tools/perf/builtin-report.c

   1 /*
   2  * builtin-report.c
   3  *
   4  * Builtin report command: Analyze the perf.data input file,
   5  * look up and read DSOs and symbol information and display
   6  * a histogram of results, along various sorting keys.
   7  */
   8 #include "builtin.h"
   9
  10 #include "util/util.h"
  11
  12 #include "util/color.h"
  13 #include <linux/list.h>
  14 #include "util/cache.h"
  15 #include <linux/rbtree.h>
  16 #include "util/symbol.h"
  17 #include "util/string.h"
  18 #include "util/callchain.h"
  19 #include "util/strlist.h"
  20 #include "util/values.h"
  21
  22 #include "perf.h"
  23 #include "util/debug.h"
  24 #include "util/header.h"
  25
  26 #include "util/parse-options.h"
  27 #include "util/parse-events.h"
  28
  29 #include "util/data_map.h"
  30 #include "util/thread.h"
  31 #include "util/sort.h"
  32 #include "util/hist.h"
  33
  34 static char             const *input_name = "perf.data";
  35
  36 static char             *dso_list_str, *comm_list_str, *sym_list_str,
  37                         *col_width_list_str;
  38 static struct strlist   *dso_list, *comm_list, *sym_list;
  39
  40 static int              force;
  41
  42 static int              full_paths;
  43 static int              show_nr_samples;
  44
  45 static int              show_threads;
  46 static struct perf_read_values  show_threads_values;
  47
  48 static char             default_pretty_printing_style[] = "normal";
  49 static char             *pretty_printing_style = default_pretty_printing_style;
  50
  51 static int              exclude_other = 1;
  52
  53 static char             callchain_default_opt[] = "fractal,0.5";
  54
  55 static char             *cwd;
  56 static int              cwdlen;
  57
  58 static struct rb_root   threads;
  59 static struct thread    *last_match;
  60
  61 static struct perf_header *header;
  62
  63 static u64              sample_type;
  64
  65 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask)
  66 {
  67         int i;
  68         size_t ret = 0;
  69
  70         ret += fprintf(fp, "%s", "                ");
  71
  72         for (i = 0; i < depth; i++)
  73                 if (depth_mask & (1 << i))
  74                         ret += fprintf(fp, "|          ");
  75                 else
  76                         ret += fprintf(fp, "           ");
  77
  78         ret += fprintf(fp, "\n");
  79
  80         return ret;
  81 }
  82 static size_t
  83 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  84                        int depth_mask, int count, u64 total_samples,
  85                        int hits)
  86 {
  87         int i;
  88         size_t ret = 0;
  89
  90         ret += fprintf(fp, "%s", "                ");
  91         for (i = 0; i < depth; i++) {
  92                 if (depth_mask & (1 << i))
  93                         ret += fprintf(fp, "|");
  94                 else
  95                         ret += fprintf(fp, " ");
  96                 if (!count && i == depth - 1) {
  97                         double percent;
  98
  99                         percent = hits * 100.0 / total_samples;
 100                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 101                 } else
 102                         ret += fprintf(fp, "%s", "          ");
 103         }
 104         if (chain->sym)
 105                 ret += fprintf(fp, "%s\n", chain->sym->name);
 106         else
 107                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 108
 109         return ret;
 110 }
 111
 112 static struct symbol *rem_sq_bracket;
 113 static struct callchain_list rem_hits;
 114
 115 static void init_rem_hits(void)
 116 {
 117         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 118         if (!rem_sq_bracket) {
 119                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 120                 return;
 121         }
 122
 123         strcpy(rem_sq_bracket->name, "[...]");
 124         rem_hits.sym = rem_sq_bracket;
 125 }
 126
 127 static size_t
 128 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 129                         u64 total_samples, int depth, int depth_mask)
 130 {
 131         struct rb_node *node, *next;
 132         struct callchain_node *child;
 133         struct callchain_list *chain;
 134         int new_depth_mask = depth_mask;
 135         u64 new_total;
 136         u64 remaining;
 137         size_t ret = 0;
 138         int i;
 139
 140         if (callchain_param.mode == CHAIN_GRAPH_REL)
 141                 new_total = self->children_hit;
 142         else
 143                 new_total = total_samples;
 144
 145         remaining = new_total;
 146
 147         node = rb_first(&self->rb_root);
 148         while (node) {
 149                 u64 cumul;
 150
 151                 child = rb_entry(node, struct callchain_node, rb_node);
 152                 cumul = cumul_hits(child);
 153                 remaining -= cumul;
 154
 155                 /*
 156                  * The depth mask manages the output of pipes that show
 157                  * the depth. We don't want to keep the pipes of the current
 158                  * level for the last child of this depth.
 159                  * Except if we have remaining filtered hits. They will
 160                  * supersede the last child
 161                  */
 162                 next = rb_next(node);
 163                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 164                         new_depth_mask &= ~(1 << (depth - 1));
 165
 166                 /*
 167                  * But we keep the older depth mask for the line seperator
 168                  * to keep the level link until we reach the last child
 169                  */
 170                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask);
 171                 i = 0;
 172                 list_for_each_entry(chain, &child->val, list) {
 173                         if (chain->ip >= PERF_CONTEXT_MAX)
 174                                 continue;
 175                         ret += ipchain__fprintf_graph(fp, chain, depth,
 176                                                       new_depth_mask, i++,
 177                                                       new_total,
 178                                                       cumul);
 179                 }
 180                 ret += callchain__fprintf_graph(fp, child, new_total,
 181                                                 depth + 1,
 182                                                 new_depth_mask | (1 << depth));
 183                 node = next;
 184         }
 185
 186         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 187                 remaining && remaining != new_total) {
 188
 189                 if (!rem_sq_bracket)
 190                         return ret;
 191
 192                 new_depth_mask &= ~(1 << (depth - 1));
 193
 194                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 195                                               new_depth_mask, 0, new_total,
 196                                               remaining);
 197         }
 198
 199         return ret;
 200 }
 201
 202 static size_t
 203 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 204                         u64 total_samples)
 205 {
 206         struct callchain_list *chain;
 207         size_t ret = 0;
 208
 209         if (!self)
 210                 return 0;
 211
 212         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 213
 214
 215         list_for_each_entry(chain, &self->val, list) {
 216                 if (chain->ip >= PERF_CONTEXT_MAX)
 217                         continue;
 218                 if (chain->sym)
 219                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 220                 else
 221                         ret += fprintf(fp, "                %p\n",
 222                                         (void *)(long)chain->ip);
 223         }
 224
 225         return ret;
 226 }
 227
 228 static size_t
 229 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 230                               u64 total_samples)
 231 {
 232         struct rb_node *rb_node;
 233         struct callchain_node *chain;
 234         size_t ret = 0;
 235
 236         rb_node = rb_first(&self->sorted_chain);
 237         while (rb_node) {
 238                 double percent;
 239
 240                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 241                 percent = chain->hit * 100.0 / total_samples;
 242                 switch (callchain_param.mode) {
 243                 case CHAIN_FLAT:
 244                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 245                                                      percent);
 246                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 247                         break;
 248                 case CHAIN_GRAPH_ABS: /* Falldown */
 249                 case CHAIN_GRAPH_REL:
 250                         ret += callchain__fprintf_graph(fp, chain,
 251                                                         total_samples, 1, 1);
 252                 case CHAIN_NONE:
 253                 default:
 254                         break;
 255                 }
 256                 ret += fprintf(fp, "\n");
 257                 rb_node = rb_next(rb_node);
 258         }
 259
 260         return ret;
 261 }
 262
 263 static size_t
 264 hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
 265 {
 266         struct sort_entry *se;
 267         size_t ret;
 268
 269         if (exclude_other && !self->parent)
 270                 return 0;
 271
 272         if (total_samples)
 273                 ret = percent_color_fprintf(fp,
 274                                             field_sep ? "%.2f" : "   %6.2f%%",
 275                                         (self->count * 100.0) / total_samples);
 276         else
 277                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 278
 279         if (show_nr_samples) {
 280                 if (field_sep)
 281                         fprintf(fp, "%c%lld", *field_sep, self->count);
 282                 else
 283                         fprintf(fp, "%11lld", self->count);
 284         }
 285
 286         list_for_each_entry(se, &hist_entry__sort_list, list) {
 287                 if (se->elide)
 288                         continue;
 289
 290                 fprintf(fp, "%s", field_sep ?: "  ");
 291                 ret += se->print(fp, self, se->width ? *se->width : 0);
 292         }
 293
 294         ret += fprintf(fp, "\n");
 295
 296         if (callchain)
 297                 hist_entry_callchain__fprintf(fp, self, total_samples);
 298
 299         return ret;
 300 }
 301
 302 /*
 303  *
 304  */
 305
 306 static void dso__calc_col_width(struct dso *self)
 307 {
 308         if (!col_width_list_str && !field_sep &&
 309             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 310                 unsigned int slen = strlen(self->name);
 311                 if (slen > dsos__col_width)
 312                         dsos__col_width = slen;
 313         }
 314
 315         self->slen_calculated = 1;
 316 }
 317
 318 static void thread__comm_adjust(struct thread *self)
 319 {
 320         char *comm = self->comm;
 321
 322         if (!col_width_list_str && !field_sep &&
 323             (!comm_list || strlist__has_entry(comm_list, comm))) {
 324                 unsigned int slen = strlen(comm);
 325
 326                 if (slen > comms__col_width) {
 327                         comms__col_width = slen;
 328                         threads__col_width = slen + 6;
 329                 }
 330         }
 331 }
 332
 333 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 334 {
 335         int ret = thread__set_comm(self, comm);
 336
 337         if (ret)
 338                 return ret;
 339
 340         thread__comm_adjust(self);
 341
 342         return 0;
 343 }
 344
 345
 346 static struct symbol *
 347 resolve_symbol(struct thread *thread, struct map **mapp, u64 *ipp)
 348 {
 349         struct map *map = mapp ? *mapp : NULL;
 350         u64 ip = *ipp;
 351
 352         if (map)
 353                 goto got_map;
 354
 355         if (!thread)
 356                 return NULL;
 357
 358         map = thread__find_map(thread, ip);
 359         if (map != NULL) {
 360                 /*
 361                  * We have to do this here as we may have a dso
 362                  * with no symbol hit that has a name longer than
 363                  * the ones with symbols sampled.
 364                  */
 365                 if (!sort_dso.elide && !map->dso->slen_calculated)
 366                         dso__calc_col_width(map->dso);
 367
 368                 if (mapp)
 369                         *mapp = map;
 370 got_map:
 371                 ip = map->map_ip(map, ip);
 372         } else {
 373                 /*
 374                  * If this is outside of all known maps,
 375                  * and is a negative address, try to look it
 376                  * up in the kernel dso, as it might be a
 377                  * vsyscall or vdso (which executes in user-mode).
 378                  *
 379                  * XXX This is nasty, we should have a symbol list in
 380                  * the "[vdso]" dso, but for now lets use the old
 381                  * trick of looking in the whole kernel symbol list.
 382                  */
 383                 if ((long long)ip < 0)
 384                         return kernel_maps__find_symbol(ip, mapp);
 385         }
 386         dump_printf(" ...... dso: %s\n",
 387                     map ? map->dso->long_name : "<not found>");
 388         dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
 389         *ipp  = ip;
 390
 391         return map ? map->dso->find_symbol(map->dso, ip) : NULL;
 392 }
 393
 394 static int call__match(struct symbol *sym)
 395 {
 396         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 397                 return 1;
 398
 399         return 0;
 400 }
 401
 402 static struct symbol **resolve_callchain(struct thread *thread, struct map *map,
 403                                          struct ip_callchain *chain,
 404                                          struct symbol **parent)
 405 {
 406         u64 context = PERF_CONTEXT_MAX;
 407         struct symbol **syms = NULL;
 408         unsigned int i;
 409
 410         if (callchain) {
 411                 syms = calloc(chain->nr, sizeof(*syms));
 412                 if (!syms) {
 413                         fprintf(stderr, "Can't allocate memory for symbols\n");
 414                         exit(-1);
 415                 }
 416         }
 417
 418         for (i = 0; i < chain->nr; i++) {
 419                 u64 ip = chain->ips[i];
 420                 struct symbol *sym = NULL;
 421
 422                 if (ip >= PERF_CONTEXT_MAX) {
 423                         context = ip;
 424                         continue;
 425                 }
 426
 427                 switch (context) {
 428                 case PERF_CONTEXT_HV:
 429                         break;
 430                 case PERF_CONTEXT_KERNEL:
 431                         sym = kernel_maps__find_symbol(ip, &map);
 432                         break;
 433                 default:
 434                         sym = resolve_symbol(thread, &map, &ip);
 435                         break;
 436                 }
 437
 438                 if (sym) {
 439                         if (sort__has_parent && !*parent && call__match(sym))
 440                                 *parent = sym;
 441                         if (!callchain)
 442                                 break;
 443                         syms[i] = sym;
 444                 }
 445         }
 446
 447         return syms;
 448 }
 449
 450 /*
 451  * collect histogram counts
 452  */
 453
 454 static int
 455 hist_entry__add(struct thread *thread, struct map *map,
 456                 struct symbol *sym, u64 ip, struct ip_callchain *chain,
 457                 char level, u64 count)
 458 {
 459         struct symbol **syms = NULL, *parent = NULL;
 460         bool hit;
 461         struct hist_entry *he;
 462
 463         if ((sort__has_parent || callchain) && chain)
 464                 syms = resolve_callchain(thread, map, chain, &parent);
 465
 466         he = __hist_entry__add(thread, map, sym, parent,
 467                                ip, count, level, &hit);
 468         if (he == NULL)
 469                 return -ENOMEM;
 470
 471         if (hit)
 472                 he->count += count;
 473
 474         if (callchain) {
 475                 if (!hit)
 476                         callchain_init(&he->callchain);
 477                 append_chain(&he->callchain, chain, syms);
 478                 free(syms);
 479         }
 480
 481         return 0;
 482 }
 483
 484 static size_t output__fprintf(FILE *fp, u64 total_samples)
 485 {
 486         struct hist_entry *pos;
 487         struct sort_entry *se;
 488         struct rb_node *nd;
 489         size_t ret = 0;
 490         unsigned int width;
 491         char *col_width = col_width_list_str;
 492         int raw_printing_style;
 493
 494         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 495
 496         init_rem_hits();
 497
 498         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 499         fprintf(fp, "#\n");
 500
 501         fprintf(fp, "# Overhead");
 502         if (show_nr_samples) {
 503                 if (field_sep)
 504                         fprintf(fp, "%cSamples", *field_sep);
 505                 else
 506                         fputs("  Samples  ", fp);
 507         }
 508         list_for_each_entry(se, &hist_entry__sort_list, list) {
 509                 if (se->elide)
 510                         continue;
 511                 if (field_sep) {
 512                         fprintf(fp, "%c%s", *field_sep, se->header);
 513                         continue;
 514                 }
 515                 width = strlen(se->header);
 516                 if (se->width) {
 517                         if (col_width_list_str) {
 518                                 if (col_width) {
 519                                         *se->width = atoi(col_width);
 520                                         col_width = strchr(col_width, ',');
 521                                         if (col_width)
 522                                                 ++col_width;
 523                                 }
 524                         }
 525                         width = *se->width = max(*se->width, width);
 526                 }
 527                 fprintf(fp, "  %*s", width, se->header);
 528         }
 529         fprintf(fp, "\n");
 530
 531         if (field_sep)
 532                 goto print_entries;
 533
 534         fprintf(fp, "# ........");
 535         if (show_nr_samples)
 536                 fprintf(fp, " ..........");
 537         list_for_each_entry(se, &hist_entry__sort_list, list) {
 538                 unsigned int i;
 539
 540                 if (se->elide)
 541                         continue;
 542
 543                 fprintf(fp, "  ");
 544                 if (se->width)
 545                         width = *se->width;
 546                 else
 547                         width = strlen(se->header);
 548                 for (i = 0; i < width; i++)
 549                         fprintf(fp, ".");
 550         }
 551         fprintf(fp, "\n");
 552
 553         fprintf(fp, "#\n");
 554
 555 print_entries:
 556         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 557                 pos = rb_entry(nd, struct hist_entry, rb_node);
 558                 ret += hist_entry__fprintf(fp, pos, total_samples);
 559         }
 560
 561         if (sort_order == default_sort_order &&
 562                         parent_pattern == default_parent_pattern) {
 563                 fprintf(fp, "#\n");
 564                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 565                 fprintf(fp, "#\n");
 566         }
 567         fprintf(fp, "\n");
 568
 569         free(rem_sq_bracket);
 570
 571         if (show_threads)
 572                 perf_read_values_display(fp, &show_threads_values,
 573                                          raw_printing_style);
 574
 575         return ret;
 576 }
 577
 578 static int validate_chain(struct ip_callchain *chain, event_t *event)
 579 {
 580         unsigned int chain_size;
 581
 582         chain_size = event->header.size;
 583         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 584
 585         if (chain->nr*sizeof(u64) > chain_size)
 586                 return -1;
 587
 588         return 0;
 589 }
 590
 591 static int
 592 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 593 {
 594         char level;
 595         struct symbol *sym = NULL;
 596         struct thread *thread;
 597         u64 ip = event->ip.ip;
 598         u64 period = 1;
 599         struct map *map = NULL;
 600         void *more_data = event->ip.__more_data;
 601         struct ip_callchain *chain = NULL;
 602         int cpumode;
 603
 604         thread = threads__findnew(event->ip.pid, &threads, &last_match);
 605
 606         if (sample_type & PERF_SAMPLE_PERIOD) {
 607                 period = *(u64 *)more_data;
 608                 more_data += sizeof(u64);
 609         }
 610
 611         dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
 612                 (void *)(offset + head),
 613                 (void *)(long)(event->header.size),
 614                 event->header.misc,
 615                 event->ip.pid, event->ip.tid,
 616                 (void *)(long)ip,
 617                 (long long)period);
 618
 619         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 620                 unsigned int i;
 621
 622                 chain = (void *)more_data;
 623
 624                 dump_printf("... chain: nr:%Lu\n", chain->nr);
 625
 626                 if (validate_chain(chain, event) < 0) {
 627                         eprintf("call-chain problem with event, skipping it.\n");
 628                         return 0;
 629                 }
 630
 631                 if (dump_trace) {
 632                         for (i = 0; i < chain->nr; i++)
 633                                 dump_printf("..... %2d: %016Lx\n", i, chain->ips[i]);
 634                 }
 635         }
 636
 637         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 638
 639         if (thread == NULL) {
 640                 eprintf("problem processing %d event, skipping it.\n",
 641                         event->header.type);
 642                 return -1;
 643         }
 644
 645         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 646                 return 0;
 647
 648         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 649
 650         if (cpumode == PERF_RECORD_MISC_KERNEL) {
 651                 level = 'k';
 652                 sym = kernel_maps__find_symbol(ip, &map);
 653                 dump_printf(" ...... dso: %s\n",
 654                             map ? map->dso->long_name : "<not found>");
 655         } else if (cpumode == PERF_RECORD_MISC_USER) {
 656                 level = '.';
 657                 sym = resolve_symbol(thread, &map, &ip);
 658
 659         } else {
 660                 level = 'H';
 661                 dump_printf(" ...... dso: [hypervisor]\n");
 662         }
 663
 664         if (dso_list &&
 665             (!map || !map->dso ||
 666              !(strlist__has_entry(dso_list, map->dso->short_name) ||
 667                (map->dso->short_name != map->dso->long_name &&
 668                 strlist__has_entry(dso_list, map->dso->long_name)))))
 669                 return 0;
 670
 671         if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
 672                 return 0;
 673
 674         if (hist_entry__add(thread, map, sym, ip,
 675                             chain, level, period)) {
 676                 eprintf("problem incrementing symbol count, skipping event\n");
 677                 return -1;
 678         }
 679
 680         total += period;
 681
 682         return 0;
 683 }
 684
 685 static int
 686 process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 687 {
 688         struct thread *thread;
 689         struct map *map = map__new(&event->mmap, cwd, cwdlen);
 690
 691         thread = threads__findnew(event->mmap.pid, &threads, &last_match);
 692
 693         dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
 694                 (void *)(offset + head),
 695                 (void *)(long)(event->header.size),
 696                 event->mmap.pid,
 697                 event->mmap.tid,
 698                 (void *)(long)event->mmap.start,
 699                 (void *)(long)event->mmap.len,
 700                 (void *)(long)event->mmap.pgoff,
 701                 event->mmap.filename);
 702
 703         if (thread == NULL || map == NULL) {
 704                 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
 705                 return 0;
 706         }
 707
 708         thread__insert_map(thread, map);
 709         total_mmap++;
 710
 711         return 0;
 712 }
 713
 714 static int
 715 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 716 {
 717         struct thread *thread;
 718
 719         thread = threads__findnew(event->comm.pid, &threads, &last_match);
 720
 721         dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
 722                 (void *)(offset + head),
 723                 (void *)(long)(event->header.size),
 724                 event->comm.comm, event->comm.pid);
 725
 726         if (thread == NULL ||
 727             thread__set_comm_adjust(thread, event->comm.comm)) {
 728                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 729                 return -1;
 730         }
 731         total_comm++;
 732
 733         return 0;
 734 }
 735
 736 static int
 737 process_task_event(event_t *event, unsigned long offset, unsigned long head)
 738 {
 739         struct thread *thread;
 740         struct thread *parent;
 741
 742         thread = threads__findnew(event->fork.pid, &threads, &last_match);
 743         parent = threads__findnew(event->fork.ppid, &threads, &last_match);
 744
 745         dump_printf("%p [%p]: PERF_RECORD_%s: (%d:%d):(%d:%d)\n",
 746                 (void *)(offset + head),
 747                 (void *)(long)(event->header.size),
 748                 event->header.type == PERF_RECORD_FORK ? "FORK" : "EXIT",
 749                 event->fork.pid, event->fork.tid,
 750                 event->fork.ppid, event->fork.ptid);
 751
 752         /*
 753          * A thread clone will have the same PID for both
 754          * parent and child.
 755          */
 756         if (thread == parent)
 757                 return 0;
 758
 759         if (event->header.type == PERF_RECORD_EXIT)
 760                 return 0;
 761
 762         if (!thread || !parent || thread__fork(thread, parent)) {
 763                 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
 764                 return -1;
 765         }
 766         total_fork++;
 767
 768         return 0;
 769 }
 770
 771 static int
 772 process_lost_event(event_t *event, unsigned long offset, unsigned long head)
 773 {
 774         dump_printf("%p [%p]: PERF_RECORD_LOST: id:%Ld: lost:%Ld\n",
 775                 (void *)(offset + head),
 776                 (void *)(long)(event->header.size),
 777                 event->lost.id,
 778                 event->lost.lost);
 779
 780         total_lost += event->lost.lost;
 781
 782         return 0;
 783 }
 784
 785 static int
 786 process_read_event(event_t *event, unsigned long offset, unsigned long head)
 787 {
 788         struct perf_event_attr *attr;
 789
 790         attr = perf_header__find_attr(event->read.id, header);
 791
 792         if (show_threads) {
 793                 const char *name = attr ? __event_name(attr->type, attr->config)
 794                                    : "unknown";
 795                 perf_read_values_add_value(&show_threads_values,
 796                                            event->read.pid, event->read.tid,
 797                                            event->read.id,
 798                                            name,
 799                                            event->read.value);
 800         }
 801
 802         dump_printf("%p [%p]: PERF_RECORD_READ: %d %d %s %Lu\n",
 803                         (void *)(offset + head),
 804                         (void *)(long)(event->header.size),
 805                         event->read.pid,
 806                         event->read.tid,
 807                         attr ? __event_name(attr->type, attr->config)
 808                              : "FAIL",
 809                         event->read.value);
 810
 811         return 0;
 812 }
 813
 814 static int sample_type_check(u64 type)
 815 {
 816         sample_type = type;
 817
 818         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 819                 if (sort__has_parent) {
 820                         fprintf(stderr, "selected --sort parent, but no"
 821                                         " callchain data. Did you call"
 822                                         " perf record without -g?\n");
 823                         return -1;
 824                 }
 825                 if (callchain) {
 826                         fprintf(stderr, "selected -g but no callchain data."
 827                                         " Did you call perf record without"
 828                                         " -g?\n");
 829                         return -1;
 830                 }
 831         } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
 832                         callchain = 1;
 833                         if (register_callchain_param(&callchain_param) < 0) {
 834                                 fprintf(stderr, "Can't register callchain"
 835                                                 " params\n");
 836                                 return -1;
 837                         }
 838         }
 839
 840         return 0;
 841 }
 842
 843 static struct perf_file_handler file_handler = {
 844         .process_sample_event   = process_sample_event,
 845         .process_mmap_event     = process_mmap_event,
 846         .process_comm_event     = process_comm_event,
 847         .process_exit_event     = process_task_event,
 848         .process_fork_event     = process_task_event,
 849         .process_lost_event     = process_lost_event,
 850         .process_read_event     = process_read_event,
 851         .sample_type_check      = sample_type_check,
 852 };
 853
 854
 855 static int __cmd_report(void)
 856 {
 857         struct thread *idle;
 858         int ret;
 859
 860         idle = register_idle_thread(&threads, &last_match);
 861         thread__comm_adjust(idle);
 862
 863         if (show_threads)
 864                 perf_read_values_init(&show_threads_values);
 865
 866         register_perf_file_handler(&file_handler);
 867
 868         ret = mmap_dispatch_perf_file(&header, input_name, force, full_paths,
 869                                       &cwdlen, &cwd);
 870         if (ret)
 871                 return ret;
 872
 873         dump_printf("      IP events: %10ld\n", total);
 874         dump_printf("    mmap events: %10ld\n", total_mmap);
 875         dump_printf("    comm events: %10ld\n", total_comm);
 876         dump_printf("    fork events: %10ld\n", total_fork);
 877         dump_printf("    lost events: %10ld\n", total_lost);
 878         dump_printf(" unknown events: %10ld\n", file_handler.total_unknown);
 879
 880         if (dump_trace)
 881                 return 0;
 882
 883         if (verbose > 3)
 884                 threads__fprintf(stdout, &threads);
 885
 886         if (verbose > 2)
 887                 dsos__fprintf(stdout);
 888
 889         collapse__resort();
 890         output__resort(total);
 891         output__fprintf(stdout, total);
 892
 893         if (show_threads)
 894                 perf_read_values_destroy(&show_threads_values);
 895
 896         return ret;
 897 }
 898
 899 static int
 900 parse_callchain_opt(const struct option *opt __used, const char *arg,
 901                     int unset __used)
 902 {
 903         char *tok;
 904         char *endptr;
 905
 906         callchain = 1;
 907
 908         if (!arg)
 909                 return 0;
 910
 911         tok = strtok((char *)arg, ",");
 912         if (!tok)
 913                 return -1;
 914
 915         /* get the output mode */
 916         if (!strncmp(tok, "graph", strlen(arg)))
 917                 callchain_param.mode = CHAIN_GRAPH_ABS;
 918
 919         else if (!strncmp(tok, "flat", strlen(arg)))
 920                 callchain_param.mode = CHAIN_FLAT;
 921
 922         else if (!strncmp(tok, "fractal", strlen(arg)))
 923                 callchain_param.mode = CHAIN_GRAPH_REL;
 924
 925         else if (!strncmp(tok, "none", strlen(arg))) {
 926                 callchain_param.mode = CHAIN_NONE;
 927                 callchain = 0;
 928
 929                 return 0;
 930         }
 931
 932         else
 933                 return -1;
 934
 935         /* get the min percentage */
 936         tok = strtok(NULL, ",");
 937         if (!tok)
 938                 goto setup;
 939
 940         callchain_param.min_percent = strtod(tok, &endptr);
 941         if (tok == endptr)
 942                 return -1;
 943
 944 setup:
 945         if (register_callchain_param(&callchain_param) < 0) {
 946                 fprintf(stderr, "Can't register callchain params\n");
 947                 return -1;
 948         }
 949         return 0;
 950 }
 951
 952 //static const char * const report_usage[] = {
 953 const char * const report_usage[] = {
 954         "perf report [<options>] <command>",
 955         NULL
 956 };
 957
 958 static const struct option options[] = {
 959         OPT_STRING('i', "input", &input_name, "file",
 960                     "input file name"),
 961         OPT_BOOLEAN('v', "verbose", &verbose,
 962                     "be more verbose (show symbol address, etc)"),
 963         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 964                     "dump raw trace in ASCII"),
 965         OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
 966         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 967         OPT_BOOLEAN('m', "modules", &modules,
 968                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 969         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 970                     "Show a column with the number of samples"),
 971         OPT_BOOLEAN('T', "threads", &show_threads,
 972                     "Show per-thread event counters"),
 973         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 974                    "pretty printing style key: normal raw"),
 975         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 976                    "sort by key(s): pid, comm, dso, symbol, parent"),
 977         OPT_BOOLEAN('P', "full-paths", &full_paths,
 978                     "Don't shorten the pathnames taking into account the cwd"),
 979         OPT_STRING('p', "parent", &parent_pattern, "regex",
 980                    "regex filter to identify parent, see: '--sort parent'"),
 981         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 982                     "Only display entries with parent-match"),
 983         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 984                      "Display callchains using output_type and min percent threshold. "
 985                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 986         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 987                    "only consider symbols in these dsos"),
 988         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 989                    "only consider symbols in these comms"),
 990         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 991                    "only consider these symbols"),
 992         OPT_STRING('w', "column-widths", &col_width_list_str,
 993                    "width[,width...]",
 994                    "don't try to adjust column width, use these fixed values"),
 995         OPT_STRING('t', "field-separator", &field_sep, "separator",
 996                    "separator for columns, no spaces will be added between "
 997                    "columns '.' is reserved."),
 998         OPT_END()
 999 };
1000
1001 static void setup_sorting(void)
1002 {
1003         char *tmp, *tok, *str = strdup(sort_order);
1004
1005         for (tok = strtok_r(str, ", ", &tmp);
1006                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
1007                 if (sort_dimension__add(tok) < 0) {
1008                         error("Unknown --sort key: `%s'", tok);
1009                         usage_with_options(report_usage, options);
1010                 }
1011         }
1012
1013         free(str);
1014 }
1015
1016 static void setup_list(struct strlist **list, const char *list_str,
1017                        struct sort_entry *se, const char *list_name,
1018                        FILE *fp)
1019 {
1020         if (list_str) {
1021                 *list = strlist__new(true, list_str);
1022                 if (!*list) {
1023                         fprintf(stderr, "problems parsing %s list\n",
1024                                 list_name);
1025                         exit(129);
1026                 }
1027                 if (strlist__nr_entries(*list) == 1) {
1028                         fprintf(fp, "# %s: %s\n", list_name,
1029                                 strlist__entry(*list, 0)->s);
1030                         se->elide = true;
1031                 }
1032         }
1033 }
1034
1035 int cmd_report(int argc, const char **argv, const char *prefix __used)
1036 {
1037         symbol__init();
1038
1039         argc = parse_options(argc, argv, options, report_usage, 0);
1040
1041         setup_sorting();
1042
1043         if (parent_pattern != default_parent_pattern) {
1044                 sort_dimension__add("parent");
1045                 sort_parent.elide = 1;
1046         } else
1047                 exclude_other = 0;
1048
1049         /*
1050          * Any (unrecognized) arguments left?
1051          */
1052         if (argc)
1053                 usage_with_options(report_usage, options);
1054
1055         setup_pager();
1056
1057         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
1058         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
1059         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
1060
1061         if (field_sep && *field_sep == '.') {
1062                 fputs("'.' is the only non valid --field-separator argument\n",
1063                       stderr);
1064                 exit(129);
1065         }
1066
1067         return __cmd_report();
1068 }