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 "perf.h" 45 #include "util/cgroup.h" 46 #include <subcmd/parse-options.h> 47 #include "util/parse-events.h" 48 #include "util/pmu.h" 49 #include "util/event.h" 50 #include "util/evlist.h" 51 #include "util/evlist-hybrid.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/pmu-hybrid.h" 74 #include "util/topdown.h" 75 #include "asm/bug.h" 76 77 #include <linux/time64.h> 78 #include <linux/zalloc.h> 79 #include <api/fs/fs.h> 80 #include <errno.h> 81 #include <signal.h> 82 #include <stdlib.h> 83 #include <sys/prctl.h> 84 #include <inttypes.h> 85 #include <locale.h> 86 #include <math.h> 87 #include <sys/types.h> 88 #include <sys/stat.h> 89 #include <sys/wait.h> 90 #include <unistd.h> 91 #include <sys/time.h> 92 #include <sys/resource.h> 93 #include <linux/err.h> 94 95 #include <linux/ctype.h> 96 #include <perf/evlist.h> 97 98 #define DEFAULT_SEPARATOR " " 99 #define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi" 100 101 static void print_counters(struct timespec *ts, int argc, const char **argv); 102 103 /* Default events used for perf stat -T */ 104 static const char *transaction_attrs = { 105 "task-clock," 106 "{" 107 "instructions," 108 "cycles," 109 "cpu/cycles-t/," 110 "cpu/tx-start/," 111 "cpu/el-start/," 112 "cpu/cycles-ct/" 113 "}" 114 }; 115 116 /* More limited version when the CPU does not have all events. */ 117 static const char * transaction_limited_attrs = { 118 "task-clock," 119 "{" 120 "instructions," 121 "cycles," 122 "cpu/cycles-t/," 123 "cpu/tx-start/" 124 "}" 125 }; 126 127 static const char * topdown_attrs[] = { 128 "topdown-total-slots", 129 "topdown-slots-retired", 130 "topdown-recovery-bubbles", 131 "topdown-fetch-bubbles", 132 "topdown-slots-issued", 133 NULL, 134 }; 135 136 static const char *topdown_metric_attrs[] = { 137 "slots", 138 "topdown-retiring", 139 "topdown-bad-spec", 140 "topdown-fe-bound", 141 "topdown-be-bound", 142 NULL, 143 }; 144 145 static const char *topdown_metric_L2_attrs[] = { 146 "slots", 147 "topdown-retiring", 148 "topdown-bad-spec", 149 "topdown-fe-bound", 150 "topdown-be-bound", 151 "topdown-heavy-ops", 152 "topdown-br-mispredict", 153 "topdown-fetch-lat", 154 "topdown-mem-bound", 155 NULL, 156 }; 157 158 #define TOPDOWN_MAX_LEVEL 2 159 160 static const char *smi_cost_attrs = { 161 "{" 162 "msr/aperf/," 163 "msr/smi/," 164 "cycles" 165 "}" 166 }; 167 168 static struct evlist *evsel_list; 169 static bool all_counters_use_bpf = true; 170 171 static struct target target = { 172 .uid = UINT_MAX, 173 }; 174 175 #define METRIC_ONLY_LEN 20 176 177 static volatile pid_t child_pid = -1; 178 static int detailed_run = 0; 179 static bool transaction_run; 180 static bool topdown_run = false; 181 static bool smi_cost = false; 182 static bool smi_reset = false; 183 static int big_num_opt = -1; 184 static bool group = false; 185 static const char *pre_cmd = NULL; 186 static const char *post_cmd = NULL; 187 static bool sync_run = false; 188 static bool forever = false; 189 static bool force_metric_only = false; 190 static struct timespec ref_time; 191 static bool append_file; 192 static bool interval_count; 193 static const char *output_name; 194 static int output_fd; 195 196 struct perf_stat { 197 bool record; 198 struct perf_data data; 199 struct perf_session *session; 200 u64 bytes_written; 201 struct perf_tool tool; 202 bool maps_allocated; 203 struct perf_cpu_map *cpus; 204 struct perf_thread_map *threads; 205 enum aggr_mode aggr_mode; 206 }; 207 208 static struct perf_stat perf_stat; 209 #define STAT_RECORD perf_stat.record 210 211 static volatile int done = 0; 212 213 static struct perf_stat_config stat_config = { 214 .aggr_mode = AGGR_GLOBAL, 215 .scale = true, 216 .unit_width = 4, /* strlen("unit") */ 217 .run_count = 1, 218 .metric_only_len = METRIC_ONLY_LEN, 219 .walltime_nsecs_stats = &walltime_nsecs_stats, 220 .ru_stats = &ru_stats, 221 .big_num = true, 222 .ctl_fd = -1, 223 .ctl_fd_ack = -1, 224 .iostat_run = false, 225 }; 226 227 static bool cpus_map_matched(struct evsel *a, struct evsel *b) 228 { 229 if (!a->core.cpus && !b->core.cpus) 230 return true; 231 232 if (!a->core.cpus || !b->core.cpus) 233 return false; 234 235 if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus)) 236 return false; 237 238 for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) { 239 if (perf_cpu_map__cpu(a->core.cpus, i).cpu != 240 perf_cpu_map__cpu(b->core.cpus, i).cpu) 241 return false; 242 } 243 244 return true; 245 } 246 247 static void evlist__check_cpu_maps(struct evlist *evlist) 248 { 249 struct evsel *evsel, *pos, *leader; 250 char buf[1024]; 251 252 if (evlist__has_hybrid(evlist)) 253 evlist__warn_hybrid_group(evlist); 254 255 evlist__for_each_entry(evlist, evsel) { 256 leader = evsel__leader(evsel); 257 258 /* Check that leader matches cpus with each member. */ 259 if (leader == evsel) 260 continue; 261 if (cpus_map_matched(leader, evsel)) 262 continue; 263 264 /* If there's mismatch disable the group and warn user. */ 265 WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n"); 266 evsel__group_desc(leader, buf, sizeof(buf)); 267 pr_warning(" %s\n", buf); 268 269 if (verbose) { 270 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf)); 271 pr_warning(" %s: %s\n", leader->name, buf); 272 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf)); 273 pr_warning(" %s: %s\n", evsel->name, buf); 274 } 275 276 for_each_group_evsel(pos, leader) 277 evsel__remove_from_group(pos, leader); 278 } 279 } 280 281 static inline void diff_timespec(struct timespec *r, struct timespec *a, 282 struct timespec *b) 283 { 284 r->tv_sec = a->tv_sec - b->tv_sec; 285 if (a->tv_nsec < b->tv_nsec) { 286 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; 287 r->tv_sec--; 288 } else { 289 r->tv_nsec = a->tv_nsec - b->tv_nsec ; 290 } 291 } 292 293 static void perf_stat__reset_stats(void) 294 { 295 int i; 296 297 evlist__reset_stats(evsel_list); 298 perf_stat__reset_shadow_stats(); 299 300 for (i = 0; i < stat_config.stats_num; i++) 301 perf_stat__reset_shadow_per_stat(&stat_config.stats[i]); 302 } 303 304 static int process_synthesized_event(struct perf_tool *tool __maybe_unused, 305 union perf_event *event, 306 struct perf_sample *sample __maybe_unused, 307 struct machine *machine __maybe_unused) 308 { 309 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { 310 pr_err("failed to write perf data, error: %m\n"); 311 return -1; 312 } 313 314 perf_stat.bytes_written += event->header.size; 315 return 0; 316 } 317 318 static int write_stat_round_event(u64 tm, u64 type) 319 { 320 return perf_event__synthesize_stat_round(NULL, tm, type, 321 process_synthesized_event, 322 NULL); 323 } 324 325 #define WRITE_STAT_ROUND_EVENT(time, interval) \ 326 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) 327 328 #define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) 329 330 static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread, 331 struct perf_counts_values *count) 332 { 333 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread); 334 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx); 335 336 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, 337 process_synthesized_event, NULL); 338 } 339 340 static int read_single_counter(struct evsel *counter, int cpu_map_idx, 341 int thread, struct timespec *rs) 342 { 343 switch(counter->tool_event) { 344 case PERF_TOOL_DURATION_TIME: { 345 u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL; 346 struct perf_counts_values *count = 347 perf_counts(counter->counts, cpu_map_idx, thread); 348 count->ena = count->run = val; 349 count->val = val; 350 return 0; 351 } 352 case PERF_TOOL_USER_TIME: 353 case PERF_TOOL_SYSTEM_TIME: { 354 u64 val; 355 struct perf_counts_values *count = 356 perf_counts(counter->counts, cpu_map_idx, thread); 357 if (counter->tool_event == PERF_TOOL_USER_TIME) 358 val = ru_stats.ru_utime_usec_stat.mean; 359 else 360 val = ru_stats.ru_stime_usec_stat.mean; 361 count->ena = count->run = val; 362 count->val = val; 363 return 0; 364 } 365 default: 366 case PERF_TOOL_NONE: 367 return evsel__read_counter(counter, cpu_map_idx, thread); 368 case PERF_TOOL_MAX: 369 /* This should never be reached */ 370 return 0; 371 } 372 } 373 374 /* 375 * Read out the results of a single counter: 376 * do not aggregate counts across CPUs in system-wide mode 377 */ 378 static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx) 379 { 380 int nthreads = perf_thread_map__nr(evsel_list->core.threads); 381 int thread; 382 383 if (!counter->supported) 384 return -ENOENT; 385 386 for (thread = 0; thread < nthreads; thread++) { 387 struct perf_counts_values *count; 388 389 count = perf_counts(counter->counts, cpu_map_idx, thread); 390 391 /* 392 * The leader's group read loads data into its group members 393 * (via evsel__read_counter()) and sets their count->loaded. 394 */ 395 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) && 396 read_single_counter(counter, cpu_map_idx, thread, rs)) { 397 counter->counts->scaled = -1; 398 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0; 399 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0; 400 return -1; 401 } 402 403 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false); 404 405 if (STAT_RECORD) { 406 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) { 407 pr_err("failed to write stat event\n"); 408 return -1; 409 } 410 } 411 412 if (verbose > 1) { 413 fprintf(stat_config.output, 414 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", 415 evsel__name(counter), 416 perf_cpu_map__cpu(evsel__cpus(counter), 417 cpu_map_idx).cpu, 418 count->val, count->ena, count->run); 419 } 420 } 421 422 return 0; 423 } 424 425 static int read_affinity_counters(struct timespec *rs) 426 { 427 struct evlist_cpu_iterator evlist_cpu_itr; 428 struct affinity saved_affinity, *affinity; 429 430 if (all_counters_use_bpf) 431 return 0; 432 433 if (!target__has_cpu(&target) || target__has_per_thread(&target)) 434 affinity = NULL; 435 else if (affinity__setup(&saved_affinity) < 0) 436 return -1; 437 else 438 affinity = &saved_affinity; 439 440 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 441 struct evsel *counter = evlist_cpu_itr.evsel; 442 443 if (evsel__is_bpf(counter)) 444 continue; 445 446 if (!counter->err) { 447 counter->err = read_counter_cpu(counter, rs, 448 evlist_cpu_itr.cpu_map_idx); 449 } 450 } 451 if (affinity) 452 affinity__cleanup(&saved_affinity); 453 454 return 0; 455 } 456 457 static int read_bpf_map_counters(void) 458 { 459 struct evsel *counter; 460 int err; 461 462 evlist__for_each_entry(evsel_list, counter) { 463 if (!evsel__is_bpf(counter)) 464 continue; 465 466 err = bpf_counter__read(counter); 467 if (err) 468 return err; 469 } 470 return 0; 471 } 472 473 static void read_counters(struct timespec *rs) 474 { 475 struct evsel *counter; 476 477 if (!stat_config.stop_read_counter) { 478 if (read_bpf_map_counters() || 479 read_affinity_counters(rs)) 480 return; 481 } 482 483 evlist__for_each_entry(evsel_list, counter) { 484 if (counter->err) 485 pr_debug("failed to read counter %s\n", counter->name); 486 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter)) 487 pr_warning("failed to process counter %s\n", counter->name); 488 counter->err = 0; 489 } 490 } 491 492 static int runtime_stat_new(struct perf_stat_config *config, int nthreads) 493 { 494 int i; 495 496 config->stats = calloc(nthreads, sizeof(struct runtime_stat)); 497 if (!config->stats) 498 return -1; 499 500 config->stats_num = nthreads; 501 502 for (i = 0; i < nthreads; i++) 503 runtime_stat__init(&config->stats[i]); 504 505 return 0; 506 } 507 508 static void runtime_stat_delete(struct perf_stat_config *config) 509 { 510 int i; 511 512 if (!config->stats) 513 return; 514 515 for (i = 0; i < config->stats_num; i++) 516 runtime_stat__exit(&config->stats[i]); 517 518 zfree(&config->stats); 519 } 520 521 static void runtime_stat_reset(struct perf_stat_config *config) 522 { 523 int i; 524 525 if (!config->stats) 526 return; 527 528 for (i = 0; i < config->stats_num; i++) 529 perf_stat__reset_shadow_per_stat(&config->stats[i]); 530 } 531 532 static void process_interval(void) 533 { 534 struct timespec ts, rs; 535 536 clock_gettime(CLOCK_MONOTONIC, &ts); 537 diff_timespec(&rs, &ts, &ref_time); 538 539 perf_stat__reset_shadow_per_stat(&rt_stat); 540 runtime_stat_reset(&stat_config); 541 read_counters(&rs); 542 543 if (STAT_RECORD) { 544 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) 545 pr_err("failed to write stat round event\n"); 546 } 547 548 init_stats(&walltime_nsecs_stats); 549 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL); 550 print_counters(&rs, 0, NULL); 551 } 552 553 static bool handle_interval(unsigned int interval, int *times) 554 { 555 if (interval) { 556 process_interval(); 557 if (interval_count && !(--(*times))) 558 return true; 559 } 560 return false; 561 } 562 563 static int enable_counters(void) 564 { 565 struct evsel *evsel; 566 int err; 567 568 evlist__for_each_entry(evsel_list, evsel) { 569 if (!evsel__is_bpf(evsel)) 570 continue; 571 572 err = bpf_counter__enable(evsel); 573 if (err) 574 return err; 575 } 576 577 if (stat_config.initial_delay < 0) { 578 pr_info(EVLIST_DISABLED_MSG); 579 return 0; 580 } 581 582 if (stat_config.initial_delay > 0) { 583 pr_info(EVLIST_DISABLED_MSG); 584 usleep(stat_config.initial_delay * USEC_PER_MSEC); 585 } 586 587 /* 588 * We need to enable counters only if: 589 * - we don't have tracee (attaching to task or cpu) 590 * - we have initial delay configured 591 */ 592 if (!target__none(&target) || stat_config.initial_delay) { 593 if (!all_counters_use_bpf) 594 evlist__enable(evsel_list); 595 if (stat_config.initial_delay > 0) 596 pr_info(EVLIST_ENABLED_MSG); 597 } 598 return 0; 599 } 600 601 static void disable_counters(void) 602 { 603 struct evsel *counter; 604 605 /* 606 * If we don't have tracee (attaching to task or cpu), counters may 607 * still be running. To get accurate group ratios, we must stop groups 608 * from counting before reading their constituent counters. 609 */ 610 if (!target__none(&target)) { 611 evlist__for_each_entry(evsel_list, counter) 612 bpf_counter__disable(counter); 613 if (!all_counters_use_bpf) 614 evlist__disable(evsel_list); 615 } 616 } 617 618 static volatile int workload_exec_errno; 619 620 /* 621 * evlist__prepare_workload will send a SIGUSR1 622 * if the fork fails, since we asked by setting its 623 * want_signal to true. 624 */ 625 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, 626 void *ucontext __maybe_unused) 627 { 628 workload_exec_errno = info->si_value.sival_int; 629 } 630 631 static bool evsel__should_store_id(struct evsel *counter) 632 { 633 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; 634 } 635 636 static bool is_target_alive(struct target *_target, 637 struct perf_thread_map *threads) 638 { 639 struct stat st; 640 int i; 641 642 if (!target__has_task(_target)) 643 return true; 644 645 for (i = 0; i < threads->nr; i++) { 646 char path[PATH_MAX]; 647 648 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), 649 threads->map[i].pid); 650 651 if (!stat(path, &st)) 652 return true; 653 } 654 655 return false; 656 } 657 658 static void process_evlist(struct evlist *evlist, unsigned int interval) 659 { 660 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; 661 662 if (evlist__ctlfd_process(evlist, &cmd) > 0) { 663 switch (cmd) { 664 case EVLIST_CTL_CMD_ENABLE: 665 if (interval) 666 process_interval(); 667 break; 668 case EVLIST_CTL_CMD_DISABLE: 669 if (interval) 670 process_interval(); 671 break; 672 case EVLIST_CTL_CMD_SNAPSHOT: 673 case EVLIST_CTL_CMD_ACK: 674 case EVLIST_CTL_CMD_UNSUPPORTED: 675 case EVLIST_CTL_CMD_EVLIST: 676 case EVLIST_CTL_CMD_STOP: 677 case EVLIST_CTL_CMD_PING: 678 default: 679 break; 680 } 681 } 682 } 683 684 static void compute_tts(struct timespec *time_start, struct timespec *time_stop, 685 int *time_to_sleep) 686 { 687 int tts = *time_to_sleep; 688 struct timespec time_diff; 689 690 diff_timespec(&time_diff, time_stop, time_start); 691 692 tts -= time_diff.tv_sec * MSEC_PER_SEC + 693 time_diff.tv_nsec / NSEC_PER_MSEC; 694 695 if (tts < 0) 696 tts = 0; 697 698 *time_to_sleep = tts; 699 } 700 701 static int dispatch_events(bool forks, int timeout, int interval, int *times) 702 { 703 int child_exited = 0, status = 0; 704 int time_to_sleep, sleep_time; 705 struct timespec time_start, time_stop; 706 707 if (interval) 708 sleep_time = interval; 709 else if (timeout) 710 sleep_time = timeout; 711 else 712 sleep_time = 1000; 713 714 time_to_sleep = sleep_time; 715 716 while (!done) { 717 if (forks) 718 child_exited = waitpid(child_pid, &status, WNOHANG); 719 else 720 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; 721 722 if (child_exited) 723 break; 724 725 clock_gettime(CLOCK_MONOTONIC, &time_start); 726 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ 727 if (timeout || handle_interval(interval, times)) 728 break; 729 time_to_sleep = sleep_time; 730 } else { /* fd revent */ 731 process_evlist(evsel_list, interval); 732 clock_gettime(CLOCK_MONOTONIC, &time_stop); 733 compute_tts(&time_start, &time_stop, &time_to_sleep); 734 } 735 } 736 737 return status; 738 } 739 740 enum counter_recovery { 741 COUNTER_SKIP, 742 COUNTER_RETRY, 743 COUNTER_FATAL, 744 }; 745 746 static enum counter_recovery stat_handle_error(struct evsel *counter) 747 { 748 char msg[BUFSIZ]; 749 /* 750 * PPC returns ENXIO for HW counters until 2.6.37 751 * (behavior changed with commit b0a873e). 752 */ 753 if (errno == EINVAL || errno == ENOSYS || 754 errno == ENOENT || errno == EOPNOTSUPP || 755 errno == ENXIO) { 756 if (verbose > 0) 757 ui__warning("%s event is not supported by the kernel.\n", 758 evsel__name(counter)); 759 counter->supported = false; 760 /* 761 * errored is a sticky flag that means one of the counter's 762 * cpu event had a problem and needs to be reexamined. 763 */ 764 counter->errored = true; 765 766 if ((evsel__leader(counter) != counter) || 767 !(counter->core.leader->nr_members > 1)) 768 return COUNTER_SKIP; 769 } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) { 770 if (verbose > 0) 771 ui__warning("%s\n", msg); 772 return COUNTER_RETRY; 773 } else if (target__has_per_thread(&target) && 774 evsel_list->core.threads && 775 evsel_list->core.threads->err_thread != -1) { 776 /* 777 * For global --per-thread case, skip current 778 * error thread. 779 */ 780 if (!thread_map__remove(evsel_list->core.threads, 781 evsel_list->core.threads->err_thread)) { 782 evsel_list->core.threads->err_thread = -1; 783 return COUNTER_RETRY; 784 } 785 } 786 787 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); 788 ui__error("%s\n", msg); 789 790 if (child_pid != -1) 791 kill(child_pid, SIGTERM); 792 return COUNTER_FATAL; 793 } 794 795 static int __run_perf_stat(int argc, const char **argv, int run_idx) 796 { 797 int interval = stat_config.interval; 798 int times = stat_config.times; 799 int timeout = stat_config.timeout; 800 char msg[BUFSIZ]; 801 unsigned long long t0, t1; 802 struct evsel *counter; 803 size_t l; 804 int status = 0; 805 const bool forks = (argc > 0); 806 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; 807 struct evlist_cpu_iterator evlist_cpu_itr; 808 struct affinity saved_affinity, *affinity = NULL; 809 int err; 810 bool second_pass = false; 811 812 if (forks) { 813 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { 814 perror("failed to prepare workload"); 815 return -1; 816 } 817 child_pid = evsel_list->workload.pid; 818 } 819 820 if (group) 821 evlist__set_leader(evsel_list); 822 823 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { 824 if (affinity__setup(&saved_affinity) < 0) 825 return -1; 826 affinity = &saved_affinity; 827 } 828 829 evlist__for_each_entry(evsel_list, counter) { 830 if (bpf_counter__load(counter, &target)) 831 return -1; 832 if (!evsel__is_bpf(counter)) 833 all_counters_use_bpf = false; 834 } 835 836 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 837 counter = evlist_cpu_itr.evsel; 838 839 /* 840 * bperf calls evsel__open_per_cpu() in bperf__load(), so 841 * no need to call it again here. 842 */ 843 if (target.use_bpf) 844 break; 845 846 if (counter->reset_group || counter->errored) 847 continue; 848 if (evsel__is_bpf(counter)) 849 continue; 850 try_again: 851 if (create_perf_stat_counter(counter, &stat_config, &target, 852 evlist_cpu_itr.cpu_map_idx) < 0) { 853 854 /* 855 * Weak group failed. We cannot just undo this here 856 * because earlier CPUs might be in group mode, and the kernel 857 * doesn't support mixing group and non group reads. Defer 858 * it to later. 859 * Don't close here because we're in the wrong affinity. 860 */ 861 if ((errno == EINVAL || errno == EBADF) && 862 evsel__leader(counter) != counter && 863 counter->weak_group) { 864 evlist__reset_weak_group(evsel_list, counter, false); 865 assert(counter->reset_group); 866 second_pass = true; 867 continue; 868 } 869 870 switch (stat_handle_error(counter)) { 871 case COUNTER_FATAL: 872 return -1; 873 case COUNTER_RETRY: 874 goto try_again; 875 case COUNTER_SKIP: 876 continue; 877 default: 878 break; 879 } 880 881 } 882 counter->supported = true; 883 } 884 885 if (second_pass) { 886 /* 887 * Now redo all the weak group after closing them, 888 * and also close errored counters. 889 */ 890 891 /* First close errored or weak retry */ 892 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 893 counter = evlist_cpu_itr.evsel; 894 895 if (!counter->reset_group && !counter->errored) 896 continue; 897 898 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx); 899 } 900 /* Now reopen weak */ 901 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 902 counter = evlist_cpu_itr.evsel; 903 904 if (!counter->reset_group && !counter->errored) 905 continue; 906 if (!counter->reset_group) 907 continue; 908 try_again_reset: 909 pr_debug2("reopening weak %s\n", evsel__name(counter)); 910 if (create_perf_stat_counter(counter, &stat_config, &target, 911 evlist_cpu_itr.cpu_map_idx) < 0) { 912 913 switch (stat_handle_error(counter)) { 914 case COUNTER_FATAL: 915 return -1; 916 case COUNTER_RETRY: 917 goto try_again_reset; 918 case COUNTER_SKIP: 919 continue; 920 default: 921 break; 922 } 923 } 924 counter->supported = true; 925 } 926 } 927 affinity__cleanup(affinity); 928 929 evlist__for_each_entry(evsel_list, counter) { 930 if (!counter->supported) { 931 perf_evsel__free_fd(&counter->core); 932 continue; 933 } 934 935 l = strlen(counter->unit); 936 if (l > stat_config.unit_width) 937 stat_config.unit_width = l; 938 939 if (evsel__should_store_id(counter) && 940 evsel__store_ids(counter, evsel_list)) 941 return -1; 942 } 943 944 if (evlist__apply_filters(evsel_list, &counter)) { 945 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", 946 counter->filter, evsel__name(counter), errno, 947 str_error_r(errno, msg, sizeof(msg))); 948 return -1; 949 } 950 951 if (STAT_RECORD) { 952 int fd = perf_data__fd(&perf_stat.data); 953 954 if (is_pipe) { 955 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); 956 } else { 957 err = perf_session__write_header(perf_stat.session, evsel_list, 958 fd, false); 959 } 960 961 if (err < 0) 962 return err; 963 964 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, 965 process_synthesized_event, is_pipe); 966 if (err < 0) 967 return err; 968 } 969 970 err = enable_counters(); 971 if (err) 972 return -1; 973 974 /* Exec the command, if any */ 975 if (forks) 976 evlist__start_workload(evsel_list); 977 978 t0 = rdclock(); 979 clock_gettime(CLOCK_MONOTONIC, &ref_time); 980 981 if (forks) { 982 if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) 983 status = dispatch_events(forks, timeout, interval, ×); 984 if (child_pid != -1) { 985 if (timeout) 986 kill(child_pid, SIGTERM); 987 wait4(child_pid, &status, 0, &stat_config.ru_data); 988 } 989 990 if (workload_exec_errno) { 991 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); 992 pr_err("Workload failed: %s\n", emsg); 993 return -1; 994 } 995 996 if (WIFSIGNALED(status)) 997 psignal(WTERMSIG(status), argv[0]); 998 } else { 999 status = dispatch_events(forks, timeout, interval, ×); 1000 } 1001 1002 disable_counters(); 1003 1004 t1 = rdclock(); 1005 1006 if (stat_config.walltime_run_table) 1007 stat_config.walltime_run[run_idx] = t1 - t0; 1008 1009 if (interval && stat_config.summary) { 1010 stat_config.interval = 0; 1011 stat_config.stop_read_counter = true; 1012 init_stats(&walltime_nsecs_stats); 1013 update_stats(&walltime_nsecs_stats, t1 - t0); 1014 1015 if (stat_config.aggr_mode == AGGR_GLOBAL) 1016 evlist__save_aggr_prev_raw_counts(evsel_list); 1017 1018 evlist__copy_prev_raw_counts(evsel_list); 1019 evlist__reset_prev_raw_counts(evsel_list); 1020 runtime_stat_reset(&stat_config); 1021 perf_stat__reset_shadow_per_stat(&rt_stat); 1022 } else { 1023 update_stats(&walltime_nsecs_stats, t1 - t0); 1024 update_rusage_stats(&ru_stats, &stat_config.ru_data); 1025 } 1026 1027 /* 1028 * Closing a group leader splits the group, and as we only disable 1029 * group leaders, results in remaining events becoming enabled. To 1030 * avoid arbitrary skew, we must read all counters before closing any 1031 * group leaders. 1032 */ 1033 read_counters(&(struct timespec) { .tv_nsec = t1-t0 }); 1034 1035 /* 1036 * We need to keep evsel_list alive, because it's processed 1037 * later the evsel_list will be closed after. 1038 */ 1039 if (!STAT_RECORD) 1040 evlist__close(evsel_list); 1041 1042 return WEXITSTATUS(status); 1043 } 1044 1045 static int run_perf_stat(int argc, const char **argv, int run_idx) 1046 { 1047 int ret; 1048 1049 if (pre_cmd) { 1050 ret = system(pre_cmd); 1051 if (ret) 1052 return ret; 1053 } 1054 1055 if (sync_run) 1056 sync(); 1057 1058 ret = __run_perf_stat(argc, argv, run_idx); 1059 if (ret) 1060 return ret; 1061 1062 if (post_cmd) { 1063 ret = system(post_cmd); 1064 if (ret) 1065 return ret; 1066 } 1067 1068 return ret; 1069 } 1070 1071 static void print_counters(struct timespec *ts, int argc, const char **argv) 1072 { 1073 /* Do not print anything if we record to the pipe. */ 1074 if (STAT_RECORD && perf_stat.data.is_pipe) 1075 return; 1076 if (stat_config.quiet) 1077 return; 1078 1079 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); 1080 } 1081 1082 static volatile int signr = -1; 1083 1084 static void skip_signal(int signo) 1085 { 1086 if ((child_pid == -1) || stat_config.interval) 1087 done = 1; 1088 1089 signr = signo; 1090 /* 1091 * render child_pid harmless 1092 * won't send SIGTERM to a random 1093 * process in case of race condition 1094 * and fast PID recycling 1095 */ 1096 child_pid = -1; 1097 } 1098 1099 static void sig_atexit(void) 1100 { 1101 sigset_t set, oset; 1102 1103 /* 1104 * avoid race condition with SIGCHLD handler 1105 * in skip_signal() which is modifying child_pid 1106 * goal is to avoid send SIGTERM to a random 1107 * process 1108 */ 1109 sigemptyset(&set); 1110 sigaddset(&set, SIGCHLD); 1111 sigprocmask(SIG_BLOCK, &set, &oset); 1112 1113 if (child_pid != -1) 1114 kill(child_pid, SIGTERM); 1115 1116 sigprocmask(SIG_SETMASK, &oset, NULL); 1117 1118 if (signr == -1) 1119 return; 1120 1121 signal(signr, SIG_DFL); 1122 kill(getpid(), signr); 1123 } 1124 1125 void perf_stat__set_big_num(int set) 1126 { 1127 stat_config.big_num = (set != 0); 1128 } 1129 1130 void perf_stat__set_no_csv_summary(int set) 1131 { 1132 stat_config.no_csv_summary = (set != 0); 1133 } 1134 1135 static int stat__set_big_num(const struct option *opt __maybe_unused, 1136 const char *s __maybe_unused, int unset) 1137 { 1138 big_num_opt = unset ? 0 : 1; 1139 perf_stat__set_big_num(!unset); 1140 return 0; 1141 } 1142 1143 static int enable_metric_only(const struct option *opt __maybe_unused, 1144 const char *s __maybe_unused, int unset) 1145 { 1146 force_metric_only = true; 1147 stat_config.metric_only = !unset; 1148 return 0; 1149 } 1150 1151 static int parse_metric_groups(const struct option *opt, 1152 const char *str, 1153 int unset __maybe_unused) 1154 { 1155 return metricgroup__parse_groups(opt, str, 1156 stat_config.metric_no_group, 1157 stat_config.metric_no_merge, 1158 &stat_config.metric_events); 1159 } 1160 1161 static int parse_control_option(const struct option *opt, 1162 const char *str, 1163 int unset __maybe_unused) 1164 { 1165 struct perf_stat_config *config = opt->value; 1166 1167 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); 1168 } 1169 1170 static int parse_stat_cgroups(const struct option *opt, 1171 const char *str, int unset) 1172 { 1173 if (stat_config.cgroup_list) { 1174 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 1175 return -1; 1176 } 1177 1178 return parse_cgroups(opt, str, unset); 1179 } 1180 1181 static int parse_hybrid_type(const struct option *opt, 1182 const char *str, 1183 int unset __maybe_unused) 1184 { 1185 struct evlist *evlist = *(struct evlist **)opt->value; 1186 1187 if (!list_empty(&evlist->core.entries)) { 1188 fprintf(stderr, "Must define cputype before events/metrics\n"); 1189 return -1; 1190 } 1191 1192 evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str); 1193 if (!evlist->hybrid_pmu_name) { 1194 fprintf(stderr, "--cputype %s is not supported!\n", str); 1195 return -1; 1196 } 1197 1198 return 0; 1199 } 1200 1201 static struct option stat_options[] = { 1202 OPT_BOOLEAN('T', "transaction", &transaction_run, 1203 "hardware transaction statistics"), 1204 OPT_CALLBACK('e', "event", &evsel_list, "event", 1205 "event selector. use 'perf list' to list available events", 1206 parse_events_option), 1207 OPT_CALLBACK(0, "filter", &evsel_list, "filter", 1208 "event filter", parse_filter), 1209 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, 1210 "child tasks do not inherit counters"), 1211 OPT_STRING('p', "pid", &target.pid, "pid", 1212 "stat events on existing process id"), 1213 OPT_STRING('t', "tid", &target.tid, "tid", 1214 "stat events on existing thread id"), 1215 #ifdef HAVE_BPF_SKEL 1216 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", 1217 "stat events on existing bpf program id"), 1218 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, 1219 "use bpf program to count events"), 1220 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", 1221 "path to perf_event_attr map"), 1222 #endif 1223 OPT_BOOLEAN('a', "all-cpus", &target.system_wide, 1224 "system-wide collection from all CPUs"), 1225 OPT_BOOLEAN('g', "group", &group, 1226 "put the counters into a counter group"), 1227 OPT_BOOLEAN(0, "scale", &stat_config.scale, 1228 "Use --no-scale to disable counter scaling for multiplexing"), 1229 OPT_INCR('v', "verbose", &verbose, 1230 "be more verbose (show counter open errors, etc)"), 1231 OPT_INTEGER('r', "repeat", &stat_config.run_count, 1232 "repeat command and print average + stddev (max: 100, forever: 0)"), 1233 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, 1234 "display details about each run (only with -r option)"), 1235 OPT_BOOLEAN('n', "null", &stat_config.null_run, 1236 "null run - dont start any counters"), 1237 OPT_INCR('d', "detailed", &detailed_run, 1238 "detailed run - start a lot of events"), 1239 OPT_BOOLEAN('S', "sync", &sync_run, 1240 "call sync() before starting a run"), 1241 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, 1242 "print large numbers with thousands\' separators", 1243 stat__set_big_num), 1244 OPT_STRING('C', "cpu", &target.cpu_list, "cpu", 1245 "list of cpus to monitor in system-wide"), 1246 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, 1247 "disable CPU count aggregation", AGGR_NONE), 1248 OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), 1249 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge, 1250 "Merge identical named hybrid events"), 1251 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", 1252 "print counts with custom separator"), 1253 OPT_CALLBACK('G', "cgroup", &evsel_list, "name", 1254 "monitor event in cgroup name only", parse_stat_cgroups), 1255 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", 1256 "expand events for each cgroup"), 1257 OPT_STRING('o', "output", &output_name, "file", "output file name"), 1258 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), 1259 OPT_INTEGER(0, "log-fd", &output_fd, 1260 "log output to fd, instead of stderr"), 1261 OPT_STRING(0, "pre", &pre_cmd, "command", 1262 "command to run prior to the measured command"), 1263 OPT_STRING(0, "post", &post_cmd, "command", 1264 "command to run after to the measured command"), 1265 OPT_UINTEGER('I', "interval-print", &stat_config.interval, 1266 "print counts at regular interval in ms " 1267 "(overhead is possible for values <= 100ms)"), 1268 OPT_INTEGER(0, "interval-count", &stat_config.times, 1269 "print counts for fixed number of times"), 1270 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, 1271 "clear screen in between new interval"), 1272 OPT_UINTEGER(0, "timeout", &stat_config.timeout, 1273 "stop workload and print counts after a timeout period in ms (>= 10ms)"), 1274 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, 1275 "aggregate counts per processor socket", AGGR_SOCKET), 1276 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, 1277 "aggregate counts per processor die", AGGR_DIE), 1278 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, 1279 "aggregate counts per physical processor core", AGGR_CORE), 1280 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, 1281 "aggregate counts per thread", AGGR_THREAD), 1282 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, 1283 "aggregate counts per numa node", AGGR_NODE), 1284 OPT_INTEGER('D', "delay", &stat_config.initial_delay, 1285 "ms to wait before starting measurement after program start (-1: start with events disabled)"), 1286 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, 1287 "Only print computed metrics. No raw values", enable_metric_only), 1288 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, 1289 "don't group metric events, impacts multiplexing"), 1290 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, 1291 "don't try to share events between metrics in a group"), 1292 OPT_BOOLEAN(0, "topdown", &topdown_run, 1293 "measure top-down statistics"), 1294 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, 1295 "Set the metrics level for the top-down statistics (0: max level)"), 1296 OPT_BOOLEAN(0, "smi-cost", &smi_cost, 1297 "measure SMI cost"), 1298 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", 1299 "monitor specified metrics or metric groups (separated by ,)", 1300 parse_metric_groups), 1301 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, 1302 "Configure all used events to run in kernel space.", 1303 PARSE_OPT_EXCLUSIVE), 1304 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, 1305 "Configure all used events to run in user space.", 1306 PARSE_OPT_EXCLUSIVE), 1307 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, 1308 "Use with 'percore' event qualifier to show the event " 1309 "counts of one hardware thread by sum up total hardware " 1310 "threads of same physical core"), 1311 OPT_BOOLEAN(0, "summary", &stat_config.summary, 1312 "print summary for interval mode"), 1313 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, 1314 "don't print 'summary' for CSV summary output"), 1315 OPT_BOOLEAN(0, "quiet", &stat_config.quiet, 1316 "don't print output (useful with record)"), 1317 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", 1318 "Only enable events on applying cpu with this type " 1319 "for hybrid platform (e.g. core or atom)", 1320 parse_hybrid_type), 1321 #ifdef HAVE_LIBPFM 1322 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", 1323 "libpfm4 event selector. use 'perf list' to list available events", 1324 parse_libpfm_events_option), 1325 #endif 1326 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", 1327 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" 1328 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" 1329 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", 1330 parse_control_option), 1331 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", 1332 "measure I/O performance metrics provided by arch/platform", 1333 iostat_parse), 1334 OPT_END() 1335 }; 1336 1337 static const char *const aggr_mode__string[] = { 1338 [AGGR_CORE] = "core", 1339 [AGGR_DIE] = "die", 1340 [AGGR_GLOBAL] = "global", 1341 [AGGR_NODE] = "node", 1342 [AGGR_NONE] = "none", 1343 [AGGR_SOCKET] = "socket", 1344 [AGGR_THREAD] = "thread", 1345 [AGGR_UNSET] = "unset", 1346 }; 1347 1348 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, 1349 struct perf_cpu cpu) 1350 { 1351 return aggr_cpu_id__socket(cpu, /*data=*/NULL); 1352 } 1353 1354 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, 1355 struct perf_cpu cpu) 1356 { 1357 return aggr_cpu_id__die(cpu, /*data=*/NULL); 1358 } 1359 1360 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, 1361 struct perf_cpu cpu) 1362 { 1363 return aggr_cpu_id__core(cpu, /*data=*/NULL); 1364 } 1365 1366 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, 1367 struct perf_cpu cpu) 1368 { 1369 return aggr_cpu_id__node(cpu, /*data=*/NULL); 1370 } 1371 1372 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, 1373 aggr_get_id_t get_id, struct perf_cpu cpu) 1374 { 1375 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1376 1377 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) 1378 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); 1379 1380 id = config->cpus_aggr_map->map[cpu.cpu]; 1381 return id; 1382 } 1383 1384 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, 1385 struct perf_cpu cpu) 1386 { 1387 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); 1388 } 1389 1390 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, 1391 struct perf_cpu cpu) 1392 { 1393 return perf_stat__get_aggr(config, perf_stat__get_die, cpu); 1394 } 1395 1396 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, 1397 struct perf_cpu cpu) 1398 { 1399 return perf_stat__get_aggr(config, perf_stat__get_core, cpu); 1400 } 1401 1402 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, 1403 struct perf_cpu cpu) 1404 { 1405 return perf_stat__get_aggr(config, perf_stat__get_node, cpu); 1406 } 1407 1408 static bool term_percore_set(void) 1409 { 1410 struct evsel *counter; 1411 1412 evlist__for_each_entry(evsel_list, counter) { 1413 if (counter->percore) 1414 return true; 1415 } 1416 1417 return false; 1418 } 1419 1420 static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) 1421 { 1422 switch (aggr_mode) { 1423 case AGGR_SOCKET: 1424 return aggr_cpu_id__socket; 1425 case AGGR_DIE: 1426 return aggr_cpu_id__die; 1427 case AGGR_CORE: 1428 return aggr_cpu_id__core; 1429 case AGGR_NODE: 1430 return aggr_cpu_id__node; 1431 case AGGR_NONE: 1432 if (term_percore_set()) 1433 return aggr_cpu_id__core; 1434 1435 return NULL; 1436 case AGGR_GLOBAL: 1437 case AGGR_THREAD: 1438 case AGGR_UNSET: 1439 default: 1440 return NULL; 1441 } 1442 } 1443 1444 static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) 1445 { 1446 switch (aggr_mode) { 1447 case AGGR_SOCKET: 1448 return perf_stat__get_socket_cached; 1449 case AGGR_DIE: 1450 return perf_stat__get_die_cached; 1451 case AGGR_CORE: 1452 return perf_stat__get_core_cached; 1453 case AGGR_NODE: 1454 return perf_stat__get_node_cached; 1455 case AGGR_NONE: 1456 if (term_percore_set()) { 1457 return perf_stat__get_core_cached; 1458 } 1459 return NULL; 1460 case AGGR_GLOBAL: 1461 case AGGR_THREAD: 1462 case AGGR_UNSET: 1463 default: 1464 return NULL; 1465 } 1466 } 1467 1468 static int perf_stat_init_aggr_mode(void) 1469 { 1470 int nr; 1471 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); 1472 1473 if (get_id) { 1474 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1475 get_id, /*data=*/NULL); 1476 if (!stat_config.aggr_map) { 1477 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1478 return -1; 1479 } 1480 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); 1481 } 1482 1483 /* 1484 * The evsel_list->cpus is the base we operate on, 1485 * taking the highest cpu number to be the size of 1486 * the aggregation translate cpumap. 1487 */ 1488 if (evsel_list->core.user_requested_cpus) 1489 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu; 1490 else 1491 nr = 0; 1492 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); 1493 return stat_config.cpus_aggr_map ? 0 : -ENOMEM; 1494 } 1495 1496 static void cpu_aggr_map__delete(struct cpu_aggr_map *map) 1497 { 1498 if (map) { 1499 WARN_ONCE(refcount_read(&map->refcnt) != 0, 1500 "cpu_aggr_map refcnt unbalanced\n"); 1501 free(map); 1502 } 1503 } 1504 1505 static void cpu_aggr_map__put(struct cpu_aggr_map *map) 1506 { 1507 if (map && refcount_dec_and_test(&map->refcnt)) 1508 cpu_aggr_map__delete(map); 1509 } 1510 1511 static void perf_stat__exit_aggr_mode(void) 1512 { 1513 cpu_aggr_map__put(stat_config.aggr_map); 1514 cpu_aggr_map__put(stat_config.cpus_aggr_map); 1515 stat_config.aggr_map = NULL; 1516 stat_config.cpus_aggr_map = NULL; 1517 } 1518 1519 static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data) 1520 { 1521 struct perf_env *env = data; 1522 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1523 1524 if (cpu.cpu != -1) 1525 id.socket = env->cpu[cpu.cpu].socket_id; 1526 1527 return id; 1528 } 1529 1530 static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) 1531 { 1532 struct perf_env *env = data; 1533 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1534 1535 if (cpu.cpu != -1) { 1536 /* 1537 * die_id is relative to socket, so start 1538 * with the socket ID and then add die to 1539 * make a unique ID. 1540 */ 1541 id.socket = env->cpu[cpu.cpu].socket_id; 1542 id.die = env->cpu[cpu.cpu].die_id; 1543 } 1544 1545 return id; 1546 } 1547 1548 static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) 1549 { 1550 struct perf_env *env = data; 1551 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1552 1553 if (cpu.cpu != -1) { 1554 /* 1555 * core_id is relative to socket and die, 1556 * we need a global id. So we set 1557 * socket, die id and core id 1558 */ 1559 id.socket = env->cpu[cpu.cpu].socket_id; 1560 id.die = env->cpu[cpu.cpu].die_id; 1561 id.core = env->cpu[cpu.cpu].core_id; 1562 } 1563 1564 return id; 1565 } 1566 1567 static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) 1568 { 1569 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1570 1571 id.node = perf_env__numa_node(data, cpu); 1572 return id; 1573 } 1574 1575 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, 1576 struct perf_cpu cpu) 1577 { 1578 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1579 } 1580 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, 1581 struct perf_cpu cpu) 1582 { 1583 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1584 } 1585 1586 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, 1587 struct perf_cpu cpu) 1588 { 1589 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1590 } 1591 1592 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, 1593 struct perf_cpu cpu) 1594 { 1595 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1596 } 1597 1598 static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) 1599 { 1600 switch (aggr_mode) { 1601 case AGGR_SOCKET: 1602 return perf_env__get_socket_aggr_by_cpu; 1603 case AGGR_DIE: 1604 return perf_env__get_die_aggr_by_cpu; 1605 case AGGR_CORE: 1606 return perf_env__get_core_aggr_by_cpu; 1607 case AGGR_NODE: 1608 return perf_env__get_node_aggr_by_cpu; 1609 case AGGR_NONE: 1610 case AGGR_GLOBAL: 1611 case AGGR_THREAD: 1612 case AGGR_UNSET: 1613 default: 1614 return NULL; 1615 } 1616 } 1617 1618 static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) 1619 { 1620 switch (aggr_mode) { 1621 case AGGR_SOCKET: 1622 return perf_stat__get_socket_file; 1623 case AGGR_DIE: 1624 return perf_stat__get_die_file; 1625 case AGGR_CORE: 1626 return perf_stat__get_core_file; 1627 case AGGR_NODE: 1628 return perf_stat__get_node_file; 1629 case AGGR_NONE: 1630 case AGGR_GLOBAL: 1631 case AGGR_THREAD: 1632 case AGGR_UNSET: 1633 default: 1634 return NULL; 1635 } 1636 } 1637 1638 static int perf_stat_init_aggr_mode_file(struct perf_stat *st) 1639 { 1640 struct perf_env *env = &st->session->header.env; 1641 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); 1642 1643 if (!get_id) 1644 return 0; 1645 1646 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, get_id, env); 1647 if (!stat_config.aggr_map) { 1648 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1649 return -1; 1650 } 1651 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode); 1652 return 0; 1653 } 1654 1655 /* 1656 * Add default attributes, if there were no attributes specified or 1657 * if -d/--detailed, -d -d or -d -d -d is used: 1658 */ 1659 static int add_default_attributes(void) 1660 { 1661 int err; 1662 struct perf_event_attr default_attrs0[] = { 1663 1664 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, 1665 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, 1666 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, 1667 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, 1668 1669 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, 1670 }; 1671 struct perf_event_attr frontend_attrs[] = { 1672 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, 1673 }; 1674 struct perf_event_attr backend_attrs[] = { 1675 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, 1676 }; 1677 struct perf_event_attr default_attrs1[] = { 1678 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, 1679 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, 1680 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, 1681 1682 }; 1683 1684 /* 1685 * Detailed stats (-d), covering the L1 and last level data caches: 1686 */ 1687 struct perf_event_attr detailed_attrs[] = { 1688 1689 { .type = PERF_TYPE_HW_CACHE, 1690 .config = 1691 PERF_COUNT_HW_CACHE_L1D << 0 | 1692 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1693 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1694 1695 { .type = PERF_TYPE_HW_CACHE, 1696 .config = 1697 PERF_COUNT_HW_CACHE_L1D << 0 | 1698 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1699 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1700 1701 { .type = PERF_TYPE_HW_CACHE, 1702 .config = 1703 PERF_COUNT_HW_CACHE_LL << 0 | 1704 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1705 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1706 1707 { .type = PERF_TYPE_HW_CACHE, 1708 .config = 1709 PERF_COUNT_HW_CACHE_LL << 0 | 1710 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1711 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1712 }; 1713 1714 /* 1715 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: 1716 */ 1717 struct perf_event_attr very_detailed_attrs[] = { 1718 1719 { .type = PERF_TYPE_HW_CACHE, 1720 .config = 1721 PERF_COUNT_HW_CACHE_L1I << 0 | 1722 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1723 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1724 1725 { .type = PERF_TYPE_HW_CACHE, 1726 .config = 1727 PERF_COUNT_HW_CACHE_L1I << 0 | 1728 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1729 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1730 1731 { .type = PERF_TYPE_HW_CACHE, 1732 .config = 1733 PERF_COUNT_HW_CACHE_DTLB << 0 | 1734 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1735 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1736 1737 { .type = PERF_TYPE_HW_CACHE, 1738 .config = 1739 PERF_COUNT_HW_CACHE_DTLB << 0 | 1740 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1741 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1742 1743 { .type = PERF_TYPE_HW_CACHE, 1744 .config = 1745 PERF_COUNT_HW_CACHE_ITLB << 0 | 1746 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1747 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1748 1749 { .type = PERF_TYPE_HW_CACHE, 1750 .config = 1751 PERF_COUNT_HW_CACHE_ITLB << 0 | 1752 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1753 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1754 1755 }; 1756 1757 /* 1758 * Very, very detailed stats (-d -d -d), adding prefetch events: 1759 */ 1760 struct perf_event_attr very_very_detailed_attrs[] = { 1761 1762 { .type = PERF_TYPE_HW_CACHE, 1763 .config = 1764 PERF_COUNT_HW_CACHE_L1D << 0 | 1765 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 1766 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1767 1768 { .type = PERF_TYPE_HW_CACHE, 1769 .config = 1770 PERF_COUNT_HW_CACHE_L1D << 0 | 1771 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 1772 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1773 }; 1774 1775 struct perf_event_attr default_null_attrs[] = {}; 1776 1777 /* Set attrs if no event is selected and !null_run: */ 1778 if (stat_config.null_run) 1779 return 0; 1780 1781 if (transaction_run) { 1782 struct parse_events_error errinfo; 1783 /* Handle -T as -M transaction. Once platform specific metrics 1784 * support has been added to the json files, all architectures 1785 * will use this approach. To determine transaction support 1786 * on an architecture test for such a metric name. 1787 */ 1788 if (metricgroup__has_metric("transaction")) { 1789 struct option opt = { .value = &evsel_list }; 1790 1791 return metricgroup__parse_groups(&opt, "transaction", 1792 stat_config.metric_no_group, 1793 stat_config.metric_no_merge, 1794 &stat_config.metric_events); 1795 } 1796 1797 parse_events_error__init(&errinfo); 1798 if (pmu_have_event("cpu", "cycles-ct") && 1799 pmu_have_event("cpu", "el-start")) 1800 err = parse_events(evsel_list, transaction_attrs, 1801 &errinfo); 1802 else 1803 err = parse_events(evsel_list, 1804 transaction_limited_attrs, 1805 &errinfo); 1806 if (err) { 1807 fprintf(stderr, "Cannot set up transaction events\n"); 1808 parse_events_error__print(&errinfo, transaction_attrs); 1809 } 1810 parse_events_error__exit(&errinfo); 1811 return err ? -1 : 0; 1812 } 1813 1814 if (smi_cost) { 1815 struct parse_events_error errinfo; 1816 int smi; 1817 1818 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { 1819 fprintf(stderr, "freeze_on_smi is not supported.\n"); 1820 return -1; 1821 } 1822 1823 if (!smi) { 1824 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { 1825 fprintf(stderr, "Failed to set freeze_on_smi.\n"); 1826 return -1; 1827 } 1828 smi_reset = true; 1829 } 1830 1831 if (!pmu_have_event("msr", "aperf") || 1832 !pmu_have_event("msr", "smi")) { 1833 fprintf(stderr, "To measure SMI cost, it needs " 1834 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); 1835 return -1; 1836 } 1837 if (!force_metric_only) 1838 stat_config.metric_only = true; 1839 1840 parse_events_error__init(&errinfo); 1841 err = parse_events(evsel_list, smi_cost_attrs, &errinfo); 1842 if (err) { 1843 parse_events_error__print(&errinfo, smi_cost_attrs); 1844 fprintf(stderr, "Cannot set up SMI cost events\n"); 1845 } 1846 parse_events_error__exit(&errinfo); 1847 return err ? -1 : 0; 1848 } 1849 1850 if (topdown_run) { 1851 const char **metric_attrs = topdown_metric_attrs; 1852 unsigned int max_level = 1; 1853 char *str = NULL; 1854 bool warn = false; 1855 const char *pmu_name = arch_get_topdown_pmu_name(evsel_list, true); 1856 1857 if (!force_metric_only) 1858 stat_config.metric_only = true; 1859 1860 if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) { 1861 metric_attrs = topdown_metric_L2_attrs; 1862 max_level = 2; 1863 } 1864 1865 if (stat_config.topdown_level > max_level) { 1866 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); 1867 return -1; 1868 } else if (!stat_config.topdown_level) 1869 stat_config.topdown_level = max_level; 1870 1871 if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) { 1872 pr_err("Out of memory\n"); 1873 return -1; 1874 } 1875 1876 if (metric_attrs[0] && str) { 1877 if (!stat_config.interval && !stat_config.metric_only) { 1878 fprintf(stat_config.output, 1879 "Topdown accuracy may decrease when measuring long periods.\n" 1880 "Please print the result regularly, e.g. -I1000\n"); 1881 } 1882 goto setup_metrics; 1883 } 1884 1885 zfree(&str); 1886 1887 if (stat_config.aggr_mode != AGGR_GLOBAL && 1888 stat_config.aggr_mode != AGGR_CORE) { 1889 pr_err("top down event configuration requires --per-core mode\n"); 1890 return -1; 1891 } 1892 stat_config.aggr_mode = AGGR_CORE; 1893 if (nr_cgroups || !target__has_cpu(&target)) { 1894 pr_err("top down event configuration requires system-wide mode (-a)\n"); 1895 return -1; 1896 } 1897 1898 if (topdown_filter_events(topdown_attrs, &str, 1899 arch_topdown_check_group(&warn), 1900 pmu_name) < 0) { 1901 pr_err("Out of memory\n"); 1902 return -1; 1903 } 1904 1905 if (topdown_attrs[0] && str) { 1906 struct parse_events_error errinfo; 1907 if (warn) 1908 arch_topdown_group_warn(); 1909 setup_metrics: 1910 parse_events_error__init(&errinfo); 1911 err = parse_events(evsel_list, str, &errinfo); 1912 if (err) { 1913 fprintf(stderr, 1914 "Cannot set up top down events %s: %d\n", 1915 str, err); 1916 parse_events_error__print(&errinfo, str); 1917 parse_events_error__exit(&errinfo); 1918 free(str); 1919 return -1; 1920 } 1921 parse_events_error__exit(&errinfo); 1922 } else { 1923 fprintf(stderr, "System does not support topdown\n"); 1924 return -1; 1925 } 1926 free(str); 1927 } 1928 1929 if (!evsel_list->core.nr_entries) { 1930 if (target__has_cpu(&target)) 1931 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; 1932 1933 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) 1934 return -1; 1935 if (pmu_have_event("cpu", "stalled-cycles-frontend")) { 1936 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) 1937 return -1; 1938 } 1939 if (pmu_have_event("cpu", "stalled-cycles-backend")) { 1940 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) 1941 return -1; 1942 } 1943 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) 1944 return -1; 1945 1946 stat_config.topdown_level = TOPDOWN_MAX_LEVEL; 1947 /* Platform specific attrs */ 1948 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0) 1949 return -1; 1950 } 1951 1952 /* Detailed events get appended to the event list: */ 1953 1954 if (detailed_run < 1) 1955 return 0; 1956 1957 /* Append detailed run extra attributes: */ 1958 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) 1959 return -1; 1960 1961 if (detailed_run < 2) 1962 return 0; 1963 1964 /* Append very detailed run extra attributes: */ 1965 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) 1966 return -1; 1967 1968 if (detailed_run < 3) 1969 return 0; 1970 1971 /* Append very, very detailed run extra attributes: */ 1972 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); 1973 } 1974 1975 static const char * const stat_record_usage[] = { 1976 "perf stat record [<options>]", 1977 NULL, 1978 }; 1979 1980 static void init_features(struct perf_session *session) 1981 { 1982 int feat; 1983 1984 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) 1985 perf_header__set_feat(&session->header, feat); 1986 1987 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); 1988 perf_header__clear_feat(&session->header, HEADER_BUILD_ID); 1989 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); 1990 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); 1991 perf_header__clear_feat(&session->header, HEADER_AUXTRACE); 1992 } 1993 1994 static int __cmd_record(int argc, const char **argv) 1995 { 1996 struct perf_session *session; 1997 struct perf_data *data = &perf_stat.data; 1998 1999 argc = parse_options(argc, argv, stat_options, stat_record_usage, 2000 PARSE_OPT_STOP_AT_NON_OPTION); 2001 2002 if (output_name) 2003 data->path = output_name; 2004 2005 if (stat_config.run_count != 1 || forever) { 2006 pr_err("Cannot use -r option with perf stat record.\n"); 2007 return -1; 2008 } 2009 2010 session = perf_session__new(data, NULL); 2011 if (IS_ERR(session)) { 2012 pr_err("Perf session creation failed\n"); 2013 return PTR_ERR(session); 2014 } 2015 2016 init_features(session); 2017 2018 session->evlist = evsel_list; 2019 perf_stat.session = session; 2020 perf_stat.record = true; 2021 return argc; 2022 } 2023 2024 static int process_stat_round_event(struct perf_session *session, 2025 union perf_event *event) 2026 { 2027 struct perf_record_stat_round *stat_round = &event->stat_round; 2028 struct evsel *counter; 2029 struct timespec tsh, *ts = NULL; 2030 const char **argv = session->header.env.cmdline_argv; 2031 int argc = session->header.env.nr_cmdline; 2032 2033 evlist__for_each_entry(evsel_list, counter) 2034 perf_stat_process_counter(&stat_config, counter); 2035 2036 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) 2037 update_stats(&walltime_nsecs_stats, stat_round->time); 2038 2039 if (stat_config.interval && stat_round->time) { 2040 tsh.tv_sec = stat_round->time / NSEC_PER_SEC; 2041 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; 2042 ts = &tsh; 2043 } 2044 2045 print_counters(ts, argc, argv); 2046 return 0; 2047 } 2048 2049 static 2050 int process_stat_config_event(struct perf_session *session, 2051 union perf_event *event) 2052 { 2053 struct perf_tool *tool = session->tool; 2054 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2055 2056 perf_event__read_stat_config(&stat_config, &event->stat_config); 2057 2058 if (perf_cpu_map__empty(st->cpus)) { 2059 if (st->aggr_mode != AGGR_UNSET) 2060 pr_warning("warning: processing task data, aggregation mode not set\n"); 2061 return 0; 2062 } 2063 2064 if (st->aggr_mode != AGGR_UNSET) 2065 stat_config.aggr_mode = st->aggr_mode; 2066 2067 if (perf_stat.data.is_pipe) 2068 perf_stat_init_aggr_mode(); 2069 else 2070 perf_stat_init_aggr_mode_file(st); 2071 2072 return 0; 2073 } 2074 2075 static int set_maps(struct perf_stat *st) 2076 { 2077 if (!st->cpus || !st->threads) 2078 return 0; 2079 2080 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) 2081 return -EINVAL; 2082 2083 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); 2084 2085 if (evlist__alloc_stats(evsel_list, true)) 2086 return -ENOMEM; 2087 2088 st->maps_allocated = true; 2089 return 0; 2090 } 2091 2092 static 2093 int process_thread_map_event(struct perf_session *session, 2094 union perf_event *event) 2095 { 2096 struct perf_tool *tool = session->tool; 2097 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2098 2099 if (st->threads) { 2100 pr_warning("Extra thread map event, ignoring.\n"); 2101 return 0; 2102 } 2103 2104 st->threads = thread_map__new_event(&event->thread_map); 2105 if (!st->threads) 2106 return -ENOMEM; 2107 2108 return set_maps(st); 2109 } 2110 2111 static 2112 int process_cpu_map_event(struct perf_session *session, 2113 union perf_event *event) 2114 { 2115 struct perf_tool *tool = session->tool; 2116 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2117 struct perf_cpu_map *cpus; 2118 2119 if (st->cpus) { 2120 pr_warning("Extra cpu map event, ignoring.\n"); 2121 return 0; 2122 } 2123 2124 cpus = cpu_map__new_data(&event->cpu_map.data); 2125 if (!cpus) 2126 return -ENOMEM; 2127 2128 st->cpus = cpus; 2129 return set_maps(st); 2130 } 2131 2132 static const char * const stat_report_usage[] = { 2133 "perf stat report [<options>]", 2134 NULL, 2135 }; 2136 2137 static struct perf_stat perf_stat = { 2138 .tool = { 2139 .attr = perf_event__process_attr, 2140 .event_update = perf_event__process_event_update, 2141 .thread_map = process_thread_map_event, 2142 .cpu_map = process_cpu_map_event, 2143 .stat_config = process_stat_config_event, 2144 .stat = perf_event__process_stat_event, 2145 .stat_round = process_stat_round_event, 2146 }, 2147 .aggr_mode = AGGR_UNSET, 2148 }; 2149 2150 static int __cmd_report(int argc, const char **argv) 2151 { 2152 struct perf_session *session; 2153 const struct option options[] = { 2154 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2155 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, 2156 "aggregate counts per processor socket", AGGR_SOCKET), 2157 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, 2158 "aggregate counts per processor die", AGGR_DIE), 2159 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, 2160 "aggregate counts per physical processor core", AGGR_CORE), 2161 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, 2162 "aggregate counts per numa node", AGGR_NODE), 2163 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, 2164 "disable CPU count aggregation", AGGR_NONE), 2165 OPT_END() 2166 }; 2167 struct stat st; 2168 int ret; 2169 2170 argc = parse_options(argc, argv, options, stat_report_usage, 0); 2171 2172 if (!input_name || !strlen(input_name)) { 2173 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 2174 input_name = "-"; 2175 else 2176 input_name = "perf.data"; 2177 } 2178 2179 perf_stat.data.path = input_name; 2180 perf_stat.data.mode = PERF_DATA_MODE_READ; 2181 2182 session = perf_session__new(&perf_stat.data, &perf_stat.tool); 2183 if (IS_ERR(session)) 2184 return PTR_ERR(session); 2185 2186 perf_stat.session = session; 2187 stat_config.output = stderr; 2188 evsel_list = session->evlist; 2189 2190 ret = perf_session__process_events(session); 2191 if (ret) 2192 return ret; 2193 2194 perf_session__delete(session); 2195 return 0; 2196 } 2197 2198 static void setup_system_wide(int forks) 2199 { 2200 /* 2201 * Make system wide (-a) the default target if 2202 * no target was specified and one of following 2203 * conditions is met: 2204 * 2205 * - there's no workload specified 2206 * - there is workload specified but all requested 2207 * events are system wide events 2208 */ 2209 if (!target__none(&target)) 2210 return; 2211 2212 if (!forks) 2213 target.system_wide = true; 2214 else { 2215 struct evsel *counter; 2216 2217 evlist__for_each_entry(evsel_list, counter) { 2218 if (!counter->core.requires_cpu && 2219 strcmp(counter->name, "duration_time")) { 2220 return; 2221 } 2222 } 2223 2224 if (evsel_list->core.nr_entries) 2225 target.system_wide = true; 2226 } 2227 } 2228 2229 int cmd_stat(int argc, const char **argv) 2230 { 2231 const char * const stat_usage[] = { 2232 "perf stat [<options>] [<command>]", 2233 NULL 2234 }; 2235 int status = -EINVAL, run_idx, err; 2236 const char *mode; 2237 FILE *output = stderr; 2238 unsigned int interval, timeout; 2239 const char * const stat_subcommands[] = { "record", "report" }; 2240 char errbuf[BUFSIZ]; 2241 2242 setlocale(LC_ALL, ""); 2243 2244 evsel_list = evlist__new(); 2245 if (evsel_list == NULL) 2246 return -ENOMEM; 2247 2248 parse_events__shrink_config_terms(); 2249 2250 /* String-parsing callback-based options would segfault when negated */ 2251 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); 2252 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); 2253 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); 2254 2255 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, 2256 (const char **) stat_usage, 2257 PARSE_OPT_STOP_AT_NON_OPTION); 2258 perf_stat__collect_metric_expr(evsel_list); 2259 perf_stat__init_shadow_stats(); 2260 2261 if (stat_config.csv_sep) { 2262 stat_config.csv_output = true; 2263 if (!strcmp(stat_config.csv_sep, "\\t")) 2264 stat_config.csv_sep = "\t"; 2265 } else 2266 stat_config.csv_sep = DEFAULT_SEPARATOR; 2267 2268 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { 2269 argc = __cmd_record(argc, argv); 2270 if (argc < 0) 2271 return -1; 2272 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2273 return __cmd_report(argc, argv); 2274 2275 interval = stat_config.interval; 2276 timeout = stat_config.timeout; 2277 2278 /* 2279 * For record command the -o is already taken care of. 2280 */ 2281 if (!STAT_RECORD && output_name && strcmp(output_name, "-")) 2282 output = NULL; 2283 2284 if (output_name && output_fd) { 2285 fprintf(stderr, "cannot use both --output and --log-fd\n"); 2286 parse_options_usage(stat_usage, stat_options, "o", 1); 2287 parse_options_usage(NULL, stat_options, "log-fd", 0); 2288 goto out; 2289 } 2290 2291 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { 2292 fprintf(stderr, "--metric-only is not supported with --per-thread\n"); 2293 goto out; 2294 } 2295 2296 if (stat_config.metric_only && stat_config.run_count > 1) { 2297 fprintf(stderr, "--metric-only is not supported with -r\n"); 2298 goto out; 2299 } 2300 2301 if (stat_config.walltime_run_table && stat_config.run_count <= 1) { 2302 fprintf(stderr, "--table is only supported with -r\n"); 2303 parse_options_usage(stat_usage, stat_options, "r", 1); 2304 parse_options_usage(NULL, stat_options, "table", 0); 2305 goto out; 2306 } 2307 2308 if (output_fd < 0) { 2309 fprintf(stderr, "argument to --log-fd must be a > 0\n"); 2310 parse_options_usage(stat_usage, stat_options, "log-fd", 0); 2311 goto out; 2312 } 2313 2314 if (!output && !stat_config.quiet) { 2315 struct timespec tm; 2316 mode = append_file ? "a" : "w"; 2317 2318 output = fopen(output_name, mode); 2319 if (!output) { 2320 perror("failed to create output file"); 2321 return -1; 2322 } 2323 clock_gettime(CLOCK_REALTIME, &tm); 2324 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); 2325 } else if (output_fd > 0) { 2326 mode = append_file ? "a" : "w"; 2327 output = fdopen(output_fd, mode); 2328 if (!output) { 2329 perror("Failed opening logfd"); 2330 return -errno; 2331 } 2332 } 2333 2334 stat_config.output = output; 2335 2336 /* 2337 * let the spreadsheet do the pretty-printing 2338 */ 2339 if (stat_config.csv_output) { 2340 /* User explicitly passed -B? */ 2341 if (big_num_opt == 1) { 2342 fprintf(stderr, "-B option not supported with -x\n"); 2343 parse_options_usage(stat_usage, stat_options, "B", 1); 2344 parse_options_usage(NULL, stat_options, "x", 1); 2345 goto out; 2346 } else /* Nope, so disable big number formatting */ 2347 stat_config.big_num = false; 2348 } else if (big_num_opt == 0) /* User passed --no-big-num */ 2349 stat_config.big_num = false; 2350 2351 err = target__validate(&target); 2352 if (err) { 2353 target__strerror(&target, err, errbuf, BUFSIZ); 2354 pr_warning("%s\n", errbuf); 2355 } 2356 2357 setup_system_wide(argc); 2358 2359 /* 2360 * Display user/system times only for single 2361 * run and when there's specified tracee. 2362 */ 2363 if ((stat_config.run_count == 1) && target__none(&target)) 2364 stat_config.ru_display = true; 2365 2366 if (stat_config.run_count < 0) { 2367 pr_err("Run count must be a positive number\n"); 2368 parse_options_usage(stat_usage, stat_options, "r", 1); 2369 goto out; 2370 } else if (stat_config.run_count == 0) { 2371 forever = true; 2372 stat_config.run_count = 1; 2373 } 2374 2375 if (stat_config.walltime_run_table) { 2376 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); 2377 if (!stat_config.walltime_run) { 2378 pr_err("failed to setup -r option"); 2379 goto out; 2380 } 2381 } 2382 2383 if ((stat_config.aggr_mode == AGGR_THREAD) && 2384 !target__has_task(&target)) { 2385 if (!target.system_wide || target.cpu_list) { 2386 fprintf(stderr, "The --per-thread option is only " 2387 "available when monitoring via -p -t -a " 2388 "options or only --per-thread.\n"); 2389 parse_options_usage(NULL, stat_options, "p", 1); 2390 parse_options_usage(NULL, stat_options, "t", 1); 2391 goto out; 2392 } 2393 } 2394 2395 /* 2396 * no_aggr, cgroup are for system-wide only 2397 * --per-thread is aggregated per thread, we dont mix it with cpu mode 2398 */ 2399 if (((stat_config.aggr_mode != AGGR_GLOBAL && 2400 stat_config.aggr_mode != AGGR_THREAD) || 2401 (nr_cgroups || stat_config.cgroup_list)) && 2402 !target__has_cpu(&target)) { 2403 fprintf(stderr, "both cgroup and no-aggregation " 2404 "modes only available in system-wide mode\n"); 2405 2406 parse_options_usage(stat_usage, stat_options, "G", 1); 2407 parse_options_usage(NULL, stat_options, "A", 1); 2408 parse_options_usage(NULL, stat_options, "a", 1); 2409 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2410 goto out; 2411 } 2412 2413 if (stat_config.iostat_run) { 2414 status = iostat_prepare(evsel_list, &stat_config); 2415 if (status) 2416 goto out; 2417 if (iostat_mode == IOSTAT_LIST) { 2418 iostat_list(evsel_list, &stat_config); 2419 goto out; 2420 } else if (verbose) 2421 iostat_list(evsel_list, &stat_config); 2422 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) 2423 target.system_wide = true; 2424 } 2425 2426 if (add_default_attributes()) 2427 goto out; 2428 2429 if (stat_config.cgroup_list) { 2430 if (nr_cgroups > 0) { 2431 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 2432 parse_options_usage(stat_usage, stat_options, "G", 1); 2433 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2434 goto out; 2435 } 2436 2437 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, 2438 &stat_config.metric_events, true) < 0) { 2439 parse_options_usage(stat_usage, stat_options, 2440 "for-each-cgroup", 0); 2441 goto out; 2442 } 2443 } 2444 2445 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) 2446 target.per_thread = true; 2447 2448 if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) { 2449 pr_err("failed to use cpu list %s\n", target.cpu_list); 2450 goto out; 2451 } 2452 2453 target.hybrid = perf_pmu__has_hybrid(); 2454 if (evlist__create_maps(evsel_list, &target) < 0) { 2455 if (target__has_task(&target)) { 2456 pr_err("Problems finding threads of monitor\n"); 2457 parse_options_usage(stat_usage, stat_options, "p", 1); 2458 parse_options_usage(NULL, stat_options, "t", 1); 2459 } else if (target__has_cpu(&target)) { 2460 perror("failed to parse CPUs map"); 2461 parse_options_usage(stat_usage, stat_options, "C", 1); 2462 parse_options_usage(NULL, stat_options, "a", 1); 2463 } 2464 goto out; 2465 } 2466 2467 evlist__check_cpu_maps(evsel_list); 2468 2469 /* 2470 * Initialize thread_map with comm names, 2471 * so we could print it out on output. 2472 */ 2473 if (stat_config.aggr_mode == AGGR_THREAD) { 2474 thread_map__read_comms(evsel_list->core.threads); 2475 if (target.system_wide) { 2476 if (runtime_stat_new(&stat_config, 2477 perf_thread_map__nr(evsel_list->core.threads))) { 2478 goto out; 2479 } 2480 } 2481 } 2482 2483 if (stat_config.aggr_mode == AGGR_NODE) 2484 cpu__setup_cpunode_map(); 2485 2486 if (stat_config.times && interval) 2487 interval_count = true; 2488 else if (stat_config.times && !interval) { 2489 pr_err("interval-count option should be used together with " 2490 "interval-print.\n"); 2491 parse_options_usage(stat_usage, stat_options, "interval-count", 0); 2492 parse_options_usage(stat_usage, stat_options, "I", 1); 2493 goto out; 2494 } 2495 2496 if (timeout && timeout < 100) { 2497 if (timeout < 10) { 2498 pr_err("timeout must be >= 10ms.\n"); 2499 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2500 goto out; 2501 } else 2502 pr_warning("timeout < 100ms. " 2503 "The overhead percentage could be high in some cases. " 2504 "Please proceed with caution.\n"); 2505 } 2506 if (timeout && interval) { 2507 pr_err("timeout option is not supported with interval-print.\n"); 2508 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2509 parse_options_usage(stat_usage, stat_options, "I", 1); 2510 goto out; 2511 } 2512 2513 if (evlist__alloc_stats(evsel_list, interval)) 2514 goto out; 2515 2516 if (perf_stat_init_aggr_mode()) 2517 goto out; 2518 2519 /* 2520 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless 2521 * while avoiding that older tools show confusing messages. 2522 * 2523 * However for pipe sessions we need to keep it zero, 2524 * because script's perf_evsel__check_attr is triggered 2525 * by attr->sample_type != 0, and we can't run it on 2526 * stat sessions. 2527 */ 2528 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); 2529 2530 /* 2531 * We dont want to block the signals - that would cause 2532 * child tasks to inherit that and Ctrl-C would not work. 2533 * What we want is for Ctrl-C to work in the exec()-ed 2534 * task, but being ignored by perf stat itself: 2535 */ 2536 atexit(sig_atexit); 2537 if (!forever) 2538 signal(SIGINT, skip_signal); 2539 signal(SIGCHLD, skip_signal); 2540 signal(SIGALRM, skip_signal); 2541 signal(SIGABRT, skip_signal); 2542 2543 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) 2544 goto out; 2545 2546 /* Enable ignoring missing threads when -p option is defined. */ 2547 evlist__first(evsel_list)->ignore_missing_thread = target.pid; 2548 status = 0; 2549 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { 2550 if (stat_config.run_count != 1 && verbose > 0) 2551 fprintf(output, "[ perf stat: executing run #%d ... ]\n", 2552 run_idx + 1); 2553 2554 if (run_idx != 0) 2555 evlist__reset_prev_raw_counts(evsel_list); 2556 2557 status = run_perf_stat(argc, argv, run_idx); 2558 if (forever && status != -1 && !interval) { 2559 print_counters(NULL, argc, argv); 2560 perf_stat__reset_stats(); 2561 } 2562 } 2563 2564 if (!forever && status != -1 && (!interval || stat_config.summary)) 2565 print_counters(NULL, argc, argv); 2566 2567 evlist__finalize_ctlfd(evsel_list); 2568 2569 if (STAT_RECORD) { 2570 /* 2571 * We synthesize the kernel mmap record just so that older tools 2572 * don't emit warnings about not being able to resolve symbols 2573 * due to /proc/sys/kernel/kptr_restrict settings and instead provide 2574 * a saner message about no samples being in the perf.data file. 2575 * 2576 * This also serves to suppress a warning about f_header.data.size == 0 2577 * in header.c at the moment 'perf stat record' gets introduced, which 2578 * is not really needed once we start adding the stat specific PERF_RECORD_ 2579 * records, but the need to suppress the kptr_restrict messages in older 2580 * tools remain -acme 2581 */ 2582 int fd = perf_data__fd(&perf_stat.data); 2583 2584 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, 2585 process_synthesized_event, 2586 &perf_stat.session->machines.host); 2587 if (err) { 2588 pr_warning("Couldn't synthesize the kernel mmap record, harmless, " 2589 "older tools may produce warnings about this file\n."); 2590 } 2591 2592 if (!interval) { 2593 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) 2594 pr_err("failed to write stat round event\n"); 2595 } 2596 2597 if (!perf_stat.data.is_pipe) { 2598 perf_stat.session->header.data_size += perf_stat.bytes_written; 2599 perf_session__write_header(perf_stat.session, evsel_list, fd, true); 2600 } 2601 2602 evlist__close(evsel_list); 2603 perf_session__delete(perf_stat.session); 2604 } 2605 2606 perf_stat__exit_aggr_mode(); 2607 evlist__free_stats(evsel_list); 2608 out: 2609 if (stat_config.iostat_run) 2610 iostat_release(evsel_list); 2611 2612 zfree(&stat_config.walltime_run); 2613 2614 if (smi_cost && smi_reset) 2615 sysfs__write_int(FREEZE_ON_SMI_PATH, 0); 2616 2617 evlist__delete(evsel_list); 2618 2619 metricgroup__rblist_exit(&stat_config.metric_events); 2620 runtime_stat_delete(&stat_config); 2621 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); 2622 2623 return status; 2624 } 2625