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