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; 194 195 struct perf_stat { 196 bool record; 197 struct perf_data data; 198 struct perf_session *session; 199 u64 bytes_written; 200 struct perf_tool tool; 201 bool maps_allocated; 202 struct perf_cpu_map *cpus; 203 struct perf_thread_map *threads; 204 enum aggr_mode aggr_mode; 205 }; 206 207 static struct perf_stat perf_stat; 208 #define STAT_RECORD perf_stat.record 209 210 static volatile int done = 0; 211 212 static struct perf_stat_config stat_config = { 213 .aggr_mode = AGGR_GLOBAL, 214 .scale = true, 215 .unit_width = 4, /* strlen("unit") */ 216 .run_count = 1, 217 .metric_only_len = METRIC_ONLY_LEN, 218 .walltime_nsecs_stats = &walltime_nsecs_stats, 219 .ru_stats = &ru_stats, 220 .big_num = true, 221 .ctl_fd = -1, 222 .ctl_fd_ack = -1, 223 .iostat_run = false, 224 }; 225 226 static bool cpus_map_matched(struct evsel *a, struct evsel *b) 227 { 228 if (!a->core.cpus && !b->core.cpus) 229 return true; 230 231 if (!a->core.cpus || !b->core.cpus) 232 return false; 233 234 if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus)) 235 return false; 236 237 for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) { 238 if (perf_cpu_map__cpu(a->core.cpus, i).cpu != 239 perf_cpu_map__cpu(b->core.cpus, i).cpu) 240 return false; 241 } 242 243 return true; 244 } 245 246 static void evlist__check_cpu_maps(struct evlist *evlist) 247 { 248 struct evsel *evsel, *pos, *leader; 249 char buf[1024]; 250 251 if (evlist__has_hybrid(evlist)) 252 evlist__warn_hybrid_group(evlist); 253 254 evlist__for_each_entry(evlist, evsel) { 255 leader = evsel__leader(evsel); 256 257 /* Check that leader matches cpus with each member. */ 258 if (leader == evsel) 259 continue; 260 if (cpus_map_matched(leader, evsel)) 261 continue; 262 263 /* If there's mismatch disable the group and warn user. */ 264 WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n"); 265 evsel__group_desc(leader, buf, sizeof(buf)); 266 pr_warning(" %s\n", buf); 267 268 if (verbose) { 269 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf)); 270 pr_warning(" %s: %s\n", leader->name, buf); 271 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf)); 272 pr_warning(" %s: %s\n", evsel->name, buf); 273 } 274 275 for_each_group_evsel(pos, leader) 276 evsel__remove_from_group(pos, leader); 277 } 278 } 279 280 static inline void diff_timespec(struct timespec *r, struct timespec *a, 281 struct timespec *b) 282 { 283 r->tv_sec = a->tv_sec - b->tv_sec; 284 if (a->tv_nsec < b->tv_nsec) { 285 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; 286 r->tv_sec--; 287 } else { 288 r->tv_nsec = a->tv_nsec - b->tv_nsec ; 289 } 290 } 291 292 static void perf_stat__reset_stats(void) 293 { 294 int i; 295 296 evlist__reset_stats(evsel_list); 297 perf_stat__reset_shadow_stats(); 298 299 for (i = 0; i < stat_config.stats_num; i++) 300 perf_stat__reset_shadow_per_stat(&stat_config.stats[i]); 301 } 302 303 static int process_synthesized_event(struct perf_tool *tool __maybe_unused, 304 union perf_event *event, 305 struct perf_sample *sample __maybe_unused, 306 struct machine *machine __maybe_unused) 307 { 308 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { 309 pr_err("failed to write perf data, error: %m\n"); 310 return -1; 311 } 312 313 perf_stat.bytes_written += event->header.size; 314 return 0; 315 } 316 317 static int write_stat_round_event(u64 tm, u64 type) 318 { 319 return perf_event__synthesize_stat_round(NULL, tm, type, 320 process_synthesized_event, 321 NULL); 322 } 323 324 #define WRITE_STAT_ROUND_EVENT(time, interval) \ 325 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) 326 327 #define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) 328 329 static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread, 330 struct perf_counts_values *count) 331 { 332 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread); 333 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx); 334 335 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, 336 process_synthesized_event, NULL); 337 } 338 339 static int read_single_counter(struct evsel *counter, int cpu_map_idx, 340 int thread, struct timespec *rs) 341 { 342 switch(counter->tool_event) { 343 case PERF_TOOL_DURATION_TIME: { 344 u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL; 345 struct perf_counts_values *count = 346 perf_counts(counter->counts, cpu_map_idx, thread); 347 count->ena = count->run = val; 348 count->val = val; 349 return 0; 350 } 351 case PERF_TOOL_USER_TIME: 352 case PERF_TOOL_SYSTEM_TIME: { 353 u64 val; 354 struct perf_counts_values *count = 355 perf_counts(counter->counts, cpu_map_idx, thread); 356 if (counter->tool_event == PERF_TOOL_USER_TIME) 357 val = ru_stats.ru_utime_usec_stat.mean; 358 else 359 val = ru_stats.ru_stime_usec_stat.mean; 360 count->ena = count->run = val; 361 count->val = val; 362 return 0; 363 } 364 default: 365 case PERF_TOOL_NONE: 366 return evsel__read_counter(counter, cpu_map_idx, thread); 367 case PERF_TOOL_MAX: 368 /* This should never be reached */ 369 return 0; 370 } 371 } 372 373 /* 374 * Read out the results of a single counter: 375 * do not aggregate counts across CPUs in system-wide mode 376 */ 377 static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx) 378 { 379 int nthreads = perf_thread_map__nr(evsel_list->core.threads); 380 int thread; 381 382 if (!counter->supported) 383 return -ENOENT; 384 385 for (thread = 0; thread < nthreads; thread++) { 386 struct perf_counts_values *count; 387 388 count = perf_counts(counter->counts, cpu_map_idx, thread); 389 390 /* 391 * The leader's group read loads data into its group members 392 * (via evsel__read_counter()) and sets their count->loaded. 393 */ 394 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) && 395 read_single_counter(counter, cpu_map_idx, thread, rs)) { 396 counter->counts->scaled = -1; 397 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0; 398 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0; 399 return -1; 400 } 401 402 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false); 403 404 if (STAT_RECORD) { 405 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) { 406 pr_err("failed to write stat event\n"); 407 return -1; 408 } 409 } 410 411 if (verbose > 1) { 412 fprintf(stat_config.output, 413 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", 414 evsel__name(counter), 415 perf_cpu_map__cpu(evsel__cpus(counter), 416 cpu_map_idx).cpu, 417 count->val, count->ena, count->run); 418 } 419 } 420 421 return 0; 422 } 423 424 static int read_affinity_counters(struct timespec *rs) 425 { 426 struct evlist_cpu_iterator evlist_cpu_itr; 427 struct affinity saved_affinity, *affinity; 428 429 if (all_counters_use_bpf) 430 return 0; 431 432 if (!target__has_cpu(&target) || target__has_per_thread(&target)) 433 affinity = NULL; 434 else if (affinity__setup(&saved_affinity) < 0) 435 return -1; 436 else 437 affinity = &saved_affinity; 438 439 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 440 struct evsel *counter = evlist_cpu_itr.evsel; 441 442 if (evsel__is_bpf(counter)) 443 continue; 444 445 if (!counter->err) { 446 counter->err = read_counter_cpu(counter, rs, 447 evlist_cpu_itr.cpu_map_idx); 448 } 449 } 450 if (affinity) 451 affinity__cleanup(&saved_affinity); 452 453 return 0; 454 } 455 456 static int read_bpf_map_counters(void) 457 { 458 struct evsel *counter; 459 int err; 460 461 evlist__for_each_entry(evsel_list, counter) { 462 if (!evsel__is_bpf(counter)) 463 continue; 464 465 err = bpf_counter__read(counter); 466 if (err) 467 return err; 468 } 469 return 0; 470 } 471 472 static void read_counters(struct timespec *rs) 473 { 474 struct evsel *counter; 475 476 if (!stat_config.stop_read_counter) { 477 if (read_bpf_map_counters() || 478 read_affinity_counters(rs)) 479 return; 480 } 481 482 evlist__for_each_entry(evsel_list, counter) { 483 if (counter->err) 484 pr_debug("failed to read counter %s\n", counter->name); 485 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter)) 486 pr_warning("failed to process counter %s\n", counter->name); 487 counter->err = 0; 488 } 489 } 490 491 static int runtime_stat_new(struct perf_stat_config *config, int nthreads) 492 { 493 int i; 494 495 config->stats = calloc(nthreads, sizeof(struct runtime_stat)); 496 if (!config->stats) 497 return -1; 498 499 config->stats_num = nthreads; 500 501 for (i = 0; i < nthreads; i++) 502 runtime_stat__init(&config->stats[i]); 503 504 return 0; 505 } 506 507 static void runtime_stat_delete(struct perf_stat_config *config) 508 { 509 int i; 510 511 if (!config->stats) 512 return; 513 514 for (i = 0; i < config->stats_num; i++) 515 runtime_stat__exit(&config->stats[i]); 516 517 zfree(&config->stats); 518 } 519 520 static void runtime_stat_reset(struct perf_stat_config *config) 521 { 522 int i; 523 524 if (!config->stats) 525 return; 526 527 for (i = 0; i < config->stats_num; i++) 528 perf_stat__reset_shadow_per_stat(&config->stats[i]); 529 } 530 531 static void process_interval(void) 532 { 533 struct timespec ts, rs; 534 535 clock_gettime(CLOCK_MONOTONIC, &ts); 536 diff_timespec(&rs, &ts, &ref_time); 537 538 perf_stat__reset_shadow_per_stat(&rt_stat); 539 runtime_stat_reset(&stat_config); 540 read_counters(&rs); 541 542 if (STAT_RECORD) { 543 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) 544 pr_err("failed to write stat round event\n"); 545 } 546 547 init_stats(&walltime_nsecs_stats); 548 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL); 549 print_counters(&rs, 0, NULL); 550 } 551 552 static bool handle_interval(unsigned int interval, int *times) 553 { 554 if (interval) { 555 process_interval(); 556 if (interval_count && !(--(*times))) 557 return true; 558 } 559 return false; 560 } 561 562 static int enable_counters(void) 563 { 564 struct evsel *evsel; 565 int err; 566 567 evlist__for_each_entry(evsel_list, evsel) { 568 if (!evsel__is_bpf(evsel)) 569 continue; 570 571 err = bpf_counter__enable(evsel); 572 if (err) 573 return err; 574 } 575 576 if (stat_config.initial_delay < 0) { 577 pr_info(EVLIST_DISABLED_MSG); 578 return 0; 579 } 580 581 if (stat_config.initial_delay > 0) { 582 pr_info(EVLIST_DISABLED_MSG); 583 usleep(stat_config.initial_delay * USEC_PER_MSEC); 584 } 585 586 /* 587 * We need to enable counters only if: 588 * - we don't have tracee (attaching to task or cpu) 589 * - we have initial delay configured 590 */ 591 if (!target__none(&target) || stat_config.initial_delay) { 592 if (!all_counters_use_bpf) 593 evlist__enable(evsel_list); 594 if (stat_config.initial_delay > 0) 595 pr_info(EVLIST_ENABLED_MSG); 596 } 597 return 0; 598 } 599 600 static void disable_counters(void) 601 { 602 struct evsel *counter; 603 604 /* 605 * If we don't have tracee (attaching to task or cpu), counters may 606 * still be running. To get accurate group ratios, we must stop groups 607 * from counting before reading their constituent counters. 608 */ 609 if (!target__none(&target)) { 610 evlist__for_each_entry(evsel_list, counter) 611 bpf_counter__disable(counter); 612 if (!all_counters_use_bpf) 613 evlist__disable(evsel_list); 614 } 615 } 616 617 static volatile int workload_exec_errno; 618 619 /* 620 * evlist__prepare_workload will send a SIGUSR1 621 * if the fork fails, since we asked by setting its 622 * want_signal to true. 623 */ 624 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, 625 void *ucontext __maybe_unused) 626 { 627 workload_exec_errno = info->si_value.sival_int; 628 } 629 630 static bool evsel__should_store_id(struct evsel *counter) 631 { 632 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; 633 } 634 635 static bool is_target_alive(struct target *_target, 636 struct perf_thread_map *threads) 637 { 638 struct stat st; 639 int i; 640 641 if (!target__has_task(_target)) 642 return true; 643 644 for (i = 0; i < threads->nr; i++) { 645 char path[PATH_MAX]; 646 647 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), 648 threads->map[i].pid); 649 650 if (!stat(path, &st)) 651 return true; 652 } 653 654 return false; 655 } 656 657 static void process_evlist(struct evlist *evlist, unsigned int interval) 658 { 659 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; 660 661 if (evlist__ctlfd_process(evlist, &cmd) > 0) { 662 switch (cmd) { 663 case EVLIST_CTL_CMD_ENABLE: 664 if (interval) 665 process_interval(); 666 break; 667 case EVLIST_CTL_CMD_DISABLE: 668 if (interval) 669 process_interval(); 670 break; 671 case EVLIST_CTL_CMD_SNAPSHOT: 672 case EVLIST_CTL_CMD_ACK: 673 case EVLIST_CTL_CMD_UNSUPPORTED: 674 case EVLIST_CTL_CMD_EVLIST: 675 case EVLIST_CTL_CMD_STOP: 676 case EVLIST_CTL_CMD_PING: 677 default: 678 break; 679 } 680 } 681 } 682 683 static void compute_tts(struct timespec *time_start, struct timespec *time_stop, 684 int *time_to_sleep) 685 { 686 int tts = *time_to_sleep; 687 struct timespec time_diff; 688 689 diff_timespec(&time_diff, time_stop, time_start); 690 691 tts -= time_diff.tv_sec * MSEC_PER_SEC + 692 time_diff.tv_nsec / NSEC_PER_MSEC; 693 694 if (tts < 0) 695 tts = 0; 696 697 *time_to_sleep = tts; 698 } 699 700 static int dispatch_events(bool forks, int timeout, int interval, int *times) 701 { 702 int child_exited = 0, status = 0; 703 int time_to_sleep, sleep_time; 704 struct timespec time_start, time_stop; 705 706 if (interval) 707 sleep_time = interval; 708 else if (timeout) 709 sleep_time = timeout; 710 else 711 sleep_time = 1000; 712 713 time_to_sleep = sleep_time; 714 715 while (!done) { 716 if (forks) 717 child_exited = waitpid(child_pid, &status, WNOHANG); 718 else 719 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; 720 721 if (child_exited) 722 break; 723 724 clock_gettime(CLOCK_MONOTONIC, &time_start); 725 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ 726 if (timeout || handle_interval(interval, times)) 727 break; 728 time_to_sleep = sleep_time; 729 } else { /* fd revent */ 730 process_evlist(evsel_list, interval); 731 clock_gettime(CLOCK_MONOTONIC, &time_stop); 732 compute_tts(&time_start, &time_stop, &time_to_sleep); 733 } 734 } 735 736 return status; 737 } 738 739 enum counter_recovery { 740 COUNTER_SKIP, 741 COUNTER_RETRY, 742 COUNTER_FATAL, 743 }; 744 745 static enum counter_recovery stat_handle_error(struct evsel *counter) 746 { 747 char msg[BUFSIZ]; 748 /* 749 * PPC returns ENXIO for HW counters until 2.6.37 750 * (behavior changed with commit b0a873e). 751 */ 752 if (errno == EINVAL || errno == ENOSYS || 753 errno == ENOENT || errno == EOPNOTSUPP || 754 errno == ENXIO) { 755 if (verbose > 0) 756 ui__warning("%s event is not supported by the kernel.\n", 757 evsel__name(counter)); 758 counter->supported = false; 759 /* 760 * errored is a sticky flag that means one of the counter's 761 * cpu event had a problem and needs to be reexamined. 762 */ 763 counter->errored = true; 764 765 if ((evsel__leader(counter) != counter) || 766 !(counter->core.leader->nr_members > 1)) 767 return COUNTER_SKIP; 768 } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) { 769 if (verbose > 0) 770 ui__warning("%s\n", msg); 771 return COUNTER_RETRY; 772 } else if (target__has_per_thread(&target) && 773 evsel_list->core.threads && 774 evsel_list->core.threads->err_thread != -1) { 775 /* 776 * For global --per-thread case, skip current 777 * error thread. 778 */ 779 if (!thread_map__remove(evsel_list->core.threads, 780 evsel_list->core.threads->err_thread)) { 781 evsel_list->core.threads->err_thread = -1; 782 return COUNTER_RETRY; 783 } 784 } 785 786 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); 787 ui__error("%s\n", msg); 788 789 if (child_pid != -1) 790 kill(child_pid, SIGTERM); 791 return COUNTER_FATAL; 792 } 793 794 static int __run_perf_stat(int argc, const char **argv, int run_idx) 795 { 796 int interval = stat_config.interval; 797 int times = stat_config.times; 798 int timeout = stat_config.timeout; 799 char msg[BUFSIZ]; 800 unsigned long long t0, t1; 801 struct evsel *counter; 802 size_t l; 803 int status = 0; 804 const bool forks = (argc > 0); 805 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; 806 struct evlist_cpu_iterator evlist_cpu_itr; 807 struct affinity saved_affinity, *affinity = NULL; 808 int err; 809 bool second_pass = false; 810 811 if (forks) { 812 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { 813 perror("failed to prepare workload"); 814 return -1; 815 } 816 child_pid = evsel_list->workload.pid; 817 } 818 819 if (group) 820 evlist__set_leader(evsel_list); 821 822 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { 823 if (affinity__setup(&saved_affinity) < 0) 824 return -1; 825 affinity = &saved_affinity; 826 } 827 828 evlist__for_each_entry(evsel_list, counter) { 829 counter->reset_group = false; 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_BOOLEAN('j', "json-output", &stat_config.json_output, 1254 "print counts in JSON format"), 1255 OPT_CALLBACK('G', "cgroup", &evsel_list, "name", 1256 "monitor event in cgroup name only", parse_stat_cgroups), 1257 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", 1258 "expand events for each cgroup"), 1259 OPT_STRING('o', "output", &output_name, "file", "output file name"), 1260 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), 1261 OPT_INTEGER(0, "log-fd", &output_fd, 1262 "log output to fd, instead of stderr"), 1263 OPT_STRING(0, "pre", &pre_cmd, "command", 1264 "command to run prior to the measured command"), 1265 OPT_STRING(0, "post", &post_cmd, "command", 1266 "command to run after to the measured command"), 1267 OPT_UINTEGER('I', "interval-print", &stat_config.interval, 1268 "print counts at regular interval in ms " 1269 "(overhead is possible for values <= 100ms)"), 1270 OPT_INTEGER(0, "interval-count", &stat_config.times, 1271 "print counts for fixed number of times"), 1272 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, 1273 "clear screen in between new interval"), 1274 OPT_UINTEGER(0, "timeout", &stat_config.timeout, 1275 "stop workload and print counts after a timeout period in ms (>= 10ms)"), 1276 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, 1277 "aggregate counts per processor socket", AGGR_SOCKET), 1278 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, 1279 "aggregate counts per processor die", AGGR_DIE), 1280 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, 1281 "aggregate counts per physical processor core", AGGR_CORE), 1282 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, 1283 "aggregate counts per thread", AGGR_THREAD), 1284 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, 1285 "aggregate counts per numa node", AGGR_NODE), 1286 OPT_INTEGER('D', "delay", &stat_config.initial_delay, 1287 "ms to wait before starting measurement after program start (-1: start with events disabled)"), 1288 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, 1289 "Only print computed metrics. No raw values", enable_metric_only), 1290 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, 1291 "don't group metric events, impacts multiplexing"), 1292 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, 1293 "don't try to share events between metrics in a group"), 1294 OPT_BOOLEAN(0, "topdown", &topdown_run, 1295 "measure top-down statistics"), 1296 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, 1297 "Set the metrics level for the top-down statistics (0: max level)"), 1298 OPT_BOOLEAN(0, "smi-cost", &smi_cost, 1299 "measure SMI cost"), 1300 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", 1301 "monitor specified metrics or metric groups (separated by ,)", 1302 parse_metric_groups), 1303 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, 1304 "Configure all used events to run in kernel space.", 1305 PARSE_OPT_EXCLUSIVE), 1306 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, 1307 "Configure all used events to run in user space.", 1308 PARSE_OPT_EXCLUSIVE), 1309 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, 1310 "Use with 'percore' event qualifier to show the event " 1311 "counts of one hardware thread by sum up total hardware " 1312 "threads of same physical core"), 1313 OPT_BOOLEAN(0, "summary", &stat_config.summary, 1314 "print summary for interval mode"), 1315 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, 1316 "don't print 'summary' for CSV summary output"), 1317 OPT_BOOLEAN(0, "quiet", &stat_config.quiet, 1318 "don't print output (useful with record)"), 1319 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", 1320 "Only enable events on applying cpu with this type " 1321 "for hybrid platform (e.g. core or atom)", 1322 parse_hybrid_type), 1323 #ifdef HAVE_LIBPFM 1324 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", 1325 "libpfm4 event selector. use 'perf list' to list available events", 1326 parse_libpfm_events_option), 1327 #endif 1328 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", 1329 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" 1330 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" 1331 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", 1332 parse_control_option), 1333 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", 1334 "measure I/O performance metrics provided by arch/platform", 1335 iostat_parse), 1336 OPT_END() 1337 }; 1338 1339 static const char *const aggr_mode__string[] = { 1340 [AGGR_CORE] = "core", 1341 [AGGR_DIE] = "die", 1342 [AGGR_GLOBAL] = "global", 1343 [AGGR_NODE] = "node", 1344 [AGGR_NONE] = "none", 1345 [AGGR_SOCKET] = "socket", 1346 [AGGR_THREAD] = "thread", 1347 [AGGR_UNSET] = "unset", 1348 }; 1349 1350 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, 1351 struct perf_cpu cpu) 1352 { 1353 return aggr_cpu_id__socket(cpu, /*data=*/NULL); 1354 } 1355 1356 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, 1357 struct perf_cpu cpu) 1358 { 1359 return aggr_cpu_id__die(cpu, /*data=*/NULL); 1360 } 1361 1362 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, 1363 struct perf_cpu cpu) 1364 { 1365 return aggr_cpu_id__core(cpu, /*data=*/NULL); 1366 } 1367 1368 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, 1369 struct perf_cpu cpu) 1370 { 1371 return aggr_cpu_id__node(cpu, /*data=*/NULL); 1372 } 1373 1374 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, 1375 aggr_get_id_t get_id, struct perf_cpu cpu) 1376 { 1377 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1378 1379 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) 1380 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); 1381 1382 id = config->cpus_aggr_map->map[cpu.cpu]; 1383 return id; 1384 } 1385 1386 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, 1387 struct perf_cpu cpu) 1388 { 1389 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); 1390 } 1391 1392 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, 1393 struct perf_cpu cpu) 1394 { 1395 return perf_stat__get_aggr(config, perf_stat__get_die, cpu); 1396 } 1397 1398 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, 1399 struct perf_cpu cpu) 1400 { 1401 return perf_stat__get_aggr(config, perf_stat__get_core, cpu); 1402 } 1403 1404 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, 1405 struct perf_cpu cpu) 1406 { 1407 return perf_stat__get_aggr(config, perf_stat__get_node, cpu); 1408 } 1409 1410 static bool term_percore_set(void) 1411 { 1412 struct evsel *counter; 1413 1414 evlist__for_each_entry(evsel_list, counter) { 1415 if (counter->percore) 1416 return true; 1417 } 1418 1419 return false; 1420 } 1421 1422 static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) 1423 { 1424 switch (aggr_mode) { 1425 case AGGR_SOCKET: 1426 return aggr_cpu_id__socket; 1427 case AGGR_DIE: 1428 return aggr_cpu_id__die; 1429 case AGGR_CORE: 1430 return aggr_cpu_id__core; 1431 case AGGR_NODE: 1432 return aggr_cpu_id__node; 1433 case AGGR_NONE: 1434 if (term_percore_set()) 1435 return aggr_cpu_id__core; 1436 1437 return NULL; 1438 case AGGR_GLOBAL: 1439 case AGGR_THREAD: 1440 case AGGR_UNSET: 1441 case AGGR_MAX: 1442 default: 1443 return NULL; 1444 } 1445 } 1446 1447 static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) 1448 { 1449 switch (aggr_mode) { 1450 case AGGR_SOCKET: 1451 return perf_stat__get_socket_cached; 1452 case AGGR_DIE: 1453 return perf_stat__get_die_cached; 1454 case AGGR_CORE: 1455 return perf_stat__get_core_cached; 1456 case AGGR_NODE: 1457 return perf_stat__get_node_cached; 1458 case AGGR_NONE: 1459 if (term_percore_set()) { 1460 return perf_stat__get_core_cached; 1461 } 1462 return NULL; 1463 case AGGR_GLOBAL: 1464 case AGGR_THREAD: 1465 case AGGR_UNSET: 1466 case AGGR_MAX: 1467 default: 1468 return NULL; 1469 } 1470 } 1471 1472 static int perf_stat_init_aggr_mode(void) 1473 { 1474 int nr; 1475 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); 1476 1477 if (get_id) { 1478 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1479 get_id, /*data=*/NULL); 1480 if (!stat_config.aggr_map) { 1481 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1482 return -1; 1483 } 1484 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); 1485 } 1486 1487 /* 1488 * The evsel_list->cpus is the base we operate on, 1489 * taking the highest cpu number to be the size of 1490 * the aggregation translate cpumap. 1491 */ 1492 if (evsel_list->core.user_requested_cpus) 1493 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu; 1494 else 1495 nr = 0; 1496 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); 1497 return stat_config.cpus_aggr_map ? 0 : -ENOMEM; 1498 } 1499 1500 static void cpu_aggr_map__delete(struct cpu_aggr_map *map) 1501 { 1502 if (map) { 1503 WARN_ONCE(refcount_read(&map->refcnt) != 0, 1504 "cpu_aggr_map refcnt unbalanced\n"); 1505 free(map); 1506 } 1507 } 1508 1509 static void cpu_aggr_map__put(struct cpu_aggr_map *map) 1510 { 1511 if (map && refcount_dec_and_test(&map->refcnt)) 1512 cpu_aggr_map__delete(map); 1513 } 1514 1515 static void perf_stat__exit_aggr_mode(void) 1516 { 1517 cpu_aggr_map__put(stat_config.aggr_map); 1518 cpu_aggr_map__put(stat_config.cpus_aggr_map); 1519 stat_config.aggr_map = NULL; 1520 stat_config.cpus_aggr_map = NULL; 1521 } 1522 1523 static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data) 1524 { 1525 struct perf_env *env = data; 1526 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1527 1528 if (cpu.cpu != -1) 1529 id.socket = env->cpu[cpu.cpu].socket_id; 1530 1531 return id; 1532 } 1533 1534 static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) 1535 { 1536 struct perf_env *env = data; 1537 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1538 1539 if (cpu.cpu != -1) { 1540 /* 1541 * die_id is relative to socket, so start 1542 * with the socket ID and then add die to 1543 * make a unique ID. 1544 */ 1545 id.socket = env->cpu[cpu.cpu].socket_id; 1546 id.die = env->cpu[cpu.cpu].die_id; 1547 } 1548 1549 return id; 1550 } 1551 1552 static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) 1553 { 1554 struct perf_env *env = data; 1555 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1556 1557 if (cpu.cpu != -1) { 1558 /* 1559 * core_id is relative to socket and die, 1560 * we need a global id. So we set 1561 * socket, die id and core id 1562 */ 1563 id.socket = env->cpu[cpu.cpu].socket_id; 1564 id.die = env->cpu[cpu.cpu].die_id; 1565 id.core = env->cpu[cpu.cpu].core_id; 1566 } 1567 1568 return id; 1569 } 1570 1571 static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) 1572 { 1573 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1574 1575 id.node = perf_env__numa_node(data, cpu); 1576 return id; 1577 } 1578 1579 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, 1580 struct perf_cpu cpu) 1581 { 1582 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1583 } 1584 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, 1585 struct perf_cpu cpu) 1586 { 1587 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1588 } 1589 1590 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, 1591 struct perf_cpu cpu) 1592 { 1593 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1594 } 1595 1596 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, 1597 struct perf_cpu cpu) 1598 { 1599 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1600 } 1601 1602 static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) 1603 { 1604 switch (aggr_mode) { 1605 case AGGR_SOCKET: 1606 return perf_env__get_socket_aggr_by_cpu; 1607 case AGGR_DIE: 1608 return perf_env__get_die_aggr_by_cpu; 1609 case AGGR_CORE: 1610 return perf_env__get_core_aggr_by_cpu; 1611 case AGGR_NODE: 1612 return perf_env__get_node_aggr_by_cpu; 1613 case AGGR_NONE: 1614 case AGGR_GLOBAL: 1615 case AGGR_THREAD: 1616 case AGGR_UNSET: 1617 case AGGR_MAX: 1618 default: 1619 return NULL; 1620 } 1621 } 1622 1623 static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) 1624 { 1625 switch (aggr_mode) { 1626 case AGGR_SOCKET: 1627 return perf_stat__get_socket_file; 1628 case AGGR_DIE: 1629 return perf_stat__get_die_file; 1630 case AGGR_CORE: 1631 return perf_stat__get_core_file; 1632 case AGGR_NODE: 1633 return perf_stat__get_node_file; 1634 case AGGR_NONE: 1635 case AGGR_GLOBAL: 1636 case AGGR_THREAD: 1637 case AGGR_UNSET: 1638 case AGGR_MAX: 1639 default: 1640 return NULL; 1641 } 1642 } 1643 1644 static int perf_stat_init_aggr_mode_file(struct perf_stat *st) 1645 { 1646 struct perf_env *env = &st->session->header.env; 1647 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); 1648 1649 if (!get_id) 1650 return 0; 1651 1652 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, get_id, env); 1653 if (!stat_config.aggr_map) { 1654 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1655 return -1; 1656 } 1657 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode); 1658 return 0; 1659 } 1660 1661 /* 1662 * Add default attributes, if there were no attributes specified or 1663 * if -d/--detailed, -d -d or -d -d -d is used: 1664 */ 1665 static int add_default_attributes(void) 1666 { 1667 int err; 1668 struct perf_event_attr default_attrs0[] = { 1669 1670 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, 1671 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, 1672 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, 1673 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, 1674 1675 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, 1676 }; 1677 struct perf_event_attr frontend_attrs[] = { 1678 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, 1679 }; 1680 struct perf_event_attr backend_attrs[] = { 1681 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, 1682 }; 1683 struct perf_event_attr default_attrs1[] = { 1684 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, 1685 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, 1686 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, 1687 1688 }; 1689 1690 /* 1691 * Detailed stats (-d), covering the L1 and last level data caches: 1692 */ 1693 struct perf_event_attr detailed_attrs[] = { 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_ACCESS << 16) }, 1700 1701 { .type = PERF_TYPE_HW_CACHE, 1702 .config = 1703 PERF_COUNT_HW_CACHE_L1D << 0 | 1704 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1705 (PERF_COUNT_HW_CACHE_RESULT_MISS << 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_ACCESS << 16) }, 1712 1713 { .type = PERF_TYPE_HW_CACHE, 1714 .config = 1715 PERF_COUNT_HW_CACHE_LL << 0 | 1716 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1717 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1718 }; 1719 1720 /* 1721 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: 1722 */ 1723 struct perf_event_attr very_detailed_attrs[] = { 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_ACCESS << 16) }, 1730 1731 { .type = PERF_TYPE_HW_CACHE, 1732 .config = 1733 PERF_COUNT_HW_CACHE_L1I << 0 | 1734 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1735 (PERF_COUNT_HW_CACHE_RESULT_MISS << 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_ACCESS << 16) }, 1742 1743 { .type = PERF_TYPE_HW_CACHE, 1744 .config = 1745 PERF_COUNT_HW_CACHE_DTLB << 0 | 1746 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1747 (PERF_COUNT_HW_CACHE_RESULT_MISS << 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_ACCESS << 16) }, 1754 1755 { .type = PERF_TYPE_HW_CACHE, 1756 .config = 1757 PERF_COUNT_HW_CACHE_ITLB << 0 | 1758 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1759 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1760 1761 }; 1762 1763 /* 1764 * Very, very detailed stats (-d -d -d), adding prefetch events: 1765 */ 1766 struct perf_event_attr very_very_detailed_attrs[] = { 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_ACCESS << 16) }, 1773 1774 { .type = PERF_TYPE_HW_CACHE, 1775 .config = 1776 PERF_COUNT_HW_CACHE_L1D << 0 | 1777 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 1778 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1779 }; 1780 1781 struct perf_event_attr default_null_attrs[] = {}; 1782 1783 /* Set attrs if no event is selected and !null_run: */ 1784 if (stat_config.null_run) 1785 return 0; 1786 1787 if (transaction_run) { 1788 struct parse_events_error errinfo; 1789 /* Handle -T as -M transaction. Once platform specific metrics 1790 * support has been added to the json files, all architectures 1791 * will use this approach. To determine transaction support 1792 * on an architecture test for such a metric name. 1793 */ 1794 if (metricgroup__has_metric("transaction")) { 1795 struct option opt = { .value = &evsel_list }; 1796 1797 return metricgroup__parse_groups(&opt, "transaction", 1798 stat_config.metric_no_group, 1799 stat_config.metric_no_merge, 1800 &stat_config.metric_events); 1801 } 1802 1803 parse_events_error__init(&errinfo); 1804 if (pmu_have_event("cpu", "cycles-ct") && 1805 pmu_have_event("cpu", "el-start")) 1806 err = parse_events(evsel_list, transaction_attrs, 1807 &errinfo); 1808 else 1809 err = parse_events(evsel_list, 1810 transaction_limited_attrs, 1811 &errinfo); 1812 if (err) { 1813 fprintf(stderr, "Cannot set up transaction events\n"); 1814 parse_events_error__print(&errinfo, transaction_attrs); 1815 } 1816 parse_events_error__exit(&errinfo); 1817 return err ? -1 : 0; 1818 } 1819 1820 if (smi_cost) { 1821 struct parse_events_error errinfo; 1822 int smi; 1823 1824 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { 1825 fprintf(stderr, "freeze_on_smi is not supported.\n"); 1826 return -1; 1827 } 1828 1829 if (!smi) { 1830 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { 1831 fprintf(stderr, "Failed to set freeze_on_smi.\n"); 1832 return -1; 1833 } 1834 smi_reset = true; 1835 } 1836 1837 if (!pmu_have_event("msr", "aperf") || 1838 !pmu_have_event("msr", "smi")) { 1839 fprintf(stderr, "To measure SMI cost, it needs " 1840 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); 1841 return -1; 1842 } 1843 if (!force_metric_only) 1844 stat_config.metric_only = true; 1845 1846 parse_events_error__init(&errinfo); 1847 err = parse_events(evsel_list, smi_cost_attrs, &errinfo); 1848 if (err) { 1849 parse_events_error__print(&errinfo, smi_cost_attrs); 1850 fprintf(stderr, "Cannot set up SMI cost events\n"); 1851 } 1852 parse_events_error__exit(&errinfo); 1853 return err ? -1 : 0; 1854 } 1855 1856 if (topdown_run) { 1857 const char **metric_attrs = topdown_metric_attrs; 1858 unsigned int max_level = 1; 1859 char *str = NULL; 1860 bool warn = false; 1861 const char *pmu_name = arch_get_topdown_pmu_name(evsel_list, true); 1862 1863 if (!force_metric_only) 1864 stat_config.metric_only = true; 1865 1866 if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) { 1867 metric_attrs = topdown_metric_L2_attrs; 1868 max_level = 2; 1869 } 1870 1871 if (stat_config.topdown_level > max_level) { 1872 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); 1873 return -1; 1874 } else if (!stat_config.topdown_level) 1875 stat_config.topdown_level = max_level; 1876 1877 if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) { 1878 pr_err("Out of memory\n"); 1879 return -1; 1880 } 1881 1882 if (metric_attrs[0] && str) { 1883 if (!stat_config.interval && !stat_config.metric_only) { 1884 fprintf(stat_config.output, 1885 "Topdown accuracy may decrease when measuring long periods.\n" 1886 "Please print the result regularly, e.g. -I1000\n"); 1887 } 1888 goto setup_metrics; 1889 } 1890 1891 zfree(&str); 1892 1893 if (stat_config.aggr_mode != AGGR_GLOBAL && 1894 stat_config.aggr_mode != AGGR_CORE) { 1895 pr_err("top down event configuration requires --per-core mode\n"); 1896 return -1; 1897 } 1898 stat_config.aggr_mode = AGGR_CORE; 1899 if (nr_cgroups || !target__has_cpu(&target)) { 1900 pr_err("top down event configuration requires system-wide mode (-a)\n"); 1901 return -1; 1902 } 1903 1904 if (topdown_filter_events(topdown_attrs, &str, 1905 arch_topdown_check_group(&warn), 1906 pmu_name) < 0) { 1907 pr_err("Out of memory\n"); 1908 return -1; 1909 } 1910 1911 if (topdown_attrs[0] && str) { 1912 struct parse_events_error errinfo; 1913 if (warn) 1914 arch_topdown_group_warn(); 1915 setup_metrics: 1916 parse_events_error__init(&errinfo); 1917 err = parse_events(evsel_list, str, &errinfo); 1918 if (err) { 1919 fprintf(stderr, 1920 "Cannot set up top down events %s: %d\n", 1921 str, err); 1922 parse_events_error__print(&errinfo, str); 1923 parse_events_error__exit(&errinfo); 1924 free(str); 1925 return -1; 1926 } 1927 parse_events_error__exit(&errinfo); 1928 } else { 1929 fprintf(stderr, "System does not support topdown\n"); 1930 return -1; 1931 } 1932 free(str); 1933 } 1934 1935 if (!stat_config.topdown_level) 1936 stat_config.topdown_level = TOPDOWN_MAX_LEVEL; 1937 1938 if (!evsel_list->core.nr_entries) { 1939 if (target__has_cpu(&target)) 1940 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; 1941 1942 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) 1943 return -1; 1944 if (pmu_have_event("cpu", "stalled-cycles-frontend")) { 1945 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) 1946 return -1; 1947 } 1948 if (pmu_have_event("cpu", "stalled-cycles-backend")) { 1949 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) 1950 return -1; 1951 } 1952 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) 1953 return -1; 1954 /* Platform specific attrs */ 1955 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0) 1956 return -1; 1957 } 1958 1959 /* Detailed events get appended to the event list: */ 1960 1961 if (detailed_run < 1) 1962 return 0; 1963 1964 /* Append detailed run extra attributes: */ 1965 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) 1966 return -1; 1967 1968 if (detailed_run < 2) 1969 return 0; 1970 1971 /* Append very detailed run extra attributes: */ 1972 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) 1973 return -1; 1974 1975 if (detailed_run < 3) 1976 return 0; 1977 1978 /* Append very, very detailed run extra attributes: */ 1979 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); 1980 } 1981 1982 static const char * const stat_record_usage[] = { 1983 "perf stat record [<options>]", 1984 NULL, 1985 }; 1986 1987 static void init_features(struct perf_session *session) 1988 { 1989 int feat; 1990 1991 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) 1992 perf_header__set_feat(&session->header, feat); 1993 1994 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); 1995 perf_header__clear_feat(&session->header, HEADER_BUILD_ID); 1996 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); 1997 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); 1998 perf_header__clear_feat(&session->header, HEADER_AUXTRACE); 1999 } 2000 2001 static int __cmd_record(int argc, const char **argv) 2002 { 2003 struct perf_session *session; 2004 struct perf_data *data = &perf_stat.data; 2005 2006 argc = parse_options(argc, argv, stat_options, stat_record_usage, 2007 PARSE_OPT_STOP_AT_NON_OPTION); 2008 2009 if (output_name) 2010 data->path = output_name; 2011 2012 if (stat_config.run_count != 1 || forever) { 2013 pr_err("Cannot use -r option with perf stat record.\n"); 2014 return -1; 2015 } 2016 2017 session = perf_session__new(data, NULL); 2018 if (IS_ERR(session)) { 2019 pr_err("Perf session creation failed\n"); 2020 return PTR_ERR(session); 2021 } 2022 2023 init_features(session); 2024 2025 session->evlist = evsel_list; 2026 perf_stat.session = session; 2027 perf_stat.record = true; 2028 return argc; 2029 } 2030 2031 static int process_stat_round_event(struct perf_session *session, 2032 union perf_event *event) 2033 { 2034 struct perf_record_stat_round *stat_round = &event->stat_round; 2035 struct evsel *counter; 2036 struct timespec tsh, *ts = NULL; 2037 const char **argv = session->header.env.cmdline_argv; 2038 int argc = session->header.env.nr_cmdline; 2039 2040 evlist__for_each_entry(evsel_list, counter) 2041 perf_stat_process_counter(&stat_config, counter); 2042 2043 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) 2044 update_stats(&walltime_nsecs_stats, stat_round->time); 2045 2046 if (stat_config.interval && stat_round->time) { 2047 tsh.tv_sec = stat_round->time / NSEC_PER_SEC; 2048 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; 2049 ts = &tsh; 2050 } 2051 2052 print_counters(ts, argc, argv); 2053 return 0; 2054 } 2055 2056 static 2057 int process_stat_config_event(struct perf_session *session, 2058 union perf_event *event) 2059 { 2060 struct perf_tool *tool = session->tool; 2061 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2062 2063 perf_event__read_stat_config(&stat_config, &event->stat_config); 2064 2065 if (perf_cpu_map__empty(st->cpus)) { 2066 if (st->aggr_mode != AGGR_UNSET) 2067 pr_warning("warning: processing task data, aggregation mode not set\n"); 2068 return 0; 2069 } 2070 2071 if (st->aggr_mode != AGGR_UNSET) 2072 stat_config.aggr_mode = st->aggr_mode; 2073 2074 if (perf_stat.data.is_pipe) 2075 perf_stat_init_aggr_mode(); 2076 else 2077 perf_stat_init_aggr_mode_file(st); 2078 2079 return 0; 2080 } 2081 2082 static int set_maps(struct perf_stat *st) 2083 { 2084 if (!st->cpus || !st->threads) 2085 return 0; 2086 2087 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) 2088 return -EINVAL; 2089 2090 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); 2091 2092 if (evlist__alloc_stats(evsel_list, true)) 2093 return -ENOMEM; 2094 2095 st->maps_allocated = true; 2096 return 0; 2097 } 2098 2099 static 2100 int process_thread_map_event(struct perf_session *session, 2101 union perf_event *event) 2102 { 2103 struct perf_tool *tool = session->tool; 2104 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2105 2106 if (st->threads) { 2107 pr_warning("Extra thread map event, ignoring.\n"); 2108 return 0; 2109 } 2110 2111 st->threads = thread_map__new_event(&event->thread_map); 2112 if (!st->threads) 2113 return -ENOMEM; 2114 2115 return set_maps(st); 2116 } 2117 2118 static 2119 int process_cpu_map_event(struct perf_session *session, 2120 union perf_event *event) 2121 { 2122 struct perf_tool *tool = session->tool; 2123 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2124 struct perf_cpu_map *cpus; 2125 2126 if (st->cpus) { 2127 pr_warning("Extra cpu map event, ignoring.\n"); 2128 return 0; 2129 } 2130 2131 cpus = cpu_map__new_data(&event->cpu_map.data); 2132 if (!cpus) 2133 return -ENOMEM; 2134 2135 st->cpus = cpus; 2136 return set_maps(st); 2137 } 2138 2139 static const char * const stat_report_usage[] = { 2140 "perf stat report [<options>]", 2141 NULL, 2142 }; 2143 2144 static struct perf_stat perf_stat = { 2145 .tool = { 2146 .attr = perf_event__process_attr, 2147 .event_update = perf_event__process_event_update, 2148 .thread_map = process_thread_map_event, 2149 .cpu_map = process_cpu_map_event, 2150 .stat_config = process_stat_config_event, 2151 .stat = perf_event__process_stat_event, 2152 .stat_round = process_stat_round_event, 2153 }, 2154 .aggr_mode = AGGR_UNSET, 2155 }; 2156 2157 static int __cmd_report(int argc, const char **argv) 2158 { 2159 struct perf_session *session; 2160 const struct option options[] = { 2161 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2162 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, 2163 "aggregate counts per processor socket", AGGR_SOCKET), 2164 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, 2165 "aggregate counts per processor die", AGGR_DIE), 2166 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, 2167 "aggregate counts per physical processor core", AGGR_CORE), 2168 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, 2169 "aggregate counts per numa node", AGGR_NODE), 2170 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, 2171 "disable CPU count aggregation", AGGR_NONE), 2172 OPT_END() 2173 }; 2174 struct stat st; 2175 int ret; 2176 2177 argc = parse_options(argc, argv, options, stat_report_usage, 0); 2178 2179 if (!input_name || !strlen(input_name)) { 2180 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 2181 input_name = "-"; 2182 else 2183 input_name = "perf.data"; 2184 } 2185 2186 perf_stat.data.path = input_name; 2187 perf_stat.data.mode = PERF_DATA_MODE_READ; 2188 2189 session = perf_session__new(&perf_stat.data, &perf_stat.tool); 2190 if (IS_ERR(session)) 2191 return PTR_ERR(session); 2192 2193 perf_stat.session = session; 2194 stat_config.output = stderr; 2195 evsel_list = session->evlist; 2196 2197 ret = perf_session__process_events(session); 2198 if (ret) 2199 return ret; 2200 2201 perf_session__delete(session); 2202 return 0; 2203 } 2204 2205 static void setup_system_wide(int forks) 2206 { 2207 /* 2208 * Make system wide (-a) the default target if 2209 * no target was specified and one of following 2210 * conditions is met: 2211 * 2212 * - there's no workload specified 2213 * - there is workload specified but all requested 2214 * events are system wide events 2215 */ 2216 if (!target__none(&target)) 2217 return; 2218 2219 if (!forks) 2220 target.system_wide = true; 2221 else { 2222 struct evsel *counter; 2223 2224 evlist__for_each_entry(evsel_list, counter) { 2225 if (!counter->core.requires_cpu && 2226 strcmp(counter->name, "duration_time")) { 2227 return; 2228 } 2229 } 2230 2231 if (evsel_list->core.nr_entries) 2232 target.system_wide = true; 2233 } 2234 } 2235 2236 int cmd_stat(int argc, const char **argv) 2237 { 2238 const char * const stat_usage[] = { 2239 "perf stat [<options>] [<command>]", 2240 NULL 2241 }; 2242 int status = -EINVAL, run_idx, err; 2243 const char *mode; 2244 FILE *output = stderr; 2245 unsigned int interval, timeout; 2246 const char * const stat_subcommands[] = { "record", "report" }; 2247 char errbuf[BUFSIZ]; 2248 2249 setlocale(LC_ALL, ""); 2250 2251 evsel_list = evlist__new(); 2252 if (evsel_list == NULL) 2253 return -ENOMEM; 2254 2255 parse_events__shrink_config_terms(); 2256 2257 /* String-parsing callback-based options would segfault when negated */ 2258 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); 2259 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); 2260 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); 2261 2262 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, 2263 (const char **) stat_usage, 2264 PARSE_OPT_STOP_AT_NON_OPTION); 2265 perf_stat__collect_metric_expr(evsel_list); 2266 perf_stat__init_shadow_stats(); 2267 2268 if (stat_config.csv_sep) { 2269 stat_config.csv_output = true; 2270 if (!strcmp(stat_config.csv_sep, "\\t")) 2271 stat_config.csv_sep = "\t"; 2272 } else 2273 stat_config.csv_sep = DEFAULT_SEPARATOR; 2274 2275 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { 2276 argc = __cmd_record(argc, argv); 2277 if (argc < 0) 2278 return -1; 2279 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2280 return __cmd_report(argc, argv); 2281 2282 interval = stat_config.interval; 2283 timeout = stat_config.timeout; 2284 2285 /* 2286 * For record command the -o is already taken care of. 2287 */ 2288 if (!STAT_RECORD && output_name && strcmp(output_name, "-")) 2289 output = NULL; 2290 2291 if (output_name && output_fd) { 2292 fprintf(stderr, "cannot use both --output and --log-fd\n"); 2293 parse_options_usage(stat_usage, stat_options, "o", 1); 2294 parse_options_usage(NULL, stat_options, "log-fd", 0); 2295 goto out; 2296 } 2297 2298 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { 2299 fprintf(stderr, "--metric-only is not supported with --per-thread\n"); 2300 goto out; 2301 } 2302 2303 if (stat_config.metric_only && stat_config.run_count > 1) { 2304 fprintf(stderr, "--metric-only is not supported with -r\n"); 2305 goto out; 2306 } 2307 2308 if (stat_config.walltime_run_table && stat_config.run_count <= 1) { 2309 fprintf(stderr, "--table is only supported with -r\n"); 2310 parse_options_usage(stat_usage, stat_options, "r", 1); 2311 parse_options_usage(NULL, stat_options, "table", 0); 2312 goto out; 2313 } 2314 2315 if (output_fd < 0) { 2316 fprintf(stderr, "argument to --log-fd must be a > 0\n"); 2317 parse_options_usage(stat_usage, stat_options, "log-fd", 0); 2318 goto out; 2319 } 2320 2321 if (!output && !stat_config.quiet) { 2322 struct timespec tm; 2323 mode = append_file ? "a" : "w"; 2324 2325 output = fopen(output_name, mode); 2326 if (!output) { 2327 perror("failed to create output file"); 2328 return -1; 2329 } 2330 clock_gettime(CLOCK_REALTIME, &tm); 2331 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); 2332 } else if (output_fd > 0) { 2333 mode = append_file ? "a" : "w"; 2334 output = fdopen(output_fd, mode); 2335 if (!output) { 2336 perror("Failed opening logfd"); 2337 return -errno; 2338 } 2339 } 2340 2341 stat_config.output = output; 2342 2343 /* 2344 * let the spreadsheet do the pretty-printing 2345 */ 2346 if (stat_config.csv_output) { 2347 /* User explicitly passed -B? */ 2348 if (big_num_opt == 1) { 2349 fprintf(stderr, "-B option not supported with -x\n"); 2350 parse_options_usage(stat_usage, stat_options, "B", 1); 2351 parse_options_usage(NULL, stat_options, "x", 1); 2352 goto out; 2353 } else /* Nope, so disable big number formatting */ 2354 stat_config.big_num = false; 2355 } else if (big_num_opt == 0) /* User passed --no-big-num */ 2356 stat_config.big_num = false; 2357 2358 err = target__validate(&target); 2359 if (err) { 2360 target__strerror(&target, err, errbuf, BUFSIZ); 2361 pr_warning("%s\n", errbuf); 2362 } 2363 2364 setup_system_wide(argc); 2365 2366 /* 2367 * Display user/system times only for single 2368 * run and when there's specified tracee. 2369 */ 2370 if ((stat_config.run_count == 1) && target__none(&target)) 2371 stat_config.ru_display = true; 2372 2373 if (stat_config.run_count < 0) { 2374 pr_err("Run count must be a positive number\n"); 2375 parse_options_usage(stat_usage, stat_options, "r", 1); 2376 goto out; 2377 } else if (stat_config.run_count == 0) { 2378 forever = true; 2379 stat_config.run_count = 1; 2380 } 2381 2382 if (stat_config.walltime_run_table) { 2383 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); 2384 if (!stat_config.walltime_run) { 2385 pr_err("failed to setup -r option"); 2386 goto out; 2387 } 2388 } 2389 2390 if ((stat_config.aggr_mode == AGGR_THREAD) && 2391 !target__has_task(&target)) { 2392 if (!target.system_wide || target.cpu_list) { 2393 fprintf(stderr, "The --per-thread option is only " 2394 "available when monitoring via -p -t -a " 2395 "options or only --per-thread.\n"); 2396 parse_options_usage(NULL, stat_options, "p", 1); 2397 parse_options_usage(NULL, stat_options, "t", 1); 2398 goto out; 2399 } 2400 } 2401 2402 /* 2403 * no_aggr, cgroup are for system-wide only 2404 * --per-thread is aggregated per thread, we dont mix it with cpu mode 2405 */ 2406 if (((stat_config.aggr_mode != AGGR_GLOBAL && 2407 stat_config.aggr_mode != AGGR_THREAD) || 2408 (nr_cgroups || stat_config.cgroup_list)) && 2409 !target__has_cpu(&target)) { 2410 fprintf(stderr, "both cgroup and no-aggregation " 2411 "modes only available in system-wide mode\n"); 2412 2413 parse_options_usage(stat_usage, stat_options, "G", 1); 2414 parse_options_usage(NULL, stat_options, "A", 1); 2415 parse_options_usage(NULL, stat_options, "a", 1); 2416 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2417 goto out; 2418 } 2419 2420 if (stat_config.iostat_run) { 2421 status = iostat_prepare(evsel_list, &stat_config); 2422 if (status) 2423 goto out; 2424 if (iostat_mode == IOSTAT_LIST) { 2425 iostat_list(evsel_list, &stat_config); 2426 goto out; 2427 } else if (verbose) 2428 iostat_list(evsel_list, &stat_config); 2429 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) 2430 target.system_wide = true; 2431 } 2432 2433 if (add_default_attributes()) 2434 goto out; 2435 2436 if (stat_config.cgroup_list) { 2437 if (nr_cgroups > 0) { 2438 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 2439 parse_options_usage(stat_usage, stat_options, "G", 1); 2440 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2441 goto out; 2442 } 2443 2444 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, 2445 &stat_config.metric_events, true) < 0) { 2446 parse_options_usage(stat_usage, stat_options, 2447 "for-each-cgroup", 0); 2448 goto out; 2449 } 2450 } 2451 2452 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) 2453 target.per_thread = true; 2454 2455 if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) { 2456 pr_err("failed to use cpu list %s\n", target.cpu_list); 2457 goto out; 2458 } 2459 2460 target.hybrid = perf_pmu__has_hybrid(); 2461 if (evlist__create_maps(evsel_list, &target) < 0) { 2462 if (target__has_task(&target)) { 2463 pr_err("Problems finding threads of monitor\n"); 2464 parse_options_usage(stat_usage, stat_options, "p", 1); 2465 parse_options_usage(NULL, stat_options, "t", 1); 2466 } else if (target__has_cpu(&target)) { 2467 perror("failed to parse CPUs map"); 2468 parse_options_usage(stat_usage, stat_options, "C", 1); 2469 parse_options_usage(NULL, stat_options, "a", 1); 2470 } 2471 goto out; 2472 } 2473 2474 evlist__check_cpu_maps(evsel_list); 2475 2476 /* 2477 * Initialize thread_map with comm names, 2478 * so we could print it out on output. 2479 */ 2480 if (stat_config.aggr_mode == AGGR_THREAD) { 2481 thread_map__read_comms(evsel_list->core.threads); 2482 if (target.system_wide) { 2483 if (runtime_stat_new(&stat_config, 2484 perf_thread_map__nr(evsel_list->core.threads))) { 2485 goto out; 2486 } 2487 } 2488 } 2489 2490 if (stat_config.aggr_mode == AGGR_NODE) 2491 cpu__setup_cpunode_map(); 2492 2493 if (stat_config.times && interval) 2494 interval_count = true; 2495 else if (stat_config.times && !interval) { 2496 pr_err("interval-count option should be used together with " 2497 "interval-print.\n"); 2498 parse_options_usage(stat_usage, stat_options, "interval-count", 0); 2499 parse_options_usage(stat_usage, stat_options, "I", 1); 2500 goto out; 2501 } 2502 2503 if (timeout && timeout < 100) { 2504 if (timeout < 10) { 2505 pr_err("timeout must be >= 10ms.\n"); 2506 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2507 goto out; 2508 } else 2509 pr_warning("timeout < 100ms. " 2510 "The overhead percentage could be high in some cases. " 2511 "Please proceed with caution.\n"); 2512 } 2513 if (timeout && interval) { 2514 pr_err("timeout option is not supported with interval-print.\n"); 2515 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2516 parse_options_usage(stat_usage, stat_options, "I", 1); 2517 goto out; 2518 } 2519 2520 if (evlist__alloc_stats(evsel_list, interval)) 2521 goto out; 2522 2523 if (perf_stat_init_aggr_mode()) 2524 goto out; 2525 2526 /* 2527 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless 2528 * while avoiding that older tools show confusing messages. 2529 * 2530 * However for pipe sessions we need to keep it zero, 2531 * because script's perf_evsel__check_attr is triggered 2532 * by attr->sample_type != 0, and we can't run it on 2533 * stat sessions. 2534 */ 2535 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); 2536 2537 /* 2538 * We dont want to block the signals - that would cause 2539 * child tasks to inherit that and Ctrl-C would not work. 2540 * What we want is for Ctrl-C to work in the exec()-ed 2541 * task, but being ignored by perf stat itself: 2542 */ 2543 atexit(sig_atexit); 2544 if (!forever) 2545 signal(SIGINT, skip_signal); 2546 signal(SIGCHLD, skip_signal); 2547 signal(SIGALRM, skip_signal); 2548 signal(SIGABRT, skip_signal); 2549 2550 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) 2551 goto out; 2552 2553 /* Enable ignoring missing threads when -p option is defined. */ 2554 evlist__first(evsel_list)->ignore_missing_thread = target.pid; 2555 status = 0; 2556 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { 2557 if (stat_config.run_count != 1 && verbose > 0) 2558 fprintf(output, "[ perf stat: executing run #%d ... ]\n", 2559 run_idx + 1); 2560 2561 if (run_idx != 0) 2562 evlist__reset_prev_raw_counts(evsel_list); 2563 2564 status = run_perf_stat(argc, argv, run_idx); 2565 if (forever && status != -1 && !interval) { 2566 print_counters(NULL, argc, argv); 2567 perf_stat__reset_stats(); 2568 } 2569 } 2570 2571 if (!forever && status != -1 && (!interval || stat_config.summary)) 2572 print_counters(NULL, argc, argv); 2573 2574 evlist__finalize_ctlfd(evsel_list); 2575 2576 if (STAT_RECORD) { 2577 /* 2578 * We synthesize the kernel mmap record just so that older tools 2579 * don't emit warnings about not being able to resolve symbols 2580 * due to /proc/sys/kernel/kptr_restrict settings and instead provide 2581 * a saner message about no samples being in the perf.data file. 2582 * 2583 * This also serves to suppress a warning about f_header.data.size == 0 2584 * in header.c at the moment 'perf stat record' gets introduced, which 2585 * is not really needed once we start adding the stat specific PERF_RECORD_ 2586 * records, but the need to suppress the kptr_restrict messages in older 2587 * tools remain -acme 2588 */ 2589 int fd = perf_data__fd(&perf_stat.data); 2590 2591 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, 2592 process_synthesized_event, 2593 &perf_stat.session->machines.host); 2594 if (err) { 2595 pr_warning("Couldn't synthesize the kernel mmap record, harmless, " 2596 "older tools may produce warnings about this file\n."); 2597 } 2598 2599 if (!interval) { 2600 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) 2601 pr_err("failed to write stat round event\n"); 2602 } 2603 2604 if (!perf_stat.data.is_pipe) { 2605 perf_stat.session->header.data_size += perf_stat.bytes_written; 2606 perf_session__write_header(perf_stat.session, evsel_list, fd, true); 2607 } 2608 2609 evlist__close(evsel_list); 2610 perf_session__delete(perf_stat.session); 2611 } 2612 2613 perf_stat__exit_aggr_mode(); 2614 evlist__free_stats(evsel_list); 2615 out: 2616 if (stat_config.iostat_run) 2617 iostat_release(evsel_list); 2618 2619 zfree(&stat_config.walltime_run); 2620 2621 if (smi_cost && smi_reset) 2622 sysfs__write_int(FREEZE_ON_SMI_PATH, 0); 2623 2624 evlist__delete(evsel_list); 2625 2626 metricgroup__rblist_exit(&stat_config.metric_events); 2627 runtime_stat_delete(&stat_config); 2628 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); 2629 2630 return status; 2631 } 2632