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builtin-stat.c
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linux-6.19.14/tools/perf/builtin-stat.c
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * builtin-stat.c 4 * 5 * Builtin stat command: Give a precise performance counters summary 6 * overview about any workload, CPU or specific PID. 7 * 8 * Sample output: 9 10 $ perf stat ./hackbench 10 11 12 Time: 0.118 13 14 Performance counter stats for './hackbench 10': 15 16 1708.761321 task-clock # 11.037 CPUs utilized 17 41,190 context-switches # 0.024 M/sec 18 6,735 CPU-migrations # 0.004 M/sec 19 17,318 page-faults # 0.010 M/sec 20 5,205,202,243 cycles # 3.046 GHz 21 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle 22 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle 23 2,603,501,247 instructions # 0.50 insns per cycle 24 # 1.48 stalled cycles per insn 25 484,357,498 branches # 283.455 M/sec 26 6,388,934 branch-misses # 1.32% of all branches 27 28 0.154822978 seconds time elapsed 29 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/tool_pmu.h" 50#include "util/event.h" 51#include "util/evlist.h" 52#include "util/evsel.h" 53#include "util/debug.h" 54#include "util/color.h" 55#include "util/stat.h" 56#include "util/header.h" 57#include "util/cpumap.h" 58#include "util/thread_map.h" 59#include "util/counts.h" 60#include "util/topdown.h" 61#include "util/session.h" 62#include "util/tool.h" 63#include "util/string2.h" 64#include "util/metricgroup.h" 65#include "util/synthetic-events.h" 66#include "util/target.h" 67#include "util/time-utils.h" 68#include "util/top.h" 69#include "util/affinity.h" 70#include "util/pfm.h" 71#include "util/bpf_counter.h" 72#include "util/iostat.h" 73#include "util/util.h" 74#include "util/intel-tpebs.h" 75#include "asm/bug.h" 76 77#include <linux/list_sort.h> 78#include <linux/time64.h> 79#include <linux/zalloc.h> 80#include <api/fs/fs.h> 81#include <errno.h> 82#include <signal.h> 83#include <stdlib.h> 84#include <sys/prctl.h> 85#include <inttypes.h> 86#include <locale.h> 87#include <math.h> 88#include <sys/types.h> 89#include <sys/stat.h> 90#include <sys/wait.h> 91#include <unistd.h> 92#include <sys/time.h> 93#include <sys/resource.h> 94#include <linux/err.h> 95 96#include <linux/ctype.h> 97#include <perf/evlist.h> 98#include <internal/threadmap.h> 99 100#ifdef HAVE_BPF_SKEL 101#include "util/bpf_skel/bperf_cgroup.h" 102#endif 103 104#define DEFAULT_SEPARATOR " " 105#define FREEZE_ON_SMI_PATH "bus/event_source/devices/cpu/freeze_on_smi" 106 107struct rusage_stats { 108 struct stats ru_utime_usec_stat; 109 struct stats ru_stime_usec_stat; 110}; 111 112static void print_counters(struct timespec *ts, int argc, const char **argv); 113 114static struct evlist *evsel_list; 115static struct parse_events_option_args parse_events_option_args = { 116 .evlistp = &evsel_list, 117}; 118 119static bool all_counters_use_bpf = true; 120 121static struct target target; 122 123static volatile sig_atomic_t child_pid = -1; 124static int detailed_run = 0; 125static bool transaction_run; 126static bool topdown_run = false; 127static bool smi_cost = false; 128static bool smi_reset = false; 129static int big_num_opt = -1; 130static const char *pre_cmd = NULL; 131static const char *post_cmd = NULL; 132static bool sync_run = false; 133static bool forever = false; 134static bool force_metric_only = false; 135static struct timespec ref_time; 136static bool append_file; 137static bool interval_count; 138static const char *output_name; 139static int output_fd; 140static char *metrics; 141static struct rusage_stats ru_stats; 142 143struct perf_stat { 144 bool record; 145 struct perf_data data; 146 struct perf_session *session; 147 u64 bytes_written; 148 struct perf_tool tool; 149 bool maps_allocated; 150 struct perf_cpu_map *cpus; 151 struct perf_thread_map *threads; 152 enum aggr_mode aggr_mode; 153 u32 aggr_level; 154}; 155 156static struct perf_stat perf_stat; 157#define STAT_RECORD perf_stat.record 158 159static volatile sig_atomic_t done = 0; 160 161/* Options set from the command line. */ 162struct opt_aggr_mode { 163 bool node, socket, die, cluster, cache, core, thread, no_aggr; 164}; 165 166/* Turn command line option into most generic aggregation mode setting. */ 167static enum aggr_mode opt_aggr_mode_to_aggr_mode(struct opt_aggr_mode *opt_mode) 168{ 169 enum aggr_mode mode = AGGR_GLOBAL; 170 171 if (opt_mode->node) 172 mode = AGGR_NODE; 173 if (opt_mode->socket) 174 mode = AGGR_SOCKET; 175 if (opt_mode->die) 176 mode = AGGR_DIE; 177 if (opt_mode->cluster) 178 mode = AGGR_CLUSTER; 179 if (opt_mode->cache) 180 mode = AGGR_CACHE; 181 if (opt_mode->core) 182 mode = AGGR_CORE; 183 if (opt_mode->thread) 184 mode = AGGR_THREAD; 185 if (opt_mode->no_aggr) 186 mode = AGGR_NONE; 187 return mode; 188} 189 190static void evlist__check_cpu_maps(struct evlist *evlist) 191{ 192 struct evsel *evsel, *warned_leader = NULL; 193 194 evlist__for_each_entry(evlist, evsel) { 195 struct evsel *leader = evsel__leader(evsel); 196 197 /* Check that leader matches cpus with each member. */ 198 if (leader == evsel) 199 continue; 200 if (perf_cpu_map__equal(leader->core.cpus, evsel->core.cpus)) 201 continue; 202 203 /* If there's mismatch disable the group and warn user. */ 204 if (warned_leader != leader) { 205 char buf[200]; 206 207 pr_warning("WARNING: grouped events cpus do not match.\n" 208 "Events with CPUs not matching the leader will " 209 "be removed from the group.\n"); 210 evsel__group_desc(leader, buf, sizeof(buf)); 211 pr_warning(" %s\n", buf); 212 warned_leader = leader; 213 } 214 if (verbose > 0) { 215 char buf[200]; 216 217 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf)); 218 pr_warning(" %s: %s\n", leader->name, buf); 219 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf)); 220 pr_warning(" %s: %s\n", evsel->name, buf); 221 } 222 223 evsel__remove_from_group(evsel, leader); 224 } 225} 226 227static inline void diff_timespec(struct timespec *r, struct timespec *a, 228 struct timespec *b) 229{ 230 r->tv_sec = a->tv_sec - b->tv_sec; 231 if (a->tv_nsec < b->tv_nsec) { 232 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; 233 r->tv_sec--; 234 } else { 235 r->tv_nsec = a->tv_nsec - b->tv_nsec ; 236 } 237} 238 239static void perf_stat__reset_stats(void) 240{ 241 evlist__reset_stats(evsel_list); 242 memset(stat_config.walltime_nsecs_stats, 0, sizeof(*stat_config.walltime_nsecs_stats)); 243} 244 245static int process_synthesized_event(const struct perf_tool *tool __maybe_unused, 246 union perf_event *event, 247 struct perf_sample *sample __maybe_unused, 248 struct machine *machine __maybe_unused) 249{ 250 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { 251 pr_err("failed to write perf data, error: %m\n"); 252 return -1; 253 } 254 255 perf_stat.bytes_written += event->header.size; 256 return 0; 257} 258 259static int write_stat_round_event(u64 tm, u64 type) 260{ 261 return perf_event__synthesize_stat_round(NULL, tm, type, 262 process_synthesized_event, 263 NULL); 264} 265 266#define WRITE_STAT_ROUND_EVENT(time, interval) \ 267 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) 268 269#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) 270 271static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread, 272 struct perf_counts_values *count) 273{ 274 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread); 275 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx); 276 277 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, 278 process_synthesized_event, NULL); 279} 280 281static int read_single_counter(struct evsel *counter, int cpu_map_idx, int thread) 282{ 283 int err = evsel__read_counter(counter, cpu_map_idx, thread); 284 285 /* 286 * Reading user and system time will fail when the process 287 * terminates. Use the wait4 values in that case. 288 */ 289 if (err && cpu_map_idx == 0 && 290 (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME || 291 evsel__tool_event(counter) == TOOL_PMU__EVENT_SYSTEM_TIME)) { 292 struct perf_counts_values *count = 293 perf_counts(counter->counts, cpu_map_idx, thread); 294 struct perf_counts_values *old_count = NULL; 295 u64 val; 296 297 if (counter->prev_raw_counts) 298 old_count = perf_counts(counter->prev_raw_counts, cpu_map_idx, thread); 299 300 if (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME) 301 val = ru_stats.ru_utime_usec_stat.mean; 302 else 303 val = ru_stats.ru_stime_usec_stat.mean; 304 305 count->val = val; 306 if (old_count) { 307 count->run = old_count->run + 1; 308 count->ena = old_count->ena + 1; 309 } else { 310 count->run++; 311 count->ena++; 312 } 313 return 0; 314 } 315 return err; 316} 317 318/* 319 * Read out the results of a single counter: 320 * do not aggregate counts across CPUs in system-wide mode 321 */ 322static int read_counter_cpu(struct evsel *counter, int cpu_map_idx) 323{ 324 int nthreads = perf_thread_map__nr(evsel_list->core.threads); 325 int thread; 326 327 if (!counter->supported) 328 return -ENOENT; 329 330 for (thread = 0; thread < nthreads; thread++) { 331 struct perf_counts_values *count; 332 333 count = perf_counts(counter->counts, cpu_map_idx, thread); 334 335 /* 336 * The leader's group read loads data into its group members 337 * (via evsel__read_counter()) and sets their count->loaded. 338 */ 339 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) && 340 read_single_counter(counter, cpu_map_idx, thread)) { 341 counter->counts->scaled = -1; 342 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0; 343 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0; 344 return -1; 345 } 346 347 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false); 348 349 if (STAT_RECORD) { 350 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) { 351 pr_err("failed to write stat event\n"); 352 return -1; 353 } 354 } 355 356 if (verbose > 1) { 357 fprintf(stat_config.output, 358 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", 359 evsel__name(counter), 360 perf_cpu_map__cpu(evsel__cpus(counter), 361 cpu_map_idx).cpu, 362 count->val, count->ena, count->run); 363 } 364 } 365 366 return 0; 367} 368 369static int read_counters_with_affinity(void) 370{ 371 struct evlist_cpu_iterator evlist_cpu_itr; 372 struct affinity saved_affinity, *affinity; 373 374 if (all_counters_use_bpf) 375 return 0; 376 377 if (!target__has_cpu(&target) || target__has_per_thread(&target)) 378 affinity = NULL; 379 else if (affinity__setup(&saved_affinity) < 0) 380 return -1; 381 else 382 affinity = &saved_affinity; 383 384 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 385 struct evsel *counter = evlist_cpu_itr.evsel; 386 387 if (evsel__is_bpf(counter)) 388 continue; 389 390 if (evsel__is_tool(counter)) 391 continue; 392 393 if (!counter->err) 394 counter->err = read_counter_cpu(counter, evlist_cpu_itr.cpu_map_idx); 395 } 396 if (affinity) 397 affinity__cleanup(&saved_affinity); 398 399 return 0; 400} 401 402static int read_bpf_map_counters(void) 403{ 404 struct evsel *counter; 405 int err; 406 407 evlist__for_each_entry(evsel_list, counter) { 408 if (!evsel__is_bpf(counter)) 409 continue; 410 411 err = bpf_counter__read(counter); 412 if (err) 413 return err; 414 } 415 return 0; 416} 417 418static int read_tool_counters(void) 419{ 420 struct evsel *counter; 421 422 evlist__for_each_entry(evsel_list, counter) { 423 int idx; 424 425 if (!evsel__is_tool(counter)) 426 continue; 427 428 perf_cpu_map__for_each_idx(idx, counter->core.cpus) { 429 if (!counter->err) 430 counter->err = read_counter_cpu(counter, idx); 431 } 432 } 433 return 0; 434} 435 436static int read_counters(void) 437{ 438 int ret; 439 440 if (stat_config.stop_read_counter) 441 return 0; 442 443 // Read all BPF counters first. 444 ret = read_bpf_map_counters(); 445 if (ret) 446 return ret; 447 448 // Read non-BPF and non-tool counters next. 449 ret = read_counters_with_affinity(); 450 if (ret) 451 return ret; 452 453 // Read the tool counters last. This way the duration_time counter 454 // should always be greater than any other counter's enabled time. 455 return read_tool_counters(); 456} 457 458static void process_counters(void) 459{ 460 struct evsel *counter; 461 462 evlist__for_each_entry(evsel_list, counter) { 463 if (counter->err) 464 pr_debug("failed to read counter %s\n", counter->name); 465 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter)) 466 pr_warning("failed to process counter %s\n", counter->name); 467 counter->err = 0; 468 } 469 470 perf_stat_merge_counters(&stat_config, evsel_list); 471 perf_stat_process_percore(&stat_config, evsel_list); 472} 473 474static void process_interval(void) 475{ 476 struct timespec ts, rs; 477 478 clock_gettime(CLOCK_MONOTONIC, &ts); 479 diff_timespec(&rs, &ts, &ref_time); 480 481 evlist__reset_aggr_stats(evsel_list); 482 483 if (read_counters() == 0) 484 process_counters(); 485 486 if (STAT_RECORD) { 487 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) 488 pr_err("failed to write stat round event\n"); 489 } 490 491 init_stats(stat_config.walltime_nsecs_stats); 492 update_stats(stat_config.walltime_nsecs_stats, stat_config.interval * 1000000ULL); 493 print_counters(&rs, 0, NULL); 494} 495 496static bool handle_interval(unsigned int interval, int *times) 497{ 498 if (interval) { 499 process_interval(); 500 if (interval_count && !(--(*times))) 501 return true; 502 } 503 return false; 504} 505 506static int enable_counters(void) 507{ 508 struct evsel *evsel; 509 int err; 510 511 evlist__for_each_entry(evsel_list, evsel) { 512 if (!evsel__is_bpf(evsel)) 513 continue; 514 515 err = bpf_counter__enable(evsel); 516 if (err) 517 return err; 518 } 519 520 if (!target__enable_on_exec(&target)) { 521 if (!all_counters_use_bpf) 522 evlist__enable(evsel_list); 523 } 524 return 0; 525} 526 527static void disable_counters(void) 528{ 529 struct evsel *counter; 530 531 /* 532 * If we don't have tracee (attaching to task or cpu), counters may 533 * still be running. To get accurate group ratios, we must stop groups 534 * from counting before reading their constituent counters. 535 */ 536 if (!target__none(&target)) { 537 evlist__for_each_entry(evsel_list, counter) 538 bpf_counter__disable(counter); 539 if (!all_counters_use_bpf) 540 evlist__disable(evsel_list); 541 } 542} 543 544static volatile sig_atomic_t workload_exec_errno; 545 546/* 547 * evlist__prepare_workload will send a SIGUSR1 548 * if the fork fails, since we asked by setting its 549 * want_signal to true. 550 */ 551static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, 552 void *ucontext __maybe_unused) 553{ 554 workload_exec_errno = info->si_value.sival_int; 555} 556 557static bool evsel__should_store_id(struct evsel *counter) 558{ 559 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; 560} 561 562static bool is_target_alive(struct target *_target, 563 struct perf_thread_map *threads) 564{ 565 struct stat st; 566 int i; 567 568 if (!target__has_task(_target)) 569 return true; 570 571 for (i = 0; i < threads->nr; i++) { 572 char path[PATH_MAX]; 573 574 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), 575 threads->map[i].pid); 576 577 if (!stat(path, &st)) 578 return true; 579 } 580 581 return false; 582} 583 584static void process_evlist(struct evlist *evlist, unsigned int interval) 585{ 586 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; 587 588 if (evlist__ctlfd_process(evlist, &cmd) > 0) { 589 switch (cmd) { 590 case EVLIST_CTL_CMD_ENABLE: 591 fallthrough; 592 case EVLIST_CTL_CMD_DISABLE: 593 if (interval) 594 process_interval(); 595 break; 596 case EVLIST_CTL_CMD_SNAPSHOT: 597 case EVLIST_CTL_CMD_ACK: 598 case EVLIST_CTL_CMD_UNSUPPORTED: 599 case EVLIST_CTL_CMD_EVLIST: 600 case EVLIST_CTL_CMD_STOP: 601 case EVLIST_CTL_CMD_PING: 602 default: 603 break; 604 } 605 } 606} 607 608static void compute_tts(struct timespec *time_start, struct timespec *time_stop, 609 int *time_to_sleep) 610{ 611 int tts = *time_to_sleep; 612 struct timespec time_diff; 613 614 diff_timespec(&time_diff, time_stop, time_start); 615 616 tts -= time_diff.tv_sec * MSEC_PER_SEC + 617 time_diff.tv_nsec / NSEC_PER_MSEC; 618 619 if (tts < 0) 620 tts = 0; 621 622 *time_to_sleep = tts; 623} 624 625static int dispatch_events(bool forks, int timeout, int interval, int *times) 626{ 627 int child_exited = 0, status = 0; 628 int time_to_sleep, sleep_time; 629 struct timespec time_start, time_stop; 630 631 if (interval) 632 sleep_time = interval; 633 else if (timeout) 634 sleep_time = timeout; 635 else 636 sleep_time = 1000; 637 638 time_to_sleep = sleep_time; 639 640 while (!done) { 641 if (forks) 642 child_exited = waitpid(child_pid, &status, WNOHANG); 643 else 644 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; 645 646 if (child_exited) 647 break; 648 649 clock_gettime(CLOCK_MONOTONIC, &time_start); 650 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ 651 if (timeout || handle_interval(interval, times)) 652 break; 653 time_to_sleep = sleep_time; 654 } else { /* fd revent */ 655 process_evlist(evsel_list, interval); 656 clock_gettime(CLOCK_MONOTONIC, &time_stop); 657 compute_tts(&time_start, &time_stop, &time_to_sleep); 658 } 659 } 660 661 return status; 662} 663 664enum counter_recovery { 665 COUNTER_SKIP, 666 COUNTER_RETRY, 667}; 668 669static enum counter_recovery stat_handle_error(struct evsel *counter, int err) 670{ 671 char msg[BUFSIZ]; 672 673 assert(!counter->supported); 674 675 /* 676 * PPC returns ENXIO for HW counters until 2.6.37 677 * (behavior changed with commit b0a873e). 678 */ 679 if (err == EINVAL || err == ENOSYS || err == ENOENT || err == ENXIO) { 680 if (verbose > 0) { 681 evsel__open_strerror(counter, &target, err, msg, sizeof(msg)); 682 ui__warning("%s event is not supported by the kernel.\n%s\n", 683 evsel__name(counter), msg); 684 } 685 return COUNTER_SKIP; 686 } 687 if (evsel__fallback(counter, &target, err, msg, sizeof(msg))) { 688 if (verbose > 0) 689 ui__warning("%s\n", msg); 690 counter->supported = true; 691 return COUNTER_RETRY; 692 } 693 if (target__has_per_thread(&target) && err != EOPNOTSUPP && 694 evsel_list->core.threads && evsel_list->core.threads->err_thread != -1) { 695 /* 696 * For global --per-thread case, skip current 697 * error thread. 698 */ 699 if (!thread_map__remove(evsel_list->core.threads, 700 evsel_list->core.threads->err_thread)) { 701 evsel_list->core.threads->err_thread = -1; 702 counter->supported = true; 703 return COUNTER_RETRY; 704 } 705 } 706 if (verbose > 0) { 707 evsel__open_strerror(counter, &target, err, msg, sizeof(msg)); 708 ui__warning(err == EOPNOTSUPP 709 ? "%s event is not supported by the kernel.\n%s\n" 710 : "skipping event %s that kernel failed to open.\n%s\n", 711 evsel__name(counter), msg); 712 } 713 return COUNTER_SKIP; 714} 715 716static int create_perf_stat_counter(struct evsel *evsel, 717 struct perf_stat_config *config, 718 int cpu_map_idx) 719{ 720 struct perf_event_attr *attr = &evsel->core.attr; 721 struct evsel *leader = evsel__leader(evsel); 722 723 /* Reset supported flag as creating a stat counter is retried. */ 724 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | 725 PERF_FORMAT_TOTAL_TIME_RUNNING; 726 727 /* 728 * The event is part of non trivial group, let's enable 729 * the group read (for leader) and ID retrieval for all 730 * members. 731 */ 732 if (leader->core.nr_members > 1) 733 attr->read_format |= PERF_FORMAT_ID|PERF_FORMAT_GROUP; 734 735 attr->inherit = !config->no_inherit && list_empty(&evsel->bpf_counter_list); 736 737 /* 738 * Some events get initialized with sample_(period/type) set, 739 * like tracepoints. Clear it up for counting. 740 */ 741 attr->sample_period = 0; 742 743 if (config->identifier) 744 attr->sample_type = PERF_SAMPLE_IDENTIFIER; 745 746 if (config->all_user) { 747 attr->exclude_kernel = 1; 748 attr->exclude_user = 0; 749 } 750 751 if (config->all_kernel) { 752 attr->exclude_kernel = 0; 753 attr->exclude_user = 1; 754 } 755 756 /* 757 * Disabling all counters initially, they will be enabled 758 * either manually by us or by kernel via enable_on_exec 759 * set later. 760 */ 761 if (evsel__is_group_leader(evsel)) { 762 attr->disabled = 1; 763 764 if (target__enable_on_exec(&target)) 765 attr->enable_on_exec = 1; 766 } 767 768 return evsel__open_per_cpu_and_thread(evsel, evsel__cpus(evsel), cpu_map_idx, 769 evsel->core.threads); 770} 771 772static void update_rusage_stats(const struct rusage *rusage) 773{ 774 const u64 us_to_ns = 1000; 775 const u64 s_to_ns = 1000000000; 776 777 update_stats(&ru_stats.ru_utime_usec_stat, 778 (rusage->ru_utime.tv_usec * us_to_ns + rusage->ru_utime.tv_sec * s_to_ns)); 779 update_stats(&ru_stats.ru_stime_usec_stat, 780 (rusage->ru_stime.tv_usec * us_to_ns + rusage->ru_stime.tv_sec * s_to_ns)); 781} 782 783static int __run_perf_stat(int argc, const char **argv, int run_idx) 784{ 785 int interval = stat_config.interval; 786 int times = stat_config.times; 787 int timeout = stat_config.timeout; 788 char msg[BUFSIZ]; 789 unsigned long long t0, t1; 790 struct evsel *counter; 791 size_t l; 792 int status = 0; 793 const bool forks = (argc > 0); 794 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; 795 struct evlist_cpu_iterator evlist_cpu_itr; 796 struct affinity saved_affinity, *affinity = NULL; 797 int err, open_err = 0; 798 bool second_pass = false, has_supported_counters; 799 800 if (forks) { 801 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { 802 perror("failed to prepare workload"); 803 return -1; 804 } 805 child_pid = evsel_list->workload.pid; 806 } 807 808 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { 809 if (affinity__setup(&saved_affinity) < 0) { 810 err = -1; 811 goto err_out; 812 } 813 affinity = &saved_affinity; 814 } 815 816 evlist__for_each_entry(evsel_list, counter) { 817 counter->reset_group = false; 818 if (bpf_counter__load(counter, &target)) { 819 err = -1; 820 goto err_out; 821 } 822 if (!(evsel__is_bperf(counter))) 823 all_counters_use_bpf = false; 824 } 825 826 evlist__reset_aggr_stats(evsel_list); 827 828 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 829 counter = evlist_cpu_itr.evsel; 830 831 /* 832 * bperf calls evsel__open_per_cpu() in bperf__load(), so 833 * no need to call it again here. 834 */ 835 if (target.use_bpf) 836 break; 837 838 if (counter->reset_group || !counter->supported) 839 continue; 840 if (evsel__is_bperf(counter)) 841 continue; 842 843 while (true) { 844 if (create_perf_stat_counter(counter, &stat_config, 845 evlist_cpu_itr.cpu_map_idx) == 0) 846 break; 847 848 open_err = errno; 849 /* 850 * Weak group failed. We cannot just undo this here 851 * because earlier CPUs might be in group mode, and the kernel 852 * doesn't support mixing group and non group reads. Defer 853 * it to later. 854 * Don't close here because we're in the wrong affinity. 855 */ 856 if ((open_err == EINVAL || open_err == EBADF) && 857 evsel__leader(counter) != counter && 858 counter->weak_group) { 859 evlist__reset_weak_group(evsel_list, counter, false); 860 assert(counter->reset_group); 861 counter->supported = true; 862 second_pass = true; 863 break; 864 } 865 866 if (stat_handle_error(counter, open_err) != COUNTER_RETRY) 867 break; 868 } 869 } 870 871 if (second_pass) { 872 /* 873 * Now redo all the weak group after closing them, 874 * and also close errored counters. 875 */ 876 877 /* First close errored or weak retry */ 878 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 879 counter = evlist_cpu_itr.evsel; 880 881 if (!counter->reset_group && counter->supported) 882 continue; 883 884 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx); 885 } 886 /* Now reopen weak */ 887 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 888 counter = evlist_cpu_itr.evsel; 889 890 if (!counter->reset_group) 891 continue; 892 893 while (true) { 894 pr_debug2("reopening weak %s\n", evsel__name(counter)); 895 if (create_perf_stat_counter(counter, &stat_config, 896 evlist_cpu_itr.cpu_map_idx) == 0) 897 break; 898 899 open_err = errno; 900 if (stat_handle_error(counter, open_err) != COUNTER_RETRY) 901 break; 902 } 903 } 904 } 905 affinity__cleanup(affinity); 906 affinity = NULL; 907 908 has_supported_counters = false; 909 evlist__for_each_entry(evsel_list, counter) { 910 if (!counter->supported) { 911 perf_evsel__free_fd(&counter->core); 912 continue; 913 } 914 has_supported_counters = true; 915 916 l = strlen(counter->unit); 917 if (l > stat_config.unit_width) 918 stat_config.unit_width = l; 919 920 if (evsel__should_store_id(counter) && 921 evsel__store_ids(counter, evsel_list)) { 922 err = -1; 923 goto err_out; 924 } 925 } 926 if (!has_supported_counters && !stat_config.null_run) { 927 if (open_err) { 928 evsel__open_strerror(evlist__first(evsel_list), &target, open_err, 929 msg, sizeof(msg)); 930 } 931 ui__error("No supported events found.\n%s\n", msg); 932 933 if (child_pid != -1) 934 kill(child_pid, SIGTERM); 935 err = -1; 936 goto err_out; 937 } 938 939 if (evlist__apply_filters(evsel_list, &counter, &target)) { 940 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", 941 counter->filter, evsel__name(counter), errno, 942 str_error_r(errno, msg, sizeof(msg))); 943 return -1; 944 } 945 946 if (STAT_RECORD) { 947 int fd = perf_data__fd(&perf_stat.data); 948 949 if (is_pipe) { 950 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); 951 } else { 952 err = perf_session__write_header(perf_stat.session, evsel_list, 953 fd, false); 954 } 955 956 if (err < 0) 957 goto err_out; 958 959 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, 960 process_synthesized_event, is_pipe); 961 if (err < 0) 962 goto err_out; 963 964 } 965 966 if (target.initial_delay) { 967 pr_info(EVLIST_DISABLED_MSG); 968 } else { 969 err = enable_counters(); 970 if (err) { 971 err = -1; 972 goto err_out; 973 } 974 } 975 976 /* Exec the command, if any */ 977 if (forks) 978 evlist__start_workload(evsel_list); 979 980 if (target.initial_delay > 0) { 981 usleep(target.initial_delay * USEC_PER_MSEC); 982 err = enable_counters(); 983 if (err) { 984 err = -1; 985 goto err_out; 986 } 987 988 pr_info(EVLIST_ENABLED_MSG); 989 } 990 991 t0 = rdclock(); 992 clock_gettime(CLOCK_MONOTONIC, &ref_time); 993 994 if (forks) { 995 if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) 996 status = dispatch_events(forks, timeout, interval, ×); 997 if (child_pid != -1) { 998 if (timeout) 999 kill(child_pid, SIGTERM); 1000 wait4(child_pid, &status, 0, &stat_config.ru_data); 1001 } 1002 1003 if (workload_exec_errno) { 1004 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); 1005 pr_err("Workload failed: %s\n", emsg); 1006 err = -1; 1007 goto err_out; 1008 } 1009 1010 if (WIFSIGNALED(status)) { 1011 /* 1012 * We want to indicate failure to stop a repeat run, 1013 * hence negative. We want the value to be the exit code 1014 * of perf, which for termination by a signal is 128 1015 * plus the signal number. 1016 */ 1017 err = 0 - (128 + WTERMSIG(status)); 1018 psignal(WTERMSIG(status), argv[0]); 1019 } else { 1020 err = WEXITSTATUS(status); 1021 } 1022 } else { 1023 err = dispatch_events(forks, timeout, interval, ×); 1024 } 1025 1026 disable_counters(); 1027 1028 t1 = rdclock(); 1029 1030 if (stat_config.walltime_run_table) 1031 stat_config.walltime_run[run_idx] = t1 - t0; 1032 1033 if (interval && stat_config.summary) { 1034 stat_config.interval = 0; 1035 stat_config.stop_read_counter = true; 1036 init_stats(stat_config.walltime_nsecs_stats); 1037 update_stats(stat_config.walltime_nsecs_stats, t1 - t0); 1038 1039 evlist__copy_prev_raw_counts(evsel_list); 1040 evlist__reset_prev_raw_counts(evsel_list); 1041 evlist__reset_aggr_stats(evsel_list); 1042 } else { 1043 update_stats(stat_config.walltime_nsecs_stats, t1 - t0); 1044 update_rusage_stats(&stat_config.ru_data); 1045 } 1046 1047 /* 1048 * Closing a group leader splits the group, and as we only disable 1049 * group leaders, results in remaining events becoming enabled. To 1050 * avoid arbitrary skew, we must read all counters before closing any 1051 * group leaders. 1052 */ 1053 if (read_counters() == 0) 1054 process_counters(); 1055 1056 /* 1057 * We need to keep evsel_list alive, because it's processed 1058 * later the evsel_list will be closed after. 1059 */ 1060 if (!STAT_RECORD) 1061 evlist__close(evsel_list); 1062 1063 return err; 1064 1065err_out: 1066 if (forks) 1067 evlist__cancel_workload(evsel_list); 1068 1069 affinity__cleanup(affinity); 1070 return err; 1071} 1072 1073/* 1074 * Returns -1 for fatal errors which signifies to not continue 1075 * when in repeat mode. 1076 * 1077 * Returns < -1 error codes when stat record is used. These 1078 * result in the stat information being displayed, but writing 1079 * to the file fails and is non fatal. 1080 */ 1081static int run_perf_stat(int argc, const char **argv, int run_idx) 1082{ 1083 int ret; 1084 1085 if (pre_cmd) { 1086 ret = system(pre_cmd); 1087 if (ret) 1088 return ret; 1089 } 1090 1091 if (sync_run) 1092 sync(); 1093 1094 ret = __run_perf_stat(argc, argv, run_idx); 1095 if (ret) 1096 return ret; 1097 1098 if (post_cmd) { 1099 ret = system(post_cmd); 1100 if (ret) 1101 return ret; 1102 } 1103 1104 return ret; 1105} 1106 1107static void print_counters(struct timespec *ts, int argc, const char **argv) 1108{ 1109 /* Do not print anything if we record to the pipe. */ 1110 if (STAT_RECORD && perf_stat.data.is_pipe) 1111 return; 1112 if (quiet) 1113 return; 1114 1115 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); 1116} 1117 1118static volatile sig_atomic_t signr = -1; 1119 1120static void skip_signal(int signo) 1121{ 1122 if ((child_pid == -1) || stat_config.interval) 1123 done = 1; 1124 1125 signr = signo; 1126 /* 1127 * render child_pid harmless 1128 * won't send SIGTERM to a random 1129 * process in case of race condition 1130 * and fast PID recycling 1131 */ 1132 child_pid = -1; 1133} 1134 1135static void sig_atexit(void) 1136{ 1137 sigset_t set, oset; 1138 1139 /* 1140 * avoid race condition with SIGCHLD handler 1141 * in skip_signal() which is modifying child_pid 1142 * goal is to avoid send SIGTERM to a random 1143 * process 1144 */ 1145 sigemptyset(&set); 1146 sigaddset(&set, SIGCHLD); 1147 sigprocmask(SIG_BLOCK, &set, &oset); 1148 1149 if (child_pid != -1) 1150 kill(child_pid, SIGTERM); 1151 1152 sigprocmask(SIG_SETMASK, &oset, NULL); 1153 1154 if (signr == -1) 1155 return; 1156 1157 signal(signr, SIG_DFL); 1158 kill(getpid(), signr); 1159} 1160 1161static int stat__set_big_num(const struct option *opt __maybe_unused, 1162 const char *s __maybe_unused, int unset) 1163{ 1164 big_num_opt = unset ? 0 : 1; 1165 perf_stat__set_big_num(!unset); 1166 return 0; 1167} 1168 1169static int enable_metric_only(const struct option *opt __maybe_unused, 1170 const char *s __maybe_unused, int unset) 1171{ 1172 force_metric_only = true; 1173 stat_config.metric_only = !unset; 1174 return 0; 1175} 1176 1177static int append_metric_groups(const struct option *opt __maybe_unused, 1178 const char *str, 1179 int unset __maybe_unused) 1180{ 1181 if (metrics) { 1182 char *tmp; 1183 1184 if (asprintf(&tmp, "%s,%s", metrics, str) < 0) 1185 return -ENOMEM; 1186 free(metrics); 1187 metrics = tmp; 1188 } else { 1189 metrics = strdup(str); 1190 if (!metrics) 1191 return -ENOMEM; 1192 } 1193 return 0; 1194} 1195 1196static int parse_control_option(const struct option *opt, 1197 const char *str, 1198 int unset __maybe_unused) 1199{ 1200 struct perf_stat_config *config = opt->value; 1201 1202 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); 1203} 1204 1205static int parse_stat_cgroups(const struct option *opt, 1206 const char *str, int unset) 1207{ 1208 if (stat_config.cgroup_list) { 1209 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 1210 return -1; 1211 } 1212 1213 return parse_cgroups(opt, str, unset); 1214} 1215 1216static int parse_cputype(const struct option *opt, 1217 const char *str, 1218 int unset __maybe_unused) 1219{ 1220 const struct perf_pmu *pmu; 1221 struct evlist *evlist = *(struct evlist **)opt->value; 1222 1223 if (!list_empty(&evlist->core.entries)) { 1224 fprintf(stderr, "Must define cputype before events/metrics\n"); 1225 return -1; 1226 } 1227 1228 pmu = perf_pmus__pmu_for_pmu_filter(str); 1229 if (!pmu) { 1230 fprintf(stderr, "--cputype %s is not supported!\n", str); 1231 return -1; 1232 } 1233 parse_events_option_args.pmu_filter = pmu->name; 1234 1235 return 0; 1236} 1237 1238static int parse_cache_level(const struct option *opt, 1239 const char *str, 1240 int unset __maybe_unused) 1241{ 1242 int level; 1243 struct opt_aggr_mode *opt_aggr_mode = (struct opt_aggr_mode *)opt->value; 1244 u32 *aggr_level = (u32 *)opt->data; 1245 1246 /* 1247 * If no string is specified, aggregate based on the topology of 1248 * Last Level Cache (LLC). Since the LLC level can change from 1249 * architecture to architecture, set level greater than 1250 * MAX_CACHE_LVL which will be interpreted as LLC. 1251 */ 1252 if (str == NULL) { 1253 level = MAX_CACHE_LVL + 1; 1254 goto out; 1255 } 1256 1257 /* 1258 * The format to specify cache level is LX or lX where X is the 1259 * cache level. 1260 */ 1261 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) { 1262 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n", 1263 MAX_CACHE_LVL, 1264 MAX_CACHE_LVL); 1265 return -EINVAL; 1266 } 1267 1268 level = atoi(&str[1]); 1269 if (level < 1) { 1270 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n", 1271 MAX_CACHE_LVL, 1272 MAX_CACHE_LVL); 1273 return -EINVAL; 1274 } 1275 1276 if (level > MAX_CACHE_LVL) { 1277 pr_err("perf only supports max cache level of %d.\n" 1278 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL); 1279 return -EINVAL; 1280 } 1281out: 1282 opt_aggr_mode->cache = true; 1283 *aggr_level = level; 1284 return 0; 1285} 1286 1287/** 1288 * Calculate the cache instance ID from the map in 1289 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list 1290 * Cache instance ID is the first CPU reported in the shared_cpu_list file. 1291 */ 1292static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map) 1293{ 1294 int id; 1295 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map); 1296 1297 /* 1298 * If the map contains no CPU, consider the current CPU to 1299 * be the first online CPU in the cache domain else use the 1300 * first online CPU of the cache domain as the ID. 1301 */ 1302 id = perf_cpu_map__min(cpu_map).cpu; 1303 if (id == -1) 1304 id = cpu.cpu; 1305 1306 /* Free the perf_cpu_map used to find the cache ID */ 1307 perf_cpu_map__put(cpu_map); 1308 1309 return id; 1310} 1311 1312/** 1313 * cpu__get_cache_id - Returns 0 if successful in populating the 1314 * cache level and cache id. Cache level is read from 1315 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID 1316 * is the first CPU reported by 1317 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list 1318 */ 1319static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache) 1320{ 1321 int ret = 0; 1322 u32 cache_level = stat_config.aggr_level; 1323 struct cpu_cache_level caches[MAX_CACHE_LVL]; 1324 u32 i = 0, caches_cnt = 0; 1325 1326 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level; 1327 cache->cache = -1; 1328 1329 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt); 1330 if (ret) { 1331 /* 1332 * If caches_cnt is not 0, cpu_cache_level data 1333 * was allocated when building the topology. 1334 * Free the allocated data before returning. 1335 */ 1336 if (caches_cnt) 1337 goto free_caches; 1338 1339 return ret; 1340 } 1341 1342 if (!caches_cnt) 1343 return -1; 1344 1345 /* 1346 * Save the data for the highest level if no 1347 * level was specified by the user. 1348 */ 1349 if (cache_level > MAX_CACHE_LVL) { 1350 int max_level_index = 0; 1351 1352 for (i = 1; i < caches_cnt; ++i) { 1353 if (caches[i].level > caches[max_level_index].level) 1354 max_level_index = i; 1355 } 1356 1357 cache->cache_lvl = caches[max_level_index].level; 1358 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map); 1359 1360 /* Reset i to 0 to free entire caches[] */ 1361 i = 0; 1362 goto free_caches; 1363 } 1364 1365 for (i = 0; i < caches_cnt; ++i) { 1366 if (caches[i].level == cache_level) { 1367 cache->cache_lvl = cache_level; 1368 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map); 1369 } 1370 1371 cpu_cache_level__free(&caches[i]); 1372 } 1373 1374free_caches: 1375 /* 1376 * Free all the allocated cpu_cache_level data. 1377 */ 1378 while (i < caches_cnt) 1379 cpu_cache_level__free(&caches[i++]); 1380 1381 return ret; 1382} 1383 1384/** 1385 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache 1386 * level, die and socket populated with the cache instache ID, cache level, 1387 * die and socket for cpu. The function signature is compatible with 1388 * aggr_cpu_id_get_t. 1389 */ 1390static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data) 1391{ 1392 int ret; 1393 struct aggr_cpu_id id; 1394 struct perf_cache cache; 1395 1396 id = aggr_cpu_id__die(cpu, data); 1397 if (aggr_cpu_id__is_empty(&id)) 1398 return id; 1399 1400 ret = cpu__get_cache_details(cpu, &cache); 1401 if (ret) 1402 return id; 1403 1404 id.cache_lvl = cache.cache_lvl; 1405 id.cache = cache.cache; 1406 return id; 1407} 1408 1409static const char *const aggr_mode__string[] = { 1410 [AGGR_CORE] = "core", 1411 [AGGR_CACHE] = "cache", 1412 [AGGR_CLUSTER] = "cluster", 1413 [AGGR_DIE] = "die", 1414 [AGGR_GLOBAL] = "global", 1415 [AGGR_NODE] = "node", 1416 [AGGR_NONE] = "none", 1417 [AGGR_SOCKET] = "socket", 1418 [AGGR_THREAD] = "thread", 1419 [AGGR_UNSET] = "unset", 1420}; 1421 1422static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, 1423 struct perf_cpu cpu) 1424{ 1425 return aggr_cpu_id__socket(cpu, /*data=*/NULL); 1426} 1427 1428static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, 1429 struct perf_cpu cpu) 1430{ 1431 return aggr_cpu_id__die(cpu, /*data=*/NULL); 1432} 1433 1434static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused, 1435 struct perf_cpu cpu) 1436{ 1437 return aggr_cpu_id__cache(cpu, /*data=*/NULL); 1438} 1439 1440static struct aggr_cpu_id perf_stat__get_cluster(struct perf_stat_config *config __maybe_unused, 1441 struct perf_cpu cpu) 1442{ 1443 return aggr_cpu_id__cluster(cpu, /*data=*/NULL); 1444} 1445 1446static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, 1447 struct perf_cpu cpu) 1448{ 1449 return aggr_cpu_id__core(cpu, /*data=*/NULL); 1450} 1451 1452static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, 1453 struct perf_cpu cpu) 1454{ 1455 return aggr_cpu_id__node(cpu, /*data=*/NULL); 1456} 1457 1458static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused, 1459 struct perf_cpu cpu) 1460{ 1461 return aggr_cpu_id__global(cpu, /*data=*/NULL); 1462} 1463 1464static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused, 1465 struct perf_cpu cpu) 1466{ 1467 return aggr_cpu_id__cpu(cpu, /*data=*/NULL); 1468} 1469 1470static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, 1471 aggr_get_id_t get_id, struct perf_cpu cpu) 1472{ 1473 struct aggr_cpu_id id; 1474 1475 /* per-process mode - should use global aggr mode */ 1476 if (cpu.cpu == -1 || cpu.cpu >= config->cpus_aggr_map->nr) 1477 return get_id(config, cpu); 1478 1479 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) 1480 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); 1481 1482 id = config->cpus_aggr_map->map[cpu.cpu]; 1483 return id; 1484} 1485 1486static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, 1487 struct perf_cpu cpu) 1488{ 1489 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); 1490} 1491 1492static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, 1493 struct perf_cpu cpu) 1494{ 1495 return perf_stat__get_aggr(config, perf_stat__get_die, cpu); 1496} 1497 1498static struct aggr_cpu_id perf_stat__get_cluster_cached(struct perf_stat_config *config, 1499 struct perf_cpu cpu) 1500{ 1501 return perf_stat__get_aggr(config, perf_stat__get_cluster, cpu); 1502} 1503 1504static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config, 1505 struct perf_cpu cpu) 1506{ 1507 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu); 1508} 1509 1510static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, 1511 struct perf_cpu cpu) 1512{ 1513 return perf_stat__get_aggr(config, perf_stat__get_core, cpu); 1514} 1515 1516static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, 1517 struct perf_cpu cpu) 1518{ 1519 return perf_stat__get_aggr(config, perf_stat__get_node, cpu); 1520} 1521 1522static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config, 1523 struct perf_cpu cpu) 1524{ 1525 return perf_stat__get_aggr(config, perf_stat__get_global, cpu); 1526} 1527 1528static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config, 1529 struct perf_cpu cpu) 1530{ 1531 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu); 1532} 1533 1534static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) 1535{ 1536 switch (aggr_mode) { 1537 case AGGR_SOCKET: 1538 return aggr_cpu_id__socket; 1539 case AGGR_DIE: 1540 return aggr_cpu_id__die; 1541 case AGGR_CLUSTER: 1542 return aggr_cpu_id__cluster; 1543 case AGGR_CACHE: 1544 return aggr_cpu_id__cache; 1545 case AGGR_CORE: 1546 return aggr_cpu_id__core; 1547 case AGGR_NODE: 1548 return aggr_cpu_id__node; 1549 case AGGR_NONE: 1550 return aggr_cpu_id__cpu; 1551 case AGGR_GLOBAL: 1552 return aggr_cpu_id__global; 1553 case AGGR_THREAD: 1554 case AGGR_UNSET: 1555 case AGGR_MAX: 1556 default: 1557 return NULL; 1558 } 1559} 1560 1561static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) 1562{ 1563 switch (aggr_mode) { 1564 case AGGR_SOCKET: 1565 return perf_stat__get_socket_cached; 1566 case AGGR_DIE: 1567 return perf_stat__get_die_cached; 1568 case AGGR_CLUSTER: 1569 return perf_stat__get_cluster_cached; 1570 case AGGR_CACHE: 1571 return perf_stat__get_cache_id_cached; 1572 case AGGR_CORE: 1573 return perf_stat__get_core_cached; 1574 case AGGR_NODE: 1575 return perf_stat__get_node_cached; 1576 case AGGR_NONE: 1577 return perf_stat__get_cpu_cached; 1578 case AGGR_GLOBAL: 1579 return perf_stat__get_global_cached; 1580 case AGGR_THREAD: 1581 case AGGR_UNSET: 1582 case AGGR_MAX: 1583 default: 1584 return NULL; 1585 } 1586} 1587 1588static int perf_stat_init_aggr_mode(void) 1589{ 1590 int nr; 1591 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); 1592 1593 if (get_id) { 1594 bool needs_sort = stat_config.aggr_mode != AGGR_NONE; 1595 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1596 get_id, /*data=*/NULL, needs_sort); 1597 if (!stat_config.aggr_map) { 1598 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]); 1599 return -1; 1600 } 1601 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); 1602 } 1603 1604 if (stat_config.aggr_mode == AGGR_THREAD) { 1605 nr = perf_thread_map__nr(evsel_list->core.threads); 1606 stat_config.aggr_map = cpu_aggr_map__empty_new(nr); 1607 if (stat_config.aggr_map == NULL) 1608 return -ENOMEM; 1609 1610 for (int s = 0; s < nr; s++) { 1611 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1612 1613 id.thread_idx = s; 1614 stat_config.aggr_map->map[s] = id; 1615 } 1616 return 0; 1617 } 1618 1619 /* 1620 * The evsel_list->cpus is the base we operate on, 1621 * taking the highest cpu number to be the size of 1622 * the aggregation translate cpumap. 1623 */ 1624 nr = perf_cpu_map__max(evsel_list->core.all_cpus).cpu + 1; 1625 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr); 1626 return stat_config.cpus_aggr_map ? 0 : -ENOMEM; 1627} 1628 1629static void cpu_aggr_map__delete(struct cpu_aggr_map *map) 1630{ 1631 free(map); 1632} 1633 1634static void perf_stat__exit_aggr_mode(void) 1635{ 1636 cpu_aggr_map__delete(stat_config.aggr_map); 1637 cpu_aggr_map__delete(stat_config.cpus_aggr_map); 1638 stat_config.aggr_map = NULL; 1639 stat_config.cpus_aggr_map = NULL; 1640} 1641 1642static struct aggr_cpu_id perf_env__get_socket_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 id.socket = env->cpu[cpu.cpu].socket_id; 1649 1650 return id; 1651} 1652 1653static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) 1654{ 1655 struct perf_env *env = data; 1656 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1657 1658 if (cpu.cpu != -1) { 1659 /* 1660 * die_id is relative to socket, so start 1661 * with the socket ID and then add die to 1662 * make a unique ID. 1663 */ 1664 id.socket = env->cpu[cpu.cpu].socket_id; 1665 id.die = env->cpu[cpu.cpu].die_id; 1666 } 1667 1668 return id; 1669} 1670 1671static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env, 1672 u32 cache_level, struct aggr_cpu_id *id) 1673{ 1674 int i; 1675 int caches_cnt = env->caches_cnt; 1676 struct cpu_cache_level *caches = env->caches; 1677 1678 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level; 1679 id->cache = -1; 1680 1681 if (!caches_cnt) 1682 return; 1683 1684 for (i = caches_cnt - 1; i > -1; --i) { 1685 struct perf_cpu_map *cpu_map; 1686 int map_contains_cpu; 1687 1688 /* 1689 * If user has not specified a level, find the fist level with 1690 * the cpu in the map. Since building the map is expensive, do 1691 * this only if levels match. 1692 */ 1693 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level) 1694 continue; 1695 1696 cpu_map = perf_cpu_map__new(caches[i].map); 1697 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu); 1698 perf_cpu_map__put(cpu_map); 1699 1700 if (map_contains_cpu != -1) { 1701 id->cache_lvl = caches[i].level; 1702 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map); 1703 return; 1704 } 1705 } 1706} 1707 1708static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu, 1709 void *data) 1710{ 1711 struct perf_env *env = data; 1712 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1713 1714 if (cpu.cpu != -1) { 1715 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level; 1716 1717 id.socket = env->cpu[cpu.cpu].socket_id; 1718 id.die = env->cpu[cpu.cpu].die_id; 1719 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id); 1720 } 1721 1722 return id; 1723} 1724 1725static struct aggr_cpu_id perf_env__get_cluster_aggr_by_cpu(struct perf_cpu cpu, 1726 void *data) 1727{ 1728 struct perf_env *env = data; 1729 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1730 1731 if (cpu.cpu != -1) { 1732 id.socket = env->cpu[cpu.cpu].socket_id; 1733 id.die = env->cpu[cpu.cpu].die_id; 1734 id.cluster = env->cpu[cpu.cpu].cluster_id; 1735 } 1736 1737 return id; 1738} 1739 1740static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) 1741{ 1742 struct perf_env *env = data; 1743 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1744 1745 if (cpu.cpu != -1) { 1746 /* 1747 * core_id is relative to socket, die and cluster, we need a 1748 * global id. So we set socket, die id, cluster id and core id. 1749 */ 1750 id.socket = env->cpu[cpu.cpu].socket_id; 1751 id.die = env->cpu[cpu.cpu].die_id; 1752 id.cluster = env->cpu[cpu.cpu].cluster_id; 1753 id.core = env->cpu[cpu.cpu].core_id; 1754 } 1755 1756 return id; 1757} 1758 1759static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data) 1760{ 1761 struct perf_env *env = data; 1762 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1763 1764 if (cpu.cpu != -1) { 1765 /* 1766 * core_id is relative to socket and die, 1767 * we need a global id. So we set 1768 * socket, die id and core id 1769 */ 1770 id.socket = env->cpu[cpu.cpu].socket_id; 1771 id.die = env->cpu[cpu.cpu].die_id; 1772 id.core = env->cpu[cpu.cpu].core_id; 1773 id.cpu = cpu; 1774 } 1775 1776 return id; 1777} 1778 1779static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) 1780{ 1781 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1782 1783 id.node = perf_env__numa_node(data, cpu); 1784 return id; 1785} 1786 1787static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused, 1788 void *data __maybe_unused) 1789{ 1790 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1791 1792 /* it always aggregates to the cpu 0 */ 1793 id.cpu = (struct perf_cpu){ .cpu = 0 }; 1794 return id; 1795} 1796 1797static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, 1798 struct perf_cpu cpu) 1799{ 1800 return perf_env__get_socket_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1801} 1802static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, 1803 struct perf_cpu cpu) 1804{ 1805 return perf_env__get_die_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1806} 1807 1808static struct aggr_cpu_id perf_stat__get_cluster_file(struct perf_stat_config *config __maybe_unused, 1809 struct perf_cpu cpu) 1810{ 1811 return perf_env__get_cluster_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1812} 1813 1814static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused, 1815 struct perf_cpu cpu) 1816{ 1817 return perf_env__get_cache_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1818} 1819 1820static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, 1821 struct perf_cpu cpu) 1822{ 1823 return perf_env__get_core_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1824} 1825 1826static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused, 1827 struct perf_cpu cpu) 1828{ 1829 return perf_env__get_cpu_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1830} 1831 1832static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, 1833 struct perf_cpu cpu) 1834{ 1835 return perf_env__get_node_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1836} 1837 1838static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused, 1839 struct perf_cpu cpu) 1840{ 1841 return perf_env__get_global_aggr_by_cpu(cpu, perf_session__env(perf_stat.session)); 1842} 1843 1844static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) 1845{ 1846 switch (aggr_mode) { 1847 case AGGR_SOCKET: 1848 return perf_env__get_socket_aggr_by_cpu; 1849 case AGGR_DIE: 1850 return perf_env__get_die_aggr_by_cpu; 1851 case AGGR_CLUSTER: 1852 return perf_env__get_cluster_aggr_by_cpu; 1853 case AGGR_CACHE: 1854 return perf_env__get_cache_aggr_by_cpu; 1855 case AGGR_CORE: 1856 return perf_env__get_core_aggr_by_cpu; 1857 case AGGR_NODE: 1858 return perf_env__get_node_aggr_by_cpu; 1859 case AGGR_GLOBAL: 1860 return perf_env__get_global_aggr_by_cpu; 1861 case AGGR_NONE: 1862 return perf_env__get_cpu_aggr_by_cpu; 1863 case AGGR_THREAD: 1864 case AGGR_UNSET: 1865 case AGGR_MAX: 1866 default: 1867 return NULL; 1868 } 1869} 1870 1871static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) 1872{ 1873 switch (aggr_mode) { 1874 case AGGR_SOCKET: 1875 return perf_stat__get_socket_file; 1876 case AGGR_DIE: 1877 return perf_stat__get_die_file; 1878 case AGGR_CLUSTER: 1879 return perf_stat__get_cluster_file; 1880 case AGGR_CACHE: 1881 return perf_stat__get_cache_file; 1882 case AGGR_CORE: 1883 return perf_stat__get_core_file; 1884 case AGGR_NODE: 1885 return perf_stat__get_node_file; 1886 case AGGR_GLOBAL: 1887 return perf_stat__get_global_file; 1888 case AGGR_NONE: 1889 return perf_stat__get_cpu_file; 1890 case AGGR_THREAD: 1891 case AGGR_UNSET: 1892 case AGGR_MAX: 1893 default: 1894 return NULL; 1895 } 1896} 1897 1898static int perf_stat_init_aggr_mode_file(struct perf_stat *st) 1899{ 1900 struct perf_env *env = perf_session__env(st->session); 1901 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); 1902 bool needs_sort = stat_config.aggr_mode != AGGR_NONE; 1903 1904 if (stat_config.aggr_mode == AGGR_THREAD) { 1905 int nr = perf_thread_map__nr(evsel_list->core.threads); 1906 1907 stat_config.aggr_map = cpu_aggr_map__empty_new(nr); 1908 if (stat_config.aggr_map == NULL) 1909 return -ENOMEM; 1910 1911 for (int s = 0; s < nr; s++) { 1912 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1913 1914 id.thread_idx = s; 1915 stat_config.aggr_map->map[s] = id; 1916 } 1917 return 0; 1918 } 1919 1920 if (!get_id) 1921 return 0; 1922 1923 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1924 get_id, env, needs_sort); 1925 if (!stat_config.aggr_map) { 1926 pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]); 1927 return -1; 1928 } 1929 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode); 1930 return 0; 1931} 1932 1933static int default_evlist_evsel_cmp(void *priv __maybe_unused, 1934 const struct list_head *l, 1935 const struct list_head *r) 1936{ 1937 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); 1938 const struct evsel *lhs = container_of(lhs_core, struct evsel, core); 1939 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); 1940 const struct evsel *rhs = container_of(rhs_core, struct evsel, core); 1941 1942 if (evsel__leader(lhs) == evsel__leader(rhs)) { 1943 /* Within the same group, respect the original order. */ 1944 return lhs_core->idx - rhs_core->idx; 1945 } 1946 1947 /* Sort default metrics evsels first, and default show events before those. */ 1948 if (lhs->default_metricgroup != rhs->default_metricgroup) 1949 return lhs->default_metricgroup ? -1 : 1; 1950 1951 if (lhs->default_show_events != rhs->default_show_events) 1952 return lhs->default_show_events ? -1 : 1; 1953 1954 /* Sort by PMU type (prefers legacy types first). */ 1955 if (lhs->pmu != rhs->pmu) 1956 return lhs->pmu->type - rhs->pmu->type; 1957 1958 /* Sort by name. */ 1959 return strcmp(evsel__name((struct evsel *)lhs), evsel__name((struct evsel *)rhs)); 1960} 1961 1962/* 1963 * Add default events, if there were no attributes specified or 1964 * if -d/--detailed, -d -d or -d -d -d is used: 1965 */ 1966static int add_default_events(void) 1967{ 1968 const char *pmu = parse_events_option_args.pmu_filter ?: "all"; 1969 struct parse_events_error err; 1970 struct evlist *evlist = evlist__new(); 1971 struct evsel *evsel; 1972 int ret = 0; 1973 1974 if (!evlist) 1975 return -ENOMEM; 1976 1977 parse_events_error__init(&err); 1978 1979 /* Set attrs if no event is selected and !null_run: */ 1980 if (stat_config.null_run) 1981 goto out; 1982 1983 if (transaction_run) { 1984 /* Handle -T as -M transaction. Once platform specific metrics 1985 * support has been added to the json files, all architectures 1986 * will use this approach. To determine transaction support 1987 * on an architecture test for such a metric name. 1988 */ 1989 if (!metricgroup__has_metric_or_groups(pmu, "transaction")) { 1990 pr_err("Missing transaction metrics\n"); 1991 ret = -1; 1992 goto out; 1993 } 1994 ret = metricgroup__parse_groups(evlist, pmu, "transaction", 1995 stat_config.metric_no_group, 1996 stat_config.metric_no_merge, 1997 stat_config.metric_no_threshold, 1998 stat_config.user_requested_cpu_list, 1999 stat_config.system_wide, 2000 stat_config.hardware_aware_grouping); 2001 goto out; 2002 } 2003 2004 if (smi_cost) { 2005 int smi; 2006 2007 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { 2008 pr_err("freeze_on_smi is not supported.\n"); 2009 ret = -1; 2010 goto out; 2011 } 2012 2013 if (!smi) { 2014 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { 2015 pr_err("Failed to set freeze_on_smi.\n"); 2016 ret = -1; 2017 goto out; 2018 } 2019 smi_reset = true; 2020 } 2021 2022 if (!metricgroup__has_metric_or_groups(pmu, "smi")) { 2023 pr_err("Missing smi metrics\n"); 2024 ret = -1; 2025 goto out; 2026 } 2027 2028 if (!force_metric_only) 2029 stat_config.metric_only = true; 2030 2031 ret = metricgroup__parse_groups(evlist, pmu, "smi", 2032 stat_config.metric_no_group, 2033 stat_config.metric_no_merge, 2034 stat_config.metric_no_threshold, 2035 stat_config.user_requested_cpu_list, 2036 stat_config.system_wide, 2037 stat_config.hardware_aware_grouping); 2038 goto out; 2039 } 2040 2041 if (topdown_run) { 2042 unsigned int max_level = metricgroups__topdown_max_level(); 2043 char str[] = "TopdownL1"; 2044 2045 if (!force_metric_only) 2046 stat_config.metric_only = true; 2047 2048 if (!max_level) { 2049 pr_err("Topdown requested but the topdown metric groups aren't present.\n" 2050 "(See perf list the metric groups have names like TopdownL1)\n"); 2051 ret = -1; 2052 goto out; 2053 } 2054 if (stat_config.topdown_level > max_level) { 2055 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); 2056 ret = -1; 2057 goto out; 2058 } else if (!stat_config.topdown_level) { 2059 stat_config.topdown_level = 1; 2060 } 2061 if (!stat_config.interval && !stat_config.metric_only) { 2062 fprintf(stat_config.output, 2063 "Topdown accuracy may decrease when measuring long periods.\n" 2064 "Please print the result regularly, e.g. -I1000\n"); 2065 } 2066 str[8] = stat_config.topdown_level + '0'; 2067 if (metricgroup__parse_groups(evlist, 2068 pmu, str, 2069 /*metric_no_group=*/false, 2070 /*metric_no_merge=*/false, 2071 /*metric_no_threshold=*/true, 2072 stat_config.user_requested_cpu_list, 2073 stat_config.system_wide, 2074 stat_config.hardware_aware_grouping) < 0) { 2075 ret = -1; 2076 goto out; 2077 } 2078 } 2079 2080 if (!stat_config.topdown_level) 2081 stat_config.topdown_level = 1; 2082 2083 if (!evlist->core.nr_entries && !evsel_list->core.nr_entries) { 2084 /* 2085 * Add Default metrics. To minimize multiplexing, don't request 2086 * threshold computation, but it will be computed if the events 2087 * are present. 2088 */ 2089 const char *default_metricgroup_names[] = { 2090 "Default", "Default2", "Default3", "Default4", 2091 }; 2092 2093 for (size_t i = 0; i < ARRAY_SIZE(default_metricgroup_names); i++) { 2094 struct evlist *metric_evlist; 2095 2096 if (!metricgroup__has_metric_or_groups(pmu, default_metricgroup_names[i])) 2097 continue; 2098 2099 if ((int)i > detailed_run) 2100 break; 2101 2102 metric_evlist = evlist__new(); 2103 if (!metric_evlist) { 2104 ret = -ENOMEM; 2105 break; 2106 } 2107 if (metricgroup__parse_groups(metric_evlist, pmu, default_metricgroup_names[i], 2108 /*metric_no_group=*/false, 2109 /*metric_no_merge=*/false, 2110 /*metric_no_threshold=*/true, 2111 stat_config.user_requested_cpu_list, 2112 stat_config.system_wide, 2113 stat_config.hardware_aware_grouping) < 0) { 2114 evlist__delete(metric_evlist); 2115 ret = -1; 2116 break; 2117 } 2118 2119 evlist__for_each_entry(metric_evlist, evsel) 2120 evsel->default_metricgroup = true; 2121 2122 evlist__splice_list_tail(evlist, &metric_evlist->core.entries); 2123 metricgroup__copy_metric_events(evlist, /*cgrp=*/NULL, 2124 &evlist->metric_events, 2125 &metric_evlist->metric_events); 2126 evlist__delete(metric_evlist); 2127 } 2128 list_sort(/*priv=*/NULL, &evlist->core.entries, default_evlist_evsel_cmp); 2129 2130 } 2131out: 2132 if (!ret) { 2133 evlist__for_each_entry(evlist, evsel) { 2134 /* 2135 * Make at least one event non-skippable so fatal errors are visible. 2136 * 'cycles' always used to be default and non-skippable, so use that. 2137 */ 2138 if (!evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) 2139 evsel->skippable = true; 2140 } 2141 } 2142 parse_events_error__exit(&err); 2143 evlist__splice_list_tail(evsel_list, &evlist->core.entries); 2144 metricgroup__copy_metric_events(evsel_list, /*cgrp=*/NULL, 2145 &evsel_list->metric_events, 2146 &evlist->metric_events); 2147 evlist__delete(evlist); 2148 return ret; 2149} 2150 2151static const char * const stat_record_usage[] = { 2152 "perf stat record [<options>]", 2153 NULL, 2154}; 2155 2156static void init_features(struct perf_session *session) 2157{ 2158 int feat; 2159 2160 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) 2161 perf_header__set_feat(&session->header, feat); 2162 2163 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); 2164 perf_header__clear_feat(&session->header, HEADER_BUILD_ID); 2165 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); 2166 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); 2167 perf_header__clear_feat(&session->header, HEADER_AUXTRACE); 2168} 2169 2170static int __cmd_record(const struct option stat_options[], struct opt_aggr_mode *opt_mode, 2171 int argc, const char **argv) 2172{ 2173 struct perf_session *session; 2174 struct perf_data *data = &perf_stat.data; 2175 2176 argc = parse_options(argc, argv, stat_options, stat_record_usage, 2177 PARSE_OPT_STOP_AT_NON_OPTION); 2178 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(opt_mode); 2179 2180 if (output_name) 2181 data->path = output_name; 2182 2183 if (stat_config.run_count != 1 || forever) { 2184 pr_err("Cannot use -r option with perf stat record.\n"); 2185 return -1; 2186 } 2187 2188 session = perf_session__new(data, NULL); 2189 if (IS_ERR(session)) { 2190 pr_err("Perf session creation failed\n"); 2191 return PTR_ERR(session); 2192 } 2193 2194 init_features(session); 2195 2196 session->evlist = evsel_list; 2197 perf_stat.session = session; 2198 perf_stat.record = true; 2199 return argc; 2200} 2201 2202static int process_stat_round_event(const struct perf_tool *tool __maybe_unused, 2203 struct perf_session *session, 2204 union perf_event *event) 2205{ 2206 struct perf_record_stat_round *stat_round = &event->stat_round; 2207 struct timespec tsh, *ts = NULL; 2208 struct perf_env *env = perf_session__env(session); 2209 const char **argv = env->cmdline_argv; 2210 int argc = env->nr_cmdline; 2211 2212 process_counters(); 2213 2214 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) 2215 update_stats(stat_config.walltime_nsecs_stats, stat_round->time); 2216 2217 if (stat_config.interval && stat_round->time) { 2218 tsh.tv_sec = stat_round->time / NSEC_PER_SEC; 2219 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; 2220 ts = &tsh; 2221 } 2222 2223 print_counters(ts, argc, argv); 2224 return 0; 2225} 2226 2227static 2228int process_stat_config_event(const struct perf_tool *tool, 2229 struct perf_session *session, 2230 union perf_event *event) 2231{ 2232 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2233 2234 perf_event__read_stat_config(&stat_config, &event->stat_config); 2235 2236 if (perf_cpu_map__is_empty(st->cpus)) { 2237 if (st->aggr_mode != AGGR_UNSET) 2238 pr_warning("warning: processing task data, aggregation mode not set\n"); 2239 } else if (st->aggr_mode != AGGR_UNSET) { 2240 stat_config.aggr_mode = st->aggr_mode; 2241 } 2242 2243 if (perf_stat.data.is_pipe) 2244 perf_stat_init_aggr_mode(); 2245 else 2246 perf_stat_init_aggr_mode_file(st); 2247 2248 if (stat_config.aggr_map) { 2249 int nr_aggr = stat_config.aggr_map->nr; 2250 2251 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) { 2252 pr_err("cannot allocate aggr counts\n"); 2253 return -1; 2254 } 2255 } 2256 return 0; 2257} 2258 2259static int set_maps(struct perf_stat *st) 2260{ 2261 if (!st->cpus || !st->threads) 2262 return 0; 2263 2264 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) 2265 return -EINVAL; 2266 2267 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); 2268 2269 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true)) 2270 return -ENOMEM; 2271 2272 st->maps_allocated = true; 2273 return 0; 2274} 2275 2276static 2277int process_thread_map_event(const struct perf_tool *tool, 2278 struct perf_session *session __maybe_unused, 2279 union perf_event *event) 2280{ 2281 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2282 2283 if (st->threads) { 2284 pr_warning("Extra thread map event, ignoring.\n"); 2285 return 0; 2286 } 2287 2288 st->threads = thread_map__new_event(&event->thread_map); 2289 if (!st->threads) 2290 return -ENOMEM; 2291 2292 return set_maps(st); 2293} 2294 2295static 2296int process_cpu_map_event(const struct perf_tool *tool, 2297 struct perf_session *session __maybe_unused, 2298 union perf_event *event) 2299{ 2300 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2301 struct perf_cpu_map *cpus; 2302 2303 if (st->cpus) { 2304 pr_warning("Extra cpu map event, ignoring.\n"); 2305 return 0; 2306 } 2307 2308 cpus = cpu_map__new_data(&event->cpu_map.data); 2309 if (!cpus) 2310 return -ENOMEM; 2311 2312 st->cpus = cpus; 2313 return set_maps(st); 2314} 2315 2316static const char * const stat_report_usage[] = { 2317 "perf stat report [<options>]", 2318 NULL, 2319}; 2320 2321static struct perf_stat perf_stat = { 2322 .aggr_mode = AGGR_UNSET, 2323 .aggr_level = 0, 2324}; 2325 2326static int __cmd_report(int argc, const char **argv) 2327{ 2328 struct perf_session *session; 2329 const struct option options[] = { 2330 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2331 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, 2332 "aggregate counts per processor socket", AGGR_SOCKET), 2333 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, 2334 "aggregate counts per processor die", AGGR_DIE), 2335 OPT_SET_UINT(0, "per-cluster", &perf_stat.aggr_mode, 2336 "aggregate counts perf processor cluster", AGGR_CLUSTER), 2337 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level, 2338 "cache level", 2339 "aggregate count at this cache level (Default: LLC)", 2340 parse_cache_level), 2341 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, 2342 "aggregate counts per physical processor core", AGGR_CORE), 2343 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, 2344 "aggregate counts per numa node", AGGR_NODE), 2345 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, 2346 "disable CPU count aggregation", AGGR_NONE), 2347 OPT_END() 2348 }; 2349 struct stat st; 2350 int ret; 2351 2352 argc = parse_options(argc, argv, options, stat_report_usage, 0); 2353 2354 if (!input_name || !strlen(input_name)) { 2355 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 2356 input_name = "-"; 2357 else 2358 input_name = "perf.data"; 2359 } 2360 2361 perf_stat.data.path = input_name; 2362 perf_stat.data.mode = PERF_DATA_MODE_READ; 2363 2364 perf_tool__init(&perf_stat.tool, /*ordered_events=*/false); 2365 perf_stat.tool.attr = perf_event__process_attr; 2366 perf_stat.tool.event_update = perf_event__process_event_update; 2367 perf_stat.tool.thread_map = process_thread_map_event; 2368 perf_stat.tool.cpu_map = process_cpu_map_event; 2369 perf_stat.tool.stat_config = process_stat_config_event; 2370 perf_stat.tool.stat = perf_event__process_stat_event; 2371 perf_stat.tool.stat_round = process_stat_round_event; 2372 2373 session = perf_session__new(&perf_stat.data, &perf_stat.tool); 2374 if (IS_ERR(session)) 2375 return PTR_ERR(session); 2376 2377 perf_stat.session = session; 2378 stat_config.output = stderr; 2379 evlist__delete(evsel_list); 2380 evsel_list = session->evlist; 2381 2382 ret = perf_session__process_events(session); 2383 if (ret) 2384 return ret; 2385 2386 perf_session__delete(session); 2387 return 0; 2388} 2389 2390static void setup_system_wide(int forks) 2391{ 2392 /* 2393 * Make system wide (-a) the default target if 2394 * no target was specified and one of following 2395 * conditions is met: 2396 * 2397 * - there's no workload specified 2398 * - there is workload specified but all requested 2399 * events are system wide events 2400 */ 2401 if (!target__none(&target)) 2402 return; 2403 2404 if (!forks) 2405 target.system_wide = true; 2406 else { 2407 struct evsel *counter; 2408 2409 evlist__for_each_entry(evsel_list, counter) { 2410 if (!counter->core.requires_cpu && 2411 !evsel__name_is(counter, "duration_time")) { 2412 return; 2413 } 2414 } 2415 2416 if (evsel_list->core.nr_entries) 2417 target.system_wide = true; 2418 } 2419} 2420 2421#ifdef HAVE_ARCH_X86_64_SUPPORT 2422static int parse_tpebs_mode(const struct option *opt, const char *str, 2423 int unset __maybe_unused) 2424{ 2425 enum tpebs_mode *mode = opt->value; 2426 2427 if (!strcasecmp("mean", str)) { 2428 *mode = TPEBS_MODE__MEAN; 2429 return 0; 2430 } 2431 if (!strcasecmp("min", str)) { 2432 *mode = TPEBS_MODE__MIN; 2433 return 0; 2434 } 2435 if (!strcasecmp("max", str)) { 2436 *mode = TPEBS_MODE__MAX; 2437 return 0; 2438 } 2439 if (!strcasecmp("last", str)) { 2440 *mode = TPEBS_MODE__LAST; 2441 return 0; 2442 } 2443 return -1; 2444} 2445#endif // HAVE_ARCH_X86_64_SUPPORT 2446 2447int cmd_stat(int argc, const char **argv) 2448{ 2449 struct opt_aggr_mode opt_mode = {}; 2450 struct option stat_options[] = { 2451 OPT_BOOLEAN('T', "transaction", &transaction_run, 2452 "hardware transaction statistics"), 2453 OPT_CALLBACK('e', "event", &parse_events_option_args, "event", 2454 "event selector. use 'perf list' to list available events", 2455 parse_events_option), 2456 OPT_CALLBACK(0, "filter", &evsel_list, "filter", 2457 "event filter", parse_filter), 2458 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, 2459 "child tasks do not inherit counters"), 2460 OPT_STRING('p', "pid", &target.pid, "pid", 2461 "stat events on existing process id"), 2462 OPT_STRING('t', "tid", &target.tid, "tid", 2463 "stat events on existing thread id"), 2464#ifdef HAVE_BPF_SKEL 2465 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", 2466 "stat events on existing bpf program id"), 2467 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, 2468 "use bpf program to count events"), 2469 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", 2470 "path to perf_event_attr map"), 2471#endif 2472 OPT_BOOLEAN('a', "all-cpus", &target.system_wide, 2473 "system-wide collection from all CPUs"), 2474 OPT_BOOLEAN(0, "scale", &stat_config.scale, 2475 "Use --no-scale to disable counter scaling for multiplexing"), 2476 OPT_INCR('v', "verbose", &verbose, 2477 "be more verbose (show counter open errors, etc)"), 2478 OPT_INTEGER('r', "repeat", &stat_config.run_count, 2479 "repeat command and print average + stddev (max: 100, forever: 0)"), 2480 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, 2481 "display details about each run (only with -r option)"), 2482 OPT_BOOLEAN('n', "null", &stat_config.null_run, 2483 "null run - dont start any counters"), 2484 OPT_INCR('d', "detailed", &detailed_run, 2485 "detailed run - start a lot of events"), 2486 OPT_BOOLEAN('S', "sync", &sync_run, 2487 "call sync() before starting a run"), 2488 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, 2489 "print large numbers with thousands\' separators", 2490 stat__set_big_num), 2491 OPT_STRING('C', "cpu", &target.cpu_list, "cpu", 2492 "list of cpus to monitor in system-wide"), 2493 OPT_BOOLEAN('A', "no-aggr", &opt_mode.no_aggr, 2494 "disable aggregation across CPUs or PMUs"), 2495 OPT_BOOLEAN(0, "no-merge", &opt_mode.no_aggr, 2496 "disable aggregation the same as -A or -no-aggr"), 2497 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge, 2498 "Merge identical named hybrid events"), 2499 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", 2500 "print counts with custom separator"), 2501 OPT_BOOLEAN('j', "json-output", &stat_config.json_output, 2502 "print counts in JSON format"), 2503 OPT_CALLBACK('G', "cgroup", &evsel_list, "name", 2504 "monitor event in cgroup name only", parse_stat_cgroups), 2505 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", 2506 "expand events for each cgroup"), 2507 OPT_STRING('o', "output", &output_name, "file", "output file name"), 2508 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), 2509 OPT_INTEGER(0, "log-fd", &output_fd, 2510 "log output to fd, instead of stderr"), 2511 OPT_STRING(0, "pre", &pre_cmd, "command", 2512 "command to run prior to the measured command"), 2513 OPT_STRING(0, "post", &post_cmd, "command", 2514 "command to run after to the measured command"), 2515 OPT_UINTEGER('I', "interval-print", &stat_config.interval, 2516 "print counts at regular interval in ms " 2517 "(overhead is possible for values <= 100ms)"), 2518 OPT_INTEGER(0, "interval-count", &stat_config.times, 2519 "print counts for fixed number of times"), 2520 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, 2521 "clear screen in between new interval"), 2522 OPT_UINTEGER(0, "timeout", &stat_config.timeout, 2523 "stop workload and print counts after a timeout period in ms (>= 10ms)"), 2524 OPT_BOOLEAN(0, "per-socket", &opt_mode.socket, 2525 "aggregate counts per processor socket"), 2526 OPT_BOOLEAN(0, "per-die", &opt_mode.die, "aggregate counts per processor die"), 2527 OPT_BOOLEAN(0, "per-cluster", &opt_mode.cluster, 2528 "aggregate counts per processor cluster"), 2529 OPT_CALLBACK_OPTARG(0, "per-cache", &opt_mode, &stat_config.aggr_level, 2530 "cache level", "aggregate count at this cache level (Default: LLC)", 2531 parse_cache_level), 2532 OPT_BOOLEAN(0, "per-core", &opt_mode.core, 2533 "aggregate counts per physical processor core"), 2534 OPT_BOOLEAN(0, "per-thread", &opt_mode.thread, "aggregate counts per thread"), 2535 OPT_BOOLEAN(0, "per-node", &opt_mode.node, "aggregate counts per numa node"), 2536 OPT_INTEGER('D', "delay", &target.initial_delay, 2537 "ms to wait before starting measurement after program start (-1: start with events disabled)"), 2538 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, 2539 "Only print computed metrics. No raw values", enable_metric_only), 2540 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, 2541 "don't group metric events, impacts multiplexing"), 2542 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, 2543 "don't try to share events between metrics in a group"), 2544 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold, 2545 "disable adding events for the metric threshold calculation"), 2546 OPT_BOOLEAN(0, "topdown", &topdown_run, 2547 "measure top-down statistics"), 2548#ifdef HAVE_ARCH_X86_64_SUPPORT 2549 OPT_BOOLEAN(0, "record-tpebs", &tpebs_recording, 2550 "enable recording for tpebs when retire_latency required"), 2551 OPT_CALLBACK(0, "tpebs-mode", &tpebs_mode, "tpebs-mode", 2552 "Mode of TPEBS recording: mean, min or max", 2553 parse_tpebs_mode), 2554#endif 2555 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, 2556 "Set the metrics level for the top-down statistics (0: max level)"), 2557 OPT_BOOLEAN(0, "smi-cost", &smi_cost, 2558 "measure SMI cost"), 2559 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", 2560 "monitor specified metrics or metric groups (separated by ,)", 2561 append_metric_groups), 2562 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, 2563 "Configure all used events to run in kernel space.", 2564 PARSE_OPT_EXCLUSIVE), 2565 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, 2566 "Configure all used events to run in user space.", 2567 PARSE_OPT_EXCLUSIVE), 2568 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, 2569 "Use with 'percore' event qualifier to show the event " 2570 "counts of one hardware thread by sum up total hardware " 2571 "threads of same physical core"), 2572 OPT_BOOLEAN(0, "summary", &stat_config.summary, 2573 "print summary for interval mode"), 2574 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, 2575 "don't print 'summary' for CSV summary output"), 2576 OPT_BOOLEAN(0, "quiet", &quiet, 2577 "don't print any output, messages or warnings (useful with record)"), 2578 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", 2579 "Only enable events on applying cpu with this type " 2580 "for hybrid platform (e.g. core or atom)", 2581 parse_cputype), 2582#ifdef HAVE_LIBPFM 2583 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", 2584 "libpfm4 event selector. use 'perf list' to list available events", 2585 parse_libpfm_events_option), 2586#endif 2587 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", 2588 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" 2589 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" 2590 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", 2591 parse_control_option), 2592 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", 2593 "measure I/O performance metrics provided by arch/platform", 2594 iostat_parse), 2595 OPT_END() 2596 }; 2597 const char * const stat_usage[] = { 2598 "perf stat [<options>] [<command>]", 2599 NULL 2600 }; 2601 int status = -EINVAL, run_idx, err; 2602 const char *mode; 2603 FILE *output = stderr; 2604 unsigned int interval, timeout; 2605 const char * const stat_subcommands[] = { "record", "report" }; 2606 char errbuf[BUFSIZ]; 2607 struct evsel *counter; 2608 2609 setlocale(LC_ALL, ""); 2610 2611 evsel_list = evlist__new(); 2612 if (evsel_list == NULL) 2613 return -ENOMEM; 2614 2615 parse_events__shrink_config_terms(); 2616 2617 /* String-parsing callback-based options would segfault when negated */ 2618 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); 2619 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); 2620 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); 2621 2622 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, 2623 (const char **) stat_usage, 2624 PARSE_OPT_STOP_AT_NON_OPTION); 2625 2626 stat_config.aggr_mode = opt_aggr_mode_to_aggr_mode(&opt_mode); 2627 2628 if (stat_config.csv_sep) { 2629 stat_config.csv_output = true; 2630 if (!strcmp(stat_config.csv_sep, "\\t")) 2631 stat_config.csv_sep = "\t"; 2632 } else 2633 stat_config.csv_sep = DEFAULT_SEPARATOR; 2634 2635 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { 2636 argc = __cmd_record(stat_options, &opt_mode, argc, argv); 2637 if (argc < 0) 2638 return -1; 2639 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2640 return __cmd_report(argc, argv); 2641 2642 interval = stat_config.interval; 2643 timeout = stat_config.timeout; 2644 2645 /* 2646 * For record command the -o is already taken care of. 2647 */ 2648 if (!STAT_RECORD && output_name && strcmp(output_name, "-")) 2649 output = NULL; 2650 2651 if (output_name && output_fd) { 2652 fprintf(stderr, "cannot use both --output and --log-fd\n"); 2653 parse_options_usage(stat_usage, stat_options, "o", 1); 2654 parse_options_usage(NULL, stat_options, "log-fd", 0); 2655 goto out; 2656 } 2657 2658 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { 2659 fprintf(stderr, "--metric-only is not supported with --per-thread\n"); 2660 goto out; 2661 } 2662 2663 if (stat_config.metric_only && stat_config.run_count > 1) { 2664 fprintf(stderr, "--metric-only is not supported with -r\n"); 2665 goto out; 2666 } 2667 2668 if (stat_config.csv_output || (stat_config.metric_only && stat_config.json_output)) { 2669 /* 2670 * Current CSV and metric-only JSON output doesn't display the 2671 * metric threshold so don't compute it. 2672 */ 2673 stat_config.metric_no_threshold = true; 2674 } 2675 2676 if (stat_config.walltime_run_table && stat_config.run_count <= 1) { 2677 fprintf(stderr, "--table is only supported with -r\n"); 2678 parse_options_usage(stat_usage, stat_options, "r", 1); 2679 parse_options_usage(NULL, stat_options, "table", 0); 2680 goto out; 2681 } 2682 2683 if (output_fd < 0) { 2684 fprintf(stderr, "argument to --log-fd must be a > 0\n"); 2685 parse_options_usage(stat_usage, stat_options, "log-fd", 0); 2686 goto out; 2687 } 2688 2689 if (!output && !quiet) { 2690 struct timespec tm; 2691 mode = append_file ? "a" : "w"; 2692 2693 output = fopen(output_name, mode); 2694 if (!output) { 2695 perror("failed to create output file"); 2696 return -1; 2697 } 2698 if (!stat_config.json_output) { 2699 clock_gettime(CLOCK_REALTIME, &tm); 2700 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); 2701 } 2702 } else if (output_fd > 0) { 2703 mode = append_file ? "a" : "w"; 2704 output = fdopen(output_fd, mode); 2705 if (!output) { 2706 perror("Failed opening logfd"); 2707 return -errno; 2708 } 2709 } 2710 2711 if (stat_config.interval_clear && !isatty(fileno(output))) { 2712 fprintf(stderr, "--interval-clear does not work with output\n"); 2713 parse_options_usage(stat_usage, stat_options, "o", 1); 2714 parse_options_usage(NULL, stat_options, "log-fd", 0); 2715 parse_options_usage(NULL, stat_options, "interval-clear", 0); 2716 return -1; 2717 } 2718 2719 stat_config.output = output; 2720 2721 /* 2722 * let the spreadsheet do the pretty-printing 2723 */ 2724 if (stat_config.csv_output) { 2725 /* User explicitly passed -B? */ 2726 if (big_num_opt == 1) { 2727 fprintf(stderr, "-B option not supported with -x\n"); 2728 parse_options_usage(stat_usage, stat_options, "B", 1); 2729 parse_options_usage(NULL, stat_options, "x", 1); 2730 goto out; 2731 } else /* Nope, so disable big number formatting */ 2732 stat_config.big_num = false; 2733 } else if (big_num_opt == 0) /* User passed --no-big-num */ 2734 stat_config.big_num = false; 2735 2736 target.inherit = !stat_config.no_inherit; 2737 err = target__validate(&target); 2738 if (err) { 2739 target__strerror(&target, err, errbuf, BUFSIZ); 2740 pr_warning("%s\n", errbuf); 2741 } 2742 2743 setup_system_wide(argc); 2744 2745 /* 2746 * Display user/system times only for single 2747 * run and when there's specified tracee. 2748 */ 2749 if ((stat_config.run_count == 1) && target__none(&target)) 2750 stat_config.ru_display = true; 2751 2752 if (stat_config.run_count < 0) { 2753 pr_err("Run count must be a positive number\n"); 2754 parse_options_usage(stat_usage, stat_options, "r", 1); 2755 goto out; 2756 } else if (stat_config.run_count == 0) { 2757 forever = true; 2758 stat_config.run_count = 1; 2759 } 2760 2761 if (stat_config.walltime_run_table) { 2762 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); 2763 if (!stat_config.walltime_run) { 2764 pr_err("failed to setup -r option"); 2765 goto out; 2766 } 2767 } 2768 2769 if ((stat_config.aggr_mode == AGGR_THREAD) && 2770 !target__has_task(&target)) { 2771 if (!target.system_wide || target.cpu_list) { 2772 fprintf(stderr, "The --per-thread option is only " 2773 "available when monitoring via -p -t -a " 2774 "options or only --per-thread.\n"); 2775 parse_options_usage(NULL, stat_options, "p", 1); 2776 parse_options_usage(NULL, stat_options, "t", 1); 2777 goto out; 2778 } 2779 } 2780 2781 /* 2782 * no_aggr, cgroup are for system-wide only 2783 * --per-thread is aggregated per thread, we dont mix it with cpu mode 2784 */ 2785 if (((stat_config.aggr_mode != AGGR_GLOBAL && 2786 stat_config.aggr_mode != AGGR_THREAD) || 2787 (nr_cgroups || stat_config.cgroup_list)) && 2788 !target__has_cpu(&target)) { 2789 fprintf(stderr, "both cgroup and no-aggregation " 2790 "modes only available in system-wide mode\n"); 2791 2792 parse_options_usage(stat_usage, stat_options, "G", 1); 2793 parse_options_usage(NULL, stat_options, "A", 1); 2794 parse_options_usage(NULL, stat_options, "a", 1); 2795 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2796 goto out; 2797 } 2798 2799 if (stat_config.iostat_run) { 2800 status = iostat_prepare(evsel_list, &stat_config); 2801 if (status) 2802 goto out; 2803 if (iostat_mode == IOSTAT_LIST) { 2804 iostat_list(evsel_list, &stat_config); 2805 goto out; 2806 } else if (verbose > 0) 2807 iostat_list(evsel_list, &stat_config); 2808 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) 2809 target.system_wide = true; 2810 } 2811 2812 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) 2813 target.per_thread = true; 2814 2815 stat_config.system_wide = target.system_wide; 2816 if (target.cpu_list) { 2817 stat_config.user_requested_cpu_list = strdup(target.cpu_list); 2818 if (!stat_config.user_requested_cpu_list) { 2819 status = -ENOMEM; 2820 goto out; 2821 } 2822 } 2823 2824 /* 2825 * Metric parsing needs to be delayed as metrics may optimize events 2826 * knowing the target is system-wide. 2827 */ 2828 if (metrics) { 2829 const char *pmu = parse_events_option_args.pmu_filter ?: "all"; 2830 int ret = metricgroup__parse_groups(evsel_list, pmu, metrics, 2831 stat_config.metric_no_group, 2832 stat_config.metric_no_merge, 2833 stat_config.metric_no_threshold, 2834 stat_config.user_requested_cpu_list, 2835 stat_config.system_wide, 2836 stat_config.hardware_aware_grouping); 2837 2838 zfree(&metrics); 2839 if (ret) { 2840 status = ret; 2841 goto out; 2842 } 2843 } 2844 2845 if (add_default_events()) 2846 goto out; 2847 2848 if (stat_config.cgroup_list) { 2849 if (nr_cgroups > 0) { 2850 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 2851 parse_options_usage(stat_usage, stat_options, "G", 1); 2852 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2853 goto out; 2854 } 2855 2856 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, true) < 0) { 2857 parse_options_usage(stat_usage, stat_options, 2858 "for-each-cgroup", 0); 2859 goto out; 2860 } 2861 } 2862#ifdef HAVE_BPF_SKEL 2863 if (target.use_bpf && nr_cgroups && 2864 (evsel_list->core.nr_entries / nr_cgroups) > BPERF_CGROUP__MAX_EVENTS) { 2865 pr_warning("Disabling BPF counters due to more events (%d) than the max (%d)\n", 2866 evsel_list->core.nr_entries / nr_cgroups, BPERF_CGROUP__MAX_EVENTS); 2867 target.use_bpf = false; 2868 } 2869#endif // HAVE_BPF_SKEL 2870 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list); 2871 2872 evlist__for_each_entry(evsel_list, counter) { 2873 /* 2874 * Setup BPF counters to require CPUs as any(-1) isn't 2875 * supported. evlist__create_maps below will propagate this 2876 * information to the evsels. Note, evsel__is_bperf isn't yet 2877 * set up, and this change must happen early, so directly use 2878 * the bpf_counter variable and target information. 2879 */ 2880 if ((counter->bpf_counter || target.use_bpf) && !target__has_cpu(&target)) 2881 counter->core.requires_cpu = true; 2882 } 2883 2884 if (evlist__create_maps(evsel_list, &target) < 0) { 2885 if (target__has_task(&target)) { 2886 pr_err("Problems finding threads of monitor\n"); 2887 parse_options_usage(stat_usage, stat_options, "p", 1); 2888 parse_options_usage(NULL, stat_options, "t", 1); 2889 } else if (target__has_cpu(&target)) { 2890 perror("failed to parse CPUs map"); 2891 parse_options_usage(stat_usage, stat_options, "C", 1); 2892 parse_options_usage(NULL, stat_options, "a", 1); 2893 } 2894 goto out; 2895 } 2896 2897 evlist__check_cpu_maps(evsel_list); 2898 2899 /* 2900 * Initialize thread_map with comm names, 2901 * so we could print it out on output. 2902 */ 2903 if (stat_config.aggr_mode == AGGR_THREAD) { 2904 thread_map__read_comms(evsel_list->core.threads); 2905 } 2906 2907 if (stat_config.aggr_mode == AGGR_NODE) 2908 cpu__setup_cpunode_map(); 2909 2910 if (stat_config.times && interval) 2911 interval_count = true; 2912 else if (stat_config.times && !interval) { 2913 pr_err("interval-count option should be used together with " 2914 "interval-print.\n"); 2915 parse_options_usage(stat_usage, stat_options, "interval-count", 0); 2916 parse_options_usage(stat_usage, stat_options, "I", 1); 2917 goto out; 2918 } 2919 2920 if (timeout && timeout < 100) { 2921 if (timeout < 10) { 2922 pr_err("timeout must be >= 10ms.\n"); 2923 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2924 goto out; 2925 } else 2926 pr_warning("timeout < 100ms. " 2927 "The overhead percentage could be high in some cases. " 2928 "Please proceed with caution.\n"); 2929 } 2930 if (timeout && interval) { 2931 pr_err("timeout option is not supported with interval-print.\n"); 2932 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2933 parse_options_usage(stat_usage, stat_options, "I", 1); 2934 goto out; 2935 } 2936 2937 if (perf_stat_init_aggr_mode()) 2938 goto out; 2939 2940 if (evlist__alloc_stats(&stat_config, evsel_list, interval)) 2941 goto out; 2942 2943 /* 2944 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless 2945 * while avoiding that older tools show confusing messages. 2946 * 2947 * However for pipe sessions we need to keep it zero, 2948 * because script's perf_evsel__check_attr is triggered 2949 * by attr->sample_type != 0, and we can't run it on 2950 * stat sessions. 2951 */ 2952 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); 2953 2954 /* 2955 * We dont want to block the signals - that would cause 2956 * child tasks to inherit that and Ctrl-C would not work. 2957 * What we want is for Ctrl-C to work in the exec()-ed 2958 * task, but being ignored by perf stat itself: 2959 */ 2960 atexit(sig_atexit); 2961 if (!forever) 2962 signal(SIGINT, skip_signal); 2963 signal(SIGCHLD, skip_signal); 2964 signal(SIGALRM, skip_signal); 2965 signal(SIGABRT, skip_signal); 2966 2967 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) 2968 goto out; 2969 2970 /* Enable ignoring missing threads when -p option is defined. */ 2971 evlist__first(evsel_list)->ignore_missing_thread = target.pid; 2972 status = 0; 2973 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { 2974 if (stat_config.run_count != 1 && verbose > 0) 2975 fprintf(output, "[ perf stat: executing run #%d ... ]\n", 2976 run_idx + 1); 2977 2978 if (run_idx != 0) 2979 evlist__reset_prev_raw_counts(evsel_list); 2980 2981 status = run_perf_stat(argc, argv, run_idx); 2982 if (status < 0) 2983 break; 2984 2985 if (forever && !interval) { 2986 print_counters(NULL, argc, argv); 2987 perf_stat__reset_stats(); 2988 } 2989 } 2990 2991 if (!forever && status != -1 && (!interval || stat_config.summary)) { 2992 if (stat_config.run_count > 1) 2993 evlist__copy_res_stats(&stat_config, evsel_list); 2994 print_counters(NULL, argc, argv); 2995 } 2996 2997 evlist__finalize_ctlfd(evsel_list); 2998 2999 if (STAT_RECORD) { 3000 /* 3001 * We synthesize the kernel mmap record just so that older tools 3002 * don't emit warnings about not being able to resolve symbols 3003 * due to /proc/sys/kernel/kptr_restrict settings and instead provide 3004 * a saner message about no samples being in the perf.data file. 3005 * 3006 * This also serves to suppress a warning about f_header.data.size == 0 3007 * in header.c at the moment 'perf stat record' gets introduced, which 3008 * is not really needed once we start adding the stat specific PERF_RECORD_ 3009 * records, but the need to suppress the kptr_restrict messages in older 3010 * tools remain -acme 3011 */ 3012 int fd = perf_data__fd(&perf_stat.data); 3013 3014 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, 3015 process_synthesized_event, 3016 &perf_stat.session->machines.host); 3017 if (err) { 3018 pr_warning("Couldn't synthesize the kernel mmap record, harmless, " 3019 "older tools may produce warnings about this file\n."); 3020 } 3021 3022 if (!interval) { 3023 if (WRITE_STAT_ROUND_EVENT(stat_config.walltime_nsecs_stats->max, FINAL)) 3024 pr_err("failed to write stat round event\n"); 3025 } 3026 3027 if (!perf_stat.data.is_pipe) { 3028 perf_stat.session->header.data_size += perf_stat.bytes_written; 3029 perf_session__write_header(perf_stat.session, evsel_list, fd, true); 3030 } 3031 3032 evlist__close(evsel_list); 3033 perf_session__delete(perf_stat.session); 3034 } 3035 3036 perf_stat__exit_aggr_mode(); 3037 evlist__free_stats(evsel_list); 3038out: 3039 if (stat_config.iostat_run) 3040 iostat_release(evsel_list); 3041 3042 zfree(&stat_config.walltime_run); 3043 zfree(&stat_config.user_requested_cpu_list); 3044 3045 if (smi_cost && smi_reset) 3046 sysfs__write_int(FREEZE_ON_SMI_PATH, 0); 3047 3048 evlist__delete(evsel_list); 3049 3050 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); 3051 3052 /* Only the low byte of status becomes the exit code. */ 3053 return abs(status); 3054}
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