SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 perf_header *header;
  59
  60 static u64              sample_type;
  61
  62 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask)
  63 {
  64         int i;
  65         size_t ret = 0;
  66
  67         ret += fprintf(fp, "%s", "                ");
  68
  69         for (i = 0; i < depth; i++)
  70                 if (depth_mask & (1 << i))
  71                         ret += fprintf(fp, "|          ");
  72                 else
  73                         ret += fprintf(fp, "           ");
  74
  75         ret += fprintf(fp, "\n");
  76
  77         return ret;
  78 }
  79 static size_t
  80 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  81                        int depth_mask, int count, u64 total_samples,
  82                        int hits)
  83 {
  84         int i;
  85         size_t ret = 0;
  86
  87         ret += fprintf(fp, "%s", "                ");
  88         for (i = 0; i < depth; i++) {
  89                 if (depth_mask & (1 << i))
  90                         ret += fprintf(fp, "|");
  91                 else
  92                         ret += fprintf(fp, " ");
  93                 if (!count && i == depth - 1) {
  94                         double percent;
  95
  96                         percent = hits * 100.0 / total_samples;
  97                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
  98                 } else
  99                         ret += fprintf(fp, "%s", "          ");
 100         }
 101         if (chain->sym)
 102                 ret += fprintf(fp, "%s\n", chain->sym->name);
 103         else
 104                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 105
 106         return ret;
 107 }
 108
 109 static struct symbol *rem_sq_bracket;
 110 static struct callchain_list rem_hits;
 111
 112 static void init_rem_hits(void)
 113 {
 114         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 115         if (!rem_sq_bracket) {
 116                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 117                 return;
 118         }
 119
 120         strcpy(rem_sq_bracket->name, "[...]");
 121         rem_hits.sym = rem_sq_bracket;
 122 }
 123
 124 static size_t
 125 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 126                            u64 total_samples, int depth, int depth_mask)
 127 {
 128         struct rb_node *node, *next;
 129         struct callchain_node *child;
 130         struct callchain_list *chain;
 131         int new_depth_mask = depth_mask;
 132         u64 new_total;
 133         u64 remaining;
 134         size_t ret = 0;
 135         int i;
 136
 137         if (callchain_param.mode == CHAIN_GRAPH_REL)
 138                 new_total = self->children_hit;
 139         else
 140                 new_total = total_samples;
 141
 142         remaining = new_total;
 143
 144         node = rb_first(&self->rb_root);
 145         while (node) {
 146                 u64 cumul;
 147
 148                 child = rb_entry(node, struct callchain_node, rb_node);
 149                 cumul = cumul_hits(child);
 150                 remaining -= cumul;
 151
 152                 /*
 153                  * The depth mask manages the output of pipes that show
 154                  * the depth. We don't want to keep the pipes of the current
 155                  * level for the last child of this depth.
 156                  * Except if we have remaining filtered hits. They will
 157                  * supersede the last child
 158                  */
 159                 next = rb_next(node);
 160                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 161                         new_depth_mask &= ~(1 << (depth - 1));
 162
 163                 /*
 164                  * But we keep the older depth mask for the line seperator
 165                  * to keep the level link until we reach the last child
 166                  */
 167                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask);
 168                 i = 0;
 169                 list_for_each_entry(chain, &child->val, list) {
 170                         if (chain->ip >= PERF_CONTEXT_MAX)
 171                                 continue;
 172                         ret += ipchain__fprintf_graph(fp, chain, depth,
 173                                                       new_depth_mask, i++,
 174                                                       new_total,
 175                                                       cumul);
 176                 }
 177                 ret += __callchain__fprintf_graph(fp, child, new_total,
 178                                                   depth + 1,
 179                                                   new_depth_mask | (1 << depth));
 180                 node = next;
 181         }
 182
 183         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 184                 remaining && remaining != new_total) {
 185
 186                 if (!rem_sq_bracket)
 187                         return ret;
 188
 189                 new_depth_mask &= ~(1 << (depth - 1));
 190
 191                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 192                                               new_depth_mask, 0, new_total,
 193                                               remaining);
 194         }
 195
 196         return ret;
 197 }
 198
 199 static size_t
 200 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 201                          u64 total_samples)
 202 {
 203         struct callchain_list *chain;
 204         int i = 0;
 205         int ret = 0;
 206
 207         list_for_each_entry(chain, &self->val, list) {
 208                 if (chain->ip >= PERF_CONTEXT_MAX)
 209                         continue;
 210
 211                 if (!i++ && sort_by_sym_first)
 212                         continue;
 213
 214                 if (chain->sym)
 215                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 216                 else
 217                         ret += fprintf(fp, "                %p\n",
 218                                         (void *)(long)chain->ip);
 219         }
 220
 221         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1);
 222
 223         return ret;
 224 }
 225
 226 static size_t
 227 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 228                         u64 total_samples)
 229 {
 230         struct callchain_list *chain;
 231         size_t ret = 0;
 232
 233         if (!self)
 234                 return 0;
 235
 236         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 237
 238
 239         list_for_each_entry(chain, &self->val, list) {
 240                 if (chain->ip >= PERF_CONTEXT_MAX)
 241                         continue;
 242                 if (chain->sym)
 243                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 244                 else
 245                         ret += fprintf(fp, "                %p\n",
 246                                         (void *)(long)chain->ip);
 247         }
 248
 249         return ret;
 250 }
 251
 252 static size_t
 253 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 254                               u64 total_samples)
 255 {
 256         struct rb_node *rb_node;
 257         struct callchain_node *chain;
 258         size_t ret = 0;
 259
 260         rb_node = rb_first(&self->sorted_chain);
 261         while (rb_node) {
 262                 double percent;
 263
 264                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 265                 percent = chain->hit * 100.0 / total_samples;
 266                 switch (callchain_param.mode) {
 267                 case CHAIN_FLAT:
 268                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 269                                                      percent);
 270                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 271                         break;
 272                 case CHAIN_GRAPH_ABS: /* Falldown */
 273                 case CHAIN_GRAPH_REL:
 274                         ret += callchain__fprintf_graph(fp, chain, total_samples);
 275                 case CHAIN_NONE:
 276                 default:
 277                         break;
 278                 }
 279                 ret += fprintf(fp, "\n");
 280                 rb_node = rb_next(rb_node);
 281         }
 282
 283         return ret;
 284 }
 285
 286 static size_t
 287 hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
 288 {
 289         struct sort_entry *se;
 290         size_t ret;
 291
 292         if (exclude_other && !self->parent)
 293                 return 0;
 294
 295         if (total_samples)
 296                 ret = percent_color_fprintf(fp,
 297                                             field_sep ? "%.2f" : "   %6.2f%%",
 298                                         (self->count * 100.0) / total_samples);
 299         else
 300                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 301
 302         if (show_nr_samples) {
 303                 if (field_sep)
 304                         fprintf(fp, "%c%lld", *field_sep, self->count);
 305                 else
 306                         fprintf(fp, "%11lld", self->count);
 307         }
 308
 309         list_for_each_entry(se, &hist_entry__sort_list, list) {
 310                 if (se->elide)
 311                         continue;
 312
 313                 fprintf(fp, "%s", field_sep ?: "  ");
 314                 ret += se->print(fp, self, se->width ? *se->width : 0);
 315         }
 316
 317         ret += fprintf(fp, "\n");
 318
 319         if (callchain)
 320                 hist_entry_callchain__fprintf(fp, self, total_samples);
 321
 322         return ret;
 323 }
 324
 325 /*
 326  *
 327  */
 328
 329 static void dso__calc_col_width(struct dso *self)
 330 {
 331         if (!col_width_list_str && !field_sep &&
 332             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 333                 unsigned int slen = strlen(self->name);
 334                 if (slen > dsos__col_width)
 335                         dsos__col_width = slen;
 336         }
 337
 338         self->slen_calculated = 1;
 339 }
 340
 341 static void thread__comm_adjust(struct thread *self)
 342 {
 343         char *comm = self->comm;
 344
 345         if (!col_width_list_str && !field_sep &&
 346             (!comm_list || strlist__has_entry(comm_list, comm))) {
 347                 unsigned int slen = strlen(comm);
 348
 349                 if (slen > comms__col_width) {
 350                         comms__col_width = slen;
 351                         threads__col_width = slen + 6;
 352                 }
 353         }
 354 }
 355
 356 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 357 {
 358         int ret = thread__set_comm(self, comm);
 359
 360         if (ret)
 361                 return ret;
 362
 363         thread__comm_adjust(self);
 364
 365         return 0;
 366 }
 367
 368
 369 static struct symbol *
 370 resolve_symbol(struct thread *thread, struct map **mapp, u64 *ipp)
 371 {
 372         struct map *map = mapp ? *mapp : NULL;
 373         u64 ip = *ipp;
 374
 375         if (map)
 376                 goto got_map;
 377
 378         if (!thread)
 379                 return NULL;
 380
 381         map = thread__find_map(thread, ip);
 382         if (map != NULL) {
 383                 /*
 384                  * We have to do this here as we may have a dso
 385                  * with no symbol hit that has a name longer than
 386                  * the ones with symbols sampled.
 387                  */
 388                 if (!sort_dso.elide && !map->dso->slen_calculated)
 389                         dso__calc_col_width(map->dso);
 390
 391                 if (mapp)
 392                         *mapp = map;
 393 got_map:
 394                 ip = map->map_ip(map, ip);
 395         } else {
 396                 /*
 397                  * If this is outside of all known maps,
 398                  * and is a negative address, try to look it
 399                  * up in the kernel dso, as it might be a
 400                  * vsyscall or vdso (which executes in user-mode).
 401                  *
 402                  * XXX This is nasty, we should have a symbol list in
 403                  * the "[vdso]" dso, but for now lets use the old
 404                  * trick of looking in the whole kernel symbol list.
 405                  */
 406                 if ((long long)ip < 0)
 407                         return kernel_maps__find_symbol(ip, mapp);
 408         }
 409         dump_printf(" ...... dso: %s\n",
 410                     map ? map->dso->long_name : "<not found>");
 411         dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
 412         *ipp  = ip;
 413
 414         return map ? map->dso->find_symbol(map->dso, ip) : NULL;
 415 }
 416
 417 static int call__match(struct symbol *sym)
 418 {
 419         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 420                 return 1;
 421
 422         return 0;
 423 }
 424
 425 static struct symbol **resolve_callchain(struct thread *thread, struct map *map,
 426                                          struct ip_callchain *chain,
 427                                          struct symbol **parent)
 428 {
 429         u64 context = PERF_CONTEXT_MAX;
 430         struct symbol **syms = NULL;
 431         unsigned int i;
 432
 433         if (callchain) {
 434                 syms = calloc(chain->nr, sizeof(*syms));
 435                 if (!syms) {
 436                         fprintf(stderr, "Can't allocate memory for symbols\n");
 437                         exit(-1);
 438                 }
 439         }
 440
 441         for (i = 0; i < chain->nr; i++) {
 442                 u64 ip = chain->ips[i];
 443                 struct symbol *sym = NULL;
 444
 445                 if (ip >= PERF_CONTEXT_MAX) {
 446                         context = ip;
 447                         continue;
 448                 }
 449
 450                 switch (context) {
 451                 case PERF_CONTEXT_HV:
 452                         break;
 453                 case PERF_CONTEXT_KERNEL:
 454                         sym = kernel_maps__find_symbol(ip, &map);
 455                         break;
 456                 default:
 457                         sym = resolve_symbol(thread, &map, &ip);
 458                         break;
 459                 }
 460
 461                 if (sym) {
 462                         if (sort__has_parent && !*parent && call__match(sym))
 463                                 *parent = sym;
 464                         if (!callchain)
 465                                 break;
 466                         syms[i] = sym;
 467                 }
 468         }
 469
 470         return syms;
 471 }
 472
 473 /*
 474  * collect histogram counts
 475  */
 476
 477 static int
 478 hist_entry__add(struct thread *thread, struct map *map,
 479                 struct symbol *sym, u64 ip, struct ip_callchain *chain,
 480                 char level, u64 count)
 481 {
 482         struct symbol **syms = NULL, *parent = NULL;
 483         bool hit;
 484         struct hist_entry *he;
 485
 486         if ((sort__has_parent || callchain) && chain)
 487                 syms = resolve_callchain(thread, map, chain, &parent);
 488
 489         he = __hist_entry__add(thread, map, sym, parent,
 490                                ip, count, level, &hit);
 491         if (he == NULL)
 492                 return -ENOMEM;
 493
 494         if (hit)
 495                 he->count += count;
 496
 497         if (callchain) {
 498                 if (!hit)
 499                         callchain_init(&he->callchain);
 500                 append_chain(&he->callchain, chain, syms);
 501                 free(syms);
 502         }
 503
 504         return 0;
 505 }
 506
 507 static size_t output__fprintf(FILE *fp, u64 total_samples)
 508 {
 509         struct hist_entry *pos;
 510         struct sort_entry *se;
 511         struct rb_node *nd;
 512         size_t ret = 0;
 513         unsigned int width;
 514         char *col_width = col_width_list_str;
 515         int raw_printing_style;
 516
 517         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 518
 519         init_rem_hits();
 520
 521         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 522         fprintf(fp, "#\n");
 523
 524         fprintf(fp, "# Overhead");
 525         if (show_nr_samples) {
 526                 if (field_sep)
 527                         fprintf(fp, "%cSamples", *field_sep);
 528                 else
 529                         fputs("  Samples  ", fp);
 530         }
 531         list_for_each_entry(se, &hist_entry__sort_list, list) {
 532                 if (se->elide)
 533                         continue;
 534                 if (field_sep) {
 535                         fprintf(fp, "%c%s", *field_sep, se->header);
 536                         continue;
 537                 }
 538                 width = strlen(se->header);
 539                 if (se->width) {
 540                         if (col_width_list_str) {
 541                                 if (col_width) {
 542                                         *se->width = atoi(col_width);
 543                                         col_width = strchr(col_width, ',');
 544                                         if (col_width)
 545                                                 ++col_width;
 546                                 }
 547                         }
 548                         width = *se->width = max(*se->width, width);
 549                 }
 550                 fprintf(fp, "  %*s", width, se->header);
 551         }
 552         fprintf(fp, "\n");
 553
 554         if (field_sep)
 555                 goto print_entries;
 556
 557         fprintf(fp, "# ........");
 558         if (show_nr_samples)
 559                 fprintf(fp, " ..........");
 560         list_for_each_entry(se, &hist_entry__sort_list, list) {
 561                 unsigned int i;
 562
 563                 if (se->elide)
 564                         continue;
 565
 566                 fprintf(fp, "  ");
 567                 if (se->width)
 568                         width = *se->width;
 569                 else
 570                         width = strlen(se->header);
 571                 for (i = 0; i < width; i++)
 572                         fprintf(fp, ".");
 573         }
 574         fprintf(fp, "\n");
 575
 576         fprintf(fp, "#\n");
 577
 578 print_entries:
 579         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 580                 pos = rb_entry(nd, struct hist_entry, rb_node);
 581                 ret += hist_entry__fprintf(fp, pos, total_samples);
 582         }
 583
 584         if (sort_order == default_sort_order &&
 585                         parent_pattern == default_parent_pattern) {
 586                 fprintf(fp, "#\n");
 587                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 588                 fprintf(fp, "#\n");
 589         }
 590         fprintf(fp, "\n");
 591
 592         free(rem_sq_bracket);
 593
 594         if (show_threads)
 595                 perf_read_values_display(fp, &show_threads_values,
 596                                          raw_printing_style);
 597
 598         return ret;
 599 }
 600
 601 static int validate_chain(struct ip_callchain *chain, event_t *event)
 602 {
 603         unsigned int chain_size;
 604
 605         chain_size = event->header.size;
 606         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 607
 608         if (chain->nr*sizeof(u64) > chain_size)
 609                 return -1;
 610
 611         return 0;
 612 }
 613
 614 static int
 615 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 616 {
 617         char level;
 618         struct symbol *sym = NULL;
 619         u64 ip = event->ip.ip;
 620         u64 period = 1;
 621         struct map *map = NULL;
 622         void *more_data = event->ip.__more_data;
 623         struct ip_callchain *chain = NULL;
 624         int cpumode;
 625         struct thread *thread = threads__findnew(event->ip.pid);
 626
 627         if (sample_type & PERF_SAMPLE_PERIOD) {
 628                 period = *(u64 *)more_data;
 629                 more_data += sizeof(u64);
 630         }
 631
 632         dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
 633                 (void *)(offset + head),
 634                 (void *)(long)(event->header.size),
 635                 event->header.misc,
 636                 event->ip.pid, event->ip.tid,
 637                 (void *)(long)ip,
 638                 (long long)period);
 639
 640         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 641                 unsigned int i;
 642
 643                 chain = (void *)more_data;
 644
 645                 dump_printf("... chain: nr:%Lu\n", chain->nr);
 646
 647                 if (validate_chain(chain, event) < 0) {
 648                         eprintf("call-chain problem with event, skipping it.\n");
 649                         return 0;
 650                 }
 651
 652                 if (dump_trace) {
 653                         for (i = 0; i < chain->nr; i++)
 654                                 dump_printf("..... %2d: %016Lx\n", i, chain->ips[i]);
 655                 }
 656         }
 657
 658         if (thread == NULL) {
 659                 eprintf("problem processing %d event, skipping it.\n",
 660                         event->header.type);
 661                 return -1;
 662         }
 663
 664         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 665
 666         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 667                 return 0;
 668
 669         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 670
 671         if (cpumode == PERF_RECORD_MISC_KERNEL) {
 672                 level = 'k';
 673                 sym = kernel_maps__find_symbol(ip, &map);
 674                 dump_printf(" ...... dso: %s\n",
 675                             map ? map->dso->long_name : "<not found>");
 676         } else if (cpumode == PERF_RECORD_MISC_USER) {
 677                 level = '.';
 678                 sym = resolve_symbol(thread, &map, &ip);
 679
 680         } else {
 681                 level = 'H';
 682                 dump_printf(" ...... dso: [hypervisor]\n");
 683         }
 684
 685         if (dso_list &&
 686             (!map || !map->dso ||
 687              !(strlist__has_entry(dso_list, map->dso->short_name) ||
 688                (map->dso->short_name != map->dso->long_name &&
 689                 strlist__has_entry(dso_list, map->dso->long_name)))))
 690                 return 0;
 691
 692         if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
 693                 return 0;
 694
 695         if (hist_entry__add(thread, map, sym, ip,
 696                             chain, level, period)) {
 697                 eprintf("problem incrementing symbol count, skipping event\n");
 698                 return -1;
 699         }
 700
 701         total += period;
 702
 703         return 0;
 704 }
 705
 706 static int
 707 process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 708 {
 709         struct map *map = map__new(&event->mmap, cwd, cwdlen, 0, NULL, verbose);
 710         struct thread *thread = threads__findnew(event->mmap.pid);
 711
 712         dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
 713                 (void *)(offset + head),
 714                 (void *)(long)(event->header.size),
 715                 event->mmap.pid,
 716                 event->mmap.tid,
 717                 (void *)(long)event->mmap.start,
 718                 (void *)(long)event->mmap.len,
 719                 (void *)(long)event->mmap.pgoff,
 720                 event->mmap.filename);
 721
 722         if (thread == NULL || map == NULL) {
 723                 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
 724                 return 0;
 725         }
 726
 727         thread__insert_map(thread, map);
 728         total_mmap++;
 729
 730         return 0;
 731 }
 732
 733 static int
 734 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 735 {
 736         struct thread *thread = threads__findnew(event->comm.pid);
 737
 738         dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
 739                 (void *)(offset + head),
 740                 (void *)(long)(event->header.size),
 741                 event->comm.comm, event->comm.pid);
 742
 743         if (thread == NULL ||
 744             thread__set_comm_adjust(thread, event->comm.comm)) {
 745                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 746                 return -1;
 747         }
 748         total_comm++;
 749
 750         return 0;
 751 }
 752
 753 static int
 754 process_task_event(event_t *event, unsigned long offset, unsigned long head)
 755 {
 756         struct thread *thread = threads__findnew(event->fork.pid);
 757         struct thread *parent = threads__findnew(event->fork.ppid);
 758
 759         dump_printf("%p [%p]: PERF_RECORD_%s: (%d:%d):(%d:%d)\n",
 760                 (void *)(offset + head),
 761                 (void *)(long)(event->header.size),
 762                 event->header.type == PERF_RECORD_FORK ? "FORK" : "EXIT",
 763                 event->fork.pid, event->fork.tid,
 764                 event->fork.ppid, event->fork.ptid);
 765
 766         /*
 767          * A thread clone will have the same PID for both
 768          * parent and child.
 769          */
 770         if (thread == parent)
 771                 return 0;
 772
 773         if (event->header.type == PERF_RECORD_EXIT)
 774                 return 0;
 775
 776         if (!thread || !parent || thread__fork(thread, parent)) {
 777                 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
 778                 return -1;
 779         }
 780         total_fork++;
 781
 782         return 0;
 783 }
 784
 785 static int
 786 process_lost_event(event_t *event, unsigned long offset, unsigned long head)
 787 {
 788         dump_printf("%p [%p]: PERF_RECORD_LOST: id:%Ld: lost:%Ld\n",
 789                 (void *)(offset + head),
 790                 (void *)(long)(event->header.size),
 791                 event->lost.id,
 792                 event->lost.lost);
 793
 794         total_lost += event->lost.lost;
 795
 796         return 0;
 797 }
 798
 799 static int
 800 process_read_event(event_t *event, unsigned long offset, unsigned long head)
 801 {
 802         struct perf_event_attr *attr;
 803
 804         attr = perf_header__find_attr(event->read.id, header);
 805
 806         if (show_threads) {
 807                 const char *name = attr ? __event_name(attr->type, attr->config)
 808                                    : "unknown";
 809                 perf_read_values_add_value(&show_threads_values,
 810                                            event->read.pid, event->read.tid,
 811                                            event->read.id,
 812                                            name,
 813                                            event->read.value);
 814         }
 815
 816         dump_printf("%p [%p]: PERF_RECORD_READ: %d %d %s %Lu\n",
 817                         (void *)(offset + head),
 818                         (void *)(long)(event->header.size),
 819                         event->read.pid,
 820                         event->read.tid,
 821                         attr ? __event_name(attr->type, attr->config)
 822                              : "FAIL",
 823                         event->read.value);
 824
 825         return 0;
 826 }
 827
 828 static int sample_type_check(u64 type)
 829 {
 830         sample_type = type;
 831
 832         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 833                 if (sort__has_parent) {
 834                         fprintf(stderr, "selected --sort parent, but no"
 835                                         " callchain data. Did you call"
 836                                         " perf record without -g?\n");
 837                         return -1;
 838                 }
 839                 if (callchain) {
 840                         fprintf(stderr, "selected -g but no callchain data."
 841                                         " Did you call perf record without"
 842                                         " -g?\n");
 843                         return -1;
 844                 }
 845         } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
 846                         callchain = 1;
 847                         if (register_callchain_param(&callchain_param) < 0) {
 848                                 fprintf(stderr, "Can't register callchain"
 849                                                 " params\n");
 850                                 return -1;
 851                         }
 852         }
 853
 854         return 0;
 855 }
 856
 857 static struct perf_file_handler file_handler = {
 858         .process_sample_event   = process_sample_event,
 859         .process_mmap_event     = process_mmap_event,
 860         .process_comm_event     = process_comm_event,
 861         .process_exit_event     = process_task_event,
 862         .process_fork_event     = process_task_event,
 863         .process_lost_event     = process_lost_event,
 864         .process_read_event     = process_read_event,
 865         .sample_type_check      = sample_type_check,
 866 };
 867
 868
 869 static int __cmd_report(void)
 870 {
 871         struct thread *idle;
 872         int ret;
 873
 874         idle = register_idle_thread();
 875         thread__comm_adjust(idle);
 876
 877         if (show_threads)
 878                 perf_read_values_init(&show_threads_values);
 879
 880         register_perf_file_handler(&file_handler);
 881
 882         ret = mmap_dispatch_perf_file(&header, input_name, force, full_paths,
 883                                       &cwdlen, &cwd);
 884         if (ret)
 885                 return ret;
 886
 887         dump_printf("      IP events: %10ld\n", total);
 888         dump_printf("    mmap events: %10ld\n", total_mmap);
 889         dump_printf("    comm events: %10ld\n", total_comm);
 890         dump_printf("    fork events: %10ld\n", total_fork);
 891         dump_printf("    lost events: %10ld\n", total_lost);
 892         dump_printf(" unknown events: %10ld\n", file_handler.total_unknown);
 893
 894         if (dump_trace)
 895                 return 0;
 896
 897         if (verbose > 3)
 898                 threads__fprintf(stdout);
 899
 900         if (verbose > 2)
 901                 dsos__fprintf(stdout);
 902
 903         collapse__resort();
 904         output__resort(total);
 905         output__fprintf(stdout, total);
 906
 907         if (show_threads)
 908                 perf_read_values_destroy(&show_threads_values);
 909
 910         return ret;
 911 }
 912
 913 static int
 914 parse_callchain_opt(const struct option *opt __used, const char *arg,
 915                     int unset __used)
 916 {
 917         char *tok;
 918         char *endptr;
 919
 920         callchain = 1;
 921
 922         if (!arg)
 923                 return 0;
 924
 925         tok = strtok((char *)arg, ",");
 926         if (!tok)
 927                 return -1;
 928
 929         /* get the output mode */
 930         if (!strncmp(tok, "graph", strlen(arg)))
 931                 callchain_param.mode = CHAIN_GRAPH_ABS;
 932
 933         else if (!strncmp(tok, "flat", strlen(arg)))
 934                 callchain_param.mode = CHAIN_FLAT;
 935
 936         else if (!strncmp(tok, "fractal", strlen(arg)))
 937                 callchain_param.mode = CHAIN_GRAPH_REL;
 938
 939         else if (!strncmp(tok, "none", strlen(arg))) {
 940                 callchain_param.mode = CHAIN_NONE;
 941                 callchain = 0;
 942
 943                 return 0;
 944         }
 945
 946         else
 947                 return -1;
 948
 949         /* get the min percentage */
 950         tok = strtok(NULL, ",");
 951         if (!tok)
 952                 goto setup;
 953
 954         callchain_param.min_percent = strtod(tok, &endptr);
 955         if (tok == endptr)
 956                 return -1;
 957
 958 setup:
 959         if (register_callchain_param(&callchain_param) < 0) {
 960                 fprintf(stderr, "Can't register callchain params\n");
 961                 return -1;
 962         }
 963         return 0;
 964 }
 965
 966 //static const char * const report_usage[] = {
 967 const char * const report_usage[] = {
 968         "perf report [<options>] <command>",
 969         NULL
 970 };
 971
 972 static const struct option options[] = {
 973         OPT_STRING('i', "input", &input_name, "file",
 974                     "input file name"),
 975         OPT_BOOLEAN('v', "verbose", &verbose,
 976                     "be more verbose (show symbol address, etc)"),
 977         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 978                     "dump raw trace in ASCII"),
 979         OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
 980         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 981         OPT_BOOLEAN('m', "modules", &modules,
 982                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 983         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 984                     "Show a column with the number of samples"),
 985         OPT_BOOLEAN('T', "threads", &show_threads,
 986                     "Show per-thread event counters"),
 987         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 988                    "pretty printing style key: normal raw"),
 989         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 990                    "sort by key(s): pid, comm, dso, symbol, parent"),
 991         OPT_BOOLEAN('P', "full-paths", &full_paths,
 992                     "Don't shorten the pathnames taking into account the cwd"),
 993         OPT_STRING('p', "parent", &parent_pattern, "regex",
 994                    "regex filter to identify parent, see: '--sort parent'"),
 995         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 996                     "Only display entries with parent-match"),
 997         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 998                      "Display callchains using output_type and min percent threshold. "
 999                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
1000         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
1001                    "only consider symbols in these dsos"),
1002         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
1003                    "only consider symbols in these comms"),
1004         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
1005                    "only consider these symbols"),
1006         OPT_STRING('w', "column-widths", &col_width_list_str,
1007                    "width[,width...]",
1008                    "don't try to adjust column width, use these fixed values"),
1009         OPT_STRING('t', "field-separator", &field_sep, "separator",
1010                    "separator for columns, no spaces will be added between "
1011                    "columns '.' is reserved."),
1012         OPT_END()
1013 };
1014
1015 static void setup_sorting(void)
1016 {
1017         char *tmp, *tok, *str = strdup(sort_order);
1018
1019         for (tok = strtok_r(str, ", ", &tmp);
1020                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
1021                 if (sort_dimension__add(tok) < 0) {
1022                         error("Unknown --sort key: `%s'", tok);
1023                         usage_with_options(report_usage, options);
1024                 }
1025         }
1026
1027         free(str);
1028 }
1029
1030 static void setup_list(struct strlist **list, const char *list_str,
1031                        struct sort_entry *se, const char *list_name,
1032                        FILE *fp)
1033 {
1034         if (list_str) {
1035                 *list = strlist__new(true, list_str);
1036                 if (!*list) {
1037                         fprintf(stderr, "problems parsing %s list\n",
1038                                 list_name);
1039                         exit(129);
1040                 }
1041                 if (strlist__nr_entries(*list) == 1) {
1042                         fprintf(fp, "# %s: %s\n", list_name,
1043                                 strlist__entry(*list, 0)->s);
1044                         se->elide = true;
1045                 }
1046         }
1047 }
1048
1049 int cmd_report(int argc, const char **argv, const char *prefix __used)
1050 {
1051         symbol__init();
1052
1053         argc = parse_options(argc, argv, options, report_usage, 0);
1054
1055         setup_sorting();
1056
1057         if (parent_pattern != default_parent_pattern) {
1058                 sort_dimension__add("parent");
1059                 sort_parent.elide = 1;
1060         } else
1061                 exclude_other = 0;
1062
1063         /*
1064          * Any (unrecognized) arguments left?
1065          */
1066         if (argc)
1067                 usage_with_options(report_usage, options);
1068
1069         setup_pager();
1070
1071         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
1072         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
1073         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
1074
1075         if (field_sep && *field_sep == '.') {
1076                 fputs("'.' is the only non valid --field-separator argument\n",
1077                       stderr);
1078                 exit(129);
1079         }
1080
1081         return __cmd_report();
1082 }