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Commit | Line | Data |
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91007045 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
ddcacfa0 | 2 | /* |
bf9e1876 IM |
3 | * builtin-stat.c |
4 | * | |
5 | * Builtin stat command: Give a precise performance counters summary | |
6 | * overview about any workload, CPU or specific PID. | |
7 | * | |
8 | * Sample output: | |
ddcacfa0 | 9 | |
2cba3ffb | 10 | $ perf stat ./hackbench 10 |
ddcacfa0 | 11 | |
2cba3ffb | 12 | Time: 0.118 |
ddcacfa0 | 13 | |
2cba3ffb | 14 | Performance counter stats for './hackbench 10': |
ddcacfa0 | 15 | |
2cba3ffb IM |
16 | 1708.761321 task-clock # 11.037 CPUs utilized |
17 | 41,190 context-switches # 0.024 M/sec | |
18 | 6,735 CPU-migrations # 0.004 M/sec | |
19 | 17,318 page-faults # 0.010 M/sec | |
20 | 5,205,202,243 cycles # 3.046 GHz | |
21 | 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle | |
22 | 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle | |
23 | 2,603,501,247 instructions # 0.50 insns per cycle | |
24 | # 1.48 stalled cycles per insn | |
25 | 484,357,498 branches # 283.455 M/sec | |
26 | 6,388,934 branch-misses # 1.32% of all branches | |
27 | ||
28 | 0.154822978 seconds time elapsed | |
ddcacfa0 | 29 | |
5242519b | 30 | * |
2cba3ffb | 31 | * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
5242519b IM |
32 | * |
33 | * Improvements and fixes by: | |
34 | * | |
35 | * Arjan van de Ven <arjan@linux.intel.com> | |
36 | * Yanmin Zhang <yanmin.zhang@intel.com> | |
37 | * Wu Fengguang <fengguang.wu@intel.com> | |
38 | * Mike Galbraith <efault@gmx.de> | |
39 | * Paul Mackerras <paulus@samba.org> | |
6e750a8f | 40 | * Jaswinder Singh Rajput <jaswinder@kernel.org> |
ddcacfa0 IM |
41 | */ |
42 | ||
16f762a2 | 43 | #include "builtin.h" |
f14d5707 | 44 | #include "util/cgroup.h" |
4b6ab94e | 45 | #include <subcmd/parse-options.h> |
5242519b | 46 | #include "util/parse-events.h" |
4cabc3d1 | 47 | #include "util/pmu.h" |
8f28827a | 48 | #include "util/event.h" |
361c99a6 | 49 | #include "util/evlist.h" |
69aad6f1 | 50 | #include "util/evsel.h" |
8f28827a | 51 | #include "util/debug.h" |
a5d243d0 | 52 | #include "util/color.h" |
0007ecea | 53 | #include "util/stat.h" |
60666c63 | 54 | #include "util/header.h" |
a12b51c4 | 55 | #include "util/cpumap.h" |
d6d901c2 | 56 | #include "util/thread.h" |
fd78260b | 57 | #include "util/thread_map.h" |
d809560b | 58 | #include "util/counts.h" |
44b1e60a | 59 | #include "util/group.h" |
4979d0c7 | 60 | #include "util/session.h" |
ba6039b6 | 61 | #include "util/tool.h" |
a067558e | 62 | #include "util/string2.h" |
b18f3e36 | 63 | #include "util/metricgroup.h" |
aeb00b1a | 64 | #include "util/target.h" |
9660e08e | 65 | #include "util/top.h" |
ba6039b6 | 66 | #include "asm/bug.h" |
ddcacfa0 | 67 | |
bd48c63e | 68 | #include <linux/time64.h> |
7f7c536f | 69 | #include <linux/zalloc.h> |
44b1e60a | 70 | #include <api/fs/fs.h> |
a43783ae | 71 | #include <errno.h> |
9607ad3a | 72 | #include <signal.h> |
1f16c575 | 73 | #include <stdlib.h> |
ddcacfa0 | 74 | #include <sys/prctl.h> |
fd20e811 | 75 | #include <inttypes.h> |
5af52b51 | 76 | #include <locale.h> |
e3b03b6c | 77 | #include <math.h> |
7a8ef4c4 ACM |
78 | #include <sys/types.h> |
79 | #include <sys/stat.h> | |
4208735d | 80 | #include <sys/wait.h> |
7a8ef4c4 | 81 | #include <unistd.h> |
0ce2da14 JO |
82 | #include <sys/time.h> |
83 | #include <sys/resource.h> | |
16c8a109 | 84 | |
3052ba56 | 85 | #include <linux/ctype.h> |
453fa030 | 86 | #include <perf/evlist.h> |
3d689ed6 | 87 | |
d7470b6a | 88 | #define DEFAULT_SEPARATOR " " |
daefd0bc | 89 | #define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi" |
d7470b6a | 90 | |
d4f63a47 | 91 | static void print_counters(struct timespec *ts, int argc, const char **argv); |
13370a9b | 92 | |
4cabc3d1 | 93 | /* Default events used for perf stat -T */ |
a454742c JO |
94 | static const char *transaction_attrs = { |
95 | "task-clock," | |
4cabc3d1 AK |
96 | "{" |
97 | "instructions," | |
98 | "cycles," | |
99 | "cpu/cycles-t/," | |
100 | "cpu/tx-start/," | |
101 | "cpu/el-start/," | |
102 | "cpu/cycles-ct/" | |
103 | "}" | |
104 | }; | |
105 | ||
106 | /* More limited version when the CPU does not have all events. */ | |
a454742c JO |
107 | static const char * transaction_limited_attrs = { |
108 | "task-clock," | |
4cabc3d1 AK |
109 | "{" |
110 | "instructions," | |
111 | "cycles," | |
112 | "cpu/cycles-t/," | |
113 | "cpu/tx-start/" | |
114 | "}" | |
115 | }; | |
116 | ||
44b1e60a AK |
117 | static const char * topdown_attrs[] = { |
118 | "topdown-total-slots", | |
119 | "topdown-slots-retired", | |
120 | "topdown-recovery-bubbles", | |
121 | "topdown-fetch-bubbles", | |
122 | "topdown-slots-issued", | |
123 | NULL, | |
124 | }; | |
125 | ||
daefd0bc KL |
126 | static const char *smi_cost_attrs = { |
127 | "{" | |
128 | "msr/aperf/," | |
129 | "msr/smi/," | |
130 | "cycles" | |
131 | "}" | |
132 | }; | |
133 | ||
63503dba | 134 | static struct evlist *evsel_list; |
361c99a6 | 135 | |
602ad878 | 136 | static struct target target = { |
77a6f014 NK |
137 | .uid = UINT_MAX, |
138 | }; | |
ddcacfa0 | 139 | |
c1a1f5d9 JO |
140 | #define METRIC_ONLY_LEN 20 |
141 | ||
d07f0b12 | 142 | static volatile pid_t child_pid = -1; |
2cba3ffb | 143 | static int detailed_run = 0; |
4cabc3d1 | 144 | static bool transaction_run; |
44b1e60a | 145 | static bool topdown_run = false; |
daefd0bc KL |
146 | static bool smi_cost = false; |
147 | static bool smi_reset = false; | |
d7470b6a | 148 | static int big_num_opt = -1; |
43bece79 | 149 | static bool group = false; |
1f16c575 PZ |
150 | static const char *pre_cmd = NULL; |
151 | static const char *post_cmd = NULL; | |
152 | static bool sync_run = false; | |
a7e191c3 | 153 | static bool forever = false; |
44b1e60a | 154 | static bool force_metric_only = false; |
13370a9b | 155 | static struct timespec ref_time; |
e0547311 | 156 | static bool append_file; |
db06a269 | 157 | static bool interval_count; |
e0547311 JO |
158 | static const char *output_name; |
159 | static int output_fd; | |
5af52b51 | 160 | |
4979d0c7 JO |
161 | struct perf_stat { |
162 | bool record; | |
8ceb41d7 | 163 | struct perf_data data; |
4979d0c7 JO |
164 | struct perf_session *session; |
165 | u64 bytes_written; | |
ba6039b6 | 166 | struct perf_tool tool; |
1975d36e | 167 | bool maps_allocated; |
f854839b | 168 | struct perf_cpu_map *cpus; |
9749b90e | 169 | struct perf_thread_map *threads; |
89af4e05 | 170 | enum aggr_mode aggr_mode; |
4979d0c7 JO |
171 | }; |
172 | ||
173 | static struct perf_stat perf_stat; | |
174 | #define STAT_RECORD perf_stat.record | |
175 | ||
60666c63 LW |
176 | static volatile int done = 0; |
177 | ||
421a50f3 | 178 | static struct perf_stat_config stat_config = { |
26893a60 JO |
179 | .aggr_mode = AGGR_GLOBAL, |
180 | .scale = true, | |
181 | .unit_width = 4, /* strlen("unit") */ | |
182 | .run_count = 1, | |
183 | .metric_only_len = METRIC_ONLY_LEN, | |
184 | .walltime_nsecs_stats = &walltime_nsecs_stats, | |
34ff0866 | 185 | .big_num = true, |
421a50f3 JO |
186 | }; |
187 | ||
13370a9b SE |
188 | static inline void diff_timespec(struct timespec *r, struct timespec *a, |
189 | struct timespec *b) | |
190 | { | |
191 | r->tv_sec = a->tv_sec - b->tv_sec; | |
192 | if (a->tv_nsec < b->tv_nsec) { | |
310ebb93 | 193 | r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; |
13370a9b SE |
194 | r->tv_sec--; |
195 | } else { | |
196 | r->tv_nsec = a->tv_nsec - b->tv_nsec ; | |
197 | } | |
198 | } | |
199 | ||
254ecbc7 JO |
200 | static void perf_stat__reset_stats(void) |
201 | { | |
56739444 JY |
202 | int i; |
203 | ||
254ecbc7 | 204 | perf_evlist__reset_stats(evsel_list); |
f87027b9 | 205 | perf_stat__reset_shadow_stats(); |
56739444 JY |
206 | |
207 | for (i = 0; i < stat_config.stats_num; i++) | |
208 | perf_stat__reset_shadow_per_stat(&stat_config.stats[i]); | |
1eda3b21 JO |
209 | } |
210 | ||
8b99b1a4 JO |
211 | static int process_synthesized_event(struct perf_tool *tool __maybe_unused, |
212 | union perf_event *event, | |
213 | struct perf_sample *sample __maybe_unused, | |
214 | struct machine *machine __maybe_unused) | |
4979d0c7 | 215 | { |
8ceb41d7 | 216 | if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { |
4979d0c7 JO |
217 | pr_err("failed to write perf data, error: %m\n"); |
218 | return -1; | |
219 | } | |
220 | ||
8b99b1a4 | 221 | perf_stat.bytes_written += event->header.size; |
4979d0c7 JO |
222 | return 0; |
223 | } | |
224 | ||
1975d36e | 225 | static int write_stat_round_event(u64 tm, u64 type) |
7aad0c32 | 226 | { |
1975d36e | 227 | return perf_event__synthesize_stat_round(NULL, tm, type, |
7aad0c32 JO |
228 | process_synthesized_event, |
229 | NULL); | |
230 | } | |
231 | ||
232 | #define WRITE_STAT_ROUND_EVENT(time, interval) \ | |
233 | write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) | |
234 | ||
5a6ea81b JO |
235 | #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) |
236 | ||
237 | static int | |
32dcd021 | 238 | perf_evsel__write_stat_event(struct evsel *counter, u32 cpu, u32 thread, |
5a6ea81b JO |
239 | struct perf_counts_values *count) |
240 | { | |
241 | struct perf_sample_id *sid = SID(counter, cpu, thread); | |
242 | ||
243 | return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, | |
244 | process_synthesized_event, NULL); | |
245 | } | |
246 | ||
32dcd021 | 247 | static int read_single_counter(struct evsel *counter, int cpu, |
f0fbb114 AK |
248 | int thread, struct timespec *rs) |
249 | { | |
250 | if (counter->tool_event == PERF_TOOL_DURATION_TIME) { | |
251 | u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL; | |
252 | struct perf_counts_values *count = | |
253 | perf_counts(counter->counts, cpu, thread); | |
254 | count->ena = count->run = val; | |
255 | count->val = val; | |
256 | return 0; | |
257 | } | |
258 | return perf_evsel__read_counter(counter, cpu, thread); | |
259 | } | |
260 | ||
f5b4a9c3 SE |
261 | /* |
262 | * Read out the results of a single counter: | |
263 | * do not aggregate counts across CPUs in system-wide mode | |
264 | */ | |
32dcd021 | 265 | static int read_counter(struct evsel *counter, struct timespec *rs) |
f5b4a9c3 | 266 | { |
a2f354e3 | 267 | int nthreads = perf_thread_map__nr(evsel_list->core.threads); |
00e727bb MR |
268 | int ncpus, cpu, thread; |
269 | ||
1d9f8d1b | 270 | if (target__has_cpu(&target) && !target__has_per_thread(&target)) |
00e727bb MR |
271 | ncpus = perf_evsel__nr_cpus(counter); |
272 | else | |
273 | ncpus = 1; | |
f5b4a9c3 | 274 | |
3b4331d9 SP |
275 | if (!counter->supported) |
276 | return -ENOENT; | |
277 | ||
9bf1a529 JO |
278 | if (counter->system_wide) |
279 | nthreads = 1; | |
280 | ||
281 | for (thread = 0; thread < nthreads; thread++) { | |
282 | for (cpu = 0; cpu < ncpus; cpu++) { | |
3b3eb044 JO |
283 | struct perf_counts_values *count; |
284 | ||
285 | count = perf_counts(counter->counts, cpu, thread); | |
82bf311e JO |
286 | |
287 | /* | |
288 | * The leader's group read loads data into its group members | |
289 | * (via perf_evsel__read_counter) and sets threir count->loaded. | |
290 | */ | |
df1d6856 | 291 | if (!perf_counts__is_loaded(counter->counts, cpu, thread) && |
f0fbb114 | 292 | read_single_counter(counter, cpu, thread, rs)) { |
db49a717 SE |
293 | counter->counts->scaled = -1; |
294 | perf_counts(counter->counts, cpu, thread)->ena = 0; | |
295 | perf_counts(counter->counts, cpu, thread)->run = 0; | |
9bf1a529 | 296 | return -1; |
db49a717 | 297 | } |
5a6ea81b | 298 | |
df1d6856 | 299 | perf_counts__set_loaded(counter->counts, cpu, thread, false); |
82bf311e | 300 | |
5a6ea81b JO |
301 | if (STAT_RECORD) { |
302 | if (perf_evsel__write_stat_event(counter, cpu, thread, count)) { | |
303 | pr_err("failed to write stat event\n"); | |
304 | return -1; | |
305 | } | |
306 | } | |
0b1abbf4 AK |
307 | |
308 | if (verbose > 1) { | |
309 | fprintf(stat_config.output, | |
310 | "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", | |
311 | perf_evsel__name(counter), | |
312 | cpu, | |
313 | count->val, count->ena, count->run); | |
314 | } | |
9bf1a529 | 315 | } |
f5b4a9c3 | 316 | } |
c52b12ed ACM |
317 | |
318 | return 0; | |
2996f5dd IM |
319 | } |
320 | ||
f0fbb114 | 321 | static void read_counters(struct timespec *rs) |
13370a9b | 322 | { |
32dcd021 | 323 | struct evsel *counter; |
db49a717 | 324 | int ret; |
13370a9b | 325 | |
e5cadb93 | 326 | evlist__for_each_entry(evsel_list, counter) { |
f0fbb114 | 327 | ret = read_counter(counter, rs); |
db49a717 | 328 | if (ret) |
245bad8e | 329 | pr_debug("failed to read counter %s\n", counter->name); |
3b3eb044 | 330 | |
db49a717 | 331 | if (ret == 0 && perf_stat_process_counter(&stat_config, counter)) |
3b3eb044 | 332 | pr_warning("failed to process counter %s\n", counter->name); |
13370a9b | 333 | } |
106a94a0 JO |
334 | } |
335 | ||
ba411a95 | 336 | static void process_interval(void) |
106a94a0 | 337 | { |
106a94a0 | 338 | struct timespec ts, rs; |
106a94a0 | 339 | |
13370a9b SE |
340 | clock_gettime(CLOCK_MONOTONIC, &ts); |
341 | diff_timespec(&rs, &ts, &ref_time); | |
13370a9b | 342 | |
f0fbb114 AK |
343 | read_counters(&rs); |
344 | ||
7aad0c32 | 345 | if (STAT_RECORD) { |
bd48c63e | 346 | if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) |
7aad0c32 JO |
347 | pr_err("failed to write stat round event\n"); |
348 | } | |
349 | ||
b90f1333 AK |
350 | init_stats(&walltime_nsecs_stats); |
351 | update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000); | |
d4f63a47 | 352 | print_counters(&rs, 0, NULL); |
13370a9b SE |
353 | } |
354 | ||
67ccdecd | 355 | static void enable_counters(void) |
41191688 | 356 | { |
728c0ee0 JO |
357 | if (stat_config.initial_delay) |
358 | usleep(stat_config.initial_delay * USEC_PER_MSEC); | |
67ccdecd JO |
359 | |
360 | /* | |
361 | * We need to enable counters only if: | |
362 | * - we don't have tracee (attaching to task or cpu) | |
363 | * - we have initial delay configured | |
364 | */ | |
728c0ee0 | 365 | if (!target__none(&target) || stat_config.initial_delay) |
1c87f165 | 366 | evlist__enable(evsel_list); |
41191688 AK |
367 | } |
368 | ||
3df33eff MR |
369 | static void disable_counters(void) |
370 | { | |
371 | /* | |
372 | * If we don't have tracee (attaching to task or cpu), counters may | |
373 | * still be running. To get accurate group ratios, we must stop groups | |
374 | * from counting before reading their constituent counters. | |
375 | */ | |
376 | if (!target__none(&target)) | |
e74676de | 377 | evlist__disable(evsel_list); |
3df33eff MR |
378 | } |
379 | ||
f33cbe72 | 380 | static volatile int workload_exec_errno; |
6af206fd ACM |
381 | |
382 | /* | |
383 | * perf_evlist__prepare_workload will send a SIGUSR1 | |
384 | * if the fork fails, since we asked by setting its | |
385 | * want_signal to true. | |
386 | */ | |
f33cbe72 ACM |
387 | static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, |
388 | void *ucontext __maybe_unused) | |
6af206fd | 389 | { |
f33cbe72 | 390 | workload_exec_errno = info->si_value.sival_int; |
6af206fd ACM |
391 | } |
392 | ||
32dcd021 | 393 | static bool perf_evsel__should_store_id(struct evsel *counter) |
82bf311e | 394 | { |
1fc632ce | 395 | return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; |
82bf311e JO |
396 | } |
397 | ||
cbb5df7e | 398 | static bool is_target_alive(struct target *_target, |
9749b90e | 399 | struct perf_thread_map *threads) |
cbb5df7e JO |
400 | { |
401 | struct stat st; | |
402 | int i; | |
403 | ||
404 | if (!target__has_task(_target)) | |
405 | return true; | |
406 | ||
407 | for (i = 0; i < threads->nr; i++) { | |
408 | char path[PATH_MAX]; | |
409 | ||
410 | scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), | |
411 | threads->map[i].pid); | |
412 | ||
413 | if (!stat(path, &st)) | |
414 | return true; | |
415 | } | |
416 | ||
417 | return false; | |
418 | } | |
419 | ||
e55c14af | 420 | static int __run_perf_stat(int argc, const char **argv, int run_idx) |
42202dd5 | 421 | { |
ec0d3d1f | 422 | int interval = stat_config.interval; |
db06a269 | 423 | int times = stat_config.times; |
f1f8ad52 | 424 | int timeout = stat_config.timeout; |
d6195a6a | 425 | char msg[BUFSIZ]; |
42202dd5 | 426 | unsigned long long t0, t1; |
32dcd021 | 427 | struct evsel *counter; |
13370a9b | 428 | struct timespec ts; |
410136f5 | 429 | size_t l; |
42202dd5 | 430 | int status = 0; |
6be2850e | 431 | const bool forks = (argc > 0); |
8ceb41d7 | 432 | bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; |
42202dd5 | 433 | |
13370a9b | 434 | if (interval) { |
310ebb93 ACM |
435 | ts.tv_sec = interval / USEC_PER_MSEC; |
436 | ts.tv_nsec = (interval % USEC_PER_MSEC) * NSEC_PER_MSEC; | |
f1f8ad52 | 437 | } else if (timeout) { |
438 | ts.tv_sec = timeout / USEC_PER_MSEC; | |
439 | ts.tv_nsec = (timeout % USEC_PER_MSEC) * NSEC_PER_MSEC; | |
13370a9b SE |
440 | } else { |
441 | ts.tv_sec = 1; | |
442 | ts.tv_nsec = 0; | |
443 | } | |
444 | ||
60666c63 | 445 | if (forks) { |
664c98d4 | 446 | if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe, |
735f7e0b | 447 | workload_exec_failed_signal) < 0) { |
acf28922 NK |
448 | perror("failed to prepare workload"); |
449 | return -1; | |
60666c63 | 450 | } |
d20a47e7 | 451 | child_pid = evsel_list->workload.pid; |
051ae7f7 PM |
452 | } |
453 | ||
6a4bb04c | 454 | if (group) |
63dab225 | 455 | perf_evlist__set_leader(evsel_list); |
6a4bb04c | 456 | |
e5cadb93 | 457 | evlist__for_each_entry(evsel_list, counter) { |
42ef8a78 | 458 | try_again: |
d09cefd2 | 459 | if (create_perf_stat_counter(counter, &stat_config, &target) < 0) { |
5a5dfe4b AK |
460 | |
461 | /* Weak group failed. Reset the group. */ | |
35c1980e | 462 | if ((errno == EINVAL || errno == EBADF) && |
5a5dfe4b AK |
463 | counter->leader != counter && |
464 | counter->weak_group) { | |
c3537fc2 | 465 | counter = perf_evlist__reset_weak_group(evsel_list, counter); |
5a5dfe4b AK |
466 | goto try_again; |
467 | } | |
468 | ||
979987a5 DA |
469 | /* |
470 | * PPC returns ENXIO for HW counters until 2.6.37 | |
471 | * (behavior changed with commit b0a873e). | |
472 | */ | |
38f6ae1e | 473 | if (errno == EINVAL || errno == ENOSYS || |
979987a5 DA |
474 | errno == ENOENT || errno == EOPNOTSUPP || |
475 | errno == ENXIO) { | |
bb963e16 | 476 | if (verbose > 0) |
c63ca0c0 | 477 | ui__warning("%s event is not supported by the kernel.\n", |
7289f83c | 478 | perf_evsel__name(counter)); |
2cee77c4 | 479 | counter->supported = false; |
cb5ef600 KL |
480 | |
481 | if ((counter->leader != counter) || | |
5643b1a5 | 482 | !(counter->leader->core.nr_members > 1)) |
cb5ef600 | 483 | continue; |
42ef8a78 | 484 | } else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) { |
bb963e16 | 485 | if (verbose > 0) |
42ef8a78 ACM |
486 | ui__warning("%s\n", msg); |
487 | goto try_again; | |
ab6c79b8 | 488 | } else if (target__has_per_thread(&target) && |
03617c22 JO |
489 | evsel_list->core.threads && |
490 | evsel_list->core.threads->err_thread != -1) { | |
ab6c79b8 JY |
491 | /* |
492 | * For global --per-thread case, skip current | |
493 | * error thread. | |
494 | */ | |
03617c22 JO |
495 | if (!thread_map__remove(evsel_list->core.threads, |
496 | evsel_list->core.threads->err_thread)) { | |
497 | evsel_list->core.threads->err_thread = -1; | |
ab6c79b8 JY |
498 | goto try_again; |
499 | } | |
500 | } | |
ede70290 | 501 | |
56e52e85 ACM |
502 | perf_evsel__open_strerror(counter, &target, |
503 | errno, msg, sizeof(msg)); | |
504 | ui__error("%s\n", msg); | |
505 | ||
48290609 ACM |
506 | if (child_pid != -1) |
507 | kill(child_pid, SIGTERM); | |
fceda7fe | 508 | |
48290609 ACM |
509 | return -1; |
510 | } | |
2cee77c4 | 511 | counter->supported = true; |
410136f5 SE |
512 | |
513 | l = strlen(counter->unit); | |
df4f7b4d JO |
514 | if (l > stat_config.unit_width) |
515 | stat_config.unit_width = l; | |
2af4646d | 516 | |
82bf311e | 517 | if (perf_evsel__should_store_id(counter) && |
650d6220 | 518 | perf_evsel__store_ids(counter, evsel_list)) |
2af4646d | 519 | return -1; |
084ab9f8 | 520 | } |
42202dd5 | 521 | |
23d4aad4 | 522 | if (perf_evlist__apply_filters(evsel_list, &counter)) { |
62d94b00 | 523 | pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
23d4aad4 | 524 | counter->filter, perf_evsel__name(counter), errno, |
c8b5f2c9 | 525 | str_error_r(errno, msg, sizeof(msg))); |
cfd748ae FW |
526 | return -1; |
527 | } | |
528 | ||
4979d0c7 | 529 | if (STAT_RECORD) { |
8ceb41d7 | 530 | int err, fd = perf_data__fd(&perf_stat.data); |
4979d0c7 | 531 | |
664c98d4 | 532 | if (is_pipe) { |
8ceb41d7 | 533 | err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); |
664c98d4 JO |
534 | } else { |
535 | err = perf_session__write_header(perf_stat.session, evsel_list, | |
536 | fd, false); | |
537 | } | |
538 | ||
4979d0c7 JO |
539 | if (err < 0) |
540 | return err; | |
8b99b1a4 | 541 | |
1c21e989 | 542 | err = perf_stat_synthesize_config(&stat_config, NULL, evsel_list, |
c2c247f2 | 543 | process_synthesized_event, is_pipe); |
8b99b1a4 JO |
544 | if (err < 0) |
545 | return err; | |
4979d0c7 JO |
546 | } |
547 | ||
42202dd5 IM |
548 | /* |
549 | * Enable counters and exec the command: | |
550 | */ | |
551 | t0 = rdclock(); | |
13370a9b | 552 | clock_gettime(CLOCK_MONOTONIC, &ref_time); |
42202dd5 | 553 | |
60666c63 | 554 | if (forks) { |
acf28922 | 555 | perf_evlist__start_workload(evsel_list); |
67ccdecd | 556 | enable_counters(); |
acf28922 | 557 | |
f1f8ad52 | 558 | if (interval || timeout) { |
13370a9b SE |
559 | while (!waitpid(child_pid, &status, WNOHANG)) { |
560 | nanosleep(&ts, NULL); | |
f1f8ad52 | 561 | if (timeout) |
562 | break; | |
ba411a95 | 563 | process_interval(); |
db06a269 | 564 | if (interval_count && !(--times)) |
565 | break; | |
13370a9b SE |
566 | } |
567 | } | |
8a99255a JY |
568 | if (child_pid != -1) |
569 | wait4(child_pid, &status, 0, &stat_config.ru_data); | |
6af206fd | 570 | |
f33cbe72 | 571 | if (workload_exec_errno) { |
c8b5f2c9 | 572 | const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
f33cbe72 | 573 | pr_err("Workload failed: %s\n", emsg); |
6af206fd | 574 | return -1; |
f33cbe72 | 575 | } |
6af206fd | 576 | |
33e49ea7 AK |
577 | if (WIFSIGNALED(status)) |
578 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 579 | } else { |
67ccdecd | 580 | enable_counters(); |
13370a9b SE |
581 | while (!done) { |
582 | nanosleep(&ts, NULL); | |
03617c22 | 583 | if (!is_target_alive(&target, evsel_list->core.threads)) |
cbb5df7e | 584 | break; |
f1f8ad52 | 585 | if (timeout) |
586 | break; | |
db06a269 | 587 | if (interval) { |
ba411a95 | 588 | process_interval(); |
db06a269 | 589 | if (interval_count && !(--times)) |
590 | break; | |
591 | } | |
13370a9b | 592 | } |
60666c63 | 593 | } |
42202dd5 | 594 | |
3df33eff MR |
595 | disable_counters(); |
596 | ||
42202dd5 IM |
597 | t1 = rdclock(); |
598 | ||
54ac0b1b JO |
599 | if (stat_config.walltime_run_table) |
600 | stat_config.walltime_run[run_idx] = t1 - t0; | |
e55c14af | 601 | |
9e9772c4 | 602 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 603 | |
3df33eff MR |
604 | /* |
605 | * Closing a group leader splits the group, and as we only disable | |
606 | * group leaders, results in remaining events becoming enabled. To | |
607 | * avoid arbitrary skew, we must read all counters before closing any | |
608 | * group leaders. | |
609 | */ | |
f0fbb114 | 610 | read_counters(&(struct timespec) { .tv_nsec = t1-t0 }); |
08ef3af1 JO |
611 | |
612 | /* | |
613 | * We need to keep evsel_list alive, because it's processed | |
614 | * later the evsel_list will be closed after. | |
615 | */ | |
616 | if (!STAT_RECORD) | |
750b4ede | 617 | evlist__close(evsel_list); |
c52b12ed | 618 | |
42202dd5 IM |
619 | return WEXITSTATUS(status); |
620 | } | |
621 | ||
e55c14af | 622 | static int run_perf_stat(int argc, const char **argv, int run_idx) |
1f16c575 PZ |
623 | { |
624 | int ret; | |
625 | ||
626 | if (pre_cmd) { | |
627 | ret = system(pre_cmd); | |
628 | if (ret) | |
629 | return ret; | |
630 | } | |
631 | ||
632 | if (sync_run) | |
633 | sync(); | |
634 | ||
e55c14af | 635 | ret = __run_perf_stat(argc, argv, run_idx); |
1f16c575 PZ |
636 | if (ret) |
637 | return ret; | |
638 | ||
639 | if (post_cmd) { | |
640 | ret = system(post_cmd); | |
641 | if (ret) | |
642 | return ret; | |
643 | } | |
644 | ||
645 | return ret; | |
646 | } | |
647 | ||
a5a9eac1 JO |
648 | static void print_counters(struct timespec *ts, int argc, const char **argv) |
649 | { | |
0174820a JO |
650 | /* Do not print anything if we record to the pipe. */ |
651 | if (STAT_RECORD && perf_stat.data.is_pipe) | |
652 | return; | |
653 | ||
c512e0ea | 654 | perf_evlist__print_counters(evsel_list, &stat_config, &target, |
b64df7f3 | 655 | ts, argc, argv); |
a5a9eac1 JO |
656 | } |
657 | ||
f7b7c26e PZ |
658 | static volatile int signr = -1; |
659 | ||
5242519b | 660 | static void skip_signal(int signo) |
ddcacfa0 | 661 | { |
ec0d3d1f | 662 | if ((child_pid == -1) || stat_config.interval) |
60666c63 LW |
663 | done = 1; |
664 | ||
f7b7c26e | 665 | signr = signo; |
d07f0b12 SE |
666 | /* |
667 | * render child_pid harmless | |
668 | * won't send SIGTERM to a random | |
669 | * process in case of race condition | |
670 | * and fast PID recycling | |
671 | */ | |
672 | child_pid = -1; | |
f7b7c26e PZ |
673 | } |
674 | ||
675 | static void sig_atexit(void) | |
676 | { | |
d07f0b12 SE |
677 | sigset_t set, oset; |
678 | ||
679 | /* | |
680 | * avoid race condition with SIGCHLD handler | |
681 | * in skip_signal() which is modifying child_pid | |
682 | * goal is to avoid send SIGTERM to a random | |
683 | * process | |
684 | */ | |
685 | sigemptyset(&set); | |
686 | sigaddset(&set, SIGCHLD); | |
687 | sigprocmask(SIG_BLOCK, &set, &oset); | |
688 | ||
933da83a CW |
689 | if (child_pid != -1) |
690 | kill(child_pid, SIGTERM); | |
691 | ||
d07f0b12 SE |
692 | sigprocmask(SIG_SETMASK, &oset, NULL); |
693 | ||
f7b7c26e PZ |
694 | if (signr == -1) |
695 | return; | |
696 | ||
697 | signal(signr, SIG_DFL); | |
698 | kill(getpid(), signr); | |
5242519b IM |
699 | } |
700 | ||
1d037ca1 IT |
701 | static int stat__set_big_num(const struct option *opt __maybe_unused, |
702 | const char *s __maybe_unused, int unset) | |
d7470b6a SE |
703 | { |
704 | big_num_opt = unset ? 0 : 1; | |
705 | return 0; | |
706 | } | |
707 | ||
44b1e60a AK |
708 | static int enable_metric_only(const struct option *opt __maybe_unused, |
709 | const char *s __maybe_unused, int unset) | |
710 | { | |
711 | force_metric_only = true; | |
0ce5aa02 | 712 | stat_config.metric_only = !unset; |
44b1e60a AK |
713 | return 0; |
714 | } | |
715 | ||
b18f3e36 AK |
716 | static int parse_metric_groups(const struct option *opt, |
717 | const char *str, | |
718 | int unset __maybe_unused) | |
719 | { | |
d0192fdb | 720 | return metricgroup__parse_groups(opt, str, &stat_config.metric_events); |
b18f3e36 AK |
721 | } |
722 | ||
51433ead | 723 | static struct option stat_options[] = { |
e0547311 JO |
724 | OPT_BOOLEAN('T', "transaction", &transaction_run, |
725 | "hardware transaction statistics"), | |
726 | OPT_CALLBACK('e', "event", &evsel_list, "event", | |
727 | "event selector. use 'perf list' to list available events", | |
728 | parse_events_option), | |
729 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", | |
730 | "event filter", parse_filter), | |
5698f26b | 731 | OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, |
e0547311 JO |
732 | "child tasks do not inherit counters"), |
733 | OPT_STRING('p', "pid", &target.pid, "pid", | |
734 | "stat events on existing process id"), | |
735 | OPT_STRING('t', "tid", &target.tid, "tid", | |
736 | "stat events on existing thread id"), | |
737 | OPT_BOOLEAN('a', "all-cpus", &target.system_wide, | |
738 | "system-wide collection from all CPUs"), | |
739 | OPT_BOOLEAN('g', "group", &group, | |
740 | "put the counters into a counter group"), | |
75998bb2 AK |
741 | OPT_BOOLEAN(0, "scale", &stat_config.scale, |
742 | "Use --no-scale to disable counter scaling for multiplexing"), | |
e0547311 JO |
743 | OPT_INCR('v', "verbose", &verbose, |
744 | "be more verbose (show counter open errors, etc)"), | |
d97ae04b | 745 | OPT_INTEGER('r', "repeat", &stat_config.run_count, |
e0547311 | 746 | "repeat command and print average + stddev (max: 100, forever: 0)"), |
54ac0b1b | 747 | OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, |
e55c14af | 748 | "display details about each run (only with -r option)"), |
aea0dca1 | 749 | OPT_BOOLEAN('n', "null", &stat_config.null_run, |
e0547311 JO |
750 | "null run - dont start any counters"), |
751 | OPT_INCR('d', "detailed", &detailed_run, | |
752 | "detailed run - start a lot of events"), | |
753 | OPT_BOOLEAN('S', "sync", &sync_run, | |
754 | "call sync() before starting a run"), | |
755 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, | |
756 | "print large numbers with thousands\' separators", | |
757 | stat__set_big_num), | |
758 | OPT_STRING('C', "cpu", &target.cpu_list, "cpu", | |
759 | "list of cpus to monitor in system-wide"), | |
760 | OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, | |
761 | "disable CPU count aggregation", AGGR_NONE), | |
fdee335b | 762 | OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), |
fa7070a3 | 763 | OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", |
e0547311 JO |
764 | "print counts with custom separator"), |
765 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", | |
766 | "monitor event in cgroup name only", parse_cgroups), | |
767 | OPT_STRING('o', "output", &output_name, "file", "output file name"), | |
768 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
769 | OPT_INTEGER(0, "log-fd", &output_fd, | |
770 | "log output to fd, instead of stderr"), | |
771 | OPT_STRING(0, "pre", &pre_cmd, "command", | |
772 | "command to run prior to the measured command"), | |
773 | OPT_STRING(0, "post", &post_cmd, "command", | |
774 | "command to run after to the measured command"), | |
775 | OPT_UINTEGER('I', "interval-print", &stat_config.interval, | |
9dc9a95f AB |
776 | "print counts at regular interval in ms " |
777 | "(overhead is possible for values <= 100ms)"), | |
db06a269 | 778 | OPT_INTEGER(0, "interval-count", &stat_config.times, |
779 | "print counts for fixed number of times"), | |
132c6ba3 | 780 | OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, |
9660e08e | 781 | "clear screen in between new interval"), |
f1f8ad52 | 782 | OPT_UINTEGER(0, "timeout", &stat_config.timeout, |
783 | "stop workload and print counts after a timeout period in ms (>= 10ms)"), | |
e0547311 JO |
784 | OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, |
785 | "aggregate counts per processor socket", AGGR_SOCKET), | |
db5742b6 KL |
786 | OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, |
787 | "aggregate counts per processor die", AGGR_DIE), | |
e0547311 JO |
788 | OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, |
789 | "aggregate counts per physical processor core", AGGR_CORE), | |
790 | OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, | |
791 | "aggregate counts per thread", AGGR_THREAD), | |
728c0ee0 | 792 | OPT_UINTEGER('D', "delay", &stat_config.initial_delay, |
e0547311 | 793 | "ms to wait before starting measurement after program start"), |
0ce5aa02 | 794 | OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, |
44b1e60a AK |
795 | "Only print computed metrics. No raw values", enable_metric_only), |
796 | OPT_BOOLEAN(0, "topdown", &topdown_run, | |
797 | "measure topdown level 1 statistics"), | |
daefd0bc KL |
798 | OPT_BOOLEAN(0, "smi-cost", &smi_cost, |
799 | "measure SMI cost"), | |
b18f3e36 AK |
800 | OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", |
801 | "monitor specified metrics or metric groups (separated by ,)", | |
802 | parse_metric_groups), | |
e0547311 JO |
803 | OPT_END() |
804 | }; | |
805 | ||
6f6b6594 | 806 | static int perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, |
f854839b | 807 | struct perf_cpu_map *map, int cpu) |
1fe7a300 JO |
808 | { |
809 | return cpu_map__get_socket(map, cpu, NULL); | |
810 | } | |
811 | ||
db5742b6 | 812 | static int perf_stat__get_die(struct perf_stat_config *config __maybe_unused, |
f854839b | 813 | struct perf_cpu_map *map, int cpu) |
db5742b6 KL |
814 | { |
815 | return cpu_map__get_die(map, cpu, NULL); | |
816 | } | |
817 | ||
6f6b6594 | 818 | static int perf_stat__get_core(struct perf_stat_config *config __maybe_unused, |
f854839b | 819 | struct perf_cpu_map *map, int cpu) |
1fe7a300 JO |
820 | { |
821 | return cpu_map__get_core(map, cpu, NULL); | |
822 | } | |
823 | ||
f854839b | 824 | static int cpu_map__get_max(struct perf_cpu_map *map) |
1e5a2931 JO |
825 | { |
826 | int i, max = -1; | |
827 | ||
828 | for (i = 0; i < map->nr; i++) { | |
829 | if (map->map[i] > max) | |
830 | max = map->map[i]; | |
831 | } | |
832 | ||
833 | return max; | |
834 | } | |
835 | ||
6f6b6594 | 836 | static int perf_stat__get_aggr(struct perf_stat_config *config, |
f854839b | 837 | aggr_get_id_t get_id, struct perf_cpu_map *map, int idx) |
1e5a2931 JO |
838 | { |
839 | int cpu; | |
840 | ||
841 | if (idx >= map->nr) | |
842 | return -1; | |
843 | ||
844 | cpu = map->map[idx]; | |
845 | ||
6f6b6594 JO |
846 | if (config->cpus_aggr_map->map[cpu] == -1) |
847 | config->cpus_aggr_map->map[cpu] = get_id(config, map, idx); | |
1e5a2931 | 848 | |
6f6b6594 | 849 | return config->cpus_aggr_map->map[cpu]; |
1e5a2931 JO |
850 | } |
851 | ||
6f6b6594 | 852 | static int perf_stat__get_socket_cached(struct perf_stat_config *config, |
f854839b | 853 | struct perf_cpu_map *map, int idx) |
1e5a2931 | 854 | { |
6f6b6594 | 855 | return perf_stat__get_aggr(config, perf_stat__get_socket, map, idx); |
1e5a2931 JO |
856 | } |
857 | ||
db5742b6 | 858 | static int perf_stat__get_die_cached(struct perf_stat_config *config, |
f854839b | 859 | struct perf_cpu_map *map, int idx) |
db5742b6 KL |
860 | { |
861 | return perf_stat__get_aggr(config, perf_stat__get_die, map, idx); | |
862 | } | |
863 | ||
6f6b6594 | 864 | static int perf_stat__get_core_cached(struct perf_stat_config *config, |
f854839b | 865 | struct perf_cpu_map *map, int idx) |
1e5a2931 | 866 | { |
6f6b6594 | 867 | return perf_stat__get_aggr(config, perf_stat__get_core, map, idx); |
1e5a2931 JO |
868 | } |
869 | ||
4fc4d8df JY |
870 | static bool term_percore_set(void) |
871 | { | |
32dcd021 | 872 | struct evsel *counter; |
4fc4d8df JY |
873 | |
874 | evlist__for_each_entry(evsel_list, counter) { | |
875 | if (counter->percore) | |
876 | return true; | |
877 | } | |
878 | ||
879 | return false; | |
880 | } | |
881 | ||
86ee6e18 SE |
882 | static int perf_stat_init_aggr_mode(void) |
883 | { | |
1e5a2931 JO |
884 | int nr; |
885 | ||
421a50f3 | 886 | switch (stat_config.aggr_mode) { |
86ee6e18 | 887 | case AGGR_SOCKET: |
f72f901d | 888 | if (cpu_map__build_socket_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
86ee6e18 SE |
889 | perror("cannot build socket map"); |
890 | return -1; | |
891 | } | |
6f6b6594 | 892 | stat_config.aggr_get_id = perf_stat__get_socket_cached; |
86ee6e18 | 893 | break; |
db5742b6 | 894 | case AGGR_DIE: |
f72f901d | 895 | if (cpu_map__build_die_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
db5742b6 KL |
896 | perror("cannot build die map"); |
897 | return -1; | |
898 | } | |
899 | stat_config.aggr_get_id = perf_stat__get_die_cached; | |
900 | break; | |
12c08a9f | 901 | case AGGR_CORE: |
f72f901d | 902 | if (cpu_map__build_core_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
12c08a9f SE |
903 | perror("cannot build core map"); |
904 | return -1; | |
905 | } | |
6f6b6594 | 906 | stat_config.aggr_get_id = perf_stat__get_core_cached; |
12c08a9f | 907 | break; |
86ee6e18 | 908 | case AGGR_NONE: |
4fc4d8df | 909 | if (term_percore_set()) { |
f72f901d | 910 | if (cpu_map__build_core_map(evsel_list->core.cpus, |
4fc4d8df JY |
911 | &stat_config.aggr_map)) { |
912 | perror("cannot build core map"); | |
913 | return -1; | |
914 | } | |
915 | stat_config.aggr_get_id = perf_stat__get_core_cached; | |
916 | } | |
917 | break; | |
86ee6e18 | 918 | case AGGR_GLOBAL: |
32b8af82 | 919 | case AGGR_THREAD: |
208df99e | 920 | case AGGR_UNSET: |
86ee6e18 SE |
921 | default: |
922 | break; | |
923 | } | |
1e5a2931 JO |
924 | |
925 | /* | |
926 | * The evsel_list->cpus is the base we operate on, | |
927 | * taking the highest cpu number to be the size of | |
928 | * the aggregation translate cpumap. | |
929 | */ | |
f72f901d | 930 | nr = cpu_map__get_max(evsel_list->core.cpus); |
315c0a1f | 931 | stat_config.cpus_aggr_map = perf_cpu_map__empty_new(nr + 1); |
6f6b6594 | 932 | return stat_config.cpus_aggr_map ? 0 : -ENOMEM; |
86ee6e18 SE |
933 | } |
934 | ||
544c2ae7 MH |
935 | static void perf_stat__exit_aggr_mode(void) |
936 | { | |
38f01d8d JO |
937 | perf_cpu_map__put(stat_config.aggr_map); |
938 | perf_cpu_map__put(stat_config.cpus_aggr_map); | |
6f6b6594 JO |
939 | stat_config.aggr_map = NULL; |
940 | stat_config.cpus_aggr_map = NULL; | |
544c2ae7 MH |
941 | } |
942 | ||
f854839b | 943 | static inline int perf_env__get_cpu(struct perf_env *env, struct perf_cpu_map *map, int idx) |
68d702f7 JO |
944 | { |
945 | int cpu; | |
946 | ||
947 | if (idx > map->nr) | |
948 | return -1; | |
949 | ||
950 | cpu = map->map[idx]; | |
951 | ||
da8a58b5 | 952 | if (cpu >= env->nr_cpus_avail) |
68d702f7 JO |
953 | return -1; |
954 | ||
955 | return cpu; | |
956 | } | |
957 | ||
f854839b | 958 | static int perf_env__get_socket(struct perf_cpu_map *map, int idx, void *data) |
68d702f7 JO |
959 | { |
960 | struct perf_env *env = data; | |
961 | int cpu = perf_env__get_cpu(env, map, idx); | |
962 | ||
963 | return cpu == -1 ? -1 : env->cpu[cpu].socket_id; | |
964 | } | |
965 | ||
f854839b | 966 | static int perf_env__get_die(struct perf_cpu_map *map, int idx, void *data) |
db5742b6 KL |
967 | { |
968 | struct perf_env *env = data; | |
969 | int die_id = -1, cpu = perf_env__get_cpu(env, map, idx); | |
970 | ||
971 | if (cpu != -1) { | |
972 | /* | |
973 | * Encode socket in bit range 15:8 | |
974 | * die_id is relative to socket, | |
975 | * we need a global id. So we combine | |
976 | * socket + die id | |
977 | */ | |
978 | if (WARN_ONCE(env->cpu[cpu].socket_id >> 8, "The socket id number is too big.\n")) | |
979 | return -1; | |
980 | ||
981 | if (WARN_ONCE(env->cpu[cpu].die_id >> 8, "The die id number is too big.\n")) | |
982 | return -1; | |
983 | ||
984 | die_id = (env->cpu[cpu].socket_id << 8) | (env->cpu[cpu].die_id & 0xff); | |
985 | } | |
986 | ||
987 | return die_id; | |
988 | } | |
989 | ||
f854839b | 990 | static int perf_env__get_core(struct perf_cpu_map *map, int idx, void *data) |
68d702f7 JO |
991 | { |
992 | struct perf_env *env = data; | |
993 | int core = -1, cpu = perf_env__get_cpu(env, map, idx); | |
994 | ||
995 | if (cpu != -1) { | |
68d702f7 | 996 | /* |
db5742b6 KL |
997 | * Encode socket in bit range 31:24 |
998 | * encode die id in bit range 23:16 | |
999 | * core_id is relative to socket and die, | |
68d702f7 | 1000 | * we need a global id. So we combine |
db5742b6 | 1001 | * socket + die id + core id |
68d702f7 | 1002 | */ |
db5742b6 KL |
1003 | if (WARN_ONCE(env->cpu[cpu].socket_id >> 8, "The socket id number is too big.\n")) |
1004 | return -1; | |
1005 | ||
1006 | if (WARN_ONCE(env->cpu[cpu].die_id >> 8, "The die id number is too big.\n")) | |
1007 | return -1; | |
1008 | ||
1009 | if (WARN_ONCE(env->cpu[cpu].core_id >> 16, "The core id number is too big.\n")) | |
1010 | return -1; | |
1011 | ||
1012 | core = (env->cpu[cpu].socket_id << 24) | | |
1013 | (env->cpu[cpu].die_id << 16) | | |
1014 | (env->cpu[cpu].core_id & 0xffff); | |
68d702f7 JO |
1015 | } |
1016 | ||
1017 | return core; | |
1018 | } | |
1019 | ||
f854839b JO |
1020 | static int perf_env__build_socket_map(struct perf_env *env, struct perf_cpu_map *cpus, |
1021 | struct perf_cpu_map **sockp) | |
68d702f7 JO |
1022 | { |
1023 | return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env); | |
1024 | } | |
1025 | ||
f854839b JO |
1026 | static int perf_env__build_die_map(struct perf_env *env, struct perf_cpu_map *cpus, |
1027 | struct perf_cpu_map **diep) | |
db5742b6 KL |
1028 | { |
1029 | return cpu_map__build_map(cpus, diep, perf_env__get_die, env); | |
1030 | } | |
1031 | ||
f854839b JO |
1032 | static int perf_env__build_core_map(struct perf_env *env, struct perf_cpu_map *cpus, |
1033 | struct perf_cpu_map **corep) | |
68d702f7 JO |
1034 | { |
1035 | return cpu_map__build_map(cpus, corep, perf_env__get_core, env); | |
1036 | } | |
1037 | ||
6f6b6594 | 1038 | static int perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, |
f854839b | 1039 | struct perf_cpu_map *map, int idx) |
68d702f7 JO |
1040 | { |
1041 | return perf_env__get_socket(map, idx, &perf_stat.session->header.env); | |
1042 | } | |
db5742b6 | 1043 | static int perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, |
f854839b | 1044 | struct perf_cpu_map *map, int idx) |
db5742b6 KL |
1045 | { |
1046 | return perf_env__get_die(map, idx, &perf_stat.session->header.env); | |
1047 | } | |
68d702f7 | 1048 | |
6f6b6594 | 1049 | static int perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, |
f854839b | 1050 | struct perf_cpu_map *map, int idx) |
68d702f7 JO |
1051 | { |
1052 | return perf_env__get_core(map, idx, &perf_stat.session->header.env); | |
1053 | } | |
1054 | ||
1055 | static int perf_stat_init_aggr_mode_file(struct perf_stat *st) | |
1056 | { | |
1057 | struct perf_env *env = &st->session->header.env; | |
1058 | ||
1059 | switch (stat_config.aggr_mode) { | |
1060 | case AGGR_SOCKET: | |
f72f901d | 1061 | if (perf_env__build_socket_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
68d702f7 JO |
1062 | perror("cannot build socket map"); |
1063 | return -1; | |
1064 | } | |
6f6b6594 | 1065 | stat_config.aggr_get_id = perf_stat__get_socket_file; |
68d702f7 | 1066 | break; |
db5742b6 | 1067 | case AGGR_DIE: |
f72f901d | 1068 | if (perf_env__build_die_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
db5742b6 KL |
1069 | perror("cannot build die map"); |
1070 | return -1; | |
1071 | } | |
1072 | stat_config.aggr_get_id = perf_stat__get_die_file; | |
1073 | break; | |
68d702f7 | 1074 | case AGGR_CORE: |
f72f901d | 1075 | if (perf_env__build_core_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
68d702f7 JO |
1076 | perror("cannot build core map"); |
1077 | return -1; | |
1078 | } | |
6f6b6594 | 1079 | stat_config.aggr_get_id = perf_stat__get_core_file; |
68d702f7 JO |
1080 | break; |
1081 | case AGGR_NONE: | |
1082 | case AGGR_GLOBAL: | |
1083 | case AGGR_THREAD: | |
1084 | case AGGR_UNSET: | |
1085 | default: | |
1086 | break; | |
1087 | } | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
44b1e60a AK |
1092 | static int topdown_filter_events(const char **attr, char **str, bool use_group) |
1093 | { | |
1094 | int off = 0; | |
1095 | int i; | |
1096 | int len = 0; | |
1097 | char *s; | |
1098 | ||
1099 | for (i = 0; attr[i]; i++) { | |
1100 | if (pmu_have_event("cpu", attr[i])) { | |
1101 | len += strlen(attr[i]) + 1; | |
1102 | attr[i - off] = attr[i]; | |
1103 | } else | |
1104 | off++; | |
1105 | } | |
1106 | attr[i - off] = NULL; | |
1107 | ||
1108 | *str = malloc(len + 1 + 2); | |
1109 | if (!*str) | |
1110 | return -1; | |
1111 | s = *str; | |
1112 | if (i - off == 0) { | |
1113 | *s = 0; | |
1114 | return 0; | |
1115 | } | |
1116 | if (use_group) | |
1117 | *s++ = '{'; | |
1118 | for (i = 0; attr[i]; i++) { | |
1119 | strcpy(s, attr[i]); | |
1120 | s += strlen(s); | |
1121 | *s++ = ','; | |
1122 | } | |
1123 | if (use_group) { | |
1124 | s[-1] = '}'; | |
1125 | *s = 0; | |
1126 | } else | |
1127 | s[-1] = 0; | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | __weak bool arch_topdown_check_group(bool *warn) | |
1132 | { | |
1133 | *warn = false; | |
1134 | return false; | |
1135 | } | |
1136 | ||
1137 | __weak void arch_topdown_group_warn(void) | |
1138 | { | |
1139 | } | |
1140 | ||
2cba3ffb IM |
1141 | /* |
1142 | * Add default attributes, if there were no attributes specified or | |
1143 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1144 | */ | |
1145 | static int add_default_attributes(void) | |
1146 | { | |
44b1e60a | 1147 | int err; |
9dec4473 | 1148 | struct perf_event_attr default_attrs0[] = { |
b070a547 ACM |
1149 | |
1150 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, | |
1151 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, | |
1152 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, | |
1153 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, | |
1154 | ||
1155 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, | |
9dec4473 AK |
1156 | }; |
1157 | struct perf_event_attr frontend_attrs[] = { | |
b070a547 | 1158 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, |
9dec4473 AK |
1159 | }; |
1160 | struct perf_event_attr backend_attrs[] = { | |
b070a547 | 1161 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, |
9dec4473 AK |
1162 | }; |
1163 | struct perf_event_attr default_attrs1[] = { | |
b070a547 ACM |
1164 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
1165 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, | |
1166 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, | |
1167 | ||
1168 | }; | |
1169 | ||
1170 | /* | |
1171 | * Detailed stats (-d), covering the L1 and last level data caches: | |
1172 | */ | |
1173 | struct perf_event_attr detailed_attrs[] = { | |
1174 | ||
1175 | { .type = PERF_TYPE_HW_CACHE, | |
1176 | .config = | |
1177 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1178 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1179 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1180 | ||
1181 | { .type = PERF_TYPE_HW_CACHE, | |
1182 | .config = | |
1183 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1184 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1185 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1186 | ||
1187 | { .type = PERF_TYPE_HW_CACHE, | |
1188 | .config = | |
1189 | PERF_COUNT_HW_CACHE_LL << 0 | | |
1190 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1191 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1192 | ||
1193 | { .type = PERF_TYPE_HW_CACHE, | |
1194 | .config = | |
1195 | PERF_COUNT_HW_CACHE_LL << 0 | | |
1196 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1197 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1198 | }; | |
1199 | ||
1200 | /* | |
1201 | * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: | |
1202 | */ | |
1203 | struct perf_event_attr very_detailed_attrs[] = { | |
1204 | ||
1205 | { .type = PERF_TYPE_HW_CACHE, | |
1206 | .config = | |
1207 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
1208 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1209 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1210 | ||
1211 | { .type = PERF_TYPE_HW_CACHE, | |
1212 | .config = | |
1213 | PERF_COUNT_HW_CACHE_L1I << 0 | | |
1214 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1215 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1216 | ||
1217 | { .type = PERF_TYPE_HW_CACHE, | |
1218 | .config = | |
1219 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
1220 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1221 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1222 | ||
1223 | { .type = PERF_TYPE_HW_CACHE, | |
1224 | .config = | |
1225 | PERF_COUNT_HW_CACHE_DTLB << 0 | | |
1226 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1227 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1228 | ||
1229 | { .type = PERF_TYPE_HW_CACHE, | |
1230 | .config = | |
1231 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
1232 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1233 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1234 | ||
1235 | { .type = PERF_TYPE_HW_CACHE, | |
1236 | .config = | |
1237 | PERF_COUNT_HW_CACHE_ITLB << 0 | | |
1238 | (PERF_COUNT_HW_CACHE_OP_READ << 8) | | |
1239 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1240 | ||
1241 | }; | |
1242 | ||
1243 | /* | |
1244 | * Very, very detailed stats (-d -d -d), adding prefetch events: | |
1245 | */ | |
1246 | struct perf_event_attr very_very_detailed_attrs[] = { | |
1247 | ||
1248 | { .type = PERF_TYPE_HW_CACHE, | |
1249 | .config = | |
1250 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1251 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
1252 | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, | |
1253 | ||
1254 | { .type = PERF_TYPE_HW_CACHE, | |
1255 | .config = | |
1256 | PERF_COUNT_HW_CACHE_L1D << 0 | | |
1257 | (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | | |
1258 | (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, | |
1259 | }; | |
a5cfa621 | 1260 | struct parse_events_error errinfo; |
b070a547 | 1261 | |
2cba3ffb | 1262 | /* Set attrs if no event is selected and !null_run: */ |
aea0dca1 | 1263 | if (stat_config.null_run) |
2cba3ffb IM |
1264 | return 0; |
1265 | ||
4cabc3d1 | 1266 | if (transaction_run) { |
742d92ff TR |
1267 | /* Handle -T as -M transaction. Once platform specific metrics |
1268 | * support has been added to the json files, all archictures | |
1269 | * will use this approach. To determine transaction support | |
1270 | * on an architecture test for such a metric name. | |
1271 | */ | |
1272 | if (metricgroup__has_metric("transaction")) { | |
1273 | struct option opt = { .value = &evsel_list }; | |
1274 | ||
1275 | return metricgroup__parse_groups(&opt, "transaction", | |
d0192fdb | 1276 | &stat_config.metric_events); |
742d92ff TR |
1277 | } |
1278 | ||
4cabc3d1 AK |
1279 | if (pmu_have_event("cpu", "cycles-ct") && |
1280 | pmu_have_event("cpu", "el-start")) | |
fca32340 TR |
1281 | err = parse_events(evsel_list, transaction_attrs, |
1282 | &errinfo); | |
4cabc3d1 | 1283 | else |
fca32340 TR |
1284 | err = parse_events(evsel_list, |
1285 | transaction_limited_attrs, | |
1286 | &errinfo); | |
a454742c | 1287 | if (err) { |
4cabc3d1 | 1288 | fprintf(stderr, "Cannot set up transaction events\n"); |
a5cfa621 | 1289 | parse_events_print_error(&errinfo, transaction_attrs); |
4cabc3d1 AK |
1290 | return -1; |
1291 | } | |
1292 | return 0; | |
1293 | } | |
1294 | ||
daefd0bc KL |
1295 | if (smi_cost) { |
1296 | int smi; | |
1297 | ||
1298 | if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { | |
1299 | fprintf(stderr, "freeze_on_smi is not supported.\n"); | |
1300 | return -1; | |
1301 | } | |
1302 | ||
1303 | if (!smi) { | |
1304 | if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { | |
1305 | fprintf(stderr, "Failed to set freeze_on_smi.\n"); | |
1306 | return -1; | |
1307 | } | |
1308 | smi_reset = true; | |
1309 | } | |
1310 | ||
1311 | if (pmu_have_event("msr", "aperf") && | |
1312 | pmu_have_event("msr", "smi")) { | |
1313 | if (!force_metric_only) | |
0ce5aa02 | 1314 | stat_config.metric_only = true; |
a5cfa621 | 1315 | err = parse_events(evsel_list, smi_cost_attrs, &errinfo); |
daefd0bc KL |
1316 | } else { |
1317 | fprintf(stderr, "To measure SMI cost, it needs " | |
1318 | "msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); | |
a5cfa621 | 1319 | parse_events_print_error(&errinfo, smi_cost_attrs); |
daefd0bc KL |
1320 | return -1; |
1321 | } | |
1322 | if (err) { | |
1323 | fprintf(stderr, "Cannot set up SMI cost events\n"); | |
1324 | return -1; | |
1325 | } | |
1326 | return 0; | |
1327 | } | |
1328 | ||
44b1e60a AK |
1329 | if (topdown_run) { |
1330 | char *str = NULL; | |
1331 | bool warn = false; | |
1332 | ||
1333 | if (stat_config.aggr_mode != AGGR_GLOBAL && | |
1334 | stat_config.aggr_mode != AGGR_CORE) { | |
1335 | pr_err("top down event configuration requires --per-core mode\n"); | |
1336 | return -1; | |
1337 | } | |
1338 | stat_config.aggr_mode = AGGR_CORE; | |
1339 | if (nr_cgroups || !target__has_cpu(&target)) { | |
1340 | pr_err("top down event configuration requires system-wide mode (-a)\n"); | |
1341 | return -1; | |
1342 | } | |
1343 | ||
1344 | if (!force_metric_only) | |
0ce5aa02 | 1345 | stat_config.metric_only = true; |
44b1e60a AK |
1346 | if (topdown_filter_events(topdown_attrs, &str, |
1347 | arch_topdown_check_group(&warn)) < 0) { | |
1348 | pr_err("Out of memory\n"); | |
1349 | return -1; | |
1350 | } | |
1351 | if (topdown_attrs[0] && str) { | |
1352 | if (warn) | |
1353 | arch_topdown_group_warn(); | |
a5cfa621 | 1354 | err = parse_events(evsel_list, str, &errinfo); |
44b1e60a AK |
1355 | if (err) { |
1356 | fprintf(stderr, | |
1357 | "Cannot set up top down events %s: %d\n", | |
1358 | str, err); | |
a5cfa621 | 1359 | parse_events_print_error(&errinfo, str); |
c74b0503 | 1360 | free(str); |
44b1e60a AK |
1361 | return -1; |
1362 | } | |
1363 | } else { | |
1364 | fprintf(stderr, "System does not support topdown\n"); | |
1365 | return -1; | |
1366 | } | |
1367 | free(str); | |
1368 | } | |
1369 | ||
6484d2f9 | 1370 | if (!evsel_list->core.nr_entries) { |
a1f3d567 NK |
1371 | if (target__has_cpu(&target)) |
1372 | default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; | |
1373 | ||
9dec4473 AK |
1374 | if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0) |
1375 | return -1; | |
1376 | if (pmu_have_event("cpu", "stalled-cycles-frontend")) { | |
1377 | if (perf_evlist__add_default_attrs(evsel_list, | |
1378 | frontend_attrs) < 0) | |
1379 | return -1; | |
1380 | } | |
1381 | if (pmu_have_event("cpu", "stalled-cycles-backend")) { | |
1382 | if (perf_evlist__add_default_attrs(evsel_list, | |
1383 | backend_attrs) < 0) | |
1384 | return -1; | |
1385 | } | |
1386 | if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0) | |
50d08e47 | 1387 | return -1; |
2cba3ffb IM |
1388 | } |
1389 | ||
1390 | /* Detailed events get appended to the event list: */ | |
1391 | ||
1392 | if (detailed_run < 1) | |
1393 | return 0; | |
1394 | ||
1395 | /* Append detailed run extra attributes: */ | |
79695e1b | 1396 | if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
50d08e47 | 1397 | return -1; |
2cba3ffb IM |
1398 | |
1399 | if (detailed_run < 2) | |
1400 | return 0; | |
1401 | ||
1402 | /* Append very detailed run extra attributes: */ | |
79695e1b | 1403 | if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
50d08e47 | 1404 | return -1; |
2cba3ffb IM |
1405 | |
1406 | if (detailed_run < 3) | |
1407 | return 0; | |
1408 | ||
1409 | /* Append very, very detailed run extra attributes: */ | |
79695e1b | 1410 | return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
2cba3ffb IM |
1411 | } |
1412 | ||
8a59f3cc | 1413 | static const char * const stat_record_usage[] = { |
4979d0c7 JO |
1414 | "perf stat record [<options>]", |
1415 | NULL, | |
1416 | }; | |
1417 | ||
3ba78bd0 JO |
1418 | static void init_features(struct perf_session *session) |
1419 | { | |
1420 | int feat; | |
1421 | ||
1422 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) | |
1423 | perf_header__set_feat(&session->header, feat); | |
1424 | ||
8002a63f | 1425 | perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); |
3ba78bd0 JO |
1426 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); |
1427 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); | |
1428 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); | |
1429 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); | |
1430 | } | |
1431 | ||
4979d0c7 JO |
1432 | static int __cmd_record(int argc, const char **argv) |
1433 | { | |
1434 | struct perf_session *session; | |
8ceb41d7 | 1435 | struct perf_data *data = &perf_stat.data; |
4979d0c7 | 1436 | |
8a59f3cc | 1437 | argc = parse_options(argc, argv, stat_options, stat_record_usage, |
4979d0c7 JO |
1438 | PARSE_OPT_STOP_AT_NON_OPTION); |
1439 | ||
1440 | if (output_name) | |
2d4f2799 | 1441 | data->path = output_name; |
4979d0c7 | 1442 | |
d97ae04b | 1443 | if (stat_config.run_count != 1 || forever) { |
e9d6db8e JO |
1444 | pr_err("Cannot use -r option with perf stat record.\n"); |
1445 | return -1; | |
1446 | } | |
1447 | ||
8ceb41d7 | 1448 | session = perf_session__new(data, false, NULL); |
4979d0c7 JO |
1449 | if (session == NULL) { |
1450 | pr_err("Perf session creation failed.\n"); | |
1451 | return -1; | |
1452 | } | |
1453 | ||
3ba78bd0 JO |
1454 | init_features(session); |
1455 | ||
4979d0c7 JO |
1456 | session->evlist = evsel_list; |
1457 | perf_stat.session = session; | |
1458 | perf_stat.record = true; | |
1459 | return argc; | |
1460 | } | |
1461 | ||
89f1688a JO |
1462 | static int process_stat_round_event(struct perf_session *session, |
1463 | union perf_event *event) | |
a56f9390 | 1464 | { |
e3b03b6c | 1465 | struct stat_round_event *stat_round = &event->stat_round; |
32dcd021 | 1466 | struct evsel *counter; |
a56f9390 JO |
1467 | struct timespec tsh, *ts = NULL; |
1468 | const char **argv = session->header.env.cmdline_argv; | |
1469 | int argc = session->header.env.nr_cmdline; | |
1470 | ||
e5cadb93 | 1471 | evlist__for_each_entry(evsel_list, counter) |
a56f9390 JO |
1472 | perf_stat_process_counter(&stat_config, counter); |
1473 | ||
e3b03b6c AK |
1474 | if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) |
1475 | update_stats(&walltime_nsecs_stats, stat_round->time); | |
a56f9390 | 1476 | |
e3b03b6c | 1477 | if (stat_config.interval && stat_round->time) { |
bd48c63e ACM |
1478 | tsh.tv_sec = stat_round->time / NSEC_PER_SEC; |
1479 | tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; | |
a56f9390 JO |
1480 | ts = &tsh; |
1481 | } | |
1482 | ||
1483 | print_counters(ts, argc, argv); | |
1484 | return 0; | |
1485 | } | |
1486 | ||
62ba18ba | 1487 | static |
89f1688a JO |
1488 | int process_stat_config_event(struct perf_session *session, |
1489 | union perf_event *event) | |
62ba18ba | 1490 | { |
89f1688a | 1491 | struct perf_tool *tool = session->tool; |
68d702f7 JO |
1492 | struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
1493 | ||
62ba18ba | 1494 | perf_event__read_stat_config(&stat_config, &event->stat_config); |
68d702f7 | 1495 | |
315c0a1f | 1496 | if (perf_cpu_map__empty(st->cpus)) { |
89af4e05 JO |
1497 | if (st->aggr_mode != AGGR_UNSET) |
1498 | pr_warning("warning: processing task data, aggregation mode not set\n"); | |
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | if (st->aggr_mode != AGGR_UNSET) | |
1503 | stat_config.aggr_mode = st->aggr_mode; | |
1504 | ||
8ceb41d7 | 1505 | if (perf_stat.data.is_pipe) |
68d702f7 JO |
1506 | perf_stat_init_aggr_mode(); |
1507 | else | |
1508 | perf_stat_init_aggr_mode_file(st); | |
1509 | ||
62ba18ba JO |
1510 | return 0; |
1511 | } | |
1512 | ||
1975d36e JO |
1513 | static int set_maps(struct perf_stat *st) |
1514 | { | |
1515 | if (!st->cpus || !st->threads) | |
1516 | return 0; | |
1517 | ||
1518 | if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) | |
1519 | return -EINVAL; | |
1520 | ||
453fa030 | 1521 | perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); |
1975d36e JO |
1522 | |
1523 | if (perf_evlist__alloc_stats(evsel_list, true)) | |
1524 | return -ENOMEM; | |
1525 | ||
1526 | st->maps_allocated = true; | |
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | static | |
89f1688a JO |
1531 | int process_thread_map_event(struct perf_session *session, |
1532 | union perf_event *event) | |
1975d36e | 1533 | { |
89f1688a | 1534 | struct perf_tool *tool = session->tool; |
1975d36e JO |
1535 | struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
1536 | ||
1537 | if (st->threads) { | |
1538 | pr_warning("Extra thread map event, ignoring.\n"); | |
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | st->threads = thread_map__new_event(&event->thread_map); | |
1543 | if (!st->threads) | |
1544 | return -ENOMEM; | |
1545 | ||
1546 | return set_maps(st); | |
1547 | } | |
1548 | ||
1549 | static | |
89f1688a JO |
1550 | int process_cpu_map_event(struct perf_session *session, |
1551 | union perf_event *event) | |
1975d36e | 1552 | { |
89f1688a | 1553 | struct perf_tool *tool = session->tool; |
1975d36e | 1554 | struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
f854839b | 1555 | struct perf_cpu_map *cpus; |
1975d36e JO |
1556 | |
1557 | if (st->cpus) { | |
1558 | pr_warning("Extra cpu map event, ignoring.\n"); | |
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | cpus = cpu_map__new_data(&event->cpu_map.data); | |
1563 | if (!cpus) | |
1564 | return -ENOMEM; | |
1565 | ||
1566 | st->cpus = cpus; | |
1567 | return set_maps(st); | |
1568 | } | |
1569 | ||
56739444 JY |
1570 | static int runtime_stat_new(struct perf_stat_config *config, int nthreads) |
1571 | { | |
1572 | int i; | |
1573 | ||
1574 | config->stats = calloc(nthreads, sizeof(struct runtime_stat)); | |
1575 | if (!config->stats) | |
1576 | return -1; | |
1577 | ||
1578 | config->stats_num = nthreads; | |
1579 | ||
1580 | for (i = 0; i < nthreads; i++) | |
1581 | runtime_stat__init(&config->stats[i]); | |
1582 | ||
1583 | return 0; | |
1584 | } | |
1585 | ||
1586 | static void runtime_stat_delete(struct perf_stat_config *config) | |
1587 | { | |
1588 | int i; | |
1589 | ||
1590 | if (!config->stats) | |
1591 | return; | |
1592 | ||
1593 | for (i = 0; i < config->stats_num; i++) | |
1594 | runtime_stat__exit(&config->stats[i]); | |
1595 | ||
d8f9da24 | 1596 | zfree(&config->stats); |
56739444 JY |
1597 | } |
1598 | ||
8a59f3cc | 1599 | static const char * const stat_report_usage[] = { |
ba6039b6 JO |
1600 | "perf stat report [<options>]", |
1601 | NULL, | |
1602 | }; | |
1603 | ||
1604 | static struct perf_stat perf_stat = { | |
1605 | .tool = { | |
1606 | .attr = perf_event__process_attr, | |
fa6ea781 | 1607 | .event_update = perf_event__process_event_update, |
1975d36e JO |
1608 | .thread_map = process_thread_map_event, |
1609 | .cpu_map = process_cpu_map_event, | |
62ba18ba | 1610 | .stat_config = process_stat_config_event, |
a56f9390 JO |
1611 | .stat = perf_event__process_stat_event, |
1612 | .stat_round = process_stat_round_event, | |
ba6039b6 | 1613 | }, |
89af4e05 | 1614 | .aggr_mode = AGGR_UNSET, |
ba6039b6 JO |
1615 | }; |
1616 | ||
1617 | static int __cmd_report(int argc, const char **argv) | |
1618 | { | |
1619 | struct perf_session *session; | |
1620 | const struct option options[] = { | |
1621 | OPT_STRING('i', "input", &input_name, "file", "input file name"), | |
89af4e05 JO |
1622 | OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, |
1623 | "aggregate counts per processor socket", AGGR_SOCKET), | |
db5742b6 KL |
1624 | OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, |
1625 | "aggregate counts per processor die", AGGR_DIE), | |
89af4e05 JO |
1626 | OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, |
1627 | "aggregate counts per physical processor core", AGGR_CORE), | |
1628 | OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, | |
1629 | "disable CPU count aggregation", AGGR_NONE), | |
ba6039b6 JO |
1630 | OPT_END() |
1631 | }; | |
1632 | struct stat st; | |
1633 | int ret; | |
1634 | ||
8a59f3cc | 1635 | argc = parse_options(argc, argv, options, stat_report_usage, 0); |
ba6039b6 JO |
1636 | |
1637 | if (!input_name || !strlen(input_name)) { | |
1638 | if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
1639 | input_name = "-"; | |
1640 | else | |
1641 | input_name = "perf.data"; | |
1642 | } | |
1643 | ||
2d4f2799 JO |
1644 | perf_stat.data.path = input_name; |
1645 | perf_stat.data.mode = PERF_DATA_MODE_READ; | |
ba6039b6 | 1646 | |
8ceb41d7 | 1647 | session = perf_session__new(&perf_stat.data, false, &perf_stat.tool); |
ba6039b6 JO |
1648 | if (session == NULL) |
1649 | return -1; | |
1650 | ||
1651 | perf_stat.session = session; | |
1652 | stat_config.output = stderr; | |
1653 | evsel_list = session->evlist; | |
1654 | ||
1655 | ret = perf_session__process_events(session); | |
1656 | if (ret) | |
1657 | return ret; | |
1658 | ||
1659 | perf_session__delete(session); | |
1660 | return 0; | |
1661 | } | |
1662 | ||
e3ba76de JO |
1663 | static void setup_system_wide(int forks) |
1664 | { | |
1665 | /* | |
1666 | * Make system wide (-a) the default target if | |
1667 | * no target was specified and one of following | |
1668 | * conditions is met: | |
1669 | * | |
1670 | * - there's no workload specified | |
1671 | * - there is workload specified but all requested | |
1672 | * events are system wide events | |
1673 | */ | |
1674 | if (!target__none(&target)) | |
1675 | return; | |
1676 | ||
1677 | if (!forks) | |
1678 | target.system_wide = true; | |
1679 | else { | |
32dcd021 | 1680 | struct evsel *counter; |
e3ba76de JO |
1681 | |
1682 | evlist__for_each_entry(evsel_list, counter) { | |
1683 | if (!counter->system_wide) | |
1684 | return; | |
1685 | } | |
1686 | ||
6484d2f9 | 1687 | if (evsel_list->core.nr_entries) |
e3ba76de JO |
1688 | target.system_wide = true; |
1689 | } | |
1690 | } | |
1691 | ||
b0ad8ea6 | 1692 | int cmd_stat(int argc, const char **argv) |
5242519b | 1693 | { |
b070a547 ACM |
1694 | const char * const stat_usage[] = { |
1695 | "perf stat [<options>] [<command>]", | |
1696 | NULL | |
1697 | }; | |
cc03c542 | 1698 | int status = -EINVAL, run_idx; |
4aa9015f | 1699 | const char *mode; |
5821522e | 1700 | FILE *output = stderr; |
f1f8ad52 | 1701 | unsigned int interval, timeout; |
ba6039b6 | 1702 | const char * const stat_subcommands[] = { "record", "report" }; |
42202dd5 | 1703 | |
5af52b51 SE |
1704 | setlocale(LC_ALL, ""); |
1705 | ||
0f98b11c | 1706 | evsel_list = evlist__new(); |
361c99a6 ACM |
1707 | if (evsel_list == NULL) |
1708 | return -ENOMEM; | |
1709 | ||
1669e509 | 1710 | parse_events__shrink_config_terms(); |
51433ead MP |
1711 | |
1712 | /* String-parsing callback-based options would segfault when negated */ | |
1713 | set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); | |
1714 | set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); | |
1715 | set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); | |
1716 | ||
4979d0c7 JO |
1717 | argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, |
1718 | (const char **) stat_usage, | |
1719 | PARSE_OPT_STOP_AT_NON_OPTION); | |
37932c18 | 1720 | perf_stat__collect_metric_expr(evsel_list); |
fb4605ba | 1721 | perf_stat__init_shadow_stats(); |
4979d0c7 | 1722 | |
fa7070a3 JO |
1723 | if (stat_config.csv_sep) { |
1724 | stat_config.csv_output = true; | |
1725 | if (!strcmp(stat_config.csv_sep, "\\t")) | |
1726 | stat_config.csv_sep = "\t"; | |
6edb78a2 | 1727 | } else |
fa7070a3 | 1728 | stat_config.csv_sep = DEFAULT_SEPARATOR; |
6edb78a2 | 1729 | |
4979d0c7 JO |
1730 | if (argc && !strncmp(argv[0], "rec", 3)) { |
1731 | argc = __cmd_record(argc, argv); | |
1732 | if (argc < 0) | |
1733 | return -1; | |
ba6039b6 JO |
1734 | } else if (argc && !strncmp(argv[0], "rep", 3)) |
1735 | return __cmd_report(argc, argv); | |
d7470b6a | 1736 | |
ec0d3d1f | 1737 | interval = stat_config.interval; |
f1f8ad52 | 1738 | timeout = stat_config.timeout; |
ec0d3d1f | 1739 | |
4979d0c7 JO |
1740 | /* |
1741 | * For record command the -o is already taken care of. | |
1742 | */ | |
1743 | if (!STAT_RECORD && output_name && strcmp(output_name, "-")) | |
4aa9015f SE |
1744 | output = NULL; |
1745 | ||
56f3bae7 JC |
1746 | if (output_name && output_fd) { |
1747 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
e0547311 JO |
1748 | parse_options_usage(stat_usage, stat_options, "o", 1); |
1749 | parse_options_usage(NULL, stat_options, "log-fd", 0); | |
cc03c542 | 1750 | goto out; |
56f3bae7 | 1751 | } |
fc3e4d07 | 1752 | |
0ce5aa02 | 1753 | if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { |
54b50916 AK |
1754 | fprintf(stderr, "--metric-only is not supported with --per-thread\n"); |
1755 | goto out; | |
1756 | } | |
1757 | ||
d97ae04b | 1758 | if (stat_config.metric_only && stat_config.run_count > 1) { |
54b50916 AK |
1759 | fprintf(stderr, "--metric-only is not supported with -r\n"); |
1760 | goto out; | |
1761 | } | |
1762 | ||
54ac0b1b | 1763 | if (stat_config.walltime_run_table && stat_config.run_count <= 1) { |
e55c14af JO |
1764 | fprintf(stderr, "--table is only supported with -r\n"); |
1765 | parse_options_usage(stat_usage, stat_options, "r", 1); | |
1766 | parse_options_usage(NULL, stat_options, "table", 0); | |
1767 | goto out; | |
1768 | } | |
1769 | ||
fc3e4d07 SE |
1770 | if (output_fd < 0) { |
1771 | fprintf(stderr, "argument to --log-fd must be a > 0\n"); | |
e0547311 | 1772 | parse_options_usage(stat_usage, stat_options, "log-fd", 0); |
cc03c542 | 1773 | goto out; |
fc3e4d07 SE |
1774 | } |
1775 | ||
4aa9015f SE |
1776 | if (!output) { |
1777 | struct timespec tm; | |
1778 | mode = append_file ? "a" : "w"; | |
1779 | ||
1780 | output = fopen(output_name, mode); | |
1781 | if (!output) { | |
1782 | perror("failed to create output file"); | |
fceda7fe | 1783 | return -1; |
4aa9015f SE |
1784 | } |
1785 | clock_gettime(CLOCK_REALTIME, &tm); | |
1786 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
fc3e4d07 | 1787 | } else if (output_fd > 0) { |
56f3bae7 JC |
1788 | mode = append_file ? "a" : "w"; |
1789 | output = fdopen(output_fd, mode); | |
1790 | if (!output) { | |
1791 | perror("Failed opening logfd"); | |
1792 | return -errno; | |
1793 | } | |
4aa9015f SE |
1794 | } |
1795 | ||
5821522e JO |
1796 | stat_config.output = output; |
1797 | ||
d7470b6a SE |
1798 | /* |
1799 | * let the spreadsheet do the pretty-printing | |
1800 | */ | |
fa7070a3 | 1801 | if (stat_config.csv_output) { |
61a9f324 | 1802 | /* User explicitly passed -B? */ |
d7470b6a SE |
1803 | if (big_num_opt == 1) { |
1804 | fprintf(stderr, "-B option not supported with -x\n"); | |
e0547311 JO |
1805 | parse_options_usage(stat_usage, stat_options, "B", 1); |
1806 | parse_options_usage(NULL, stat_options, "x", 1); | |
cc03c542 | 1807 | goto out; |
d7470b6a | 1808 | } else /* Nope, so disable big number formatting */ |
34ff0866 | 1809 | stat_config.big_num = false; |
d7470b6a | 1810 | } else if (big_num_opt == 0) /* User passed --no-big-num */ |
34ff0866 | 1811 | stat_config.big_num = false; |
d7470b6a | 1812 | |
e3ba76de | 1813 | setup_system_wide(argc); |
ac3063bd | 1814 | |
0ce2da14 JO |
1815 | /* |
1816 | * Display user/system times only for single | |
1817 | * run and when there's specified tracee. | |
1818 | */ | |
d97ae04b | 1819 | if ((stat_config.run_count == 1) && target__none(&target)) |
8897a891 | 1820 | stat_config.ru_display = true; |
0ce2da14 | 1821 | |
d97ae04b | 1822 | if (stat_config.run_count < 0) { |
cc03c542 | 1823 | pr_err("Run count must be a positive number\n"); |
e0547311 | 1824 | parse_options_usage(stat_usage, stat_options, "r", 1); |
cc03c542 | 1825 | goto out; |
d97ae04b | 1826 | } else if (stat_config.run_count == 0) { |
a7e191c3 | 1827 | forever = true; |
d97ae04b | 1828 | stat_config.run_count = 1; |
a7e191c3 | 1829 | } |
ddcacfa0 | 1830 | |
54ac0b1b JO |
1831 | if (stat_config.walltime_run_table) { |
1832 | stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); | |
1833 | if (!stat_config.walltime_run) { | |
e55c14af JO |
1834 | pr_err("failed to setup -r option"); |
1835 | goto out; | |
1836 | } | |
1837 | } | |
1838 | ||
1d9f8d1b JY |
1839 | if ((stat_config.aggr_mode == AGGR_THREAD) && |
1840 | !target__has_task(&target)) { | |
1841 | if (!target.system_wide || target.cpu_list) { | |
1842 | fprintf(stderr, "The --per-thread option is only " | |
1843 | "available when monitoring via -p -t -a " | |
1844 | "options or only --per-thread.\n"); | |
1845 | parse_options_usage(NULL, stat_options, "p", 1); | |
1846 | parse_options_usage(NULL, stat_options, "t", 1); | |
1847 | goto out; | |
1848 | } | |
32b8af82 JO |
1849 | } |
1850 | ||
1851 | /* | |
1852 | * no_aggr, cgroup are for system-wide only | |
1853 | * --per-thread is aggregated per thread, we dont mix it with cpu mode | |
1854 | */ | |
421a50f3 JO |
1855 | if (((stat_config.aggr_mode != AGGR_GLOBAL && |
1856 | stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) && | |
602ad878 | 1857 | !target__has_cpu(&target)) { |
023695d9 SE |
1858 | fprintf(stderr, "both cgroup and no-aggregation " |
1859 | "modes only available in system-wide mode\n"); | |
1860 | ||
e0547311 JO |
1861 | parse_options_usage(stat_usage, stat_options, "G", 1); |
1862 | parse_options_usage(NULL, stat_options, "A", 1); | |
1863 | parse_options_usage(NULL, stat_options, "a", 1); | |
cc03c542 | 1864 | goto out; |
d7e7a451 SE |
1865 | } |
1866 | ||
2cba3ffb IM |
1867 | if (add_default_attributes()) |
1868 | goto out; | |
ddcacfa0 | 1869 | |
602ad878 | 1870 | target__validate(&target); |
5c98d466 | 1871 | |
1d9f8d1b JY |
1872 | if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) |
1873 | target.per_thread = true; | |
1874 | ||
77a6f014 | 1875 | if (perf_evlist__create_maps(evsel_list, &target) < 0) { |
602ad878 | 1876 | if (target__has_task(&target)) { |
77a6f014 | 1877 | pr_err("Problems finding threads of monitor\n"); |
e0547311 JO |
1878 | parse_options_usage(stat_usage, stat_options, "p", 1); |
1879 | parse_options_usage(NULL, stat_options, "t", 1); | |
602ad878 | 1880 | } else if (target__has_cpu(&target)) { |
77a6f014 | 1881 | perror("failed to parse CPUs map"); |
e0547311 JO |
1882 | parse_options_usage(stat_usage, stat_options, "C", 1); |
1883 | parse_options_usage(NULL, stat_options, "a", 1); | |
cc03c542 NK |
1884 | } |
1885 | goto out; | |
60d567e2 | 1886 | } |
32b8af82 JO |
1887 | |
1888 | /* | |
1889 | * Initialize thread_map with comm names, | |
1890 | * so we could print it out on output. | |
1891 | */ | |
56739444 | 1892 | if (stat_config.aggr_mode == AGGR_THREAD) { |
03617c22 | 1893 | thread_map__read_comms(evsel_list->core.threads); |
56739444 JY |
1894 | if (target.system_wide) { |
1895 | if (runtime_stat_new(&stat_config, | |
a2f354e3 | 1896 | perf_thread_map__nr(evsel_list->core.threads))) { |
56739444 JY |
1897 | goto out; |
1898 | } | |
1899 | } | |
1900 | } | |
32b8af82 | 1901 | |
db06a269 | 1902 | if (stat_config.times && interval) |
1903 | interval_count = true; | |
1904 | else if (stat_config.times && !interval) { | |
1905 | pr_err("interval-count option should be used together with " | |
1906 | "interval-print.\n"); | |
1907 | parse_options_usage(stat_usage, stat_options, "interval-count", 0); | |
1908 | parse_options_usage(stat_usage, stat_options, "I", 1); | |
1909 | goto out; | |
1910 | } | |
c45c6ea2 | 1911 | |
f1f8ad52 | 1912 | if (timeout && timeout < 100) { |
1913 | if (timeout < 10) { | |
1914 | pr_err("timeout must be >= 10ms.\n"); | |
1915 | parse_options_usage(stat_usage, stat_options, "timeout", 0); | |
1916 | goto out; | |
1917 | } else | |
1918 | pr_warning("timeout < 100ms. " | |
1919 | "The overhead percentage could be high in some cases. " | |
1920 | "Please proceed with caution.\n"); | |
1921 | } | |
1922 | if (timeout && interval) { | |
1923 | pr_err("timeout option is not supported with interval-print.\n"); | |
1924 | parse_options_usage(stat_usage, stat_options, "timeout", 0); | |
1925 | parse_options_usage(stat_usage, stat_options, "I", 1); | |
1926 | goto out; | |
1927 | } | |
1928 | ||
d134ffb9 | 1929 | if (perf_evlist__alloc_stats(evsel_list, interval)) |
03ad9747 | 1930 | goto out; |
d6d901c2 | 1931 | |
86ee6e18 | 1932 | if (perf_stat_init_aggr_mode()) |
03ad9747 | 1933 | goto out; |
86ee6e18 | 1934 | |
7d9ad16a JO |
1935 | /* |
1936 | * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless | |
1937 | * while avoiding that older tools show confusing messages. | |
1938 | * | |
1939 | * However for pipe sessions we need to keep it zero, | |
1940 | * because script's perf_evsel__check_attr is triggered | |
1941 | * by attr->sample_type != 0, and we can't run it on | |
1942 | * stat sessions. | |
1943 | */ | |
1944 | stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); | |
1945 | ||
58d7e993 IM |
1946 | /* |
1947 | * We dont want to block the signals - that would cause | |
1948 | * child tasks to inherit that and Ctrl-C would not work. | |
1949 | * What we want is for Ctrl-C to work in the exec()-ed | |
1950 | * task, but being ignored by perf stat itself: | |
1951 | */ | |
f7b7c26e | 1952 | atexit(sig_atexit); |
a7e191c3 FD |
1953 | if (!forever) |
1954 | signal(SIGINT, skip_signal); | |
13370a9b | 1955 | signal(SIGCHLD, skip_signal); |
58d7e993 IM |
1956 | signal(SIGALRM, skip_signal); |
1957 | signal(SIGABRT, skip_signal); | |
1958 | ||
42202dd5 | 1959 | status = 0; |
d97ae04b JO |
1960 | for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { |
1961 | if (stat_config.run_count != 1 && verbose > 0) | |
4aa9015f SE |
1962 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1963 | run_idx + 1); | |
f9cef0a9 | 1964 | |
e55c14af | 1965 | status = run_perf_stat(argc, argv, run_idx); |
a7e191c3 | 1966 | if (forever && status != -1) { |
d4f63a47 | 1967 | print_counters(NULL, argc, argv); |
254ecbc7 | 1968 | perf_stat__reset_stats(); |
a7e191c3 | 1969 | } |
42202dd5 IM |
1970 | } |
1971 | ||
a7e191c3 | 1972 | if (!forever && status != -1 && !interval) |
d4f63a47 | 1973 | print_counters(NULL, argc, argv); |
d134ffb9 | 1974 | |
4979d0c7 JO |
1975 | if (STAT_RECORD) { |
1976 | /* | |
1977 | * We synthesize the kernel mmap record just so that older tools | |
1978 | * don't emit warnings about not being able to resolve symbols | |
1979 | * due to /proc/sys/kernel/kptr_restrict settings and instear provide | |
1980 | * a saner message about no samples being in the perf.data file. | |
1981 | * | |
1982 | * This also serves to suppress a warning about f_header.data.size == 0 | |
8b99b1a4 JO |
1983 | * in header.c at the moment 'perf stat record' gets introduced, which |
1984 | * is not really needed once we start adding the stat specific PERF_RECORD_ | |
1985 | * records, but the need to suppress the kptr_restrict messages in older | |
1986 | * tools remain -acme | |
4979d0c7 | 1987 | */ |
8ceb41d7 | 1988 | int fd = perf_data__fd(&perf_stat.data); |
4979d0c7 JO |
1989 | int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, |
1990 | process_synthesized_event, | |
1991 | &perf_stat.session->machines.host); | |
1992 | if (err) { | |
1993 | pr_warning("Couldn't synthesize the kernel mmap record, harmless, " | |
1994 | "older tools may produce warnings about this file\n."); | |
1995 | } | |
1996 | ||
7aad0c32 JO |
1997 | if (!interval) { |
1998 | if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) | |
1999 | pr_err("failed to write stat round event\n"); | |
2000 | } | |
2001 | ||
8ceb41d7 | 2002 | if (!perf_stat.data.is_pipe) { |
664c98d4 JO |
2003 | perf_stat.session->header.data_size += perf_stat.bytes_written; |
2004 | perf_session__write_header(perf_stat.session, evsel_list, fd, true); | |
2005 | } | |
4979d0c7 | 2006 | |
750b4ede | 2007 | evlist__close(evsel_list); |
4979d0c7 JO |
2008 | perf_session__delete(perf_stat.session); |
2009 | } | |
2010 | ||
544c2ae7 | 2011 | perf_stat__exit_aggr_mode(); |
d134ffb9 | 2012 | perf_evlist__free_stats(evsel_list); |
0015e2e1 | 2013 | out: |
d8f9da24 | 2014 | zfree(&stat_config.walltime_run); |
e55c14af | 2015 | |
daefd0bc KL |
2016 | if (smi_cost && smi_reset) |
2017 | sysfs__write_int(FREEZE_ON_SMI_PATH, 0); | |
2018 | ||
c12995a5 | 2019 | evlist__delete(evsel_list); |
56739444 JY |
2020 | |
2021 | runtime_stat_delete(&stat_config); | |
2022 | ||
42202dd5 | 2023 | return status; |
ddcacfa0 | 2024 | } |