", 3)) { |
1840 | argc = __cmd_record(argc, argv); | |
1841 | if (argc < 0) | |
1842 | return -1; | |
ba6039b6 JO |
1843 | } else if (argc && !strncmp(argv[0], "rep", 3)) |
1844 | return __cmd_report(argc, argv); | |
d7470b6a | 1845 | |
ec0d3d1f JO |
1846 | interval = stat_config.interval; |
1847 | ||
4979d0c7 JO |
1848 | /* |
1849 | * For record command the -o is already taken care of. | |
1850 | */ | |
1851 | if (!STAT_RECORD && output_name && strcmp(output_name, "-")) | |
4aa9015f SE |
1852 | output = NULL; |
1853 | ||
56f3bae7 JC |
1854 | if (output_name && output_fd) { |
1855 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
e0547311 JO |
1856 | parse_options_usage(stat_usage, stat_options, "o", 1); |
1857 | parse_options_usage(NULL, stat_options, "log-fd", 0); | |
cc03c542 | 1858 | goto out; |
56f3bae7 | 1859 | } |
fc3e4d07 SE |
1860 | |
1861 | if (output_fd < 0) { | |
1862 | fprintf(stderr, "argument to --log-fd must be a > 0\n"); | |
e0547311 | 1863 | parse_options_usage(stat_usage, stat_options, "log-fd", 0); |
cc03c542 | 1864 | goto out; |
fc3e4d07 SE |
1865 | } |
1866 | ||
4aa9015f SE |
1867 | if (!output) { |
1868 | struct timespec tm; | |
1869 | mode = append_file ? "a" : "w"; | |
1870 | ||
1871 | output = fopen(output_name, mode); | |
1872 | if (!output) { | |
1873 | perror("failed to create output file"); | |
fceda7fe | 1874 | return -1; |
4aa9015f SE |
1875 | } |
1876 | clock_gettime(CLOCK_REALTIME, &tm); | |
1877 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
fc3e4d07 | 1878 | } else if (output_fd > 0) { |
56f3bae7 JC |
1879 | mode = append_file ? "a" : "w"; |
1880 | output = fdopen(output_fd, mode); | |
1881 | if (!output) { | |
1882 | perror("Failed opening logfd"); | |
1883 | return -errno; | |
1884 | } | |
4aa9015f SE |
1885 | } |
1886 | ||
5821522e JO |
1887 | stat_config.output = output; |
1888 | ||
d7470b6a SE |
1889 | /* |
1890 | * let the spreadsheet do the pretty-printing | |
1891 | */ | |
1892 | if (csv_output) { | |
61a9f324 | 1893 | /* User explicitly passed -B? */ |
d7470b6a SE |
1894 | if (big_num_opt == 1) { |
1895 | fprintf(stderr, "-B option not supported with -x\n"); | |
e0547311 JO |
1896 | parse_options_usage(stat_usage, stat_options, "B", 1); |
1897 | parse_options_usage(NULL, stat_options, "x", 1); | |
cc03c542 | 1898 | goto out; |
d7470b6a SE |
1899 | } else /* Nope, so disable big number formatting */ |
1900 | big_num = false; | |
1901 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1902 | big_num = false; | |
1903 | ||
602ad878 | 1904 | if (!argc && target__none(&target)) |
e0547311 | 1905 | usage_with_options(stat_usage, stat_options); |
ac3063bd | 1906 | |
a7e191c3 | 1907 | if (run_count < 0) { |
cc03c542 | 1908 | pr_err("Run count must be a positive number\n"); |
e0547311 | 1909 | parse_options_usage(stat_usage, stat_options, "r", 1); |
cc03c542 | 1910 | goto out; |
a7e191c3 FD |
1911 | } else if (run_count == 0) { |
1912 | forever = true; | |
1913 | run_count = 1; | |
1914 | } | |
ddcacfa0 | 1915 | |
421a50f3 | 1916 | if ((stat_config.aggr_mode == AGGR_THREAD) && !target__has_task(&target)) { |
32b8af82 JO |
1917 | fprintf(stderr, "The --per-thread option is only available " |
1918 | "when monitoring via -p -t options.\n"); | |
e0547311 JO |
1919 | parse_options_usage(NULL, stat_options, "p", 1); |
1920 | parse_options_usage(NULL, stat_options, "t", 1); | |
32b8af82 JO |
1921 | goto out; |
1922 | } | |
1923 | ||
1924 | /* | |
1925 | * no_aggr, cgroup are for system-wide only | |
1926 | * --per-thread is aggregated per thread, we dont mix it with cpu mode | |
1927 | */ | |
421a50f3 JO |
1928 | if (((stat_config.aggr_mode != AGGR_GLOBAL && |
1929 | stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) && | |
602ad878 | 1930 | !target__has_cpu(&target)) { |
023695d9 SE |
1931 | fprintf(stderr, "both cgroup and no-aggregation " |
1932 | "modes only available in system-wide mode\n"); | |
1933 | ||
e0547311 JO |
1934 | parse_options_usage(stat_usage, stat_options, "G", 1); |
1935 | parse_options_usage(NULL, stat_options, "A", 1); | |
1936 | parse_options_usage(NULL, stat_options, "a", 1); | |
cc03c542 | 1937 | goto out; |
d7e7a451 SE |
1938 | } |
1939 | ||
2cba3ffb IM |
1940 | if (add_default_attributes()) |
1941 | goto out; | |
ddcacfa0 | 1942 | |
602ad878 | 1943 | target__validate(&target); |
5c98d466 | 1944 | |
77a6f014 | 1945 | if (perf_evlist__create_maps(evsel_list, &target) < 0) { |
602ad878 | 1946 | if (target__has_task(&target)) { |
77a6f014 | 1947 | pr_err("Problems finding threads of monitor\n"); |
e0547311 JO |
1948 | parse_options_usage(stat_usage, stat_options, "p", 1); |
1949 | parse_options_usage(NULL, stat_options, "t", 1); | |
602ad878 | 1950 | } else if (target__has_cpu(&target)) { |
77a6f014 | 1951 | perror("failed to parse CPUs map"); |
e0547311 JO |
1952 | parse_options_usage(stat_usage, stat_options, "C", 1); |
1953 | parse_options_usage(NULL, stat_options, "a", 1); | |
cc03c542 NK |
1954 | } |
1955 | goto out; | |
60d567e2 | 1956 | } |
32b8af82 JO |
1957 | |
1958 | /* | |
1959 | * Initialize thread_map with comm names, | |
1960 | * so we could print it out on output. | |
1961 | */ | |
421a50f3 | 1962 | if (stat_config.aggr_mode == AGGR_THREAD) |
32b8af82 JO |
1963 | thread_map__read_comms(evsel_list->threads); |
1964 | ||
13370a9b | 1965 | if (interval && interval < 100) { |
19afd104 KL |
1966 | if (interval < 10) { |
1967 | pr_err("print interval must be >= 10ms\n"); | |
e0547311 | 1968 | parse_options_usage(stat_usage, stat_options, "I", 1); |
19afd104 KL |
1969 | goto out; |
1970 | } else | |
1971 | pr_warning("print interval < 100ms. " | |
1972 | "The overhead percentage could be high in some cases. " | |
1973 | "Please proceed with caution.\n"); | |
13370a9b | 1974 | } |
c45c6ea2 | 1975 | |
d134ffb9 | 1976 | if (perf_evlist__alloc_stats(evsel_list, interval)) |
03ad9747 | 1977 | goto out; |
d6d901c2 | 1978 | |
86ee6e18 | 1979 | if (perf_stat_init_aggr_mode()) |
03ad9747 | 1980 | goto out; |
86ee6e18 | 1981 | |
58d7e993 IM |
1982 | /* |
1983 | * We dont want to block the signals - that would cause | |
1984 | * child tasks to inherit that and Ctrl-C would not work. | |
1985 | * What we want is for Ctrl-C to work in the exec()-ed | |
1986 | * task, but being ignored by perf stat itself: | |
1987 | */ | |
f7b7c26e | 1988 | atexit(sig_atexit); |
a7e191c3 FD |
1989 | if (!forever) |
1990 | signal(SIGINT, skip_signal); | |
13370a9b | 1991 | signal(SIGCHLD, skip_signal); |
58d7e993 IM |
1992 | signal(SIGALRM, skip_signal); |
1993 | signal(SIGABRT, skip_signal); | |
1994 | ||
42202dd5 | 1995 | status = 0; |
a7e191c3 | 1996 | for (run_idx = 0; forever || run_idx < run_count; run_idx++) { |
42202dd5 | 1997 | if (run_count != 1 && verbose) |
4aa9015f SE |
1998 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1999 | run_idx + 1); | |
f9cef0a9 | 2000 | |
42202dd5 | 2001 | status = run_perf_stat(argc, argv); |
a7e191c3 | 2002 | if (forever && status != -1) { |
d4f63a47 | 2003 | print_counters(NULL, argc, argv); |
254ecbc7 | 2004 | perf_stat__reset_stats(); |
a7e191c3 | 2005 | } |
42202dd5 IM |
2006 | } |
2007 | ||
a7e191c3 | 2008 | if (!forever && status != -1 && !interval) |
d4f63a47 | 2009 | print_counters(NULL, argc, argv); |
d134ffb9 | 2010 | |
4979d0c7 JO |
2011 | if (STAT_RECORD) { |
2012 | /* | |
2013 | * We synthesize the kernel mmap record just so that older tools | |
2014 | * don't emit warnings about not being able to resolve symbols | |
2015 | * due to /proc/sys/kernel/kptr_restrict settings and instear provide | |
2016 | * a saner message about no samples being in the perf.data file. | |
2017 | * | |
2018 | * This also serves to suppress a warning about f_header.data.size == 0 | |
8b99b1a4 JO |
2019 | * in header.c at the moment 'perf stat record' gets introduced, which |
2020 | * is not really needed once we start adding the stat specific PERF_RECORD_ | |
2021 | * records, but the need to suppress the kptr_restrict messages in older | |
2022 | * tools remain -acme | |
4979d0c7 JO |
2023 | */ |
2024 | int fd = perf_data_file__fd(&perf_stat.file); | |
2025 | int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, | |
2026 | process_synthesized_event, | |
2027 | &perf_stat.session->machines.host); | |
2028 | if (err) { | |
2029 | pr_warning("Couldn't synthesize the kernel mmap record, harmless, " | |
2030 | "older tools may produce warnings about this file\n."); | |
2031 | } | |
2032 | ||
7aad0c32 JO |
2033 | if (!interval) { |
2034 | if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) | |
2035 | pr_err("failed to write stat round event\n"); | |
2036 | } | |
2037 | ||
664c98d4 JO |
2038 | if (!perf_stat.file.is_pipe) { |
2039 | perf_stat.session->header.data_size += perf_stat.bytes_written; | |
2040 | perf_session__write_header(perf_stat.session, evsel_list, fd, true); | |
2041 | } | |
4979d0c7 JO |
2042 | |
2043 | perf_session__delete(perf_stat.session); | |
2044 | } | |
2045 | ||
544c2ae7 | 2046 | perf_stat__exit_aggr_mode(); |
d134ffb9 | 2047 | perf_evlist__free_stats(evsel_list); |
0015e2e1 ACM |
2048 | out: |
2049 | perf_evlist__delete(evsel_list); | |
42202dd5 | 2050 | return status; |
ddcacfa0 | 2051 | } |