tools/perf/builtin-stat.c

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