tools/perf/util/stat.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <errno.h>
   3 #include <linux/err.h>
   4 #include <inttypes.h>
   5 #include <math.h>
   6 #include <string.h>
   7 #include "counts.h"
   8 #include "cpumap.h"
   9 #include "debug.h"
  10 #include "header.h"
  11 #include "stat.h"
  12 #include "session.h"
  13 #include "target.h"
  14 #include "evlist.h"
  15 #include "evsel.h"
  16 #include "thread_map.h"
  17 #include "util/hashmap.h"
  18 #include <linux/zalloc.h>
  19
  20 void update_stats(struct stats *stats, u64 val)
  21 {
  22         double delta;
  23
  24         stats->n++;
  25         delta = val - stats->mean;
  26         stats->mean += delta / stats->n;
  27         stats->M2 += delta*(val - stats->mean);
  28
  29         if (val > stats->max)
  30                 stats->max = val;
  31
  32         if (val < stats->min)
  33                 stats->min = val;
  34 }
  35
  36 double avg_stats(struct stats *stats)
  37 {
  38         return stats->mean;
  39 }
  40
  41 /*
  42  * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
  43  *
  44  *       (\Sum n_i^2) - ((\Sum n_i)^2)/n
  45  * s^2 = -------------------------------
  46  *                  n - 1
  47  *
  48  * http://en.wikipedia.org/wiki/Stddev
  49  *
  50  * The std dev of the mean is related to the std dev by:
  51  *
  52  *             s
  53  * s_mean = -------
  54  *          sqrt(n)
  55  *
  56  */
  57 double stddev_stats(struct stats *stats)
  58 {
  59         double variance, variance_mean;
  60
  61         if (stats->n < 2)
  62                 return 0.0;
  63
  64         variance = stats->M2 / (stats->n - 1);
  65         variance_mean = variance / stats->n;
  66
  67         return sqrt(variance_mean);
  68 }
  69
  70 double rel_stddev_stats(double stddev, double avg)
  71 {
  72         double pct = 0.0;
  73
  74         if (avg)
  75                 pct = 100.0 * stddev/avg;
  76
  77         return pct;
  78 }
  79
  80 static void evsel__reset_aggr_stats(struct evsel *evsel)
  81 {
  82         struct perf_stat_evsel *ps = evsel->stats;
  83         struct perf_stat_aggr *aggr = ps->aggr;
  84
  85         if (aggr)
  86                 memset(aggr, 0, sizeof(*aggr) * ps->nr_aggr);
  87 }
  88
  89 static void evsel__reset_stat_priv(struct evsel *evsel)
  90 {
  91         struct perf_stat_evsel *ps = evsel->stats;
  92
  93         init_stats(&ps->res_stats);
  94         evsel__reset_aggr_stats(evsel);
  95 }
  96
  97 static int evsel__alloc_aggr_stats(struct evsel *evsel, int nr_aggr)
  98 {
  99         struct perf_stat_evsel *ps = evsel->stats;
 100
 101         if (ps == NULL)
 102                 return 0;
 103
 104         ps->nr_aggr = nr_aggr;
 105         ps->aggr = calloc(nr_aggr, sizeof(*ps->aggr));
 106         if (ps->aggr == NULL)
 107                 return -ENOMEM;
 108
 109         return 0;
 110 }
 111
 112 int evlist__alloc_aggr_stats(struct evlist *evlist, int nr_aggr)
 113 {
 114         struct evsel *evsel;
 115
 116         evlist__for_each_entry(evlist, evsel) {
 117                 if (evsel__alloc_aggr_stats(evsel, nr_aggr) < 0)
 118                         return -1;
 119         }
 120         return 0;
 121 }
 122
 123 static int evsel__alloc_stat_priv(struct evsel *evsel, int nr_aggr)
 124 {
 125         struct perf_stat_evsel *ps;
 126
 127         ps = zalloc(sizeof(*ps));
 128         if (ps == NULL)
 129                 return -ENOMEM;
 130
 131         evsel->stats = ps;
 132
 133         if (nr_aggr && evsel__alloc_aggr_stats(evsel, nr_aggr) < 0) {
 134                 evsel->stats = NULL;
 135                 free(ps);
 136                 return -ENOMEM;
 137         }
 138
 139         evsel__reset_stat_priv(evsel);
 140         return 0;
 141 }
 142
 143 static void evsel__free_stat_priv(struct evsel *evsel)
 144 {
 145         struct perf_stat_evsel *ps = evsel->stats;
 146
 147         if (ps) {
 148                 zfree(&ps->aggr);
 149                 zfree(&ps->group_data);
 150         }
 151         zfree(&evsel->stats);
 152 }
 153
 154 static int evsel__alloc_prev_raw_counts(struct evsel *evsel)
 155 {
 156         int cpu_map_nr = evsel__nr_cpus(evsel);
 157         int nthreads = perf_thread_map__nr(evsel->core.threads);
 158         struct perf_counts *counts;
 159
 160         counts = perf_counts__new(cpu_map_nr, nthreads);
 161         if (counts)
 162                 evsel->prev_raw_counts = counts;
 163
 164         return counts ? 0 : -ENOMEM;
 165 }
 166
 167 static void evsel__free_prev_raw_counts(struct evsel *evsel)
 168 {
 169         perf_counts__delete(evsel->prev_raw_counts);
 170         evsel->prev_raw_counts = NULL;
 171 }
 172
 173 static void evsel__reset_prev_raw_counts(struct evsel *evsel)
 174 {
 175         if (evsel->prev_raw_counts)
 176                 perf_counts__reset(evsel->prev_raw_counts);
 177 }
 178
 179 static int evsel__alloc_stats(struct evsel *evsel, int nr_aggr, bool alloc_raw)
 180 {
 181         if (evsel__alloc_stat_priv(evsel, nr_aggr) < 0 ||
 182             evsel__alloc_counts(evsel) < 0 ||
 183             (alloc_raw && evsel__alloc_prev_raw_counts(evsel) < 0))
 184                 return -ENOMEM;
 185
 186         return 0;
 187 }
 188
 189 int evlist__alloc_stats(struct perf_stat_config *config,
 190                         struct evlist *evlist, bool alloc_raw)
 191 {
 192         struct evsel *evsel;
 193         int nr_aggr = 0;
 194
 195         if (config && config->aggr_map)
 196                 nr_aggr = config->aggr_map->nr;
 197
 198         evlist__for_each_entry(evlist, evsel) {
 199                 if (evsel__alloc_stats(evsel, nr_aggr, alloc_raw))
 200                         goto out_free;
 201         }
 202
 203         return 0;
 204
 205 out_free:
 206         evlist__free_stats(evlist);
 207         return -1;
 208 }
 209
 210 void evlist__free_stats(struct evlist *evlist)
 211 {
 212         struct evsel *evsel;
 213
 214         evlist__for_each_entry(evlist, evsel) {
 215                 evsel__free_stat_priv(evsel);
 216                 evsel__free_counts(evsel);
 217                 evsel__free_prev_raw_counts(evsel);
 218         }
 219 }
 220
 221 void evlist__reset_stats(struct evlist *evlist)
 222 {
 223         struct evsel *evsel;
 224
 225         evlist__for_each_entry(evlist, evsel) {
 226                 evsel__reset_stat_priv(evsel);
 227                 evsel__reset_counts(evsel);
 228         }
 229 }
 230
 231 void evlist__reset_aggr_stats(struct evlist *evlist)
 232 {
 233         struct evsel *evsel;
 234
 235         evlist__for_each_entry(evlist, evsel)
 236                 evsel__reset_aggr_stats(evsel);
 237 }
 238
 239 void evlist__reset_prev_raw_counts(struct evlist *evlist)
 240 {
 241         struct evsel *evsel;
 242
 243         evlist__for_each_entry(evlist, evsel)
 244                 evsel__reset_prev_raw_counts(evsel);
 245 }
 246
 247 static void evsel__copy_prev_raw_counts(struct evsel *evsel)
 248 {
 249         int idx, nthreads = perf_thread_map__nr(evsel->core.threads);
 250
 251         for (int thread = 0; thread < nthreads; thread++) {
 252                 perf_cpu_map__for_each_idx(idx, evsel__cpus(evsel)) {
 253                         *perf_counts(evsel->counts, idx, thread) =
 254                                 *perf_counts(evsel->prev_raw_counts, idx, thread);
 255                 }
 256         }
 257 }
 258
 259 void evlist__copy_prev_raw_counts(struct evlist *evlist)
 260 {
 261         struct evsel *evsel;
 262
 263         evlist__for_each_entry(evlist, evsel)
 264                 evsel__copy_prev_raw_counts(evsel);
 265 }
 266
 267 static void evsel__copy_res_stats(struct evsel *evsel)
 268 {
 269         struct perf_stat_evsel *ps = evsel->stats;
 270
 271         /*
 272          * For GLOBAL aggregation mode, it updates the counts for each run
 273          * in the evsel->stats.res_stats.  See perf_stat_process_counter().
 274          */
 275         *ps->aggr[0].counts.values = avg_stats(&ps->res_stats);
 276 }
 277
 278 void evlist__copy_res_stats(struct perf_stat_config *config, struct evlist *evlist)
 279 {
 280         struct evsel *evsel;
 281
 282         if (config->aggr_mode != AGGR_GLOBAL)
 283                 return;
 284
 285         evlist__for_each_entry(evlist, evsel)
 286                 evsel__copy_res_stats(evsel);
 287 }
 288
 289 static size_t pkg_id_hash(long __key, void *ctx __maybe_unused)
 290 {
 291         uint64_t *key = (uint64_t *) __key;
 292
 293         return *key & 0xffffffff;
 294 }
 295
 296 static bool pkg_id_equal(long __key1, long __key2, void *ctx __maybe_unused)
 297 {
 298         uint64_t *key1 = (uint64_t *) __key1;
 299         uint64_t *key2 = (uint64_t *) __key2;
 300
 301         return *key1 == *key2;
 302 }
 303
 304 static int check_per_pkg(struct evsel *counter, struct perf_counts_values *vals,
 305                          int cpu_map_idx, bool *skip)
 306 {
 307         struct hashmap *mask = counter->per_pkg_mask;
 308         struct perf_cpu_map *cpus = evsel__cpus(counter);
 309         struct perf_cpu cpu = perf_cpu_map__cpu(cpus, cpu_map_idx);
 310         int s, d, ret = 0;
 311         uint64_t *key;
 312
 313         *skip = false;
 314
 315         if (!counter->per_pkg)
 316                 return 0;
 317
 318         if (perf_cpu_map__is_any_cpu_or_is_empty(cpus))
 319                 return 0;
 320
 321         if (!mask) {
 322                 mask = hashmap__new(pkg_id_hash, pkg_id_equal, NULL);
 323                 if (IS_ERR(mask))
 324                         return -ENOMEM;
 325
 326                 counter->per_pkg_mask = mask;
 327         }
 328
 329         /*
 330          * we do not consider an event that has not run as a good
 331          * instance to mark a package as used (skip=1). Otherwise
 332          * we may run into a situation where the first CPU in a package
 333          * is not running anything, yet the second is, and this function
 334          * would mark the package as used after the first CPU and would
 335          * not read the values from the second CPU.
 336          */
 337         if (!(vals->run && vals->ena))
 338                 return 0;
 339
 340         s = cpu__get_socket_id(cpu);
 341         if (s < 0)
 342                 return -1;
 343
 344         /*
 345          * On multi-die system, die_id > 0. On no-die system, die_id = 0.
 346          * We use hashmap(socket, die) to check the used socket+die pair.
 347          */
 348         d = cpu__get_die_id(cpu);
 349         if (d < 0)
 350                 return -1;
 351
 352         key = malloc(sizeof(*key));
 353         if (!key)
 354                 return -ENOMEM;
 355
 356         *key = (uint64_t)d << 32 | s;
 357         if (hashmap__find(mask, key, NULL)) {
 358                 *skip = true;
 359                 free(key);
 360         } else
 361                 ret = hashmap__add(mask, key, 1);
 362
 363         return ret;
 364 }
 365
 366 static bool evsel__count_has_error(struct evsel *evsel,
 367                                    struct perf_counts_values *count,
 368                                    struct perf_stat_config *config)
 369 {
 370         /* the evsel was failed already */
 371         if (evsel->err || evsel->counts->scaled == -1)
 372                 return true;
 373
 374         /* this is meaningful for CPU aggregation modes only */
 375         if (config->aggr_mode == AGGR_GLOBAL)
 376                 return false;
 377
 378         /* it's considered ok when it actually ran */
 379         if (count->ena != 0 && count->run != 0)
 380                 return false;
 381
 382         return true;
 383 }
 384
 385 static int
 386 process_counter_values(struct perf_stat_config *config, struct evsel *evsel,
 387                        int cpu_map_idx, int thread,
 388                        struct perf_counts_values *count)
 389 {
 390         struct perf_stat_evsel *ps = evsel->stats;
 391         static struct perf_counts_values zero;
 392         bool skip = false;
 393
 394         if (check_per_pkg(evsel, count, cpu_map_idx, &skip)) {
 395                 pr_err("failed to read per-pkg counter\n");
 396                 return -1;
 397         }
 398
 399         if (skip)
 400                 count = &zero;
 401
 402         if (!evsel->snapshot)
 403                 evsel__compute_deltas(evsel, cpu_map_idx, thread, count);
 404         perf_counts_values__scale(count, config->scale, NULL);
 405
 406         if (config->aggr_mode == AGGR_THREAD) {
 407                 struct perf_counts_values *aggr_counts = &ps->aggr[thread].counts;
 408
 409                 /*
 410                  * Skip value 0 when enabling --per-thread globally,
 411                  * otherwise too many 0 output.
 412                  */
 413                 if (count->val == 0 && config->system_wide)
 414                         return 0;
 415
 416                 ps->aggr[thread].nr++;
 417
 418                 aggr_counts->val += count->val;
 419                 aggr_counts->ena += count->ena;
 420                 aggr_counts->run += count->run;
 421                 return 0;
 422         }
 423
 424         if (ps->aggr) {
 425                 struct perf_cpu cpu = perf_cpu_map__cpu(evsel->core.cpus, cpu_map_idx);
 426                 struct aggr_cpu_id aggr_id = config->aggr_get_id(config, cpu);
 427                 struct perf_stat_aggr *ps_aggr;
 428                 int i;
 429
 430                 for (i = 0; i < ps->nr_aggr; i++) {
 431                         if (!aggr_cpu_id__equal(&aggr_id, &config->aggr_map->map[i]))
 432                                 continue;
 433
 434                         ps_aggr = &ps->aggr[i];
 435                         ps_aggr->nr++;
 436
 437                         /*
 438                          * When any result is bad, make them all to give consistent output
 439                          * in interval mode.  But per-task counters can have 0 enabled time
 440                          * when some tasks are idle.
 441                          */
 442                         if (evsel__count_has_error(evsel, count, config) && !ps_aggr->failed) {
 443                                 ps_aggr->counts.val = 0;
 444                                 ps_aggr->counts.ena = 0;
 445                                 ps_aggr->counts.run = 0;
 446                                 ps_aggr->failed = true;
 447                         }
 448
 449                         if (!ps_aggr->failed) {
 450                                 ps_aggr->counts.val += count->val;
 451                                 ps_aggr->counts.ena += count->ena;
 452                                 ps_aggr->counts.run += count->run;
 453                         }
 454                         break;
 455                 }
 456         }
 457
 458         return 0;
 459 }
 460
 461 static int process_counter_maps(struct perf_stat_config *config,
 462                                 struct evsel *counter)
 463 {
 464         int nthreads = perf_thread_map__nr(counter->core.threads);
 465         int ncpus = evsel__nr_cpus(counter);
 466         int idx, thread;
 467
 468         for (thread = 0; thread < nthreads; thread++) {
 469                 for (idx = 0; idx < ncpus; idx++) {
 470                         if (process_counter_values(config, counter, idx, thread,
 471                                                    perf_counts(counter->counts, idx, thread)))
 472                                 return -1;
 473                 }
 474         }
 475
 476         return 0;
 477 }
 478
 479 int perf_stat_process_counter(struct perf_stat_config *config,
 480                               struct evsel *counter)
 481 {
 482         struct perf_stat_evsel *ps = counter->stats;
 483         u64 *count;
 484         int ret;
 485
 486         if (counter->per_pkg)
 487                 evsel__zero_per_pkg(counter);
 488
 489         ret = process_counter_maps(config, counter);
 490         if (ret)
 491                 return ret;
 492
 493         if (config->aggr_mode != AGGR_GLOBAL)
 494                 return 0;
 495
 496         /*
 497          * GLOBAL aggregation mode only has a single aggr counts,
 498          * so we can use ps->aggr[0] as the actual output.
 499          */
 500         count = ps->aggr[0].counts.values;
 501         update_stats(&ps->res_stats, *count);
 502
 503         if (verbose > 0) {
 504                 fprintf(config->output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
 505                         evsel__name(counter), count[0], count[1], count[2]);
 506         }
 507
 508         return 0;
 509 }
 510
 511 static int evsel__merge_aggr_counters(struct evsel *evsel, struct evsel *alias)
 512 {
 513         struct perf_stat_evsel *ps_a = evsel->stats;
 514         struct perf_stat_evsel *ps_b = alias->stats;
 515         int i;
 516
 517         if (ps_a->aggr == NULL && ps_b->aggr == NULL)
 518                 return 0;
 519
 520         if (ps_a->nr_aggr != ps_b->nr_aggr) {
 521                 pr_err("Unmatched aggregation mode between aliases\n");
 522                 return -1;
 523         }
 524
 525         for (i = 0; i < ps_a->nr_aggr; i++) {
 526                 struct perf_counts_values *aggr_counts_a = &ps_a->aggr[i].counts;
 527                 struct perf_counts_values *aggr_counts_b = &ps_b->aggr[i].counts;
 528
 529                 /* NB: don't increase aggr.nr for aliases */
 530
 531                 aggr_counts_a->val += aggr_counts_b->val;
 532                 aggr_counts_a->ena += aggr_counts_b->ena;
 533                 aggr_counts_a->run += aggr_counts_b->run;
 534         }
 535
 536         return 0;
 537 }
 538 /* events should have the same name, scale, unit, cgroup but on different PMUs */
 539 static bool evsel__is_alias(struct evsel *evsel_a, struct evsel *evsel_b)
 540 {
 541         if (strcmp(evsel__name(evsel_a), evsel__name(evsel_b)))
 542                 return false;
 543
 544         if (evsel_a->scale != evsel_b->scale)
 545                 return false;
 546
 547         if (evsel_a->cgrp != evsel_b->cgrp)
 548                 return false;
 549
 550         if (strcmp(evsel_a->unit, evsel_b->unit))
 551                 return false;
 552
 553         if (evsel__is_clock(evsel_a) != evsel__is_clock(evsel_b))
 554                 return false;
 555
 556         return evsel_a->pmu != evsel_b->pmu;
 557 }
 558
 559 static void evsel__merge_aliases(struct evsel *evsel)
 560 {
 561         struct evlist *evlist = evsel->evlist;
 562         struct evsel *alias;
 563
 564         alias = list_prepare_entry(evsel, &(evlist->core.entries), core.node);
 565         list_for_each_entry_continue(alias, &evlist->core.entries, core.node) {
 566                 /* Merge the same events on different PMUs. */
 567                 if (evsel__is_alias(evsel, alias)) {
 568                         evsel__merge_aggr_counters(evsel, alias);
 569                         alias->merged_stat = true;
 570                 }
 571         }
 572 }
 573
 574 static bool evsel__should_merge_hybrid(const struct evsel *evsel,
 575                                        const struct perf_stat_config *config)
 576 {
 577         return config->hybrid_merge && evsel__is_hybrid(evsel);
 578 }
 579
 580 static void evsel__merge_stats(struct evsel *evsel, struct perf_stat_config *config)
 581 {
 582         /* this evsel is already merged */
 583         if (evsel->merged_stat)
 584                 return;
 585
 586         if (evsel->auto_merge_stats || evsel__should_merge_hybrid(evsel, config))
 587                 evsel__merge_aliases(evsel);
 588 }
 589
 590 /* merge the same uncore and hybrid events if requested */
 591 void perf_stat_merge_counters(struct perf_stat_config *config, struct evlist *evlist)
 592 {
 593         struct evsel *evsel;
 594
 595         if (config->aggr_mode == AGGR_NONE)
 596                 return;
 597
 598         evlist__for_each_entry(evlist, evsel)
 599                 evsel__merge_stats(evsel, config);
 600 }
 601
 602 static void evsel__update_percore_stats(struct evsel *evsel, struct aggr_cpu_id *core_id)
 603 {
 604         struct perf_stat_evsel *ps = evsel->stats;
 605         struct perf_counts_values counts = { 0, };
 606         struct aggr_cpu_id id;
 607         struct perf_cpu cpu;
 608         int idx;
 609
 610         /* collect per-core counts */
 611         perf_cpu_map__for_each_cpu(cpu, idx, evsel->core.cpus) {
 612                 struct perf_stat_aggr *aggr = &ps->aggr[idx];
 613
 614                 id = aggr_cpu_id__core(cpu, NULL);
 615                 if (!aggr_cpu_id__equal(core_id, &id))
 616                         continue;
 617
 618                 counts.val += aggr->counts.val;
 619                 counts.ena += aggr->counts.ena;
 620                 counts.run += aggr->counts.run;
 621         }
 622
 623         /* update aggregated per-core counts for each CPU */
 624         perf_cpu_map__for_each_cpu(cpu, idx, evsel->core.cpus) {
 625                 struct perf_stat_aggr *aggr = &ps->aggr[idx];
 626
 627                 id = aggr_cpu_id__core(cpu, NULL);
 628                 if (!aggr_cpu_id__equal(core_id, &id))
 629                         continue;
 630
 631                 aggr->counts.val = counts.val;
 632                 aggr->counts.ena = counts.ena;
 633                 aggr->counts.run = counts.run;
 634
 635                 aggr->used = true;
 636         }
 637 }
 638
 639 /* we have an aggr_map for cpu, but want to aggregate the counters per-core */
 640 static void evsel__process_percore(struct evsel *evsel)
 641 {
 642         struct perf_stat_evsel *ps = evsel->stats;
 643         struct aggr_cpu_id core_id;
 644         struct perf_cpu cpu;
 645         int idx;
 646
 647         if (!evsel->percore)
 648                 return;
 649
 650         perf_cpu_map__for_each_cpu(cpu, idx, evsel->core.cpus) {
 651                 struct perf_stat_aggr *aggr = &ps->aggr[idx];
 652
 653                 if (aggr->used)
 654                         continue;
 655
 656                 core_id = aggr_cpu_id__core(cpu, NULL);
 657                 evsel__update_percore_stats(evsel, &core_id);
 658         }
 659 }
 660
 661 /* process cpu stats on per-core events */
 662 void perf_stat_process_percore(struct perf_stat_config *config, struct evlist *evlist)
 663 {
 664         struct evsel *evsel;
 665
 666         if (config->aggr_mode != AGGR_NONE)
 667                 return;
 668
 669         evlist__for_each_entry(evlist, evsel)
 670                 evsel__process_percore(evsel);
 671 }
 672
 673 int perf_event__process_stat_event(struct perf_session *session,
 674                                    union perf_event *event)
 675 {
 676         struct perf_counts_values count, *ptr;
 677         struct perf_record_stat *st = &event->stat;
 678         struct evsel *counter;
 679         int cpu_map_idx;
 680
 681         count.val = st->val;
 682         count.ena = st->ena;
 683         count.run = st->run;
 684
 685         counter = evlist__id2evsel(session->evlist, st->id);
 686         if (!counter) {
 687                 pr_err("Failed to resolve counter for stat event.\n");
 688                 return -EINVAL;
 689         }
 690         cpu_map_idx = perf_cpu_map__idx(evsel__cpus(counter), (struct perf_cpu){.cpu = st->cpu});
 691         if (cpu_map_idx == -1) {
 692                 pr_err("Invalid CPU %d for event %s.\n", st->cpu, evsel__name(counter));
 693                 return -EINVAL;
 694         }
 695         ptr = perf_counts(counter->counts, cpu_map_idx, st->thread);
 696         if (ptr == NULL) {
 697                 pr_err("Failed to find perf count for CPU %d thread %d on event %s.\n",
 698                         st->cpu, st->thread, evsel__name(counter));
 699                 return -EINVAL;
 700         }
 701         *ptr = count;
 702         counter->supported = true;
 703         return 0;
 704 }
 705
 706 size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp)
 707 {
 708         struct perf_record_stat *st = (struct perf_record_stat *)event;
 709         size_t ret;
 710
 711         ret  = fprintf(fp, "\n... id %" PRI_lu64 ", cpu %d, thread %d\n",
 712                        st->id, st->cpu, st->thread);
 713         ret += fprintf(fp, "... value %" PRI_lu64 ", enabled %" PRI_lu64 ", running %" PRI_lu64 "\n",
 714                        st->val, st->ena, st->run);
 715
 716         return ret;
 717 }
 718
 719 size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp)
 720 {
 721         struct perf_record_stat_round *rd = (struct perf_record_stat_round *)event;
 722         size_t ret;
 723
 724         ret = fprintf(fp, "\n... time %" PRI_lu64 ", type %s\n", rd->time,
 725                       rd->type == PERF_STAT_ROUND_TYPE__FINAL ? "FINAL" : "INTERVAL");
 726
 727         return ret;
 728 }
 729
 730 size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp)
 731 {
 732         struct perf_stat_config sc = {};
 733         size_t ret;
 734
 735         perf_event__read_stat_config(&sc, &event->stat_config);
 736
 737         ret  = fprintf(fp, "\n");
 738         ret += fprintf(fp, "... aggr_mode %d\n", sc.aggr_mode);
 739         ret += fprintf(fp, "... scale     %d\n", sc.scale);
 740         ret += fprintf(fp, "... interval  %u\n", sc.interval);
 741
 742         return ret;
 743 }
 744
 745 int create_perf_stat_counter(struct evsel *evsel,
 746                              struct perf_stat_config *config,
 747                              struct target *target,
 748                              int cpu_map_idx)
 749 {
 750         struct perf_event_attr *attr = &evsel->core.attr;
 751         struct evsel *leader = evsel__leader(evsel);
 752
 753         attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
 754                             PERF_FORMAT_TOTAL_TIME_RUNNING;
 755
 756         /*
 757          * The event is part of non trivial group, let's enable
 758          * the group read (for leader) and ID retrieval for all
 759          * members.
 760          */
 761         if (leader->core.nr_members > 1)
 762                 attr->read_format |= PERF_FORMAT_ID|PERF_FORMAT_GROUP;
 763
 764         attr->inherit = !config->no_inherit && list_empty(&evsel->bpf_counter_list);
 765
 766         /*
 767          * Some events get initialized with sample_(period/type) set,
 768          * like tracepoints. Clear it up for counting.
 769          */
 770         attr->sample_period = 0;
 771
 772         if (config->identifier)
 773                 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
 774
 775         if (config->all_user) {
 776                 attr->exclude_kernel = 1;
 777                 attr->exclude_user   = 0;
 778         }
 779
 780         if (config->all_kernel) {
 781                 attr->exclude_kernel = 0;
 782                 attr->exclude_user   = 1;
 783         }
 784
 785         /*
 786          * Disabling all counters initially, they will be enabled
 787          * either manually by us or by kernel via enable_on_exec
 788          * set later.
 789          */
 790         if (evsel__is_group_leader(evsel)) {
 791                 attr->disabled = 1;
 792
 793                 if (target__enable_on_exec(target))
 794                         attr->enable_on_exec = 1;
 795         }
 796
 797         if (target__has_cpu(target) && !target__has_per_thread(target))
 798                 return evsel__open_per_cpu(evsel, evsel__cpus(evsel), cpu_map_idx);
 799
 800         return evsel__open_per_thread(evsel, evsel->core.threads);
 801 }