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