1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * builtin-stat.c 4 * 5 * Builtin stat command: Give a precise performance counters summary 6 * overview about any workload, CPU or specific PID. 7 * 8 * Sample output: 9 10 $ perf stat ./hackbench 10 11 12 Time: 0.118 13 14 Performance counter stats for './hackbench 10': 15 16 1708.761321 task-clock # 11.037 CPUs utilized 17 41,190 context-switches # 0.024 M/sec 18 6,735 CPU-migrations # 0.004 M/sec 19 17,318 page-faults # 0.010 M/sec 20 5,205,202,243 cycles # 3.046 GHz 21 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle 22 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle 23 2,603,501,247 instructions # 0.50 insns per cycle 24 # 1.48 stalled cycles per insn 25 484,357,498 branches # 283.455 M/sec 26 6,388,934 branch-misses # 1.32% of all branches 27 28 0.154822978 seconds time elapsed 29 30 * 31 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com> 32 * 33 * Improvements and fixes by: 34 * 35 * Arjan van de Ven <arjan@linux.intel.com> 36 * Yanmin Zhang <yanmin.zhang@intel.com> 37 * Wu Fengguang <fengguang.wu@intel.com> 38 * Mike Galbraith <efault@gmx.de> 39 * Paul Mackerras <paulus@samba.org> 40 * Jaswinder Singh Rajput <jaswinder@kernel.org> 41 */ 42 43 #include "builtin.h" 44 #include "util/cgroup.h" 45 #include <subcmd/parse-options.h> 46 #include "util/parse-events.h" 47 #include "util/pmus.h" 48 #include "util/pmu.h" 49 #include "util/event.h" 50 #include "util/evlist.h" 51 #include "util/evsel.h" 52 #include "util/debug.h" 53 #include "util/color.h" 54 #include "util/stat.h" 55 #include "util/header.h" 56 #include "util/cpumap.h" 57 #include "util/thread_map.h" 58 #include "util/counts.h" 59 #include "util/topdown.h" 60 #include "util/session.h" 61 #include "util/tool.h" 62 #include "util/string2.h" 63 #include "util/metricgroup.h" 64 #include "util/synthetic-events.h" 65 #include "util/target.h" 66 #include "util/time-utils.h" 67 #include "util/top.h" 68 #include "util/affinity.h" 69 #include "util/pfm.h" 70 #include "util/bpf_counter.h" 71 #include "util/iostat.h" 72 #include "util/util.h" 73 #include "asm/bug.h" 74 75 #include <linux/time64.h> 76 #include <linux/zalloc.h> 77 #include <api/fs/fs.h> 78 #include <errno.h> 79 #include <signal.h> 80 #include <stdlib.h> 81 #include <sys/prctl.h> 82 #include <inttypes.h> 83 #include <locale.h> 84 #include <math.h> 85 #include <sys/types.h> 86 #include <sys/stat.h> 87 #include <sys/wait.h> 88 #include <unistd.h> 89 #include <sys/time.h> 90 #include <sys/resource.h> 91 #include <linux/err.h> 92 93 #include <linux/ctype.h> 94 #include <perf/evlist.h> 95 #include <internal/threadmap.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 static struct evlist *evsel_list; 103 static struct parse_events_option_args parse_events_option_args = { 104 .evlistp = &evsel_list, 105 }; 106 107 static bool all_counters_use_bpf = true; 108 109 static struct target target = { 110 .uid = UINT_MAX, 111 }; 112 113 #define METRIC_ONLY_LEN 20 114 115 static volatile sig_atomic_t child_pid = -1; 116 static int detailed_run = 0; 117 static bool transaction_run; 118 static bool topdown_run = false; 119 static bool smi_cost = false; 120 static bool smi_reset = false; 121 static int big_num_opt = -1; 122 static const char *pre_cmd = NULL; 123 static const char *post_cmd = NULL; 124 static bool sync_run = false; 125 static bool forever = false; 126 static bool force_metric_only = false; 127 static struct timespec ref_time; 128 static bool append_file; 129 static bool interval_count; 130 static const char *output_name; 131 static int output_fd; 132 static char *metrics; 133 134 struct perf_stat { 135 bool record; 136 struct perf_data data; 137 struct perf_session *session; 138 u64 bytes_written; 139 struct perf_tool tool; 140 bool maps_allocated; 141 struct perf_cpu_map *cpus; 142 struct perf_thread_map *threads; 143 enum aggr_mode aggr_mode; 144 u32 aggr_level; 145 }; 146 147 static struct perf_stat perf_stat; 148 #define STAT_RECORD perf_stat.record 149 150 static volatile sig_atomic_t done = 0; 151 152 static struct perf_stat_config stat_config = { 153 .aggr_mode = AGGR_GLOBAL, 154 .aggr_level = MAX_CACHE_LVL + 1, 155 .scale = true, 156 .unit_width = 4, /* strlen("unit") */ 157 .run_count = 1, 158 .metric_only_len = METRIC_ONLY_LEN, 159 .walltime_nsecs_stats = &walltime_nsecs_stats, 160 .ru_stats = &ru_stats, 161 .big_num = true, 162 .ctl_fd = -1, 163 .ctl_fd_ack = -1, 164 .iostat_run = false, 165 }; 166 167 static bool cpus_map_matched(struct evsel *a, struct evsel *b) 168 { 169 if (!a->core.cpus && !b->core.cpus) 170 return true; 171 172 if (!a->core.cpus || !b->core.cpus) 173 return false; 174 175 if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus)) 176 return false; 177 178 for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) { 179 if (perf_cpu_map__cpu(a->core.cpus, i).cpu != 180 perf_cpu_map__cpu(b->core.cpus, i).cpu) 181 return false; 182 } 183 184 return true; 185 } 186 187 static void evlist__check_cpu_maps(struct evlist *evlist) 188 { 189 struct evsel *evsel, *warned_leader = NULL; 190 191 evlist__for_each_entry(evlist, evsel) { 192 struct evsel *leader = evsel__leader(evsel); 193 194 /* Check that leader matches cpus with each member. */ 195 if (leader == evsel) 196 continue; 197 if (cpus_map_matched(leader, evsel)) 198 continue; 199 200 /* If there's mismatch disable the group and warn user. */ 201 if (warned_leader != leader) { 202 char buf[200]; 203 204 pr_warning("WARNING: grouped events cpus do not match.\n" 205 "Events with CPUs not matching the leader will " 206 "be removed from the group.\n"); 207 evsel__group_desc(leader, buf, sizeof(buf)); 208 pr_warning(" %s\n", buf); 209 warned_leader = leader; 210 } 211 if (verbose > 0) { 212 char buf[200]; 213 214 cpu_map__snprint(leader->core.cpus, buf, sizeof(buf)); 215 pr_warning(" %s: %s\n", leader->name, buf); 216 cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf)); 217 pr_warning(" %s: %s\n", evsel->name, buf); 218 } 219 220 evsel__remove_from_group(evsel, leader); 221 } 222 } 223 224 static inline void diff_timespec(struct timespec *r, struct timespec *a, 225 struct timespec *b) 226 { 227 r->tv_sec = a->tv_sec - b->tv_sec; 228 if (a->tv_nsec < b->tv_nsec) { 229 r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; 230 r->tv_sec--; 231 } else { 232 r->tv_nsec = a->tv_nsec - b->tv_nsec ; 233 } 234 } 235 236 static void perf_stat__reset_stats(void) 237 { 238 evlist__reset_stats(evsel_list); 239 perf_stat__reset_shadow_stats(); 240 } 241 242 static int process_synthesized_event(struct perf_tool *tool __maybe_unused, 243 union perf_event *event, 244 struct perf_sample *sample __maybe_unused, 245 struct machine *machine __maybe_unused) 246 { 247 if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { 248 pr_err("failed to write perf data, error: %m\n"); 249 return -1; 250 } 251 252 perf_stat.bytes_written += event->header.size; 253 return 0; 254 } 255 256 static int write_stat_round_event(u64 tm, u64 type) 257 { 258 return perf_event__synthesize_stat_round(NULL, tm, type, 259 process_synthesized_event, 260 NULL); 261 } 262 263 #define WRITE_STAT_ROUND_EVENT(time, interval) \ 264 write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) 265 266 #define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) 267 268 static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread, 269 struct perf_counts_values *count) 270 { 271 struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread); 272 struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx); 273 274 return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, 275 process_synthesized_event, NULL); 276 } 277 278 static int read_single_counter(struct evsel *counter, int cpu_map_idx, 279 int thread, struct timespec *rs) 280 { 281 switch(counter->tool_event) { 282 case PERF_TOOL_DURATION_TIME: { 283 u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL; 284 struct perf_counts_values *count = 285 perf_counts(counter->counts, cpu_map_idx, thread); 286 count->ena = count->run = val; 287 count->val = val; 288 return 0; 289 } 290 case PERF_TOOL_USER_TIME: 291 case PERF_TOOL_SYSTEM_TIME: { 292 u64 val; 293 struct perf_counts_values *count = 294 perf_counts(counter->counts, cpu_map_idx, thread); 295 if (counter->tool_event == PERF_TOOL_USER_TIME) 296 val = ru_stats.ru_utime_usec_stat.mean; 297 else 298 val = ru_stats.ru_stime_usec_stat.mean; 299 count->ena = count->run = val; 300 count->val = val; 301 return 0; 302 } 303 default: 304 case PERF_TOOL_NONE: 305 return evsel__read_counter(counter, cpu_map_idx, thread); 306 case PERF_TOOL_MAX: 307 /* This should never be reached */ 308 return 0; 309 } 310 } 311 312 /* 313 * Read out the results of a single counter: 314 * do not aggregate counts across CPUs in system-wide mode 315 */ 316 static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx) 317 { 318 int nthreads = perf_thread_map__nr(evsel_list->core.threads); 319 int thread; 320 321 if (!counter->supported) 322 return -ENOENT; 323 324 for (thread = 0; thread < nthreads; thread++) { 325 struct perf_counts_values *count; 326 327 count = perf_counts(counter->counts, cpu_map_idx, thread); 328 329 /* 330 * The leader's group read loads data into its group members 331 * (via evsel__read_counter()) and sets their count->loaded. 332 */ 333 if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) && 334 read_single_counter(counter, cpu_map_idx, thread, rs)) { 335 counter->counts->scaled = -1; 336 perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0; 337 perf_counts(counter->counts, cpu_map_idx, thread)->run = 0; 338 return -1; 339 } 340 341 perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false); 342 343 if (STAT_RECORD) { 344 if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) { 345 pr_err("failed to write stat event\n"); 346 return -1; 347 } 348 } 349 350 if (verbose > 1) { 351 fprintf(stat_config.output, 352 "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", 353 evsel__name(counter), 354 perf_cpu_map__cpu(evsel__cpus(counter), 355 cpu_map_idx).cpu, 356 count->val, count->ena, count->run); 357 } 358 } 359 360 return 0; 361 } 362 363 static int read_affinity_counters(struct timespec *rs) 364 { 365 struct evlist_cpu_iterator evlist_cpu_itr; 366 struct affinity saved_affinity, *affinity; 367 368 if (all_counters_use_bpf) 369 return 0; 370 371 if (!target__has_cpu(&target) || target__has_per_thread(&target)) 372 affinity = NULL; 373 else if (affinity__setup(&saved_affinity) < 0) 374 return -1; 375 else 376 affinity = &saved_affinity; 377 378 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 379 struct evsel *counter = evlist_cpu_itr.evsel; 380 381 if (evsel__is_bpf(counter)) 382 continue; 383 384 if (!counter->err) { 385 counter->err = read_counter_cpu(counter, rs, 386 evlist_cpu_itr.cpu_map_idx); 387 } 388 } 389 if (affinity) 390 affinity__cleanup(&saved_affinity); 391 392 return 0; 393 } 394 395 static int read_bpf_map_counters(void) 396 { 397 struct evsel *counter; 398 int err; 399 400 evlist__for_each_entry(evsel_list, counter) { 401 if (!evsel__is_bpf(counter)) 402 continue; 403 404 err = bpf_counter__read(counter); 405 if (err) 406 return err; 407 } 408 return 0; 409 } 410 411 static int read_counters(struct timespec *rs) 412 { 413 if (!stat_config.stop_read_counter) { 414 if (read_bpf_map_counters() || 415 read_affinity_counters(rs)) 416 return -1; 417 } 418 return 0; 419 } 420 421 static void process_counters(void) 422 { 423 struct evsel *counter; 424 425 evlist__for_each_entry(evsel_list, counter) { 426 if (counter->err) 427 pr_debug("failed to read counter %s\n", counter->name); 428 if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter)) 429 pr_warning("failed to process counter %s\n", counter->name); 430 counter->err = 0; 431 } 432 433 perf_stat_merge_counters(&stat_config, evsel_list); 434 perf_stat_process_percore(&stat_config, evsel_list); 435 } 436 437 static void process_interval(void) 438 { 439 struct timespec ts, rs; 440 441 clock_gettime(CLOCK_MONOTONIC, &ts); 442 diff_timespec(&rs, &ts, &ref_time); 443 444 evlist__reset_aggr_stats(evsel_list); 445 446 if (read_counters(&rs) == 0) 447 process_counters(); 448 449 if (STAT_RECORD) { 450 if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) 451 pr_err("failed to write stat round event\n"); 452 } 453 454 init_stats(&walltime_nsecs_stats); 455 update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL); 456 print_counters(&rs, 0, NULL); 457 } 458 459 static bool handle_interval(unsigned int interval, int *times) 460 { 461 if (interval) { 462 process_interval(); 463 if (interval_count && !(--(*times))) 464 return true; 465 } 466 return false; 467 } 468 469 static int enable_counters(void) 470 { 471 struct evsel *evsel; 472 int err; 473 474 evlist__for_each_entry(evsel_list, evsel) { 475 if (!evsel__is_bpf(evsel)) 476 continue; 477 478 err = bpf_counter__enable(evsel); 479 if (err) 480 return err; 481 } 482 483 if (!target__enable_on_exec(&target)) { 484 if (!all_counters_use_bpf) 485 evlist__enable(evsel_list); 486 } 487 return 0; 488 } 489 490 static void disable_counters(void) 491 { 492 struct evsel *counter; 493 494 /* 495 * If we don't have tracee (attaching to task or cpu), counters may 496 * still be running. To get accurate group ratios, we must stop groups 497 * from counting before reading their constituent counters. 498 */ 499 if (!target__none(&target)) { 500 evlist__for_each_entry(evsel_list, counter) 501 bpf_counter__disable(counter); 502 if (!all_counters_use_bpf) 503 evlist__disable(evsel_list); 504 } 505 } 506 507 static volatile sig_atomic_t workload_exec_errno; 508 509 /* 510 * evlist__prepare_workload will send a SIGUSR1 511 * if the fork fails, since we asked by setting its 512 * want_signal to true. 513 */ 514 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, 515 void *ucontext __maybe_unused) 516 { 517 workload_exec_errno = info->si_value.sival_int; 518 } 519 520 static bool evsel__should_store_id(struct evsel *counter) 521 { 522 return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; 523 } 524 525 static bool is_target_alive(struct target *_target, 526 struct perf_thread_map *threads) 527 { 528 struct stat st; 529 int i; 530 531 if (!target__has_task(_target)) 532 return true; 533 534 for (i = 0; i < threads->nr; i++) { 535 char path[PATH_MAX]; 536 537 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), 538 threads->map[i].pid); 539 540 if (!stat(path, &st)) 541 return true; 542 } 543 544 return false; 545 } 546 547 static void process_evlist(struct evlist *evlist, unsigned int interval) 548 { 549 enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; 550 551 if (evlist__ctlfd_process(evlist, &cmd) > 0) { 552 switch (cmd) { 553 case EVLIST_CTL_CMD_ENABLE: 554 fallthrough; 555 case EVLIST_CTL_CMD_DISABLE: 556 if (interval) 557 process_interval(); 558 break; 559 case EVLIST_CTL_CMD_SNAPSHOT: 560 case EVLIST_CTL_CMD_ACK: 561 case EVLIST_CTL_CMD_UNSUPPORTED: 562 case EVLIST_CTL_CMD_EVLIST: 563 case EVLIST_CTL_CMD_STOP: 564 case EVLIST_CTL_CMD_PING: 565 default: 566 break; 567 } 568 } 569 } 570 571 static void compute_tts(struct timespec *time_start, struct timespec *time_stop, 572 int *time_to_sleep) 573 { 574 int tts = *time_to_sleep; 575 struct timespec time_diff; 576 577 diff_timespec(&time_diff, time_stop, time_start); 578 579 tts -= time_diff.tv_sec * MSEC_PER_SEC + 580 time_diff.tv_nsec / NSEC_PER_MSEC; 581 582 if (tts < 0) 583 tts = 0; 584 585 *time_to_sleep = tts; 586 } 587 588 static int dispatch_events(bool forks, int timeout, int interval, int *times) 589 { 590 int child_exited = 0, status = 0; 591 int time_to_sleep, sleep_time; 592 struct timespec time_start, time_stop; 593 594 if (interval) 595 sleep_time = interval; 596 else if (timeout) 597 sleep_time = timeout; 598 else 599 sleep_time = 1000; 600 601 time_to_sleep = sleep_time; 602 603 while (!done) { 604 if (forks) 605 child_exited = waitpid(child_pid, &status, WNOHANG); 606 else 607 child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; 608 609 if (child_exited) 610 break; 611 612 clock_gettime(CLOCK_MONOTONIC, &time_start); 613 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ 614 if (timeout || handle_interval(interval, times)) 615 break; 616 time_to_sleep = sleep_time; 617 } else { /* fd revent */ 618 process_evlist(evsel_list, interval); 619 clock_gettime(CLOCK_MONOTONIC, &time_stop); 620 compute_tts(&time_start, &time_stop, &time_to_sleep); 621 } 622 } 623 624 return status; 625 } 626 627 enum counter_recovery { 628 COUNTER_SKIP, 629 COUNTER_RETRY, 630 COUNTER_FATAL, 631 }; 632 633 static enum counter_recovery stat_handle_error(struct evsel *counter) 634 { 635 char msg[BUFSIZ]; 636 /* 637 * PPC returns ENXIO for HW counters until 2.6.37 638 * (behavior changed with commit b0a873e). 639 */ 640 if (errno == EINVAL || errno == ENOSYS || 641 errno == ENOENT || errno == EOPNOTSUPP || 642 errno == ENXIO) { 643 if (verbose > 0) 644 ui__warning("%s event is not supported by the kernel.\n", 645 evsel__name(counter)); 646 counter->supported = false; 647 /* 648 * errored is a sticky flag that means one of the counter's 649 * cpu event had a problem and needs to be reexamined. 650 */ 651 counter->errored = true; 652 653 if ((evsel__leader(counter) != counter) || 654 !(counter->core.leader->nr_members > 1)) 655 return COUNTER_SKIP; 656 } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) { 657 if (verbose > 0) 658 ui__warning("%s\n", msg); 659 return COUNTER_RETRY; 660 } else if (target__has_per_thread(&target) && 661 evsel_list->core.threads && 662 evsel_list->core.threads->err_thread != -1) { 663 /* 664 * For global --per-thread case, skip current 665 * error thread. 666 */ 667 if (!thread_map__remove(evsel_list->core.threads, 668 evsel_list->core.threads->err_thread)) { 669 evsel_list->core.threads->err_thread = -1; 670 return COUNTER_RETRY; 671 } 672 } else if (counter->skippable) { 673 if (verbose > 0) 674 ui__warning("skipping event %s that kernel failed to open .\n", 675 evsel__name(counter)); 676 counter->supported = false; 677 counter->errored = true; 678 return COUNTER_SKIP; 679 } 680 681 evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); 682 ui__error("%s\n", msg); 683 684 if (child_pid != -1) 685 kill(child_pid, SIGTERM); 686 return COUNTER_FATAL; 687 } 688 689 static int __run_perf_stat(int argc, const char **argv, int run_idx) 690 { 691 int interval = stat_config.interval; 692 int times = stat_config.times; 693 int timeout = stat_config.timeout; 694 char msg[BUFSIZ]; 695 unsigned long long t0, t1; 696 struct evsel *counter; 697 size_t l; 698 int status = 0; 699 const bool forks = (argc > 0); 700 bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; 701 struct evlist_cpu_iterator evlist_cpu_itr; 702 struct affinity saved_affinity, *affinity = NULL; 703 int err; 704 bool second_pass = false; 705 706 if (forks) { 707 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { 708 perror("failed to prepare workload"); 709 return -1; 710 } 711 child_pid = evsel_list->workload.pid; 712 } 713 714 if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { 715 if (affinity__setup(&saved_affinity) < 0) 716 return -1; 717 affinity = &saved_affinity; 718 } 719 720 evlist__for_each_entry(evsel_list, counter) { 721 counter->reset_group = false; 722 if (bpf_counter__load(counter, &target)) 723 return -1; 724 if (!(evsel__is_bperf(counter))) 725 all_counters_use_bpf = false; 726 } 727 728 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 729 counter = evlist_cpu_itr.evsel; 730 731 /* 732 * bperf calls evsel__open_per_cpu() in bperf__load(), so 733 * no need to call it again here. 734 */ 735 if (target.use_bpf) 736 break; 737 738 if (counter->reset_group || counter->errored) 739 continue; 740 if (evsel__is_bperf(counter)) 741 continue; 742 try_again: 743 if (create_perf_stat_counter(counter, &stat_config, &target, 744 evlist_cpu_itr.cpu_map_idx) < 0) { 745 746 /* 747 * Weak group failed. We cannot just undo this here 748 * because earlier CPUs might be in group mode, and the kernel 749 * doesn't support mixing group and non group reads. Defer 750 * it to later. 751 * Don't close here because we're in the wrong affinity. 752 */ 753 if ((errno == EINVAL || errno == EBADF) && 754 evsel__leader(counter) != counter && 755 counter->weak_group) { 756 evlist__reset_weak_group(evsel_list, counter, false); 757 assert(counter->reset_group); 758 second_pass = true; 759 continue; 760 } 761 762 switch (stat_handle_error(counter)) { 763 case COUNTER_FATAL: 764 return -1; 765 case COUNTER_RETRY: 766 goto try_again; 767 case COUNTER_SKIP: 768 continue; 769 default: 770 break; 771 } 772 773 } 774 counter->supported = true; 775 } 776 777 if (second_pass) { 778 /* 779 * Now redo all the weak group after closing them, 780 * and also close errored counters. 781 */ 782 783 /* First close errored or weak retry */ 784 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 785 counter = evlist_cpu_itr.evsel; 786 787 if (!counter->reset_group && !counter->errored) 788 continue; 789 790 perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx); 791 } 792 /* Now reopen weak */ 793 evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { 794 counter = evlist_cpu_itr.evsel; 795 796 if (!counter->reset_group) 797 continue; 798 try_again_reset: 799 pr_debug2("reopening weak %s\n", evsel__name(counter)); 800 if (create_perf_stat_counter(counter, &stat_config, &target, 801 evlist_cpu_itr.cpu_map_idx) < 0) { 802 803 switch (stat_handle_error(counter)) { 804 case COUNTER_FATAL: 805 return -1; 806 case COUNTER_RETRY: 807 goto try_again_reset; 808 case COUNTER_SKIP: 809 continue; 810 default: 811 break; 812 } 813 } 814 counter->supported = true; 815 } 816 } 817 affinity__cleanup(affinity); 818 819 evlist__for_each_entry(evsel_list, counter) { 820 if (!counter->supported) { 821 perf_evsel__free_fd(&counter->core); 822 continue; 823 } 824 825 l = strlen(counter->unit); 826 if (l > stat_config.unit_width) 827 stat_config.unit_width = l; 828 829 if (evsel__should_store_id(counter) && 830 evsel__store_ids(counter, evsel_list)) 831 return -1; 832 } 833 834 if (evlist__apply_filters(evsel_list, &counter)) { 835 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", 836 counter->filter, evsel__name(counter), errno, 837 str_error_r(errno, msg, sizeof(msg))); 838 return -1; 839 } 840 841 if (STAT_RECORD) { 842 int fd = perf_data__fd(&perf_stat.data); 843 844 if (is_pipe) { 845 err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); 846 } else { 847 err = perf_session__write_header(perf_stat.session, evsel_list, 848 fd, false); 849 } 850 851 if (err < 0) 852 return err; 853 854 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, 855 process_synthesized_event, is_pipe); 856 if (err < 0) 857 return err; 858 } 859 860 if (target.initial_delay) { 861 pr_info(EVLIST_DISABLED_MSG); 862 } else { 863 err = enable_counters(); 864 if (err) 865 return -1; 866 } 867 868 /* Exec the command, if any */ 869 if (forks) 870 evlist__start_workload(evsel_list); 871 872 if (target.initial_delay > 0) { 873 usleep(target.initial_delay * USEC_PER_MSEC); 874 err = enable_counters(); 875 if (err) 876 return -1; 877 878 pr_info(EVLIST_ENABLED_MSG); 879 } 880 881 t0 = rdclock(); 882 clock_gettime(CLOCK_MONOTONIC, &ref_time); 883 884 if (forks) { 885 if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) 886 status = dispatch_events(forks, timeout, interval, ×); 887 if (child_pid != -1) { 888 if (timeout) 889 kill(child_pid, SIGTERM); 890 wait4(child_pid, &status, 0, &stat_config.ru_data); 891 } 892 893 if (workload_exec_errno) { 894 const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); 895 pr_err("Workload failed: %s\n", emsg); 896 return -1; 897 } 898 899 if (WIFSIGNALED(status)) 900 psignal(WTERMSIG(status), argv[0]); 901 } else { 902 status = dispatch_events(forks, timeout, interval, ×); 903 } 904 905 disable_counters(); 906 907 t1 = rdclock(); 908 909 if (stat_config.walltime_run_table) 910 stat_config.walltime_run[run_idx] = t1 - t0; 911 912 if (interval && stat_config.summary) { 913 stat_config.interval = 0; 914 stat_config.stop_read_counter = true; 915 init_stats(&walltime_nsecs_stats); 916 update_stats(&walltime_nsecs_stats, t1 - t0); 917 918 evlist__copy_prev_raw_counts(evsel_list); 919 evlist__reset_prev_raw_counts(evsel_list); 920 evlist__reset_aggr_stats(evsel_list); 921 } else { 922 update_stats(&walltime_nsecs_stats, t1 - t0); 923 update_rusage_stats(&ru_stats, &stat_config.ru_data); 924 } 925 926 /* 927 * Closing a group leader splits the group, and as we only disable 928 * group leaders, results in remaining events becoming enabled. To 929 * avoid arbitrary skew, we must read all counters before closing any 930 * group leaders. 931 */ 932 if (read_counters(&(struct timespec) { .tv_nsec = t1-t0 }) == 0) 933 process_counters(); 934 935 /* 936 * We need to keep evsel_list alive, because it's processed 937 * later the evsel_list will be closed after. 938 */ 939 if (!STAT_RECORD) 940 evlist__close(evsel_list); 941 942 return WEXITSTATUS(status); 943 } 944 945 static int run_perf_stat(int argc, const char **argv, int run_idx) 946 { 947 int ret; 948 949 if (pre_cmd) { 950 ret = system(pre_cmd); 951 if (ret) 952 return ret; 953 } 954 955 if (sync_run) 956 sync(); 957 958 ret = __run_perf_stat(argc, argv, run_idx); 959 if (ret) 960 return ret; 961 962 if (post_cmd) { 963 ret = system(post_cmd); 964 if (ret) 965 return ret; 966 } 967 968 return ret; 969 } 970 971 static void print_counters(struct timespec *ts, int argc, const char **argv) 972 { 973 /* Do not print anything if we record to the pipe. */ 974 if (STAT_RECORD && perf_stat.data.is_pipe) 975 return; 976 if (quiet) 977 return; 978 979 evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); 980 } 981 982 static volatile sig_atomic_t signr = -1; 983 984 static void skip_signal(int signo) 985 { 986 if ((child_pid == -1) || stat_config.interval) 987 done = 1; 988 989 signr = signo; 990 /* 991 * render child_pid harmless 992 * won't send SIGTERM to a random 993 * process in case of race condition 994 * and fast PID recycling 995 */ 996 child_pid = -1; 997 } 998 999 static void sig_atexit(void) 1000 { 1001 sigset_t set, oset; 1002 1003 /* 1004 * avoid race condition with SIGCHLD handler 1005 * in skip_signal() which is modifying child_pid 1006 * goal is to avoid send SIGTERM to a random 1007 * process 1008 */ 1009 sigemptyset(&set); 1010 sigaddset(&set, SIGCHLD); 1011 sigprocmask(SIG_BLOCK, &set, &oset); 1012 1013 if (child_pid != -1) 1014 kill(child_pid, SIGTERM); 1015 1016 sigprocmask(SIG_SETMASK, &oset, NULL); 1017 1018 if (signr == -1) 1019 return; 1020 1021 signal(signr, SIG_DFL); 1022 kill(getpid(), signr); 1023 } 1024 1025 void perf_stat__set_big_num(int set) 1026 { 1027 stat_config.big_num = (set != 0); 1028 } 1029 1030 void perf_stat__set_no_csv_summary(int set) 1031 { 1032 stat_config.no_csv_summary = (set != 0); 1033 } 1034 1035 static int stat__set_big_num(const struct option *opt __maybe_unused, 1036 const char *s __maybe_unused, int unset) 1037 { 1038 big_num_opt = unset ? 0 : 1; 1039 perf_stat__set_big_num(!unset); 1040 return 0; 1041 } 1042 1043 static int enable_metric_only(const struct option *opt __maybe_unused, 1044 const char *s __maybe_unused, int unset) 1045 { 1046 force_metric_only = true; 1047 stat_config.metric_only = !unset; 1048 return 0; 1049 } 1050 1051 static int append_metric_groups(const struct option *opt __maybe_unused, 1052 const char *str, 1053 int unset __maybe_unused) 1054 { 1055 if (metrics) { 1056 char *tmp; 1057 1058 if (asprintf(&tmp, "%s,%s", metrics, str) < 0) 1059 return -ENOMEM; 1060 free(metrics); 1061 metrics = tmp; 1062 } else { 1063 metrics = strdup(str); 1064 if (!metrics) 1065 return -ENOMEM; 1066 } 1067 return 0; 1068 } 1069 1070 static int parse_control_option(const struct option *opt, 1071 const char *str, 1072 int unset __maybe_unused) 1073 { 1074 struct perf_stat_config *config = opt->value; 1075 1076 return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); 1077 } 1078 1079 static int parse_stat_cgroups(const struct option *opt, 1080 const char *str, int unset) 1081 { 1082 if (stat_config.cgroup_list) { 1083 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 1084 return -1; 1085 } 1086 1087 return parse_cgroups(opt, str, unset); 1088 } 1089 1090 static int parse_cputype(const struct option *opt, 1091 const char *str, 1092 int unset __maybe_unused) 1093 { 1094 const struct perf_pmu *pmu; 1095 struct evlist *evlist = *(struct evlist **)opt->value; 1096 1097 if (!list_empty(&evlist->core.entries)) { 1098 fprintf(stderr, "Must define cputype before events/metrics\n"); 1099 return -1; 1100 } 1101 1102 pmu = perf_pmus__pmu_for_pmu_filter(str); 1103 if (!pmu) { 1104 fprintf(stderr, "--cputype %s is not supported!\n", str); 1105 return -1; 1106 } 1107 parse_events_option_args.pmu_filter = pmu->name; 1108 1109 return 0; 1110 } 1111 1112 static int parse_cache_level(const struct option *opt, 1113 const char *str, 1114 int unset __maybe_unused) 1115 { 1116 int level; 1117 u32 *aggr_mode = (u32 *)opt->value; 1118 u32 *aggr_level = (u32 *)opt->data; 1119 1120 /* 1121 * If no string is specified, aggregate based on the topology of 1122 * Last Level Cache (LLC). Since the LLC level can change from 1123 * architecture to architecture, set level greater than 1124 * MAX_CACHE_LVL which will be interpreted as LLC. 1125 */ 1126 if (str == NULL) { 1127 level = MAX_CACHE_LVL + 1; 1128 goto out; 1129 } 1130 1131 /* 1132 * The format to specify cache level is LX or lX where X is the 1133 * cache level. 1134 */ 1135 if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) { 1136 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n", 1137 MAX_CACHE_LVL, 1138 MAX_CACHE_LVL); 1139 return -EINVAL; 1140 } 1141 1142 level = atoi(&str[1]); 1143 if (level < 1) { 1144 pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n", 1145 MAX_CACHE_LVL, 1146 MAX_CACHE_LVL); 1147 return -EINVAL; 1148 } 1149 1150 if (level > MAX_CACHE_LVL) { 1151 pr_err("perf only supports max cache level of %d.\n" 1152 "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL); 1153 return -EINVAL; 1154 } 1155 out: 1156 *aggr_mode = AGGR_CACHE; 1157 *aggr_level = level; 1158 return 0; 1159 } 1160 1161 static struct option stat_options[] = { 1162 OPT_BOOLEAN('T', "transaction", &transaction_run, 1163 "hardware transaction statistics"), 1164 OPT_CALLBACK('e', "event", &parse_events_option_args, "event", 1165 "event selector. use 'perf list' to list available events", 1166 parse_events_option), 1167 OPT_CALLBACK(0, "filter", &evsel_list, "filter", 1168 "event filter", parse_filter), 1169 OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, 1170 "child tasks do not inherit counters"), 1171 OPT_STRING('p', "pid", &target.pid, "pid", 1172 "stat events on existing process id"), 1173 OPT_STRING('t', "tid", &target.tid, "tid", 1174 "stat events on existing thread id"), 1175 #ifdef HAVE_BPF_SKEL 1176 OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", 1177 "stat events on existing bpf program id"), 1178 OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, 1179 "use bpf program to count events"), 1180 OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", 1181 "path to perf_event_attr map"), 1182 #endif 1183 OPT_BOOLEAN('a', "all-cpus", &target.system_wide, 1184 "system-wide collection from all CPUs"), 1185 OPT_BOOLEAN(0, "scale", &stat_config.scale, 1186 "Use --no-scale to disable counter scaling for multiplexing"), 1187 OPT_INCR('v', "verbose", &verbose, 1188 "be more verbose (show counter open errors, etc)"), 1189 OPT_INTEGER('r', "repeat", &stat_config.run_count, 1190 "repeat command and print average + stddev (max: 100, forever: 0)"), 1191 OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, 1192 "display details about each run (only with -r option)"), 1193 OPT_BOOLEAN('n', "null", &stat_config.null_run, 1194 "null run - dont start any counters"), 1195 OPT_INCR('d', "detailed", &detailed_run, 1196 "detailed run - start a lot of events"), 1197 OPT_BOOLEAN('S', "sync", &sync_run, 1198 "call sync() before starting a run"), 1199 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, 1200 "print large numbers with thousands\' separators", 1201 stat__set_big_num), 1202 OPT_STRING('C', "cpu", &target.cpu_list, "cpu", 1203 "list of cpus to monitor in system-wide"), 1204 OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, 1205 "disable CPU count aggregation", AGGR_NONE), 1206 OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), 1207 OPT_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge, 1208 "Merge identical named hybrid events"), 1209 OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", 1210 "print counts with custom separator"), 1211 OPT_BOOLEAN('j', "json-output", &stat_config.json_output, 1212 "print counts in JSON format"), 1213 OPT_CALLBACK('G', "cgroup", &evsel_list, "name", 1214 "monitor event in cgroup name only", parse_stat_cgroups), 1215 OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", 1216 "expand events for each cgroup"), 1217 OPT_STRING('o', "output", &output_name, "file", "output file name"), 1218 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), 1219 OPT_INTEGER(0, "log-fd", &output_fd, 1220 "log output to fd, instead of stderr"), 1221 OPT_STRING(0, "pre", &pre_cmd, "command", 1222 "command to run prior to the measured command"), 1223 OPT_STRING(0, "post", &post_cmd, "command", 1224 "command to run after to the measured command"), 1225 OPT_UINTEGER('I', "interval-print", &stat_config.interval, 1226 "print counts at regular interval in ms " 1227 "(overhead is possible for values <= 100ms)"), 1228 OPT_INTEGER(0, "interval-count", &stat_config.times, 1229 "print counts for fixed number of times"), 1230 OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, 1231 "clear screen in between new interval"), 1232 OPT_UINTEGER(0, "timeout", &stat_config.timeout, 1233 "stop workload and print counts after a timeout period in ms (>= 10ms)"), 1234 OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, 1235 "aggregate counts per processor socket", AGGR_SOCKET), 1236 OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, 1237 "aggregate counts per processor die", AGGR_DIE), 1238 OPT_CALLBACK_OPTARG(0, "per-cache", &stat_config.aggr_mode, &stat_config.aggr_level, 1239 "cache level", "aggregate count at this cache level (Default: LLC)", 1240 parse_cache_level), 1241 OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, 1242 "aggregate counts per physical processor core", AGGR_CORE), 1243 OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, 1244 "aggregate counts per thread", AGGR_THREAD), 1245 OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, 1246 "aggregate counts per numa node", AGGR_NODE), 1247 OPT_INTEGER('D', "delay", &target.initial_delay, 1248 "ms to wait before starting measurement after program start (-1: start with events disabled)"), 1249 OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, 1250 "Only print computed metrics. No raw values", enable_metric_only), 1251 OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, 1252 "don't group metric events, impacts multiplexing"), 1253 OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, 1254 "don't try to share events between metrics in a group"), 1255 OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold, 1256 "don't try to share events between metrics in a group "), 1257 OPT_BOOLEAN(0, "topdown", &topdown_run, 1258 "measure top-down statistics"), 1259 OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, 1260 "Set the metrics level for the top-down statistics (0: max level)"), 1261 OPT_BOOLEAN(0, "smi-cost", &smi_cost, 1262 "measure SMI cost"), 1263 OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", 1264 "monitor specified metrics or metric groups (separated by ,)", 1265 append_metric_groups), 1266 OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, 1267 "Configure all used events to run in kernel space.", 1268 PARSE_OPT_EXCLUSIVE), 1269 OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, 1270 "Configure all used events to run in user space.", 1271 PARSE_OPT_EXCLUSIVE), 1272 OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, 1273 "Use with 'percore' event qualifier to show the event " 1274 "counts of one hardware thread by sum up total hardware " 1275 "threads of same physical core"), 1276 OPT_BOOLEAN(0, "summary", &stat_config.summary, 1277 "print summary for interval mode"), 1278 OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, 1279 "don't print 'summary' for CSV summary output"), 1280 OPT_BOOLEAN(0, "quiet", &quiet, 1281 "don't print any output, messages or warnings (useful with record)"), 1282 OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", 1283 "Only enable events on applying cpu with this type " 1284 "for hybrid platform (e.g. core or atom)", 1285 parse_cputype), 1286 #ifdef HAVE_LIBPFM 1287 OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", 1288 "libpfm4 event selector. use 'perf list' to list available events", 1289 parse_libpfm_events_option), 1290 #endif 1291 OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", 1292 "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" 1293 "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" 1294 "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", 1295 parse_control_option), 1296 OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", 1297 "measure I/O performance metrics provided by arch/platform", 1298 iostat_parse), 1299 OPT_END() 1300 }; 1301 1302 /** 1303 * Calculate the cache instance ID from the map in 1304 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list 1305 * Cache instance ID is the first CPU reported in the shared_cpu_list file. 1306 */ 1307 static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map) 1308 { 1309 int id; 1310 struct perf_cpu_map *cpu_map = perf_cpu_map__new(map); 1311 1312 /* 1313 * If the map contains no CPU, consider the current CPU to 1314 * be the first online CPU in the cache domain else use the 1315 * first online CPU of the cache domain as the ID. 1316 */ 1317 if (perf_cpu_map__empty(cpu_map)) 1318 id = cpu.cpu; 1319 else 1320 id = perf_cpu_map__cpu(cpu_map, 0).cpu; 1321 1322 /* Free the perf_cpu_map used to find the cache ID */ 1323 perf_cpu_map__put(cpu_map); 1324 1325 return id; 1326 } 1327 1328 /** 1329 * cpu__get_cache_id - Returns 0 if successful in populating the 1330 * cache level and cache id. Cache level is read from 1331 * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID 1332 * is the first CPU reported by 1333 * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list 1334 */ 1335 static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache) 1336 { 1337 int ret = 0; 1338 u32 cache_level = stat_config.aggr_level; 1339 struct cpu_cache_level caches[MAX_CACHE_LVL]; 1340 u32 i = 0, caches_cnt = 0; 1341 1342 cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level; 1343 cache->cache = -1; 1344 1345 ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt); 1346 if (ret) { 1347 /* 1348 * If caches_cnt is not 0, cpu_cache_level data 1349 * was allocated when building the topology. 1350 * Free the allocated data before returning. 1351 */ 1352 if (caches_cnt) 1353 goto free_caches; 1354 1355 return ret; 1356 } 1357 1358 if (!caches_cnt) 1359 return -1; 1360 1361 /* 1362 * Save the data for the highest level if no 1363 * level was specified by the user. 1364 */ 1365 if (cache_level > MAX_CACHE_LVL) { 1366 int max_level_index = 0; 1367 1368 for (i = 1; i < caches_cnt; ++i) { 1369 if (caches[i].level > caches[max_level_index].level) 1370 max_level_index = i; 1371 } 1372 1373 cache->cache_lvl = caches[max_level_index].level; 1374 cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map); 1375 1376 /* Reset i to 0 to free entire caches[] */ 1377 i = 0; 1378 goto free_caches; 1379 } 1380 1381 for (i = 0; i < caches_cnt; ++i) { 1382 if (caches[i].level == cache_level) { 1383 cache->cache_lvl = cache_level; 1384 cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map); 1385 } 1386 1387 cpu_cache_level__free(&caches[i]); 1388 } 1389 1390 free_caches: 1391 /* 1392 * Free all the allocated cpu_cache_level data. 1393 */ 1394 while (i < caches_cnt) 1395 cpu_cache_level__free(&caches[i++]); 1396 1397 return ret; 1398 } 1399 1400 /** 1401 * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache 1402 * level, die and socket populated with the cache instache ID, cache level, 1403 * die and socket for cpu. The function signature is compatible with 1404 * aggr_cpu_id_get_t. 1405 */ 1406 static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data) 1407 { 1408 int ret; 1409 struct aggr_cpu_id id; 1410 struct perf_cache cache; 1411 1412 id = aggr_cpu_id__die(cpu, data); 1413 if (aggr_cpu_id__is_empty(&id)) 1414 return id; 1415 1416 ret = cpu__get_cache_details(cpu, &cache); 1417 if (ret) 1418 return id; 1419 1420 id.cache_lvl = cache.cache_lvl; 1421 id.cache = cache.cache; 1422 return id; 1423 } 1424 1425 static const char *const aggr_mode__string[] = { 1426 [AGGR_CORE] = "core", 1427 [AGGR_CACHE] = "cache", 1428 [AGGR_DIE] = "die", 1429 [AGGR_GLOBAL] = "global", 1430 [AGGR_NODE] = "node", 1431 [AGGR_NONE] = "none", 1432 [AGGR_SOCKET] = "socket", 1433 [AGGR_THREAD] = "thread", 1434 [AGGR_UNSET] = "unset", 1435 }; 1436 1437 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, 1438 struct perf_cpu cpu) 1439 { 1440 return aggr_cpu_id__socket(cpu, /*data=*/NULL); 1441 } 1442 1443 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, 1444 struct perf_cpu cpu) 1445 { 1446 return aggr_cpu_id__die(cpu, /*data=*/NULL); 1447 } 1448 1449 static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused, 1450 struct perf_cpu cpu) 1451 { 1452 return aggr_cpu_id__cache(cpu, /*data=*/NULL); 1453 } 1454 1455 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, 1456 struct perf_cpu cpu) 1457 { 1458 return aggr_cpu_id__core(cpu, /*data=*/NULL); 1459 } 1460 1461 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, 1462 struct perf_cpu cpu) 1463 { 1464 return aggr_cpu_id__node(cpu, /*data=*/NULL); 1465 } 1466 1467 static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused, 1468 struct perf_cpu cpu) 1469 { 1470 return aggr_cpu_id__global(cpu, /*data=*/NULL); 1471 } 1472 1473 static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused, 1474 struct perf_cpu cpu) 1475 { 1476 return aggr_cpu_id__cpu(cpu, /*data=*/NULL); 1477 } 1478 1479 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, 1480 aggr_get_id_t get_id, struct perf_cpu cpu) 1481 { 1482 struct aggr_cpu_id id; 1483 1484 /* per-process mode - should use global aggr mode */ 1485 if (cpu.cpu == -1) 1486 return get_id(config, cpu); 1487 1488 if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) 1489 config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); 1490 1491 id = config->cpus_aggr_map->map[cpu.cpu]; 1492 return id; 1493 } 1494 1495 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, 1496 struct perf_cpu cpu) 1497 { 1498 return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); 1499 } 1500 1501 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, 1502 struct perf_cpu cpu) 1503 { 1504 return perf_stat__get_aggr(config, perf_stat__get_die, cpu); 1505 } 1506 1507 static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config, 1508 struct perf_cpu cpu) 1509 { 1510 return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu); 1511 } 1512 1513 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, 1514 struct perf_cpu cpu) 1515 { 1516 return perf_stat__get_aggr(config, perf_stat__get_core, cpu); 1517 } 1518 1519 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, 1520 struct perf_cpu cpu) 1521 { 1522 return perf_stat__get_aggr(config, perf_stat__get_node, cpu); 1523 } 1524 1525 static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config, 1526 struct perf_cpu cpu) 1527 { 1528 return perf_stat__get_aggr(config, perf_stat__get_global, cpu); 1529 } 1530 1531 static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config, 1532 struct perf_cpu cpu) 1533 { 1534 return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu); 1535 } 1536 1537 static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) 1538 { 1539 switch (aggr_mode) { 1540 case AGGR_SOCKET: 1541 return aggr_cpu_id__socket; 1542 case AGGR_DIE: 1543 return aggr_cpu_id__die; 1544 case AGGR_CACHE: 1545 return aggr_cpu_id__cache; 1546 case AGGR_CORE: 1547 return aggr_cpu_id__core; 1548 case AGGR_NODE: 1549 return aggr_cpu_id__node; 1550 case AGGR_NONE: 1551 return aggr_cpu_id__cpu; 1552 case AGGR_GLOBAL: 1553 return aggr_cpu_id__global; 1554 case AGGR_THREAD: 1555 case AGGR_UNSET: 1556 case AGGR_MAX: 1557 default: 1558 return NULL; 1559 } 1560 } 1561 1562 static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) 1563 { 1564 switch (aggr_mode) { 1565 case AGGR_SOCKET: 1566 return perf_stat__get_socket_cached; 1567 case AGGR_DIE: 1568 return perf_stat__get_die_cached; 1569 case AGGR_CACHE: 1570 return perf_stat__get_cache_id_cached; 1571 case AGGR_CORE: 1572 return perf_stat__get_core_cached; 1573 case AGGR_NODE: 1574 return perf_stat__get_node_cached; 1575 case AGGR_NONE: 1576 return perf_stat__get_cpu_cached; 1577 case AGGR_GLOBAL: 1578 return perf_stat__get_global_cached; 1579 case AGGR_THREAD: 1580 case AGGR_UNSET: 1581 case AGGR_MAX: 1582 default: 1583 return NULL; 1584 } 1585 } 1586 1587 static int perf_stat_init_aggr_mode(void) 1588 { 1589 int nr; 1590 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); 1591 1592 if (get_id) { 1593 bool needs_sort = stat_config.aggr_mode != AGGR_NONE; 1594 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1595 get_id, /*data=*/NULL, needs_sort); 1596 if (!stat_config.aggr_map) { 1597 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1598 return -1; 1599 } 1600 stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); 1601 } 1602 1603 if (stat_config.aggr_mode == AGGR_THREAD) { 1604 nr = perf_thread_map__nr(evsel_list->core.threads); 1605 stat_config.aggr_map = cpu_aggr_map__empty_new(nr); 1606 if (stat_config.aggr_map == NULL) 1607 return -ENOMEM; 1608 1609 for (int s = 0; s < nr; s++) { 1610 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1611 1612 id.thread_idx = s; 1613 stat_config.aggr_map->map[s] = id; 1614 } 1615 return 0; 1616 } 1617 1618 /* 1619 * The evsel_list->cpus is the base we operate on, 1620 * taking the highest cpu number to be the size of 1621 * the aggregation translate cpumap. 1622 */ 1623 if (evsel_list->core.user_requested_cpus) 1624 nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu; 1625 else 1626 nr = 0; 1627 stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); 1628 return stat_config.cpus_aggr_map ? 0 : -ENOMEM; 1629 } 1630 1631 static void cpu_aggr_map__delete(struct cpu_aggr_map *map) 1632 { 1633 if (map) { 1634 WARN_ONCE(refcount_read(&map->refcnt) != 0, 1635 "cpu_aggr_map refcnt unbalanced\n"); 1636 free(map); 1637 } 1638 } 1639 1640 static void cpu_aggr_map__put(struct cpu_aggr_map *map) 1641 { 1642 if (map && refcount_dec_and_test(&map->refcnt)) 1643 cpu_aggr_map__delete(map); 1644 } 1645 1646 static void perf_stat__exit_aggr_mode(void) 1647 { 1648 cpu_aggr_map__put(stat_config.aggr_map); 1649 cpu_aggr_map__put(stat_config.cpus_aggr_map); 1650 stat_config.aggr_map = NULL; 1651 stat_config.cpus_aggr_map = NULL; 1652 } 1653 1654 static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data) 1655 { 1656 struct perf_env *env = data; 1657 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1658 1659 if (cpu.cpu != -1) 1660 id.socket = env->cpu[cpu.cpu].socket_id; 1661 1662 return id; 1663 } 1664 1665 static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) 1666 { 1667 struct perf_env *env = data; 1668 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1669 1670 if (cpu.cpu != -1) { 1671 /* 1672 * die_id is relative to socket, so start 1673 * with the socket ID and then add die to 1674 * make a unique ID. 1675 */ 1676 id.socket = env->cpu[cpu.cpu].socket_id; 1677 id.die = env->cpu[cpu.cpu].die_id; 1678 } 1679 1680 return id; 1681 } 1682 1683 static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env, 1684 u32 cache_level, struct aggr_cpu_id *id) 1685 { 1686 int i; 1687 int caches_cnt = env->caches_cnt; 1688 struct cpu_cache_level *caches = env->caches; 1689 1690 id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level; 1691 id->cache = -1; 1692 1693 if (!caches_cnt) 1694 return; 1695 1696 for (i = caches_cnt - 1; i > -1; --i) { 1697 struct perf_cpu_map *cpu_map; 1698 int map_contains_cpu; 1699 1700 /* 1701 * If user has not specified a level, find the fist level with 1702 * the cpu in the map. Since building the map is expensive, do 1703 * this only if levels match. 1704 */ 1705 if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level) 1706 continue; 1707 1708 cpu_map = perf_cpu_map__new(caches[i].map); 1709 map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu); 1710 perf_cpu_map__put(cpu_map); 1711 1712 if (map_contains_cpu != -1) { 1713 id->cache_lvl = caches[i].level; 1714 id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map); 1715 return; 1716 } 1717 } 1718 } 1719 1720 static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu, 1721 void *data) 1722 { 1723 struct perf_env *env = data; 1724 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1725 1726 if (cpu.cpu != -1) { 1727 u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level; 1728 1729 id.socket = env->cpu[cpu.cpu].socket_id; 1730 id.die = env->cpu[cpu.cpu].die_id; 1731 perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id); 1732 } 1733 1734 return id; 1735 } 1736 1737 static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) 1738 { 1739 struct perf_env *env = data; 1740 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1741 1742 if (cpu.cpu != -1) { 1743 /* 1744 * core_id is relative to socket and die, 1745 * we need a global id. So we set 1746 * socket, die id and core id 1747 */ 1748 id.socket = env->cpu[cpu.cpu].socket_id; 1749 id.die = env->cpu[cpu.cpu].die_id; 1750 id.core = env->cpu[cpu.cpu].core_id; 1751 } 1752 1753 return id; 1754 } 1755 1756 static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data) 1757 { 1758 struct perf_env *env = data; 1759 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1760 1761 if (cpu.cpu != -1) { 1762 /* 1763 * core_id is relative to socket and die, 1764 * we need a global id. So we set 1765 * socket, die id and core id 1766 */ 1767 id.socket = env->cpu[cpu.cpu].socket_id; 1768 id.die = env->cpu[cpu.cpu].die_id; 1769 id.core = env->cpu[cpu.cpu].core_id; 1770 id.cpu = cpu; 1771 } 1772 1773 return id; 1774 } 1775 1776 static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) 1777 { 1778 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1779 1780 id.node = perf_env__numa_node(data, cpu); 1781 return id; 1782 } 1783 1784 static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused, 1785 void *data __maybe_unused) 1786 { 1787 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1788 1789 /* it always aggregates to the cpu 0 */ 1790 id.cpu = (struct perf_cpu){ .cpu = 0 }; 1791 return id; 1792 } 1793 1794 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, 1795 struct perf_cpu cpu) 1796 { 1797 return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1798 } 1799 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, 1800 struct perf_cpu cpu) 1801 { 1802 return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1803 } 1804 1805 static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused, 1806 struct perf_cpu cpu) 1807 { 1808 return perf_env__get_cache_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1809 } 1810 1811 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, 1812 struct perf_cpu cpu) 1813 { 1814 return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1815 } 1816 1817 static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused, 1818 struct perf_cpu cpu) 1819 { 1820 return perf_env__get_cpu_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1821 } 1822 1823 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, 1824 struct perf_cpu cpu) 1825 { 1826 return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1827 } 1828 1829 static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused, 1830 struct perf_cpu cpu) 1831 { 1832 return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env); 1833 } 1834 1835 static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) 1836 { 1837 switch (aggr_mode) { 1838 case AGGR_SOCKET: 1839 return perf_env__get_socket_aggr_by_cpu; 1840 case AGGR_DIE: 1841 return perf_env__get_die_aggr_by_cpu; 1842 case AGGR_CACHE: 1843 return perf_env__get_cache_aggr_by_cpu; 1844 case AGGR_CORE: 1845 return perf_env__get_core_aggr_by_cpu; 1846 case AGGR_NODE: 1847 return perf_env__get_node_aggr_by_cpu; 1848 case AGGR_GLOBAL: 1849 return perf_env__get_global_aggr_by_cpu; 1850 case AGGR_NONE: 1851 return perf_env__get_cpu_aggr_by_cpu; 1852 case AGGR_THREAD: 1853 case AGGR_UNSET: 1854 case AGGR_MAX: 1855 default: 1856 return NULL; 1857 } 1858 } 1859 1860 static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) 1861 { 1862 switch (aggr_mode) { 1863 case AGGR_SOCKET: 1864 return perf_stat__get_socket_file; 1865 case AGGR_DIE: 1866 return perf_stat__get_die_file; 1867 case AGGR_CACHE: 1868 return perf_stat__get_cache_file; 1869 case AGGR_CORE: 1870 return perf_stat__get_core_file; 1871 case AGGR_NODE: 1872 return perf_stat__get_node_file; 1873 case AGGR_GLOBAL: 1874 return perf_stat__get_global_file; 1875 case AGGR_NONE: 1876 return perf_stat__get_cpu_file; 1877 case AGGR_THREAD: 1878 case AGGR_UNSET: 1879 case AGGR_MAX: 1880 default: 1881 return NULL; 1882 } 1883 } 1884 1885 static int perf_stat_init_aggr_mode_file(struct perf_stat *st) 1886 { 1887 struct perf_env *env = &st->session->header.env; 1888 aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); 1889 bool needs_sort = stat_config.aggr_mode != AGGR_NONE; 1890 1891 if (stat_config.aggr_mode == AGGR_THREAD) { 1892 int nr = perf_thread_map__nr(evsel_list->core.threads); 1893 1894 stat_config.aggr_map = cpu_aggr_map__empty_new(nr); 1895 if (stat_config.aggr_map == NULL) 1896 return -ENOMEM; 1897 1898 for (int s = 0; s < nr; s++) { 1899 struct aggr_cpu_id id = aggr_cpu_id__empty(); 1900 1901 id.thread_idx = s; 1902 stat_config.aggr_map->map[s] = id; 1903 } 1904 return 0; 1905 } 1906 1907 if (!get_id) 1908 return 0; 1909 1910 stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, 1911 get_id, env, needs_sort); 1912 if (!stat_config.aggr_map) { 1913 pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); 1914 return -1; 1915 } 1916 stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode); 1917 return 0; 1918 } 1919 1920 /* 1921 * Add default attributes, if there were no attributes specified or 1922 * if -d/--detailed, -d -d or -d -d -d is used: 1923 */ 1924 static int add_default_attributes(void) 1925 { 1926 struct perf_event_attr default_attrs0[] = { 1927 1928 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, 1929 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, 1930 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, 1931 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, 1932 1933 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, 1934 }; 1935 struct perf_event_attr frontend_attrs[] = { 1936 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, 1937 }; 1938 struct perf_event_attr backend_attrs[] = { 1939 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, 1940 }; 1941 struct perf_event_attr default_attrs1[] = { 1942 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, 1943 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, 1944 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, 1945 1946 }; 1947 1948 /* 1949 * Detailed stats (-d), covering the L1 and last level data caches: 1950 */ 1951 struct perf_event_attr detailed_attrs[] = { 1952 1953 { .type = PERF_TYPE_HW_CACHE, 1954 .config = 1955 PERF_COUNT_HW_CACHE_L1D << 0 | 1956 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1957 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1958 1959 { .type = PERF_TYPE_HW_CACHE, 1960 .config = 1961 PERF_COUNT_HW_CACHE_L1D << 0 | 1962 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1963 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1964 1965 { .type = PERF_TYPE_HW_CACHE, 1966 .config = 1967 PERF_COUNT_HW_CACHE_LL << 0 | 1968 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1969 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1970 1971 { .type = PERF_TYPE_HW_CACHE, 1972 .config = 1973 PERF_COUNT_HW_CACHE_LL << 0 | 1974 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1975 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1976 }; 1977 1978 /* 1979 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: 1980 */ 1981 struct perf_event_attr very_detailed_attrs[] = { 1982 1983 { .type = PERF_TYPE_HW_CACHE, 1984 .config = 1985 PERF_COUNT_HW_CACHE_L1I << 0 | 1986 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1987 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 1988 1989 { .type = PERF_TYPE_HW_CACHE, 1990 .config = 1991 PERF_COUNT_HW_CACHE_L1I << 0 | 1992 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1993 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 1994 1995 { .type = PERF_TYPE_HW_CACHE, 1996 .config = 1997 PERF_COUNT_HW_CACHE_DTLB << 0 | 1998 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 1999 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 2000 2001 { .type = PERF_TYPE_HW_CACHE, 2002 .config = 2003 PERF_COUNT_HW_CACHE_DTLB << 0 | 2004 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 2005 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 2006 2007 { .type = PERF_TYPE_HW_CACHE, 2008 .config = 2009 PERF_COUNT_HW_CACHE_ITLB << 0 | 2010 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 2011 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 2012 2013 { .type = PERF_TYPE_HW_CACHE, 2014 .config = 2015 PERF_COUNT_HW_CACHE_ITLB << 0 | 2016 (PERF_COUNT_HW_CACHE_OP_READ << 8) | 2017 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 2018 2019 }; 2020 2021 /* 2022 * Very, very detailed stats (-d -d -d), adding prefetch events: 2023 */ 2024 struct perf_event_attr very_very_detailed_attrs[] = { 2025 2026 { .type = PERF_TYPE_HW_CACHE, 2027 .config = 2028 PERF_COUNT_HW_CACHE_L1D << 0 | 2029 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 2030 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, 2031 2032 { .type = PERF_TYPE_HW_CACHE, 2033 .config = 2034 PERF_COUNT_HW_CACHE_L1D << 0 | 2035 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | 2036 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, 2037 }; 2038 2039 struct perf_event_attr default_null_attrs[] = {}; 2040 const char *pmu = parse_events_option_args.pmu_filter ?: "all"; 2041 2042 /* Set attrs if no event is selected and !null_run: */ 2043 if (stat_config.null_run) 2044 return 0; 2045 2046 if (transaction_run) { 2047 /* Handle -T as -M transaction. Once platform specific metrics 2048 * support has been added to the json files, all architectures 2049 * will use this approach. To determine transaction support 2050 * on an architecture test for such a metric name. 2051 */ 2052 if (!metricgroup__has_metric(pmu, "transaction")) { 2053 pr_err("Missing transaction metrics"); 2054 return -1; 2055 } 2056 return metricgroup__parse_groups(evsel_list, pmu, "transaction", 2057 stat_config.metric_no_group, 2058 stat_config.metric_no_merge, 2059 stat_config.metric_no_threshold, 2060 stat_config.user_requested_cpu_list, 2061 stat_config.system_wide, 2062 &stat_config.metric_events); 2063 } 2064 2065 if (smi_cost) { 2066 int smi; 2067 2068 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { 2069 pr_err("freeze_on_smi is not supported."); 2070 return -1; 2071 } 2072 2073 if (!smi) { 2074 if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { 2075 fprintf(stderr, "Failed to set freeze_on_smi.\n"); 2076 return -1; 2077 } 2078 smi_reset = true; 2079 } 2080 2081 if (!metricgroup__has_metric(pmu, "smi")) { 2082 pr_err("Missing smi metrics"); 2083 return -1; 2084 } 2085 2086 if (!force_metric_only) 2087 stat_config.metric_only = true; 2088 2089 return metricgroup__parse_groups(evsel_list, pmu, "smi", 2090 stat_config.metric_no_group, 2091 stat_config.metric_no_merge, 2092 stat_config.metric_no_threshold, 2093 stat_config.user_requested_cpu_list, 2094 stat_config.system_wide, 2095 &stat_config.metric_events); 2096 } 2097 2098 if (topdown_run) { 2099 unsigned int max_level = metricgroups__topdown_max_level(); 2100 char str[] = "TopdownL1"; 2101 2102 if (!force_metric_only) 2103 stat_config.metric_only = true; 2104 2105 if (!max_level) { 2106 pr_err("Topdown requested but the topdown metric groups aren't present.\n" 2107 "(See perf list the metric groups have names like TopdownL1)"); 2108 return -1; 2109 } 2110 if (stat_config.topdown_level > max_level) { 2111 pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); 2112 return -1; 2113 } else if (!stat_config.topdown_level) 2114 stat_config.topdown_level = 1; 2115 2116 if (!stat_config.interval && !stat_config.metric_only) { 2117 fprintf(stat_config.output, 2118 "Topdown accuracy may decrease when measuring long periods.\n" 2119 "Please print the result regularly, e.g. -I1000\n"); 2120 } 2121 str[8] = stat_config.topdown_level + '0'; 2122 if (metricgroup__parse_groups(evsel_list, 2123 pmu, str, 2124 /*metric_no_group=*/false, 2125 /*metric_no_merge=*/false, 2126 /*metric_no_threshold=*/true, 2127 stat_config.user_requested_cpu_list, 2128 stat_config.system_wide, 2129 &stat_config.metric_events) < 0) 2130 return -1; 2131 } 2132 2133 if (!stat_config.topdown_level) 2134 stat_config.topdown_level = 1; 2135 2136 if (!evsel_list->core.nr_entries) { 2137 /* No events so add defaults. */ 2138 if (target__has_cpu(&target)) 2139 default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; 2140 2141 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) 2142 return -1; 2143 if (perf_pmus__have_event("cpu", "stalled-cycles-frontend")) { 2144 if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) 2145 return -1; 2146 } 2147 if (perf_pmus__have_event("cpu", "stalled-cycles-backend")) { 2148 if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) 2149 return -1; 2150 } 2151 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) 2152 return -1; 2153 /* 2154 * Add TopdownL1 metrics if they exist. To minimize 2155 * multiplexing, don't request threshold computation. 2156 */ 2157 if (metricgroup__has_metric(pmu, "TopdownL1")) { 2158 struct evlist *metric_evlist = evlist__new(); 2159 struct evsel *metric_evsel; 2160 2161 if (!metric_evlist) 2162 return -1; 2163 2164 if (metricgroup__parse_groups(metric_evlist, pmu, "TopdownL1", 2165 /*metric_no_group=*/false, 2166 /*metric_no_merge=*/false, 2167 /*metric_no_threshold=*/true, 2168 stat_config.user_requested_cpu_list, 2169 stat_config.system_wide, 2170 &stat_config.metric_events) < 0) 2171 return -1; 2172 2173 evlist__for_each_entry(metric_evlist, metric_evsel) { 2174 metric_evsel->skippable = true; 2175 } 2176 evlist__splice_list_tail(evsel_list, &metric_evlist->core.entries); 2177 evlist__delete(metric_evlist); 2178 } 2179 2180 /* Platform specific attrs */ 2181 if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0) 2182 return -1; 2183 } 2184 2185 /* Detailed events get appended to the event list: */ 2186 2187 if (detailed_run < 1) 2188 return 0; 2189 2190 /* Append detailed run extra attributes: */ 2191 if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) 2192 return -1; 2193 2194 if (detailed_run < 2) 2195 return 0; 2196 2197 /* Append very detailed run extra attributes: */ 2198 if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) 2199 return -1; 2200 2201 if (detailed_run < 3) 2202 return 0; 2203 2204 /* Append very, very detailed run extra attributes: */ 2205 return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); 2206 } 2207 2208 static const char * const stat_record_usage[] = { 2209 "perf stat record [<options>]", 2210 NULL, 2211 }; 2212 2213 static void init_features(struct perf_session *session) 2214 { 2215 int feat; 2216 2217 for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) 2218 perf_header__set_feat(&session->header, feat); 2219 2220 perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); 2221 perf_header__clear_feat(&session->header, HEADER_BUILD_ID); 2222 perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); 2223 perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); 2224 perf_header__clear_feat(&session->header, HEADER_AUXTRACE); 2225 } 2226 2227 static int __cmd_record(int argc, const char **argv) 2228 { 2229 struct perf_session *session; 2230 struct perf_data *data = &perf_stat.data; 2231 2232 argc = parse_options(argc, argv, stat_options, stat_record_usage, 2233 PARSE_OPT_STOP_AT_NON_OPTION); 2234 2235 if (output_name) 2236 data->path = output_name; 2237 2238 if (stat_config.run_count != 1 || forever) { 2239 pr_err("Cannot use -r option with perf stat record.\n"); 2240 return -1; 2241 } 2242 2243 session = perf_session__new(data, NULL); 2244 if (IS_ERR(session)) { 2245 pr_err("Perf session creation failed\n"); 2246 return PTR_ERR(session); 2247 } 2248 2249 init_features(session); 2250 2251 session->evlist = evsel_list; 2252 perf_stat.session = session; 2253 perf_stat.record = true; 2254 return argc; 2255 } 2256 2257 static int process_stat_round_event(struct perf_session *session, 2258 union perf_event *event) 2259 { 2260 struct perf_record_stat_round *stat_round = &event->stat_round; 2261 struct timespec tsh, *ts = NULL; 2262 const char **argv = session->header.env.cmdline_argv; 2263 int argc = session->header.env.nr_cmdline; 2264 2265 process_counters(); 2266 2267 if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) 2268 update_stats(&walltime_nsecs_stats, stat_round->time); 2269 2270 if (stat_config.interval && stat_round->time) { 2271 tsh.tv_sec = stat_round->time / NSEC_PER_SEC; 2272 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; 2273 ts = &tsh; 2274 } 2275 2276 print_counters(ts, argc, argv); 2277 return 0; 2278 } 2279 2280 static 2281 int process_stat_config_event(struct perf_session *session, 2282 union perf_event *event) 2283 { 2284 struct perf_tool *tool = session->tool; 2285 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2286 2287 perf_event__read_stat_config(&stat_config, &event->stat_config); 2288 2289 if (perf_cpu_map__empty(st->cpus)) { 2290 if (st->aggr_mode != AGGR_UNSET) 2291 pr_warning("warning: processing task data, aggregation mode not set\n"); 2292 } else if (st->aggr_mode != AGGR_UNSET) { 2293 stat_config.aggr_mode = st->aggr_mode; 2294 } 2295 2296 if (perf_stat.data.is_pipe) 2297 perf_stat_init_aggr_mode(); 2298 else 2299 perf_stat_init_aggr_mode_file(st); 2300 2301 if (stat_config.aggr_map) { 2302 int nr_aggr = stat_config.aggr_map->nr; 2303 2304 if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) { 2305 pr_err("cannot allocate aggr counts\n"); 2306 return -1; 2307 } 2308 } 2309 return 0; 2310 } 2311 2312 static int set_maps(struct perf_stat *st) 2313 { 2314 if (!st->cpus || !st->threads) 2315 return 0; 2316 2317 if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) 2318 return -EINVAL; 2319 2320 perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); 2321 2322 if (evlist__alloc_stats(&stat_config, evsel_list, /*alloc_raw=*/true)) 2323 return -ENOMEM; 2324 2325 st->maps_allocated = true; 2326 return 0; 2327 } 2328 2329 static 2330 int process_thread_map_event(struct perf_session *session, 2331 union perf_event *event) 2332 { 2333 struct perf_tool *tool = session->tool; 2334 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2335 2336 if (st->threads) { 2337 pr_warning("Extra thread map event, ignoring.\n"); 2338 return 0; 2339 } 2340 2341 st->threads = thread_map__new_event(&event->thread_map); 2342 if (!st->threads) 2343 return -ENOMEM; 2344 2345 return set_maps(st); 2346 } 2347 2348 static 2349 int process_cpu_map_event(struct perf_session *session, 2350 union perf_event *event) 2351 { 2352 struct perf_tool *tool = session->tool; 2353 struct perf_stat *st = container_of(tool, struct perf_stat, tool); 2354 struct perf_cpu_map *cpus; 2355 2356 if (st->cpus) { 2357 pr_warning("Extra cpu map event, ignoring.\n"); 2358 return 0; 2359 } 2360 2361 cpus = cpu_map__new_data(&event->cpu_map.data); 2362 if (!cpus) 2363 return -ENOMEM; 2364 2365 st->cpus = cpus; 2366 return set_maps(st); 2367 } 2368 2369 static const char * const stat_report_usage[] = { 2370 "perf stat report [<options>]", 2371 NULL, 2372 }; 2373 2374 static struct perf_stat perf_stat = { 2375 .tool = { 2376 .attr = perf_event__process_attr, 2377 .event_update = perf_event__process_event_update, 2378 .thread_map = process_thread_map_event, 2379 .cpu_map = process_cpu_map_event, 2380 .stat_config = process_stat_config_event, 2381 .stat = perf_event__process_stat_event, 2382 .stat_round = process_stat_round_event, 2383 }, 2384 .aggr_mode = AGGR_UNSET, 2385 .aggr_level = 0, 2386 }; 2387 2388 static int __cmd_report(int argc, const char **argv) 2389 { 2390 struct perf_session *session; 2391 const struct option options[] = { 2392 OPT_STRING('i', "input", &input_name, "file", "input file name"), 2393 OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, 2394 "aggregate counts per processor socket", AGGR_SOCKET), 2395 OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, 2396 "aggregate counts per processor die", AGGR_DIE), 2397 OPT_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level, 2398 "cache level", 2399 "aggregate count at this cache level (Default: LLC)", 2400 parse_cache_level), 2401 OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, 2402 "aggregate counts per physical processor core", AGGR_CORE), 2403 OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, 2404 "aggregate counts per numa node", AGGR_NODE), 2405 OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, 2406 "disable CPU count aggregation", AGGR_NONE), 2407 OPT_END() 2408 }; 2409 struct stat st; 2410 int ret; 2411 2412 argc = parse_options(argc, argv, options, stat_report_usage, 0); 2413 2414 if (!input_name || !strlen(input_name)) { 2415 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 2416 input_name = "-"; 2417 else 2418 input_name = "perf.data"; 2419 } 2420 2421 perf_stat.data.path = input_name; 2422 perf_stat.data.mode = PERF_DATA_MODE_READ; 2423 2424 session = perf_session__new(&perf_stat.data, &perf_stat.tool); 2425 if (IS_ERR(session)) 2426 return PTR_ERR(session); 2427 2428 perf_stat.session = session; 2429 stat_config.output = stderr; 2430 evsel_list = session->evlist; 2431 2432 ret = perf_session__process_events(session); 2433 if (ret) 2434 return ret; 2435 2436 perf_session__delete(session); 2437 return 0; 2438 } 2439 2440 static void setup_system_wide(int forks) 2441 { 2442 /* 2443 * Make system wide (-a) the default target if 2444 * no target was specified and one of following 2445 * conditions is met: 2446 * 2447 * - there's no workload specified 2448 * - there is workload specified but all requested 2449 * events are system wide events 2450 */ 2451 if (!target__none(&target)) 2452 return; 2453 2454 if (!forks) 2455 target.system_wide = true; 2456 else { 2457 struct evsel *counter; 2458 2459 evlist__for_each_entry(evsel_list, counter) { 2460 if (!counter->core.requires_cpu && 2461 !evsel__name_is(counter, "duration_time")) { 2462 return; 2463 } 2464 } 2465 2466 if (evsel_list->core.nr_entries) 2467 target.system_wide = true; 2468 } 2469 } 2470 2471 int cmd_stat(int argc, const char **argv) 2472 { 2473 const char * const stat_usage[] = { 2474 "perf stat [<options>] [<command>]", 2475 NULL 2476 }; 2477 int status = -EINVAL, run_idx, err; 2478 const char *mode; 2479 FILE *output = stderr; 2480 unsigned int interval, timeout; 2481 const char * const stat_subcommands[] = { "record", "report" }; 2482 char errbuf[BUFSIZ]; 2483 2484 setlocale(LC_ALL, ""); 2485 2486 evsel_list = evlist__new(); 2487 if (evsel_list == NULL) 2488 return -ENOMEM; 2489 2490 parse_events__shrink_config_terms(); 2491 2492 /* String-parsing callback-based options would segfault when negated */ 2493 set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); 2494 set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); 2495 set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); 2496 2497 argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, 2498 (const char **) stat_usage, 2499 PARSE_OPT_STOP_AT_NON_OPTION); 2500 2501 if (stat_config.csv_sep) { 2502 stat_config.csv_output = true; 2503 if (!strcmp(stat_config.csv_sep, "\\t")) 2504 stat_config.csv_sep = "\t"; 2505 } else 2506 stat_config.csv_sep = DEFAULT_SEPARATOR; 2507 2508 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { 2509 argc = __cmd_record(argc, argv); 2510 if (argc < 0) 2511 return -1; 2512 } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2513 return __cmd_report(argc, argv); 2514 2515 interval = stat_config.interval; 2516 timeout = stat_config.timeout; 2517 2518 /* 2519 * For record command the -o is already taken care of. 2520 */ 2521 if (!STAT_RECORD && output_name && strcmp(output_name, "-")) 2522 output = NULL; 2523 2524 if (output_name && output_fd) { 2525 fprintf(stderr, "cannot use both --output and --log-fd\n"); 2526 parse_options_usage(stat_usage, stat_options, "o", 1); 2527 parse_options_usage(NULL, stat_options, "log-fd", 0); 2528 goto out; 2529 } 2530 2531 if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { 2532 fprintf(stderr, "--metric-only is not supported with --per-thread\n"); 2533 goto out; 2534 } 2535 2536 if (stat_config.metric_only && stat_config.run_count > 1) { 2537 fprintf(stderr, "--metric-only is not supported with -r\n"); 2538 goto out; 2539 } 2540 2541 if (stat_config.walltime_run_table && stat_config.run_count <= 1) { 2542 fprintf(stderr, "--table is only supported with -r\n"); 2543 parse_options_usage(stat_usage, stat_options, "r", 1); 2544 parse_options_usage(NULL, stat_options, "table", 0); 2545 goto out; 2546 } 2547 2548 if (output_fd < 0) { 2549 fprintf(stderr, "argument to --log-fd must be a > 0\n"); 2550 parse_options_usage(stat_usage, stat_options, "log-fd", 0); 2551 goto out; 2552 } 2553 2554 if (!output && !quiet) { 2555 struct timespec tm; 2556 mode = append_file ? "a" : "w"; 2557 2558 output = fopen(output_name, mode); 2559 if (!output) { 2560 perror("failed to create output file"); 2561 return -1; 2562 } 2563 if (!stat_config.json_output) { 2564 clock_gettime(CLOCK_REALTIME, &tm); 2565 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); 2566 } 2567 } else if (output_fd > 0) { 2568 mode = append_file ? "a" : "w"; 2569 output = fdopen(output_fd, mode); 2570 if (!output) { 2571 perror("Failed opening logfd"); 2572 return -errno; 2573 } 2574 } 2575 2576 if (stat_config.interval_clear && !isatty(fileno(output))) { 2577 fprintf(stderr, "--interval-clear does not work with output\n"); 2578 parse_options_usage(stat_usage, stat_options, "o", 1); 2579 parse_options_usage(NULL, stat_options, "log-fd", 0); 2580 parse_options_usage(NULL, stat_options, "interval-clear", 0); 2581 return -1; 2582 } 2583 2584 stat_config.output = output; 2585 2586 /* 2587 * let the spreadsheet do the pretty-printing 2588 */ 2589 if (stat_config.csv_output) { 2590 /* User explicitly passed -B? */ 2591 if (big_num_opt == 1) { 2592 fprintf(stderr, "-B option not supported with -x\n"); 2593 parse_options_usage(stat_usage, stat_options, "B", 1); 2594 parse_options_usage(NULL, stat_options, "x", 1); 2595 goto out; 2596 } else /* Nope, so disable big number formatting */ 2597 stat_config.big_num = false; 2598 } else if (big_num_opt == 0) /* User passed --no-big-num */ 2599 stat_config.big_num = false; 2600 2601 err = target__validate(&target); 2602 if (err) { 2603 target__strerror(&target, err, errbuf, BUFSIZ); 2604 pr_warning("%s\n", errbuf); 2605 } 2606 2607 setup_system_wide(argc); 2608 2609 /* 2610 * Display user/system times only for single 2611 * run and when there's specified tracee. 2612 */ 2613 if ((stat_config.run_count == 1) && target__none(&target)) 2614 stat_config.ru_display = true; 2615 2616 if (stat_config.run_count < 0) { 2617 pr_err("Run count must be a positive number\n"); 2618 parse_options_usage(stat_usage, stat_options, "r", 1); 2619 goto out; 2620 } else if (stat_config.run_count == 0) { 2621 forever = true; 2622 stat_config.run_count = 1; 2623 } 2624 2625 if (stat_config.walltime_run_table) { 2626 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); 2627 if (!stat_config.walltime_run) { 2628 pr_err("failed to setup -r option"); 2629 goto out; 2630 } 2631 } 2632 2633 if ((stat_config.aggr_mode == AGGR_THREAD) && 2634 !target__has_task(&target)) { 2635 if (!target.system_wide || target.cpu_list) { 2636 fprintf(stderr, "The --per-thread option is only " 2637 "available when monitoring via -p -t -a " 2638 "options or only --per-thread.\n"); 2639 parse_options_usage(NULL, stat_options, "p", 1); 2640 parse_options_usage(NULL, stat_options, "t", 1); 2641 goto out; 2642 } 2643 } 2644 2645 /* 2646 * no_aggr, cgroup are for system-wide only 2647 * --per-thread is aggregated per thread, we dont mix it with cpu mode 2648 */ 2649 if (((stat_config.aggr_mode != AGGR_GLOBAL && 2650 stat_config.aggr_mode != AGGR_THREAD) || 2651 (nr_cgroups || stat_config.cgroup_list)) && 2652 !target__has_cpu(&target)) { 2653 fprintf(stderr, "both cgroup and no-aggregation " 2654 "modes only available in system-wide mode\n"); 2655 2656 parse_options_usage(stat_usage, stat_options, "G", 1); 2657 parse_options_usage(NULL, stat_options, "A", 1); 2658 parse_options_usage(NULL, stat_options, "a", 1); 2659 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2660 goto out; 2661 } 2662 2663 if (stat_config.iostat_run) { 2664 status = iostat_prepare(evsel_list, &stat_config); 2665 if (status) 2666 goto out; 2667 if (iostat_mode == IOSTAT_LIST) { 2668 iostat_list(evsel_list, &stat_config); 2669 goto out; 2670 } else if (verbose > 0) 2671 iostat_list(evsel_list, &stat_config); 2672 if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) 2673 target.system_wide = true; 2674 } 2675 2676 if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) 2677 target.per_thread = true; 2678 2679 stat_config.system_wide = target.system_wide; 2680 if (target.cpu_list) { 2681 stat_config.user_requested_cpu_list = strdup(target.cpu_list); 2682 if (!stat_config.user_requested_cpu_list) { 2683 status = -ENOMEM; 2684 goto out; 2685 } 2686 } 2687 2688 /* 2689 * Metric parsing needs to be delayed as metrics may optimize events 2690 * knowing the target is system-wide. 2691 */ 2692 if (metrics) { 2693 const char *pmu = parse_events_option_args.pmu_filter ?: "all"; 2694 2695 metricgroup__parse_groups(evsel_list, pmu, metrics, 2696 stat_config.metric_no_group, 2697 stat_config.metric_no_merge, 2698 stat_config.metric_no_threshold, 2699 stat_config.user_requested_cpu_list, 2700 stat_config.system_wide, 2701 &stat_config.metric_events); 2702 zfree(&metrics); 2703 } 2704 2705 if (add_default_attributes()) 2706 goto out; 2707 2708 if (stat_config.cgroup_list) { 2709 if (nr_cgroups > 0) { 2710 pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); 2711 parse_options_usage(stat_usage, stat_options, "G", 1); 2712 parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); 2713 goto out; 2714 } 2715 2716 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, 2717 &stat_config.metric_events, true) < 0) { 2718 parse_options_usage(stat_usage, stat_options, 2719 "for-each-cgroup", 0); 2720 goto out; 2721 } 2722 } 2723 2724 evlist__warn_user_requested_cpus(evsel_list, target.cpu_list); 2725 2726 if (evlist__create_maps(evsel_list, &target) < 0) { 2727 if (target__has_task(&target)) { 2728 pr_err("Problems finding threads of monitor\n"); 2729 parse_options_usage(stat_usage, stat_options, "p", 1); 2730 parse_options_usage(NULL, stat_options, "t", 1); 2731 } else if (target__has_cpu(&target)) { 2732 perror("failed to parse CPUs map"); 2733 parse_options_usage(stat_usage, stat_options, "C", 1); 2734 parse_options_usage(NULL, stat_options, "a", 1); 2735 } 2736 goto out; 2737 } 2738 2739 evlist__check_cpu_maps(evsel_list); 2740 2741 /* 2742 * Initialize thread_map with comm names, 2743 * so we could print it out on output. 2744 */ 2745 if (stat_config.aggr_mode == AGGR_THREAD) { 2746 thread_map__read_comms(evsel_list->core.threads); 2747 } 2748 2749 if (stat_config.aggr_mode == AGGR_NODE) 2750 cpu__setup_cpunode_map(); 2751 2752 if (stat_config.times && interval) 2753 interval_count = true; 2754 else if (stat_config.times && !interval) { 2755 pr_err("interval-count option should be used together with " 2756 "interval-print.\n"); 2757 parse_options_usage(stat_usage, stat_options, "interval-count", 0); 2758 parse_options_usage(stat_usage, stat_options, "I", 1); 2759 goto out; 2760 } 2761 2762 if (timeout && timeout < 100) { 2763 if (timeout < 10) { 2764 pr_err("timeout must be >= 10ms.\n"); 2765 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2766 goto out; 2767 } else 2768 pr_warning("timeout < 100ms. " 2769 "The overhead percentage could be high in some cases. " 2770 "Please proceed with caution.\n"); 2771 } 2772 if (timeout && interval) { 2773 pr_err("timeout option is not supported with interval-print.\n"); 2774 parse_options_usage(stat_usage, stat_options, "timeout", 0); 2775 parse_options_usage(stat_usage, stat_options, "I", 1); 2776 goto out; 2777 } 2778 2779 if (perf_stat_init_aggr_mode()) 2780 goto out; 2781 2782 if (evlist__alloc_stats(&stat_config, evsel_list, interval)) 2783 goto out; 2784 2785 /* 2786 * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless 2787 * while avoiding that older tools show confusing messages. 2788 * 2789 * However for pipe sessions we need to keep it zero, 2790 * because script's perf_evsel__check_attr is triggered 2791 * by attr->sample_type != 0, and we can't run it on 2792 * stat sessions. 2793 */ 2794 stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); 2795 2796 /* 2797 * We dont want to block the signals - that would cause 2798 * child tasks to inherit that and Ctrl-C would not work. 2799 * What we want is for Ctrl-C to work in the exec()-ed 2800 * task, but being ignored by perf stat itself: 2801 */ 2802 atexit(sig_atexit); 2803 if (!forever) 2804 signal(SIGINT, skip_signal); 2805 signal(SIGCHLD, skip_signal); 2806 signal(SIGALRM, skip_signal); 2807 signal(SIGABRT, skip_signal); 2808 2809 if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) 2810 goto out; 2811 2812 /* Enable ignoring missing threads when -p option is defined. */ 2813 evlist__first(evsel_list)->ignore_missing_thread = target.pid; 2814 status = 0; 2815 for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { 2816 if (stat_config.run_count != 1 && verbose > 0) 2817 fprintf(output, "[ perf stat: executing run #%d ... ]\n", 2818 run_idx + 1); 2819 2820 if (run_idx != 0) 2821 evlist__reset_prev_raw_counts(evsel_list); 2822 2823 status = run_perf_stat(argc, argv, run_idx); 2824 if (forever && status != -1 && !interval) { 2825 print_counters(NULL, argc, argv); 2826 perf_stat__reset_stats(); 2827 } 2828 } 2829 2830 if (!forever && status != -1 && (!interval || stat_config.summary)) 2831 print_counters(NULL, argc, argv); 2832 2833 evlist__finalize_ctlfd(evsel_list); 2834 2835 if (STAT_RECORD) { 2836 /* 2837 * We synthesize the kernel mmap record just so that older tools 2838 * don't emit warnings about not being able to resolve symbols 2839 * due to /proc/sys/kernel/kptr_restrict settings and instead provide 2840 * a saner message about no samples being in the perf.data file. 2841 * 2842 * This also serves to suppress a warning about f_header.data.size == 0 2843 * in header.c at the moment 'perf stat record' gets introduced, which 2844 * is not really needed once we start adding the stat specific PERF_RECORD_ 2845 * records, but the need to suppress the kptr_restrict messages in older 2846 * tools remain -acme 2847 */ 2848 int fd = perf_data__fd(&perf_stat.data); 2849 2850 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, 2851 process_synthesized_event, 2852 &perf_stat.session->machines.host); 2853 if (err) { 2854 pr_warning("Couldn't synthesize the kernel mmap record, harmless, " 2855 "older tools may produce warnings about this file\n."); 2856 } 2857 2858 if (!interval) { 2859 if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) 2860 pr_err("failed to write stat round event\n"); 2861 } 2862 2863 if (!perf_stat.data.is_pipe) { 2864 perf_stat.session->header.data_size += perf_stat.bytes_written; 2865 perf_session__write_header(perf_stat.session, evsel_list, fd, true); 2866 } 2867 2868 evlist__close(evsel_list); 2869 perf_session__delete(perf_stat.session); 2870 } 2871 2872 perf_stat__exit_aggr_mode(); 2873 evlist__free_stats(evsel_list); 2874 out: 2875 if (stat_config.iostat_run) 2876 iostat_release(evsel_list); 2877 2878 zfree(&stat_config.walltime_run); 2879 zfree(&stat_config.user_requested_cpu_list); 2880 2881 if (smi_cost && smi_reset) 2882 sysfs__write_int(FREEZE_ON_SMI_PATH, 0); 2883 2884 evlist__delete(evsel_list); 2885 2886 metricgroup__rblist_exit(&stat_config.metric_events); 2887 evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); 2888 2889 return status; 2890 } 2891