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 "asm/bug.h" 75 76 #include <linux/time64.h> 77 #include <linux/zalloc.h> 78 #include <api/fs/fs.h> 79 #include <errno.h> 80 #include <signal.h> 81 #include <stdlib.h> 82 #include <sys/prctl.h> 83 #include <inttypes.h> 84 #include <locale.h> 85 #include <math.h> 86 #include <sys/types.h> 87 #include <sys/stat.h> 88 #include <sys/wait.h> 89 #include <unistd.h> 90 #include <sys/time.h> 91 #include <sys/resource.h> 92 #include <linux/err.h> 93 94 #include <linux/ctype.h> 95 #include <perf/evlist.h> 96 97 #define DEFAULT_SEPARATOR " " 98 #define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi" 99 100 static void print_counters(struct timespec *ts, int argc, const char **argv); 101 102 /* Default events used for perf stat -T */ 103 static const char *transaction_attrs = { 104 "task-clock," 105 "{" 106 "instructions," 107 "cycles," 108 "cpu/cycles-t/," 109 "cpu/tx-start/," 110 "cpu/el-start/," 111 "cpu/cycles-ct/" 112 "}" 113 }; 114 115 /* More limited version when the CPU does not have all events. */ 116 static const char * transaction_limited_attrs = { 117 "task-clock," 118 "{" 119 "instructions," 120 "cycles," 121 "cpu/cycles-t/," 122 "cpu/tx-start/" 123 "}" 124 }; 125 126 static const char * topdown_attrs[] = { 127 "topdown-total-slots", 128 "topdown-slots-retired", 129 "topdown-recovery-bubbles", 130 "topdown-fetch-bubbles", 131 "topdown-slots-issued", 132 NULL, 133 }; 134 135 static const char *topdown_metric_attrs[] = { 136 "slots", 137 "topdown-retiring", 138 "topdown-bad-spec", 139 "topdown-fe-bound", 140 "topdown-be-bound", 141 NULL, 142 }; 143 144 static const char *topdown_metric_L2_attrs[] = { 145 "slots", 146 "topdown-retiring", 147 "topdown-bad-spec", 148 "topdown-fe-bound", 149 "topdown-be-bound", 150 "topdown-heavy-ops", 151 "topdown-br-mispredict", 152 "topdown-fetch-lat", 153 "topdown-mem-bound", 154 NULL, 155 }; 156 157 #define TOPDOWN_MAX_LEVEL 2 158 159 static const char *smi_cost_attrs = { 160 "{" 161 "msr/aperf/," 162 "msr/smi/," 163 "cycles" 164 "}" 165 }; 166 167 static struct evlist *evsel_list; 168 static bool all_counters_use_bpf = true; 169 170 static struct target target = { 171 .uid = UINT_MAX, 172 }; 173 174 #define METRIC_ONLY_LEN 20 175 176 static volatile pid_t child_pid = -1; 177 static int detailed_run = 0; 178 static bool transaction_run; 179 static bool topdown_run = false; 180 static bool smi_cost = false; 181 static bool smi_reset = false; 182 static int big_num_opt = -1; 183 static bool group = false; 184 static const char *pre_cmd = NULL; 185 static const char *post_cmd = NULL; 186 static bool sync_run = false; 187 static bool forever = false; 188 static bool force_metric_only = false; 189 static struct timespec ref_time; 190 static bool append_file; 191 static bool interval_count; 192 static const char *output_name; 193 static int output_fd; 194 static char *metrics; 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 __fallthrough; 666 case EVLIST_CTL_CMD_DISABLE: 667 if (interval) 668 process_interval(); 669 break; 670 case EVLIST_CTL_CMD_SNAPSHOT: 671 case EVLIST_CTL_CMD_ACK: 672 case EVLIST_CTL_CMD_UNSUPPORTED: 673 case EVLIST_CTL_CMD_EVLIST: 674 case EVLIST_CTL_CMD_STOP: 675 case EVLIST_CTL_CMD_PING: 676 default: 677 break; 678 } 679 } 680 } 681 682 static void compute_tts(struct timespec *time_start, struct timespec *time_stop, 683 int *time_to_sleep) 684 { 685 int tts = *time_to_sleep; 686 struct timespec time_diff; 687 688 diff_timespec(&time_diff, time_stop, time_start); 689 690 tts -= time_diff.tv_sec * MSEC_PER_SEC + 691 time_diff.tv_nsec / NSEC_PER_MSEC; 692 693 if (tts < 0) 694 tts = 0; 695 696 *time_to_sleep = tts; 697 } 698 699 static int dispatch_events(bool forks, int timeout, int interval, int *times) 700 { 701 int child_exited = 0, status = 0; 702 int time_to_sleep, sleep_time; 703 struct timespec time_start, time_stop; 704 705 if (interval) 706 sleep_time = interval; 707 else if (timeout) 708 sleep_time = timeout; 709 else 710 sleep_time = 1000; 711 712 time_to_sleep = sleep_time; 713 714 while (!done) { 715 if (forks) 716 child_exited = waitpid(child_pid, &status, WNOHANG); 717 else 718 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; 719 720 if (child_exited) 721 break; 722 723 clock_gettime(CLOCK_MONOTONIC, &time_start); 724 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ 725 if (timeout || handle_interval(interval, times)) 726 break; 727 time_to_sleep = sleep_time; 728 } else { /* fd revent */ 729 process_evlist(evsel_list, interval); 730 clock_gettime(CLOCK_MONOTONIC, &time_stop); 731 compute_tts(&time_start, &time_stop, &time_to_sleep); 732 } 733 } 734 735 return status; 736 } 737 738 enum counter_recovery { 739 COUNTER_SKIP, 740 COUNTER_RETRY, 741 COUNTER_FATAL, 742 }; 743 744 static enum counter_recovery stat_handle_error(struct evsel *counter) 745 { 746 char msg[BUFSIZ]; 747 /* 748 * PPC returns ENXIO for HW counters until 2.6.37 749 * (behavior changed with commit b0a873e). 750 */ 751 if (errno == EINVAL || errno == ENOSYS || 752 errno == ENOENT || errno == EOPNOTSUPP || 753 errno == ENXIO) { 754 if (verbose > 0) 755 ui__warning("%s event is not supported by the kernel.\n", 756 evsel__name(counter)); 757 counter->supported = false; 758 /* 759 * errored is a sticky flag that means one of the counter's 760 * cpu event had a problem and needs to be reexamined. 761 */ 762 counter->errored = true; 763 764 if ((evsel__leader(counter) != counter) || 765 !(counter->core.leader->nr_members > 1)) 766 return COUNTER_SKIP; 767 } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) { 768 if (verbose > 0) 769 ui__warning("%s\n", msg); 770 return COUNTER_RETRY; 771 } else if (target__has_per_thread(&target) && 772 evsel_list->core.threads && 773 evsel_list->core.threads->err_thread != -1) { 774 /* 775 * For global --per-thread case, skip current 776 * error thread. 777 */ 778 if (!thread_map__remove(evsel_list->core.threads, 779 evsel_list->core.threads->err_thread)) { 780 evsel_list->core.threads->err_thread = -1; 781 return COUNTER_RETRY; 782 } 783 } 784 785 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); 786 ui__error("%s\n", msg); 787 788 if (child_pid != -1) 789 kill(child_pid, SIGTERM); 790 return COUNTER_FATAL; 791 } 792 793 static int __run_perf_stat(int argc, const char **argv, int run_idx) 794 { 795 int interval = stat_config.interval; 796 int times = stat_config.times; 797 int timeout = stat_config.timeout; 798 char msg[BUFSIZ]; 799 unsigned long long t0, t1; 800 struct evsel *counter; 801 size_t l; 802 int status = 0; 803 const bool forks = (argc > 0); 804 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; 805 struct evlist_cpu_iterator evlist_cpu_itr; 806 struct affinity saved_affinity, *affinity = NULL; 807 int err; 808 bool second_pass = false; 809 810 if (forks) { 811 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { 812 perror("failed to prepare workload"); 813 return -1; 814 } 815 child_pid = evsel_list->workload.pid; 816 } 817 818 if (group) 819 evlist__set_leader(evsel_list); 820 821 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { 822 if (affinity__setup(&saved_affinity) < 0) 823 return -1; 824 affinity = &saved_affinity; 825 } 826 827 evlist__for_each_entry(evsel_list, counter) { 828 counter->reset_group = false; 829 if (bpf_counter__load(counter, &target)) 830 return -1; 831 if (!evsel__is_bpf(counter)) 832 all_counters_use_bpf = false; 833 } 834 835 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 836 counter = evlist_cpu_itr.evsel; 837 838 /* 839 * bperf calls evsel__open_per_cpu() in bperf__load(), so 840 * no need to call it again here. 841 */ 842 if (target.use_bpf) 843 break; 844 845 if (counter->reset_group || counter->errored) 846 continue; 847 if (evsel__is_bpf(counter)) 848 continue; 849 try_again: 850 if (create_perf_stat_counter(counter, &stat_config, &target, 851 evlist_cpu_itr.cpu_map_idx) < 0) { 852 853 /* 854 * Weak group failed. We cannot just undo this here 855 * because earlier CPUs might be in group mode, and the kernel 856 * doesn't support mixing group and non group reads. Defer 857 * it to later. 858 * Don't close here because we're in the wrong affinity. 859 */ 860 if ((errno == EINVAL || errno == EBADF) && 861 evsel__leader(counter) != counter && 862 counter->weak_group) { 863 evlist__reset_weak_group(evsel_list, counter, false); 864 assert(counter->reset_group); 865 second_pass = true; 866 continue; 867 } 868 869 switch (stat_handle_error(counter)) { 870 case COUNTER_FATAL: 871 return -1; 872 case COUNTER_RETRY: 873 goto try_again; 874 case COUNTER_SKIP: 875 continue; 876 default: 877 break; 878 } 879 880 } 881 counter->supported = true; 882 } 883 884 if (second_pass) { 885 /* 886 * Now redo all the weak group after closing them, 887 * and also close errored counters. 888 */ 889 890 /* First close errored or weak retry */ 891 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 892 counter = evlist_cpu_itr.evsel; 893 894 if (!counter->reset_group && !counter->errored) 895 continue; 896 897 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx); 898 } 899 /* Now reopen weak */ 900 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 901 counter = evlist_cpu_itr.evsel; 902 903 if (!counter->reset_group && !counter->errored) 904 continue; 905 if (!counter->reset_group) 906 continue; 907 try_again_reset: 908 pr_debug2("reopening weak %s\n", evsel__name(counter)); 909 if (create_perf_stat_counter(counter, &stat_config, &target, 910 evlist_cpu_itr.cpu_map_idx) < 0) { 911 912 switch (stat_handle_error(counter)) { 913 case COUNTER_FATAL: 914 return -1; 915 case COUNTER_RETRY: 916 goto try_again_reset; 917 case COUNTER_SKIP: 918 continue; 919 default: 920 break; 921 } 922 } 923 counter->supported = true; 924 } 925 } 926 affinity__cleanup(affinity); 927 928 evlist__for_each_entry(evsel_list, counter) { 929 if (!counter->supported) { 930 perf_evsel__free_fd(&counter->core); 931 continue; 932 } 933 934 l = strlen(counter->unit); 935 if (l > stat_config.unit_width) 936 stat_config.unit_width = l; 937 938 if (evsel__should_store_id(counter) && 939 evsel__store_ids(counter, evsel_list)) 940 return -1; 941 } 942 943 if (evlist__apply_filters(evsel_list, &counter)) { 944 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", 945 counter->filter, evsel__name(counter), errno, 946 str_error_r(errno, msg, sizeof(msg))); 947 return -1; 948 } 949 950 if (STAT_RECORD) { 951 int fd = perf_data__fd(&perf_stat.data); 952 953 if (is_pipe) { 954 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); 955 } else { 956 err = perf_session__write_header(perf_stat.session, evsel_list, 957 fd, false); 958 } 959 960 if (err < 0) 961 return err; 962 963 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, 964 process_synthesized_event, is_pipe); 965 if (err < 0) 966 return err; 967 } 968 969 err = enable_counters(); 970 if (err) 971 return -1; 972 973 /* Exec the command, if any */ 974 if (forks) 975 evlist__start_workload(evsel_list); 976 977 t0 = rdclock(); 978 clock_gettime(CLOCK_MONOTONIC, &ref_time); 979 980 if (forks) { 981 if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) 982 status = dispatch_events(forks, timeout, interval, ×); 983 if (child_pid != -1) { 984 if (timeout) 985 kill(child_pid, SIGTERM); 986 wait4(child_pid, &status, 0, &stat_config.ru_data); 987 } 988 989 if (workload_exec_errno) { 990 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); 991 pr_err("Workload failed: %s\n", emsg); 992 return -1; 993 } 994 995 if (WIFSIGNALED(status)) 996 psignal(WTERMSIG(status), argv[0]); 997 } else { 998 status = dispatch_events(forks, timeout, interval, ×); 999 } 1000 1001 disable_counters(); 1002 1003 t1 = rdclock(); 1004 1005 if (stat_config.walltime_run_table) 1006 stat_config.walltime_run[run_idx] = t1 - t0; 1007 1008 if (interval && stat_config.summary) { 1009 stat_config.interval = 0; 1010 stat_config.stop_read_counter = true; 1011 init_stats(&walltime_nsecs_stats); 1012 update_stats(&walltime_nsecs_stats, t1 - t0); 1013 1014 if (stat_config.aggr_mode == AGGR_GLOBAL) 1015 evlist__save_aggr_prev_raw_counts(evsel_list); 1016 1017 evlist__copy_prev_raw_counts(evsel_list); 1018 evlist__reset_prev_raw_counts(evsel_list); 1019 runtime_stat_reset(&stat_config); 1020 perf_stat__reset_shadow_per_stat(&rt_stat); 1021 } else { 1022 update_stats(&walltime_nsecs_stats, t1 - t0); 1023 update_rusage_stats(&ru_stats, &stat_config.ru_data); 1024 } 1025 1026 /* 1027 * Closing a group leader splits the group, and as we only disable 1028 * group leaders, results in remaining events becoming enabled. To 1029 * avoid arbitrary skew, we must read all counters before closing any 1030 * group leaders. 1031 */ 1032 read_counters(&(struct timespec) { .tv_nsec = t1-t0 }); 1033 1034 /* 1035 * We need to keep evsel_list alive, because it's processed 1036 * later the evsel_list will be closed after. 1037 */ 1038 if (!STAT_RECORD) 1039 evlist__close(evsel_list); 1040 1041 return WEXITSTATUS(status); 1042 } 1043 1044 static int run_perf_stat(int argc, const char **argv, int run_idx) 1045 { 1046 int ret; 1047 1048 if (pre_cmd) { 1049 ret = system(pre_cmd); 1050 if (ret) 1051 return ret; 1052 } 1053 1054 if (sync_run) 1055 sync(); 1056 1057 ret = __run_perf_stat(argc, argv, run_idx); 1058 if (ret) 1059 return ret; 1060 1061 if (post_cmd) { 1062 ret = system(post_cmd); 1063 if (ret) 1064 return ret; 1065 } 1066 1067 return ret; 1068 } 1069 1070 static void print_counters(struct timespec *ts, int argc, const char **argv) 1071 { 1072 /* Do not print anything if we record to the pipe. */ 1073 if (STAT_RECORD && perf_stat.data.is_pipe) 1074 return; 1075 if (stat_config.quiet) 1076 return; 1077 1078 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); 1079 } 1080 1081 static volatile int signr = -1; 1082 1083 static void skip_signal(int signo) 1084 { 1085 if ((child_pid == -1) || stat_config.interval) 1086 done = 1; 1087 1088 signr = signo; 1089 /* 1090 * render child_pid harmless 1091 * won't send SIGTERM to a random 1092 * process in case of race condition 1093 * and fast PID recycling 1094 */ 1095 child_pid = -1; 1096 } 1097 1098 static void sig_atexit(void) 1099 { 1100 sigset_t set, oset; 1101 1102 /* 1103 * avoid race condition with SIGCHLD handler 1104 * in skip_signal() which is modifying child_pid 1105 * goal is to avoid send SIGTERM to a random 1106 * process 1107 */ 1108 sigemptyset(&set); 1109 sigaddset(&set, SIGCHLD); 1110 sigprocmask(SIG_BLOCK, &set, &oset); 1111 1112 if (child_pid != -1) 1113 kill(child_pid, SIGTERM); 1114 1115 sigprocmask(SIG_SETMASK, &oset, NULL); 1116 1117 if (signr == -1) 1118 return; 1119 1120 signal(signr, SIG_DFL); 1121 kill(getpid(), signr); 1122 } 1123 1124 void perf_stat__set_big_num(int set) 1125 { 1126 stat_config.big_num = (set != 0); 1127 } 1128 1129 void perf_stat__set_no_csv_summary(int set) 1130 { 1131 stat_config.no_csv_summary = (set != 0); 1132 } 1133 1134 static int stat__set_big_num(const struct option *opt __maybe_unused, 1135 const char *s __maybe_unused, int unset) 1136 { 1137 big_num_opt = unset ? 0 : 1; 1138 perf_stat__set_big_num(!unset); 1139 return 0; 1140 } 1141 1142 static int enable_metric_only(const struct option *opt __maybe_unused, 1143 const char *s __maybe_unused, int unset) 1144 { 1145 force_metric_only = true; 1146 stat_config.metric_only = !unset; 1147 return 0; 1148 } 1149 1150 static int append_metric_groups(const struct option *opt __maybe_unused, 1151 const char *str, 1152 int unset __maybe_unused) 1153 { 1154 if (metrics) { 1155 char *tmp; 1156 1157 if (asprintf(&tmp, "%s,%s", metrics, str) < 0) 1158 return -ENOMEM; 1159 free(metrics); 1160 metrics = tmp; 1161 } else { 1162 metrics = strdup(str); 1163 if (!metrics) 1164 return -ENOMEM; 1165 } 1166 return 0; 1167 } 1168 1169 static int parse_control_option(const struct option *opt, 1170 const char *str, 1171 int unset __maybe_unused) 1172 { 1173 struct perf_stat_config *config = opt->value; 1174 1175 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); 1176 } 1177 1178 static int parse_stat_cgroups(const struct option *opt, 1179 const char *str, int unset) 1180 { 1181 if (stat_config.cgroup_list) { 1182 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 1183 return -1; 1184 } 1185 1186 return parse_cgroups(opt, str, unset); 1187 } 1188 1189 static int parse_hybrid_type(const struct option *opt, 1190 const char *str, 1191 int unset __maybe_unused) 1192 { 1193 struct evlist *evlist = *(struct evlist **)opt->value; 1194 1195 if (!list_empty(&evlist->core.entries)) { 1196 fprintf(stderr, "Must define cputype before events/metrics\n"); 1197 return -1; 1198 } 1199 1200 evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str); 1201 if (!evlist->hybrid_pmu_name) { 1202 fprintf(stderr, "--cputype %s is not supported!\n", str); 1203 return -1; 1204 } 1205 1206 return 0; 1207 } 1208 1209 static struct option stat_options[] = { 1210 OPT_BOOLEAN('T', "transaction", &transaction_run, 1211 "hardware transaction statistics"), 1212 OPT_CALLBACK('e', "event", &evsel_list, "event", 1213 "event selector. use 'perf list' to list available events", 1214 parse_events_option), 1215 OPT_CALLBACK(0, "filter", &evsel_list, "filter", 1216 "event filter", parse_filter), 1217 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, 1218 "child tasks do not inherit counters"), 1219 OPT_STRING('p', "pid", &target.pid, "pid", 1220 "stat events on existing process id"), 1221 OPT_STRING('t', "tid", &target.tid, "tid", 1222 "stat events on existing thread id"), 1223 #ifdef HAVE_BPF_SKEL 1224 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", 1225 "stat events on existing bpf program id"), 1226 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, 1227 "use bpf program to count events"), 1228 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", 1229 "path to perf_event_attr map"), 1230 #endif 1231 OPT_BOOLEAN('a', "all-cpus", &target.system_wide, 1232 "system-wide collection from all CPUs"), 1233 OPT_BOOLEAN('g', "group", &group, 1234 "put the counters into a counter group"), 1235 OPT_BOOLEAN(0, "scale", &stat_config.scale, 1236 "Use --no-scale to disable counter scaling for multiplexing"), 1237 OPT_INCR('v', "verbose", &verbose, 1238 "be more verbose (show counter open errors, etc)"), 1239 OPT_INTEGER('r', "repeat", &stat_config.run_count, 1240 "repeat command and print average + stddev (max: 100, forever: 0)"), 1241 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, 1242 "display details about each run (only with -r option)"), 1243 OPT_BOOLEAN('n', "null", &stat_config.null_run, 1244 "null run - dont start any counters"), 1245 OPT_INCR('d', "detailed", &detailed_run, 1246 "detailed run - start a lot of events"), 1247 OPT_BOOLEAN('S', "sync", &sync_run, 1248 "call sync() before starting a run"), 1249 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, 1250 "print large numbers with thousands\' separators", 1251 stat__set_big_num), 1252 OPT_STRING('C', "cpu", &target.cpu_list, "cpu", 1253 "list of cpus to monitor in system-wide"), 1254 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, 1255 "disable CPU count aggregation", AGGR_NONE), 1256 OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), 1257 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge, 1258 "Merge identical named hybrid events"), 1259 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", 1260 "print counts with custom separator"), 1261 OPT_BOOLEAN('j', "json-output", &stat_config.json_output, 1262 "print counts in JSON format"), 1263 OPT_CALLBACK('G', "cgroup", &evsel_list, "name", 1264 "monitor event in cgroup name only", parse_stat_cgroups), 1265 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", 1266 "expand events for each cgroup"), 1267 OPT_STRING('o', "output", &output_name, "file", "output file name"), 1268 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), 1269 OPT_INTEGER(0, "log-fd", &output_fd, 1270 "log output to fd, instead of stderr"), 1271 OPT_STRING(0, "pre", &pre_cmd, "command", 1272 "command to run prior to the measured command"), 1273 OPT_STRING(0, "post", &post_cmd, "command", 1274 "command to run after to the measured command"), 1275 OPT_UINTEGER('I', "interval-print", &stat_config.interval, 1276 "print counts at regular interval in ms " 1277 "(overhead is possible for values <= 100ms)"), 1278 OPT_INTEGER(0, "interval-count", &stat_config.times, 1279 "print counts for fixed number of times"), 1280 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, 1281 "clear screen in between new interval"), 1282 OPT_UINTEGER(0, "timeout", &stat_config.timeout, 1283 "stop workload and print counts after a timeout period in ms (>= 10ms)"), 1284 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, 1285 "aggregate counts per processor socket", AGGR_SOCKET), 1286 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, 1287 "aggregate counts per processor die", AGGR_DIE), 1288 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, 1289 "aggregate counts per physical processor core", AGGR_CORE), 1290 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, 1291 "aggregate counts per thread", AGGR_THREAD), 1292 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, 1293 "aggregate counts per numa node", AGGR_NODE), 1294 OPT_INTEGER('D', "delay", &stat_config.initial_delay, 1295 "ms to wait before starting measurement after program start (-1: start with events disabled)"), 1296 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, 1297 "Only print computed metrics. No raw values", enable_metric_only), 1298 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, 1299 "don't group metric events, impacts multiplexing"), 1300 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, 1301 "don't try to share events between metrics in a group"), 1302 OPT_BOOLEAN(0, "topdown", &topdown_run, 1303 "measure top-down statistics"), 1304 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, 1305 "Set the metrics level for the top-down statistics (0: max level)"), 1306 OPT_BOOLEAN(0, "smi-cost", &smi_cost, 1307 "measure SMI cost"), 1308 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", 1309 "monitor specified metrics or metric groups (separated by ,)", 1310 append_metric_groups), 1311 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, 1312 "Configure all used events to run in kernel space.", 1313 PARSE_OPT_EXCLUSIVE), 1314 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, 1315 "Configure all used events to run in user space.", 1316 PARSE_OPT_EXCLUSIVE), 1317 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, 1318 "Use with 'percore' event qualifier to show the event " 1319 "counts of one hardware thread by sum up total hardware " 1320 "threads of same physical core"), 1321 OPT_BOOLEAN(0, "summary", &stat_config.summary, 1322 "print summary for interval mode"), 1323 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, 1324 "don't print 'summary' for CSV summary output"), 1325 OPT_BOOLEAN(0, "quiet", &stat_config.quiet, 1326 "don't print output (useful with record)"), 1327 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", 1328 "Only enable events on applying cpu with this type " 1329 "for hybrid platform (e.g. core or atom)", 1330 parse_hybrid_type), 1331 #ifdef HAVE_LIBPFM 1332 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", 1333 "libpfm4 event selector. use 'perf list' to list available events", 1334 parse_libpfm_events_option), 1335 #endif 1336 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", 1337 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" 1338 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" 1339 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", 1340 parse_control_option), 1341 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", 1342 "measure I/O performance metrics provided by arch/platform", 1343 iostat_parse), 1344 OPT_END() 1345 }; 1346 1347 static const char *const aggr_mode__string[] = { 1348 [AGGR_CORE] = "core", 1349 [AGGR_DIE] = "die", 1350 [AGGR_GLOBAL] = "global", 1351 [AGGR_NODE] = "node", 1352 [AGGR_NONE] = "none", 1353 [AGGR_SOCKET] = "socket", 1354 [AGGR_THREAD] = "thread", 1355 [AGGR_UNSET] = "unset", 1356 }; 1357 1358 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, 1359 struct perf_cpu cpu) 1360 { 1361 return aggr_cpu_id__socket(cpu, /*data=*/NULL); 1362 } 1363 1364 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, 1365 struct perf_cpu cpu) 1366 { 1367 return aggr_cpu_id__die(cpu, /*data=*/NULL); 1368 } 1369 1370 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, 1371 struct perf_cpu cpu) 1372 { 1373 return aggr_cpu_id__core(cpu, /*data=*/NULL); 1374 } 1375 1376 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, 1377 struct perf_cpu cpu) 1378 { 1379 return aggr_cpu_id__node(cpu, /*data=*/NULL); 1380 } 1381 1382 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, 1383 aggr_get_id_t get_id, struct perf_cpu cpu) 1384 { 1385 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1386 1387 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) 1388 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); 1389 1390 id = config->cpus_aggr_map->map[cpu.cpu]; 1391 return id; 1392 } 1393 1394 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, 1395 struct perf_cpu cpu) 1396 { 1397 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); 1398 } 1399 1400 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, 1401 struct perf_cpu cpu) 1402 { 1403 return perf_stat__get_aggr(config, perf_stat__get_die, cpu); 1404 } 1405 1406 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, 1407 struct perf_cpu cpu) 1408 { 1409 return perf_stat__get_aggr(config, perf_stat__get_core, cpu); 1410 } 1411 1412 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, 1413 struct perf_cpu cpu) 1414 { 1415 return perf_stat__get_aggr(config, perf_stat__get_node, cpu); 1416 } 1417 1418 static bool term_percore_set(void) 1419 { 1420 struct evsel *counter; 1421 1422 evlist__for_each_entry(evsel_list, counter) { 1423 if (counter->percore) 1424 return true; 1425 } 1426 1427 return false; 1428 } 1429 1430 static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) 1431 { 1432 switch (aggr_mode) { 1433 case AGGR_SOCKET: 1434 return aggr_cpu_id__socket; 1435 case AGGR_DIE: 1436 return aggr_cpu_id__die; 1437 case AGGR_CORE: 1438 return aggr_cpu_id__core; 1439 case AGGR_NODE: 1440 return aggr_cpu_id__node; 1441 case AGGR_NONE: 1442 if (term_percore_set()) 1443 return aggr_cpu_id__core; 1444 1445 return NULL; 1446 case AGGR_GLOBAL: 1447 case AGGR_THREAD: 1448 case AGGR_UNSET: 1449 case AGGR_MAX: 1450 default: 1451 return NULL; 1452 } 1453 } 1454 1455 static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) 1456 { 1457 switch (aggr_mode) { 1458 case AGGR_SOCKET: 1459 return perf_stat__get_socket_cached; 1460 case AGGR_DIE: 1461 return perf_stat__get_die_cached; 1462 case AGGR_CORE: 1463 return perf_stat__get_core_cached; 1464 case AGGR_NODE: 1465 return perf_stat__get_node_cached; 1466 case AGGR_NONE: 1467 if (term_percore_set()) { 1468 return perf_stat__get_core_cached; 1469 } 1470 return NULL; 1471 case AGGR_GLOBAL: 1472 case AGGR_THREAD: 1473 case AGGR_UNSET: 1474 case AGGR_MAX: 1475 default: 1476 return NULL; 1477 } 1478 } 1479 1480 static int perf_stat_init_aggr_mode(void) 1481 { 1482 int nr; 1483 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); 1484 1485 if (get_id) { 1486 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1487 get_id, /*data=*/NULL); 1488 if (!stat_config.aggr_map) { 1489 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1490 return -1; 1491 } 1492 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); 1493 } 1494 1495 /* 1496 * The evsel_list->cpus is the base we operate on, 1497 * taking the highest cpu number to be the size of 1498 * the aggregation translate cpumap. 1499 */ 1500 if (evsel_list->core.user_requested_cpus) 1501 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu; 1502 else 1503 nr = 0; 1504 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); 1505 return stat_config.cpus_aggr_map ? 0 : -ENOMEM; 1506 } 1507 1508 static void cpu_aggr_map__delete(struct cpu_aggr_map *map) 1509 { 1510 if (map) { 1511 WARN_ONCE(refcount_read(&map->refcnt) != 0, 1512 "cpu_aggr_map refcnt unbalanced\n"); 1513 free(map); 1514 } 1515 } 1516 1517 static void cpu_aggr_map__put(struct cpu_aggr_map *map) 1518 { 1519 if (map && refcount_dec_and_test(&map->refcnt)) 1520 cpu_aggr_map__delete(map); 1521 } 1522 1523 static void perf_stat__exit_aggr_mode(void) 1524 { 1525 cpu_aggr_map__put(stat_config.aggr_map); 1526 cpu_aggr_map__put(stat_config.cpus_aggr_map); 1527 stat_config.aggr_map = NULL; 1528 stat_config.cpus_aggr_map = NULL; 1529 } 1530 1531 static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data) 1532 { 1533 struct perf_env *env = data; 1534 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1535 1536 if (cpu.cpu != -1) 1537 id.socket = env->cpu[cpu.cpu].socket_id; 1538 1539 return id; 1540 } 1541 1542 static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) 1543 { 1544 struct perf_env *env = data; 1545 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1546 1547 if (cpu.cpu != -1) { 1548 /* 1549 * die_id is relative to socket, so start 1550 * with the socket ID and then add die to 1551 * make a unique ID. 1552 */ 1553 id.socket = env->cpu[cpu.cpu].socket_id; 1554 id.die = env->cpu[cpu.cpu].die_id; 1555 } 1556 1557 return id; 1558 } 1559 1560 static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) 1561 { 1562 struct perf_env *env = data; 1563 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1564 1565 if (cpu.cpu != -1) { 1566 /* 1567 * core_id is relative to socket and die, 1568 * we need a global id. So we set 1569 * socket, die id and core id 1570 */ 1571 id.socket = env->cpu[cpu.cpu].socket_id; 1572 id.die = env->cpu[cpu.cpu].die_id; 1573 id.core = env->cpu[cpu.cpu].core_id; 1574 } 1575 1576 return id; 1577 } 1578 1579 static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) 1580 { 1581 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1582 1583 id.node = perf_env__numa_node(data, cpu); 1584 return id; 1585 } 1586 1587 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, 1588 struct perf_cpu cpu) 1589 { 1590 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1591 } 1592 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, 1593 struct perf_cpu cpu) 1594 { 1595 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1596 } 1597 1598 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, 1599 struct perf_cpu cpu) 1600 { 1601 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1602 } 1603 1604 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, 1605 struct perf_cpu cpu) 1606 { 1607 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1608 } 1609 1610 static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) 1611 { 1612 switch (aggr_mode) { 1613 case AGGR_SOCKET: 1614 return perf_env__get_socket_aggr_by_cpu; 1615 case AGGR_DIE: 1616 return perf_env__get_die_aggr_by_cpu; 1617 case AGGR_CORE: 1618 return perf_env__get_core_aggr_by_cpu; 1619 case AGGR_NODE: 1620 return perf_env__get_node_aggr_by_cpu; 1621 case AGGR_NONE: 1622 case AGGR_GLOBAL: 1623 case AGGR_THREAD: 1624 case AGGR_UNSET: 1625 case AGGR_MAX: 1626 default: 1627 return NULL; 1628 } 1629 } 1630 1631 static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) 1632 { 1633 switch (aggr_mode) { 1634 case AGGR_SOCKET: 1635 return perf_stat__get_socket_file; 1636 case AGGR_DIE: 1637 return perf_stat__get_die_file; 1638 case AGGR_CORE: 1639 return perf_stat__get_core_file; 1640 case AGGR_NODE: 1641 return perf_stat__get_node_file; 1642 case AGGR_NONE: 1643 case AGGR_GLOBAL: 1644 case AGGR_THREAD: 1645 case AGGR_UNSET: 1646 case AGGR_MAX: 1647 default: 1648 return NULL; 1649 } 1650 } 1651 1652 static int perf_stat_init_aggr_mode_file(struct perf_stat *st) 1653 { 1654 struct perf_env *env = &st->session->header.env; 1655 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); 1656 1657 if (!get_id) 1658 return 0; 1659 1660 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, get_id, env); 1661 if (!stat_config.aggr_map) { 1662 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1663 return -1; 1664 } 1665 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode); 1666 return 0; 1667 } 1668 1669 /* 1670 * Add default attributes, if there were no attributes specified or 1671 * if -d/--detailed, -d -d or -d -d -d is used: 1672 */ 1673 static int add_default_attributes(void) 1674 { 1675 int err; 1676 struct perf_event_attr default_attrs0[] = { 1677 1678 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, 1679 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, 1680 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, 1681 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, 1682 1683 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, 1684 }; 1685 struct perf_event_attr frontend_attrs[] = { 1686 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, 1687 }; 1688 struct perf_event_attr backend_attrs[] = { 1689 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, 1690 }; 1691 struct perf_event_attr default_attrs1[] = { 1692 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, 1693 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, 1694 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, 1695 1696 }; 1697 1698 /* 1699 * Detailed stats (-d), covering the L1 and last level data caches: 1700 */ 1701 struct perf_event_attr detailed_attrs[] = { 1702 1703 { .type = PERF_TYPE_HW_CACHE, 1704 .config = 1705 PERF_COUNT_HW_CACHE_L1D << 0 | 1706 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1707 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1708 1709 { .type = PERF_TYPE_HW_CACHE, 1710 .config = 1711 PERF_COUNT_HW_CACHE_L1D << 0 | 1712 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1713 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1714 1715 { .type = PERF_TYPE_HW_CACHE, 1716 .config = 1717 PERF_COUNT_HW_CACHE_LL << 0 | 1718 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1719 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1720 1721 { .type = PERF_TYPE_HW_CACHE, 1722 .config = 1723 PERF_COUNT_HW_CACHE_LL << 0 | 1724 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1725 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1726 }; 1727 1728 /* 1729 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: 1730 */ 1731 struct perf_event_attr very_detailed_attrs[] = { 1732 1733 { .type = PERF_TYPE_HW_CACHE, 1734 .config = 1735 PERF_COUNT_HW_CACHE_L1I << 0 | 1736 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1737 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1738 1739 { .type = PERF_TYPE_HW_CACHE, 1740 .config = 1741 PERF_COUNT_HW_CACHE_L1I << 0 | 1742 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1743 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1744 1745 { .type = PERF_TYPE_HW_CACHE, 1746 .config = 1747 PERF_COUNT_HW_CACHE_DTLB << 0 | 1748 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1749 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1750 1751 { .type = PERF_TYPE_HW_CACHE, 1752 .config = 1753 PERF_COUNT_HW_CACHE_DTLB << 0 | 1754 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1755 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1756 1757 { .type = PERF_TYPE_HW_CACHE, 1758 .config = 1759 PERF_COUNT_HW_CACHE_ITLB << 0 | 1760 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1761 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1762 1763 { .type = PERF_TYPE_HW_CACHE, 1764 .config = 1765 PERF_COUNT_HW_CACHE_ITLB << 0 | 1766 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1767 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1768 1769 }; 1770 1771 /* 1772 * Very, very detailed stats (-d -d -d), adding prefetch events: 1773 */ 1774 struct perf_event_attr very_very_detailed_attrs[] = { 1775 1776 { .type = PERF_TYPE_HW_CACHE, 1777 .config = 1778 PERF_COUNT_HW_CACHE_L1D << 0 | 1779 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 1780 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1781 1782 { .type = PERF_TYPE_HW_CACHE, 1783 .config = 1784 PERF_COUNT_HW_CACHE_L1D << 0 | 1785 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 1786 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1787 }; 1788 1789 struct perf_event_attr default_null_attrs[] = {}; 1790 1791 /* Set attrs if no event is selected and !null_run: */ 1792 if (stat_config.null_run) 1793 return 0; 1794 1795 if (transaction_run) { 1796 struct parse_events_error errinfo; 1797 /* Handle -T as -M transaction. Once platform specific metrics 1798 * support has been added to the json files, all architectures 1799 * will use this approach. To determine transaction support 1800 * on an architecture test for such a metric name. 1801 */ 1802 if (metricgroup__has_metric("transaction")) { 1803 return metricgroup__parse_groups(evsel_list, "transaction", 1804 stat_config.metric_no_group, 1805 stat_config.metric_no_merge, 1806 stat_config.user_requested_cpu_list, 1807 stat_config.system_wide, 1808 &stat_config.metric_events); 1809 } 1810 1811 parse_events_error__init(&errinfo); 1812 if (pmu_have_event("cpu", "cycles-ct") && 1813 pmu_have_event("cpu", "el-start")) 1814 err = parse_events(evsel_list, transaction_attrs, 1815 &errinfo); 1816 else 1817 err = parse_events(evsel_list, 1818 transaction_limited_attrs, 1819 &errinfo); 1820 if (err) { 1821 fprintf(stderr, "Cannot set up transaction events\n"); 1822 parse_events_error__print(&errinfo, transaction_attrs); 1823 } 1824 parse_events_error__exit(&errinfo); 1825 return err ? -1 : 0; 1826 } 1827 1828 if (smi_cost) { 1829 struct parse_events_error errinfo; 1830 int smi; 1831 1832 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { 1833 fprintf(stderr, "freeze_on_smi is not supported.\n"); 1834 return -1; 1835 } 1836 1837 if (!smi) { 1838 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { 1839 fprintf(stderr, "Failed to set freeze_on_smi.\n"); 1840 return -1; 1841 } 1842 smi_reset = true; 1843 } 1844 1845 if (!pmu_have_event("msr", "aperf") || 1846 !pmu_have_event("msr", "smi")) { 1847 fprintf(stderr, "To measure SMI cost, it needs " 1848 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); 1849 return -1; 1850 } 1851 if (!force_metric_only) 1852 stat_config.metric_only = true; 1853 1854 parse_events_error__init(&errinfo); 1855 err = parse_events(evsel_list, smi_cost_attrs, &errinfo); 1856 if (err) { 1857 parse_events_error__print(&errinfo, smi_cost_attrs); 1858 fprintf(stderr, "Cannot set up SMI cost events\n"); 1859 } 1860 parse_events_error__exit(&errinfo); 1861 return err ? -1 : 0; 1862 } 1863 1864 if (topdown_run) { 1865 const char **metric_attrs = topdown_metric_attrs; 1866 unsigned int max_level = 1; 1867 char *str = NULL; 1868 bool warn = false; 1869 const char *pmu_name = arch_get_topdown_pmu_name(evsel_list, true); 1870 1871 if (!force_metric_only) 1872 stat_config.metric_only = true; 1873 1874 if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) { 1875 metric_attrs = topdown_metric_L2_attrs; 1876 max_level = 2; 1877 } 1878 1879 if (stat_config.topdown_level > max_level) { 1880 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); 1881 return -1; 1882 } else if (!stat_config.topdown_level) 1883 stat_config.topdown_level = max_level; 1884 1885 if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) { 1886 pr_err("Out of memory\n"); 1887 return -1; 1888 } 1889 1890 if (metric_attrs[0] && str) { 1891 if (!stat_config.interval && !stat_config.metric_only) { 1892 fprintf(stat_config.output, 1893 "Topdown accuracy may decrease when measuring long periods.\n" 1894 "Please print the result regularly, e.g. -I1000\n"); 1895 } 1896 goto setup_metrics; 1897 } 1898 1899 zfree(&str); 1900 1901 if (stat_config.aggr_mode != AGGR_GLOBAL && 1902 stat_config.aggr_mode != AGGR_CORE) { 1903 pr_err("top down event configuration requires --per-core mode\n"); 1904 return -1; 1905 } 1906 stat_config.aggr_mode = AGGR_CORE; 1907 if (nr_cgroups || !target__has_cpu(&target)) { 1908 pr_err("top down event configuration requires system-wide mode (-a)\n"); 1909 return -1; 1910 } 1911 1912 if (topdown_filter_events(topdown_attrs, &str, 1913 arch_topdown_check_group(&warn), 1914 pmu_name) < 0) { 1915 pr_err("Out of memory\n"); 1916 return -1; 1917 } 1918 1919 if (topdown_attrs[0] && str) { 1920 struct parse_events_error errinfo; 1921 if (warn) 1922 arch_topdown_group_warn(); 1923 setup_metrics: 1924 parse_events_error__init(&errinfo); 1925 err = parse_events(evsel_list, str, &errinfo); 1926 if (err) { 1927 fprintf(stderr, 1928 "Cannot set up top down events %s: %d\n", 1929 str, err); 1930 parse_events_error__print(&errinfo, str); 1931 parse_events_error__exit(&errinfo); 1932 free(str); 1933 return -1; 1934 } 1935 parse_events_error__exit(&errinfo); 1936 } else { 1937 fprintf(stderr, "System does not support topdown\n"); 1938 return -1; 1939 } 1940 free(str); 1941 } 1942 1943 if (!stat_config.topdown_level) 1944 stat_config.topdown_level = TOPDOWN_MAX_LEVEL; 1945 1946 if (!evsel_list->core.nr_entries) { 1947 if (target__has_cpu(&target)) 1948 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; 1949 1950 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) 1951 return -1; 1952 if (pmu_have_event("cpu", "stalled-cycles-frontend")) { 1953 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) 1954 return -1; 1955 } 1956 if (pmu_have_event("cpu", "stalled-cycles-backend")) { 1957 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) 1958 return -1; 1959 } 1960 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) 1961 return -1; 1962 /* Platform specific attrs */ 1963 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0) 1964 return -1; 1965 } 1966 1967 /* Detailed events get appended to the event list: */ 1968 1969 if (detailed_run < 1) 1970 return 0; 1971 1972 /* Append detailed run extra attributes: */ 1973 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) 1974 return -1; 1975 1976 if (detailed_run < 2) 1977 return 0; 1978 1979 /* Append very detailed run extra attributes: */ 1980 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) 1981 return -1; 1982 1983 if (detailed_run < 3) 1984 return 0; 1985 1986 /* Append very, very detailed run extra attributes: */ 1987 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); 1988 } 1989 1990 static const char * const stat_record_usage[] = { 1991 "perf stat record [<options>]", 1992 NULL, 1993 }; 1994 1995 static void init_features(struct perf_session *session) 1996 { 1997 int feat; 1998 1999 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) 2000 perf_header__set_feat(&session->header, feat); 2001 2002 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); 2003 perf_header__clear_feat(&session->header, HEADER_BUILD_ID); 2004 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); 2005 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); 2006 perf_header__clear_feat(&session->header, HEADER_AUXTRACE); 2007 } 2008 2009 static int __cmd_record(int argc, const char **argv) 2010 { 2011 struct perf_session *session; 2012 struct perf_data *data = &perf_stat.data; 2013 2014 argc = parse_options(argc, argv, stat_options, stat_record_usage, 2015 PARSE_OPT_STOP_AT_NON_OPTION); 2016 2017 if (output_name) 2018 data->path = output_name; 2019 2020 if (stat_config.run_count != 1 || forever) { 2021 pr_err("Cannot use -r option with perf stat record.\n"); 2022 return -1; 2023 } 2024 2025 session = perf_session__new(data, NULL); 2026 if (IS_ERR(session)) { 2027 pr_err("Perf session creation failed\n"); 2028 return PTR_ERR(session); 2029 } 2030 2031 init_features(session); 2032 2033 session->evlist = evsel_list; 2034 perf_stat.session = session; 2035 perf_stat.record = true; 2036 return argc; 2037 } 2038 2039 static int process_stat_round_event(struct perf_session *session, 2040 union perf_event *event) 2041 { 2042 struct perf_record_stat_round *stat_round = &event->stat_round; 2043 struct evsel *counter; 2044 struct timespec tsh, *ts = NULL; 2045 const char **argv = session->header.env.cmdline_argv; 2046 int argc = session->header.env.nr_cmdline; 2047 2048 evlist__for_each_entry(evsel_list, counter) 2049 perf_stat_process_counter(&stat_config, counter); 2050 2051 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) 2052 update_stats(&walltime_nsecs_stats, stat_round->time); 2053 2054 if (stat_config.interval && stat_round->time) { 2055 tsh.tv_sec = stat_round->time / NSEC_PER_SEC; 2056 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; 2057 ts = &tsh; 2058 } 2059 2060 print_counters(ts, argc, argv); 2061 return 0; 2062 } 2063 2064 static 2065 int process_stat_config_event(struct perf_session *session, 2066 union perf_event *event) 2067 { 2068 struct perf_tool *tool = session->tool; 2069 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2070 2071 perf_event__read_stat_config(&stat_config, &event->stat_config); 2072 2073 if (perf_cpu_map__empty(st->cpus)) { 2074 if (st->aggr_mode != AGGR_UNSET) 2075 pr_warning("warning: processing task data, aggregation mode not set\n"); 2076 return 0; 2077 } 2078 2079 if (st->aggr_mode != AGGR_UNSET) 2080 stat_config.aggr_mode = st->aggr_mode; 2081 2082 if (perf_stat.data.is_pipe) 2083 perf_stat_init_aggr_mode(); 2084 else 2085 perf_stat_init_aggr_mode_file(st); 2086 2087 return 0; 2088 } 2089 2090 static int set_maps(struct perf_stat *st) 2091 { 2092 if (!st->cpus || !st->threads) 2093 return 0; 2094 2095 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) 2096 return -EINVAL; 2097 2098 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); 2099 2100 if (evlist__alloc_stats(evsel_list, true)) 2101 return -ENOMEM; 2102 2103 st->maps_allocated = true; 2104 return 0; 2105 } 2106 2107 static 2108 int process_thread_map_event(struct perf_session *session, 2109 union perf_event *event) 2110 { 2111 struct perf_tool *tool = session->tool; 2112 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2113 2114 if (st->threads) { 2115 pr_warning("Extra thread map event, ignoring.\n"); 2116 return 0; 2117 } 2118 2119 st->threads = thread_map__new_event(&event->thread_map); 2120 if (!st->threads) 2121 return -ENOMEM; 2122 2123 return set_maps(st); 2124 } 2125 2126 static 2127 int process_cpu_map_event(struct perf_session *session, 2128 union perf_event *event) 2129 { 2130 struct perf_tool *tool = session->tool; 2131 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2132 struct perf_cpu_map *cpus; 2133 2134 if (st->cpus) { 2135 pr_warning("Extra cpu map event, ignoring.\n"); 2136 return 0; 2137 } 2138 2139 cpus = cpu_map__new_data(&event->cpu_map.data); 2140 if (!cpus) 2141 return -ENOMEM; 2142 2143 st->cpus = cpus; 2144 return set_maps(st); 2145 } 2146 2147 static const char * const stat_report_usage[] = { 2148 "perf stat report [<options>]", 2149 NULL, 2150 }; 2151 2152 static struct perf_stat perf_stat = { 2153 .tool = { 2154 .attr = perf_event__process_attr, 2155 .event_update = perf_event__process_event_update, 2156 .thread_map = process_thread_map_event, 2157 .cpu_map = process_cpu_map_event, 2158 .stat_config = process_stat_config_event, 2159 .stat = perf_event__process_stat_event, 2160 .stat_round = process_stat_round_event, 2161 }, 2162 .aggr_mode = AGGR_UNSET, 2163 }; 2164 2165 static int __cmd_report(int argc, const char **argv) 2166 { 2167 struct perf_session *session; 2168 const struct option options[] = { 2169 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2170 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, 2171 "aggregate counts per processor socket", AGGR_SOCKET), 2172 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, 2173 "aggregate counts per processor die", AGGR_DIE), 2174 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, 2175 "aggregate counts per physical processor core", AGGR_CORE), 2176 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, 2177 "aggregate counts per numa node", AGGR_NODE), 2178 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, 2179 "disable CPU count aggregation", AGGR_NONE), 2180 OPT_END() 2181 }; 2182 struct stat st; 2183 int ret; 2184 2185 argc = parse_options(argc, argv, options, stat_report_usage, 0); 2186 2187 if (!input_name || !strlen(input_name)) { 2188 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 2189 input_name = "-"; 2190 else 2191 input_name = "perf.data"; 2192 } 2193 2194 perf_stat__init_shadow_stats(); 2195 2196 perf_stat.data.path = input_name; 2197 perf_stat.data.mode = PERF_DATA_MODE_READ; 2198 2199 session = perf_session__new(&perf_stat.data, &perf_stat.tool); 2200 if (IS_ERR(session)) 2201 return PTR_ERR(session); 2202 2203 perf_stat.session = session; 2204 stat_config.output = stderr; 2205 evsel_list = session->evlist; 2206 2207 ret = perf_session__process_events(session); 2208 if (ret) 2209 return ret; 2210 2211 perf_session__delete(session); 2212 return 0; 2213 } 2214 2215 static void setup_system_wide(int forks) 2216 { 2217 /* 2218 * Make system wide (-a) the default target if 2219 * no target was specified and one of following 2220 * conditions is met: 2221 * 2222 * - there's no workload specified 2223 * - there is workload specified but all requested 2224 * events are system wide events 2225 */ 2226 if (!target__none(&target)) 2227 return; 2228 2229 if (!forks) 2230 target.system_wide = true; 2231 else { 2232 struct evsel *counter; 2233 2234 evlist__for_each_entry(evsel_list, counter) { 2235 if (!counter->core.requires_cpu && 2236 strcmp(counter->name, "duration_time")) { 2237 return; 2238 } 2239 } 2240 2241 if (evsel_list->core.nr_entries) 2242 target.system_wide = true; 2243 } 2244 } 2245 2246 int cmd_stat(int argc, const char **argv) 2247 { 2248 const char * const stat_usage[] = { 2249 "perf stat [<options>] [<command>]", 2250 NULL 2251 }; 2252 int status = -EINVAL, run_idx, err; 2253 const char *mode; 2254 FILE *output = stderr; 2255 unsigned int interval, timeout; 2256 const char * const stat_subcommands[] = { "record", "report" }; 2257 char errbuf[BUFSIZ]; 2258 2259 setlocale(LC_ALL, ""); 2260 2261 evsel_list = evlist__new(); 2262 if (evsel_list == NULL) 2263 return -ENOMEM; 2264 2265 parse_events__shrink_config_terms(); 2266 2267 /* String-parsing callback-based options would segfault when negated */ 2268 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); 2269 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); 2270 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); 2271 2272 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, 2273 (const char **) stat_usage, 2274 PARSE_OPT_STOP_AT_NON_OPTION); 2275 2276 if (stat_config.csv_sep) { 2277 stat_config.csv_output = true; 2278 if (!strcmp(stat_config.csv_sep, "\\t")) 2279 stat_config.csv_sep = "\t"; 2280 } else 2281 stat_config.csv_sep = DEFAULT_SEPARATOR; 2282 2283 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { 2284 argc = __cmd_record(argc, argv); 2285 if (argc < 0) 2286 return -1; 2287 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2288 return __cmd_report(argc, argv); 2289 2290 interval = stat_config.interval; 2291 timeout = stat_config.timeout; 2292 2293 /* 2294 * For record command the -o is already taken care of. 2295 */ 2296 if (!STAT_RECORD && output_name && strcmp(output_name, "-")) 2297 output = NULL; 2298 2299 if (output_name && output_fd) { 2300 fprintf(stderr, "cannot use both --output and --log-fd\n"); 2301 parse_options_usage(stat_usage, stat_options, "o", 1); 2302 parse_options_usage(NULL, stat_options, "log-fd", 0); 2303 goto out; 2304 } 2305 2306 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { 2307 fprintf(stderr, "--metric-only is not supported with --per-thread\n"); 2308 goto out; 2309 } 2310 2311 if (stat_config.metric_only && stat_config.run_count > 1) { 2312 fprintf(stderr, "--metric-only is not supported with -r\n"); 2313 goto out; 2314 } 2315 2316 if (stat_config.walltime_run_table && stat_config.run_count <= 1) { 2317 fprintf(stderr, "--table is only supported with -r\n"); 2318 parse_options_usage(stat_usage, stat_options, "r", 1); 2319 parse_options_usage(NULL, stat_options, "table", 0); 2320 goto out; 2321 } 2322 2323 if (output_fd < 0) { 2324 fprintf(stderr, "argument to --log-fd must be a > 0\n"); 2325 parse_options_usage(stat_usage, stat_options, "log-fd", 0); 2326 goto out; 2327 } 2328 2329 if (!output && !stat_config.quiet) { 2330 struct timespec tm; 2331 mode = append_file ? "a" : "w"; 2332 2333 output = fopen(output_name, mode); 2334 if (!output) { 2335 perror("failed to create output file"); 2336 return -1; 2337 } 2338 clock_gettime(CLOCK_REALTIME, &tm); 2339 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); 2340 } else if (output_fd > 0) { 2341 mode = append_file ? "a" : "w"; 2342 output = fdopen(output_fd, mode); 2343 if (!output) { 2344 perror("Failed opening logfd"); 2345 return -errno; 2346 } 2347 } 2348 2349 stat_config.output = output; 2350 2351 /* 2352 * let the spreadsheet do the pretty-printing 2353 */ 2354 if (stat_config.csv_output) { 2355 /* User explicitly passed -B? */ 2356 if (big_num_opt == 1) { 2357 fprintf(stderr, "-B option not supported with -x\n"); 2358 parse_options_usage(stat_usage, stat_options, "B", 1); 2359 parse_options_usage(NULL, stat_options, "x", 1); 2360 goto out; 2361 } else /* Nope, so disable big number formatting */ 2362 stat_config.big_num = false; 2363 } else if (big_num_opt == 0) /* User passed --no-big-num */ 2364 stat_config.big_num = false; 2365 2366 err = target__validate(&target); 2367 if (err) { 2368 target__strerror(&target, err, errbuf, BUFSIZ); 2369 pr_warning("%s\n", errbuf); 2370 } 2371 2372 setup_system_wide(argc); 2373 2374 /* 2375 * Display user/system times only for single 2376 * run and when there's specified tracee. 2377 */ 2378 if ((stat_config.run_count == 1) && target__none(&target)) 2379 stat_config.ru_display = true; 2380 2381 if (stat_config.run_count < 0) { 2382 pr_err("Run count must be a positive number\n"); 2383 parse_options_usage(stat_usage, stat_options, "r", 1); 2384 goto out; 2385 } else if (stat_config.run_count == 0) { 2386 forever = true; 2387 stat_config.run_count = 1; 2388 } 2389 2390 if (stat_config.walltime_run_table) { 2391 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); 2392 if (!stat_config.walltime_run) { 2393 pr_err("failed to setup -r option"); 2394 goto out; 2395 } 2396 } 2397 2398 if ((stat_config.aggr_mode == AGGR_THREAD) && 2399 !target__has_task(&target)) { 2400 if (!target.system_wide || target.cpu_list) { 2401 fprintf(stderr, "The --per-thread option is only " 2402 "available when monitoring via -p -t -a " 2403 "options or only --per-thread.\n"); 2404 parse_options_usage(NULL, stat_options, "p", 1); 2405 parse_options_usage(NULL, stat_options, "t", 1); 2406 goto out; 2407 } 2408 } 2409 2410 /* 2411 * no_aggr, cgroup are for system-wide only 2412 * --per-thread is aggregated per thread, we dont mix it with cpu mode 2413 */ 2414 if (((stat_config.aggr_mode != AGGR_GLOBAL && 2415 stat_config.aggr_mode != AGGR_THREAD) || 2416 (nr_cgroups || stat_config.cgroup_list)) && 2417 !target__has_cpu(&target)) { 2418 fprintf(stderr, "both cgroup and no-aggregation " 2419 "modes only available in system-wide mode\n"); 2420 2421 parse_options_usage(stat_usage, stat_options, "G", 1); 2422 parse_options_usage(NULL, stat_options, "A", 1); 2423 parse_options_usage(NULL, stat_options, "a", 1); 2424 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2425 goto out; 2426 } 2427 2428 if (stat_config.iostat_run) { 2429 status = iostat_prepare(evsel_list, &stat_config); 2430 if (status) 2431 goto out; 2432 if (iostat_mode == IOSTAT_LIST) { 2433 iostat_list(evsel_list, &stat_config); 2434 goto out; 2435 } else if (verbose) 2436 iostat_list(evsel_list, &stat_config); 2437 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) 2438 target.system_wide = true; 2439 } 2440 2441 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) 2442 target.per_thread = true; 2443 2444 stat_config.system_wide = target.system_wide; 2445 if (target.cpu_list) { 2446 stat_config.user_requested_cpu_list = strdup(target.cpu_list); 2447 if (!stat_config.user_requested_cpu_list) { 2448 status = -ENOMEM; 2449 goto out; 2450 } 2451 } 2452 2453 /* 2454 * Metric parsing needs to be delayed as metrics may optimize events 2455 * knowing the target is system-wide. 2456 */ 2457 if (metrics) { 2458 metricgroup__parse_groups(evsel_list, metrics, 2459 stat_config.metric_no_group, 2460 stat_config.metric_no_merge, 2461 stat_config.user_requested_cpu_list, 2462 stat_config.system_wide, 2463 &stat_config.metric_events); 2464 zfree(&metrics); 2465 } 2466 perf_stat__collect_metric_expr(evsel_list); 2467 perf_stat__init_shadow_stats(); 2468 2469 if (add_default_attributes()) 2470 goto out; 2471 2472 if (stat_config.cgroup_list) { 2473 if (nr_cgroups > 0) { 2474 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 2475 parse_options_usage(stat_usage, stat_options, "G", 1); 2476 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2477 goto out; 2478 } 2479 2480 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, 2481 &stat_config.metric_events, true) < 0) { 2482 parse_options_usage(stat_usage, stat_options, 2483 "for-each-cgroup", 0); 2484 goto out; 2485 } 2486 } 2487 2488 if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) { 2489 pr_err("failed to use cpu list %s\n", target.cpu_list); 2490 goto out; 2491 } 2492 2493 target.hybrid = perf_pmu__has_hybrid(); 2494 if (evlist__create_maps(evsel_list, &target) < 0) { 2495 if (target__has_task(&target)) { 2496 pr_err("Problems finding threads of monitor\n"); 2497 parse_options_usage(stat_usage, stat_options, "p", 1); 2498 parse_options_usage(NULL, stat_options, "t", 1); 2499 } else if (target__has_cpu(&target)) { 2500 perror("failed to parse CPUs map"); 2501 parse_options_usage(stat_usage, stat_options, "C", 1); 2502 parse_options_usage(NULL, stat_options, "a", 1); 2503 } 2504 goto out; 2505 } 2506 2507 evlist__check_cpu_maps(evsel_list); 2508 2509 /* 2510 * Initialize thread_map with comm names, 2511 * so we could print it out on output. 2512 */ 2513 if (stat_config.aggr_mode == AGGR_THREAD) { 2514 thread_map__read_comms(evsel_list->core.threads); 2515 if (target.system_wide) { 2516 if (runtime_stat_new(&stat_config, 2517 perf_thread_map__nr(evsel_list->core.threads))) { 2518 goto out; 2519 } 2520 } 2521 } 2522 2523 if (stat_config.aggr_mode == AGGR_NODE) 2524 cpu__setup_cpunode_map(); 2525 2526 if (stat_config.times && interval) 2527 interval_count = true; 2528 else if (stat_config.times && !interval) { 2529 pr_err("interval-count option should be used together with " 2530 "interval-print.\n"); 2531 parse_options_usage(stat_usage, stat_options, "interval-count", 0); 2532 parse_options_usage(stat_usage, stat_options, "I", 1); 2533 goto out; 2534 } 2535 2536 if (timeout && timeout < 100) { 2537 if (timeout < 10) { 2538 pr_err("timeout must be >= 10ms.\n"); 2539 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2540 goto out; 2541 } else 2542 pr_warning("timeout < 100ms. " 2543 "The overhead percentage could be high in some cases. " 2544 "Please proceed with caution.\n"); 2545 } 2546 if (timeout && interval) { 2547 pr_err("timeout option is not supported with interval-print.\n"); 2548 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2549 parse_options_usage(stat_usage, stat_options, "I", 1); 2550 goto out; 2551 } 2552 2553 if (evlist__alloc_stats(evsel_list, interval)) 2554 goto out; 2555 2556 if (perf_stat_init_aggr_mode()) 2557 goto out; 2558 2559 /* 2560 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless 2561 * while avoiding that older tools show confusing messages. 2562 * 2563 * However for pipe sessions we need to keep it zero, 2564 * because script's perf_evsel__check_attr is triggered 2565 * by attr->sample_type != 0, and we can't run it on 2566 * stat sessions. 2567 */ 2568 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); 2569 2570 /* 2571 * We dont want to block the signals - that would cause 2572 * child tasks to inherit that and Ctrl-C would not work. 2573 * What we want is for Ctrl-C to work in the exec()-ed 2574 * task, but being ignored by perf stat itself: 2575 */ 2576 atexit(sig_atexit); 2577 if (!forever) 2578 signal(SIGINT, skip_signal); 2579 signal(SIGCHLD, skip_signal); 2580 signal(SIGALRM, skip_signal); 2581 signal(SIGABRT, skip_signal); 2582 2583 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) 2584 goto out; 2585 2586 /* Enable ignoring missing threads when -p option is defined. */ 2587 evlist__first(evsel_list)->ignore_missing_thread = target.pid; 2588 status = 0; 2589 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { 2590 if (stat_config.run_count != 1 && verbose > 0) 2591 fprintf(output, "[ perf stat: executing run #%d ... ]\n", 2592 run_idx + 1); 2593 2594 if (run_idx != 0) 2595 evlist__reset_prev_raw_counts(evsel_list); 2596 2597 status = run_perf_stat(argc, argv, run_idx); 2598 if (forever && status != -1 && !interval) { 2599 print_counters(NULL, argc, argv); 2600 perf_stat__reset_stats(); 2601 } 2602 } 2603 2604 if (!forever && status != -1 && (!interval || stat_config.summary)) 2605 print_counters(NULL, argc, argv); 2606 2607 evlist__finalize_ctlfd(evsel_list); 2608 2609 if (STAT_RECORD) { 2610 /* 2611 * We synthesize the kernel mmap record just so that older tools 2612 * don't emit warnings about not being able to resolve symbols 2613 * due to /proc/sys/kernel/kptr_restrict settings and instead provide 2614 * a saner message about no samples being in the perf.data file. 2615 * 2616 * This also serves to suppress a warning about f_header.data.size == 0 2617 * in header.c at the moment 'perf stat record' gets introduced, which 2618 * is not really needed once we start adding the stat specific PERF_RECORD_ 2619 * records, but the need to suppress the kptr_restrict messages in older 2620 * tools remain -acme 2621 */ 2622 int fd = perf_data__fd(&perf_stat.data); 2623 2624 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, 2625 process_synthesized_event, 2626 &perf_stat.session->machines.host); 2627 if (err) { 2628 pr_warning("Couldn't synthesize the kernel mmap record, harmless, " 2629 "older tools may produce warnings about this file\n."); 2630 } 2631 2632 if (!interval) { 2633 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) 2634 pr_err("failed to write stat round event\n"); 2635 } 2636 2637 if (!perf_stat.data.is_pipe) { 2638 perf_stat.session->header.data_size += perf_stat.bytes_written; 2639 perf_session__write_header(perf_stat.session, evsel_list, fd, true); 2640 } 2641 2642 evlist__close(evsel_list); 2643 perf_session__delete(perf_stat.session); 2644 } 2645 2646 perf_stat__exit_aggr_mode(); 2647 evlist__free_stats(evsel_list); 2648 out: 2649 if (stat_config.iostat_run) 2650 iostat_release(evsel_list); 2651 2652 zfree(&stat_config.walltime_run); 2653 zfree(&stat_config.user_requested_cpu_list); 2654 2655 if (smi_cost && smi_reset) 2656 sysfs__write_int(FREEZE_ON_SMI_PATH, 0); 2657 2658 evlist__delete(evsel_list); 2659 2660 metricgroup__rblist_exit(&stat_config.metric_events); 2661 runtime_stat_delete(&stat_config); 2662 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); 2663 2664 return status; 2665 } 2666