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                 child_pid = evsel_list->workload.pid;
 461         }
 462
 463         if (group)
 464                 perf_evlist__set_leader(evsel_list);
 465
 466         list_for_each_entry(counter, &evsel_list->entries, node) {
 467                 if (create_perf_stat_counter(counter) < 0) {
 468                         /*
 469                          * PPC returns ENXIO for HW counters until 2.6.37
 470                          * (behavior changed with commit b0a873e).
 471                          */
 472                         if (errno == EINVAL || errno == ENOSYS ||
 473                             errno == ENOENT || errno == EOPNOTSUPP ||
 474                             errno == ENXIO) {
 475                                 if (verbose)
 476                                         ui__warning("%s event is not supported by the kernel.\n",
 477                                                     perf_evsel__name(counter));
 478                                 counter->supported = false;
 479                                 continue;
 480                         }
 481
 482                         perf_evsel__open_strerror(counter, &target,
 483                                                   errno, msg, sizeof(msg));
 484                         ui__error("%s\n", msg);
 485
 486                         if (child_pid != -1)
 487                                 kill(child_pid, SIGTERM);
 488
 489                         return -1;
 490                 }
 491                 counter->supported = true;
 492         }
 493
 494         if (perf_evlist__apply_filters(evsel_list)) {
 495                 error("failed to set filter with %d (%s)\n", errno,
 496                         strerror(errno));
 497                 return -1;
 498         }
 499
 500         /*
 501          * Enable counters and exec the command:
 502          */
 503         t0 = rdclock();
 504         clock_gettime(CLOCK_MONOTONIC, &ref_time);
 505
 506         if (forks) {
 507                 perf_evlist__start_workload(evsel_list);
 508                 handle_initial_delay();
 509
 510                 if (interval) {
 511                         while (!waitpid(child_pid, &status, WNOHANG)) {
 512                                 nanosleep(&ts, NULL);
 513                                 print_interval();
 514                         }
 515                 }
 516                 wait(&status);
 517                 if (WIFSIGNALED(status))
 518                         psignal(WTERMSIG(status), argv[0]);
 519         } else {
 520                 handle_initial_delay();
 521                 while (!done) {
 522                         nanosleep(&ts, NULL);
 523                         if (interval)
 524                                 print_interval();
 525                 }
 526         }
 527
 528         t1 = rdclock();
 529
 530         update_stats(&walltime_nsecs_stats, t1 - t0);
 531
 532         if (aggr_mode == AGGR_GLOBAL) {
 533                 list_for_each_entry(counter, &evsel_list->entries, node) {
 534                         read_counter_aggr(counter);
 535                         perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
 536                                              thread_map__nr(evsel_list->threads));
 537                 }
 538         } else {
 539                 list_for_each_entry(counter, &evsel_list->entries, node) {
 540                         read_counter(counter);
 541                         perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
 542                 }
 543         }
 544
 545         return WEXITSTATUS(status);
 546 }
 547
 548 static int run_perf_stat(int argc __maybe_unused, const char **argv)
 549 {
 550         int ret;
 551
 552         if (pre_cmd) {
 553                 ret = system(pre_cmd);
 554                 if (ret)
 555                         return ret;
 556         }
 557
 558         if (sync_run)
 559                 sync();
 560
 561         ret = __run_perf_stat(argc, argv);
 562         if (ret)
 563                 return ret;
 564
 565         if (post_cmd) {
 566                 ret = system(post_cmd);
 567                 if (ret)
 568                         return ret;
 569         }
 570
 571         return ret;
 572 }
 573
 574 static void print_noise_pct(double total, double avg)
 575 {
 576         double pct = rel_stddev_stats(total, avg);
 577
 578         if (csv_output)
 579                 fprintf(output, "%s%.2f%%", csv_sep, pct);
 580         else if (pct)
 581                 fprintf(output, "  ( +-%6.2f%% )", pct);
 582 }
 583
 584 static void print_noise(struct perf_evsel *evsel, double avg)
 585 {
 586         struct perf_stat *ps;
 587
 588         if (run_count == 1)
 589                 return;
 590
 591         ps = evsel->priv;
 592         print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
 593 }
 594
 595 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
 596 {
 597         switch (aggr_mode) {
 598         case AGGR_CORE:
 599                 fprintf(output, "S%d-C%*d%s%*d%s",
 600                         cpu_map__id_to_socket(id),
 601                         csv_output ? 0 : -8,
 602                         cpu_map__id_to_cpu(id),
 603                         csv_sep,
 604                         csv_output ? 0 : 4,
 605                         nr,
 606                         csv_sep);
 607                 break;
 608         case AGGR_SOCKET:
 609                 fprintf(output, "S%*d%s%*d%s",
 610                         csv_output ? 0 : -5,
 611                         id,
 612                         csv_sep,
 613                         csv_output ? 0 : 4,
 614                         nr,
 615                         csv_sep);
 616                         break;
 617         case AGGR_NONE:
 618                 fprintf(output, "CPU%*d%s",
 619                         csv_output ? 0 : -4,
 620                         perf_evsel__cpus(evsel)->map[id], csv_sep);
 621                 break;
 622         case AGGR_GLOBAL:
 623         default:
 624                 break;
 625         }
 626 }
 627
 628 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 629 {
 630         double msecs = avg / 1e6;
 631         const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
 632
 633         aggr_printout(evsel, cpu, nr);
 634
 635         fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
 636
 637         if (evsel->cgrp)
 638                 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 639
 640         if (csv_output || interval)
 641                 return;
 642
 643         if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
 644                 fprintf(output, " # %8.3f CPUs utilized          ",
 645                         avg / avg_stats(&walltime_nsecs_stats));
 646         else
 647                 fprintf(output, "                                   ");
 648 }
 649
 650 /* used for get_ratio_color() */
 651 enum grc_type {
 652         GRC_STALLED_CYCLES_FE,
 653         GRC_STALLED_CYCLES_BE,
 654         GRC_CACHE_MISSES,
 655         GRC_MAX_NR
 656 };
 657
 658 static const char *get_ratio_color(enum grc_type type, double ratio)
 659 {
 660         static const double grc_table[GRC_MAX_NR][3] = {
 661                 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
 662                 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
 663                 [GRC_CACHE_MISSES]      = { 20.0, 10.0, 5.0 },
 664         };
 665         const char *color = PERF_COLOR_NORMAL;
 666
 667         if (ratio > grc_table[type][0])
 668                 color = PERF_COLOR_RED;
 669         else if (ratio > grc_table[type][1])
 670                 color = PERF_COLOR_MAGENTA;
 671         else if (ratio > grc_table[type][2])
 672                 color = PERF_COLOR_YELLOW;
 673
 674         return color;
 675 }
 676
 677 static void print_stalled_cycles_frontend(int cpu,
 678                                           struct perf_evsel *evsel
 679                                           __maybe_unused, double avg)
 680 {
 681         double total, ratio = 0.0;
 682         const char *color;
 683
 684         total = avg_stats(&runtime_cycles_stats[cpu]);
 685
 686         if (total)
 687                 ratio = avg / total * 100.0;
 688
 689         color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
 690
 691         fprintf(output, " #  ");
 692         color_fprintf(output, color, "%6.2f%%", ratio);
 693         fprintf(output, " frontend cycles idle   ");
 694 }
 695
 696 static void print_stalled_cycles_backend(int cpu,
 697                                          struct perf_evsel *evsel
 698                                          __maybe_unused, double avg)
 699 {
 700         double total, ratio = 0.0;
 701         const char *color;
 702
 703         total = avg_stats(&runtime_cycles_stats[cpu]);
 704
 705         if (total)
 706                 ratio = avg / total * 100.0;
 707
 708         color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
 709
 710         fprintf(output, " #  ");
 711         color_fprintf(output, color, "%6.2f%%", ratio);
 712         fprintf(output, " backend  cycles idle   ");
 713 }
 714
 715 static void print_branch_misses(int cpu,
 716                                 struct perf_evsel *evsel __maybe_unused,
 717                                 double avg)
 718 {
 719         double total, ratio = 0.0;
 720         const char *color;
 721
 722         total = avg_stats(&runtime_branches_stats[cpu]);
 723
 724         if (total)
 725                 ratio = avg / total * 100.0;
 726
 727         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 728
 729         fprintf(output, " #  ");
 730         color_fprintf(output, color, "%6.2f%%", ratio);
 731         fprintf(output, " of all branches        ");
 732 }
 733
 734 static void print_l1_dcache_misses(int cpu,
 735                                    struct perf_evsel *evsel __maybe_unused,
 736                                    double avg)
 737 {
 738         double total, ratio = 0.0;
 739         const char *color;
 740
 741         total = avg_stats(&runtime_l1_dcache_stats[cpu]);
 742
 743         if (total)
 744                 ratio = avg / total * 100.0;
 745
 746         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 747
 748         fprintf(output, " #  ");
 749         color_fprintf(output, color, "%6.2f%%", ratio);
 750         fprintf(output, " of all L1-dcache hits  ");
 751 }
 752
 753 static void print_l1_icache_misses(int cpu,
 754                                    struct perf_evsel *evsel __maybe_unused,
 755                                    double avg)
 756 {
 757         double total, ratio = 0.0;
 758         const char *color;
 759
 760         total = avg_stats(&runtime_l1_icache_stats[cpu]);
 761
 762         if (total)
 763                 ratio = avg / total * 100.0;
 764
 765         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 766
 767         fprintf(output, " #  ");
 768         color_fprintf(output, color, "%6.2f%%", ratio);
 769         fprintf(output, " of all L1-icache hits  ");
 770 }
 771
 772 static void print_dtlb_cache_misses(int cpu,
 773                                     struct perf_evsel *evsel __maybe_unused,
 774                                     double avg)
 775 {
 776         double total, ratio = 0.0;
 777         const char *color;
 778
 779         total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
 780
 781         if (total)
 782                 ratio = avg / total * 100.0;
 783
 784         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 785
 786         fprintf(output, " #  ");
 787         color_fprintf(output, color, "%6.2f%%", ratio);
 788         fprintf(output, " of all dTLB cache hits ");
 789 }
 790
 791 static void print_itlb_cache_misses(int cpu,
 792                                     struct perf_evsel *evsel __maybe_unused,
 793                                     double avg)
 794 {
 795         double total, ratio = 0.0;
 796         const char *color;
 797
 798         total = avg_stats(&runtime_itlb_cache_stats[cpu]);
 799
 800         if (total)
 801                 ratio = avg / total * 100.0;
 802
 803         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 804
 805         fprintf(output, " #  ");
 806         color_fprintf(output, color, "%6.2f%%", ratio);
 807         fprintf(output, " of all iTLB cache hits ");
 808 }
 809
 810 static void print_ll_cache_misses(int cpu,
 811                                   struct perf_evsel *evsel __maybe_unused,
 812                                   double avg)
 813 {
 814         double total, ratio = 0.0;
 815         const char *color;
 816
 817         total = avg_stats(&runtime_ll_cache_stats[cpu]);
 818
 819         if (total)
 820                 ratio = avg / total * 100.0;
 821
 822         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 823
 824         fprintf(output, " #  ");
 825         color_fprintf(output, color, "%6.2f%%", ratio);
 826         fprintf(output, " of all LL-cache hits   ");
 827 }
 828
 829 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 830 {
 831         double total, ratio = 0.0;
 832         const char *fmt;
 833
 834         if (csv_output)
 835                 fmt = "%.0f%s%s";
 836         else if (big_num)
 837                 fmt = "%'18.0f%s%-25s";
 838         else
 839                 fmt = "%18.0f%s%-25s";
 840
 841         aggr_printout(evsel, cpu, nr);
 842
 843         if (aggr_mode == AGGR_GLOBAL)
 844                 cpu = 0;
 845
 846         fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
 847
 848         if (evsel->cgrp)
 849                 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 850
 851         if (csv_output || interval)
 852                 return;
 853
 854         if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
 855                 total = avg_stats(&runtime_cycles_stats[cpu]);
 856                 if (total)
 857                         ratio = avg / total;
 858
 859                 fprintf(output, " #   %5.2f  insns per cycle        ", ratio);
 860
 861                 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
 862                 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
 863
 864                 if (total && avg) {
 865                         ratio = total / avg;
 866                         fprintf(output, "\n                                             #   %5.2f  stalled cycles per insn", ratio);
 867                 }
 868
 869         } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
 870                         runtime_branches_stats[cpu].n != 0) {
 871                 print_branch_misses(cpu, evsel, avg);
 872         } else if (
 873                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 874                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1D |
 875                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 876                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 877                         runtime_l1_dcache_stats[cpu].n != 0) {
 878                 print_l1_dcache_misses(cpu, evsel, avg);
 879         } else if (
 880                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 881                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1I |
 882                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 883                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 884                         runtime_l1_icache_stats[cpu].n != 0) {
 885                 print_l1_icache_misses(cpu, evsel, avg);
 886         } else if (
 887                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 888                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_DTLB |
 889                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 890                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 891                         runtime_dtlb_cache_stats[cpu].n != 0) {
 892                 print_dtlb_cache_misses(cpu, evsel, avg);
 893         } else if (
 894                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 895                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_ITLB |
 896                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 897                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 898                         runtime_itlb_cache_stats[cpu].n != 0) {
 899                 print_itlb_cache_misses(cpu, evsel, avg);
 900         } else if (
 901                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 902                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_LL |
 903                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 904                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 905                         runtime_ll_cache_stats[cpu].n != 0) {
 906                 print_ll_cache_misses(cpu, evsel, avg);
 907         } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
 908                         runtime_cacherefs_stats[cpu].n != 0) {
 909                 total = avg_stats(&runtime_cacherefs_stats[cpu]);
 910
 911                 if (total)
 912                         ratio = avg * 100 / total;
 913
 914                 fprintf(output, " # %8.3f %% of all cache refs    ", ratio);
 915
 916         } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
 917                 print_stalled_cycles_frontend(cpu, evsel, avg);
 918         } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
 919                 print_stalled_cycles_backend(cpu, evsel, avg);
 920         } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
 921                 total = avg_stats(&runtime_nsecs_stats[cpu]);
 922
 923                 if (total)
 924                         ratio = 1.0 * avg / total;
 925
 926                 fprintf(output, " # %8.3f GHz                    ", ratio);
 927         } else if (runtime_nsecs_stats[cpu].n != 0) {
 928                 char unit = 'M';
 929
 930                 total = avg_stats(&runtime_nsecs_stats[cpu]);
 931
 932                 if (total)
 933                         ratio = 1000.0 * avg / total;
 934                 if (ratio < 0.001) {
 935                         ratio *= 1000;
 936                         unit = 'K';
 937                 }
 938
 939                 fprintf(output, " # %8.3f %c/sec                  ", ratio, unit);
 940         } else {
 941                 fprintf(output, "                                   ");
 942         }
 943 }
 944
 945 static void print_aggr(char *prefix)
 946 {
 947         struct perf_evsel *counter;
 948         int cpu, cpu2, s, s2, id, nr;
 949         u64 ena, run, val;
 950
 951         if (!(aggr_map || aggr_get_id))
 952                 return;
 953
 954         for (s = 0; s < aggr_map->nr; s++) {
 955                 id = aggr_map->map[s];
 956                 list_for_each_entry(counter, &evsel_list->entries, node) {
 957                         val = ena = run = 0;
 958                         nr = 0;
 959                         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
 960                                 cpu2 = perf_evsel__cpus(counter)->map[cpu];
 961                                 s2 = aggr_get_id(evsel_list->cpus, cpu2);
 962                                 if (s2 != id)
 963                                         continue;
 964                                 val += counter->counts->cpu[cpu].val;
 965                                 ena += counter->counts->cpu[cpu].ena;
 966                                 run += counter->counts->cpu[cpu].run;
 967                                 nr++;
 968                         }
 969                         if (prefix)
 970                                 fprintf(output, "%s", prefix);
 971
 972                         if (run == 0 || ena == 0) {
 973                                 aggr_printout(counter, id, nr);
 974
 975                                 fprintf(output, "%*s%s%*s",
 976                                         csv_output ? 0 : 18,
 977                                         counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
 978                                         csv_sep,
 979                                         csv_output ? 0 : -24,
 980                                         perf_evsel__name(counter));
 981
 982                                 if (counter->cgrp)
 983                                         fprintf(output, "%s%s",
 984                                                 csv_sep, counter->cgrp->name);
 985
 986                                 fputc('\n', output);
 987                                 continue;
 988                         }
 989
 990                         if (nsec_counter(counter))
 991                                 nsec_printout(id, nr, counter, val);
 992                         else
 993                                 abs_printout(id, nr, counter, val);
 994
 995                         if (!csv_output) {
 996                                 print_noise(counter, 1.0);
 997
 998                                 if (run != ena)
 999                                         fprintf(output, "  (%.2f%%)",
1000                                                 100.0 * run / ena);
1001                         }
1002                         fputc('\n', output);
1003                 }
1004         }
1005 }
1006
1007 /*
1008  * Print out the results of a single counter:
1009  * aggregated counts in system-wide mode
1010  */
1011 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1012 {
1013         struct perf_stat *ps = counter->priv;
1014         double avg = avg_stats(&ps->res_stats[0]);
1015         int scaled = counter->counts->scaled;
1016
1017         if (prefix)
1018                 fprintf(output, "%s", prefix);
1019
1020         if (scaled == -1) {
1021                 fprintf(output, "%*s%s%*s",
1022                         csv_output ? 0 : 18,
1023                         counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1024                         csv_sep,
1025                         csv_output ? 0 : -24,
1026                         perf_evsel__name(counter));
1027
1028                 if (counter->cgrp)
1029                         fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1030
1031                 fputc('\n', output);
1032                 return;
1033         }
1034
1035         if (nsec_counter(counter))
1036                 nsec_printout(-1, 0, counter, avg);
1037         else
1038                 abs_printout(-1, 0, counter, avg);
1039
1040         print_noise(counter, avg);
1041
1042         if (csv_output) {
1043                 fputc('\n', output);
1044                 return;
1045         }
1046
1047         if (scaled) {
1048                 double avg_enabled, avg_running;
1049
1050                 avg_enabled = avg_stats(&ps->res_stats[1]);
1051                 avg_running = avg_stats(&ps->res_stats[2]);
1052
1053                 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1054         }
1055         fprintf(output, "\n");
1056 }
1057
1058 /*
1059  * Print out the results of a single counter:
1060  * does not use aggregated count in system-wide
1061  */
1062 static void print_counter(struct perf_evsel *counter, char *prefix)
1063 {
1064         u64 ena, run, val;
1065         int cpu;
1066
1067         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1068                 val = counter->counts->cpu[cpu].val;
1069                 ena = counter->counts->cpu[cpu].ena;
1070                 run = counter->counts->cpu[cpu].run;
1071
1072                 if (prefix)
1073                         fprintf(output, "%s", prefix);
1074
1075                 if (run == 0 || ena == 0) {
1076                         fprintf(output, "CPU%*d%s%*s%s%*s",
1077                                 csv_output ? 0 : -4,
1078                                 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1079                                 csv_output ? 0 : 18,
1080                                 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1081                                 csv_sep,
1082                                 csv_output ? 0 : -24,
1083                                 perf_evsel__name(counter));
1084
1085                         if (counter->cgrp)
1086                                 fprintf(output, "%s%s",
1087                                         csv_sep, counter->cgrp->name);
1088
1089                         fputc('\n', output);
1090                         continue;
1091                 }
1092
1093                 if (nsec_counter(counter))
1094                         nsec_printout(cpu, 0, counter, val);
1095                 else
1096                         abs_printout(cpu, 0, counter, val);
1097
1098                 if (!csv_output) {
1099                         print_noise(counter, 1.0);
1100
1101                         if (run != ena)
1102                                 fprintf(output, "  (%.2f%%)",
1103                                         100.0 * run / ena);
1104                 }
1105                 fputc('\n', output);
1106         }
1107 }
1108
1109 static void print_stat(int argc, const char **argv)
1110 {
1111         struct perf_evsel *counter;
1112         int i;
1113
1114         fflush(stdout);
1115
1116         if (!csv_output) {
1117                 fprintf(output, "\n");
1118                 fprintf(output, " Performance counter stats for ");
1119                 if (!perf_target__has_task(&target)) {
1120                         fprintf(output, "\'%s", argv[0]);
1121                         for (i = 1; i < argc; i++)
1122                                 fprintf(output, " %s", argv[i]);
1123                 } else if (target.pid)
1124                         fprintf(output, "process id \'%s", target.pid);
1125                 else
1126                         fprintf(output, "thread id \'%s", target.tid);
1127
1128                 fprintf(output, "\'");
1129                 if (run_count > 1)
1130                         fprintf(output, " (%d runs)", run_count);
1131                 fprintf(output, ":\n\n");
1132         }
1133
1134         switch (aggr_mode) {
1135         case AGGR_CORE:
1136         case AGGR_SOCKET:
1137                 print_aggr(NULL);
1138                 break;
1139         case AGGR_GLOBAL:
1140                 list_for_each_entry(counter, &evsel_list->entries, node)
1141                         print_counter_aggr(counter, NULL);
1142                 break;
1143         case AGGR_NONE:
1144                 list_for_each_entry(counter, &evsel_list->entries, node)
1145                         print_counter(counter, NULL);
1146                 break;
1147         default:
1148                 break;
1149         }
1150
1151         if (!csv_output) {
1152                 if (!null_run)
1153                         fprintf(output, "\n");
1154                 fprintf(output, " %17.9f seconds time elapsed",
1155                                 avg_stats(&walltime_nsecs_stats)/1e9);
1156                 if (run_count > 1) {
1157                         fprintf(output, "                                        ");
1158                         print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1159                                         avg_stats(&walltime_nsecs_stats));
1160                 }
1161                 fprintf(output, "\n\n");
1162         }
1163 }
1164
1165 static volatile int signr = -1;
1166
1167 static void skip_signal(int signo)
1168 {
1169         if ((child_pid == -1) || interval)
1170                 done = 1;
1171
1172         signr = signo;
1173         /*
1174          * render child_pid harmless
1175          * won't send SIGTERM to a random
1176          * process in case of race condition
1177          * and fast PID recycling
1178          */
1179         child_pid = -1;
1180 }
1181
1182 static void sig_atexit(void)
1183 {
1184         sigset_t set, oset;
1185
1186         /*
1187          * avoid race condition with SIGCHLD handler
1188          * in skip_signal() which is modifying child_pid
1189          * goal is to avoid send SIGTERM to a random
1190          * process
1191          */
1192         sigemptyset(&set);
1193         sigaddset(&set, SIGCHLD);
1194         sigprocmask(SIG_BLOCK, &set, &oset);
1195
1196         if (child_pid != -1)
1197                 kill(child_pid, SIGTERM);
1198
1199         sigprocmask(SIG_SETMASK, &oset, NULL);
1200
1201         if (signr == -1)
1202                 return;
1203
1204         signal(signr, SIG_DFL);
1205         kill(getpid(), signr);
1206 }
1207
1208 static int stat__set_big_num(const struct option *opt __maybe_unused,
1209                              const char *s __maybe_unused, int unset)
1210 {
1211         big_num_opt = unset ? 0 : 1;
1212         return 0;
1213 }
1214
1215 static int perf_stat_init_aggr_mode(void)
1216 {
1217         switch (aggr_mode) {
1218         case AGGR_SOCKET:
1219                 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1220                         perror("cannot build socket map");
1221                         return -1;
1222                 }
1223                 aggr_get_id = cpu_map__get_socket;
1224                 break;
1225         case AGGR_CORE:
1226                 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1227                         perror("cannot build core map");
1228                         return -1;
1229                 }
1230                 aggr_get_id = cpu_map__get_core;
1231                 break;
1232         case AGGR_NONE:
1233         case AGGR_GLOBAL:
1234         default:
1235                 break;
1236         }
1237         return 0;
1238 }
1239
1240
1241 /*
1242  * Add default attributes, if there were no attributes specified or
1243  * if -d/--detailed, -d -d or -d -d -d is used:
1244  */
1245 static int add_default_attributes(void)
1246 {
1247         struct perf_event_attr default_attrs[] = {
1248
1249   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK              },
1250   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES        },
1251   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS          },
1252   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS             },
1253
1254   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES              },
1255   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1256   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND  },
1257   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS            },
1258   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS     },
1259   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES           },
1260
1261 };
1262
1263 /*
1264  * Detailed stats (-d), covering the L1 and last level data caches:
1265  */
1266         struct perf_event_attr detailed_attrs[] = {
1267
1268   { .type = PERF_TYPE_HW_CACHE,
1269     .config =
1270          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1271         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1272         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1273
1274   { .type = PERF_TYPE_HW_CACHE,
1275     .config =
1276          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1277         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1278         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1279
1280   { .type = PERF_TYPE_HW_CACHE,
1281     .config =
1282          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1283         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1284         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1285
1286   { .type = PERF_TYPE_HW_CACHE,
1287     .config =
1288          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1289         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1290         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1291 };
1292
1293 /*
1294  * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1295  */
1296         struct perf_event_attr very_detailed_attrs[] = {
1297
1298   { .type = PERF_TYPE_HW_CACHE,
1299     .config =
1300          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1301         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1302         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1303
1304   { .type = PERF_TYPE_HW_CACHE,
1305     .config =
1306          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1307         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1308         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1309
1310   { .type = PERF_TYPE_HW_CACHE,
1311     .config =
1312          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1313         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1314         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1315
1316   { .type = PERF_TYPE_HW_CACHE,
1317     .config =
1318          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1319         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1320         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1321
1322   { .type = PERF_TYPE_HW_CACHE,
1323     .config =
1324          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1325         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1326         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1327
1328   { .type = PERF_TYPE_HW_CACHE,
1329     .config =
1330          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1331         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1332         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1333
1334 };
1335
1336 /*
1337  * Very, very detailed stats (-d -d -d), adding prefetch events:
1338  */
1339         struct perf_event_attr very_very_detailed_attrs[] = {
1340
1341   { .type = PERF_TYPE_HW_CACHE,
1342     .config =
1343          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1344         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1345         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1346
1347   { .type = PERF_TYPE_HW_CACHE,
1348     .config =
1349          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1350         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1351         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1352 };
1353
1354         /* Set attrs if no event is selected and !null_run: */
1355         if (null_run)
1356                 return 0;
1357
1358         if (!evsel_list->nr_entries) {
1359                 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1360                         return -1;
1361         }
1362
1363         /* Detailed events get appended to the event list: */
1364
1365         if (detailed_run <  1)
1366                 return 0;
1367
1368         /* Append detailed run extra attributes: */
1369         if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1370                 return -1;
1371
1372         if (detailed_run < 2)
1373                 return 0;
1374
1375         /* Append very detailed run extra attributes: */
1376         if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1377                 return -1;
1378
1379         if (detailed_run < 3)
1380                 return 0;
1381
1382         /* Append very, very detailed run extra attributes: */
1383         return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1384 }
1385
1386 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1387 {
1388         bool append_file = false;
1389         int output_fd = 0;
1390         const char *output_name = NULL;
1391         const struct option options[] = {
1392         OPT_CALLBACK('e', "event", &evsel_list, "event",
1393                      "event selector. use 'perf list' to list available events",
1394                      parse_events_option),
1395         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1396                      "event filter", parse_filter),
1397         OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1398                     "child tasks do not inherit counters"),
1399         OPT_STRING('p', "pid", &target.pid, "pid",
1400                    "stat events on existing process id"),
1401         OPT_STRING('t', "tid", &target.tid, "tid",
1402                    "stat events on existing thread id"),
1403         OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1404                     "system-wide collection from all CPUs"),
1405         OPT_BOOLEAN('g', "group", &group,
1406                     "put the counters into a counter group"),
1407         OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1408         OPT_INCR('v', "verbose", &verbose,
1409                     "be more verbose (show counter open errors, etc)"),
1410         OPT_INTEGER('r', "repeat", &run_count,
1411                     "repeat command and print average + stddev (max: 100, forever: 0)"),
1412         OPT_BOOLEAN('n', "null", &null_run,
1413                     "null run - dont start any counters"),
1414         OPT_INCR('d', "detailed", &detailed_run,
1415                     "detailed run - start a lot of events"),
1416         OPT_BOOLEAN('S', "sync", &sync_run,
1417                     "call sync() before starting a run"),
1418         OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1419                            "print large numbers with thousands\' separators",
1420                            stat__set_big_num),
1421         OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1422                     "list of cpus to monitor in system-wide"),
1423         OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1424                     "disable CPU count aggregation", AGGR_NONE),
1425         OPT_STRING('x', "field-separator", &csv_sep, "separator",
1426                    "print counts with custom separator"),
1427         OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1428                      "monitor event in cgroup name only", parse_cgroups),
1429         OPT_STRING('o', "output", &output_name, "file", "output file name"),
1430         OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1431         OPT_INTEGER(0, "log-fd", &output_fd,
1432                     "log output to fd, instead of stderr"),
1433         OPT_STRING(0, "pre", &pre_cmd, "command",
1434                         "command to run prior to the measured command"),
1435         OPT_STRING(0, "post", &post_cmd, "command",
1436                         "command to run after to the measured command"),
1437         OPT_UINTEGER('I', "interval-print", &interval,
1438                     "print counts at regular interval in ms (>= 100)"),
1439         OPT_SET_UINT(0, "per-socket", &aggr_mode,
1440                      "aggregate counts per processor socket", AGGR_SOCKET),
1441         OPT_SET_UINT(0, "per-core", &aggr_mode,
1442                      "aggregate counts per physical processor core", AGGR_CORE),
1443         OPT_UINTEGER('D', "delay", &initial_delay,
1444                      "ms to wait before starting measurement after program start"),
1445         OPT_END()
1446         };
1447         const char * const stat_usage[] = {
1448                 "perf stat [<options>] [<command>]",
1449                 NULL
1450         };
1451         int status = -ENOMEM, run_idx;
1452         const char *mode;
1453
1454         setlocale(LC_ALL, "");
1455
1456         evsel_list = perf_evlist__new();
1457         if (evsel_list == NULL)
1458                 return -ENOMEM;
1459
1460         argc = parse_options(argc, argv, options, stat_usage,
1461                 PARSE_OPT_STOP_AT_NON_OPTION);
1462
1463         output = stderr;
1464         if (output_name && strcmp(output_name, "-"))
1465                 output = NULL;
1466
1467         if (output_name && output_fd) {
1468                 fprintf(stderr, "cannot use both --output and --log-fd\n");
1469                 usage_with_options(stat_usage, options);
1470         }
1471
1472         if (output_fd < 0) {
1473                 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1474                 usage_with_options(stat_usage, options);
1475         }
1476
1477         if (!output) {
1478                 struct timespec tm;
1479                 mode = append_file ? "a" : "w";
1480
1481                 output = fopen(output_name, mode);
1482                 if (!output) {
1483                         perror("failed to create output file");
1484                         return -1;
1485                 }
1486                 clock_gettime(CLOCK_REALTIME, &tm);
1487                 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1488         } else if (output_fd > 0) {
1489                 mode = append_file ? "a" : "w";
1490                 output = fdopen(output_fd, mode);
1491                 if (!output) {
1492                         perror("Failed opening logfd");
1493                         return -errno;
1494                 }
1495         }
1496
1497         if (csv_sep) {
1498                 csv_output = true;
1499                 if (!strcmp(csv_sep, "\\t"))
1500                         csv_sep = "\t";
1501         } else
1502                 csv_sep = DEFAULT_SEPARATOR;
1503
1504         /*
1505          * let the spreadsheet do the pretty-printing
1506          */
1507         if (csv_output) {
1508                 /* User explicitly passed -B? */
1509                 if (big_num_opt == 1) {
1510                         fprintf(stderr, "-B option not supported with -x\n");
1511                         usage_with_options(stat_usage, options);
1512                 } else /* Nope, so disable big number formatting */
1513                         big_num = false;
1514         } else if (big_num_opt == 0) /* User passed --no-big-num */
1515                 big_num = false;
1516
1517         if (!argc && !perf_target__has_task(&target))
1518                 usage_with_options(stat_usage, options);
1519         if (run_count < 0) {
1520                 usage_with_options(stat_usage, options);
1521         } else if (run_count == 0) {
1522                 forever = true;
1523                 run_count = 1;
1524         }
1525
1526         /* no_aggr, cgroup are for system-wide only */
1527         if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
1528              && !perf_target__has_cpu(&target)) {
1529                 fprintf(stderr, "both cgroup and no-aggregation "
1530                         "modes only available in system-wide mode\n");
1531
1532                 usage_with_options(stat_usage, options);
1533                 return -1;
1534         }
1535
1536         if (add_default_attributes())
1537                 goto out;
1538
1539         perf_target__validate(&target);
1540
1541         if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1542                 if (perf_target__has_task(&target))
1543                         pr_err("Problems finding threads of monitor\n");
1544                 if (perf_target__has_cpu(&target))
1545                         perror("failed to parse CPUs map");
1546
1547                 usage_with_options(stat_usage, options);
1548                 return -1;
1549         }
1550         if (interval && interval < 100) {
1551                 pr_err("print interval must be >= 100ms\n");
1552                 usage_with_options(stat_usage, options);
1553                 return -1;
1554         }
1555
1556         if (perf_evlist__alloc_stats(evsel_list, interval))
1557                 goto out_free_maps;
1558
1559         if (perf_stat_init_aggr_mode())
1560                 goto out;
1561
1562         /*
1563          * We dont want to block the signals - that would cause
1564          * child tasks to inherit that and Ctrl-C would not work.
1565          * What we want is for Ctrl-C to work in the exec()-ed
1566          * task, but being ignored by perf stat itself:
1567          */
1568         atexit(sig_atexit);
1569         if (!forever)
1570                 signal(SIGINT,  skip_signal);
1571         signal(SIGCHLD, skip_signal);
1572         signal(SIGALRM, skip_signal);
1573         signal(SIGABRT, skip_signal);
1574
1575         status = 0;
1576         for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1577                 if (run_count != 1 && verbose)
1578                         fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1579                                 run_idx + 1);
1580
1581                 status = run_perf_stat(argc, argv);
1582                 if (forever && status != -1) {
1583                         print_stat(argc, argv);
1584                         perf_stat__reset_stats(evsel_list);
1585                 }
1586         }
1587
1588         if (!forever && status != -1 && !interval)
1589                 print_stat(argc, argv);
1590
1591         perf_evlist__free_stats(evsel_list);
1592 out_free_maps:
1593         perf_evlist__delete_maps(evsel_list);
1594 out:
1595         perf_evlist__delete(evsel_list);
1596         return status;
1597 }