Pileus Git - ~andy/linux/blob - 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/pmu.h"
  50 #include "util/event.h"
  51 #include "util/evlist.h"
  52 #include "util/evsel.h"
  53 #include "util/debug.h"
  54 #include "util/color.h"
  55 #include "util/stat.h"
  56 #include "util/header.h"
  57 #include "util/cpumap.h"
  58 #include "util/thread.h"
  59 #include "util/thread_map.h"
  60
  61 #include <stdlib.h>
  62 #include <sys/prctl.h>
  63 #include <locale.h>
  64
  65 #define DEFAULT_SEPARATOR       " "
  66 #define CNTR_NOT_SUPPORTED      "<not supported>"
  67 #define CNTR_NOT_COUNTED        "<not counted>"
  68
  69 static void print_stat(int argc, const char **argv);
  70 static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
  71 static void print_counter(struct perf_evsel *counter, char *prefix);
  72 static void print_aggr(char *prefix);
  73
  74 /* Default events used for perf stat -T */
  75 static const char * const transaction_attrs[] = {
  76         "task-clock",
  77         "{"
  78         "instructions,"
  79         "cycles,"
  80         "cpu/cycles-t/,"
  81         "cpu/tx-start/,"
  82         "cpu/el-start/,"
  83         "cpu/cycles-ct/"
  84         "}"
  85 };
  86
  87 /* More limited version when the CPU does not have all events. */
  88 static const char * const transaction_limited_attrs[] = {
  89         "task-clock",
  90         "{"
  91         "instructions,"
  92         "cycles,"
  93         "cpu/cycles-t/,"
  94         "cpu/tx-start/"
  95         "}"
  96 };
  97
  98 /* must match transaction_attrs and the beginning limited_attrs */
  99 enum {
 100         T_TASK_CLOCK,
 101         T_INSTRUCTIONS,
 102         T_CYCLES,
 103         T_CYCLES_IN_TX,
 104         T_TRANSACTION_START,
 105         T_ELISION_START,
 106         T_CYCLES_IN_TX_CP,
 107 };
 108
 109 static struct perf_evlist       *evsel_list;
 110
 111 static struct target target = {
 112         .uid    = UINT_MAX,
 113 };
 114
 115 enum aggr_mode {
 116         AGGR_NONE,
 117         AGGR_GLOBAL,
 118         AGGR_SOCKET,
 119         AGGR_CORE,
 120 };
 121
 122 static int                      run_count                       =  1;
 123 static bool                     no_inherit                      = false;
 124 static bool                     scale                           =  true;
 125 static enum aggr_mode           aggr_mode                       = AGGR_GLOBAL;
 126 static volatile pid_t           child_pid                       = -1;
 127 static bool                     null_run                        =  false;
 128 static int                      detailed_run                    =  0;
 129 static bool                     transaction_run;
 130 static bool                     big_num                         =  true;
 131 static int                      big_num_opt                     =  -1;
 132 static const char               *csv_sep                        = NULL;
 133 static bool                     csv_output                      = false;
 134 static bool                     group                           = false;
 135 static FILE                     *output                         = NULL;
 136 static const char               *pre_cmd                        = NULL;
 137 static const char               *post_cmd                       = NULL;
 138 static bool                     sync_run                        = false;
 139 static unsigned int             interval                        = 0;
 140 static unsigned int             initial_delay                   = 0;
 141 static bool                     forever                         = false;
 142 static struct timespec          ref_time;
 143 static struct cpu_map           *aggr_map;
 144 static int                      (*aggr_get_id)(struct cpu_map *m, int cpu);
 145
 146 static volatile int done = 0;
 147
 148 struct perf_stat {
 149         struct stats      res_stats[3];
 150 };
 151
 152 static inline void diff_timespec(struct timespec *r, struct timespec *a,
 153                                  struct timespec *b)
 154 {
 155         r->tv_sec = a->tv_sec - b->tv_sec;
 156         if (a->tv_nsec < b->tv_nsec) {
 157                 r->tv_nsec = a->tv_nsec + 1000000000L - b->tv_nsec;
 158                 r->tv_sec--;
 159         } else {
 160                 r->tv_nsec = a->tv_nsec - b->tv_nsec ;
 161         }
 162 }
 163
 164 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
 165 {
 166         return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
 167 }
 168
 169 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
 170 {
 171         return perf_evsel__cpus(evsel)->nr;
 172 }
 173
 174 static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
 175 {
 176         memset(evsel->priv, 0, sizeof(struct perf_stat));
 177 }
 178
 179 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
 180 {
 181         evsel->priv = zalloc(sizeof(struct perf_stat));
 182         return evsel->priv == NULL ? -ENOMEM : 0;
 183 }
 184
 185 static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
 186 {
 187         free(evsel->priv);
 188         evsel->priv = NULL;
 189 }
 190
 191 static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
 192 {
 193         void *addr;
 194         size_t sz;
 195
 196         sz = sizeof(*evsel->counts) +
 197              (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
 198
 199         addr = zalloc(sz);
 200         if (!addr)
 201                 return -ENOMEM;
 202
 203         evsel->prev_raw_counts =  addr;
 204
 205         return 0;
 206 }
 207
 208 static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
 209 {
 210         free(evsel->prev_raw_counts);
 211         evsel->prev_raw_counts = NULL;
 212 }
 213
 214 static void perf_evlist__free_stats(struct perf_evlist *evlist)
 215 {
 216         struct perf_evsel *evsel;
 217
 218         list_for_each_entry(evsel, &evlist->entries, node) {
 219                 perf_evsel__free_stat_priv(evsel);
 220                 perf_evsel__free_counts(evsel);
 221                 perf_evsel__free_prev_raw_counts(evsel);
 222         }
 223 }
 224
 225 static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
 226 {
 227         struct perf_evsel *evsel;
 228
 229         list_for_each_entry(evsel, &evlist->entries, node) {
 230                 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
 231                     perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
 232                     (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
 233                         goto out_free;
 234         }
 235
 236         return 0;
 237
 238 out_free:
 239         perf_evlist__free_stats(evlist);
 240         return -1;
 241 }
 242
 243 static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
 244 static struct stats runtime_cycles_stats[MAX_NR_CPUS];
 245 static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
 246 static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
 247 static struct stats runtime_branches_stats[MAX_NR_CPUS];
 248 static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
 249 static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
 250 static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
 251 static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
 252 static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
 253 static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
 254 static struct stats runtime_cycles_in_tx_stats[MAX_NR_CPUS];
 255 static struct stats walltime_nsecs_stats;
 256 static struct stats runtime_transaction_stats[MAX_NR_CPUS];
 257 static struct stats runtime_elision_stats[MAX_NR_CPUS];
 258
 259 static void perf_stat__reset_stats(struct perf_evlist *evlist)
 260 {
 261         struct perf_evsel *evsel;
 262
 263         list_for_each_entry(evsel, &evlist->entries, node) {
 264                 perf_evsel__reset_stat_priv(evsel);
 265                 perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
 266         }
 267
 268         memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
 269         memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
 270         memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
 271         memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
 272         memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
 273         memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
 274         memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
 275         memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
 276         memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
 277         memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
 278         memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
 279         memset(runtime_cycles_in_tx_stats, 0,
 280                         sizeof(runtime_cycles_in_tx_stats));
 281         memset(runtime_transaction_stats, 0,
 282                 sizeof(runtime_transaction_stats));
 283         memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
 284         memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
 285 }
 286
 287 static int create_perf_stat_counter(struct perf_evsel *evsel)
 288 {
 289         struct perf_event_attr *attr = &evsel->attr;
 290
 291         if (scale)
 292                 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
 293                                     PERF_FORMAT_TOTAL_TIME_RUNNING;
 294
 295         attr->inherit = !no_inherit;
 296
 297         if (target__has_cpu(&target))
 298                 return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
 299
 300         if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) {
 301                 attr->disabled = 1;
 302                 if (!initial_delay)
 303                         attr->enable_on_exec = 1;
 304         }
 305
 306         return perf_evsel__open_per_thread(evsel, evsel_list->threads);
 307 }
 308
 309 /*
 310  * Does the counter have nsecs as a unit?
 311  */
 312 static inline int nsec_counter(struct perf_evsel *evsel)
 313 {
 314         if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
 315             perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
 316                 return 1;
 317
 318         return 0;
 319 }
 320
 321 static struct perf_evsel *nth_evsel(int n)
 322 {
 323         static struct perf_evsel **array;
 324         static int array_len;
 325         struct perf_evsel *ev;
 326         int j;
 327
 328         /* Assumes this only called when evsel_list does not change anymore. */
 329         if (!array) {
 330                 list_for_each_entry(ev, &evsel_list->entries, node)
 331                         array_len++;
 332                 array = malloc(array_len * sizeof(void *));
 333                 if (!array)
 334                         exit(ENOMEM);
 335                 j = 0;
 336                 list_for_each_entry(ev, &evsel_list->entries, node)
 337                         array[j++] = ev;
 338         }
 339         if (n < array_len)
 340                 return array[n];
 341         return NULL;
 342 }
 343
 344 /*
 345  * Update various tracking values we maintain to print
 346  * more semantic information such as miss/hit ratios,
 347  * instruction rates, etc:
 348  */
 349 static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
 350 {
 351         if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
 352                 update_stats(&runtime_nsecs_stats[0], count[0]);
 353         else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
 354                 update_stats(&runtime_cycles_stats[0], count[0]);
 355         else if (transaction_run &&
 356                  perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
 357                 update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
 358         else if (transaction_run &&
 359                  perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
 360                 update_stats(&runtime_transaction_stats[0], count[0]);
 361         else if (transaction_run &&
 362                  perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
 363                 update_stats(&runtime_elision_stats[0], count[0]);
 364         else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
 365                 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
 366         else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
 367                 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
 368         else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
 369                 update_stats(&runtime_branches_stats[0], count[0]);
 370         else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
 371                 update_stats(&runtime_cacherefs_stats[0], count[0]);
 372         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
 373                 update_stats(&runtime_l1_dcache_stats[0], count[0]);
 374         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
 375                 update_stats(&runtime_l1_icache_stats[0], count[0]);
 376         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
 377                 update_stats(&runtime_ll_cache_stats[0], count[0]);
 378         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
 379                 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
 380         else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
 381                 update_stats(&runtime_itlb_cache_stats[0], count[0]);
 382 }
 383
 384 /*
 385  * Read out the results of a single counter:
 386  * aggregate counts across CPUs in system-wide mode
 387  */
 388 static int read_counter_aggr(struct perf_evsel *counter)
 389 {
 390         struct perf_stat *ps = counter->priv;
 391         u64 *count = counter->counts->aggr.values;
 392         int i;
 393
 394         if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
 395                                thread_map__nr(evsel_list->threads), scale) < 0)
 396                 return -1;
 397
 398         for (i = 0; i < 3; i++)
 399                 update_stats(&ps->res_stats[i], count[i]);
 400
 401         if (verbose) {
 402                 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
 403                         perf_evsel__name(counter), count[0], count[1], count[2]);
 404         }
 405
 406         /*
 407          * Save the full runtime - to allow normalization during printout:
 408          */
 409         update_shadow_stats(counter, count);
 410
 411         return 0;
 412 }
 413
 414 /*
 415  * Read out the results of a single counter:
 416  * do not aggregate counts across CPUs in system-wide mode
 417  */
 418 static int read_counter(struct perf_evsel *counter)
 419 {
 420         u64 *count;
 421         int cpu;
 422
 423         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
 424                 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
 425                         return -1;
 426
 427                 count = counter->counts->cpu[cpu].values;
 428
 429                 update_shadow_stats(counter, count);
 430         }
 431
 432         return 0;
 433 }
 434
 435 static void print_interval(void)
 436 {
 437         static int num_print_interval;
 438         struct perf_evsel *counter;
 439         struct perf_stat *ps;
 440         struct timespec ts, rs;
 441         char prefix[64];
 442
 443         if (aggr_mode == AGGR_GLOBAL) {
 444                 list_for_each_entry(counter, &evsel_list->entries, node) {
 445                         ps = counter->priv;
 446                         memset(ps->res_stats, 0, sizeof(ps->res_stats));
 447                         read_counter_aggr(counter);
 448                 }
 449         } else  {
 450                 list_for_each_entry(counter, &evsel_list->entries, node) {
 451                         ps = counter->priv;
 452                         memset(ps->res_stats, 0, sizeof(ps->res_stats));
 453                         read_counter(counter);
 454                 }
 455         }
 456
 457         clock_gettime(CLOCK_MONOTONIC, &ts);
 458         diff_timespec(&rs, &ts, &ref_time);
 459         sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
 460
 461         if (num_print_interval == 0 && !csv_output) {
 462                 switch (aggr_mode) {
 463                 case AGGR_SOCKET:
 464                         fprintf(output, "#           time socket cpus             counts events\n");
 465                         break;
 466                 case AGGR_CORE:
 467                         fprintf(output, "#           time core         cpus             counts events\n");
 468                         break;
 469                 case AGGR_NONE:
 470                         fprintf(output, "#           time CPU                 counts events\n");
 471                         break;
 472                 case AGGR_GLOBAL:
 473                 default:
 474                         fprintf(output, "#           time             counts events\n");
 475                 }
 476         }
 477
 478         if (++num_print_interval == 25)
 479                 num_print_interval = 0;
 480
 481         switch (aggr_mode) {
 482         case AGGR_CORE:
 483         case AGGR_SOCKET:
 484                 print_aggr(prefix);
 485                 break;
 486         case AGGR_NONE:
 487                 list_for_each_entry(counter, &evsel_list->entries, node)
 488                         print_counter(counter, prefix);
 489                 break;
 490         case AGGR_GLOBAL:
 491         default:
 492                 list_for_each_entry(counter, &evsel_list->entries, node)
 493                         print_counter_aggr(counter, prefix);
 494         }
 495
 496         fflush(output);
 497 }
 498
 499 static void handle_initial_delay(void)
 500 {
 501         struct perf_evsel *counter;
 502
 503         if (initial_delay) {
 504                 const int ncpus = cpu_map__nr(evsel_list->cpus),
 505                         nthreads = thread_map__nr(evsel_list->threads);
 506
 507                 usleep(initial_delay * 1000);
 508                 list_for_each_entry(counter, &evsel_list->entries, node)
 509                         perf_evsel__enable(counter, ncpus, nthreads);
 510         }
 511 }
 512
 513 static int __run_perf_stat(int argc, const char **argv)
 514 {
 515         char msg[512];
 516         unsigned long long t0, t1;
 517         struct perf_evsel *counter;
 518         struct timespec ts;
 519         int status = 0;
 520         const bool forks = (argc > 0);
 521
 522         if (interval) {
 523                 ts.tv_sec  = interval / 1000;
 524                 ts.tv_nsec = (interval % 1000) * 1000000;
 525         } else {
 526                 ts.tv_sec  = 1;
 527                 ts.tv_nsec = 0;
 528         }
 529
 530         if (forks) {
 531                 if (perf_evlist__prepare_workload(evsel_list, &target, argv,
 532                                                   false, false) < 0) {
 533                         perror("failed to prepare workload");
 534                         return -1;
 535                 }
 536                 child_pid = evsel_list->workload.pid;
 537         }
 538
 539         if (group)
 540                 perf_evlist__set_leader(evsel_list);
 541
 542         list_for_each_entry(counter, &evsel_list->entries, node) {
 543                 if (create_perf_stat_counter(counter) < 0) {
 544                         /*
 545                          * PPC returns ENXIO for HW counters until 2.6.37
 546                          * (behavior changed with commit b0a873e).
 547                          */
 548                         if (errno == EINVAL || errno == ENOSYS ||
 549                             errno == ENOENT || errno == EOPNOTSUPP ||
 550                             errno == ENXIO) {
 551                                 if (verbose)
 552                                         ui__warning("%s event is not supported by the kernel.\n",
 553                                                     perf_evsel__name(counter));
 554                                 counter->supported = false;
 555                                 continue;
 556                         }
 557
 558                         perf_evsel__open_strerror(counter, &target,
 559                                                   errno, msg, sizeof(msg));
 560                         ui__error("%s\n", msg);
 561
 562                         if (child_pid != -1)
 563                                 kill(child_pid, SIGTERM);
 564
 565                         return -1;
 566                 }
 567                 counter->supported = true;
 568         }
 569
 570         if (perf_evlist__apply_filters(evsel_list)) {
 571                 error("failed to set filter with %d (%s)\n", errno,
 572                         strerror(errno));
 573                 return -1;
 574         }
 575
 576         /*
 577          * Enable counters and exec the command:
 578          */
 579         t0 = rdclock();
 580         clock_gettime(CLOCK_MONOTONIC, &ref_time);
 581
 582         if (forks) {
 583                 perf_evlist__start_workload(evsel_list);
 584                 handle_initial_delay();
 585
 586                 if (interval) {
 587                         while (!waitpid(child_pid, &status, WNOHANG)) {
 588                                 nanosleep(&ts, NULL);
 589                                 print_interval();
 590                         }
 591                 }
 592                 wait(&status);
 593                 if (WIFSIGNALED(status))
 594                         psignal(WTERMSIG(status), argv[0]);
 595         } else {
 596                 handle_initial_delay();
 597                 while (!done) {
 598                         nanosleep(&ts, NULL);
 599                         if (interval)
 600                                 print_interval();
 601                 }
 602         }
 603
 604         t1 = rdclock();
 605
 606         update_stats(&walltime_nsecs_stats, t1 - t0);
 607
 608         if (aggr_mode == AGGR_GLOBAL) {
 609                 list_for_each_entry(counter, &evsel_list->entries, node) {
 610                         read_counter_aggr(counter);
 611                         perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
 612                                              thread_map__nr(evsel_list->threads));
 613                 }
 614         } else {
 615                 list_for_each_entry(counter, &evsel_list->entries, node) {
 616                         read_counter(counter);
 617                         perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
 618                 }
 619         }
 620
 621         return WEXITSTATUS(status);
 622 }
 623
 624 static int run_perf_stat(int argc __maybe_unused, const char **argv)
 625 {
 626         int ret;
 627
 628         if (pre_cmd) {
 629                 ret = system(pre_cmd);
 630                 if (ret)
 631                         return ret;
 632         }
 633
 634         if (sync_run)
 635                 sync();
 636
 637         ret = __run_perf_stat(argc, argv);
 638         if (ret)
 639                 return ret;
 640
 641         if (post_cmd) {
 642                 ret = system(post_cmd);
 643                 if (ret)
 644                         return ret;
 645         }
 646
 647         return ret;
 648 }
 649
 650 static void print_noise_pct(double total, double avg)
 651 {
 652         double pct = rel_stddev_stats(total, avg);
 653
 654         if (csv_output)
 655                 fprintf(output, "%s%.2f%%", csv_sep, pct);
 656         else if (pct)
 657                 fprintf(output, "  ( +-%6.2f%% )", pct);
 658 }
 659
 660 static void print_noise(struct perf_evsel *evsel, double avg)
 661 {
 662         struct perf_stat *ps;
 663
 664         if (run_count == 1)
 665                 return;
 666
 667         ps = evsel->priv;
 668         print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
 669 }
 670
 671 static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
 672 {
 673         switch (aggr_mode) {
 674         case AGGR_CORE:
 675                 fprintf(output, "S%d-C%*d%s%*d%s",
 676                         cpu_map__id_to_socket(id),
 677                         csv_output ? 0 : -8,
 678                         cpu_map__id_to_cpu(id),
 679                         csv_sep,
 680                         csv_output ? 0 : 4,
 681                         nr,
 682                         csv_sep);
 683                 break;
 684         case AGGR_SOCKET:
 685                 fprintf(output, "S%*d%s%*d%s",
 686                         csv_output ? 0 : -5,
 687                         id,
 688                         csv_sep,
 689                         csv_output ? 0 : 4,
 690                         nr,
 691                         csv_sep);
 692                         break;
 693         case AGGR_NONE:
 694                 fprintf(output, "CPU%*d%s",
 695                         csv_output ? 0 : -4,
 696                         perf_evsel__cpus(evsel)->map[id], csv_sep);
 697                 break;
 698         case AGGR_GLOBAL:
 699         default:
 700                 break;
 701         }
 702 }
 703
 704 static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 705 {
 706         double msecs = avg / 1e6;
 707         const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
 708         char name[25];
 709
 710         aggr_printout(evsel, cpu, nr);
 711
 712         scnprintf(name, sizeof(name), "%s%s",
 713                   perf_evsel__name(evsel), csv_output ? "" : " (msec)");
 714         fprintf(output, fmt, msecs, csv_sep, name);
 715
 716         if (evsel->cgrp)
 717                 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 718
 719         if (csv_output || interval)
 720                 return;
 721
 722         if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
 723                 fprintf(output, " # %8.3f CPUs utilized          ",
 724                         avg / avg_stats(&walltime_nsecs_stats));
 725         else
 726                 fprintf(output, "                                   ");
 727 }
 728
 729 /* used for get_ratio_color() */
 730 enum grc_type {
 731         GRC_STALLED_CYCLES_FE,
 732         GRC_STALLED_CYCLES_BE,
 733         GRC_CACHE_MISSES,
 734         GRC_MAX_NR
 735 };
 736
 737 static const char *get_ratio_color(enum grc_type type, double ratio)
 738 {
 739         static const double grc_table[GRC_MAX_NR][3] = {
 740                 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
 741                 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
 742                 [GRC_CACHE_MISSES]      = { 20.0, 10.0, 5.0 },
 743         };
 744         const char *color = PERF_COLOR_NORMAL;
 745
 746         if (ratio > grc_table[type][0])
 747                 color = PERF_COLOR_RED;
 748         else if (ratio > grc_table[type][1])
 749                 color = PERF_COLOR_MAGENTA;
 750         else if (ratio > grc_table[type][2])
 751                 color = PERF_COLOR_YELLOW;
 752
 753         return color;
 754 }
 755
 756 static void print_stalled_cycles_frontend(int cpu,
 757                                           struct perf_evsel *evsel
 758                                           __maybe_unused, double avg)
 759 {
 760         double total, ratio = 0.0;
 761         const char *color;
 762
 763         total = avg_stats(&runtime_cycles_stats[cpu]);
 764
 765         if (total)
 766                 ratio = avg / total * 100.0;
 767
 768         color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
 769
 770         fprintf(output, " #  ");
 771         color_fprintf(output, color, "%6.2f%%", ratio);
 772         fprintf(output, " frontend cycles idle   ");
 773 }
 774
 775 static void print_stalled_cycles_backend(int cpu,
 776                                          struct perf_evsel *evsel
 777                                          __maybe_unused, double avg)
 778 {
 779         double total, ratio = 0.0;
 780         const char *color;
 781
 782         total = avg_stats(&runtime_cycles_stats[cpu]);
 783
 784         if (total)
 785                 ratio = avg / total * 100.0;
 786
 787         color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
 788
 789         fprintf(output, " #  ");
 790         color_fprintf(output, color, "%6.2f%%", ratio);
 791         fprintf(output, " backend  cycles idle   ");
 792 }
 793
 794 static void print_branch_misses(int cpu,
 795                                 struct perf_evsel *evsel __maybe_unused,
 796                                 double avg)
 797 {
 798         double total, ratio = 0.0;
 799         const char *color;
 800
 801         total = avg_stats(&runtime_branches_stats[cpu]);
 802
 803         if (total)
 804                 ratio = avg / total * 100.0;
 805
 806         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 807
 808         fprintf(output, " #  ");
 809         color_fprintf(output, color, "%6.2f%%", ratio);
 810         fprintf(output, " of all branches        ");
 811 }
 812
 813 static void print_l1_dcache_misses(int cpu,
 814                                    struct perf_evsel *evsel __maybe_unused,
 815                                    double avg)
 816 {
 817         double total, ratio = 0.0;
 818         const char *color;
 819
 820         total = avg_stats(&runtime_l1_dcache_stats[cpu]);
 821
 822         if (total)
 823                 ratio = avg / total * 100.0;
 824
 825         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 826
 827         fprintf(output, " #  ");
 828         color_fprintf(output, color, "%6.2f%%", ratio);
 829         fprintf(output, " of all L1-dcache hits  ");
 830 }
 831
 832 static void print_l1_icache_misses(int cpu,
 833                                    struct perf_evsel *evsel __maybe_unused,
 834                                    double avg)
 835 {
 836         double total, ratio = 0.0;
 837         const char *color;
 838
 839         total = avg_stats(&runtime_l1_icache_stats[cpu]);
 840
 841         if (total)
 842                 ratio = avg / total * 100.0;
 843
 844         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 845
 846         fprintf(output, " #  ");
 847         color_fprintf(output, color, "%6.2f%%", ratio);
 848         fprintf(output, " of all L1-icache hits  ");
 849 }
 850
 851 static void print_dtlb_cache_misses(int cpu,
 852                                     struct perf_evsel *evsel __maybe_unused,
 853                                     double avg)
 854 {
 855         double total, ratio = 0.0;
 856         const char *color;
 857
 858         total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
 859
 860         if (total)
 861                 ratio = avg / total * 100.0;
 862
 863         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 864
 865         fprintf(output, " #  ");
 866         color_fprintf(output, color, "%6.2f%%", ratio);
 867         fprintf(output, " of all dTLB cache hits ");
 868 }
 869
 870 static void print_itlb_cache_misses(int cpu,
 871                                     struct perf_evsel *evsel __maybe_unused,
 872                                     double avg)
 873 {
 874         double total, ratio = 0.0;
 875         const char *color;
 876
 877         total = avg_stats(&runtime_itlb_cache_stats[cpu]);
 878
 879         if (total)
 880                 ratio = avg / total * 100.0;
 881
 882         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 883
 884         fprintf(output, " #  ");
 885         color_fprintf(output, color, "%6.2f%%", ratio);
 886         fprintf(output, " of all iTLB cache hits ");
 887 }
 888
 889 static void print_ll_cache_misses(int cpu,
 890                                   struct perf_evsel *evsel __maybe_unused,
 891                                   double avg)
 892 {
 893         double total, ratio = 0.0;
 894         const char *color;
 895
 896         total = avg_stats(&runtime_ll_cache_stats[cpu]);
 897
 898         if (total)
 899                 ratio = avg / total * 100.0;
 900
 901         color = get_ratio_color(GRC_CACHE_MISSES, ratio);
 902
 903         fprintf(output, " #  ");
 904         color_fprintf(output, color, "%6.2f%%", ratio);
 905         fprintf(output, " of all LL-cache hits   ");
 906 }
 907
 908 static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
 909 {
 910         double total, ratio = 0.0, total2;
 911         const char *fmt;
 912
 913         if (csv_output)
 914                 fmt = "%.0f%s%s";
 915         else if (big_num)
 916                 fmt = "%'18.0f%s%-25s";
 917         else
 918                 fmt = "%18.0f%s%-25s";
 919
 920         aggr_printout(evsel, cpu, nr);
 921
 922         if (aggr_mode == AGGR_GLOBAL)
 923                 cpu = 0;
 924
 925         fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
 926
 927         if (evsel->cgrp)
 928                 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
 929
 930         if (csv_output || interval)
 931                 return;
 932
 933         if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
 934                 total = avg_stats(&runtime_cycles_stats[cpu]);
 935                 if (total) {
 936                         ratio = avg / total;
 937                         fprintf(output, " #   %5.2f  insns per cycle        ", ratio);
 938                 }
 939                 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
 940                 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
 941
 942                 if (total && avg) {
 943                         ratio = total / avg;
 944                         fprintf(output, "\n                                             #   %5.2f  stalled cycles per insn", ratio);
 945                 }
 946
 947         } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
 948                         runtime_branches_stats[cpu].n != 0) {
 949                 print_branch_misses(cpu, evsel, avg);
 950         } else if (
 951                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 952                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1D |
 953                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 954                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 955                         runtime_l1_dcache_stats[cpu].n != 0) {
 956                 print_l1_dcache_misses(cpu, evsel, avg);
 957         } else if (
 958                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 959                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1I |
 960                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 961                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 962                         runtime_l1_icache_stats[cpu].n != 0) {
 963                 print_l1_icache_misses(cpu, evsel, avg);
 964         } else if (
 965                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 966                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_DTLB |
 967                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 968                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 969                         runtime_dtlb_cache_stats[cpu].n != 0) {
 970                 print_dtlb_cache_misses(cpu, evsel, avg);
 971         } else if (
 972                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 973                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_ITLB |
 974                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 975                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 976                         runtime_itlb_cache_stats[cpu].n != 0) {
 977                 print_itlb_cache_misses(cpu, evsel, avg);
 978         } else if (
 979                 evsel->attr.type == PERF_TYPE_HW_CACHE &&
 980                 evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_LL |
 981                                         ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
 982                                         ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
 983                         runtime_ll_cache_stats[cpu].n != 0) {
 984                 print_ll_cache_misses(cpu, evsel, avg);
 985         } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
 986                         runtime_cacherefs_stats[cpu].n != 0) {
 987                 total = avg_stats(&runtime_cacherefs_stats[cpu]);
 988
 989                 if (total)
 990                         ratio = avg * 100 / total;
 991
 992                 fprintf(output, " # %8.3f %% of all cache refs    ", ratio);
 993
 994         } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
 995                 print_stalled_cycles_frontend(cpu, evsel, avg);
 996         } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
 997                 print_stalled_cycles_backend(cpu, evsel, avg);
 998         } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
 999                 total = avg_stats(&runtime_nsecs_stats[cpu]);
1000
1001                 if (total) {
1002                         ratio = avg / total;
1003                         fprintf(output, " # %8.3f GHz                    ", ratio);
1004                 }
1005         } else if (transaction_run &&
1006                    perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
1007                 total = avg_stats(&runtime_cycles_stats[cpu]);
1008                 if (total)
1009                         fprintf(output,
1010                                 " #   %5.2f%% transactional cycles   ",
1011                                 100.0 * (avg / total));
1012         } else if (transaction_run &&
1013                    perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
1014                 total = avg_stats(&runtime_cycles_stats[cpu]);
1015                 total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1016                 if (total2 < avg)
1017                         total2 = avg;
1018                 if (total)
1019                         fprintf(output,
1020                                 " #   %5.2f%% aborted cycles         ",
1021                                 100.0 * ((total2-avg) / total));
1022         } else if (transaction_run &&
1023                    perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
1024                    avg > 0 &&
1025                    runtime_cycles_in_tx_stats[cpu].n != 0) {
1026                 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1027
1028                 if (total)
1029                         ratio = total / avg;
1030
1031                 fprintf(output, " # %8.0f cycles / transaction   ", ratio);
1032         } else if (transaction_run &&
1033                    perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
1034                    avg > 0 &&
1035                    runtime_cycles_in_tx_stats[cpu].n != 0) {
1036                 total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
1037
1038                 if (total)
1039                         ratio = total / avg;
1040
1041                 fprintf(output, " # %8.0f cycles / elision       ", ratio);
1042         } else if (runtime_nsecs_stats[cpu].n != 0) {
1043                 char unit = 'M';
1044
1045                 total = avg_stats(&runtime_nsecs_stats[cpu]);
1046
1047                 if (total)
1048                         ratio = 1000.0 * avg / total;
1049                 if (ratio < 0.001) {
1050                         ratio *= 1000;
1051                         unit = 'K';
1052                 }
1053
1054                 fprintf(output, " # %8.3f %c/sec                  ", ratio, unit);
1055         } else {
1056                 fprintf(output, "                                   ");
1057         }
1058 }
1059
1060 static void print_aggr(char *prefix)
1061 {
1062         struct perf_evsel *counter;
1063         int cpu, cpu2, s, s2, id, nr;
1064         u64 ena, run, val;
1065
1066         if (!(aggr_map || aggr_get_id))
1067                 return;
1068
1069         for (s = 0; s < aggr_map->nr; s++) {
1070                 id = aggr_map->map[s];
1071                 list_for_each_entry(counter, &evsel_list->entries, node) {
1072                         val = ena = run = 0;
1073                         nr = 0;
1074                         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1075                                 cpu2 = perf_evsel__cpus(counter)->map[cpu];
1076                                 s2 = aggr_get_id(evsel_list->cpus, cpu2);
1077                                 if (s2 != id)
1078                                         continue;
1079                                 val += counter->counts->cpu[cpu].val;
1080                                 ena += counter->counts->cpu[cpu].ena;
1081                                 run += counter->counts->cpu[cpu].run;
1082                                 nr++;
1083                         }
1084                         if (prefix)
1085                                 fprintf(output, "%s", prefix);
1086
1087                         if (run == 0 || ena == 0) {
1088                                 aggr_printout(counter, id, nr);
1089
1090                                 fprintf(output, "%*s%s%*s",
1091                                         csv_output ? 0 : 18,
1092                                         counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1093                                         csv_sep,
1094                                         csv_output ? 0 : -24,
1095                                         perf_evsel__name(counter));
1096
1097                                 if (counter->cgrp)
1098                                         fprintf(output, "%s%s",
1099                                                 csv_sep, counter->cgrp->name);
1100
1101                                 fputc('\n', output);
1102                                 continue;
1103                         }
1104
1105                         if (nsec_counter(counter))
1106                                 nsec_printout(id, nr, counter, val);
1107                         else
1108                                 abs_printout(id, nr, counter, val);
1109
1110                         if (!csv_output) {
1111                                 print_noise(counter, 1.0);
1112
1113                                 if (run != ena)
1114                                         fprintf(output, "  (%.2f%%)",
1115                                                 100.0 * run / ena);
1116                         }
1117                         fputc('\n', output);
1118                 }
1119         }
1120 }
1121
1122 /*
1123  * Print out the results of a single counter:
1124  * aggregated counts in system-wide mode
1125  */
1126 static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
1127 {
1128         struct perf_stat *ps = counter->priv;
1129         double avg = avg_stats(&ps->res_stats[0]);
1130         int scaled = counter->counts->scaled;
1131
1132         if (prefix)
1133                 fprintf(output, "%s", prefix);
1134
1135         if (scaled == -1) {
1136                 fprintf(output, "%*s%s%*s",
1137                         csv_output ? 0 : 18,
1138                         counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1139                         csv_sep,
1140                         csv_output ? 0 : -24,
1141                         perf_evsel__name(counter));
1142
1143                 if (counter->cgrp)
1144                         fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
1145
1146                 fputc('\n', output);
1147                 return;
1148         }
1149
1150         if (nsec_counter(counter))
1151                 nsec_printout(-1, 0, counter, avg);
1152         else
1153                 abs_printout(-1, 0, counter, avg);
1154
1155         print_noise(counter, avg);
1156
1157         if (csv_output) {
1158                 fputc('\n', output);
1159                 return;
1160         }
1161
1162         if (scaled) {
1163                 double avg_enabled, avg_running;
1164
1165                 avg_enabled = avg_stats(&ps->res_stats[1]);
1166                 avg_running = avg_stats(&ps->res_stats[2]);
1167
1168                 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
1169         }
1170         fprintf(output, "\n");
1171 }
1172
1173 /*
1174  * Print out the results of a single counter:
1175  * does not use aggregated count in system-wide
1176  */
1177 static void print_counter(struct perf_evsel *counter, char *prefix)
1178 {
1179         u64 ena, run, val;
1180         int cpu;
1181
1182         for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
1183                 val = counter->counts->cpu[cpu].val;
1184                 ena = counter->counts->cpu[cpu].ena;
1185                 run = counter->counts->cpu[cpu].run;
1186
1187                 if (prefix)
1188                         fprintf(output, "%s", prefix);
1189
1190                 if (run == 0 || ena == 0) {
1191                         fprintf(output, "CPU%*d%s%*s%s%*s",
1192                                 csv_output ? 0 : -4,
1193                                 perf_evsel__cpus(counter)->map[cpu], csv_sep,
1194                                 csv_output ? 0 : 18,
1195                                 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
1196                                 csv_sep,
1197                                 csv_output ? 0 : -24,
1198                                 perf_evsel__name(counter));
1199
1200                         if (counter->cgrp)
1201                                 fprintf(output, "%s%s",
1202                                         csv_sep, counter->cgrp->name);
1203
1204                         fputc('\n', output);
1205                         continue;
1206                 }
1207
1208                 if (nsec_counter(counter))
1209                         nsec_printout(cpu, 0, counter, val);
1210                 else
1211                         abs_printout(cpu, 0, counter, val);
1212
1213                 if (!csv_output) {
1214                         print_noise(counter, 1.0);
1215
1216                         if (run != ena)
1217                                 fprintf(output, "  (%.2f%%)",
1218                                         100.0 * run / ena);
1219                 }
1220                 fputc('\n', output);
1221         }
1222 }
1223
1224 static void print_stat(int argc, const char **argv)
1225 {
1226         struct perf_evsel *counter;
1227         int i;
1228
1229         fflush(stdout);
1230
1231         if (!csv_output) {
1232                 fprintf(output, "\n");
1233                 fprintf(output, " Performance counter stats for ");
1234                 if (target.system_wide)
1235                         fprintf(output, "\'system wide");
1236                 else if (target.cpu_list)
1237                         fprintf(output, "\'CPU(s) %s", target.cpu_list);
1238                 else if (!target__has_task(&target)) {
1239                         fprintf(output, "\'%s", argv[0]);
1240                         for (i = 1; i < argc; i++)
1241                                 fprintf(output, " %s", argv[i]);
1242                 } else if (target.pid)
1243                         fprintf(output, "process id \'%s", target.pid);
1244                 else
1245                         fprintf(output, "thread id \'%s", target.tid);
1246
1247                 fprintf(output, "\'");
1248                 if (run_count > 1)
1249                         fprintf(output, " (%d runs)", run_count);
1250                 fprintf(output, ":\n\n");
1251         }
1252
1253         switch (aggr_mode) {
1254         case AGGR_CORE:
1255         case AGGR_SOCKET:
1256                 print_aggr(NULL);
1257                 break;
1258         case AGGR_GLOBAL:
1259                 list_for_each_entry(counter, &evsel_list->entries, node)
1260                         print_counter_aggr(counter, NULL);
1261                 break;
1262         case AGGR_NONE:
1263                 list_for_each_entry(counter, &evsel_list->entries, node)
1264                         print_counter(counter, NULL);
1265                 break;
1266         default:
1267                 break;
1268         }
1269
1270         if (!csv_output) {
1271                 if (!null_run)
1272                         fprintf(output, "\n");
1273                 fprintf(output, " %17.9f seconds time elapsed",
1274                                 avg_stats(&walltime_nsecs_stats)/1e9);
1275                 if (run_count > 1) {
1276                         fprintf(output, "                                        ");
1277                         print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1278                                         avg_stats(&walltime_nsecs_stats));
1279                 }
1280                 fprintf(output, "\n\n");
1281         }
1282 }
1283
1284 static volatile int signr = -1;
1285
1286 static void skip_signal(int signo)
1287 {
1288         if ((child_pid == -1) || interval)
1289                 done = 1;
1290
1291         signr = signo;
1292         /*
1293          * render child_pid harmless
1294          * won't send SIGTERM to a random
1295          * process in case of race condition
1296          * and fast PID recycling
1297          */
1298         child_pid = -1;
1299 }
1300
1301 static void sig_atexit(void)
1302 {
1303         sigset_t set, oset;
1304
1305         /*
1306          * avoid race condition with SIGCHLD handler
1307          * in skip_signal() which is modifying child_pid
1308          * goal is to avoid send SIGTERM to a random
1309          * process
1310          */
1311         sigemptyset(&set);
1312         sigaddset(&set, SIGCHLD);
1313         sigprocmask(SIG_BLOCK, &set, &oset);
1314
1315         if (child_pid != -1)
1316                 kill(child_pid, SIGTERM);
1317
1318         sigprocmask(SIG_SETMASK, &oset, NULL);
1319
1320         if (signr == -1)
1321                 return;
1322
1323         signal(signr, SIG_DFL);
1324         kill(getpid(), signr);
1325 }
1326
1327 static int stat__set_big_num(const struct option *opt __maybe_unused,
1328                              const char *s __maybe_unused, int unset)
1329 {
1330         big_num_opt = unset ? 0 : 1;
1331         return 0;
1332 }
1333
1334 static int perf_stat_init_aggr_mode(void)
1335 {
1336         switch (aggr_mode) {
1337         case AGGR_SOCKET:
1338                 if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
1339                         perror("cannot build socket map");
1340                         return -1;
1341                 }
1342                 aggr_get_id = cpu_map__get_socket;
1343                 break;
1344         case AGGR_CORE:
1345                 if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
1346                         perror("cannot build core map");
1347                         return -1;
1348                 }
1349                 aggr_get_id = cpu_map__get_core;
1350                 break;
1351         case AGGR_NONE:
1352         case AGGR_GLOBAL:
1353         default:
1354                 break;
1355         }
1356         return 0;
1357 }
1358
1359 static int setup_events(const char * const *attrs, unsigned len)
1360 {
1361         unsigned i;
1362
1363         for (i = 0; i < len; i++) {
1364                 if (parse_events(evsel_list, attrs[i]))
1365                         return -1;
1366         }
1367         return 0;
1368 }
1369
1370 /*
1371  * Add default attributes, if there were no attributes specified or
1372  * if -d/--detailed, -d -d or -d -d -d is used:
1373  */
1374 static int add_default_attributes(void)
1375 {
1376         struct perf_event_attr default_attrs[] = {
1377
1378   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK              },
1379   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES        },
1380   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS          },
1381   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS             },
1382
1383   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES              },
1384   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
1385   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND  },
1386   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS            },
1387   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS     },
1388   { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES           },
1389
1390 };
1391
1392 /*
1393  * Detailed stats (-d), covering the L1 and last level data caches:
1394  */
1395         struct perf_event_attr detailed_attrs[] = {
1396
1397   { .type = PERF_TYPE_HW_CACHE,
1398     .config =
1399          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1400         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1401         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1402
1403   { .type = PERF_TYPE_HW_CACHE,
1404     .config =
1405          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1406         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1407         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1408
1409   { .type = PERF_TYPE_HW_CACHE,
1410     .config =
1411          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1412         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1413         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1414
1415   { .type = PERF_TYPE_HW_CACHE,
1416     .config =
1417          PERF_COUNT_HW_CACHE_LL                 <<  0  |
1418         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1419         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1420 };
1421
1422 /*
1423  * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
1424  */
1425         struct perf_event_attr very_detailed_attrs[] = {
1426
1427   { .type = PERF_TYPE_HW_CACHE,
1428     .config =
1429          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1430         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1431         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1432
1433   { .type = PERF_TYPE_HW_CACHE,
1434     .config =
1435          PERF_COUNT_HW_CACHE_L1I                <<  0  |
1436         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1437         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1438
1439   { .type = PERF_TYPE_HW_CACHE,
1440     .config =
1441          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1442         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1443         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1444
1445   { .type = PERF_TYPE_HW_CACHE,
1446     .config =
1447          PERF_COUNT_HW_CACHE_DTLB               <<  0  |
1448         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1449         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1450
1451   { .type = PERF_TYPE_HW_CACHE,
1452     .config =
1453          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1454         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1455         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1456
1457   { .type = PERF_TYPE_HW_CACHE,
1458     .config =
1459          PERF_COUNT_HW_CACHE_ITLB               <<  0  |
1460         (PERF_COUNT_HW_CACHE_OP_READ            <<  8) |
1461         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1462
1463 };
1464
1465 /*
1466  * Very, very detailed stats (-d -d -d), adding prefetch events:
1467  */
1468         struct perf_event_attr very_very_detailed_attrs[] = {
1469
1470   { .type = PERF_TYPE_HW_CACHE,
1471     .config =
1472          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1473         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1474         (PERF_COUNT_HW_CACHE_RESULT_ACCESS      << 16)                          },
1475
1476   { .type = PERF_TYPE_HW_CACHE,
1477     .config =
1478          PERF_COUNT_HW_CACHE_L1D                <<  0  |
1479         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
1480         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
1481 };
1482
1483         /* Set attrs if no event is selected and !null_run: */
1484         if (null_run)
1485                 return 0;
1486
1487         if (transaction_run) {
1488                 int err;
1489                 if (pmu_have_event("cpu", "cycles-ct") &&
1490                     pmu_have_event("cpu", "el-start"))
1491                         err = setup_events(transaction_attrs,
1492                                         ARRAY_SIZE(transaction_attrs));
1493                 else
1494                         err = setup_events(transaction_limited_attrs,
1495                                  ARRAY_SIZE(transaction_limited_attrs));
1496                 if (err < 0) {
1497                         fprintf(stderr, "Cannot set up transaction events\n");
1498                         return -1;
1499                 }
1500                 return 0;
1501         }
1502
1503         if (!evsel_list->nr_entries) {
1504                 if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
1505                         return -1;
1506         }
1507
1508         /* Detailed events get appended to the event list: */
1509
1510         if (detailed_run <  1)
1511                 return 0;
1512
1513         /* Append detailed run extra attributes: */
1514         if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
1515                 return -1;
1516
1517         if (detailed_run < 2)
1518                 return 0;
1519
1520         /* Append very detailed run extra attributes: */
1521         if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
1522                 return -1;
1523
1524         if (detailed_run < 3)
1525                 return 0;
1526
1527         /* Append very, very detailed run extra attributes: */
1528         return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
1529 }
1530
1531 int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
1532 {
1533         bool append_file = false;
1534         int output_fd = 0;
1535         const char *output_name = NULL;
1536         const struct option options[] = {
1537         OPT_BOOLEAN('T', "transaction", &transaction_run,
1538                     "hardware transaction statistics"),
1539         OPT_CALLBACK('e', "event", &evsel_list, "event",
1540                      "event selector. use 'perf list' to list available events",
1541                      parse_events_option),
1542         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1543                      "event filter", parse_filter),
1544         OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1545                     "child tasks do not inherit counters"),
1546         OPT_STRING('p', "pid", &target.pid, "pid",
1547                    "stat events on existing process id"),
1548         OPT_STRING('t', "tid", &target.tid, "tid",
1549                    "stat events on existing thread id"),
1550         OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
1551                     "system-wide collection from all CPUs"),
1552         OPT_BOOLEAN('g', "group", &group,
1553                     "put the counters into a counter group"),
1554         OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
1555         OPT_INCR('v', "verbose", &verbose,
1556                     "be more verbose (show counter open errors, etc)"),
1557         OPT_INTEGER('r', "repeat", &run_count,
1558                     "repeat command and print average + stddev (max: 100, forever: 0)"),
1559         OPT_BOOLEAN('n', "null", &null_run,
1560                     "null run - dont start any counters"),
1561         OPT_INCR('d', "detailed", &detailed_run,
1562                     "detailed run - start a lot of events"),
1563         OPT_BOOLEAN('S', "sync", &sync_run,
1564                     "call sync() before starting a run"),
1565         OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1566                            "print large numbers with thousands\' separators",
1567                            stat__set_big_num),
1568         OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
1569                     "list of cpus to monitor in system-wide"),
1570         OPT_SET_UINT('A', "no-aggr", &aggr_mode,
1571                     "disable CPU count aggregation", AGGR_NONE),
1572         OPT_STRING('x', "field-separator", &csv_sep, "separator",
1573                    "print counts with custom separator"),
1574         OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1575                      "monitor event in cgroup name only", parse_cgroups),
1576         OPT_STRING('o', "output", &output_name, "file", "output file name"),
1577         OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
1578         OPT_INTEGER(0, "log-fd", &output_fd,
1579                     "log output to fd, instead of stderr"),
1580         OPT_STRING(0, "pre", &pre_cmd, "command",
1581                         "command to run prior to the measured command"),
1582         OPT_STRING(0, "post", &post_cmd, "command",
1583                         "command to run after to the measured command"),
1584         OPT_UINTEGER('I', "interval-print", &interval,
1585                     "print counts at regular interval in ms (>= 100)"),
1586         OPT_SET_UINT(0, "per-socket", &aggr_mode,
1587                      "aggregate counts per processor socket", AGGR_SOCKET),
1588         OPT_SET_UINT(0, "per-core", &aggr_mode,
1589                      "aggregate counts per physical processor core", AGGR_CORE),
1590         OPT_UINTEGER('D', "delay", &initial_delay,
1591                      "ms to wait before starting measurement after program start"),
1592         OPT_END()
1593         };
1594         const char * const stat_usage[] = {
1595                 "perf stat [<options>] [<command>]",
1596                 NULL
1597         };
1598         int status = -EINVAL, run_idx;
1599         const char *mode;
1600
1601         setlocale(LC_ALL, "");
1602
1603         evsel_list = perf_evlist__new();
1604         if (evsel_list == NULL)
1605                 return -ENOMEM;
1606
1607         argc = parse_options(argc, argv, options, stat_usage,
1608                 PARSE_OPT_STOP_AT_NON_OPTION);
1609
1610         output = stderr;
1611         if (output_name && strcmp(output_name, "-"))
1612                 output = NULL;
1613
1614         if (output_name && output_fd) {
1615                 fprintf(stderr, "cannot use both --output and --log-fd\n");
1616                 parse_options_usage(stat_usage, options, "o", 1);
1617                 parse_options_usage(NULL, options, "log-fd", 0);
1618                 goto out;
1619         }
1620
1621         if (output_fd < 0) {
1622                 fprintf(stderr, "argument to --log-fd must be a > 0\n");
1623                 parse_options_usage(stat_usage, options, "log-fd", 0);
1624                 goto out;
1625         }
1626
1627         if (!output) {
1628                 struct timespec tm;
1629                 mode = append_file ? "a" : "w";
1630
1631                 output = fopen(output_name, mode);
1632                 if (!output) {
1633                         perror("failed to create output file");
1634                         return -1;
1635                 }
1636                 clock_gettime(CLOCK_REALTIME, &tm);
1637                 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
1638         } else if (output_fd > 0) {
1639                 mode = append_file ? "a" : "w";
1640                 output = fdopen(output_fd, mode);
1641                 if (!output) {
1642                         perror("Failed opening logfd");
1643                         return -errno;
1644                 }
1645         }
1646
1647         if (csv_sep) {
1648                 csv_output = true;
1649                 if (!strcmp(csv_sep, "\\t"))
1650                         csv_sep = "\t";
1651         } else
1652                 csv_sep = DEFAULT_SEPARATOR;
1653
1654         /*
1655          * let the spreadsheet do the pretty-printing
1656          */
1657         if (csv_output) {
1658                 /* User explicitly passed -B? */
1659                 if (big_num_opt == 1) {
1660                         fprintf(stderr, "-B option not supported with -x\n");
1661                         parse_options_usage(stat_usage, options, "B", 1);
1662                         parse_options_usage(NULL, options, "x", 1);
1663                         goto out;
1664                 } else /* Nope, so disable big number formatting */
1665                         big_num = false;
1666         } else if (big_num_opt == 0) /* User passed --no-big-num */
1667                 big_num = false;
1668
1669         if (!argc && target__none(&target))
1670                 usage_with_options(stat_usage, options);
1671
1672         if (run_count < 0) {
1673                 pr_err("Run count must be a positive number\n");
1674                 parse_options_usage(stat_usage, options, "r", 1);
1675                 goto out;
1676         } else if (run_count == 0) {
1677                 forever = true;
1678                 run_count = 1;
1679         }
1680
1681         /* no_aggr, cgroup are for system-wide only */
1682         if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
1683             !target__has_cpu(&target)) {
1684                 fprintf(stderr, "both cgroup and no-aggregation "
1685                         "modes only available in system-wide mode\n");
1686
1687                 parse_options_usage(stat_usage, options, "G", 1);
1688                 parse_options_usage(NULL, options, "A", 1);
1689                 parse_options_usage(NULL, options, "a", 1);
1690                 goto out;
1691         }
1692
1693         if (add_default_attributes())
1694                 goto out;
1695
1696         target__validate(&target);
1697
1698         if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1699                 if (target__has_task(&target)) {
1700                         pr_err("Problems finding threads of monitor\n");
1701                         parse_options_usage(stat_usage, options, "p", 1);
1702                         parse_options_usage(NULL, options, "t", 1);
1703                 } else if (target__has_cpu(&target)) {
1704                         perror("failed to parse CPUs map");
1705                         parse_options_usage(stat_usage, options, "C", 1);
1706                         parse_options_usage(NULL, options, "a", 1);
1707                 }
1708                 goto out;
1709         }
1710         if (interval && interval < 100) {
1711                 pr_err("print interval must be >= 100ms\n");
1712                 parse_options_usage(stat_usage, options, "I", 1);
1713                 goto out_free_maps;
1714         }
1715
1716         if (perf_evlist__alloc_stats(evsel_list, interval))
1717                 goto out_free_maps;
1718
1719         if (perf_stat_init_aggr_mode())
1720                 goto out_free_maps;
1721
1722         /*
1723          * We dont want to block the signals - that would cause
1724          * child tasks to inherit that and Ctrl-C would not work.
1725          * What we want is for Ctrl-C to work in the exec()-ed
1726          * task, but being ignored by perf stat itself:
1727          */
1728         atexit(sig_atexit);
1729         if (!forever)
1730                 signal(SIGINT,  skip_signal);
1731         signal(SIGCHLD, skip_signal);
1732         signal(SIGALRM, skip_signal);
1733         signal(SIGABRT, skip_signal);
1734
1735         status = 0;
1736         for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
1737                 if (run_count != 1 && verbose)
1738                         fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1739                                 run_idx + 1);
1740
1741                 status = run_perf_stat(argc, argv);
1742                 if (forever && status != -1) {
1743                         print_stat(argc, argv);
1744                         perf_stat__reset_stats(evsel_list);
1745                 }
1746         }
1747
1748         if (!forever && status != -1 && !interval)
1749                 print_stat(argc, argv);
1750
1751         perf_evlist__free_stats(evsel_list);
1752 out_free_maps:
1753         perf_evlist__delete_maps(evsel_list);
1754 out:
1755         perf_evlist__delete(evsel_list);
1756         return status;
1757 }