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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * builtin-stat.c4 *5 * Builtin stat command: Give a precise performance counters summary6 * overview about any workload, CPU or specific PID.7 *8 * Sample output:9 10 $ perf stat ./hackbench 1011 12 Time: 0.11813 14 Performance counter stats for './hackbench 10':15 16 1708.761321 task-clock # 11.037 CPUs utilized17 41,190 context-switches # 0.024 M/sec18 6,735 CPU-migrations # 0.004 M/sec19 17,318 page-faults # 0.010 M/sec20 5,205,202,243 cycles # 3.046 GHz21 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle22 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle23 2,603,501,247 instructions # 0.50 insns per cycle24 # 1.48 stalled cycles per insn25 484,357,498 branches # 283.455 M/sec26 6,388,934 branch-misses # 1.32% of all branches27 28 0.154822978 seconds time elapsed29 30 *31 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>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>40 * Jaswinder Singh Rajput <jaswinder@kernel.org>41 */42 43#include "builtin.h"44#include "util/cgroup.h"45#include <subcmd/parse-options.h>46#include "util/parse-events.h"47#include "util/pmus.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/topdown.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 "util/affinity.h"69#include "util/pfm.h"70#include "util/bpf_counter.h"71#include "util/iostat.h"72#include "util/util.h"73#include "util/intel-tpebs.h"74#include "asm/bug.h"75 76#include <linux/time64.h>77#include <linux/zalloc.h>78#include <api/fs/fs.h>79#include <errno.h>80#include <signal.h>81#include <stdlib.h>82#include <sys/prctl.h>83#include <inttypes.h>84#include <locale.h>85#include <math.h>86#include <sys/types.h>87#include <sys/stat.h>88#include <sys/wait.h>89#include <unistd.h>90#include <sys/time.h>91#include <sys/resource.h>92#include <linux/err.h>93 94#include <linux/ctype.h>95#include <perf/evlist.h>96#include <internal/threadmap.h>97 98#define DEFAULT_SEPARATOR " "99#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"100 101static void print_counters(struct timespec *ts, int argc, const char **argv);102 103static struct evlist *evsel_list;104static struct parse_events_option_args parse_events_option_args = {105 .evlistp = &evsel_list,106};107 108static bool all_counters_use_bpf = true;109 110static struct target target = {111 .uid = UINT_MAX,112};113 114#define METRIC_ONLY_LEN 20115 116static volatile sig_atomic_t child_pid = -1;117static int detailed_run = 0;118static bool transaction_run;119static bool topdown_run = false;120static bool smi_cost = false;121static bool smi_reset = false;122static int big_num_opt = -1;123static const char *pre_cmd = NULL;124static const char *post_cmd = NULL;125static bool sync_run = false;126static bool forever = false;127static bool force_metric_only = false;128static struct timespec ref_time;129static bool append_file;130static bool interval_count;131static const char *output_name;132static int output_fd;133static char *metrics;134 135struct perf_stat {136 bool record;137 struct perf_data data;138 struct perf_session *session;139 u64 bytes_written;140 struct perf_tool tool;141 bool maps_allocated;142 struct perf_cpu_map *cpus;143 struct perf_thread_map *threads;144 enum aggr_mode aggr_mode;145 u32 aggr_level;146};147 148static struct perf_stat perf_stat;149#define STAT_RECORD perf_stat.record150 151static volatile sig_atomic_t done = 0;152 153static struct perf_stat_config stat_config = {154 .aggr_mode = AGGR_GLOBAL,155 .aggr_level = MAX_CACHE_LVL + 1,156 .scale = true,157 .unit_width = 4, /* strlen("unit") */158 .run_count = 1,159 .metric_only_len = METRIC_ONLY_LEN,160 .walltime_nsecs_stats = &walltime_nsecs_stats,161 .ru_stats = &ru_stats,162 .big_num = true,163 .ctl_fd = -1,164 .ctl_fd_ack = -1,165 .iostat_run = false,166};167 168/* Options set from the command line. */169struct opt_aggr_mode {170 bool node, socket, die, cluster, cache, core, thread, no_aggr;171};172 173/* Turn command line option into most generic aggregation mode setting. */174static enum aggr_mode opt_aggr_mode_to_aggr_mode(struct opt_aggr_mode *opt_mode)175{176 enum aggr_mode mode = AGGR_GLOBAL;177 178 if (opt_mode->node)179 mode = AGGR_NODE;180 if (opt_mode->socket)181 mode = AGGR_SOCKET;182 if (opt_mode->die)183 mode = AGGR_DIE;184 if (opt_mode->cluster)185 mode = AGGR_CLUSTER;186 if (opt_mode->cache)187 mode = AGGR_CACHE;188 if (opt_mode->core)189 mode = AGGR_CORE;190 if (opt_mode->thread)191 mode = AGGR_THREAD;192 if (opt_mode->no_aggr)193 mode = AGGR_NONE;194 return mode;195}196 197static void evlist__check_cpu_maps(struct evlist *evlist)198{199 struct evsel *evsel, *warned_leader = NULL;200 201 evlist__for_each_entry(evlist, evsel) {202 struct evsel *leader = evsel__leader(evsel);203 204 /* Check that leader matches cpus with each member. */205 if (leader == evsel)206 continue;207 if (perf_cpu_map__equal(leader->core.cpus, evsel->core.cpus))208 continue;209 210 /* If there's mismatch disable the group and warn user. */211 if (warned_leader != leader) {212 char buf[200];213 214 pr_warning("WARNING: grouped events cpus do not match.\n"215 "Events with CPUs not matching the leader will "216 "be removed from the group.\n");217 evsel__group_desc(leader, buf, sizeof(buf));218 pr_warning(" %s\n", buf);219 warned_leader = leader;220 }221 if (verbose > 0) {222 char buf[200];223 224 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));225 pr_warning(" %s: %s\n", leader->name, buf);226 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));227 pr_warning(" %s: %s\n", evsel->name, buf);228 }229 230 evsel__remove_from_group(evsel, leader);231 }232}233 234static inline void diff_timespec(struct timespec *r, struct timespec *a,235 struct timespec *b)236{237 r->tv_sec = a->tv_sec - b->tv_sec;238 if (a->tv_nsec < b->tv_nsec) {239 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;240 r->tv_sec--;241 } else {242 r->tv_nsec = a->tv_nsec - b->tv_nsec ;243 }244}245 246static void perf_stat__reset_stats(void)247{248 evlist__reset_stats(evsel_list);249 perf_stat__reset_shadow_stats();250}251 252static int process_synthesized_event(const struct perf_tool *tool __maybe_unused,253 union perf_event *event,254 struct perf_sample *sample __maybe_unused,255 struct machine *machine __maybe_unused)256{257 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {258 pr_err("failed to write perf data, error: %m\n");259 return -1;260 }261 262 perf_stat.bytes_written += event->header.size;263 return 0;264}265 266static int write_stat_round_event(u64 tm, u64 type)267{268 return perf_event__synthesize_stat_round(NULL, tm, type,269 process_synthesized_event,270 NULL);271}272 273#define WRITE_STAT_ROUND_EVENT(time, interval) \274 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)275 276#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)277 278static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread,279 struct perf_counts_values *count)280{281 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);282 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);283 284 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,285 process_synthesized_event, NULL);286}287 288static int read_single_counter(struct evsel *counter, int cpu_map_idx, int thread)289{290 int err = evsel__read_counter(counter, cpu_map_idx, thread);291 292 /*293 * Reading user and system time will fail when the process294 * terminates. Use the wait4 values in that case.295 */296 if (err && cpu_map_idx == 0 &&297 (evsel__tool_event(counter) == PERF_TOOL_USER_TIME ||298 evsel__tool_event(counter) == PERF_TOOL_SYSTEM_TIME)) {299 u64 val, *start_time;300 struct perf_counts_values *count =301 perf_counts(counter->counts, cpu_map_idx, thread);302 303 start_time = xyarray__entry(counter->start_times, cpu_map_idx, thread);304 if (evsel__tool_event(counter) == PERF_TOOL_USER_TIME)305 val = ru_stats.ru_utime_usec_stat.mean;306 else307 val = ru_stats.ru_stime_usec_stat.mean;308 count->ena = count->run = *start_time + val;309 count->val = val;310 return 0;311 }312 return err;313}314 315/*316 * Read out the results of a single counter:317 * do not aggregate counts across CPUs in system-wide mode318 */319static int read_counter_cpu(struct evsel *counter, int cpu_map_idx)320{321 int nthreads = perf_thread_map__nr(evsel_list->core.threads);322 int thread;323 324 if (!counter->supported)325 return -ENOENT;326 327 for (thread = 0; thread < nthreads; thread++) {328 struct perf_counts_values *count;329 330 count = perf_counts(counter->counts, cpu_map_idx, thread);331 332 /*333 * The leader's group read loads data into its group members334 * (via evsel__read_counter()) and sets their count->loaded.335 */336 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) &&337 read_single_counter(counter, cpu_map_idx, thread)) {338 counter->counts->scaled = -1;339 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;340 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;341 return -1;342 }343 344 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);345 346 if (STAT_RECORD) {347 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) {348 pr_err("failed to write stat event\n");349 return -1;350 }351 }352 353 if (verbose > 1) {354 fprintf(stat_config.output,355 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",356 evsel__name(counter),357 perf_cpu_map__cpu(evsel__cpus(counter),358 cpu_map_idx).cpu,359 count->val, count->ena, count->run);360 }361 }362 363 return 0;364}365 366static int read_affinity_counters(void)367{368 struct evlist_cpu_iterator evlist_cpu_itr;369 struct affinity saved_affinity, *affinity;370 371 if (all_counters_use_bpf)372 return 0;373 374 if (!target__has_cpu(&target) || target__has_per_thread(&target))375 affinity = NULL;376 else if (affinity__setup(&saved_affinity) < 0)377 return -1;378 else379 affinity = &saved_affinity;380 381 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {382 struct evsel *counter = evlist_cpu_itr.evsel;383 384 if (evsel__is_bpf(counter))385 continue;386 387 if (!counter->err)388 counter->err = read_counter_cpu(counter, evlist_cpu_itr.cpu_map_idx);389 }390 if (affinity)391 affinity__cleanup(&saved_affinity);392 393 return 0;394}395 396static int read_bpf_map_counters(void)397{398 struct evsel *counter;399 int err;400 401 evlist__for_each_entry(evsel_list, counter) {402 if (!evsel__is_bpf(counter))403 continue;404 405 err = bpf_counter__read(counter);406 if (err)407 return err;408 }409 return 0;410}411 412static int read_counters(void)413{414 if (!stat_config.stop_read_counter) {415 if (read_bpf_map_counters() ||416 read_affinity_counters())417 return -1;418 }419 return 0;420}421 422static void process_counters(void)423{424 struct evsel *counter;425 426 evlist__for_each_entry(evsel_list, counter) {427 if (counter->err)428 pr_debug("failed to read counter %s\n", counter->name);429 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))430 pr_warning("failed to process counter %s\n", counter->name);431 counter->err = 0;432 }433 434 perf_stat_merge_counters(&stat_config, evsel_list);435 perf_stat_process_percore(&stat_config, evsel_list);436}437 438static void process_interval(void)439{440 struct timespec ts, rs;441 442 clock_gettime(CLOCK_MONOTONIC, &ts);443 diff_timespec(&rs, &ts, &ref_time);444 445 evlist__reset_aggr_stats(evsel_list);446 447 if (read_counters() == 0)448 process_counters();449 450 if (STAT_RECORD) {451 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))452 pr_err("failed to write stat round event\n");453 }454 455 init_stats(&walltime_nsecs_stats);456 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL);457 print_counters(&rs, 0, NULL);458}459 460static bool handle_interval(unsigned int interval, int *times)461{462 if (interval) {463 process_interval();464 if (interval_count && !(--(*times)))465 return true;466 }467 return false;468}469 470static int enable_counters(void)471{472 struct evsel *evsel;473 int err;474 475 evlist__for_each_entry(evsel_list, evsel) {476 if (!evsel__is_bpf(evsel))477 continue;478 479 err = bpf_counter__enable(evsel);480 if (err)481 return err;482 }483 484 if (!target__enable_on_exec(&target)) {485 if (!all_counters_use_bpf)486 evlist__enable(evsel_list);487 }488 return 0;489}490 491static void disable_counters(void)492{493 struct evsel *counter;494 495 /*496 * If we don't have tracee (attaching to task or cpu), counters may497 * still be running. To get accurate group ratios, we must stop groups498 * from counting before reading their constituent counters.499 */500 if (!target__none(&target)) {501 evlist__for_each_entry(evsel_list, counter)502 bpf_counter__disable(counter);503 if (!all_counters_use_bpf)504 evlist__disable(evsel_list);505 }506}507 508static volatile sig_atomic_t workload_exec_errno;509 510/*511 * evlist__prepare_workload will send a SIGUSR1512 * if the fork fails, since we asked by setting its513 * want_signal to true.514 */515static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,516 void *ucontext __maybe_unused)517{518 workload_exec_errno = info->si_value.sival_int;519}520 521static bool evsel__should_store_id(struct evsel *counter)522{523 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;524}525 526static bool is_target_alive(struct target *_target,527 struct perf_thread_map *threads)528{529 struct stat st;530 int i;531 532 if (!target__has_task(_target))533 return true;534 535 for (i = 0; i < threads->nr; i++) {536 char path[PATH_MAX];537 538 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),539 threads->map[i].pid);540 541 if (!stat(path, &st))542 return true;543 }544 545 return false;546}547 548static void process_evlist(struct evlist *evlist, unsigned int interval)549{550 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;551 552 if (evlist__ctlfd_process(evlist, &cmd) > 0) {553 switch (cmd) {554 case EVLIST_CTL_CMD_ENABLE:555 fallthrough;556 case EVLIST_CTL_CMD_DISABLE:557 if (interval)558 process_interval();559 break;560 case EVLIST_CTL_CMD_SNAPSHOT:561 case EVLIST_CTL_CMD_ACK:562 case EVLIST_CTL_CMD_UNSUPPORTED:563 case EVLIST_CTL_CMD_EVLIST:564 case EVLIST_CTL_CMD_STOP:565 case EVLIST_CTL_CMD_PING:566 default:567 break;568 }569 }570}571 572static void compute_tts(struct timespec *time_start, struct timespec *time_stop,573 int *time_to_sleep)574{575 int tts = *time_to_sleep;576 struct timespec time_diff;577 578 diff_timespec(&time_diff, time_stop, time_start);579 580 tts -= time_diff.tv_sec * MSEC_PER_SEC +581 time_diff.tv_nsec / NSEC_PER_MSEC;582 583 if (tts < 0)584 tts = 0;585 586 *time_to_sleep = tts;587}588 589static int dispatch_events(bool forks, int timeout, int interval, int *times)590{591 int child_exited = 0, status = 0;592 int time_to_sleep, sleep_time;593 struct timespec time_start, time_stop;594 595 if (interval)596 sleep_time = interval;597 else if (timeout)598 sleep_time = timeout;599 else600 sleep_time = 1000;601 602 time_to_sleep = sleep_time;603 604 while (!done) {605 if (forks)606 child_exited = waitpid(child_pid, &status, WNOHANG);607 else608 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;609 610 if (child_exited)611 break;612 613 clock_gettime(CLOCK_MONOTONIC, &time_start);614 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */615 if (timeout || handle_interval(interval, times))616 break;617 time_to_sleep = sleep_time;618 } else { /* fd revent */619 process_evlist(evsel_list, interval);620 clock_gettime(CLOCK_MONOTONIC, &time_stop);621 compute_tts(&time_start, &time_stop, &time_to_sleep);622 }623 }624 625 return status;626}627 628enum counter_recovery {629 COUNTER_SKIP,630 COUNTER_RETRY,631 COUNTER_FATAL,632};633 634static enum counter_recovery stat_handle_error(struct evsel *counter)635{636 char msg[BUFSIZ];637 /*638 * PPC returns ENXIO for HW counters until 2.6.37639 * (behavior changed with commit b0a873e).640 */641 if (errno == EINVAL || errno == ENOSYS ||642 errno == ENOENT || errno == EOPNOTSUPP ||643 errno == ENXIO) {644 if (verbose > 0)645 ui__warning("%s event is not supported by the kernel.\n",646 evsel__name(counter));647 counter->supported = false;648 /*649 * errored is a sticky flag that means one of the counter's650 * cpu event had a problem and needs to be reexamined.651 */652 counter->errored = true;653 654 if ((evsel__leader(counter) != counter) ||655 !(counter->core.leader->nr_members > 1))656 return COUNTER_SKIP;657 } else if (evsel__fallback(counter, &target, errno, msg, sizeof(msg))) {658 if (verbose > 0)659 ui__warning("%s\n", msg);660 return COUNTER_RETRY;661 } else if (target__has_per_thread(&target) &&662 evsel_list->core.threads &&663 evsel_list->core.threads->err_thread != -1) {664 /*665 * For global --per-thread case, skip current666 * error thread.667 */668 if (!thread_map__remove(evsel_list->core.threads,669 evsel_list->core.threads->err_thread)) {670 evsel_list->core.threads->err_thread = -1;671 return COUNTER_RETRY;672 }673 } else if (counter->skippable) {674 if (verbose > 0)675 ui__warning("skipping event %s that kernel failed to open .\n",676 evsel__name(counter));677 counter->supported = false;678 counter->errored = true;679 return COUNTER_SKIP;680 }681 682 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));683 ui__error("%s\n", msg);684 685 if (child_pid != -1)686 kill(child_pid, SIGTERM);687 688 tpebs_delete();689 690 return COUNTER_FATAL;691}692 693static int __run_perf_stat(int argc, const char **argv, int run_idx)694{695 int interval = stat_config.interval;696 int times = stat_config.times;697 int timeout = stat_config.timeout;698 char msg[BUFSIZ];699 unsigned long long t0, t1;700 struct evsel *counter;701 size_t l;702 int status = 0;703 const bool forks = (argc > 0);704 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;705 struct evlist_cpu_iterator evlist_cpu_itr;706 struct affinity saved_affinity, *affinity = NULL;707 int err;708 bool second_pass = false;709 710 if (forks) {711 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {712 perror("failed to prepare workload");713 return -1;714 }715 child_pid = evsel_list->workload.pid;716 }717 718 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {719 if (affinity__setup(&saved_affinity) < 0)720 return -1;721 affinity = &saved_affinity;722 }723 724 evlist__for_each_entry(evsel_list, counter) {725 counter->reset_group = false;726 if (bpf_counter__load(counter, &target))727 return -1;728 if (!(evsel__is_bperf(counter)))729 all_counters_use_bpf = false;730 }731 732 evlist__reset_aggr_stats(evsel_list);733 734 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {735 counter = evlist_cpu_itr.evsel;736 737 /*738 * bperf calls evsel__open_per_cpu() in bperf__load(), so739 * no need to call it again here.740 */741 if (target.use_bpf)742 break;743 744 if (counter->reset_group || counter->errored)745 continue;746 if (evsel__is_bperf(counter))747 continue;748try_again:749 if (create_perf_stat_counter(counter, &stat_config, &target,750 evlist_cpu_itr.cpu_map_idx) < 0) {751 752 /*753 * Weak group failed. We cannot just undo this here754 * because earlier CPUs might be in group mode, and the kernel755 * doesn't support mixing group and non group reads. Defer756 * it to later.757 * Don't close here because we're in the wrong affinity.758 */759 if ((errno == EINVAL || errno == EBADF) &&760 evsel__leader(counter) != counter &&761 counter->weak_group) {762 evlist__reset_weak_group(evsel_list, counter, false);763 assert(counter->reset_group);764 second_pass = true;765 continue;766 }767 768 switch (stat_handle_error(counter)) {769 case COUNTER_FATAL:770 return -1;771 case COUNTER_RETRY:772 goto try_again;773 case COUNTER_SKIP:774 continue;775 default:776 break;777 }778 779 }780 counter->supported = true;781 }782 783 if (second_pass) {784 /*785 * Now redo all the weak group after closing them,786 * and also close errored counters.787 */788 789 /* First close errored or weak retry */790 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {791 counter = evlist_cpu_itr.evsel;792 793 if (!counter->reset_group && !counter->errored)794 continue;795 796 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);797 }798 /* Now reopen weak */799 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {800 counter = evlist_cpu_itr.evsel;801 802 if (!counter->reset_group)803 continue;804try_again_reset:805 pr_debug2("reopening weak %s\n", evsel__name(counter));806 if (create_perf_stat_counter(counter, &stat_config, &target,807 evlist_cpu_itr.cpu_map_idx) < 0) {808 809 switch (stat_handle_error(counter)) {810 case COUNTER_FATAL:811 return -1;812 case COUNTER_RETRY:813 goto try_again_reset;814 case COUNTER_SKIP:815 continue;816 default:817 break;818 }819 }820 counter->supported = true;821 }822 }823 affinity__cleanup(affinity);824 825 evlist__for_each_entry(evsel_list, counter) {826 if (!counter->supported) {827 perf_evsel__free_fd(&counter->core);828 continue;829 }830 831 l = strlen(counter->unit);832 if (l > stat_config.unit_width)833 stat_config.unit_width = l;834 835 if (evsel__should_store_id(counter) &&836 evsel__store_ids(counter, evsel_list))837 return -1;838 }839 840 if (evlist__apply_filters(evsel_list, &counter, &target)) {841 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",842 counter->filter, evsel__name(counter), errno,843 str_error_r(errno, msg, sizeof(msg)));844 return -1;845 }846 847 if (STAT_RECORD) {848 int fd = perf_data__fd(&perf_stat.data);849 850 if (is_pipe) {851 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));852 } else {853 err = perf_session__write_header(perf_stat.session, evsel_list,854 fd, false);855 }856 857 if (err < 0)858 return err;859 860 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,861 process_synthesized_event, is_pipe);862 if (err < 0)863 return err;864 }865 866 if (target.initial_delay) {867 pr_info(EVLIST_DISABLED_MSG);868 } else {869 err = enable_counters();870 if (err)871 return -1;872 }873 874 /* Exec the command, if any */875 if (forks)876 evlist__start_workload(evsel_list);877 878 if (target.initial_delay > 0) {879 usleep(target.initial_delay * USEC_PER_MSEC);880 err = enable_counters();881 if (err)882 return -1;883 884 pr_info(EVLIST_ENABLED_MSG);885 }886 887 t0 = rdclock();888 clock_gettime(CLOCK_MONOTONIC, &ref_time);889 890 if (forks) {891 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))892 status = dispatch_events(forks, timeout, interval, ×);893 if (child_pid != -1) {894 if (timeout)895 kill(child_pid, SIGTERM);896 wait4(child_pid, &status, 0, &stat_config.ru_data);897 }898 899 if (workload_exec_errno) {900 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));901 pr_err("Workload failed: %s\n", emsg);902 return -1;903 }904 905 if (WIFSIGNALED(status))906 psignal(WTERMSIG(status), argv[0]);907 } else {908 status = dispatch_events(forks, timeout, interval, ×);909 }910 911 disable_counters();912 913 t1 = rdclock();914 915 if (stat_config.walltime_run_table)916 stat_config.walltime_run[run_idx] = t1 - t0;917 918 if (interval && stat_config.summary) {919 stat_config.interval = 0;920 stat_config.stop_read_counter = true;921 init_stats(&walltime_nsecs_stats);922 update_stats(&walltime_nsecs_stats, t1 - t0);923 924 evlist__copy_prev_raw_counts(evsel_list);925 evlist__reset_prev_raw_counts(evsel_list);926 evlist__reset_aggr_stats(evsel_list);927 } else {928 update_stats(&walltime_nsecs_stats, t1 - t0);929 update_rusage_stats(&ru_stats, &stat_config.ru_data);930 }931 932 /*933 * Closing a group leader splits the group, and as we only disable934 * group leaders, results in remaining events becoming enabled. To935 * avoid arbitrary skew, we must read all counters before closing any936 * group leaders.937 */938 if (read_counters() == 0)939 process_counters();940 941 /*942 * We need to keep evsel_list alive, because it's processed943 * later the evsel_list will be closed after.944 */945 if (!STAT_RECORD)946 evlist__close(evsel_list);947 948 return WEXITSTATUS(status);949}950 951static int run_perf_stat(int argc, const char **argv, int run_idx)952{953 int ret;954 955 if (pre_cmd) {956 ret = system(pre_cmd);957 if (ret)958 return ret;959 }960 961 if (sync_run)962 sync();963 964 ret = __run_perf_stat(argc, argv, run_idx);965 if (ret)966 return ret;967 968 if (post_cmd) {969 ret = system(post_cmd);970 if (ret)971 return ret;972 }973 974 return ret;975}976 977static void print_counters(struct timespec *ts, int argc, const char **argv)978{979 /* Do not print anything if we record to the pipe. */980 if (STAT_RECORD && perf_stat.data.is_pipe)981 return;982 if (quiet)983 return;984 985 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);986}987 988static volatile sig_atomic_t signr = -1;989 990static void skip_signal(int signo)991{992 if ((child_pid == -1) || stat_config.interval)993 done = 1;994 995 signr = signo;996 /*997 * render child_pid harmless998 * won't send SIGTERM to a random999 * process in case of race condition1000 * and fast PID recycling1001 */1002 child_pid = -1;1003}1004 1005static void sig_atexit(void)1006{1007 sigset_t set, oset;1008 1009 /*1010 * avoid race condition with SIGCHLD handler1011 * in skip_signal() which is modifying child_pid1012 * goal is to avoid send SIGTERM to a random1013 * process1014 */1015 sigemptyset(&set);1016 sigaddset(&set, SIGCHLD);1017 sigprocmask(SIG_BLOCK, &set, &oset);1018 1019 if (child_pid != -1)1020 kill(child_pid, SIGTERM);1021 1022 sigprocmask(SIG_SETMASK, &oset, NULL);1023 1024 if (signr == -1)1025 return;1026 1027 signal(signr, SIG_DFL);1028 kill(getpid(), signr);1029}1030 1031void perf_stat__set_big_num(int set)1032{1033 stat_config.big_num = (set != 0);1034}1035 1036void perf_stat__set_no_csv_summary(int set)1037{1038 stat_config.no_csv_summary = (set != 0);1039}1040 1041static int stat__set_big_num(const struct option *opt __maybe_unused,1042 const char *s __maybe_unused, int unset)1043{1044 big_num_opt = unset ? 0 : 1;1045 perf_stat__set_big_num(!unset);1046 return 0;1047}1048 1049static int enable_metric_only(const struct option *opt __maybe_unused,1050 const char *s __maybe_unused, int unset)1051{1052 force_metric_only = true;1053 stat_config.metric_only = !unset;1054 return 0;1055}1056 1057static int append_metric_groups(const struct option *opt __maybe_unused,1058 const char *str,1059 int unset __maybe_unused)1060{1061 if (metrics) {1062 char *tmp;1063 1064 if (asprintf(&tmp, "%s,%s", metrics, str) < 0)1065 return -ENOMEM;1066 free(metrics);1067 metrics = tmp;1068 } else {1069 metrics = strdup(str);1070 if (!metrics)1071 return -ENOMEM;1072 }1073 return 0;1074}1075 1076static int parse_control_option(const struct option *opt,1077 const char *str,1078 int unset __maybe_unused)1079{1080 struct perf_stat_config *config = opt->value;1081 1082 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);1083}1084 1085static int parse_stat_cgroups(const struct option *opt,1086 const char *str, int unset)1087{1088 if (stat_config.cgroup_list) {1089 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");1090 return -1;1091 }1092 1093 return parse_cgroups(opt, str, unset);1094}1095 1096static int parse_cputype(const struct option *opt,1097 const char *str,1098 int unset __maybe_unused)1099{1100 const struct perf_pmu *pmu;1101 struct evlist *evlist = *(struct evlist **)opt->value;1102 1103 if (!list_empty(&evlist->core.entries)) {1104 fprintf(stderr, "Must define cputype before events/metrics\n");1105 return -1;1106 }1107 1108 pmu = perf_pmus__pmu_for_pmu_filter(str);1109 if (!pmu) {1110 fprintf(stderr, "--cputype %s is not supported!\n", str);1111 return -1;1112 }1113 parse_events_option_args.pmu_filter = pmu->name;1114 1115 return 0;1116}1117 1118static int parse_cache_level(const struct option *opt,1119 const char *str,1120 int unset __maybe_unused)1121{1122 int level;1123 struct opt_aggr_mode *opt_aggr_mode = (struct opt_aggr_mode *)opt->value;1124 u32 *aggr_level = (u32 *)opt->data;1125 1126 /*1127 * If no string is specified, aggregate based on the topology of1128 * Last Level Cache (LLC). Since the LLC level can change from1129 * architecture to architecture, set level greater than1130 * MAX_CACHE_LVL which will be interpreted as LLC.1131 */1132 if (str == NULL) {1133 level = MAX_CACHE_LVL + 1;1134 goto out;1135 }1136 1137 /*1138 * The format to specify cache level is LX or lX where X is the1139 * cache level.1140 */1141 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) {1142 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",1143 MAX_CACHE_LVL,1144 MAX_CACHE_LVL);1145 return -EINVAL;1146 }1147 1148 level = atoi(&str[1]);1149 if (level < 1) {1150 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",1151 MAX_CACHE_LVL,1152 MAX_CACHE_LVL);1153 return -EINVAL;1154 }1155 1156 if (level > MAX_CACHE_LVL) {1157 pr_err("perf only supports max cache level of %d.\n"1158 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL);1159 return -EINVAL;1160 }1161out:1162 opt_aggr_mode->cache = true;1163 *aggr_level = level;1164 return 0;1165}1166 1167/**1168 * Calculate the cache instance ID from the map in1169 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list1170 * Cache instance ID is the first CPU reported in the shared_cpu_list file.1171 */1172static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)1173{1174 int id;1175 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map);1176 1177 /*1178 * If the map contains no CPU, consider the current CPU to1179 * be the first online CPU in the cache domain else use the1180 * first online CPU of the cache domain as the ID.1181 */1182 id = perf_cpu_map__min(cpu_map).cpu;1183 if (id == -1)1184 id = cpu.cpu;1185 1186 /* Free the perf_cpu_map used to find the cache ID */1187 perf_cpu_map__put(cpu_map);1188 1189 return id;1190}1191 1192/**1193 * cpu__get_cache_id - Returns 0 if successful in populating the1194 * cache level and cache id. Cache level is read from1195 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID1196 * is the first CPU reported by1197 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list1198 */1199static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache)1200{1201 int ret = 0;1202 u32 cache_level = stat_config.aggr_level;1203 struct cpu_cache_level caches[MAX_CACHE_LVL];1204 u32 i = 0, caches_cnt = 0;1205 1206 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;1207 cache->cache = -1;1208 1209 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt);1210 if (ret) {1211 /*1212 * If caches_cnt is not 0, cpu_cache_level data1213 * was allocated when building the topology.1214 * Free the allocated data before returning.1215 */1216 if (caches_cnt)1217 goto free_caches;1218 1219 return ret;1220 }1221 1222 if (!caches_cnt)1223 return -1;1224 1225 /*1226 * Save the data for the highest level if no1227 * level was specified by the user.1228 */1229 if (cache_level > MAX_CACHE_LVL) {1230 int max_level_index = 0;1231 1232 for (i = 1; i < caches_cnt; ++i) {1233 if (caches[i].level > caches[max_level_index].level)1234 max_level_index = i;1235 }1236 1237 cache->cache_lvl = caches[max_level_index].level;1238 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map);1239 1240 /* Reset i to 0 to free entire caches[] */1241 i = 0;1242 goto free_caches;1243 }1244 1245 for (i = 0; i < caches_cnt; ++i) {1246 if (caches[i].level == cache_level) {1247 cache->cache_lvl = cache_level;1248 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);1249 }1250 1251 cpu_cache_level__free(&caches[i]);1252 }1253 1254free_caches:1255 /*1256 * Free all the allocated cpu_cache_level data.1257 */1258 while (i < caches_cnt)1259 cpu_cache_level__free(&caches[i++]);1260 1261 return ret;1262}1263 1264/**1265 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache1266 * level, die and socket populated with the cache instache ID, cache level,1267 * die and socket for cpu. The function signature is compatible with1268 * aggr_cpu_id_get_t.1269 */1270static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data)1271{1272 int ret;1273 struct aggr_cpu_id id;1274 struct perf_cache cache;1275 1276 id = aggr_cpu_id__die(cpu, data);1277 if (aggr_cpu_id__is_empty(&id))1278 return id;1279 1280 ret = cpu__get_cache_details(cpu, &cache);1281 if (ret)1282 return id;1283 1284 id.cache_lvl = cache.cache_lvl;1285 id.cache = cache.cache;1286 return id;1287}1288 1289static const char *const aggr_mode__string[] = {1290 [AGGR_CORE] = "core",1291 [AGGR_CACHE] = "cache",1292 [AGGR_CLUSTER] = "cluster",1293 [AGGR_DIE] = "die",1294 [AGGR_GLOBAL] = "global",1295 [AGGR_NODE] = "node",1296 [AGGR_NONE] = "none",1297 [AGGR_SOCKET] = "socket",1298 [AGGR_THREAD] = "thread",1299 [AGGR_UNSET] = "unset",1300};1301 1302static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,1303 struct perf_cpu cpu)1304{1305 return aggr_cpu_id__socket(cpu, /*data=*/NULL);1306}1307 1308static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,1309 struct perf_cpu cpu)1310{1311 return aggr_cpu_id__die(cpu, /*data=*/NULL);1312}1313 1314static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused,1315 struct perf_cpu cpu)1316{1317 return aggr_cpu_id__cache(cpu, /*data=*/NULL);1318}1319 1320static struct aggr_cpu_id perf_stat__get_cluster(struct perf_stat_config *config __maybe_unused,1321 struct perf_cpu cpu)1322{1323 return aggr_cpu_id__cluster(cpu, /*data=*/NULL);1324}1325 1326static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,1327 struct perf_cpu cpu)1328{1329 return aggr_cpu_id__core(cpu, /*data=*/NULL);1330}1331 1332static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,1333 struct perf_cpu cpu)1334{1335 return aggr_cpu_id__node(cpu, /*data=*/NULL);1336}1337 1338static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,1339 struct perf_cpu cpu)1340{1341 return aggr_cpu_id__global(cpu, /*data=*/NULL);1342}1343 1344static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,1345 struct perf_cpu cpu)1346{1347 return aggr_cpu_id__cpu(cpu, /*data=*/NULL);1348}1349 1350static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,1351 aggr_get_id_t get_id, struct perf_cpu cpu)1352{1353 struct aggr_cpu_id id;1354 1355 /* per-process mode - should use global aggr mode */1356 if (cpu.cpu == -1)1357 return get_id(config, cpu);1358 1359 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))1360 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);1361 1362 id = config->cpus_aggr_map->map[cpu.cpu];1363 return id;1364}1365 1366static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,1367 struct perf_cpu cpu)1368{1369 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);1370}1371 1372static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,1373 struct perf_cpu cpu)1374{1375 return perf_stat__get_aggr(config, perf_stat__get_die, cpu);1376}1377 1378static struct aggr_cpu_id perf_stat__get_cluster_cached(struct perf_stat_config *config,1379 struct perf_cpu cpu)1380{1381 return perf_stat__get_aggr(config, perf_stat__get_cluster, cpu);1382}1383 1384static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config,1385 struct perf_cpu cpu)1386{1387 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu);1388}1389 1390static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,1391 struct perf_cpu cpu)1392{1393 return perf_stat__get_aggr(config, perf_stat__get_core, cpu);1394}1395 1396static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,1397 struct perf_cpu cpu)1398{1399 return perf_stat__get_aggr(config, perf_stat__get_node, cpu);1400}1401 1402static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,1403 struct perf_cpu cpu)1404{1405 return perf_stat__get_aggr(config, perf_stat__get_global, cpu);1406}1407 1408static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,1409 struct perf_cpu cpu)1410{1411 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);1412}1413 1414static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)1415{1416 switch (aggr_mode) {1417 case AGGR_SOCKET:1418 return aggr_cpu_id__socket;1419 case AGGR_DIE:1420 return aggr_cpu_id__die;1421 case AGGR_CLUSTER:1422 return aggr_cpu_id__cluster;1423 case AGGR_CACHE:1424 return aggr_cpu_id__cache;1425 case AGGR_CORE:1426 return aggr_cpu_id__core;1427 case AGGR_NODE:1428 return aggr_cpu_id__node;1429 case AGGR_NONE:1430 return aggr_cpu_id__cpu;1431 case AGGR_GLOBAL:1432 return aggr_cpu_id__global;1433 case AGGR_THREAD:1434 case AGGR_UNSET:1435 case AGGR_MAX:1436 default:1437 return NULL;1438 }1439}1440 1441static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)1442{1443 switch (aggr_mode) {1444 case AGGR_SOCKET:1445 return perf_stat__get_socket_cached;1446 case AGGR_DIE:1447 return perf_stat__get_die_cached;1448 case AGGR_CLUSTER:1449 return perf_stat__get_cluster_cached;1450 case AGGR_CACHE:1451 return perf_stat__get_cache_id_cached;1452 case AGGR_CORE:1453 return perf_stat__get_core_cached;1454 case AGGR_NODE:1455 return perf_stat__get_node_cached;1456 case AGGR_NONE:1457 return perf_stat__get_cpu_cached;1458 case AGGR_GLOBAL:1459 return perf_stat__get_global_cached;1460 case AGGR_THREAD:1461 case AGGR_UNSET:1462 case AGGR_MAX:1463 default:1464 return NULL;1465 }1466}1467 1468static int perf_stat_init_aggr_mode(void)1469{1470 int nr;1471 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);1472 1473 if (get_id) {1474 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;1475 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,1476 get_id, /*data=*/NULL, needs_sort);1477 if (!stat_config.aggr_map) {1478 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);1479 return -1;1480 }1481 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);1482 }1483 1484 if (stat_config.aggr_mode == AGGR_THREAD) {1485 nr = perf_thread_map__nr(evsel_list->core.threads);1486 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);1487 if (stat_config.aggr_map == NULL)1488 return -ENOMEM;1489 1490 for (int s = 0; s < nr; s++) {1491 struct aggr_cpu_id id = aggr_cpu_id__empty();1492 1493 id.thread_idx = s;1494 stat_config.aggr_map->map[s] = id;1495 }1496 return 0;1497 }1498 1499 /*1500 * The evsel_list->cpus is the base we operate on,1501 * taking the highest cpu number to be the size of1502 * the aggregation translate cpumap.1503 */1504 if (!perf_cpu_map__is_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))1505 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;1506 else1507 nr = 0;1508 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);1509 return stat_config.cpus_aggr_map ? 0 : -ENOMEM;1510}1511 1512static void cpu_aggr_map__delete(struct cpu_aggr_map *map)1513{1514 free(map);1515}1516 1517static void perf_stat__exit_aggr_mode(void)1518{1519 cpu_aggr_map__delete(stat_config.aggr_map);1520 cpu_aggr_map__delete(stat_config.cpus_aggr_map);1521 stat_config.aggr_map = NULL;1522 stat_config.cpus_aggr_map = NULL;1523}1524 1525static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)1526{1527 struct perf_env *env = data;1528 struct aggr_cpu_id id = aggr_cpu_id__empty();1529 1530 if (cpu.cpu != -1)1531 id.socket = env->cpu[cpu.cpu].socket_id;1532 1533 return id;1534}1535 1536static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)1537{1538 struct perf_env *env = data;1539 struct aggr_cpu_id id = aggr_cpu_id__empty();1540 1541 if (cpu.cpu != -1) {1542 /*1543 * die_id is relative to socket, so start1544 * with the socket ID and then add die to1545 * make a unique ID.1546 */1547 id.socket = env->cpu[cpu.cpu].socket_id;1548 id.die = env->cpu[cpu.cpu].die_id;1549 }1550 1551 return id;1552}1553 1554static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env,1555 u32 cache_level, struct aggr_cpu_id *id)1556{1557 int i;1558 int caches_cnt = env->caches_cnt;1559 struct cpu_cache_level *caches = env->caches;1560 1561 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;1562 id->cache = -1;1563 1564 if (!caches_cnt)1565 return;1566 1567 for (i = caches_cnt - 1; i > -1; --i) {1568 struct perf_cpu_map *cpu_map;1569 int map_contains_cpu;1570 1571 /*1572 * If user has not specified a level, find the fist level with1573 * the cpu in the map. Since building the map is expensive, do1574 * this only if levels match.1575 */1576 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level)1577 continue;1578 1579 cpu_map = perf_cpu_map__new(caches[i].map);1580 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu);1581 perf_cpu_map__put(cpu_map);1582 1583 if (map_contains_cpu != -1) {1584 id->cache_lvl = caches[i].level;1585 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);1586 return;1587 }1588 }1589}1590 1591static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu,1592 void *data)1593{1594 struct perf_env *env = data;1595 struct aggr_cpu_id id = aggr_cpu_id__empty();1596 1597 if (cpu.cpu != -1) {1598 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level;1599 1600 id.socket = env->cpu[cpu.cpu].socket_id;1601 id.die = env->cpu[cpu.cpu].die_id;1602 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id);1603 }1604 1605 return id;1606}1607 1608static struct aggr_cpu_id perf_env__get_cluster_aggr_by_cpu(struct perf_cpu cpu,1609 void *data)1610{1611 struct perf_env *env = data;1612 struct aggr_cpu_id id = aggr_cpu_id__empty();1613 1614 if (cpu.cpu != -1) {1615 id.socket = env->cpu[cpu.cpu].socket_id;1616 id.die = env->cpu[cpu.cpu].die_id;1617 id.cluster = env->cpu[cpu.cpu].cluster_id;1618 }1619 1620 return id;1621}1622 1623static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)1624{1625 struct perf_env *env = data;1626 struct aggr_cpu_id id = aggr_cpu_id__empty();1627 1628 if (cpu.cpu != -1) {1629 /*1630 * core_id is relative to socket, die and cluster, we need a1631 * global id. So we set socket, die id, cluster id and core id.1632 */1633 id.socket = env->cpu[cpu.cpu].socket_id;1634 id.die = env->cpu[cpu.cpu].die_id;1635 id.cluster = env->cpu[cpu.cpu].cluster_id;1636 id.core = env->cpu[cpu.cpu].core_id;1637 }1638 1639 return id;1640}1641 1642static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)1643{1644 struct perf_env *env = data;1645 struct aggr_cpu_id id = aggr_cpu_id__empty();1646 1647 if (cpu.cpu != -1) {1648 /*1649 * core_id is relative to socket and die,1650 * we need a global id. So we set1651 * socket, die id and core id1652 */1653 id.socket = env->cpu[cpu.cpu].socket_id;1654 id.die = env->cpu[cpu.cpu].die_id;1655 id.core = env->cpu[cpu.cpu].core_id;1656 id.cpu = cpu;1657 }1658 1659 return id;1660}1661 1662static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)1663{1664 struct aggr_cpu_id id = aggr_cpu_id__empty();1665 1666 id.node = perf_env__numa_node(data, cpu);1667 return id;1668}1669 1670static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,1671 void *data __maybe_unused)1672{1673 struct aggr_cpu_id id = aggr_cpu_id__empty();1674 1675 /* it always aggregates to the cpu 0 */1676 id.cpu = (struct perf_cpu){ .cpu = 0 };1677 return id;1678}1679 1680static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,1681 struct perf_cpu cpu)1682{1683 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);1684}1685static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,1686 struct perf_cpu cpu)1687{1688 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);1689}1690 1691static struct aggr_cpu_id perf_stat__get_cluster_file(struct perf_stat_config *config __maybe_unused,1692 struct perf_cpu cpu)1693{1694 return perf_env__get_cluster_aggr_by_cpu(cpu, &perf_stat.session->header.env);1695}1696 1697static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused,1698 struct perf_cpu cpu)1699{1700 return perf_env__get_cache_aggr_by_cpu(cpu, &perf_stat.session->header.env);1701}1702 1703static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,1704 struct perf_cpu cpu)1705{1706 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);1707}1708 1709static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,1710 struct perf_cpu cpu)1711{1712 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env);1713}1714 1715static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,1716 struct perf_cpu cpu)1717{1718 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);1719}1720 1721static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,1722 struct perf_cpu cpu)1723{1724 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);1725}1726 1727static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)1728{1729 switch (aggr_mode) {1730 case AGGR_SOCKET:1731 return perf_env__get_socket_aggr_by_cpu;1732 case AGGR_DIE:1733 return perf_env__get_die_aggr_by_cpu;1734 case AGGR_CLUSTER:1735 return perf_env__get_cluster_aggr_by_cpu;1736 case AGGR_CACHE:1737 return perf_env__get_cache_aggr_by_cpu;1738 case AGGR_CORE:1739 return perf_env__get_core_aggr_by_cpu;1740 case AGGR_NODE:1741 return perf_env__get_node_aggr_by_cpu;1742 case AGGR_GLOBAL:1743 return perf_env__get_global_aggr_by_cpu;1744 case AGGR_NONE:1745 return perf_env__get_cpu_aggr_by_cpu;1746 case AGGR_THREAD:1747 case AGGR_UNSET:1748 case AGGR_MAX:1749 default:1750 return NULL;1751 }1752}1753 1754static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)1755{1756 switch (aggr_mode) {1757 case AGGR_SOCKET:1758 return perf_stat__get_socket_file;1759 case AGGR_DIE:1760 return perf_stat__get_die_file;1761 case AGGR_CLUSTER:1762 return perf_stat__get_cluster_file;1763 case AGGR_CACHE:1764 return perf_stat__get_cache_file;1765 case AGGR_CORE:1766 return perf_stat__get_core_file;1767 case AGGR_NODE:1768 return perf_stat__get_node_file;1769 case AGGR_GLOBAL:1770 return perf_stat__get_global_file;1771 case AGGR_NONE:1772 return perf_stat__get_cpu_file;1773 case AGGR_THREAD:1774 case AGGR_UNSET:1775 case AGGR_MAX:1776 default:1777 return NULL;1778 }1779}1780 1781static int perf_stat_init_aggr_mode_file(struct perf_stat *st)1782{1783 struct perf_env *env = &st->session->header.env;1784 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);1785 bool needs_sort = stat_config.aggr_mode != AGGR_NONE;1786 1787 if (stat_config.aggr_mode == AGGR_THREAD) {1788 int nr = perf_thread_map__nr(evsel_list->core.threads);1789 1790 stat_config.aggr_map = cpu_aggr_map__empty_new(nr);1791 if (stat_config.aggr_map == NULL)1792 return -ENOMEM;1793 1794 for (int s = 0; s < nr; s++) {1795 struct aggr_cpu_id id = aggr_cpu_id__empty();1796 1797 id.thread_idx = s;1798 stat_config.aggr_map->map[s] = id;1799 }1800 return 0;1801 }1802 1803 if (!get_id)1804 return 0;1805 1806 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,1807 get_id, env, needs_sort);1808 if (!stat_config.aggr_map) {1809 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);1810 return -1;1811 }1812 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);1813 return 0;1814}1815 1816/*1817 * Add default attributes, if there were no attributes specified or1818 * if -d/--detailed, -d -d or -d -d -d is used:1819 */1820static int add_default_attributes(void)1821{1822 struct perf_event_attr default_attrs0[] = {1823 1824 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },1825 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },1826 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },1827 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },1828 1829 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },1830};1831 struct perf_event_attr frontend_attrs[] = {1832 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },1833};1834 struct perf_event_attr backend_attrs[] = {1835 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },1836};1837 struct perf_event_attr default_attrs1[] = {1838 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },1839 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },1840 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },1841 1842};1843 1844/*1845 * Detailed stats (-d), covering the L1 and last level data caches:1846 */1847 struct perf_event_attr detailed_attrs[] = {1848 1849 { .type = PERF_TYPE_HW_CACHE,1850 .config =1851 PERF_COUNT_HW_CACHE_L1D << 0 |1852 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1853 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },1854 1855 { .type = PERF_TYPE_HW_CACHE,1856 .config =1857 PERF_COUNT_HW_CACHE_L1D << 0 |1858 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1859 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },1860 1861 { .type = PERF_TYPE_HW_CACHE,1862 .config =1863 PERF_COUNT_HW_CACHE_LL << 0 |1864 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1865 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },1866 1867 { .type = PERF_TYPE_HW_CACHE,1868 .config =1869 PERF_COUNT_HW_CACHE_LL << 0 |1870 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1871 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },1872};1873 1874/*1875 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:1876 */1877 struct perf_event_attr very_detailed_attrs[] = {1878 1879 { .type = PERF_TYPE_HW_CACHE,1880 .config =1881 PERF_COUNT_HW_CACHE_L1I << 0 |1882 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1883 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },1884 1885 { .type = PERF_TYPE_HW_CACHE,1886 .config =1887 PERF_COUNT_HW_CACHE_L1I << 0 |1888 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1889 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },1890 1891 { .type = PERF_TYPE_HW_CACHE,1892 .config =1893 PERF_COUNT_HW_CACHE_DTLB << 0 |1894 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1895 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },1896 1897 { .type = PERF_TYPE_HW_CACHE,1898 .config =1899 PERF_COUNT_HW_CACHE_DTLB << 0 |1900 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1901 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },1902 1903 { .type = PERF_TYPE_HW_CACHE,1904 .config =1905 PERF_COUNT_HW_CACHE_ITLB << 0 |1906 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1907 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },1908 1909 { .type = PERF_TYPE_HW_CACHE,1910 .config =1911 PERF_COUNT_HW_CACHE_ITLB << 0 |1912 (PERF_COUNT_HW_CACHE_OP_READ << 8) |1913 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },1914 1915};1916 1917/*1918 * Very, very detailed stats (-d -d -d), adding prefetch events:1919 */1920 struct perf_event_attr very_very_detailed_attrs[] = {1921 1922 { .type = PERF_TYPE_HW_CACHE,1923 .config =1924 PERF_COUNT_HW_CACHE_L1D << 0 |1925 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |1926 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },1927 1928 { .type = PERF_TYPE_HW_CACHE,1929 .config =1930 PERF_COUNT_HW_CACHE_L1D << 0 |1931 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |1932 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },1933};1934 1935 struct perf_event_attr default_null_attrs[] = {};1936 const char *pmu = parse_events_option_args.pmu_filter ?: "all";1937 1938 /* Set attrs if no event is selected and !null_run: */1939 if (stat_config.null_run)1940 return 0;1941 1942 if (transaction_run) {1943 /* Handle -T as -M transaction. Once platform specific metrics1944 * support has been added to the json files, all architectures1945 * will use this approach. To determine transaction support1946 * on an architecture test for such a metric name.1947 */1948 if (!metricgroup__has_metric(pmu, "transaction")) {1949 pr_err("Missing transaction metrics\n");1950 return -1;1951 }1952 return metricgroup__parse_groups(evsel_list, pmu, "transaction",1953 stat_config.metric_no_group,1954 stat_config.metric_no_merge,1955 stat_config.metric_no_threshold,1956 stat_config.user_requested_cpu_list,1957 stat_config.system_wide,1958 stat_config.hardware_aware_grouping,1959 &stat_config.metric_events);1960 }1961 1962 if (smi_cost) {1963 int smi;1964 1965 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {1966 pr_err("freeze_on_smi is not supported.\n");1967 return -1;1968 }1969 1970 if (!smi) {1971 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {1972 fprintf(stderr, "Failed to set freeze_on_smi.\n");1973 return -1;1974 }1975 smi_reset = true;1976 }1977 1978 if (!metricgroup__has_metric(pmu, "smi")) {1979 pr_err("Missing smi metrics\n");1980 return -1;1981 }1982 1983 if (!force_metric_only)1984 stat_config.metric_only = true;1985 1986 return metricgroup__parse_groups(evsel_list, pmu, "smi",1987 stat_config.metric_no_group,1988 stat_config.metric_no_merge,1989 stat_config.metric_no_threshold,1990 stat_config.user_requested_cpu_list,1991 stat_config.system_wide,1992 stat_config.hardware_aware_grouping,1993 &stat_config.metric_events);1994 }1995 1996 if (topdown_run) {1997 unsigned int max_level = metricgroups__topdown_max_level();1998 char str[] = "TopdownL1";1999 2000 if (!force_metric_only)2001 stat_config.metric_only = true;2002 2003 if (!max_level) {2004 pr_err("Topdown requested but the topdown metric groups aren't present.\n"2005 "(See perf list the metric groups have names like TopdownL1)\n");2006 return -1;2007 }2008 if (stat_config.topdown_level > max_level) {2009 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);2010 return -1;2011 } else if (!stat_config.topdown_level)2012 stat_config.topdown_level = 1;2013 2014 if (!stat_config.interval && !stat_config.metric_only) {2015 fprintf(stat_config.output,2016 "Topdown accuracy may decrease when measuring long periods.\n"2017 "Please print the result regularly, e.g. -I1000\n");2018 }2019 str[8] = stat_config.topdown_level + '0';2020 if (metricgroup__parse_groups(evsel_list,2021 pmu, str,2022 /*metric_no_group=*/false,2023 /*metric_no_merge=*/false,2024 /*metric_no_threshold=*/true,2025 stat_config.user_requested_cpu_list,2026 stat_config.system_wide,2027 stat_config.hardware_aware_grouping,2028 &stat_config.metric_events) < 0)2029 return -1;2030 }2031 2032 if (!stat_config.topdown_level)2033 stat_config.topdown_level = 1;2034 2035 if (!evsel_list->core.nr_entries) {2036 /* No events so add defaults. */2037 if (target__has_cpu(&target))2038 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;2039 2040 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)2041 return -1;2042 if (perf_pmus__have_event("cpu", "stalled-cycles-frontend")) {2043 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)2044 return -1;2045 }2046 if (perf_pmus__have_event("cpu", "stalled-cycles-backend")) {2047 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)2048 return -1;2049 }2050 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)2051 return -1;2052 /*2053 * Add TopdownL1 metrics if they exist. To minimize2054 * multiplexing, don't request threshold computation.2055 */2056 if (metricgroup__has_metric(pmu, "Default")) {2057 struct evlist *metric_evlist = evlist__new();2058 struct evsel *metric_evsel;2059 2060 if (!metric_evlist)2061 return -1;2062 2063 if (metricgroup__parse_groups(metric_evlist, pmu, "Default",2064 /*metric_no_group=*/false,2065 /*metric_no_merge=*/false,2066 /*metric_no_threshold=*/true,2067 stat_config.user_requested_cpu_list,2068 stat_config.system_wide,2069 stat_config.hardware_aware_grouping,2070 &stat_config.metric_events) < 0)2071 return -1;2072 2073 evlist__for_each_entry(metric_evlist, metric_evsel) {2074 metric_evsel->skippable = true;2075 metric_evsel->default_metricgroup = true;2076 }2077 evlist__splice_list_tail(evsel_list, &metric_evlist->core.entries);2078 evlist__delete(metric_evlist);2079 }2080 2081 /* Platform specific attrs */2082 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0)2083 return -1;2084 }2085 2086 /* Detailed events get appended to the event list: */2087 2088 if (detailed_run < 1)2089 return 0;2090 2091 /* Append detailed run extra attributes: */2092 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)2093 return -1;2094 2095 if (detailed_run < 2)2096 return 0;2097 2098 /* Append very detailed run extra attributes: */2099 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)2100 return -1;2101 2102 if (detailed_run < 3)2103 return 0;2104 2105 /* Append very, very detailed run extra attributes: */2106 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);2107}2108 2109static const char * const stat_record_usage[] = {2110 "perf stat record [<options>]",2111 NULL,2112};2113 2114static void init_features(struct perf_session *session)2115{2116 int feat;2117 2118 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)2119 perf_header__set_feat(&session->header, feat);2120 2121 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);2122 perf_header__clear_feat(&session->header, HEADER_BUILD_ID);2123 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);2124 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);2125 perf_header__clear_feat(&session->header, HEADER_AUXTRACE);2126}2127 2128static int __cmd_record(const struct option stat_options[], struct opt_aggr_mode *opt_mode,2129 int argc, const char **argv)2130{2131 struct perf_session *session;2132 struct perf_data *data = &perf_stat.data;2133 2134 argc = parse_options(argc, argv, stat_options, stat_record_usage,2135 PARSE_OPT_STOP_AT_NON_OPTION);2136 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(opt_mode);2137 2138 if (output_name)2139 data->path = output_name;2140 2141 if (stat_config.run_count != 1 || forever) {2142 pr_err("Cannot use -r option with perf stat record.\n");2143 return -1;2144 }2145 2146 session = perf_session__new(data, NULL);2147 if (IS_ERR(session)) {2148 pr_err("Perf session creation failed\n");2149 return PTR_ERR(session);2150 }2151 2152 init_features(session);2153 2154 session->evlist = evsel_list;2155 perf_stat.session = session;2156 perf_stat.record = true;2157 return argc;2158}2159 2160static int process_stat_round_event(struct perf_session *session,2161 union perf_event *event)2162{2163 struct perf_record_stat_round *stat_round = &event->stat_round;2164 struct timespec tsh, *ts = NULL;2165 const char **argv = session->header.env.cmdline_argv;2166 int argc = session->header.env.nr_cmdline;2167 2168 process_counters();2169 2170 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)2171 update_stats(&walltime_nsecs_stats, stat_round->time);2172 2173 if (stat_config.interval && stat_round->time) {2174 tsh.tv_sec = stat_round->time / NSEC_PER_SEC;2175 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;2176 ts = &tsh;2177 }2178 2179 print_counters(ts, argc, argv);2180 return 0;2181}2182 2183static2184int process_stat_config_event(struct perf_session *session,2185 union perf_event *event)2186{2187 const struct perf_tool *tool = session->tool;2188 struct perf_stat *st = container_of(tool, struct perf_stat, tool);2189 2190 perf_event__read_stat_config(&stat_config, &event->stat_config);2191 2192 if (perf_cpu_map__is_empty(st->cpus)) {2193 if (st->aggr_mode != AGGR_UNSET)2194 pr_warning("warning: processing task data, aggregation mode not set\n");2195 } else if (st->aggr_mode != AGGR_UNSET) {2196 stat_config.aggr_mode = st->aggr_mode;2197 }2198 2199 if (perf_stat.data.is_pipe)2200 perf_stat_init_aggr_mode();2201 else2202 perf_stat_init_aggr_mode_file(st);2203 2204 if (stat_config.aggr_map) {2205 int nr_aggr = stat_config.aggr_map->nr;2206 2207 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {2208 pr_err("cannot allocate aggr counts\n");2209 return -1;2210 }2211 }2212 return 0;2213}2214 2215static int set_maps(struct perf_stat *st)2216{2217 if (!st->cpus || !st->threads)2218 return 0;2219 2220 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))2221 return -EINVAL;2222 2223 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);2224 2225 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true))2226 return -ENOMEM;2227 2228 st->maps_allocated = true;2229 return 0;2230}2231 2232static2233int process_thread_map_event(struct perf_session *session,2234 union perf_event *event)2235{2236 const struct perf_tool *tool = session->tool;2237 struct perf_stat *st = container_of(tool, struct perf_stat, tool);2238 2239 if (st->threads) {2240 pr_warning("Extra thread map event, ignoring.\n");2241 return 0;2242 }2243 2244 st->threads = thread_map__new_event(&event->thread_map);2245 if (!st->threads)2246 return -ENOMEM;2247 2248 return set_maps(st);2249}2250 2251static2252int process_cpu_map_event(struct perf_session *session,2253 union perf_event *event)2254{2255 const struct perf_tool *tool = session->tool;2256 struct perf_stat *st = container_of(tool, struct perf_stat, tool);2257 struct perf_cpu_map *cpus;2258 2259 if (st->cpus) {2260 pr_warning("Extra cpu map event, ignoring.\n");2261 return 0;2262 }2263 2264 cpus = cpu_map__new_data(&event->cpu_map.data);2265 if (!cpus)2266 return -ENOMEM;2267 2268 st->cpus = cpus;2269 return set_maps(st);2270}2271 2272static const char * const stat_report_usage[] = {2273 "perf stat report [<options>]",2274 NULL,2275};2276 2277static struct perf_stat perf_stat = {2278 .aggr_mode = AGGR_UNSET,2279 .aggr_level = 0,2280};2281 2282static int __cmd_report(int argc, const char **argv)2283{2284 struct perf_session *session;2285 const struct option options[] = {2286 OPT_STRING('i', "input", &input_name, "file", "input file name"),2287 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,2288 "aggregate counts per processor socket", AGGR_SOCKET),2289 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,2290 "aggregate counts per processor die", AGGR_DIE),2291 OPT_SET_UINT(0, "per-cluster", &perf_stat.aggr_mode,2292 "aggregate counts perf processor cluster", AGGR_CLUSTER),2293 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level,2294 "cache level",2295 "aggregate count at this cache level (Default: LLC)",2296 parse_cache_level),2297 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,2298 "aggregate counts per physical processor core", AGGR_CORE),2299 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,2300 "aggregate counts per numa node", AGGR_NODE),2301 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,2302 "disable CPU count aggregation", AGGR_NONE),2303 OPT_END()2304 };2305 struct stat st;2306 int ret;2307 2308 argc = parse_options(argc, argv, options, stat_report_usage, 0);2309 2310 if (!input_name || !strlen(input_name)) {2311 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))2312 input_name = "-";2313 else2314 input_name = "perf.data";2315 }2316 2317 perf_stat.data.path = input_name;2318 perf_stat.data.mode = PERF_DATA_MODE_READ;2319 2320 perf_tool__init(&perf_stat.tool, /*ordered_events=*/false);2321 perf_stat.tool.attr = perf_event__process_attr;2322 perf_stat.tool.event_update = perf_event__process_event_update;2323 perf_stat.tool.thread_map = process_thread_map_event;2324 perf_stat.tool.cpu_map = process_cpu_map_event;2325 perf_stat.tool.stat_config = process_stat_config_event;2326 perf_stat.tool.stat = perf_event__process_stat_event;2327 perf_stat.tool.stat_round = process_stat_round_event;2328 2329 session = perf_session__new(&perf_stat.data, &perf_stat.tool);2330 if (IS_ERR(session))2331 return PTR_ERR(session);2332 2333 perf_stat.session = session;2334 stat_config.output = stderr;2335 evlist__delete(evsel_list);2336 evsel_list = session->evlist;2337 2338 ret = perf_session__process_events(session);2339 if (ret)2340 return ret;2341 2342 perf_session__delete(session);2343 return 0;2344}2345 2346static void setup_system_wide(int forks)2347{2348 /*2349 * Make system wide (-a) the default target if2350 * no target was specified and one of following2351 * conditions is met:2352 *2353 * - there's no workload specified2354 * - there is workload specified but all requested2355 * events are system wide events2356 */2357 if (!target__none(&target))2358 return;2359 2360 if (!forks)2361 target.system_wide = true;2362 else {2363 struct evsel *counter;2364 2365 evlist__for_each_entry(evsel_list, counter) {2366 if (!counter->core.requires_cpu &&2367 !evsel__name_is(counter, "duration_time")) {2368 return;2369 }2370 }2371 2372 if (evsel_list->core.nr_entries)2373 target.system_wide = true;2374 }2375}2376 2377int cmd_stat(int argc, const char **argv)2378{2379 struct opt_aggr_mode opt_mode = {};2380 struct option stat_options[] = {2381 OPT_BOOLEAN('T', "transaction", &transaction_run,2382 "hardware transaction statistics"),2383 OPT_CALLBACK('e', "event", &parse_events_option_args, "event",2384 "event selector. use 'perf list' to list available events",2385 parse_events_option),2386 OPT_CALLBACK(0, "filter", &evsel_list, "filter",2387 "event filter", parse_filter),2388 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,2389 "child tasks do not inherit counters"),2390 OPT_STRING('p', "pid", &target.pid, "pid",2391 "stat events on existing process id"),2392 OPT_STRING('t', "tid", &target.tid, "tid",2393 "stat events on existing thread id"),2394#ifdef HAVE_BPF_SKEL2395 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",2396 "stat events on existing bpf program id"),2397 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,2398 "use bpf program to count events"),2399 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",2400 "path to perf_event_attr map"),2401#endif2402 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,2403 "system-wide collection from all CPUs"),2404 OPT_BOOLEAN(0, "scale", &stat_config.scale,2405 "Use --no-scale to disable counter scaling for multiplexing"),2406 OPT_INCR('v', "verbose", &verbose,2407 "be more verbose (show counter open errors, etc)"),2408 OPT_INTEGER('r', "repeat", &stat_config.run_count,2409 "repeat command and print average + stddev (max: 100, forever: 0)"),2410 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,2411 "display details about each run (only with -r option)"),2412 OPT_BOOLEAN('n', "null", &stat_config.null_run,2413 "null run - dont start any counters"),2414 OPT_INCR('d', "detailed", &detailed_run,2415 "detailed run - start a lot of events"),2416 OPT_BOOLEAN('S', "sync", &sync_run,2417 "call sync() before starting a run"),2418 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,2419 "print large numbers with thousands\' separators",2420 stat__set_big_num),2421 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",2422 "list of cpus to monitor in system-wide"),2423 OPT_BOOLEAN('A', "no-aggr", &opt_mode.no_aggr,2424 "disable aggregation across CPUs or PMUs"),2425 OPT_BOOLEAN(0, "no-merge", &opt_mode.no_aggr,2426 "disable aggregation the same as -A or -no-aggr"),2427 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,2428 "Merge identical named hybrid events"),2429 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",2430 "print counts with custom separator"),2431 OPT_BOOLEAN('j', "json-output", &stat_config.json_output,2432 "print counts in JSON format"),2433 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",2434 "monitor event in cgroup name only", parse_stat_cgroups),2435 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",2436 "expand events for each cgroup"),2437 OPT_STRING('o', "output", &output_name, "file", "output file name"),2438 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),2439 OPT_INTEGER(0, "log-fd", &output_fd,2440 "log output to fd, instead of stderr"),2441 OPT_STRING(0, "pre", &pre_cmd, "command",2442 "command to run prior to the measured command"),2443 OPT_STRING(0, "post", &post_cmd, "command",2444 "command to run after to the measured command"),2445 OPT_UINTEGER('I', "interval-print", &stat_config.interval,2446 "print counts at regular interval in ms "2447 "(overhead is possible for values <= 100ms)"),2448 OPT_INTEGER(0, "interval-count", &stat_config.times,2449 "print counts for fixed number of times"),2450 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,2451 "clear screen in between new interval"),2452 OPT_UINTEGER(0, "timeout", &stat_config.timeout,2453 "stop workload and print counts after a timeout period in ms (>= 10ms)"),2454 OPT_BOOLEAN(0, "per-socket", &opt_mode.socket,2455 "aggregate counts per processor socket"),2456 OPT_BOOLEAN(0, "per-die", &opt_mode.die, "aggregate counts per processor die"),2457 OPT_BOOLEAN(0, "per-cluster", &opt_mode.cluster,2458 "aggregate counts per processor cluster"),2459 OPT_CALLBACK_OPTARG(0, "per-cache", &opt_mode, &stat_config.aggr_level,2460 "cache level", "aggregate count at this cache level (Default: LLC)",2461 parse_cache_level),2462 OPT_BOOLEAN(0, "per-core", &opt_mode.core,2463 "aggregate counts per physical processor core"),2464 OPT_BOOLEAN(0, "per-thread", &opt_mode.thread, "aggregate counts per thread"),2465 OPT_BOOLEAN(0, "per-node", &opt_mode.node, "aggregate counts per numa node"),2466 OPT_INTEGER('D', "delay", &target.initial_delay,2467 "ms to wait before starting measurement after program start (-1: start with events disabled)"),2468 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,2469 "Only print computed metrics. No raw values", enable_metric_only),2470 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,2471 "don't group metric events, impacts multiplexing"),2472 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,2473 "don't try to share events between metrics in a group"),2474 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,2475 "disable adding events for the metric threshold calculation"),2476 OPT_BOOLEAN(0, "topdown", &topdown_run,2477 "measure top-down statistics"),2478#ifdef HAVE_ARCH_X86_64_SUPPORT2479 OPT_BOOLEAN(0, "record-tpebs", &tpebs_recording,2480 "enable recording for tpebs when retire_latency required"),2481#endif2482 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,2483 "Set the metrics level for the top-down statistics (0: max level)"),2484 OPT_BOOLEAN(0, "smi-cost", &smi_cost,2485 "measure SMI cost"),2486 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",2487 "monitor specified metrics or metric groups (separated by ,)",2488 append_metric_groups),2489 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,2490 "Configure all used events to run in kernel space.",2491 PARSE_OPT_EXCLUSIVE),2492 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,2493 "Configure all used events to run in user space.",2494 PARSE_OPT_EXCLUSIVE),2495 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,2496 "Use with 'percore' event qualifier to show the event "2497 "counts of one hardware thread by sum up total hardware "2498 "threads of same physical core"),2499 OPT_BOOLEAN(0, "summary", &stat_config.summary,2500 "print summary for interval mode"),2501 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,2502 "don't print 'summary' for CSV summary output"),2503 OPT_BOOLEAN(0, "quiet", &quiet,2504 "don't print any output, messages or warnings (useful with record)"),2505 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",2506 "Only enable events on applying cpu with this type "2507 "for hybrid platform (e.g. core or atom)",2508 parse_cputype),2509#ifdef HAVE_LIBPFM2510 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",2511 "libpfm4 event selector. use 'perf list' to list available events",2512 parse_libpfm_events_option),2513#endif2514 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",2515 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"2516 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"2517 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",2518 parse_control_option),2519 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",2520 "measure I/O performance metrics provided by arch/platform",2521 iostat_parse),2522 OPT_END()2523 };2524 const char * const stat_usage[] = {2525 "perf stat [<options>] [<command>]",2526 NULL2527 };2528 int status = -EINVAL, run_idx, err;2529 const char *mode;2530 FILE *output = stderr;2531 unsigned int interval, timeout;2532 const char * const stat_subcommands[] = { "record", "report" };2533 char errbuf[BUFSIZ];2534 2535 setlocale(LC_ALL, "");2536 2537 evsel_list = evlist__new();2538 if (evsel_list == NULL)2539 return -ENOMEM;2540 2541 parse_events__shrink_config_terms();2542 2543 /* String-parsing callback-based options would segfault when negated */2544 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);2545 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);2546 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);2547 2548 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,2549 (const char **) stat_usage,2550 PARSE_OPT_STOP_AT_NON_OPTION);2551 2552 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(&opt_mode);2553 2554 if (stat_config.csv_sep) {2555 stat_config.csv_output = true;2556 if (!strcmp(stat_config.csv_sep, "\\t"))2557 stat_config.csv_sep = "\t";2558 } else2559 stat_config.csv_sep = DEFAULT_SEPARATOR;2560 2561 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {2562 argc = __cmd_record(stat_options, &opt_mode, argc, argv);2563 if (argc < 0)2564 return -1;2565 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))2566 return __cmd_report(argc, argv);2567 2568 interval = stat_config.interval;2569 timeout = stat_config.timeout;2570 2571 /*2572 * For record command the -o is already taken care of.2573 */2574 if (!STAT_RECORD && output_name && strcmp(output_name, "-"))2575 output = NULL;2576 2577 if (output_name && output_fd) {2578 fprintf(stderr, "cannot use both --output and --log-fd\n");2579 parse_options_usage(stat_usage, stat_options, "o", 1);2580 parse_options_usage(NULL, stat_options, "log-fd", 0);2581 goto out;2582 }2583 2584 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {2585 fprintf(stderr, "--metric-only is not supported with --per-thread\n");2586 goto out;2587 }2588 2589 if (stat_config.metric_only && stat_config.run_count > 1) {2590 fprintf(stderr, "--metric-only is not supported with -r\n");2591 goto out;2592 }2593 2594 if (stat_config.walltime_run_table && stat_config.run_count <= 1) {2595 fprintf(stderr, "--table is only supported with -r\n");2596 parse_options_usage(stat_usage, stat_options, "r", 1);2597 parse_options_usage(NULL, stat_options, "table", 0);2598 goto out;2599 }2600 2601 if (output_fd < 0) {2602 fprintf(stderr, "argument to --log-fd must be a > 0\n");2603 parse_options_usage(stat_usage, stat_options, "log-fd", 0);2604 goto out;2605 }2606 2607 if (!output && !quiet) {2608 struct timespec tm;2609 mode = append_file ? "a" : "w";2610 2611 output = fopen(output_name, mode);2612 if (!output) {2613 perror("failed to create output file");2614 return -1;2615 }2616 if (!stat_config.json_output) {2617 clock_gettime(CLOCK_REALTIME, &tm);2618 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));2619 }2620 } else if (output_fd > 0) {2621 mode = append_file ? "a" : "w";2622 output = fdopen(output_fd, mode);2623 if (!output) {2624 perror("Failed opening logfd");2625 return -errno;2626 }2627 }2628 2629 if (stat_config.interval_clear && !isatty(fileno(output))) {2630 fprintf(stderr, "--interval-clear does not work with output\n");2631 parse_options_usage(stat_usage, stat_options, "o", 1);2632 parse_options_usage(NULL, stat_options, "log-fd", 0);2633 parse_options_usage(NULL, stat_options, "interval-clear", 0);2634 return -1;2635 }2636 2637 stat_config.output = output;2638 2639 /*2640 * let the spreadsheet do the pretty-printing2641 */2642 if (stat_config.csv_output) {2643 /* User explicitly passed -B? */2644 if (big_num_opt == 1) {2645 fprintf(stderr, "-B option not supported with -x\n");2646 parse_options_usage(stat_usage, stat_options, "B", 1);2647 parse_options_usage(NULL, stat_options, "x", 1);2648 goto out;2649 } else /* Nope, so disable big number formatting */2650 stat_config.big_num = false;2651 } else if (big_num_opt == 0) /* User passed --no-big-num */2652 stat_config.big_num = false;2653 2654 err = target__validate(&target);2655 if (err) {2656 target__strerror(&target, err, errbuf, BUFSIZ);2657 pr_warning("%s\n", errbuf);2658 }2659 2660 setup_system_wide(argc);2661 2662 /*2663 * Display user/system times only for single2664 * run and when there's specified tracee.2665 */2666 if ((stat_config.run_count == 1) && target__none(&target))2667 stat_config.ru_display = true;2668 2669 if (stat_config.run_count < 0) {2670 pr_err("Run count must be a positive number\n");2671 parse_options_usage(stat_usage, stat_options, "r", 1);2672 goto out;2673 } else if (stat_config.run_count == 0) {2674 forever = true;2675 stat_config.run_count = 1;2676 }2677 2678 if (stat_config.walltime_run_table) {2679 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));2680 if (!stat_config.walltime_run) {2681 pr_err("failed to setup -r option");2682 goto out;2683 }2684 }2685 2686 if ((stat_config.aggr_mode == AGGR_THREAD) &&2687 !target__has_task(&target)) {2688 if (!target.system_wide || target.cpu_list) {2689 fprintf(stderr, "The --per-thread option is only "2690 "available when monitoring via -p -t -a "2691 "options or only --per-thread.\n");2692 parse_options_usage(NULL, stat_options, "p", 1);2693 parse_options_usage(NULL, stat_options, "t", 1);2694 goto out;2695 }2696 }2697 2698 /*2699 * no_aggr, cgroup are for system-wide only2700 * --per-thread is aggregated per thread, we dont mix it with cpu mode2701 */2702 if (((stat_config.aggr_mode != AGGR_GLOBAL &&2703 stat_config.aggr_mode != AGGR_THREAD) ||2704 (nr_cgroups || stat_config.cgroup_list)) &&2705 !target__has_cpu(&target)) {2706 fprintf(stderr, "both cgroup and no-aggregation "2707 "modes only available in system-wide mode\n");2708 2709 parse_options_usage(stat_usage, stat_options, "G", 1);2710 parse_options_usage(NULL, stat_options, "A", 1);2711 parse_options_usage(NULL, stat_options, "a", 1);2712 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);2713 goto out;2714 }2715 2716 if (stat_config.iostat_run) {2717 status = iostat_prepare(evsel_list, &stat_config);2718 if (status)2719 goto out;2720 if (iostat_mode == IOSTAT_LIST) {2721 iostat_list(evsel_list, &stat_config);2722 goto out;2723 } else if (verbose > 0)2724 iostat_list(evsel_list, &stat_config);2725 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))2726 target.system_wide = true;2727 }2728 2729 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))2730 target.per_thread = true;2731 2732 stat_config.system_wide = target.system_wide;2733 if (target.cpu_list) {2734 stat_config.user_requested_cpu_list = strdup(target.cpu_list);2735 if (!stat_config.user_requested_cpu_list) {2736 status = -ENOMEM;2737 goto out;2738 }2739 }2740 2741 /*2742 * Metric parsing needs to be delayed as metrics may optimize events2743 * knowing the target is system-wide.2744 */2745 if (metrics) {2746 const char *pmu = parse_events_option_args.pmu_filter ?: "all";2747 int ret = metricgroup__parse_groups(evsel_list, pmu, metrics,2748 stat_config.metric_no_group,2749 stat_config.metric_no_merge,2750 stat_config.metric_no_threshold,2751 stat_config.user_requested_cpu_list,2752 stat_config.system_wide,2753 stat_config.hardware_aware_grouping,2754 &stat_config.metric_events);2755 2756 zfree(&metrics);2757 if (ret) {2758 status = ret;2759 goto out;2760 }2761 }2762 2763 if (add_default_attributes())2764 goto out;2765 2766 if (stat_config.cgroup_list) {2767 if (nr_cgroups > 0) {2768 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");2769 parse_options_usage(stat_usage, stat_options, "G", 1);2770 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);2771 goto out;2772 }2773 2774 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,2775 &stat_config.metric_events, true) < 0) {2776 parse_options_usage(stat_usage, stat_options,2777 "for-each-cgroup", 0);2778 goto out;2779 }2780 }2781 2782 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list);2783 2784 if (evlist__create_maps(evsel_list, &target) < 0) {2785 if (target__has_task(&target)) {2786 pr_err("Problems finding threads of monitor\n");2787 parse_options_usage(stat_usage, stat_options, "p", 1);2788 parse_options_usage(NULL, stat_options, "t", 1);2789 } else if (target__has_cpu(&target)) {2790 perror("failed to parse CPUs map");2791 parse_options_usage(stat_usage, stat_options, "C", 1);2792 parse_options_usage(NULL, stat_options, "a", 1);2793 }2794 goto out;2795 }2796 2797 evlist__check_cpu_maps(evsel_list);2798 2799 /*2800 * Initialize thread_map with comm names,2801 * so we could print it out on output.2802 */2803 if (stat_config.aggr_mode == AGGR_THREAD) {2804 thread_map__read_comms(evsel_list->core.threads);2805 }2806 2807 if (stat_config.aggr_mode == AGGR_NODE)2808 cpu__setup_cpunode_map();2809 2810 if (stat_config.times && interval)2811 interval_count = true;2812 else if (stat_config.times && !interval) {2813 pr_err("interval-count option should be used together with "2814 "interval-print.\n");2815 parse_options_usage(stat_usage, stat_options, "interval-count", 0);2816 parse_options_usage(stat_usage, stat_options, "I", 1);2817 goto out;2818 }2819 2820 if (timeout && timeout < 100) {2821 if (timeout < 10) {2822 pr_err("timeout must be >= 10ms.\n");2823 parse_options_usage(stat_usage, stat_options, "timeout", 0);2824 goto out;2825 } else2826 pr_warning("timeout < 100ms. "2827 "The overhead percentage could be high in some cases. "2828 "Please proceed with caution.\n");2829 }2830 if (timeout && interval) {2831 pr_err("timeout option is not supported with interval-print.\n");2832 parse_options_usage(stat_usage, stat_options, "timeout", 0);2833 parse_options_usage(stat_usage, stat_options, "I", 1);2834 goto out;2835 }2836 2837 if (perf_stat_init_aggr_mode())2838 goto out;2839 2840 if (evlist__alloc_stats(&stat_config, evsel_list, interval))2841 goto out;2842 2843 /*2844 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless2845 * while avoiding that older tools show confusing messages.2846 *2847 * However for pipe sessions we need to keep it zero,2848 * because script's perf_evsel__check_attr is triggered2849 * by attr->sample_type != 0, and we can't run it on2850 * stat sessions.2851 */2852 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);2853 2854 /*2855 * We dont want to block the signals - that would cause2856 * child tasks to inherit that and Ctrl-C would not work.2857 * What we want is for Ctrl-C to work in the exec()-ed2858 * task, but being ignored by perf stat itself:2859 */2860 atexit(sig_atexit);2861 if (!forever)2862 signal(SIGINT, skip_signal);2863 signal(SIGCHLD, skip_signal);2864 signal(SIGALRM, skip_signal);2865 signal(SIGABRT, skip_signal);2866 2867 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))2868 goto out;2869 2870 /* Enable ignoring missing threads when -p option is defined. */2871 evlist__first(evsel_list)->ignore_missing_thread = target.pid;2872 status = 0;2873 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {2874 if (stat_config.run_count != 1 && verbose > 0)2875 fprintf(output, "[ perf stat: executing run #%d ... ]\n",2876 run_idx + 1);2877 2878 if (run_idx != 0)2879 evlist__reset_prev_raw_counts(evsel_list);2880 2881 status = run_perf_stat(argc, argv, run_idx);2882 if (forever && status != -1 && !interval) {2883 print_counters(NULL, argc, argv);2884 perf_stat__reset_stats();2885 }2886 }2887 2888 if (!forever && status != -1 && (!interval || stat_config.summary)) {2889 if (stat_config.run_count > 1)2890 evlist__copy_res_stats(&stat_config, evsel_list);2891 print_counters(NULL, argc, argv);2892 }2893 2894 evlist__finalize_ctlfd(evsel_list);2895 2896 if (STAT_RECORD) {2897 /*2898 * We synthesize the kernel mmap record just so that older tools2899 * don't emit warnings about not being able to resolve symbols2900 * due to /proc/sys/kernel/kptr_restrict settings and instead provide2901 * a saner message about no samples being in the perf.data file.2902 *2903 * This also serves to suppress a warning about f_header.data.size == 02904 * in header.c at the moment 'perf stat record' gets introduced, which2905 * is not really needed once we start adding the stat specific PERF_RECORD_2906 * records, but the need to suppress the kptr_restrict messages in older2907 * tools remain -acme2908 */2909 int fd = perf_data__fd(&perf_stat.data);2910 2911 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,2912 process_synthesized_event,2913 &perf_stat.session->machines.host);2914 if (err) {2915 pr_warning("Couldn't synthesize the kernel mmap record, harmless, "2916 "older tools may produce warnings about this file\n.");2917 }2918 2919 if (!interval) {2920 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))2921 pr_err("failed to write stat round event\n");2922 }2923 2924 if (!perf_stat.data.is_pipe) {2925 perf_stat.session->header.data_size += perf_stat.bytes_written;2926 perf_session__write_header(perf_stat.session, evsel_list, fd, true);2927 }2928 2929 evlist__close(evsel_list);2930 perf_session__delete(perf_stat.session);2931 }2932 2933 perf_stat__exit_aggr_mode();2934 evlist__free_stats(evsel_list);2935out:2936 if (stat_config.iostat_run)2937 iostat_release(evsel_list);2938 2939 zfree(&stat_config.walltime_run);2940 zfree(&stat_config.user_requested_cpu_list);2941 2942 if (smi_cost && smi_reset)2943 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);2944 2945 evlist__delete(evsel_list);2946 2947 metricgroup__rblist_exit(&stat_config.metric_events);2948 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);2949 2950 return status;2951}2952