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 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 /* 970 * Enable counters and exec the command: 971 */ 972 if (forks) { 973 err = enable_counters(); 974 if (err) 975 return -1; 976 evlist__start_workload(evsel_list); 977 978 t0 = rdclock(); 979 clock_gettime(CLOCK_MONOTONIC, &ref_time); 980 981 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 err = enable_counters(); 999 if (err) 1000 return -1; 1001 1002 t0 = rdclock(); 1003 clock_gettime(CLOCK_MONOTONIC, &ref_time); 1004 1005 status = dispatch_events(forks, timeout, interval, ×); 1006 } 1007 1008 disable_counters(); 1009 1010 t1 = rdclock(); 1011 1012 if (stat_config.walltime_run_table) 1013 stat_config.walltime_run[run_idx] = t1 - t0; 1014 1015 if (interval && stat_config.summary) { 1016 stat_config.interval = 0; 1017 stat_config.stop_read_counter = true; 1018 init_stats(&walltime_nsecs_stats); 1019 update_stats(&walltime_nsecs_stats, t1 - t0); 1020 1021 if (stat_config.aggr_mode == AGGR_GLOBAL) 1022 evlist__save_aggr_prev_raw_counts(evsel_list); 1023 1024 evlist__copy_prev_raw_counts(evsel_list); 1025 evlist__reset_prev_raw_counts(evsel_list); 1026 runtime_stat_reset(&stat_config); 1027 perf_stat__reset_shadow_per_stat(&rt_stat); 1028 } else { 1029 update_stats(&walltime_nsecs_stats, t1 - t0); 1030 update_rusage_stats(&ru_stats, &stat_config.ru_data); 1031 } 1032 1033 /* 1034 * Closing a group leader splits the group, and as we only disable 1035 * group leaders, results in remaining events becoming enabled. To 1036 * avoid arbitrary skew, we must read all counters before closing any 1037 * group leaders. 1038 */ 1039 read_counters(&(struct timespec) { .tv_nsec = t1-t0 }); 1040 1041 /* 1042 * We need to keep evsel_list alive, because it's processed 1043 * later the evsel_list will be closed after. 1044 */ 1045 if (!STAT_RECORD) 1046 evlist__close(evsel_list); 1047 1048 return WEXITSTATUS(status); 1049 } 1050 1051 static int run_perf_stat(int argc, const char **argv, int run_idx) 1052 { 1053 int ret; 1054 1055 if (pre_cmd) { 1056 ret = system(pre_cmd); 1057 if (ret) 1058 return ret; 1059 } 1060 1061 if (sync_run) 1062 sync(); 1063 1064 ret = __run_perf_stat(argc, argv, run_idx); 1065 if (ret) 1066 return ret; 1067 1068 if (post_cmd) { 1069 ret = system(post_cmd); 1070 if (ret) 1071 return ret; 1072 } 1073 1074 return ret; 1075 } 1076 1077 static void print_counters(struct timespec *ts, int argc, const char **argv) 1078 { 1079 /* Do not print anything if we record to the pipe. */ 1080 if (STAT_RECORD && perf_stat.data.is_pipe) 1081 return; 1082 if (stat_config.quiet) 1083 return; 1084 1085 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); 1086 } 1087 1088 static volatile int signr = -1; 1089 1090 static void skip_signal(int signo) 1091 { 1092 if ((child_pid == -1) || stat_config.interval) 1093 done = 1; 1094 1095 signr = signo; 1096 /* 1097 * render child_pid harmless 1098 * won't send SIGTERM to a random 1099 * process in case of race condition 1100 * and fast PID recycling 1101 */ 1102 child_pid = -1; 1103 } 1104 1105 static void sig_atexit(void) 1106 { 1107 sigset_t set, oset; 1108 1109 /* 1110 * avoid race condition with SIGCHLD handler 1111 * in skip_signal() which is modifying child_pid 1112 * goal is to avoid send SIGTERM to a random 1113 * process 1114 */ 1115 sigemptyset(&set); 1116 sigaddset(&set, SIGCHLD); 1117 sigprocmask(SIG_BLOCK, &set, &oset); 1118 1119 if (child_pid != -1) 1120 kill(child_pid, SIGTERM); 1121 1122 sigprocmask(SIG_SETMASK, &oset, NULL); 1123 1124 if (signr == -1) 1125 return; 1126 1127 signal(signr, SIG_DFL); 1128 kill(getpid(), signr); 1129 } 1130 1131 void perf_stat__set_big_num(int set) 1132 { 1133 stat_config.big_num = (set != 0); 1134 } 1135 1136 void perf_stat__set_no_csv_summary(int set) 1137 { 1138 stat_config.no_csv_summary = (set != 0); 1139 } 1140 1141 static int stat__set_big_num(const struct option *opt __maybe_unused, 1142 const char *s __maybe_unused, int unset) 1143 { 1144 big_num_opt = unset ? 0 : 1; 1145 perf_stat__set_big_num(!unset); 1146 return 0; 1147 } 1148 1149 static int enable_metric_only(const struct option *opt __maybe_unused, 1150 const char *s __maybe_unused, int unset) 1151 { 1152 force_metric_only = true; 1153 stat_config.metric_only = !unset; 1154 return 0; 1155 } 1156 1157 static int parse_metric_groups(const struct option *opt, 1158 const char *str, 1159 int unset __maybe_unused) 1160 { 1161 return metricgroup__parse_groups(opt, str, 1162 stat_config.metric_no_group, 1163 stat_config.metric_no_merge, 1164 &stat_config.metric_events); 1165 } 1166 1167 static int parse_control_option(const struct option *opt, 1168 const char *str, 1169 int unset __maybe_unused) 1170 { 1171 struct perf_stat_config *config = opt->value; 1172 1173 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); 1174 } 1175 1176 static int parse_stat_cgroups(const struct option *opt, 1177 const char *str, int unset) 1178 { 1179 if (stat_config.cgroup_list) { 1180 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 1181 return -1; 1182 } 1183 1184 return parse_cgroups(opt, str, unset); 1185 } 1186 1187 static int parse_hybrid_type(const struct option *opt, 1188 const char *str, 1189 int unset __maybe_unused) 1190 { 1191 struct evlist *evlist = *(struct evlist **)opt->value; 1192 1193 if (!list_empty(&evlist->core.entries)) { 1194 fprintf(stderr, "Must define cputype before events/metrics\n"); 1195 return -1; 1196 } 1197 1198 evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str); 1199 if (!evlist->hybrid_pmu_name) { 1200 fprintf(stderr, "--cputype %s is not supported!\n", str); 1201 return -1; 1202 } 1203 1204 return 0; 1205 } 1206 1207 static struct option stat_options[] = { 1208 OPT_BOOLEAN('T', "transaction", &transaction_run, 1209 "hardware transaction statistics"), 1210 OPT_CALLBACK('e', "event", &evsel_list, "event", 1211 "event selector. use 'perf list' to list available events", 1212 parse_events_option), 1213 OPT_CALLBACK(0, "filter", &evsel_list, "filter", 1214 "event filter", parse_filter), 1215 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, 1216 "child tasks do not inherit counters"), 1217 OPT_STRING('p', "pid", &target.pid, "pid", 1218 "stat events on existing process id"), 1219 OPT_STRING('t', "tid", &target.tid, "tid", 1220 "stat events on existing thread id"), 1221 #ifdef HAVE_BPF_SKEL 1222 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", 1223 "stat events on existing bpf program id"), 1224 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, 1225 "use bpf program to count events"), 1226 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", 1227 "path to perf_event_attr map"), 1228 #endif 1229 OPT_BOOLEAN('a', "all-cpus", &target.system_wide, 1230 "system-wide collection from all CPUs"), 1231 OPT_BOOLEAN('g', "group", &group, 1232 "put the counters into a counter group"), 1233 OPT_BOOLEAN(0, "scale", &stat_config.scale, 1234 "Use --no-scale to disable counter scaling for multiplexing"), 1235 OPT_INCR('v', "verbose", &verbose, 1236 "be more verbose (show counter open errors, etc)"), 1237 OPT_INTEGER('r', "repeat", &stat_config.run_count, 1238 "repeat command and print average + stddev (max: 100, forever: 0)"), 1239 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, 1240 "display details about each run (only with -r option)"), 1241 OPT_BOOLEAN('n', "null", &stat_config.null_run, 1242 "null run - dont start any counters"), 1243 OPT_INCR('d', "detailed", &detailed_run, 1244 "detailed run - start a lot of events"), 1245 OPT_BOOLEAN('S', "sync", &sync_run, 1246 "call sync() before starting a run"), 1247 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, 1248 "print large numbers with thousands\' separators", 1249 stat__set_big_num), 1250 OPT_STRING('C', "cpu", &target.cpu_list, "cpu", 1251 "list of cpus to monitor in system-wide"), 1252 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, 1253 "disable CPU count aggregation", AGGR_NONE), 1254 OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), 1255 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge, 1256 "Merge identical named hybrid events"), 1257 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", 1258 "print counts with custom separator"), 1259 OPT_CALLBACK('G', "cgroup", &evsel_list, "name", 1260 "monitor event in cgroup name only", parse_stat_cgroups), 1261 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", 1262 "expand events for each cgroup"), 1263 OPT_STRING('o', "output", &output_name, "file", "output file name"), 1264 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), 1265 OPT_INTEGER(0, "log-fd", &output_fd, 1266 "log output to fd, instead of stderr"), 1267 OPT_STRING(0, "pre", &pre_cmd, "command", 1268 "command to run prior to the measured command"), 1269 OPT_STRING(0, "post", &post_cmd, "command", 1270 "command to run after to the measured command"), 1271 OPT_UINTEGER('I', "interval-print", &stat_config.interval, 1272 "print counts at regular interval in ms " 1273 "(overhead is possible for values <= 100ms)"), 1274 OPT_INTEGER(0, "interval-count", &stat_config.times, 1275 "print counts for fixed number of times"), 1276 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, 1277 "clear screen in between new interval"), 1278 OPT_UINTEGER(0, "timeout", &stat_config.timeout, 1279 "stop workload and print counts after a timeout period in ms (>= 10ms)"), 1280 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, 1281 "aggregate counts per processor socket", AGGR_SOCKET), 1282 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, 1283 "aggregate counts per processor die", AGGR_DIE), 1284 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, 1285 "aggregate counts per physical processor core", AGGR_CORE), 1286 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, 1287 "aggregate counts per thread", AGGR_THREAD), 1288 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, 1289 "aggregate counts per numa node", AGGR_NODE), 1290 OPT_INTEGER('D', "delay", &stat_config.initial_delay, 1291 "ms to wait before starting measurement after program start (-1: start with events disabled)"), 1292 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, 1293 "Only print computed metrics. No raw values", enable_metric_only), 1294 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, 1295 "don't group metric events, impacts multiplexing"), 1296 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, 1297 "don't try to share events between metrics in a group"), 1298 OPT_BOOLEAN(0, "topdown", &topdown_run, 1299 "measure top-down statistics"), 1300 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, 1301 "Set the metrics level for the top-down statistics (0: max level)"), 1302 OPT_BOOLEAN(0, "smi-cost", &smi_cost, 1303 "measure SMI cost"), 1304 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", 1305 "monitor specified metrics or metric groups (separated by ,)", 1306 parse_metric_groups), 1307 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, 1308 "Configure all used events to run in kernel space.", 1309 PARSE_OPT_EXCLUSIVE), 1310 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, 1311 "Configure all used events to run in user space.", 1312 PARSE_OPT_EXCLUSIVE), 1313 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, 1314 "Use with 'percore' event qualifier to show the event " 1315 "counts of one hardware thread by sum up total hardware " 1316 "threads of same physical core"), 1317 OPT_BOOLEAN(0, "summary", &stat_config.summary, 1318 "print summary for interval mode"), 1319 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, 1320 "don't print 'summary' for CSV summary output"), 1321 OPT_BOOLEAN(0, "quiet", &stat_config.quiet, 1322 "don't print output (useful with record)"), 1323 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", 1324 "Only enable events on applying cpu with this type " 1325 "for hybrid platform (e.g. core or atom)", 1326 parse_hybrid_type), 1327 #ifdef HAVE_LIBPFM 1328 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", 1329 "libpfm4 event selector. use 'perf list' to list available events", 1330 parse_libpfm_events_option), 1331 #endif 1332 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", 1333 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" 1334 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" 1335 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", 1336 parse_control_option), 1337 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", 1338 "measure I/O performance metrics provided by arch/platform", 1339 iostat_parse), 1340 OPT_END() 1341 }; 1342 1343 static const char *const aggr_mode__string[] = { 1344 [AGGR_CORE] = "core", 1345 [AGGR_DIE] = "die", 1346 [AGGR_GLOBAL] = "global", 1347 [AGGR_NODE] = "node", 1348 [AGGR_NONE] = "none", 1349 [AGGR_SOCKET] = "socket", 1350 [AGGR_THREAD] = "thread", 1351 [AGGR_UNSET] = "unset", 1352 }; 1353 1354 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, 1355 struct perf_cpu cpu) 1356 { 1357 return aggr_cpu_id__socket(cpu, /*data=*/NULL); 1358 } 1359 1360 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, 1361 struct perf_cpu cpu) 1362 { 1363 return aggr_cpu_id__die(cpu, /*data=*/NULL); 1364 } 1365 1366 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, 1367 struct perf_cpu cpu) 1368 { 1369 return aggr_cpu_id__core(cpu, /*data=*/NULL); 1370 } 1371 1372 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, 1373 struct perf_cpu cpu) 1374 { 1375 return aggr_cpu_id__node(cpu, /*data=*/NULL); 1376 } 1377 1378 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, 1379 aggr_get_id_t get_id, struct perf_cpu cpu) 1380 { 1381 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1382 1383 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) 1384 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); 1385 1386 id = config->cpus_aggr_map->map[cpu.cpu]; 1387 return id; 1388 } 1389 1390 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, 1391 struct perf_cpu cpu) 1392 { 1393 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); 1394 } 1395 1396 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, 1397 struct perf_cpu cpu) 1398 { 1399 return perf_stat__get_aggr(config, perf_stat__get_die, cpu); 1400 } 1401 1402 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, 1403 struct perf_cpu cpu) 1404 { 1405 return perf_stat__get_aggr(config, perf_stat__get_core, cpu); 1406 } 1407 1408 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, 1409 struct perf_cpu cpu) 1410 { 1411 return perf_stat__get_aggr(config, perf_stat__get_node, cpu); 1412 } 1413 1414 static bool term_percore_set(void) 1415 { 1416 struct evsel *counter; 1417 1418 evlist__for_each_entry(evsel_list, counter) { 1419 if (counter->percore) 1420 return true; 1421 } 1422 1423 return false; 1424 } 1425 1426 static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) 1427 { 1428 switch (aggr_mode) { 1429 case AGGR_SOCKET: 1430 return aggr_cpu_id__socket; 1431 case AGGR_DIE: 1432 return aggr_cpu_id__die; 1433 case AGGR_CORE: 1434 return aggr_cpu_id__core; 1435 case AGGR_NODE: 1436 return aggr_cpu_id__node; 1437 case AGGR_NONE: 1438 if (term_percore_set()) 1439 return aggr_cpu_id__core; 1440 1441 return NULL; 1442 case AGGR_GLOBAL: 1443 case AGGR_THREAD: 1444 case AGGR_UNSET: 1445 default: 1446 return NULL; 1447 } 1448 } 1449 1450 static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) 1451 { 1452 switch (aggr_mode) { 1453 case AGGR_SOCKET: 1454 return perf_stat__get_socket_cached; 1455 case AGGR_DIE: 1456 return perf_stat__get_die_cached; 1457 case AGGR_CORE: 1458 return perf_stat__get_core_cached; 1459 case AGGR_NODE: 1460 return perf_stat__get_node_cached; 1461 case AGGR_NONE: 1462 if (term_percore_set()) { 1463 return perf_stat__get_core_cached; 1464 } 1465 return NULL; 1466 case AGGR_GLOBAL: 1467 case AGGR_THREAD: 1468 case AGGR_UNSET: 1469 default: 1470 return NULL; 1471 } 1472 } 1473 1474 static int perf_stat_init_aggr_mode(void) 1475 { 1476 int nr; 1477 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); 1478 1479 if (get_id) { 1480 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1481 get_id, /*data=*/NULL); 1482 if (!stat_config.aggr_map) { 1483 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1484 return -1; 1485 } 1486 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); 1487 } 1488 1489 /* 1490 * The evsel_list->cpus is the base we operate on, 1491 * taking the highest cpu number to be the size of 1492 * the aggregation translate cpumap. 1493 */ 1494 if (evsel_list->core.user_requested_cpus) 1495 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu; 1496 else 1497 nr = 0; 1498 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); 1499 return stat_config.cpus_aggr_map ? 0 : -ENOMEM; 1500 } 1501 1502 static void cpu_aggr_map__delete(struct cpu_aggr_map *map) 1503 { 1504 if (map) { 1505 WARN_ONCE(refcount_read(&map->refcnt) != 0, 1506 "cpu_aggr_map refcnt unbalanced\n"); 1507 free(map); 1508 } 1509 } 1510 1511 static void cpu_aggr_map__put(struct cpu_aggr_map *map) 1512 { 1513 if (map && refcount_dec_and_test(&map->refcnt)) 1514 cpu_aggr_map__delete(map); 1515 } 1516 1517 static void perf_stat__exit_aggr_mode(void) 1518 { 1519 cpu_aggr_map__put(stat_config.aggr_map); 1520 cpu_aggr_map__put(stat_config.cpus_aggr_map); 1521 stat_config.aggr_map = NULL; 1522 stat_config.cpus_aggr_map = NULL; 1523 } 1524 1525 static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data) 1526 { 1527 struct perf_env *env = data; 1528 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1529 1530 if (cpu.cpu != -1) 1531 id.socket = env->cpu[cpu.cpu].socket_id; 1532 1533 return id; 1534 } 1535 1536 static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) 1537 { 1538 struct perf_env *env = data; 1539 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1540 1541 if (cpu.cpu != -1) { 1542 /* 1543 * die_id is relative to socket, so start 1544 * with the socket ID and then add die to 1545 * make a unique ID. 1546 */ 1547 id.socket = env->cpu[cpu.cpu].socket_id; 1548 id.die = env->cpu[cpu.cpu].die_id; 1549 } 1550 1551 return id; 1552 } 1553 1554 static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) 1555 { 1556 struct perf_env *env = data; 1557 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1558 1559 if (cpu.cpu != -1) { 1560 /* 1561 * core_id is relative to socket and die, 1562 * we need a global id. So we set 1563 * socket, die id and core id 1564 */ 1565 id.socket = env->cpu[cpu.cpu].socket_id; 1566 id.die = env->cpu[cpu.cpu].die_id; 1567 id.core = env->cpu[cpu.cpu].core_id; 1568 } 1569 1570 return id; 1571 } 1572 1573 static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) 1574 { 1575 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1576 1577 id.node = perf_env__numa_node(data, cpu); 1578 return id; 1579 } 1580 1581 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, 1582 struct perf_cpu cpu) 1583 { 1584 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1585 } 1586 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, 1587 struct perf_cpu cpu) 1588 { 1589 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1590 } 1591 1592 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, 1593 struct perf_cpu cpu) 1594 { 1595 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1596 } 1597 1598 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, 1599 struct perf_cpu cpu) 1600 { 1601 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1602 } 1603 1604 static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) 1605 { 1606 switch (aggr_mode) { 1607 case AGGR_SOCKET: 1608 return perf_env__get_socket_aggr_by_cpu; 1609 case AGGR_DIE: 1610 return perf_env__get_die_aggr_by_cpu; 1611 case AGGR_CORE: 1612 return perf_env__get_core_aggr_by_cpu; 1613 case AGGR_NODE: 1614 return perf_env__get_node_aggr_by_cpu; 1615 case AGGR_NONE: 1616 case AGGR_GLOBAL: 1617 case AGGR_THREAD: 1618 case AGGR_UNSET: 1619 default: 1620 return NULL; 1621 } 1622 } 1623 1624 static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) 1625 { 1626 switch (aggr_mode) { 1627 case AGGR_SOCKET: 1628 return perf_stat__get_socket_file; 1629 case AGGR_DIE: 1630 return perf_stat__get_die_file; 1631 case AGGR_CORE: 1632 return perf_stat__get_core_file; 1633 case AGGR_NODE: 1634 return perf_stat__get_node_file; 1635 case AGGR_NONE: 1636 case AGGR_GLOBAL: 1637 case AGGR_THREAD: 1638 case AGGR_UNSET: 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 struct perf_event_attr default_sw_attrs[] = { 1690 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, 1691 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, 1692 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, 1693 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, 1694 }; 1695 1696 /* 1697 * Detailed stats (-d), covering the L1 and last level data caches: 1698 */ 1699 struct perf_event_attr detailed_attrs[] = { 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_ACCESS << 16) }, 1706 1707 { .type = PERF_TYPE_HW_CACHE, 1708 .config = 1709 PERF_COUNT_HW_CACHE_L1D << 0 | 1710 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1711 (PERF_COUNT_HW_CACHE_RESULT_MISS << 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_ACCESS << 16) }, 1718 1719 { .type = PERF_TYPE_HW_CACHE, 1720 .config = 1721 PERF_COUNT_HW_CACHE_LL << 0 | 1722 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1723 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1724 }; 1725 1726 /* 1727 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: 1728 */ 1729 struct perf_event_attr very_detailed_attrs[] = { 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_ACCESS << 16) }, 1736 1737 { .type = PERF_TYPE_HW_CACHE, 1738 .config = 1739 PERF_COUNT_HW_CACHE_L1I << 0 | 1740 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1741 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1742 1743 { .type = PERF_TYPE_HW_CACHE, 1744 .config = 1745 PERF_COUNT_HW_CACHE_DTLB << 0 | 1746 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1747 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1748 1749 { .type = PERF_TYPE_HW_CACHE, 1750 .config = 1751 PERF_COUNT_HW_CACHE_DTLB << 0 | 1752 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1753 (PERF_COUNT_HW_CACHE_RESULT_MISS << 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_ACCESS << 16) }, 1760 1761 { .type = PERF_TYPE_HW_CACHE, 1762 .config = 1763 PERF_COUNT_HW_CACHE_ITLB << 0 | 1764 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1765 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1766 1767 }; 1768 1769 /* 1770 * Very, very detailed stats (-d -d -d), adding prefetch events: 1771 */ 1772 struct perf_event_attr very_very_detailed_attrs[] = { 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_ACCESS << 16) }, 1779 1780 { .type = PERF_TYPE_HW_CACHE, 1781 .config = 1782 PERF_COUNT_HW_CACHE_L1D << 0 | 1783 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 1784 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1785 }; 1786 /* Set attrs if no event is selected and !null_run: */ 1787 if (stat_config.null_run) 1788 return 0; 1789 1790 if (transaction_run) { 1791 struct parse_events_error errinfo; 1792 /* Handle -T as -M transaction. Once platform specific metrics 1793 * support has been added to the json files, all architectures 1794 * will use this approach. To determine transaction support 1795 * on an architecture test for such a metric name. 1796 */ 1797 if (metricgroup__has_metric("transaction")) { 1798 struct option opt = { .value = &evsel_list }; 1799 1800 return metricgroup__parse_groups(&opt, "transaction", 1801 stat_config.metric_no_group, 1802 stat_config.metric_no_merge, 1803 &stat_config.metric_events); 1804 } 1805 1806 parse_events_error__init(&errinfo); 1807 if (pmu_have_event("cpu", "cycles-ct") && 1808 pmu_have_event("cpu", "el-start")) 1809 err = parse_events(evsel_list, transaction_attrs, 1810 &errinfo); 1811 else 1812 err = parse_events(evsel_list, 1813 transaction_limited_attrs, 1814 &errinfo); 1815 if (err) { 1816 fprintf(stderr, "Cannot set up transaction events\n"); 1817 parse_events_error__print(&errinfo, transaction_attrs); 1818 } 1819 parse_events_error__exit(&errinfo); 1820 return err ? -1 : 0; 1821 } 1822 1823 if (smi_cost) { 1824 struct parse_events_error errinfo; 1825 int smi; 1826 1827 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { 1828 fprintf(stderr, "freeze_on_smi is not supported.\n"); 1829 return -1; 1830 } 1831 1832 if (!smi) { 1833 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { 1834 fprintf(stderr, "Failed to set freeze_on_smi.\n"); 1835 return -1; 1836 } 1837 smi_reset = true; 1838 } 1839 1840 if (!pmu_have_event("msr", "aperf") || 1841 !pmu_have_event("msr", "smi")) { 1842 fprintf(stderr, "To measure SMI cost, it needs " 1843 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); 1844 return -1; 1845 } 1846 if (!force_metric_only) 1847 stat_config.metric_only = true; 1848 1849 parse_events_error__init(&errinfo); 1850 err = parse_events(evsel_list, smi_cost_attrs, &errinfo); 1851 if (err) { 1852 parse_events_error__print(&errinfo, smi_cost_attrs); 1853 fprintf(stderr, "Cannot set up SMI cost events\n"); 1854 } 1855 parse_events_error__exit(&errinfo); 1856 return err ? -1 : 0; 1857 } 1858 1859 if (topdown_run) { 1860 const char **metric_attrs = topdown_metric_attrs; 1861 unsigned int max_level = 1; 1862 char *str = NULL; 1863 bool warn = false; 1864 const char *pmu_name = "cpu"; 1865 1866 if (!force_metric_only) 1867 stat_config.metric_only = true; 1868 1869 if (perf_pmu__has_hybrid()) { 1870 if (!evsel_list->hybrid_pmu_name) { 1871 pr_warning("WARNING: default to use cpu_core topdown events\n"); 1872 evsel_list->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu("core"); 1873 } 1874 1875 pmu_name = evsel_list->hybrid_pmu_name; 1876 if (!pmu_name) 1877 return -1; 1878 } 1879 1880 if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) { 1881 metric_attrs = topdown_metric_L2_attrs; 1882 max_level = 2; 1883 } 1884 1885 if (stat_config.topdown_level > max_level) { 1886 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); 1887 return -1; 1888 } else if (!stat_config.topdown_level) 1889 stat_config.topdown_level = max_level; 1890 1891 if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) { 1892 pr_err("Out of memory\n"); 1893 return -1; 1894 } 1895 1896 if (metric_attrs[0] && str) { 1897 if (!stat_config.interval && !stat_config.metric_only) { 1898 fprintf(stat_config.output, 1899 "Topdown accuracy may decrease when measuring long periods.\n" 1900 "Please print the result regularly, e.g. -I1000\n"); 1901 } 1902 goto setup_metrics; 1903 } 1904 1905 zfree(&str); 1906 1907 if (stat_config.aggr_mode != AGGR_GLOBAL && 1908 stat_config.aggr_mode != AGGR_CORE) { 1909 pr_err("top down event configuration requires --per-core mode\n"); 1910 return -1; 1911 } 1912 stat_config.aggr_mode = AGGR_CORE; 1913 if (nr_cgroups || !target__has_cpu(&target)) { 1914 pr_err("top down event configuration requires system-wide mode (-a)\n"); 1915 return -1; 1916 } 1917 1918 if (topdown_filter_events(topdown_attrs, &str, 1919 arch_topdown_check_group(&warn), 1920 pmu_name) < 0) { 1921 pr_err("Out of memory\n"); 1922 return -1; 1923 } 1924 1925 if (topdown_attrs[0] && str) { 1926 struct parse_events_error errinfo; 1927 if (warn) 1928 arch_topdown_group_warn(); 1929 setup_metrics: 1930 parse_events_error__init(&errinfo); 1931 err = parse_events(evsel_list, str, &errinfo); 1932 if (err) { 1933 fprintf(stderr, 1934 "Cannot set up top down events %s: %d\n", 1935 str, err); 1936 parse_events_error__print(&errinfo, str); 1937 parse_events_error__exit(&errinfo); 1938 free(str); 1939 return -1; 1940 } 1941 parse_events_error__exit(&errinfo); 1942 } else { 1943 fprintf(stderr, "System does not support topdown\n"); 1944 return -1; 1945 } 1946 free(str); 1947 } 1948 1949 if (!evsel_list->core.nr_entries) { 1950 if (perf_pmu__has_hybrid()) { 1951 struct parse_events_error errinfo; 1952 const char *hybrid_str = "cycles,instructions,branches,branch-misses"; 1953 1954 if (target__has_cpu(&target)) 1955 default_sw_attrs[0].config = PERF_COUNT_SW_CPU_CLOCK; 1956 1957 if (evlist__add_default_attrs(evsel_list, 1958 default_sw_attrs) < 0) { 1959 return -1; 1960 } 1961 1962 parse_events_error__init(&errinfo); 1963 err = parse_events(evsel_list, hybrid_str, &errinfo); 1964 if (err) { 1965 fprintf(stderr, 1966 "Cannot set up hybrid events %s: %d\n", 1967 hybrid_str, err); 1968 parse_events_error__print(&errinfo, hybrid_str); 1969 } 1970 parse_events_error__exit(&errinfo); 1971 return err ? -1 : 0; 1972 } 1973 1974 if (target__has_cpu(&target)) 1975 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; 1976 1977 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) 1978 return -1; 1979 if (pmu_have_event("cpu", "stalled-cycles-frontend")) { 1980 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) 1981 return -1; 1982 } 1983 if (pmu_have_event("cpu", "stalled-cycles-backend")) { 1984 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) 1985 return -1; 1986 } 1987 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) 1988 return -1; 1989 1990 stat_config.topdown_level = TOPDOWN_MAX_LEVEL; 1991 if (arch_evlist__add_default_attrs(evsel_list) < 0) 1992 return -1; 1993 } 1994 1995 /* Detailed events get appended to the event list: */ 1996 1997 if (detailed_run < 1) 1998 return 0; 1999 2000 /* Append detailed run extra attributes: */ 2001 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) 2002 return -1; 2003 2004 if (detailed_run < 2) 2005 return 0; 2006 2007 /* Append very detailed run extra attributes: */ 2008 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) 2009 return -1; 2010 2011 if (detailed_run < 3) 2012 return 0; 2013 2014 /* Append very, very detailed run extra attributes: */ 2015 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); 2016 } 2017 2018 static const char * const stat_record_usage[] = { 2019 "perf stat record [<options>]", 2020 NULL, 2021 }; 2022 2023 static void init_features(struct perf_session *session) 2024 { 2025 int feat; 2026 2027 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) 2028 perf_header__set_feat(&session->header, feat); 2029 2030 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); 2031 perf_header__clear_feat(&session->header, HEADER_BUILD_ID); 2032 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); 2033 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); 2034 perf_header__clear_feat(&session->header, HEADER_AUXTRACE); 2035 } 2036 2037 static int __cmd_record(int argc, const char **argv) 2038 { 2039 struct perf_session *session; 2040 struct perf_data *data = &perf_stat.data; 2041 2042 argc = parse_options(argc, argv, stat_options, stat_record_usage, 2043 PARSE_OPT_STOP_AT_NON_OPTION); 2044 2045 if (output_name) 2046 data->path = output_name; 2047 2048 if (stat_config.run_count != 1 || forever) { 2049 pr_err("Cannot use -r option with perf stat record.\n"); 2050 return -1; 2051 } 2052 2053 session = perf_session__new(data, NULL); 2054 if (IS_ERR(session)) { 2055 pr_err("Perf session creation failed\n"); 2056 return PTR_ERR(session); 2057 } 2058 2059 init_features(session); 2060 2061 session->evlist = evsel_list; 2062 perf_stat.session = session; 2063 perf_stat.record = true; 2064 return argc; 2065 } 2066 2067 static int process_stat_round_event(struct perf_session *session, 2068 union perf_event *event) 2069 { 2070 struct perf_record_stat_round *stat_round = &event->stat_round; 2071 struct evsel *counter; 2072 struct timespec tsh, *ts = NULL; 2073 const char **argv = session->header.env.cmdline_argv; 2074 int argc = session->header.env.nr_cmdline; 2075 2076 evlist__for_each_entry(evsel_list, counter) 2077 perf_stat_process_counter(&stat_config, counter); 2078 2079 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) 2080 update_stats(&walltime_nsecs_stats, stat_round->time); 2081 2082 if (stat_config.interval && stat_round->time) { 2083 tsh.tv_sec = stat_round->time / NSEC_PER_SEC; 2084 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; 2085 ts = &tsh; 2086 } 2087 2088 print_counters(ts, argc, argv); 2089 return 0; 2090 } 2091 2092 static 2093 int process_stat_config_event(struct perf_session *session, 2094 union perf_event *event) 2095 { 2096 struct perf_tool *tool = session->tool; 2097 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2098 2099 perf_event__read_stat_config(&stat_config, &event->stat_config); 2100 2101 if (perf_cpu_map__empty(st->cpus)) { 2102 if (st->aggr_mode != AGGR_UNSET) 2103 pr_warning("warning: processing task data, aggregation mode not set\n"); 2104 return 0; 2105 } 2106 2107 if (st->aggr_mode != AGGR_UNSET) 2108 stat_config.aggr_mode = st->aggr_mode; 2109 2110 if (perf_stat.data.is_pipe) 2111 perf_stat_init_aggr_mode(); 2112 else 2113 perf_stat_init_aggr_mode_file(st); 2114 2115 return 0; 2116 } 2117 2118 static int set_maps(struct perf_stat *st) 2119 { 2120 if (!st->cpus || !st->threads) 2121 return 0; 2122 2123 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) 2124 return -EINVAL; 2125 2126 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); 2127 2128 if (evlist__alloc_stats(evsel_list, true)) 2129 return -ENOMEM; 2130 2131 st->maps_allocated = true; 2132 return 0; 2133 } 2134 2135 static 2136 int process_thread_map_event(struct perf_session *session, 2137 union perf_event *event) 2138 { 2139 struct perf_tool *tool = session->tool; 2140 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2141 2142 if (st->threads) { 2143 pr_warning("Extra thread map event, ignoring.\n"); 2144 return 0; 2145 } 2146 2147 st->threads = thread_map__new_event(&event->thread_map); 2148 if (!st->threads) 2149 return -ENOMEM; 2150 2151 return set_maps(st); 2152 } 2153 2154 static 2155 int process_cpu_map_event(struct perf_session *session, 2156 union perf_event *event) 2157 { 2158 struct perf_tool *tool = session->tool; 2159 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2160 struct perf_cpu_map *cpus; 2161 2162 if (st->cpus) { 2163 pr_warning("Extra cpu map event, ignoring.\n"); 2164 return 0; 2165 } 2166 2167 cpus = cpu_map__new_data(&event->cpu_map.data); 2168 if (!cpus) 2169 return -ENOMEM; 2170 2171 st->cpus = cpus; 2172 return set_maps(st); 2173 } 2174 2175 static const char * const stat_report_usage[] = { 2176 "perf stat report [<options>]", 2177 NULL, 2178 }; 2179 2180 static struct perf_stat perf_stat = { 2181 .tool = { 2182 .attr = perf_event__process_attr, 2183 .event_update = perf_event__process_event_update, 2184 .thread_map = process_thread_map_event, 2185 .cpu_map = process_cpu_map_event, 2186 .stat_config = process_stat_config_event, 2187 .stat = perf_event__process_stat_event, 2188 .stat_round = process_stat_round_event, 2189 }, 2190 .aggr_mode = AGGR_UNSET, 2191 }; 2192 2193 static int __cmd_report(int argc, const char **argv) 2194 { 2195 struct perf_session *session; 2196 const struct option options[] = { 2197 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2198 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, 2199 "aggregate counts per processor socket", AGGR_SOCKET), 2200 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, 2201 "aggregate counts per processor die", AGGR_DIE), 2202 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, 2203 "aggregate counts per physical processor core", AGGR_CORE), 2204 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, 2205 "aggregate counts per numa node", AGGR_NODE), 2206 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, 2207 "disable CPU count aggregation", AGGR_NONE), 2208 OPT_END() 2209 }; 2210 struct stat st; 2211 int ret; 2212 2213 argc = parse_options(argc, argv, options, stat_report_usage, 0); 2214 2215 if (!input_name || !strlen(input_name)) { 2216 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 2217 input_name = "-"; 2218 else 2219 input_name = "perf.data"; 2220 } 2221 2222 perf_stat.data.path = input_name; 2223 perf_stat.data.mode = PERF_DATA_MODE_READ; 2224 2225 session = perf_session__new(&perf_stat.data, &perf_stat.tool); 2226 if (IS_ERR(session)) 2227 return PTR_ERR(session); 2228 2229 perf_stat.session = session; 2230 stat_config.output = stderr; 2231 evsel_list = session->evlist; 2232 2233 ret = perf_session__process_events(session); 2234 if (ret) 2235 return ret; 2236 2237 perf_session__delete(session); 2238 return 0; 2239 } 2240 2241 static void setup_system_wide(int forks) 2242 { 2243 /* 2244 * Make system wide (-a) the default target if 2245 * no target was specified and one of following 2246 * conditions is met: 2247 * 2248 * - there's no workload specified 2249 * - there is workload specified but all requested 2250 * events are system wide events 2251 */ 2252 if (!target__none(&target)) 2253 return; 2254 2255 if (!forks) 2256 target.system_wide = true; 2257 else { 2258 struct evsel *counter; 2259 2260 evlist__for_each_entry(evsel_list, counter) { 2261 if (!counter->core.requires_cpu && 2262 strcmp(counter->name, "duration_time")) { 2263 return; 2264 } 2265 } 2266 2267 if (evsel_list->core.nr_entries) 2268 target.system_wide = true; 2269 } 2270 } 2271 2272 int cmd_stat(int argc, const char **argv) 2273 { 2274 const char * const stat_usage[] = { 2275 "perf stat [<options>] [<command>]", 2276 NULL 2277 }; 2278 int status = -EINVAL, run_idx, err; 2279 const char *mode; 2280 FILE *output = stderr; 2281 unsigned int interval, timeout; 2282 const char * const stat_subcommands[] = { "record", "report" }; 2283 char errbuf[BUFSIZ]; 2284 2285 setlocale(LC_ALL, ""); 2286 2287 evsel_list = evlist__new(); 2288 if (evsel_list == NULL) 2289 return -ENOMEM; 2290 2291 parse_events__shrink_config_terms(); 2292 2293 /* String-parsing callback-based options would segfault when negated */ 2294 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); 2295 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); 2296 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); 2297 2298 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, 2299 (const char **) stat_usage, 2300 PARSE_OPT_STOP_AT_NON_OPTION); 2301 perf_stat__collect_metric_expr(evsel_list); 2302 perf_stat__init_shadow_stats(); 2303 2304 if (stat_config.csv_sep) { 2305 stat_config.csv_output = true; 2306 if (!strcmp(stat_config.csv_sep, "\\t")) 2307 stat_config.csv_sep = "\t"; 2308 } else 2309 stat_config.csv_sep = DEFAULT_SEPARATOR; 2310 2311 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { 2312 argc = __cmd_record(argc, argv); 2313 if (argc < 0) 2314 return -1; 2315 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2316 return __cmd_report(argc, argv); 2317 2318 interval = stat_config.interval; 2319 timeout = stat_config.timeout; 2320 2321 /* 2322 * For record command the -o is already taken care of. 2323 */ 2324 if (!STAT_RECORD && output_name && strcmp(output_name, "-")) 2325 output = NULL; 2326 2327 if (output_name && output_fd) { 2328 fprintf(stderr, "cannot use both --output and --log-fd\n"); 2329 parse_options_usage(stat_usage, stat_options, "o", 1); 2330 parse_options_usage(NULL, stat_options, "log-fd", 0); 2331 goto out; 2332 } 2333 2334 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { 2335 fprintf(stderr, "--metric-only is not supported with --per-thread\n"); 2336 goto out; 2337 } 2338 2339 if (stat_config.metric_only && stat_config.run_count > 1) { 2340 fprintf(stderr, "--metric-only is not supported with -r\n"); 2341 goto out; 2342 } 2343 2344 if (stat_config.walltime_run_table && stat_config.run_count <= 1) { 2345 fprintf(stderr, "--table is only supported with -r\n"); 2346 parse_options_usage(stat_usage, stat_options, "r", 1); 2347 parse_options_usage(NULL, stat_options, "table", 0); 2348 goto out; 2349 } 2350 2351 if (output_fd < 0) { 2352 fprintf(stderr, "argument to --log-fd must be a > 0\n"); 2353 parse_options_usage(stat_usage, stat_options, "log-fd", 0); 2354 goto out; 2355 } 2356 2357 if (!output && !stat_config.quiet) { 2358 struct timespec tm; 2359 mode = append_file ? "a" : "w"; 2360 2361 output = fopen(output_name, mode); 2362 if (!output) { 2363 perror("failed to create output file"); 2364 return -1; 2365 } 2366 clock_gettime(CLOCK_REALTIME, &tm); 2367 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); 2368 } else if (output_fd > 0) { 2369 mode = append_file ? "a" : "w"; 2370 output = fdopen(output_fd, mode); 2371 if (!output) { 2372 perror("Failed opening logfd"); 2373 return -errno; 2374 } 2375 } 2376 2377 stat_config.output = output; 2378 2379 /* 2380 * let the spreadsheet do the pretty-printing 2381 */ 2382 if (stat_config.csv_output) { 2383 /* User explicitly passed -B? */ 2384 if (big_num_opt == 1) { 2385 fprintf(stderr, "-B option not supported with -x\n"); 2386 parse_options_usage(stat_usage, stat_options, "B", 1); 2387 parse_options_usage(NULL, stat_options, "x", 1); 2388 goto out; 2389 } else /* Nope, so disable big number formatting */ 2390 stat_config.big_num = false; 2391 } else if (big_num_opt == 0) /* User passed --no-big-num */ 2392 stat_config.big_num = false; 2393 2394 err = target__validate(&target); 2395 if (err) { 2396 target__strerror(&target, err, errbuf, BUFSIZ); 2397 pr_warning("%s\n", errbuf); 2398 } 2399 2400 setup_system_wide(argc); 2401 2402 /* 2403 * Display user/system times only for single 2404 * run and when there's specified tracee. 2405 */ 2406 if ((stat_config.run_count == 1) && target__none(&target)) 2407 stat_config.ru_display = true; 2408 2409 if (stat_config.run_count < 0) { 2410 pr_err("Run count must be a positive number\n"); 2411 parse_options_usage(stat_usage, stat_options, "r", 1); 2412 goto out; 2413 } else if (stat_config.run_count == 0) { 2414 forever = true; 2415 stat_config.run_count = 1; 2416 } 2417 2418 if (stat_config.walltime_run_table) { 2419 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); 2420 if (!stat_config.walltime_run) { 2421 pr_err("failed to setup -r option"); 2422 goto out; 2423 } 2424 } 2425 2426 if ((stat_config.aggr_mode == AGGR_THREAD) && 2427 !target__has_task(&target)) { 2428 if (!target.system_wide || target.cpu_list) { 2429 fprintf(stderr, "The --per-thread option is only " 2430 "available when monitoring via -p -t -a " 2431 "options or only --per-thread.\n"); 2432 parse_options_usage(NULL, stat_options, "p", 1); 2433 parse_options_usage(NULL, stat_options, "t", 1); 2434 goto out; 2435 } 2436 } 2437 2438 /* 2439 * no_aggr, cgroup are for system-wide only 2440 * --per-thread is aggregated per thread, we dont mix it with cpu mode 2441 */ 2442 if (((stat_config.aggr_mode != AGGR_GLOBAL && 2443 stat_config.aggr_mode != AGGR_THREAD) || 2444 (nr_cgroups || stat_config.cgroup_list)) && 2445 !target__has_cpu(&target)) { 2446 fprintf(stderr, "both cgroup and no-aggregation " 2447 "modes only available in system-wide mode\n"); 2448 2449 parse_options_usage(stat_usage, stat_options, "G", 1); 2450 parse_options_usage(NULL, stat_options, "A", 1); 2451 parse_options_usage(NULL, stat_options, "a", 1); 2452 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2453 goto out; 2454 } 2455 2456 if (stat_config.iostat_run) { 2457 status = iostat_prepare(evsel_list, &stat_config); 2458 if (status) 2459 goto out; 2460 if (iostat_mode == IOSTAT_LIST) { 2461 iostat_list(evsel_list, &stat_config); 2462 goto out; 2463 } else if (verbose) 2464 iostat_list(evsel_list, &stat_config); 2465 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) 2466 target.system_wide = true; 2467 } 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 ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) 2489 target.per_thread = true; 2490 2491 if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) { 2492 pr_err("failed to use cpu list %s\n", target.cpu_list); 2493 goto out; 2494 } 2495 2496 target.hybrid = perf_pmu__has_hybrid(); 2497 if (evlist__create_maps(evsel_list, &target) < 0) { 2498 if (target__has_task(&target)) { 2499 pr_err("Problems finding threads of monitor\n"); 2500 parse_options_usage(stat_usage, stat_options, "p", 1); 2501 parse_options_usage(NULL, stat_options, "t", 1); 2502 } else if (target__has_cpu(&target)) { 2503 perror("failed to parse CPUs map"); 2504 parse_options_usage(stat_usage, stat_options, "C", 1); 2505 parse_options_usage(NULL, stat_options, "a", 1); 2506 } 2507 goto out; 2508 } 2509 2510 evlist__check_cpu_maps(evsel_list); 2511 2512 /* 2513 * Initialize thread_map with comm names, 2514 * so we could print it out on output. 2515 */ 2516 if (stat_config.aggr_mode == AGGR_THREAD) { 2517 thread_map__read_comms(evsel_list->core.threads); 2518 if (target.system_wide) { 2519 if (runtime_stat_new(&stat_config, 2520 perf_thread_map__nr(evsel_list->core.threads))) { 2521 goto out; 2522 } 2523 } 2524 } 2525 2526 if (stat_config.aggr_mode == AGGR_NODE) 2527 cpu__setup_cpunode_map(); 2528 2529 if (stat_config.times && interval) 2530 interval_count = true; 2531 else if (stat_config.times && !interval) { 2532 pr_err("interval-count option should be used together with " 2533 "interval-print.\n"); 2534 parse_options_usage(stat_usage, stat_options, "interval-count", 0); 2535 parse_options_usage(stat_usage, stat_options, "I", 1); 2536 goto out; 2537 } 2538 2539 if (timeout && timeout < 100) { 2540 if (timeout < 10) { 2541 pr_err("timeout must be >= 10ms.\n"); 2542 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2543 goto out; 2544 } else 2545 pr_warning("timeout < 100ms. " 2546 "The overhead percentage could be high in some cases. " 2547 "Please proceed with caution.\n"); 2548 } 2549 if (timeout && interval) { 2550 pr_err("timeout option is not supported with interval-print.\n"); 2551 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2552 parse_options_usage(stat_usage, stat_options, "I", 1); 2553 goto out; 2554 } 2555 2556 if (evlist__alloc_stats(evsel_list, interval)) 2557 goto out; 2558 2559 if (perf_stat_init_aggr_mode()) 2560 goto out; 2561 2562 /* 2563 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless 2564 * while avoiding that older tools show confusing messages. 2565 * 2566 * However for pipe sessions we need to keep it zero, 2567 * because script's perf_evsel__check_attr is triggered 2568 * by attr->sample_type != 0, and we can't run it on 2569 * stat sessions. 2570 */ 2571 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); 2572 2573 /* 2574 * We dont want to block the signals - that would cause 2575 * child tasks to inherit that and Ctrl-C would not work. 2576 * What we want is for Ctrl-C to work in the exec()-ed 2577 * task, but being ignored by perf stat itself: 2578 */ 2579 atexit(sig_atexit); 2580 if (!forever) 2581 signal(SIGINT, skip_signal); 2582 signal(SIGCHLD, skip_signal); 2583 signal(SIGALRM, skip_signal); 2584 signal(SIGABRT, skip_signal); 2585 2586 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) 2587 goto out; 2588 2589 /* Enable ignoring missing threads when -p option is defined. */ 2590 evlist__first(evsel_list)->ignore_missing_thread = target.pid; 2591 status = 0; 2592 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { 2593 if (stat_config.run_count != 1 && verbose > 0) 2594 fprintf(output, "[ perf stat: executing run #%d ... ]\n", 2595 run_idx + 1); 2596 2597 if (run_idx != 0) 2598 evlist__reset_prev_raw_counts(evsel_list); 2599 2600 status = run_perf_stat(argc, argv, run_idx); 2601 if (forever && status != -1 && !interval) { 2602 print_counters(NULL, argc, argv); 2603 perf_stat__reset_stats(); 2604 } 2605 } 2606 2607 if (!forever && status != -1 && (!interval || stat_config.summary)) 2608 print_counters(NULL, argc, argv); 2609 2610 evlist__finalize_ctlfd(evsel_list); 2611 2612 if (STAT_RECORD) { 2613 /* 2614 * We synthesize the kernel mmap record just so that older tools 2615 * don't emit warnings about not being able to resolve symbols 2616 * due to /proc/sys/kernel/kptr_restrict settings and instead provide 2617 * a saner message about no samples being in the perf.data file. 2618 * 2619 * This also serves to suppress a warning about f_header.data.size == 0 2620 * in header.c at the moment 'perf stat record' gets introduced, which 2621 * is not really needed once we start adding the stat specific PERF_RECORD_ 2622 * records, but the need to suppress the kptr_restrict messages in older 2623 * tools remain -acme 2624 */ 2625 int fd = perf_data__fd(&perf_stat.data); 2626 2627 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, 2628 process_synthesized_event, 2629 &perf_stat.session->machines.host); 2630 if (err) { 2631 pr_warning("Couldn't synthesize the kernel mmap record, harmless, " 2632 "older tools may produce warnings about this file\n."); 2633 } 2634 2635 if (!interval) { 2636 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) 2637 pr_err("failed to write stat round event\n"); 2638 } 2639 2640 if (!perf_stat.data.is_pipe) { 2641 perf_stat.session->header.data_size += perf_stat.bytes_written; 2642 perf_session__write_header(perf_stat.session, evsel_list, fd, true); 2643 } 2644 2645 evlist__close(evsel_list); 2646 perf_session__delete(perf_stat.session); 2647 } 2648 2649 perf_stat__exit_aggr_mode(); 2650 evlist__free_stats(evsel_list); 2651 out: 2652 if (stat_config.iostat_run) 2653 iostat_release(evsel_list); 2654 2655 zfree(&stat_config.walltime_run); 2656 2657 if (smi_cost && smi_reset) 2658 sysfs__write_int(FREEZE_ON_SMI_PATH, 0); 2659 2660 evlist__delete(evsel_list); 2661 2662 metricgroup__rblist_exit(&stat_config.metric_events); 2663 runtime_stat_delete(&stat_config); 2664 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); 2665 2666 return status; 2667 } 2668