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