tools/perf/builtin-stat.c

   1 /*
   2  * builtin-stat.c
   3  *
   4  * Builtin stat command: Give a precise performance counters summary
   5  * overview about any workload, CPU or specific PID.
   6  *
   7  * Sample output:
   8
   9    $ perf stat ./hackbench 10
  10
  11   Time: 0.118
  12
  13   Performance counter stats for './hackbench 10':
  14
  15        1708.761321 task-clock                #   11.037 CPUs utilized
  16             41,190 context-switches          #    0.024 M/sec
  17              6,735 CPU-migrations            #    0.004 M/sec
  18             17,318 page-faults               #    0.010 M/sec
  19      5,205,202,243 cycles                    #    3.046 GHz
  20      3,856,436,920 stalled-cycles-frontend   #   74.09% frontend cycles idle
  21      1,600,790,871 stalled-cycles-backend    #   30.75% backend  cycles idle
  22      2,603,501,247 instructions              #    0.50  insns per cycle
  23                                              #    1.48  stalled cycles per insn
  24        484,357,498 branches                  #  283.455 M/sec
  25          6,388,934 branch-misses             #    1.32% of all branches
  26
  27         0.154822978  seconds time elapsed
  28
  29  *
  30  * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
  31  *
  32  * Improvements and fixes by:
  33  *
  34  *   Arjan van de Ven <arjan@linux.intel.com>
  35  *   Yanmin Zhang <yanmin.zhang@intel.com>
  36  *   Wu Fengguang <fengguang.wu@intel.com>
  37  *   Mike Galbraith <efault@gmx.de>
  38  *   Paul Mackerras <paulus@samba.org>
  39  *   Jaswinder Singh Rajput <jaswinder@kernel.org>
  40  *
  41  * Released under the GPL v2. (and only v2, not any later version)
  42  */
  43
  44 #include "perf.h"
  45 #include "builtin.h"
  46 #include "util/util.h"
  47 #include "util/parse-options.h"
  48 #include "util/parse-events.h"
  49 #include "util/event.h"
  50 #include "util/evlist.h"
  51 #include "util/evsel.h"
  52 #include "util/debug.h"
  53 #include "util/color.h"
  54 #include "util/stat.h"
  55 #include "util/header.h"
  56 #include "util/cpumap.h"
  57 #include "util/thread.h"
  58 #include "util/thread_map.h"
  59
  60 #include <stdlib.h>
  61 #include <sys/prctl.h>
  62 #include <locale.h>
  63
  64 #define DEFAULT_SEPARATOR       " "
  65 #define CNTR_NOT_SUPPORTED      "<not supported>"
  66 #define CNTR_NOT_COUNTED        "<not counted>"
  67
  68 static void print_stat(int argc, const char **argv);
  69 static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
  70 static void print_counter(struct perf_evsel *counter, char *prefix);
  71 static void print_aggr(char *prefix);
  72
  73 static struct perf_evlist       *evsel_list;
  74
  75 static struct perf_target       target = {
  76         .uid    = UINT_MAX,
  77 };
  78
  79 enum aggr_mode {
  80         AGGR_NONE,
  81         AGGR_GLOBAL,
  82         AGGR_SOCKET,
  83         AGGR_CORE,
  84 };
  85
  86 static int                      run_count                       =  1;
  87 static bool                     no_inherit                      = false;
  88 static bool                     scale                           =  true;
  89 static enum aggr_mode           aggr_mode                       = AGGR_GLOBAL;
  90 static volatile pid_t           child_pid                       = -1;
  91 static bool                     null_run                        =  false;
  92 static int                      detailed_run                    =  0;
  93 static bool                     big_num                         =  true;
  94 static int                      big_num_opt                     =  -1;
  95 static const char               *csv_sep                        = NULL;
  96 static bool                     csv_output                      = false;
  97 static bool                     group                           = false;
  98 static FILE                     *output                         = NULL;
  99 static const char               *pre_cmd                        = NULL;
 100 static const char               *post_cmd                       = NULL;
 101 static bool                     sync_run                        = false;
 102 static unsigned int             interval                        = 0;
 103 static unsigned int             initial_delay                   = 0;
 104 static bool                     forever                         = false;
 105 static struct timespec          ref_time;
 106 static struct cpu_map           *aggr_map;
 107 static int                      (*aggr_get_id)(struct cpu_map *m, int cpu);
 108
 109 static volatile int done = 0;
 110
 111 struct perf_stat {
 112         struct stats      res_stats[3];
 113 };
 114
 115 static inline void diff_timespec(struct timespec *r, struct timespec *a,
 116                                  struct timespec *b)
 117 {
 118         r->tv_sec = a->tv_sec - b->tv_sec;
 119         if (a->tv_nsec < b->tv_nsec) {
 120                 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
 121                 r->tv_sec--;
 122         } else {
 123                 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
 124         }
 125 }
 126
 127 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
 128 {
 129         return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
 130 }
 131
 132 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
 133 {
 134         return perf_evsel__cpus(evsel)->nr;
 135 }
 136
 137 static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
 138 {
 139         memset(evsel->priv, 0, sizeof(struct perf_stat));
 140 }
 141
 142 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
 143 {
 144         evsel->priv = zalloc(sizeof(struct perf_stat));
 145         return evsel->priv == NULL ? -ENOMEM : 0;
 146 }
 147
 148 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
 149 {
 150         free(evsel->priv);
 151         evsel->priv = NULL;
 152 }
 153
 154 static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
 155 {
 156         void *addr;
 157         size_t sz;
 158
 159         sz = sizeof(*evsel->counts) +
 160              (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
 161
 162         addr = zalloc(sz);
 163         if (!addr)
 164                 return -ENOMEM;
 165
 166         evsel->prev_raw_counts =  addr;
 167
 168         return 0;
 169 }
 170
 171 static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
 172 {
 173         free(evsel->prev_raw_counts);
 174         evsel->prev_raw_counts = NULL;
 175 }
 176
 177 static void perf_evlist__free_stats(struct perf_evlist *evlist)
 178 {
 179         struct perf_evsel *evsel;
 180
 181         list_for_each_entry(evsel, &evlist->entries, node) {
 182                 perf_evsel__free_stat_priv(evsel);
 183                 perf_evsel__free_counts(evsel);
 184                 perf_evsel__free_prev_raw_counts(evsel);
 185         }
 186 }
 187
 188 static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
 189 {
 190         struct perf_evsel *evsel;
 191
 192         list_for_each_entry(evsel, &evlist->entries, node) {
 193                 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
 194                     perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
 195                     (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
 196                         goto out_free;
 197         }
 198
 199         return 0;
 200
 201 out_free:
 202         perf_evlist__free_stats(evlist);
 203         return -1;
 204 }
 205
 206 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
 207 static struct stats runtime_cycles_stats[MAX_NR_CPUS];
 208 static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
 209 static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
 210 static struct stats runtime_branches_stats[MAX_NR_CPUS];
 211 static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
 212 static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
 213 static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
 214 static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
 215 static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
 216 static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
 217 static struct stats walltime_nsecs_stats;
 218
 219 static void perf_stat__reset_stats(struct perf_evlist *evlist)
 220 {
 221         struct perf_evsel *evsel;
 222
 223         list_for_each_entry(evsel, &evlist->entries, node) {
 224                 perf_evsel__reset_stat_priv(evsel);
 225                 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
 226         }
 227
 228         memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
 229         memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
 230         memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
 231         memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
 232         memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
 233         memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
 234         memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
 235         memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
 236         memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
 237         memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
 238         memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
 239         memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
 240 }
 241
 242 static int create_perf_stat_counter(struct perf_evsel *evsel)
 243 {
 244         struct perf_event_attr *attr = &evsel->attr;
 245
 246         if (scale)
 247                 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
 248                                     PERF_FORMAT_TOTAL_TIME_RUNNING;
 249
 250         attr->inherit = !no_inherit;
 251
 252         if (perf_target__has_cpu(&target))
 253                 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
 254
 255         if (!perf_target__has_task(&target) &&
 256             perf_evsel__is_group_leader(evsel)) {
 257                 attr->disabled = 1;
 258                 if (!initial_delay)
 259                         attr->enable_on_exec = 1;
 260         }
 261
 262         return perf_evsel__open_per_thread(evsel, evsel_list->threads);
 263 }
 264
 265 /*
 266  * Does the counter have nsecs as a unit?
 267  */
 268 static inline int nsec_counter(struct perf_evsel *evsel)
 269 {
 270         if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
 271             perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
 272                 return 1;
 273
 274         return 0;
 275 }
 276
 277 /*
 278  * Update various tracking values we maintain to print
 279  * more semantic information such as miss/hit ratios,
 280  * instruction rates, etc:
 281  */
 282 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
 283 {
 284         if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
 285                 update_stats(&runtime_nsecs_stats[0], count[0]);
 286         else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
 287                 update_stats(&runtime_cycles_stats[0], count[0]);
 288         else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
 289                 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
 290         else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
 291                 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
 292         else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
 293                 update_stats(&runtime_branches_stats[0], count[0]);
 294         else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
 295                 update_stats(&runtime_cacherefs_stats[0], count[0]);
 296         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
 297                 update_stats(&runtime_l1_dcache_stats[0], count[0]);
 298         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
 299                 update_stats(&runtime_l1_icache_stats[0], count[0]);
 300         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
 301                 update_stats(&runtime_ll_cache_stats[0], count[0]);
 302         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
 303                 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
 304         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
 305                 update_stats(&runtime_itlb_cache_stats[0], count[0]);
 306 }
 307
 308 /*
 309  * Read out the results of a single counter:
 310  * aggregate counts across CPUs in system-wide mode
 311  */
 312 static int read_counter_aggr(struct perf_evsel *counter)
 313 {
 314         struct perf_stat *ps = counter->priv;
 315         u64 *count = counter->counts->aggr.values;
 316         int i;
 317
 318         if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
 319                                thread_map__nr(evsel_list->threads), scale) < 0)
 320                 return -1;
 321
 322         for (i = 0; i < 3; i++)
 323                 update_stats(&ps->res_stats[i], count[i]);
 324
 325         if (verbose) {
 326                 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
 327                         perf_evsel__name(counter), count[0], count[1], count[2]);
 328         }
 329
 330         /*
 331          * Save the full runtime - to allow normalization during printout:
 332          */
 333         update_shadow_stats(counter, count);
 334
 335         return 0;
 336 }
 337
 338 /*
 339  * Read out the results of a single counter:
 340  * do not aggregate counts across CPUs in system-wide mode
 341  */
 342 static int read_counter(struct perf_evsel *counter)
 343 {
 344         u64 *count;
 345         int cpu;
 346
 347         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
 348                 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
 349                         return -1;
 350
 351                 count = counter->counts->cpu[cpu].values;
 352
 353                 update_shadow_stats(counter, count);
 354         }
 355
 356         return 0;
 357 }
 358
 359 static void print_interval(void)
 360 {
 361         static int num_print_interval;
 362         struct perf_evsel *counter;
 363         struct perf_stat *ps;
 364         struct timespec ts, rs;
 365         char prefix[64];
 366
 367         if (aggr_mode == AGGR_GLOBAL) {
 368                 list_for_each_entry(counter, &evsel_list->entries, node) {
 369                         ps = counter->priv;
 370                         memset(ps->res_stats, 0, sizeof(ps->res_stats));
 371                         read_counter_aggr(counter);
 372                 }
 373         } else  {
 374                 list_for_each_entry(counter, &evsel_list->entries, node) {
 375                         ps = counter->priv;
 376                         memset(ps->res_stats, 0, sizeof(ps->res_stats));
 377                         read_counter(counter);
 378                 }
 379         }
 380
 381         clock_gettime(CLOCK_MONOTONIC, &ts);
 382         diff_timespec(&rs, &ts, &ref_time);
 383         sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
 384
 385         if (num_print_interval == 0 && !csv_output) {
 386                 switch (aggr_mode) {
 387                 case AGGR_SOCKET:
 388                         fprintf(output, "#           time socket cpus             counts events\n");
 389                         break;
 390                 case AGGR_CORE:
 391                         fprintf(output, "#           time core         cpus             counts events\n");
 392                         break;
 393                 case AGGR_NONE:
 394                         fprintf(output, "#           time CPU                 counts events\n");
 395                         break;
 396                 case AGGR_GLOBAL:
 397                 default:
 398                         fprintf(output, "#           time             counts events\n");
 399                 }
 400         }
 401
 402         if (++num_print_interval == 25)
 403                 num_print_interval = 0;
 404
 405         switch (aggr_mode) {
 406         case AGGR_CORE:
 407         case AGGR_SOCKET:
 408                 print_aggr(prefix);
 409                 break;
 410         case AGGR_NONE:
 411                 list_for_each_entry(counter, &evsel_list->entries, node)
 412                         print_counter(counter, prefix);
 413                 break;
 414         case AGGR_GLOBAL:
 415         default:
 416                 list_for_each_entry(counter, &evsel_list->entries, node)
 417                         print_counter_aggr(counter, prefix);
 418         }
 419
 420         fflush(output);
 421 }
 422
 423 static void handle_initial_delay(void)
 424 {
 425         struct perf_evsel *counter;
 426
 427         if (initial_delay) {
 428                 const int ncpus = cpu_map__nr(evsel_list->cpus),
 429                         nthreads = thread_map__nr(evsel_list->threads);
 430
 431                 usleep(initial_delay * 1000);
 432                 list_for_each_entry(counter, &evsel_list->entries, node)
 433                         perf_evsel__enable(counter, ncpus, nthreads);
 434         }
 435 }
 436
 437 static int __run_perf_stat(int argc, const char **argv)
 438 {
 439         char msg[512];
 440         unsigned long long t0, t1;
 441         struct perf_evsel *counter;
 442         struct timespec ts;
 443         int status = 0;
 444         const bool forks = (argc > 0);
 445
 446         if (interval) {
 447                 ts.tv_sec  = interval / 1000;
 448                 ts.tv_nsec = (interval % 1000) * 1000000;
 449         } else {
 450                 ts.tv_sec  = 1;
 451                 ts.tv_nsec = 0;
 452         }
 453
 454         if (forks) {
 455                 if (perf_evlist__prepare_workload(evsel_list, &target, argv,
 456                                                   false, false) < 0) {
 457                         perror("failed to prepare workload");
 458                         return -1;
 459                 }
 460         }
 461
 462         if (group)
 463                 perf_evlist__set_leader(evsel_list);
 464
 465         list_for_each_entry(counter, &evsel_list->entries, node) {
 466                 if (create_perf_stat_counter(counter) < 0) {
 467                         /*
 468                          * PPC returns ENXIO for HW counters until 2.6.37
 469                          * (behavior changed with commit b0a873e).
 470                          */
 471                         if (errno == EINVAL || errno == ENOSYS ||
 472                             errno == ENOENT || errno == EOPNOTSUPP ||
 473                             errno == ENXIO) {
 474                                 if (verbose)
 475                                         ui__warning("%s event is not supported by the kernel.\n",
 476                                                     perf_evsel__name(counter));
 477                                 counter->supported = false;
 478                                 continue;
 479                         }
 480
 481                         perf_evsel__open_strerror(counter, &target,
 482                                                   errno, msg, sizeof(msg));
 483                         ui__error("%s\n", msg);
 484
 485                         if (child_pid != -1)
 486                                 kill(child_pid, SIGTERM);
 487
 488                         return -1;
 489                 }
 490                 counter->supported = true;
 491         }
 492
 493         if (perf_evlist__apply_filters(evsel_list)) {
 494                 error("failed to set filter with %d (%s)\n", errno,
 495                         strerror(errno));
 496                 return -1;
 497         }
 498
 499         /*
 500          * Enable counters and exec the command:
 501          */
 502         t0 = rdclock();
 503         clock_gettime(CLOCK_MONOTONIC, &ref_time);
 504
 505         if (forks) {
 506                 perf_evlist__start_workload(evsel_list);
 507                 handle_initial_delay();
 508
 509                 if (interval) {
 510                         while (!waitpid(child_pid, &status, WNOHANG)) {
 511                                 nanosleep(&ts, NULL);
 512                                 print_interval();
 513                         }
 514                 }
 515                 wait(&status);
 516                 if (WIFSIGNALED(status))
 517                         psignal(WTERMSIG(status), argv[0]);
 518         } else {
 519                 handle_initial_delay();
 520                 while (!done) {
 521                         nanosleep(&ts, NULL);
 522                         if (interval)
 523                                 print_interval();
 524                 }
 525         }
 526
 527         t1 = rdclock();
 528
 529         update_stats(&walltime_nsecs_stats, t1 - t0);
 530
 531         if (aggr_mode == AGGR_GLOBAL) {
 532                 list_for_each_entry(counter, &evsel_list->entries, node) {
 533                         read_counter_aggr(counter);
 534                         perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
 535                                              thread_map__nr(evsel_list->threads));
 536                 }
 537         } else {
 538                 list_for_each_entry(counter, &evsel_list->entries, node) {
 539                         read_counter(counter);
 540                         perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
 541                 }
 542         }
 543
 544         return WEXITSTATUS(status);
 545 }
 546
 547 static int run_perf_stat(int argc __maybe_unused, const char **argv)
 548 {
 549         int ret;
 550
 551         if (pre_cmd) {
 552                 ret = system(pre_cmd);
 553                 if (ret)
 554                         return ret;
 555         }
 556
 557         if (sync_run)
 558                 sync();
 559
 560         ret = __run_perf_stat(argc, argv);
 561         if (ret)
 562                 return ret;
 563
 564         if (post_cmd) {
 565                 ret = system(post_cmd);
 566                 if (ret)
 567                         return ret;
 568         }
 569
 570         return ret;
 571 }
 572
 573 static void print_noise_pct(double total, double avg)
 574 {
 575         double pct = rel_stddev_stats(total, avg);
 576
 577         if (csv_output)
 578                 fprintf(output, "%s%.2f%%", csv_sep, pct);
 579         else if (pct)
 580                 fprintf(output, "  ( +-%6.2f%% )", pct);
 581 }
 582
 583 static void print_noise(struct perf_evsel *evsel, double avg)
 584 {
 585         struct perf_stat *ps;
 586
 587         if (run_count == 1)
 588                 return;
 589
 590         ps = evsel->priv;
 591         print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
 592 }
 593
 594 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
 595 {
 596         switch (aggr_mode) {
 597         case AGGR_CORE:
 598                 fprintf(output, "S%d-C%*d%s%*d%s",
 599                         cpu_map__id_to_socket(id),
 600                         csv_output ? 0 : -8,
 601                         cpu_map__id_to_cpu(id),
 602                         csv_sep,
 603                         csv_output ? 0 : 4,
 604                         nr,
 605                         csv_sep);
 606                 break;
 607         case AGGR_SOCKET:
 608                 fprintf(output, "S%*d%s%*d%s",
 609                         csv_output ? 0 : -5,
 610                         id,
 611                         csv_sep,
 612                         csv_output ? 0 : 4,
 613                         nr,
 614                         csv_sep);
 615                         break;
 616         case AGGR_NONE:
 617                 fprintf(output, "CPU%*d%s",
 618                         csv_output ? 0 : -4,
 619                         perf_evsel__cpus(evsel)->map[id], csv_sep);
 620                 break;
 621         case AGGR_GLOBAL:
 622         default:
 623                 break;
 624         }
 625 }
 626
 627 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 628 {
 629         double msecs = avg / 1e6;
 630         const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
 631
 632         aggr_printout(evsel, cpu, nr);
 633
 634         fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
 635
 636         if (evsel->cgrp)
 637                 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 638
 639         if (csv_output || interval)
 640                 return;
 641
 642         if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
 643                 fprintf(output, " # %8.3f CPUs utilized          ",
 644                         avg / avg_stats(&walltime_nsecs_stats));
 645         else
 646                 fprintf(output, "                                   ");
 647 }
 648
 649 /* used for get_ratio_color() */
 650 enum grc_type {
 651         GRC_STALLED_CYCLES_FE,
 652         GRC_STALLED_CYCLES_BE,
 653         GRC_CACHE_MISSES,
 654         GRC_MAX_NR
 655 };
 656
 657 static const char *get_ratio_color(enum grc_type type, double ratio)
 658 {
 659         static const double grc_table[GRC_MAX_NR][3] = {
 660                 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
 661                 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
 662                 [GRC_CACHE_MISSES]      = { 20.0, 10.0, 5.0 },
 663         };
 664         const char *color = PERF_COLOR_NORMAL;
 665
 666         if (ratio > grc_table[type][0])
 667                 color = PERF_COLOR_RED;
 668         else if (ratio > grc_table[type][1])
 669                 color = PERF_COLOR_MAGENTA;
 670         else if (ratio > grc_table[type][2])
 671                 color = PERF_COLOR_YELLOW;
 672
 673         return color;
 674 }
 675
 676 static void print_stalled_cycles_frontend(int cpu,
 677                                           struct perf_evsel *evsel
 678                                           __maybe_unused, double avg)
 679 {
 680         double total, ratio = 0.0;
 681         const char *color;
 682
 683         total = avg_stats(&runtime_cycles_stats[cpu]);
 684
 685         if (total)
 686                 ratio = avg / total * 100.0;
 687
 688         color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
 689
 690         fprintf(output, " #  ");
 691         color_fprintf(output, color, "%6.2f%%", ratio);
 692         fprintf(output, " frontend cycles idle   ");
 693 }
 694
 695 static void print_stalled_cycles_backend(int cpu,
 696                                          struct perf_evsel *evsel
 697                                          __maybe_unused, double avg)
 698 {
 699         double total, ratio = 0.0;
 700         const char *color;
 701
 702         total = avg_stats(&runtime_cycles_stats[cpu]);
 703
 704         if (total)
 705                 ratio = avg / total * 100.0;
 706
 707         color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
 708
 709         fprintf(output, " #  ");
 710         color_fprintf(output, color, "%6.2f%%", ratio);
 711         fprintf(output, " backend  cycles idle   ");
 712 }
 713
 714 static void print_branch_misses(int cpu,
 715                                 struct perf_evsel *evsel __maybe_unused,
 716                                 double avg)
 717 {
 718         double total, ratio = 0.0;
 719         const char *color;
 720
 721         total = avg_stats(&runtime_branches_stats[cpu]);
 722
 723         if (total)
 724                 ratio = avg / total * 100.0;
 725
 726         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 727
 728         fprintf(output, " #  ");
 729         color_fprintf(output, color, "%6.2f%%", ratio);
 730         fprintf(output, " of all branches        ");
 731 }
 732
 733 static void print_l1_dcache_misses(int cpu,
 734                                    struct perf_evsel *evsel __maybe_unused,
 735                                    double avg)
 736 {
 737         double total, ratio = 0.0;
 738         const char *color;
 739
 740         total = avg_stats(&runtime_l1_dcache_stats[cpu]);
 741
 742         if (total)
 743                 ratio = avg / total * 100.0;
 744
 745         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 746
 747         fprintf(output, " #  ");
 748         color_fprintf(output, color, "%6.2f%%", ratio);
 749         fprintf(output, " of all L1-dcache hits  ");
 750 }
 751
 752 static void print_l1_icache_misses(int cpu,
 753                                    struct perf_evsel *evsel __maybe_unused,
 754                                    double avg)
 755 {
 756         double total, ratio = 0.0;
 757         const char *color;
 758
 759         total = avg_stats(&runtime_l1_icache_stats[cpu]);
 760
 761         if (total)
 762                 ratio = avg / total * 100.0;
 763
 764         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 765
 766         fprintf(output, " #  ");
 767         color_fprintf(output, color, "%6.2f%%", ratio);
 768         fprintf(output, " of all L1-icache hits  ");
 769 }
 770
 771 static void print_dtlb_cache_misses(int cpu,
 772                                     struct perf_evsel *evsel __maybe_unused,
 773                                     double avg)
 774 {
 775         double total, ratio = 0.0;
 776         const char *color;
 777
 778         total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
 779
 780         if (total)
 781                 ratio = avg / total * 100.0;
 782
 783         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 784
 785         fprintf(output, " #  ");
 786         color_fprintf(output, color, "%6.2f%%", ratio);
 787         fprintf(output, " of all dTLB cache hits ");
 788 }
 789
 790 static void print_itlb_cache_misses(int cpu,
 791                                     struct perf_evsel *evsel __maybe_unused,
 792                                     double avg)
 793 {
 794         double total, ratio = 0.0;
 795         const char *color;
 796
 797         total = avg_stats(&runtime_itlb_cache_stats[cpu]);
 798
 799         if (total)
 800                 ratio = avg / total * 100.0;
 801
 802         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 803
 804         fprintf(output, " #  ");
 805         color_fprintf(output, color, "%6.2f%%", ratio);
 806         fprintf(output, " of all iTLB cache hits ");
 807 }
 808
 809 static void print_ll_cache_misses(int cpu,
 810                                   struct perf_evsel *evsel __maybe_unused,
 811                                   double avg)
 812 {
 813         double total, ratio = 0.0;
 814         const char *color;
 815
 816         total = avg_stats(&runtime_ll_cache_stats[cpu]);
 817
 818         if (total)
 819                 ratio = avg / total * 100.0;
 820
 821         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 822
 823         fprintf(output, " #  ");
 824         color_fprintf(output, color, "%6.2f%%", ratio);
 825         fprintf(output, " of all LL-cache hits   ");
 826 }
 827
 828 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 829 {
 830         double total, ratio = 0.0;
 831         const char *fmt;
 832
 833         if (csv_output)
 834                 fmt = "%.0f%s%s";
 835         else if (big_num)
 836                 fmt = "%'18.0f%s%-25s";
 837         else
 838                 fmt = "%18.0f%s%-25s";
 839
 840         aggr_printout(evsel, cpu, nr);
 841
 842         if (aggr_mode == AGGR_GLOBAL)
 843                 cpu = 0;
 844
 845         fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
 846
 847         if (evsel->cgrp)
 848                 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 849
 850         if (csv_output || interval)
 851                 return;
 852
 853         if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
 854                 total = avg_stats(&runtime_cycles_stats[cpu]);
 855                 if (total)
 856                         ratio = avg / total;
 857
 858                 fprintf(output, " #   %5.2f  insns per cycle        ", ratio);
 859
 860                 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
 861                 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
 862
 863                 if (total && avg) {
 864                         ratio = total / avg;
 865                         fprintf(output, "\n                                             #   %5.2f  stalled cycles per insn", ratio);
 866                 }
 867
 868         } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
 869                         runtime_branches_stats[cpu].n != 0) {
 870                 print_branch_misses(cpu, evsel, avg);
 871         } else if (
 872                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 873                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1D |
 874                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 875                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 876                         runtime_l1_dcache_stats[cpu].n != 0) {
 877                 print_l1_dcache_misses(cpu, evsel, avg);
 878         } else if (
 879                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 880                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1I |
 881                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 882                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 883                         runtime_l1_icache_stats[cpu].n != 0) {
 884                 print_l1_icache_misses(cpu, evsel, avg);
 885         } else if (
 886                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 887                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_DTLB |
 888                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 889                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 890                         runtime_dtlb_cache_stats[cpu].n != 0) {
 891                 print_dtlb_cache_misses(cpu, evsel, avg);
 892         } else if (
 893                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 894                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_ITLB |
 895                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 896                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 897                         runtime_itlb_cache_stats[cpu].n != 0) {
 898                 print_itlb_cache_misses(cpu, evsel, avg);
 899         } else if (
 900                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 901                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_LL |
 902                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 903                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 904                         runtime_ll_cache_stats[cpu].n != 0) {
 905                 print_ll_cache_misses(cpu, evsel, avg);
 906         } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
 907                         runtime_cacherefs_stats[cpu].n != 0) {
 908                 total = avg_stats(&runtime_cacherefs_stats[cpu]);
 909
 910                 if (total)
 911                         ratio = avg * 100 / total;
 912
 913                 fprintf(output, " # %8.3f %% of all cache refs    ", ratio);
 914
 915         } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
 916                 print_stalled_cycles_frontend(cpu, evsel, avg);
 917         } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
 918                 print_stalled_cycles_backend(cpu, evsel, avg);
 919         } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
 920                 total = avg_stats(&runtime_nsecs_stats[cpu]);
 921
 922                 if (total)
 923                         ratio = 1.0 * avg / total;
 924
 925                 fprintf(output, " # %8.3f GHz                    ", ratio);
 926         } else if (runtime_nsecs_stats[cpu].n != 0) {
 927                 char unit = 'M';
 928
 929                 total = avg_stats(&runtime_nsecs_stats[cpu]);
 930
 931                 if (total)
 932                         ratio = 1000.0 * avg / total;
 933                 if (ratio < 0.001) {
 934                         ratio *= 1000;
 935                         unit = 'K';
 936                 }
 937
 938                 fprintf(output, " # %8.3f %c/sec                  ", ratio, unit);
 939         } else {
 940                 fprintf(output, "                                   ");
 941         }
 942 }
 943
 944 static void print_aggr(char *prefix)
 945 {
 946         struct perf_evsel *counter;
 947         int cpu, cpu2, s, s2, id, nr;
 948         u64 ena, run, val;
 949
 950         if (!(aggr_map || aggr_get_id))
 951                 return;
 952
 953         for (s = 0; s < aggr_map->nr; s++) {
 954                 id = aggr_map->map[s];
 955                 list_for_each_entry(counter, &evsel_list->entries, node) {
 956                         val = ena = run = 0;
 957                         nr = 0;
 958                         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
 959                                 cpu2 = perf_evsel__cpus(counter)->map[cpu];
 960                                 s2 = aggr_get_id(evsel_list->cpus, cpu2);
 961                                 if (s2 != id)
 962                                         continue;
 963                                 val += counter->counts->cpu[cpu].val;
 964                                 ena += counter->counts->cpu[cpu].ena;
 965                                 run += counter->counts->cpu[cpu].run;
 966                                 nr++;
 967                         }
 968                         if (prefix)
 969                                 fprintf(output, "%s", prefix);
 970
 971                         if (run == 0 || ena == 0) {
 972                                 aggr_printout(counter, id, nr);
 973
 974                                 fprintf(output, "%*s%s%*s",
 975                                         csv_output ? 0 : 18,
 976                                         counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
 977                                         csv_sep,
 978                                         csv_output ? 0 : -24,
 979                                         perf_evsel__name(counter));
 980
 981                                 if (counter->cgrp)
 982                                         fprintf(output, "%s%s",
 983                                                 csv_sep, counter->cgrp->name);
 984
 985                                 fputc('\n', output);
 986                                 continue;
 987                         }
 988
 989                         if (nsec_counter(counter))
 990                                 nsec_printout(id, nr, counter, val);
 991                         else
 992                                 abs_printout(id, nr, counter, val);
 993
 994                         if (!csv_output) {
 995                                 print_noise(counter, 1.0);
 996
 997                                 if (run != ena)
 998                                         fprintf(output, "  (%.2f%%)",
 999                                                 100.0 * run / ena);
1000                         }
1001                         fputc('\n', output);
1002                 }
1003         }
1004 }
1005
1006 /*
1007  * Print out the results of a single counter:
1008  * aggregated counts in system-wide mode
1009  */
1010 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1011 {
1012         struct perf_stat *ps = counter->priv;
1013         double avg = avg_stats(&ps->res_stats[0]);
1014         int scaled = counter->counts->scaled;
1015
1016         if (prefix)
1017                 fprintf(output, "%s", prefix);
1018
1019         if (scaled == -1) {
1020                 fprintf(output, "%*s%s%*s",
1021                         csv_output ? 0 : 18,
1022                         counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1023                         csv_sep,
1024                         csv_output ? 0 : -24,
1025                         perf_evsel__name(counter));
1026
1027                 if (counter->cgrp)
1028                         fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1029
1030                 fputc('\n', output);
1031                 return;
1032         }
1033
1034         if (nsec_counter(counter))
1035                 nsec_printout(-1, 0, counter, avg);
1036         else
1037                 abs_printout(-1, 0, counter, avg);
1038
1039         print_noise(counter, avg);
1040
1041         if (csv_output) {
1042                 fputc('\n', output);
1043                 return;
1044         }
1045
1046         if (scaled) {
1047                 double avg_enabled, avg_running;
1048
1049                 avg_enabled = avg_stats(&ps->res_stats[1]);
1050                 avg_running = avg_stats(&ps->res_stats[2]);
1051
1052                 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1053         }
1054         fprintf(output, "\n");
1055 }
1056
1057 /*
1058  * Print out the results of a single counter:
1059  * does not use aggregated count in system-wide
1060  */
1061 static void print_counter(struct perf_evsel *counter, char *prefix)
1062 {
1063         u64 ena, run, val;
1064         int cpu;
1065
1066         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1067                 val = counter->counts->cpu[cpu].val;
1068                 ena = counter->counts->cpu[cpu].ena;
1069                 run = counter->counts->cpu[cpu].run;
1070
1071                 if (prefix)
1072                         fprintf(output, "%s", prefix);
1073
1074                 if (run == 0 || ena == 0) {
1075                         fprintf(output, "CPU%*d%s%*s%s%*s",
1076                                 csv_output ? 0 : -4,
1077                                 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1078                                 csv_output ? 0 : 18,
1079                                 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1080                                 csv_sep,
1081                                 csv_output ? 0 : -24,
1082                                 perf_evsel__name(counter));
1083
1084                         if (counter->cgrp)
1085                                 fprintf(output, "%s%s",
1086                                         csv_sep, counter->cgrp->name);
1087
1088                         fputc('\n', output);
1089                         continue;
1090                 }
1091
1092                 if (nsec_counter(counter))
1093                         nsec_printout(cpu, 0, counter, val);
1094                 else
1095                         abs_printout(cpu, 0, counter, val);
1096
1097                 if (!csv_output) {
1098                         print_noise(counter, 1.0);
1099
1100                         if (run != ena)
1101                                 fprintf(output, "  (%.2f%%)",
1102                                         100.0 * run / ena);
1103                 }
1104                 fputc('\n', output);
1105         }
1106 }
1107
1108 static void print_stat(int argc, const char **argv)
1109 {
1110         struct perf_evsel *counter;
1111         int i;
1112
1113         fflush(stdout);
1114
1115         if (!csv_output) {
1116                 fprintf(output, "\n");
1117                 fprintf(output, " Performance counter stats for ");
1118                 if (!perf_target__has_task(&target)) {
1119                         fprintf(output, "\'%s", argv[0]);
1120                         for (i = 1; i < argc; i++)
1121                                 fprintf(output, " %s", argv[i]);
1122                 } else if (target.pid)
1123                         fprintf(output, "process id \'%s", target.pid);
1124                 else
1125                         fprintf(output, "thread id \'%s", target.tid);
1126
1127                 fprintf(output, "\'");
1128                 if (run_count > 1)
1129                         fprintf(output, " (%d runs)", run_count);
1130                 fprintf(output, ":\n\n");
1131         }
1132
1133         switch (aggr_mode) {
1134         case AGGR_CORE:
1135         case AGGR_SOCKET:
1136                 print_aggr(NULL);
1137                 break;
1138         case AGGR_GLOBAL:
1139                 list_for_each_entry(counter, &evsel_list->entries, node)
1140                         print_counter_aggr(counter, NULL);
1141                 break;
1142         case AGGR_NONE:
1143                 list_for_each_entry(counter, &evsel_list->entries, node)
1144                         print_counter(counter, NULL);
1145                 break;
1146         default:
1147                 break;
1148         }
1149
1150         if (!csv_output) {
1151                 if (!null_run)
1152                         fprintf(output, "\n");
1153                 fprintf(output, " %17.9f seconds time elapsed",
1154                                 avg_stats(&walltime_nsecs_stats)/1e9);
1155                 if (run_count > 1) {
1156                         fprintf(output, "                                        ");
1157                         print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1158                                         avg_stats(&walltime_nsecs_stats));
1159                 }
1160                 fprintf(output, "\n\n");
1161         }
1162 }
1163
1164 static volatile int signr = -1;
1165
1166 static void skip_signal(int signo)
1167 {
1168         if ((child_pid == -1) || interval)
1169                 done = 1;
1170
1171         signr = signo;
1172         /*
1173          * render child_pid harmless
1174          * won't send SIGTERM to a random
1175          * process in case of race condition
1176          * and fast PID recycling
1177          */
1178         child_pid = -1;
1179 }
1180
1181 static void sig_atexit(void)
1182 {
1183         sigset_t set, oset;
1184
1185         /*
1186          * avoid race condition with SIGCHLD handler
1187          * in skip_signal() which is modifying child_pid
1188          * goal is to avoid send SIGTERM to a random
1189          * process
1190          */
1191         sigemptyset(&set);
1192         sigaddset(&set, SIGCHLD);
1193         sigprocmask(SIG_BLOCK, &set, &oset);
1194
1195         if (child_pid != -1)
1196                 kill(child_pid, SIGTERM);
1197
1198         sigprocmask(SIG_SETMASK, &oset, NULL);
1199
1200         if (signr == -1)
1201                 return;
1202
1203         signal(signr, SIG_DFL);
1204         kill(getpid(), signr);
1205 }
1206
1207 static int stat__set_big_num(const struct option *opt __maybe_unused,
1208                              const char *s __maybe_unused, int unset)
1209 {
1210         big_num_opt = unset ? 0 : 1;
1211         return 0;
1212 }
1213
1214 static int perf_stat_init_aggr_mode(void)
1215 {
1216         switch (aggr_mode) {
1217         case AGGR_SOCKET:
1218                 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1219                         perror("cannot build socket map");
1220                         return -1;
1221                 }
1222                 aggr_get_id = cpu_map__get_socket;
1223                 break;
1224         case AGGR_CORE:
1225                 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1226                         perror("cannot build core map");
1227                         return -1;
1228                 }
1229                 aggr_get_id = cpu_map__get_core;
1230                 break;
1231         case AGGR_NONE:
1232         case AGGR_GLOBAL:
1233         default:
1234                 break;
1235         }
1236         return 0;
1237 }
1238
1239
1240 /*
1241  * Add default attributes, if there were no attributes specified or
1242  * if -d/--detailed, -d -d or -d -d -d is used:
1243  */
1244 static int add_default_attributes(void)
1245 {
1246         struct perf_event_attr default_attrs[] = {
1247
1248   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK              },
1249   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES        },
1250   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS          },
1251   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS             },
1252
1253   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES              },
1254   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1255   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND  },
1256   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS            },
1257   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS     },
1258   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES           },
1259
1260 };
1261
1262 /*
1263  * Detailed stats (-d), covering the L1 and last level data caches:
1264  */
1265         struct perf_event_attr detailed_attrs[] = {
1266
1267   { .type = PERF_TYPE_HW_CACHE,
1268     .config =
1269          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1270         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1271         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1272
1273   { .type = PERF_TYPE_HW_CACHE,
1274     .config =
1275          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1276         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1277         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1278
1279   { .type = PERF_TYPE_HW_CACHE,
1280     .config =
1281          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1282         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1283         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1284
1285   { .type = PERF_TYPE_HW_CACHE,
1286     .config =
1287          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1288         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1289         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1290 };
1291
1292 /*
1293  * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1294  */
1295         struct perf_event_attr very_detailed_attrs[] = {
1296
1297   { .type = PERF_TYPE_HW_CACHE,
1298     .config =
1299          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1300         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1301         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1302
1303   { .type = PERF_TYPE_HW_CACHE,
1304     .config =
1305          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1306         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1307         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1308
1309   { .type = PERF_TYPE_HW_CACHE,
1310     .config =
1311          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1312         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1313         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1314
1315   { .type = PERF_TYPE_HW_CACHE,
1316     .config =
1317          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1318         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1319         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1320
1321   { .type = PERF_TYPE_HW_CACHE,
1322     .config =
1323          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1324         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1325         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1326
1327   { .type = PERF_TYPE_HW_CACHE,
1328     .config =
1329          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1330         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1331         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1332
1333 };
1334
1335 /*
1336  * Very, very detailed stats (-d -d -d), adding prefetch events:
1337  */
1338         struct perf_event_attr very_very_detailed_attrs[] = {
1339
1340   { .type = PERF_TYPE_HW_CACHE,
1341     .config =
1342          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1343         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1344         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1345
1346   { .type = PERF_TYPE_HW_CACHE,
1347     .config =
1348          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1349         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1350         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1351 };
1352
1353         /* Set attrs if no event is selected and !null_run: */
1354         if (null_run)
1355                 return 0;
1356
1357         if (!evsel_list->nr_entries) {
1358                 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1359                         return -1;
1360         }
1361
1362         /* Detailed events get appended to the event list: */
1363
1364         if (detailed_run <  1)
1365                 return 0;
1366
1367         /* Append detailed run extra attributes: */
1368         if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1369                 return -1;
1370
1371         if (detailed_run < 2)
1372                 return 0;
1373
1374         /* Append very detailed run extra attributes: */
1375         if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1376                 return -1;
1377
1378         if (detailed_run < 3)
1379                 return 0;
1380
1381         /* Append very, very detailed run extra attributes: */
1382         return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1383 }
1384
1385 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1386 {
1387         bool append_file = false;
1388         int output_fd = 0;
1389         const char *output_name = NULL;
1390         const struct option options[] = {
1391         OPT_CALLBACK('e', "event", &evsel_list, "event",
1392                      "event selector. use 'perf list' to list available events",
1393                      parse_events_option),
1394         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1395                      "event filter", parse_filter),
1396         OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1397                     "child tasks do not inherit counters"),
1398         OPT_STRING('p', "pid", &target.pid, "pid",
1399                    "stat events on existing process id"),
1400         OPT_STRING('t', "tid", &target.tid, "tid",
1401                    "stat events on existing thread id"),
1402         OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1403                     "system-wide collection from all CPUs"),
1404         OPT_BOOLEAN('g', "group", &group,
1405                     "put the counters into a counter group"),
1406         OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1407         OPT_INCR('v', "verbose", &verbose,
1408                     "be more verbose (show counter open errors, etc)"),
1409         OPT_INTEGER('r', "repeat", &run_count,
1410                     "repeat command and print average + stddev (max: 100, forever: 0)"),
1411         OPT_BOOLEAN('n', "null", &null_run,
1412                     "null run - dont start any counters"),
1413         OPT_INCR('d', "detailed", &detailed_run,
1414                     "detailed run - start a lot of events"),
1415         OPT_BOOLEAN('S', "sync", &sync_run,
1416                     "call sync() before starting a run"),
1417         OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1418                            "print large numbers with thousands\' separators",
1419                            stat__set_big_num),
1420         OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1421                     "list of cpus to monitor in system-wide"),
1422         OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1423                     "disable CPU count aggregation", AGGR_NONE),
1424         OPT_STRING('x', "field-separator", &csv_sep, "separator",
1425                    "print counts with custom separator"),
1426         OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1427                      "monitor event in cgroup name only", parse_cgroups),
1428         OPT_STRING('o', "output", &output_name, "file", "output file name"),
1429         OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1430         OPT_INTEGER(0, "log-fd", &output_fd,
1431                     "log output to fd, instead of stderr"),
1432         OPT_STRING(0, "pre", &pre_cmd, "command",
1433                         "command to run prior to the measured command"),
1434         OPT_STRING(0, "post", &post_cmd, "command",
1435                         "command to run after to the measured command"),
1436         OPT_UINTEGER('I', "interval-print", &interval,
1437                     "print counts at regular interval in ms (>= 100)"),
1438         OPT_SET_UINT(0, "per-socket", &aggr_mode,
1439                      "aggregate counts per processor socket", AGGR_SOCKET),
1440         OPT_SET_UINT(0, "per-core", &aggr_mode,
1441                      "aggregate counts per physical processor core", AGGR_CORE),
1442         OPT_UINTEGER('D', "delay", &initial_delay,
1443                      "ms to wait before starting measurement after program start"),
1444         OPT_END()
1445         };
1446         const char * const stat_usage[] = {
1447                 "perf stat [<options>] [<command>]",
1448                 NULL
1449         };
1450         int status = -ENOMEM, run_idx;
1451         const char *mode;
1452
1453         setlocale(LC_ALL, "");
1454
1455         evsel_list = perf_evlist__new();
1456         if (evsel_list == NULL)
1457                 return -ENOMEM;
1458
1459         argc = parse_options(argc, argv, options, stat_usage,
1460                 PARSE_OPT_STOP_AT_NON_OPTION);
1461
1462         output = stderr;
1463         if (output_name && strcmp(output_name, "-"))
1464                 output = NULL;
1465
1466         if (output_name && output_fd) {
1467                 fprintf(stderr, "cannot use both --output and --log-fd\n");
1468                 usage_with_options(stat_usage, options);
1469         }
1470
1471         if (output_fd < 0) {
1472                 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1473                 usage_with_options(stat_usage, options);
1474         }
1475
1476         if (!output) {
1477                 struct timespec tm;
1478                 mode = append_file ? "a" : "w";
1479
1480                 output = fopen(output_name, mode);
1481                 if (!output) {
1482                         perror("failed to create output file");
1483                         return -1;
1484                 }
1485                 clock_gettime(CLOCK_REALTIME, &tm);
1486                 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1487         } else if (output_fd > 0) {
1488                 mode = append_file ? "a" : "w";
1489                 output = fdopen(output_fd, mode);
1490                 if (!output) {
1491                         perror("Failed opening logfd");
1492                         return -errno;
1493                 }
1494         }
1495
1496         if (csv_sep) {
1497                 csv_output = true;
1498                 if (!strcmp(csv_sep, "\\t"))
1499                         csv_sep = "\t";
1500         } else
1501                 csv_sep = DEFAULT_SEPARATOR;
1502
1503         /*
1504          * let the spreadsheet do the pretty-printing
1505          */
1506         if (csv_output) {
1507                 /* User explicitly passed -B? */
1508                 if (big_num_opt == 1) {
1509                         fprintf(stderr, "-B option not supported with -x\n");
1510                         usage_with_options(stat_usage, options);
1511                 } else /* Nope, so disable big number formatting */
1512                         big_num = false;
1513         } else if (big_num_opt == 0) /* User passed --no-big-num */
1514                 big_num = false;
1515
1516         if (!argc && !perf_target__has_task(&target))
1517                 usage_with_options(stat_usage, options);
1518         if (run_count < 0) {
1519                 usage_with_options(stat_usage, options);
1520         } else if (run_count == 0) {
1521                 forever = true;
1522                 run_count = 1;
1523         }
1524
1525         /* no_aggr, cgroup are for system-wide only */
1526         if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
1527              && !perf_target__has_cpu(&target)) {
1528                 fprintf(stderr, "both cgroup and no-aggregation "
1529                         "modes only available in system-wide mode\n");
1530
1531                 usage_with_options(stat_usage, options);
1532                 return -1;
1533         }
1534
1535         if (add_default_attributes())
1536                 goto out;
1537
1538         perf_target__validate(&target);
1539
1540         if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1541                 if (perf_target__has_task(&target))
1542                         pr_err("Problems finding threads of monitor\n");
1543                 if (perf_target__has_cpu(&target))
1544                         perror("failed to parse CPUs map");
1545
1546                 usage_with_options(stat_usage, options);
1547                 return -1;
1548         }
1549         if (interval && interval < 100) {
1550                 pr_err("print interval must be >= 100ms\n");
1551                 usage_with_options(stat_usage, options);
1552                 return -1;
1553         }
1554
1555         if (perf_evlist__alloc_stats(evsel_list, interval))
1556                 goto out_free_maps;
1557
1558         if (perf_stat_init_aggr_mode())
1559                 goto out;
1560
1561         /*
1562          * We dont want to block the signals - that would cause
1563          * child tasks to inherit that and Ctrl-C would not work.
1564          * What we want is for Ctrl-C to work in the exec()-ed
1565          * task, but being ignored by perf stat itself:
1566          */
1567         atexit(sig_atexit);
1568         if (!forever)
1569                 signal(SIGINT,  skip_signal);
1570         signal(SIGCHLD, skip_signal);
1571         signal(SIGALRM, skip_signal);
1572         signal(SIGABRT, skip_signal);
1573
1574         status = 0;
1575         for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1576                 if (run_count != 1 && verbose)
1577                         fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1578                                 run_idx + 1);
1579
1580                 status = run_perf_stat(argc, argv);
1581                 if (forever && status != -1) {
1582                         print_stat(argc, argv);
1583                         perf_stat__reset_stats(evsel_list);
1584                 }
1585         }
1586
1587         if (!forever && status != -1 && !interval)
1588                 print_stat(argc, argv);
1589
1590         perf_evlist__free_stats(evsel_list);
1591 out_free_maps:
1592         perf_evlist__delete_maps(evsel_list);
1593 out:
1594         perf_evlist__delete(evsel_list);
1595         return status;
1596 }