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                 if (!all_counters_use_bpf)
 576                         evlist__enable(evsel_list);
 577                 if (stat_config.initial_delay > 0)
 578                         pr_info(EVLIST_ENABLED_MSG);
 579         }
 580         return 0;
 581 }
 582
 583 static void disable_counters(void)
 584 {
 585         struct evsel *counter;
 586
 587         /*
 588          * If we don't have tracee (attaching to task or cpu), counters may
 589          * still be running. To get accurate group ratios, we must stop groups
 590          * from counting before reading their constituent counters.
 591          */
 592         if (!target__none(&target)) {
 593                 evlist__for_each_entry(evsel_list, counter)
 594                         bpf_counter__disable(counter);
 595                 if (!all_counters_use_bpf)
 596                         evlist__disable(evsel_list);
 597         }
 598 }
 599
 600 static volatile int workload_exec_errno;
 601
 602 /*
 603  * evlist__prepare_workload will send a SIGUSR1
 604  * if the fork fails, since we asked by setting its
 605  * want_signal to true.
 606  */
 607 static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
 608                                         void *ucontext __maybe_unused)
 609 {
 610         workload_exec_errno = info->si_value.sival_int;
 611 }
 612
 613 static bool evsel__should_store_id(struct evsel *counter)
 614 {
 615         return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID;
 616 }
 617
 618 static bool is_target_alive(struct target *_target,
 619                             struct perf_thread_map *threads)
 620 {
 621         struct stat st;
 622         int i;
 623
 624         if (!target__has_task(_target))
 625                 return true;
 626
 627         for (i = 0; i < threads->nr; i++) {
 628                 char path[PATH_MAX];
 629
 630                 scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(),
 631                           threads->map[i].pid);
 632
 633                 if (!stat(path, &st))
 634                         return true;
 635         }
 636
 637         return false;
 638 }
 639
 640 static void process_evlist(struct evlist *evlist, unsigned int interval)
 641 {
 642         enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
 643
 644         if (evlist__ctlfd_process(evlist, &cmd) > 0) {
 645                 switch (cmd) {
 646                 case EVLIST_CTL_CMD_ENABLE:
 647                         if (interval)
 648                                 process_interval();
 649                         break;
 650                 case EVLIST_CTL_CMD_DISABLE:
 651                         if (interval)
 652                                 process_interval();
 653                         break;
 654                 case EVLIST_CTL_CMD_SNAPSHOT:
 655                 case EVLIST_CTL_CMD_ACK:
 656                 case EVLIST_CTL_CMD_UNSUPPORTED:
 657                 case EVLIST_CTL_CMD_EVLIST:
 658                 case EVLIST_CTL_CMD_STOP:
 659                 case EVLIST_CTL_CMD_PING:
 660                 default:
 661                         break;
 662                 }
 663         }
 664 }
 665
 666 static void compute_tts(struct timespec *time_start, struct timespec *time_stop,
 667                         int *time_to_sleep)
 668 {
 669         int tts = *time_to_sleep;
 670         struct timespec time_diff;
 671
 672         diff_timespec(&time_diff, time_stop, time_start);
 673
 674         tts -= time_diff.tv_sec * MSEC_PER_SEC +
 675                time_diff.tv_nsec / NSEC_PER_MSEC;
 676
 677         if (tts < 0)
 678                 tts = 0;
 679
 680         *time_to_sleep = tts;
 681 }
 682
 683 static int dispatch_events(bool forks, int timeout, int interval, int *times)
 684 {
 685         int child_exited = 0, status = 0;
 686         int time_to_sleep, sleep_time;
 687         struct timespec time_start, time_stop;
 688
 689         if (interval)
 690                 sleep_time = interval;
 691         else if (timeout)
 692                 sleep_time = timeout;
 693         else
 694                 sleep_time = 1000;
 695
 696         time_to_sleep = sleep_time;
 697
 698         while (!done) {
 699                 if (forks)
 700                         child_exited = waitpid(child_pid, &status, WNOHANG);
 701                 else
 702                         child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0;
 703
 704                 if (child_exited)
 705                         break;
 706
 707                 clock_gettime(CLOCK_MONOTONIC, &time_start);
 708                 if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */
 709                         if (timeout || handle_interval(interval, times))
 710                                 break;
 711                         time_to_sleep = sleep_time;
 712                 } else { /* fd revent */
 713                         process_evlist(evsel_list, interval);
 714                         clock_gettime(CLOCK_MONOTONIC, &time_stop);
 715                         compute_tts(&time_start, &time_stop, &time_to_sleep);
 716                 }
 717         }
 718
 719         return status;
 720 }
 721
 722 enum counter_recovery {
 723         COUNTER_SKIP,
 724         COUNTER_RETRY,
 725         COUNTER_FATAL,
 726 };
 727
 728 static enum counter_recovery stat_handle_error(struct evsel *counter)
 729 {
 730         char msg[BUFSIZ];
 731         /*
 732          * PPC returns ENXIO for HW counters until 2.6.37
 733          * (behavior changed with commit b0a873e).
 734          */
 735         if (errno == EINVAL || errno == ENOSYS ||
 736             errno == ENOENT || errno == EOPNOTSUPP ||
 737             errno == ENXIO) {
 738                 if (verbose > 0)
 739                         ui__warning("%s event is not supported by the kernel.\n",
 740                                     evsel__name(counter));
 741                 counter->supported = false;
 742                 /*
 743                  * errored is a sticky flag that means one of the counter's
 744                  * cpu event had a problem and needs to be reexamined.
 745                  */
 746                 counter->errored = true;
 747
 748                 if ((counter->leader != counter) ||
 749                     !(counter->leader->core.nr_members > 1))
 750                         return COUNTER_SKIP;
 751         } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) {
 752                 if (verbose > 0)
 753                         ui__warning("%s\n", msg);
 754                 return COUNTER_RETRY;
 755         } else if (target__has_per_thread(&target) &&
 756                    evsel_list->core.threads &&
 757                    evsel_list->core.threads->err_thread != -1) {
 758                 /*
 759                  * For global --per-thread case, skip current
 760                  * error thread.
 761                  */
 762                 if (!thread_map__remove(evsel_list->core.threads,
 763                                         evsel_list->core.threads->err_thread)) {
 764                         evsel_list->core.threads->err_thread = -1;
 765                         return COUNTER_RETRY;
 766                 }
 767         }
 768
 769         evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
 770         ui__error("%s\n", msg);
 771
 772         if (child_pid != -1)
 773                 kill(child_pid, SIGTERM);
 774         return COUNTER_FATAL;
 775 }
 776
 777 static int __run_perf_stat(int argc, const char **argv, int run_idx)
 778 {
 779         int interval = stat_config.interval;
 780         int times = stat_config.times;
 781         int timeout = stat_config.timeout;
 782         char msg[BUFSIZ];
 783         unsigned long long t0, t1;
 784         struct evsel *counter;
 785         size_t l;
 786         int status = 0;
 787         const bool forks = (argc > 0);
 788         bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
 789         struct affinity affinity;
 790         int i, cpu, err;
 791         bool second_pass = false;
 792
 793         if (forks) {
 794                 if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) {
 795                         perror("failed to prepare workload");
 796                         return -1;
 797                 }
 798                 child_pid = evsel_list->workload.pid;
 799         }
 800
 801         if (group)
 802                 evlist__set_leader(evsel_list);
 803
 804         if (affinity__setup(&affinity) < 0)
 805                 return -1;
 806
 807         evlist__for_each_entry(evsel_list, counter) {
 808                 if (bpf_counter__load(counter, &target))
 809                         return -1;
 810                 if (!evsel__is_bpf(counter))
 811                         all_counters_use_bpf = false;
 812         }
 813
 814         evlist__for_each_cpu (evsel_list, i, cpu) {
 815                 /*
 816                  * bperf calls evsel__open_per_cpu() in bperf__load(), so
 817                  * no need to call it again here.
 818                  */
 819                 if (target.use_bpf)
 820                         break;
 821                 affinity__set(&affinity, cpu);
 822
 823                 evlist__for_each_entry(evsel_list, counter) {
 824                         if (evsel__cpu_iter_skip(counter, cpu))
 825                                 continue;
 826                         if (counter->reset_group || counter->errored)
 827                                 continue;
 828                         if (evsel__is_bpf(counter))
 829                                 continue;
 830 try_again:
 831                         if (create_perf_stat_counter(counter, &stat_config, &target,
 832                                                      counter->cpu_iter - 1) < 0) {
 833
 834                                 /*
 835                                  * Weak group failed. We cannot just undo this here
 836                                  * because earlier CPUs might be in group mode, and the kernel
 837                                  * doesn't support mixing group and non group reads. Defer
 838                                  * it to later.
 839                                  * Don't close here because we're in the wrong affinity.
 840                                  */
 841                                 if ((errno == EINVAL || errno == EBADF) &&
 842                                     counter->leader != counter &&
 843                                     counter->weak_group) {
 844                                         evlist__reset_weak_group(evsel_list, counter, false);
 845                                         assert(counter->reset_group);
 846                                         second_pass = true;
 847                                         continue;
 848                                 }
 849
 850                                 switch (stat_handle_error(counter)) {
 851                                 case COUNTER_FATAL:
 852                                         return -1;
 853                                 case COUNTER_RETRY:
 854                                         goto try_again;
 855                                 case COUNTER_SKIP:
 856                                         continue;
 857                                 default:
 858                                         break;
 859                                 }
 860
 861                         }
 862                         counter->supported = true;
 863                 }
 864         }
 865
 866         if (second_pass) {
 867                 /*
 868                  * Now redo all the weak group after closing them,
 869                  * and also close errored counters.
 870                  */
 871
 872                 evlist__for_each_cpu(evsel_list, i, cpu) {
 873                         affinity__set(&affinity, cpu);
 874                         /* First close errored or weak retry */
 875                         evlist__for_each_entry(evsel_list, counter) {
 876                                 if (!counter->reset_group && !counter->errored)
 877                                         continue;
 878                                 if (evsel__cpu_iter_skip_no_inc(counter, cpu))
 879                                         continue;
 880                                 perf_evsel__close_cpu(&counter->core, counter->cpu_iter);
 881                         }
 882                         /* Now reopen weak */
 883                         evlist__for_each_entry(evsel_list, counter) {
 884                                 if (!counter->reset_group && !counter->errored)
 885                                         continue;
 886                                 if (evsel__cpu_iter_skip(counter, cpu))
 887                                         continue;
 888                                 if (!counter->reset_group)
 889                                         continue;
 890 try_again_reset:
 891                                 pr_debug2("reopening weak %s\n", evsel__name(counter));
 892                                 if (create_perf_stat_counter(counter, &stat_config, &target,
 893                                                              counter->cpu_iter - 1) < 0) {
 894
 895                                         switch (stat_handle_error(counter)) {
 896                                         case COUNTER_FATAL:
 897                                                 return -1;
 898                                         case COUNTER_RETRY:
 899                                                 goto try_again_reset;
 900                                         case COUNTER_SKIP:
 901                                                 continue;
 902                                         default:
 903                                                 break;
 904                                         }
 905                                 }
 906                                 counter->supported = true;
 907                         }
 908                 }
 909         }
 910         affinity__cleanup(&affinity);
 911
 912         evlist__for_each_entry(evsel_list, counter) {
 913                 if (!counter->supported) {
 914                         perf_evsel__free_fd(&counter->core);
 915                         continue;
 916                 }
 917
 918                 l = strlen(counter->unit);
 919                 if (l > stat_config.unit_width)
 920                         stat_config.unit_width = l;
 921
 922                 if (evsel__should_store_id(counter) &&
 923                     evsel__store_ids(counter, evsel_list))
 924                         return -1;
 925         }
 926
 927         if (evlist__apply_filters(evsel_list, &counter)) {
 928                 pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
 929                         counter->filter, evsel__name(counter), errno,
 930                         str_error_r(errno, msg, sizeof(msg)));
 931                 return -1;
 932         }
 933
 934         if (STAT_RECORD) {
 935                 int fd = perf_data__fd(&perf_stat.data);
 936
 937                 if (is_pipe) {
 938                         err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
 939                 } else {
 940                         err = perf_session__write_header(perf_stat.session, evsel_list,
 941                                                          fd, false);
 942                 }
 943
 944                 if (err < 0)
 945                         return err;
 946
 947                 err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list,
 948                                                          process_synthesized_event, is_pipe);
 949                 if (err < 0)
 950                         return err;
 951         }
 952
 953         /*
 954          * Enable counters and exec the command:
 955          */
 956         if (forks) {
 957                 evlist__start_workload(evsel_list);
 958                 err = enable_counters();
 959                 if (err)
 960                         return -1;
 961
 962                 t0 = rdclock();
 963                 clock_gettime(CLOCK_MONOTONIC, &ref_time);
 964
 965                 if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
 966                         status = dispatch_events(forks, timeout, interval, &times);
 967                 if (child_pid != -1) {
 968                         if (timeout)
 969                                 kill(child_pid, SIGTERM);
 970                         wait4(child_pid, &status, 0, &stat_config.ru_data);
 971                 }
 972
 973                 if (workload_exec_errno) {
 974                         const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
 975                         pr_err("Workload failed: %s\n", emsg);
 976                         return -1;
 977                 }
 978
 979                 if (WIFSIGNALED(status))
 980                         psignal(WTERMSIG(status), argv[0]);
 981         } else {
 982                 err = enable_counters();
 983                 if (err)
 984                         return -1;
 985
 986                 t0 = rdclock();
 987                 clock_gettime(CLOCK_MONOTONIC, &ref_time);
 988
 989                 status = dispatch_events(forks, timeout, interval, &times);
 990         }
 991
 992         disable_counters();
 993
 994         t1 = rdclock();
 995
 996         if (stat_config.walltime_run_table)
 997                 stat_config.walltime_run[run_idx] = t1 - t0;
 998
 999         if (interval && stat_config.summary) {
1000                 stat_config.interval = 0;
1001                 stat_config.stop_read_counter = true;
1002                 init_stats(&walltime_nsecs_stats);
1003                 update_stats(&walltime_nsecs_stats, t1 - t0);
1004
1005                 if (stat_config.aggr_mode == AGGR_GLOBAL)
1006                         evlist__save_aggr_prev_raw_counts(evsel_list);
1007
1008                 evlist__copy_prev_raw_counts(evsel_list);
1009                 evlist__reset_prev_raw_counts(evsel_list);
1010                 runtime_stat_reset(&stat_config);
1011                 perf_stat__reset_shadow_per_stat(&rt_stat);
1012         } else
1013                 update_stats(&walltime_nsecs_stats, t1 - t0);
1014
1015         /*
1016          * Closing a group leader splits the group, and as we only disable
1017          * group leaders, results in remaining events becoming enabled. To
1018          * avoid arbitrary skew, we must read all counters before closing any
1019          * group leaders.
1020          */
1021         read_counters(&(struct timespec) { .tv_nsec = t1-t0 });
1022
1023         /*
1024          * We need to keep evsel_list alive, because it's processed
1025          * later the evsel_list will be closed after.
1026          */
1027         if (!STAT_RECORD)
1028                 evlist__close(evsel_list);
1029
1030         return WEXITSTATUS(status);
1031 }
1032
1033 static int run_perf_stat(int argc, const char **argv, int run_idx)
1034 {
1035         int ret;
1036
1037         if (pre_cmd) {
1038                 ret = system(pre_cmd);
1039                 if (ret)
1040                         return ret;
1041         }
1042
1043         if (sync_run)
1044                 sync();
1045
1046         ret = __run_perf_stat(argc, argv, run_idx);
1047         if (ret)
1048                 return ret;
1049
1050         if (post_cmd) {
1051                 ret = system(post_cmd);
1052                 if (ret)
1053                         return ret;
1054         }
1055
1056         return ret;
1057 }
1058
1059 static void print_counters(struct timespec *ts, int argc, const char **argv)
1060 {
1061         /* Do not print anything if we record to the pipe. */
1062         if (STAT_RECORD && perf_stat.data.is_pipe)
1063                 return;
1064         if (stat_config.quiet)
1065                 return;
1066
1067         evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
1068 }
1069
1070 static volatile int signr = -1;
1071
1072 static void skip_signal(int signo)
1073 {
1074         if ((child_pid == -1) || stat_config.interval)
1075                 done = 1;
1076
1077         signr = signo;
1078         /*
1079          * render child_pid harmless
1080          * won't send SIGTERM to a random
1081          * process in case of race condition
1082          * and fast PID recycling
1083          */
1084         child_pid = -1;
1085 }
1086
1087 static void sig_atexit(void)
1088 {
1089         sigset_t set, oset;
1090
1091         /*
1092          * avoid race condition with SIGCHLD handler
1093          * in skip_signal() which is modifying child_pid
1094          * goal is to avoid send SIGTERM to a random
1095          * process
1096          */
1097         sigemptyset(&set);
1098         sigaddset(&set, SIGCHLD);
1099         sigprocmask(SIG_BLOCK, &set, &oset);
1100
1101         if (child_pid != -1)
1102                 kill(child_pid, SIGTERM);
1103
1104         sigprocmask(SIG_SETMASK, &oset, NULL);
1105
1106         if (signr == -1)
1107                 return;
1108
1109         signal(signr, SIG_DFL);
1110         kill(getpid(), signr);
1111 }
1112
1113 void perf_stat__set_big_num(int set)
1114 {
1115         stat_config.big_num = (set != 0);
1116 }
1117
1118 void perf_stat__set_no_csv_summary(int set)
1119 {
1120         stat_config.no_csv_summary = (set != 0);
1121 }
1122
1123 static int stat__set_big_num(const struct option *opt __maybe_unused,
1124                              const char *s __maybe_unused, int unset)
1125 {
1126         big_num_opt = unset ? 0 : 1;
1127         perf_stat__set_big_num(!unset);
1128         return 0;
1129 }
1130
1131 static int enable_metric_only(const struct option *opt __maybe_unused,
1132                               const char *s __maybe_unused, int unset)
1133 {
1134         force_metric_only = true;
1135         stat_config.metric_only = !unset;
1136         return 0;
1137 }
1138
1139 static int parse_metric_groups(const struct option *opt,
1140                                const char *str,
1141                                int unset __maybe_unused)
1142 {
1143         return metricgroup__parse_groups(opt, str,
1144                                          stat_config.metric_no_group,
1145                                          stat_config.metric_no_merge,
1146                                          &stat_config.metric_events);
1147 }
1148
1149 static int parse_control_option(const struct option *opt,
1150                                 const char *str,
1151                                 int unset __maybe_unused)
1152 {
1153         struct perf_stat_config *config = opt->value;
1154
1155         return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close);
1156 }
1157
1158 static int parse_stat_cgroups(const struct option *opt,
1159                               const char *str, int unset)
1160 {
1161         if (stat_config.cgroup_list) {
1162                 pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
1163                 return -1;
1164         }
1165
1166         return parse_cgroups(opt, str, unset);
1167 }
1168
1169 static struct option stat_options[] = {
1170         OPT_BOOLEAN('T', "transaction", &transaction_run,
1171                     "hardware transaction statistics"),
1172         OPT_CALLBACK('e', "event", &evsel_list, "event",
1173                      "event selector. use 'perf list' to list available events",
1174                      parse_events_option),
1175         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1176                      "event filter", parse_filter),
1177         OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit,
1178                     "child tasks do not inherit counters"),
1179         OPT_STRING('p', "pid", &target.pid, "pid",
1180                    "stat events on existing process id"),
1181         OPT_STRING('t', "tid", &target.tid, "tid",
1182                    "stat events on existing thread id"),
1183 #ifdef HAVE_BPF_SKEL
1184         OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id",
1185                    "stat events on existing bpf program id"),
1186         OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf,
1187                     "use bpf program to count events"),
1188         OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path",
1189                    "path to perf_event_attr map"),
1190 #endif
1191         OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1192                     "system-wide collection from all CPUs"),
1193         OPT_BOOLEAN('g', "group", &group,
1194                     "put the counters into a counter group"),
1195         OPT_BOOLEAN(0, "scale", &stat_config.scale,
1196                     "Use --no-scale to disable counter scaling for multiplexing"),
1197         OPT_INCR('v', "verbose", &verbose,
1198                     "be more verbose (show counter open errors, etc)"),
1199         OPT_INTEGER('r', "repeat", &stat_config.run_count,
1200                     "repeat command and print average + stddev (max: 100, forever: 0)"),
1201         OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table,
1202                     "display details about each run (only with -r option)"),
1203         OPT_BOOLEAN('n', "null", &stat_config.null_run,
1204                     "null run - dont start any counters"),
1205         OPT_INCR('d', "detailed", &detailed_run,
1206                     "detailed run - start a lot of events"),
1207         OPT_BOOLEAN('S', "sync", &sync_run,
1208                     "call sync() before starting a run"),
1209         OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1210                            "print large numbers with thousands\' separators",
1211                            stat__set_big_num),
1212         OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1213                     "list of cpus to monitor in system-wide"),
1214         OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
1215                     "disable CPU count aggregation", AGGR_NONE),
1216         OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"),
1217         OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
1218                    "print counts with custom separator"),
1219         OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1220                      "monitor event in cgroup name only", parse_stat_cgroups),
1221         OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name",
1222                     "expand events for each cgroup"),
1223         OPT_STRING('o', "output", &output_name, "file", "output file name"),
1224         OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1225         OPT_INTEGER(0, "log-fd", &output_fd,
1226                     "log output to fd, instead of stderr"),
1227         OPT_STRING(0, "pre", &pre_cmd, "command",
1228                         "command to run prior to the measured command"),
1229         OPT_STRING(0, "post", &post_cmd, "command",
1230                         "command to run after to the measured command"),
1231         OPT_UINTEGER('I', "interval-print", &stat_config.interval,
1232                     "print counts at regular interval in ms "
1233                     "(overhead is possible for values <= 100ms)"),
1234         OPT_INTEGER(0, "interval-count", &stat_config.times,
1235                     "print counts for fixed number of times"),
1236         OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear,
1237                     "clear screen in between new interval"),
1238         OPT_UINTEGER(0, "timeout", &stat_config.timeout,
1239                     "stop workload and print counts after a timeout period in ms (>= 10ms)"),
1240         OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
1241                      "aggregate counts per processor socket", AGGR_SOCKET),
1242         OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode,
1243                      "aggregate counts per processor die", AGGR_DIE),
1244         OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
1245                      "aggregate counts per physical processor core", AGGR_CORE),
1246         OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
1247                      "aggregate counts per thread", AGGR_THREAD),
1248         OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode,
1249                      "aggregate counts per numa node", AGGR_NODE),
1250         OPT_INTEGER('D', "delay", &stat_config.initial_delay,
1251                     "ms to wait before starting measurement after program start (-1: start with events disabled)"),
1252         OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL,
1253                         "Only print computed metrics. No raw values", enable_metric_only),
1254         OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group,
1255                        "don't group metric events, impacts multiplexing"),
1256         OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
1257                        "don't try to share events between metrics in a group"),
1258         OPT_BOOLEAN(0, "topdown", &topdown_run,
1259                         "measure top-down statistics"),
1260         OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
1261                         "Set the metrics level for the top-down statistics (0: max level)"),
1262         OPT_BOOLEAN(0, "smi-cost", &smi_cost,
1263                         "measure SMI cost"),
1264         OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
1265                      "monitor specified metrics or metric groups (separated by ,)",
1266                      parse_metric_groups),
1267         OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,
1268                          "Configure all used events to run in kernel space.",
1269                          PARSE_OPT_EXCLUSIVE),
1270         OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,
1271                          "Configure all used events to run in user space.",
1272                          PARSE_OPT_EXCLUSIVE),
1273         OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread,
1274                     "Use with 'percore' event qualifier to show the event "
1275                     "counts of one hardware thread by sum up total hardware "
1276                     "threads of same physical core"),
1277         OPT_BOOLEAN(0, "summary", &stat_config.summary,
1278                        "print summary for interval mode"),
1279         OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
1280                        "don't print 'summary' for CSV summary output"),
1281         OPT_BOOLEAN(0, "quiet", &stat_config.quiet,
1282                         "don't print output (useful with record)"),
1283 #ifdef HAVE_LIBPFM
1284         OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
1285                 "libpfm4 event selector. use 'perf list' to list available events",
1286                 parse_libpfm_events_option),
1287 #endif
1288         OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]",
1289                      "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n"
1290                      "\t\t\t  Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n"
1291                      "\t\t\t  Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.",
1292                       parse_control_option),
1293         OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default",
1294                             "measure I/O performance metrics provided by arch/platform",
1295                             iostat_parse),
1296         OPT_END()
1297 };
1298
1299 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
1300                                  struct perf_cpu_map *map, int cpu)
1301 {
1302         return cpu_map__get_socket(map, cpu, NULL);
1303 }
1304
1305 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
1306                               struct perf_cpu_map *map, int cpu)
1307 {
1308         return cpu_map__get_die(map, cpu, NULL);
1309 }
1310
1311 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
1312                                struct perf_cpu_map *map, int cpu)
1313 {
1314         return cpu_map__get_core(map, cpu, NULL);
1315 }
1316
1317 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
1318                                struct perf_cpu_map *map, int cpu)
1319 {
1320         return cpu_map__get_node(map, cpu, NULL);
1321 }
1322
1323 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
1324                                aggr_get_id_t get_id, struct perf_cpu_map *map, int idx)
1325 {
1326         int cpu;
1327         struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1328
1329         if (idx >= map->nr)
1330                 return id;
1331
1332         cpu = map->map[idx];
1333
1334         if (cpu_map__aggr_cpu_id_is_empty(config->cpus_aggr_map->map[cpu]))
1335                 config->cpus_aggr_map->map[cpu] = get_id(config, map, idx);
1336
1337         id = config->cpus_aggr_map->map[cpu];
1338         return id;
1339 }
1340
1341 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
1342                                         struct perf_cpu_map *map, int idx)
1343 {
1344         return perf_stat__get_aggr(config, perf_stat__get_socket, map, idx);
1345 }
1346
1347 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
1348                                         struct perf_cpu_map *map, int idx)
1349 {
1350         return perf_stat__get_aggr(config, perf_stat__get_die, map, idx);
1351 }
1352
1353 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
1354                                       struct perf_cpu_map *map, int idx)
1355 {
1356         return perf_stat__get_aggr(config, perf_stat__get_core, map, idx);
1357 }
1358
1359 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
1360                                       struct perf_cpu_map *map, int idx)
1361 {
1362         return perf_stat__get_aggr(config, perf_stat__get_node, map, idx);
1363 }
1364
1365 static bool term_percore_set(void)
1366 {
1367         struct evsel *counter;
1368
1369         evlist__for_each_entry(evsel_list, counter) {
1370                 if (counter->percore)
1371                         return true;
1372         }
1373
1374         return false;
1375 }
1376
1377 static int perf_stat_init_aggr_mode(void)
1378 {
1379         int nr;
1380
1381         switch (stat_config.aggr_mode) {
1382         case AGGR_SOCKET:
1383                 if (cpu_map__build_socket_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1384                         perror("cannot build socket map");
1385                         return -1;
1386                 }
1387                 stat_config.aggr_get_id = perf_stat__get_socket_cached;
1388                 break;
1389         case AGGR_DIE:
1390                 if (cpu_map__build_die_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1391                         perror("cannot build die map");
1392                         return -1;
1393                 }
1394                 stat_config.aggr_get_id = perf_stat__get_die_cached;
1395                 break;
1396         case AGGR_CORE:
1397                 if (cpu_map__build_core_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_core_cached;
1402                 break;
1403         case AGGR_NODE:
1404                 if (cpu_map__build_node_map(evsel_list->core.cpus, &stat_config.aggr_map)) {
1405                         perror("cannot build core map");
1406                         return -1;
1407                 }
1408                 stat_config.aggr_get_id = perf_stat__get_node_cached;
1409                 break;
1410         case AGGR_NONE:
1411                 if (term_percore_set()) {
1412                         if (cpu_map__build_core_map(evsel_list->core.cpus,
1413                                                     &stat_config.aggr_map)) {
1414                                 perror("cannot build core map");
1415                                 return -1;
1416                         }
1417                         stat_config.aggr_get_id = perf_stat__get_core_cached;
1418                 }
1419                 break;
1420         case AGGR_GLOBAL:
1421         case AGGR_THREAD:
1422         case AGGR_UNSET:
1423         default:
1424                 break;
1425         }
1426
1427         /*
1428          * The evsel_list->cpus is the base we operate on,
1429          * taking the highest cpu number to be the size of
1430          * the aggregation translate cpumap.
1431          */
1432         nr = perf_cpu_map__max(evsel_list->core.cpus);
1433         stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
1434         return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
1435 }
1436
1437 static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
1438 {
1439         if (map) {
1440                 WARN_ONCE(refcount_read(&map->refcnt) != 0,
1441                           "cpu_aggr_map refcnt unbalanced\n");
1442                 free(map);
1443         }
1444 }
1445
1446 static void cpu_aggr_map__put(struct cpu_aggr_map *map)
1447 {
1448         if (map && refcount_dec_and_test(&map->refcnt))
1449                 cpu_aggr_map__delete(map);
1450 }
1451
1452 static void perf_stat__exit_aggr_mode(void)
1453 {
1454         cpu_aggr_map__put(stat_config.aggr_map);
1455         cpu_aggr_map__put(stat_config.cpus_aggr_map);
1456         stat_config.aggr_map = NULL;
1457         stat_config.cpus_aggr_map = NULL;
1458 }
1459
1460 static inline int perf_env__get_cpu(struct perf_env *env, struct perf_cpu_map *map, int idx)
1461 {
1462         int cpu;
1463
1464         if (idx > map->nr)
1465                 return -1;
1466
1467         cpu = map->map[idx];
1468
1469         if (cpu >= env->nr_cpus_avail)
1470                 return -1;
1471
1472         return cpu;
1473 }
1474
1475 static struct aggr_cpu_id perf_env__get_socket(struct perf_cpu_map *map, int idx, void *data)
1476 {
1477         struct perf_env *env = data;
1478         int cpu = perf_env__get_cpu(env, map, idx);
1479         struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1480
1481         if (cpu != -1)
1482                 id.socket = env->cpu[cpu].socket_id;
1483
1484         return id;
1485 }
1486
1487 static struct aggr_cpu_id perf_env__get_die(struct perf_cpu_map *map, int idx, void *data)
1488 {
1489         struct perf_env *env = data;
1490         struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1491         int cpu = perf_env__get_cpu(env, map, idx);
1492
1493         if (cpu != -1) {
1494                 /*
1495                  * die_id is relative to socket, so start
1496                  * with the socket ID and then add die to
1497                  * make a unique ID.
1498                  */
1499                 id.socket = env->cpu[cpu].socket_id;
1500                 id.die = env->cpu[cpu].die_id;
1501         }
1502
1503         return id;
1504 }
1505
1506 static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx, void *data)
1507 {
1508         struct perf_env *env = data;
1509         struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1510         int cpu = perf_env__get_cpu(env, map, idx);
1511
1512         if (cpu != -1) {
1513                 /*
1514                  * core_id is relative to socket and die,
1515                  * we need a global id. So we set
1516                  * socket, die id and core id
1517                  */
1518                 id.socket = env->cpu[cpu].socket_id;
1519                 id.die = env->cpu[cpu].die_id;
1520                 id.core = env->cpu[cpu].core_id;
1521         }
1522
1523         return id;
1524 }
1525
1526 static struct aggr_cpu_id perf_env__get_node(struct perf_cpu_map *map, int idx, void *data)
1527 {
1528         int cpu = perf_env__get_cpu(data, map, idx);
1529         struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
1530
1531         id.node = perf_env__numa_node(data, cpu);
1532         return id;
1533 }
1534
1535 static int perf_env__build_socket_map(struct perf_env *env, struct perf_cpu_map *cpus,
1536                                       struct cpu_aggr_map **sockp)
1537 {
1538         return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
1539 }
1540
1541 static int perf_env__build_die_map(struct perf_env *env, struct perf_cpu_map *cpus,
1542                                    struct cpu_aggr_map **diep)
1543 {
1544         return cpu_map__build_map(cpus, diep, perf_env__get_die, env);
1545 }
1546
1547 static int perf_env__build_core_map(struct perf_env *env, struct perf_cpu_map *cpus,
1548                                     struct cpu_aggr_map **corep)
1549 {
1550         return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
1551 }
1552
1553 static int perf_env__build_node_map(struct perf_env *env, struct perf_cpu_map *cpus,
1554                                     struct cpu_aggr_map **nodep)
1555 {
1556         return cpu_map__build_map(cpus, nodep, perf_env__get_node, env);
1557 }
1558
1559 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
1560                                       struct perf_cpu_map *map, int idx)
1561 {
1562         return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
1563 }
1564 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
1565                                    struct perf_cpu_map *map, int idx)
1566 {
1567         return perf_env__get_die(map, idx, &perf_stat.session->header.env);
1568 }
1569
1570 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
1571                                     struct perf_cpu_map *map, int idx)
1572 {
1573         return perf_env__get_core(map, idx, &perf_stat.session->header.env);
1574 }
1575
1576 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
1577                                     struct perf_cpu_map *map, int idx)
1578 {
1579         return perf_env__get_node(map, idx, &perf_stat.session->header.env);
1580 }
1581
1582 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
1583 {
1584         struct perf_env *env = &st->session->header.env;
1585
1586         switch (stat_config.aggr_mode) {
1587         case AGGR_SOCKET:
1588                 if (perf_env__build_socket_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1589                         perror("cannot build socket map");
1590                         return -1;
1591                 }
1592                 stat_config.aggr_get_id = perf_stat__get_socket_file;
1593                 break;
1594         case AGGR_DIE:
1595                 if (perf_env__build_die_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1596                         perror("cannot build die map");
1597                         return -1;
1598                 }
1599                 stat_config.aggr_get_id = perf_stat__get_die_file;
1600                 break;
1601         case AGGR_CORE:
1602                 if (perf_env__build_core_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_core_file;
1607                 break;
1608         case AGGR_NODE:
1609                 if (perf_env__build_node_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) {
1610                         perror("cannot build core map");
1611                         return -1;
1612                 }
1613                 stat_config.aggr_get_id = perf_stat__get_node_file;
1614                 break;
1615         case AGGR_NONE:
1616         case AGGR_GLOBAL:
1617         case AGGR_THREAD:
1618         case AGGR_UNSET:
1619         default:
1620                 break;
1621         }
1622
1623         return 0;
1624 }
1625
1626 /*
1627  * Add default attributes, if there were no attributes specified or
1628  * if -d/--detailed, -d -d or -d -d -d is used:
1629  */
1630 static int add_default_attributes(void)
1631 {
1632         int err;
1633         struct perf_event_attr default_attrs0[] = {
1634
1635   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK              },
1636   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES        },
1637   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS          },
1638   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS             },
1639
1640   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES              },
1641 };
1642         struct perf_event_attr frontend_attrs[] = {
1643   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1644 };
1645         struct perf_event_attr backend_attrs[] = {
1646   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND  },
1647 };
1648         struct perf_event_attr default_attrs1[] = {
1649   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS            },
1650   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS     },
1651   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES           },
1652
1653 };
1654         struct perf_event_attr default_sw_attrs[] = {
1655   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK              },
1656   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES        },
1657   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS          },
1658   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS             },
1659 };
1660
1661 /*
1662  * Detailed stats (-d), covering the L1 and last level data caches:
1663  */
1664         struct perf_event_attr detailed_attrs[] = {
1665
1666   { .type = PERF_TYPE_HW_CACHE,
1667     .config =
1668          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1669         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1670         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1671
1672   { .type = PERF_TYPE_HW_CACHE,
1673     .config =
1674          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1675         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1676         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1677
1678   { .type = PERF_TYPE_HW_CACHE,
1679     .config =
1680          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1681         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1682         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1683
1684   { .type = PERF_TYPE_HW_CACHE,
1685     .config =
1686          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1687         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1688         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1689 };
1690
1691 /*
1692  * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1693  */
1694         struct perf_event_attr very_detailed_attrs[] = {
1695
1696   { .type = PERF_TYPE_HW_CACHE,
1697     .config =
1698          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1699         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1700         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1701
1702   { .type = PERF_TYPE_HW_CACHE,
1703     .config =
1704          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1705         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1706         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1707
1708   { .type = PERF_TYPE_HW_CACHE,
1709     .config =
1710          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1711         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1712         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1713
1714   { .type = PERF_TYPE_HW_CACHE,
1715     .config =
1716          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1717         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1718         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1719
1720   { .type = PERF_TYPE_HW_CACHE,
1721     .config =
1722          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1723         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1724         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1725
1726   { .type = PERF_TYPE_HW_CACHE,
1727     .config =
1728          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1729         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1730         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1731
1732 };
1733
1734 /*
1735  * Very, very detailed stats (-d -d -d), adding prefetch events:
1736  */
1737         struct perf_event_attr very_very_detailed_attrs[] = {
1738
1739   { .type = PERF_TYPE_HW_CACHE,
1740     .config =
1741          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1742         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1743         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1744
1745   { .type = PERF_TYPE_HW_CACHE,
1746     .config =
1747          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1748         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1749         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1750 };
1751         struct parse_events_error errinfo;
1752
1753         /* Set attrs if no event is selected and !null_run: */
1754         if (stat_config.null_run)
1755                 return 0;
1756
1757         bzero(&errinfo, sizeof(errinfo));
1758         if (transaction_run) {
1759                 /* Handle -T as -M transaction. Once platform specific metrics
1760                  * support has been added to the json files, all architectures
1761                  * will use this approach. To determine transaction support
1762                  * on an architecture test for such a metric name.
1763                  */
1764                 if (metricgroup__has_metric("transaction")) {
1765                         struct option opt = { .value = &evsel_list };
1766
1767                         return metricgroup__parse_groups(&opt, "transaction",
1768                                                          stat_config.metric_no_group,
1769                                                         stat_config.metric_no_merge,
1770                                                          &stat_config.metric_events);
1771                 }
1772
1773                 if (pmu_have_event("cpu", "cycles-ct") &&
1774                     pmu_have_event("cpu", "el-start"))
1775                         err = parse_events(evsel_list, transaction_attrs,
1776                                            &errinfo);
1777                 else
1778                         err = parse_events(evsel_list,
1779                                            transaction_limited_attrs,
1780                                            &errinfo);
1781                 if (err) {
1782                         fprintf(stderr, "Cannot set up transaction events\n");
1783                         parse_events_print_error(&errinfo, transaction_attrs);
1784                         return -1;
1785                 }
1786                 return 0;
1787         }
1788
1789         if (smi_cost) {
1790                 int smi;
1791
1792                 if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
1793                         fprintf(stderr, "freeze_on_smi is not supported.\n");
1794                         return -1;
1795                 }
1796
1797                 if (!smi) {
1798                         if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
1799                                 fprintf(stderr, "Failed to set freeze_on_smi.\n");
1800                                 return -1;
1801                         }
1802                         smi_reset = true;
1803                 }
1804
1805                 if (pmu_have_event("msr", "aperf") &&
1806                     pmu_have_event("msr", "smi")) {
1807                         if (!force_metric_only)
1808                                 stat_config.metric_only = true;
1809                         err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
1810                 } else {
1811                         fprintf(stderr, "To measure SMI cost, it needs "
1812                                 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
1813                         parse_events_print_error(&errinfo, smi_cost_attrs);
1814                         return -1;
1815                 }
1816                 if (err) {
1817                         parse_events_print_error(&errinfo, smi_cost_attrs);
1818                         fprintf(stderr, "Cannot set up SMI cost events\n");
1819                         return -1;
1820                 }
1821                 return 0;
1822         }
1823
1824         if (topdown_run) {
1825                 const char **metric_attrs = topdown_metric_attrs;
1826                 unsigned int max_level = 1;
1827                 char *str = NULL;
1828                 bool warn = false;
1829
1830                 if (!force_metric_only)
1831                         stat_config.metric_only = true;
1832
1833                 if (pmu_have_event("cpu", topdown_metric_L2_attrs[5])) {
1834                         metric_attrs = topdown_metric_L2_attrs;
1835                         max_level = 2;
1836                 }
1837
1838                 if (stat_config.topdown_level > max_level) {
1839                         pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
1840                         return -1;
1841                 } else if (!stat_config.topdown_level)
1842                         stat_config.topdown_level = max_level;
1843
1844                 if (topdown_filter_events(metric_attrs, &str, 1) < 0) {
1845                         pr_err("Out of memory\n");
1846                         return -1;
1847                 }
1848                 if (metric_attrs[0] && str) {
1849                         if (!stat_config.interval && !stat_config.metric_only) {
1850                                 fprintf(stat_config.output,
1851                                         "Topdown accuracy may decrease when measuring long periods.\n"
1852                                         "Please print the result regularly, e.g. -I1000\n");
1853                         }
1854                         goto setup_metrics;
1855                 }
1856
1857                 zfree(&str);
1858
1859                 if (stat_config.aggr_mode != AGGR_GLOBAL &&
1860                     stat_config.aggr_mode != AGGR_CORE) {
1861                         pr_err("top down event configuration requires --per-core mode\n");
1862                         return -1;
1863                 }
1864                 stat_config.aggr_mode = AGGR_CORE;
1865                 if (nr_cgroups || !target__has_cpu(&target)) {
1866                         pr_err("top down event configuration requires system-wide mode (-a)\n");
1867                         return -1;
1868                 }
1869
1870                 if (topdown_filter_events(topdown_attrs, &str,
1871                                 arch_topdown_check_group(&warn)) < 0) {
1872                         pr_err("Out of memory\n");
1873                         return -1;
1874                 }
1875                 if (topdown_attrs[0] && str) {
1876                         if (warn)
1877                                 arch_topdown_group_warn();
1878 setup_metrics:
1879                         err = parse_events(evsel_list, str, &errinfo);
1880                         if (err) {
1881                                 fprintf(stderr,
1882                                         "Cannot set up top down events %s: %d\n",
1883                                         str, err);
1884                                 parse_events_print_error(&errinfo, str);
1885                                 free(str);
1886                                 return -1;
1887                         }
1888                 } else {
1889                         fprintf(stderr, "System does not support topdown\n");
1890                         return -1;
1891                 }
1892                 free(str);
1893         }
1894
1895         if (!evsel_list->core.nr_entries) {
1896                 if (perf_pmu__has_hybrid()) {
1897                         const char *hybrid_str = "cycles,instructions,branches,branch-misses";
1898
1899                         if (target__has_cpu(&target))
1900                                 default_sw_attrs[0].config = PERF_COUNT_SW_CPU_CLOCK;
1901
1902                         if (evlist__add_default_attrs(evsel_list,
1903                                                       default_sw_attrs) < 0) {
1904                                 return -1;
1905                         }
1906
1907                         err = parse_events(evsel_list, hybrid_str, &errinfo);
1908                         if (err) {
1909                                 fprintf(stderr,
1910                                         "Cannot set up hybrid events %s: %d\n",
1911                                         hybrid_str, err);
1912                                 parse_events_print_error(&errinfo, hybrid_str);
1913                                 return -1;
1914                         }
1915                         return err;
1916                 }
1917
1918                 if (target__has_cpu(&target))
1919                         default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
1920
1921                 if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
1922                         return -1;
1923                 if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
1924                         if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
1925                                 return -1;
1926                 }
1927                 if (pmu_have_event("cpu", "stalled-cycles-backend")) {
1928                         if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0)
1929                                 return -1;
1930                 }
1931                 if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
1932                         return -1;
1933
1934                 if (arch_evlist__add_default_attrs(evsel_list) < 0)
1935                         return -1;
1936         }
1937
1938         /* Detailed events get appended to the event list: */
1939
1940         if (detailed_run <  1)
1941                 return 0;
1942
1943         /* Append detailed run extra attributes: */
1944         if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1945                 return -1;
1946
1947         if (detailed_run < 2)
1948                 return 0;
1949
1950         /* Append very detailed run extra attributes: */
1951         if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1952                 return -1;
1953
1954         if (detailed_run < 3)
1955                 return 0;
1956
1957         /* Append very, very detailed run extra attributes: */
1958         return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1959 }
1960
1961 static const char * const stat_record_usage[] = {
1962         "perf stat record [<options>]",
1963         NULL,
1964 };
1965
1966 static void init_features(struct perf_session *session)
1967 {
1968         int feat;
1969
1970         for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
1971                 perf_header__set_feat(&session->header, feat);
1972
1973         perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
1974         perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
1975         perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
1976         perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
1977         perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
1978 }
1979
1980 static int __cmd_record(int argc, const char **argv)
1981 {
1982         struct perf_session *session;
1983         struct perf_data *data = &perf_stat.data;
1984
1985         argc = parse_options(argc, argv, stat_options, stat_record_usage,
1986                              PARSE_OPT_STOP_AT_NON_OPTION);
1987
1988         if (output_name)
1989                 data->path = output_name;
1990
1991         if (stat_config.run_count != 1 || forever) {
1992                 pr_err("Cannot use -r option with perf stat record.\n");
1993                 return -1;
1994         }
1995
1996         session = perf_session__new(data, false, NULL);
1997         if (IS_ERR(session)) {
1998                 pr_err("Perf session creation failed\n");
1999                 return PTR_ERR(session);
2000         }
2001
2002         init_features(session);
2003
2004         session->evlist   = evsel_list;
2005         perf_stat.session = session;
2006         perf_stat.record  = true;
2007         return argc;
2008 }
2009
2010 static int process_stat_round_event(struct perf_session *session,
2011                                     union perf_event *event)
2012 {
2013         struct perf_record_stat_round *stat_round = &event->stat_round;
2014         struct evsel *counter;
2015         struct timespec tsh, *ts = NULL;
2016         const char **argv = session->header.env.cmdline_argv;
2017         int argc = session->header.env.nr_cmdline;
2018
2019         evlist__for_each_entry(evsel_list, counter)
2020                 perf_stat_process_counter(&stat_config, counter);
2021
2022         if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
2023                 update_stats(&walltime_nsecs_stats, stat_round->time);
2024
2025         if (stat_config.interval && stat_round->time) {
2026                 tsh.tv_sec  = stat_round->time / NSEC_PER_SEC;
2027                 tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
2028                 ts = &tsh;
2029         }
2030
2031         print_counters(ts, argc, argv);
2032         return 0;
2033 }
2034
2035 static
2036 int process_stat_config_event(struct perf_session *session,
2037                               union perf_event *event)
2038 {
2039         struct perf_tool *tool = session->tool;
2040         struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2041
2042         perf_event__read_stat_config(&stat_config, &event->stat_config);
2043
2044         if (perf_cpu_map__empty(st->cpus)) {
2045                 if (st->aggr_mode != AGGR_UNSET)
2046                         pr_warning("warning: processing task data, aggregation mode not set\n");
2047                 return 0;
2048         }
2049
2050         if (st->aggr_mode != AGGR_UNSET)
2051                 stat_config.aggr_mode = st->aggr_mode;
2052
2053         if (perf_stat.data.is_pipe)
2054                 perf_stat_init_aggr_mode();
2055         else
2056                 perf_stat_init_aggr_mode_file(st);
2057
2058         return 0;
2059 }
2060
2061 static int set_maps(struct perf_stat *st)
2062 {
2063         if (!st->cpus || !st->threads)
2064                 return 0;
2065
2066         if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
2067                 return -EINVAL;
2068
2069         perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads);
2070
2071         if (evlist__alloc_stats(evsel_list, true))
2072                 return -ENOMEM;
2073
2074         st->maps_allocated = true;
2075         return 0;
2076 }
2077
2078 static
2079 int process_thread_map_event(struct perf_session *session,
2080                              union perf_event *event)
2081 {
2082         struct perf_tool *tool = session->tool;
2083         struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2084
2085         if (st->threads) {
2086                 pr_warning("Extra thread map event, ignoring.\n");
2087                 return 0;
2088         }
2089
2090         st->threads = thread_map__new_event(&event->thread_map);
2091         if (!st->threads)
2092                 return -ENOMEM;
2093
2094         return set_maps(st);
2095 }
2096
2097 static
2098 int process_cpu_map_event(struct perf_session *session,
2099                           union perf_event *event)
2100 {
2101         struct perf_tool *tool = session->tool;
2102         struct perf_stat *st = container_of(tool, struct perf_stat, tool);
2103         struct perf_cpu_map *cpus;
2104
2105         if (st->cpus) {
2106                 pr_warning("Extra cpu map event, ignoring.\n");
2107                 return 0;
2108         }
2109
2110         cpus = cpu_map__new_data(&event->cpu_map.data);
2111         if (!cpus)
2112                 return -ENOMEM;
2113
2114         st->cpus = cpus;
2115         return set_maps(st);
2116 }
2117
2118 static const char * const stat_report_usage[] = {
2119         "perf stat report [<options>]",
2120         NULL,
2121 };
2122
2123 static struct perf_stat perf_stat = {
2124         .tool = {
2125                 .attr           = perf_event__process_attr,
2126                 .event_update   = perf_event__process_event_update,
2127                 .thread_map     = process_thread_map_event,
2128                 .cpu_map        = process_cpu_map_event,
2129                 .stat_config    = process_stat_config_event,
2130                 .stat           = perf_event__process_stat_event,
2131                 .stat_round     = process_stat_round_event,
2132         },
2133         .aggr_mode = AGGR_UNSET,
2134 };
2135
2136 static int __cmd_report(int argc, const char **argv)
2137 {
2138         struct perf_session *session;
2139         const struct option options[] = {
2140         OPT_STRING('i', "input", &input_name, "file", "input file name"),
2141         OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
2142                      "aggregate counts per processor socket", AGGR_SOCKET),
2143         OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode,
2144                      "aggregate counts per processor die", AGGR_DIE),
2145         OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
2146                      "aggregate counts per physical processor core", AGGR_CORE),
2147         OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode,
2148                      "aggregate counts per numa node", AGGR_NODE),
2149         OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
2150                      "disable CPU count aggregation", AGGR_NONE),
2151         OPT_END()
2152         };
2153         struct stat st;
2154         int ret;
2155
2156         argc = parse_options(argc, argv, options, stat_report_usage, 0);
2157
2158         if (!input_name || !strlen(input_name)) {
2159                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
2160                         input_name = "-";
2161                 else
2162                         input_name = "perf.data";
2163         }
2164
2165         perf_stat.data.path = input_name;
2166         perf_stat.data.mode = PERF_DATA_MODE_READ;
2167
2168         session = perf_session__new(&perf_stat.data, false, &perf_stat.tool);
2169         if (IS_ERR(session))
2170                 return PTR_ERR(session);
2171
2172         perf_stat.session  = session;
2173         stat_config.output = stderr;
2174         evsel_list         = session->evlist;
2175
2176         ret = perf_session__process_events(session);
2177         if (ret)
2178                 return ret;
2179
2180         perf_session__delete(session);
2181         return 0;
2182 }
2183
2184 static void setup_system_wide(int forks)
2185 {
2186         /*
2187          * Make system wide (-a) the default target if
2188          * no target was specified and one of following
2189          * conditions is met:
2190          *
2191          *   - there's no workload specified
2192          *   - there is workload specified but all requested
2193          *     events are system wide events
2194          */
2195         if (!target__none(&target))
2196                 return;
2197
2198         if (!forks)
2199                 target.system_wide = true;
2200         else {
2201                 struct evsel *counter;
2202
2203                 evlist__for_each_entry(evsel_list, counter) {
2204                         if (!counter->core.system_wide &&
2205                             strcmp(counter->name, "duration_time")) {
2206                                 return;
2207                         }
2208                 }
2209
2210                 if (evsel_list->core.nr_entries)
2211                         target.system_wide = true;
2212         }
2213 }
2214
2215 int cmd_stat(int argc, const char **argv)
2216 {
2217         const char * const stat_usage[] = {
2218                 "perf stat [<options>] [<command>]",
2219                 NULL
2220         };
2221         int status = -EINVAL, run_idx, err;
2222         const char *mode;
2223         FILE *output = stderr;
2224         unsigned int interval, timeout;
2225         const char * const stat_subcommands[] = { "record", "report" };
2226         char errbuf[BUFSIZ];
2227
2228         setlocale(LC_ALL, "");
2229
2230         evsel_list = evlist__new();
2231         if (evsel_list == NULL)
2232                 return -ENOMEM;
2233
2234         parse_events__shrink_config_terms();
2235
2236         /* String-parsing callback-based options would segfault when negated */
2237         set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG);
2238         set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG);
2239         set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG);
2240
2241         argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
2242                                         (const char **) stat_usage,
2243                                         PARSE_OPT_STOP_AT_NON_OPTION);
2244         perf_stat__collect_metric_expr(evsel_list);
2245         perf_stat__init_shadow_stats();
2246
2247         if (stat_config.csv_sep) {
2248                 stat_config.csv_output = true;
2249                 if (!strcmp(stat_config.csv_sep, "\\t"))
2250                         stat_config.csv_sep = "\t";
2251         } else
2252                 stat_config.csv_sep = DEFAULT_SEPARATOR;
2253
2254         if (argc && !strncmp(argv[0], "rec", 3)) {
2255                 argc = __cmd_record(argc, argv);
2256                 if (argc < 0)
2257                         return -1;
2258         } else if (argc && !strncmp(argv[0], "rep", 3))
2259                 return __cmd_report(argc, argv);
2260
2261         interval = stat_config.interval;
2262         timeout = stat_config.timeout;
2263
2264         /*
2265          * For record command the -o is already taken care of.
2266          */
2267         if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
2268                 output = NULL;
2269
2270         if (output_name && output_fd) {
2271                 fprintf(stderr, "cannot use both --output and --log-fd\n");
2272                 parse_options_usage(stat_usage, stat_options, "o", 1);
2273                 parse_options_usage(NULL, stat_options, "log-fd", 0);
2274                 goto out;
2275         }
2276
2277         if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) {
2278                 fprintf(stderr, "--metric-only is not supported with --per-thread\n");
2279                 goto out;
2280         }
2281
2282         if (stat_config.metric_only && stat_config.run_count > 1) {
2283                 fprintf(stderr, "--metric-only is not supported with -r\n");
2284                 goto out;
2285         }
2286
2287         if (stat_config.walltime_run_table && stat_config.run_count <= 1) {
2288                 fprintf(stderr, "--table is only supported with -r\n");
2289                 parse_options_usage(stat_usage, stat_options, "r", 1);
2290                 parse_options_usage(NULL, stat_options, "table", 0);
2291                 goto out;
2292         }
2293
2294         if (output_fd < 0) {
2295                 fprintf(stderr, "argument to --log-fd must be a > 0\n");
2296                 parse_options_usage(stat_usage, stat_options, "log-fd", 0);
2297                 goto out;
2298         }
2299
2300         if (!output && !stat_config.quiet) {
2301                 struct timespec tm;
2302                 mode = append_file ? "a" : "w";
2303
2304                 output = fopen(output_name, mode);
2305                 if (!output) {
2306                         perror("failed to create output file");
2307                         return -1;
2308                 }
2309                 clock_gettime(CLOCK_REALTIME, &tm);
2310                 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
2311         } else if (output_fd > 0) {
2312                 mode = append_file ? "a" : "w";
2313                 output = fdopen(output_fd, mode);
2314                 if (!output) {
2315                         perror("Failed opening logfd");
2316                         return -errno;
2317                 }
2318         }
2319
2320         stat_config.output = output;
2321
2322         /*
2323          * let the spreadsheet do the pretty-printing
2324          */
2325         if (stat_config.csv_output) {
2326                 /* User explicitly passed -B? */
2327                 if (big_num_opt == 1) {
2328                         fprintf(stderr, "-B option not supported with -x\n");
2329                         parse_options_usage(stat_usage, stat_options, "B", 1);
2330                         parse_options_usage(NULL, stat_options, "x", 1);
2331                         goto out;
2332                 } else /* Nope, so disable big number formatting */
2333                         stat_config.big_num = false;
2334         } else if (big_num_opt == 0) /* User passed --no-big-num */
2335                 stat_config.big_num = false;
2336
2337         err = target__validate(&target);
2338         if (err) {
2339                 target__strerror(&target, err, errbuf, BUFSIZ);
2340                 pr_warning("%s\n", errbuf);
2341         }
2342
2343         setup_system_wide(argc);
2344
2345         /*
2346          * Display user/system times only for single
2347          * run and when there's specified tracee.
2348          */
2349         if ((stat_config.run_count == 1) && target__none(&target))
2350                 stat_config.ru_display = true;
2351
2352         if (stat_config.run_count < 0) {
2353                 pr_err("Run count must be a positive number\n");
2354                 parse_options_usage(stat_usage, stat_options, "r", 1);
2355                 goto out;
2356         } else if (stat_config.run_count == 0) {
2357                 forever = true;
2358                 stat_config.run_count = 1;
2359         }
2360
2361         if (stat_config.walltime_run_table) {
2362                 stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0]));
2363                 if (!stat_config.walltime_run) {
2364                         pr_err("failed to setup -r option");
2365                         goto out;
2366                 }
2367         }
2368
2369         if ((stat_config.aggr_mode == AGGR_THREAD) &&
2370                 !target__has_task(&target)) {
2371                 if (!target.system_wide || target.cpu_list) {
2372                         fprintf(stderr, "The --per-thread option is only "
2373                                 "available when monitoring via -p -t -a "
2374                                 "options or only --per-thread.\n");
2375                         parse_options_usage(NULL, stat_options, "p", 1);
2376                         parse_options_usage(NULL, stat_options, "t", 1);
2377                         goto out;
2378                 }
2379         }
2380
2381         /*
2382          * no_aggr, cgroup are for system-wide only
2383          * --per-thread is aggregated per thread, we dont mix it with cpu mode
2384          */
2385         if (((stat_config.aggr_mode != AGGR_GLOBAL &&
2386               stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
2387             !target__has_cpu(&target)) {
2388                 fprintf(stderr, "both cgroup and no-aggregation "
2389                         "modes only available in system-wide mode\n");
2390
2391                 parse_options_usage(stat_usage, stat_options, "G", 1);
2392                 parse_options_usage(NULL, stat_options, "A", 1);
2393                 parse_options_usage(NULL, stat_options, "a", 1);
2394                 goto out;
2395         }
2396
2397         if (stat_config.iostat_run) {
2398                 status = iostat_prepare(evsel_list, &stat_config);
2399                 if (status)
2400                         goto out;
2401                 if (iostat_mode == IOSTAT_LIST) {
2402                         iostat_list(evsel_list, &stat_config);
2403                         goto out;
2404                 } else if (verbose)
2405                         iostat_list(evsel_list, &stat_config);
2406         }
2407
2408         if (add_default_attributes())
2409                 goto out;
2410
2411         if (stat_config.cgroup_list) {
2412                 if (nr_cgroups > 0) {
2413                         pr_err("--cgroup and --for-each-cgroup cannot be used together\n");
2414                         parse_options_usage(stat_usage, stat_options, "G", 1);
2415                         parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
2416                         goto out;
2417                 }
2418
2419                 if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
2420                                           &stat_config.metric_events, true) < 0) {
2421                         parse_options_usage(stat_usage, stat_options,
2422                                             "for-each-cgroup", 0);
2423                         goto out;
2424                 }
2425         }
2426
2427         if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
2428                 target.per_thread = true;
2429
2430         if (evlist__create_maps(evsel_list, &target) < 0) {
2431                 if (target__has_task(&target)) {
2432                         pr_err("Problems finding threads of monitor\n");
2433                         parse_options_usage(stat_usage, stat_options, "p", 1);
2434                         parse_options_usage(NULL, stat_options, "t", 1);
2435                 } else if (target__has_cpu(&target)) {
2436                         perror("failed to parse CPUs map");
2437                         parse_options_usage(stat_usage, stat_options, "C", 1);
2438                         parse_options_usage(NULL, stat_options, "a", 1);
2439                 }
2440                 goto out;
2441         }
2442
2443         evlist__check_cpu_maps(evsel_list);
2444
2445         if (perf_pmu__has_hybrid())
2446                 stat_config.no_merge = true;
2447
2448         /*
2449          * Initialize thread_map with comm names,
2450          * so we could print it out on output.
2451          */
2452         if (stat_config.aggr_mode == AGGR_THREAD) {
2453                 thread_map__read_comms(evsel_list->core.threads);
2454                 if (target.system_wide) {
2455                         if (runtime_stat_new(&stat_config,
2456                                 perf_thread_map__nr(evsel_list->core.threads))) {
2457                                 goto out;
2458                         }
2459                 }
2460         }
2461
2462         if (stat_config.aggr_mode == AGGR_NODE)
2463                 cpu__setup_cpunode_map();
2464
2465         if (stat_config.times && interval)
2466                 interval_count = true;
2467         else if (stat_config.times && !interval) {
2468                 pr_err("interval-count option should be used together with "
2469                                 "interval-print.\n");
2470                 parse_options_usage(stat_usage, stat_options, "interval-count", 0);
2471                 parse_options_usage(stat_usage, stat_options, "I", 1);
2472                 goto out;
2473         }
2474
2475         if (timeout && timeout < 100) {
2476                 if (timeout < 10) {
2477                         pr_err("timeout must be >= 10ms.\n");
2478                         parse_options_usage(stat_usage, stat_options, "timeout", 0);
2479                         goto out;
2480                 } else
2481                         pr_warning("timeout < 100ms. "
2482                                    "The overhead percentage could be high in some cases. "
2483                                    "Please proceed with caution.\n");
2484         }
2485         if (timeout && interval) {
2486                 pr_err("timeout option is not supported with interval-print.\n");
2487                 parse_options_usage(stat_usage, stat_options, "timeout", 0);
2488                 parse_options_usage(stat_usage, stat_options, "I", 1);
2489                 goto out;
2490         }
2491
2492         if (evlist__alloc_stats(evsel_list, interval))
2493                 goto out;
2494
2495         if (perf_stat_init_aggr_mode())
2496                 goto out;
2497
2498         /*
2499          * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
2500          * while avoiding that older tools show confusing messages.
2501          *
2502          * However for pipe sessions we need to keep it zero,
2503          * because script's perf_evsel__check_attr is triggered
2504          * by attr->sample_type != 0, and we can't run it on
2505          * stat sessions.
2506          */
2507         stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe);
2508
2509         /*
2510          * We dont want to block the signals - that would cause
2511          * child tasks to inherit that and Ctrl-C would not work.
2512          * What we want is for Ctrl-C to work in the exec()-ed
2513          * task, but being ignored by perf stat itself:
2514          */
2515         atexit(sig_atexit);
2516         if (!forever)
2517                 signal(SIGINT,  skip_signal);
2518         signal(SIGCHLD, skip_signal);
2519         signal(SIGALRM, skip_signal);
2520         signal(SIGABRT, skip_signal);
2521
2522         if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack))
2523                 goto out;
2524
2525         status = 0;
2526         for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) {
2527                 if (stat_config.run_count != 1 && verbose > 0)
2528                         fprintf(output, "[ perf stat: executing run #%d ... ]\n",
2529                                 run_idx + 1);
2530
2531                 if (run_idx != 0)
2532                         evlist__reset_prev_raw_counts(evsel_list);
2533
2534                 status = run_perf_stat(argc, argv, run_idx);
2535                 if (forever && status != -1 && !interval) {
2536                         print_counters(NULL, argc, argv);
2537                         perf_stat__reset_stats();
2538                 }
2539         }
2540
2541         if (!forever && status != -1 && (!interval || stat_config.summary))
2542                 print_counters(NULL, argc, argv);
2543
2544         evlist__finalize_ctlfd(evsel_list);
2545
2546         if (STAT_RECORD) {
2547                 /*
2548                  * We synthesize the kernel mmap record just so that older tools
2549                  * don't emit warnings about not being able to resolve symbols
2550                  * due to /proc/sys/kernel/kptr_restrict settings and instead provide
2551                  * a saner message about no samples being in the perf.data file.
2552                  *
2553                  * This also serves to suppress a warning about f_header.data.size == 0
2554                  * in header.c at the moment 'perf stat record' gets introduced, which
2555                  * is not really needed once we start adding the stat specific PERF_RECORD_
2556                  * records, but the need to suppress the kptr_restrict messages in older
2557                  * tools remain  -acme
2558                  */
2559                 int fd = perf_data__fd(&perf_stat.data);
2560
2561                 err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
2562                                                          process_synthesized_event,
2563                                                          &perf_stat.session->machines.host);
2564                 if (err) {
2565                         pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
2566                                    "older tools may produce warnings about this file\n.");
2567                 }
2568
2569                 if (!interval) {
2570                         if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
2571                                 pr_err("failed to write stat round event\n");
2572                 }
2573
2574                 if (!perf_stat.data.is_pipe) {
2575                         perf_stat.session->header.data_size += perf_stat.bytes_written;
2576                         perf_session__write_header(perf_stat.session, evsel_list, fd, true);
2577                 }
2578
2579                 evlist__close(evsel_list);
2580                 perf_session__delete(perf_stat.session);
2581         }
2582
2583         perf_stat__exit_aggr_mode();
2584         evlist__free_stats(evsel_list);
2585 out:
2586         if (stat_config.iostat_run)
2587                 iostat_release(evsel_list);
2588
2589         zfree(&stat_config.walltime_run);
2590
2591         if (smi_cost && smi_reset)
2592                 sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
2593
2594         evlist__delete(evsel_list);
2595
2596         metricgroup__rblist_exit(&stat_config.metric_events);
2597         runtime_stat_delete(&stat_config);
2598         evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
2599
2600         return status;
2601 }