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 #include "util/process_events.h"
  34
  35 static char             const *input_name = "perf.data";
  36
  37 static char             *dso_list_str, *comm_list_str, *sym_list_str,
  38                         *col_width_list_str;
  39 static struct strlist   *dso_list, *comm_list, *sym_list;
  40
  41 static int              force;
  42
  43 static int              full_paths;
  44 static int              show_nr_samples;
  45
  46 static int              show_threads;
  47 static struct perf_read_values  show_threads_values;
  48
  49 static char             default_pretty_printing_style[] = "normal";
  50 static char             *pretty_printing_style = default_pretty_printing_style;
  51
  52 static int              exclude_other = 1;
  53
  54 static char             callchain_default_opt[] = "fractal,0.5";
  55
  56 static struct perf_header *header;
  57
  58 static u64              sample_type;
  59
  60 struct symbol_conf      symbol_conf;
  61
  62
  63 static size_t
  64 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  65 {
  66         int i;
  67         int ret;
  68
  69         ret = fprintf(fp, "            ");
  70
  71         for (i = 0; i < left_margin; i++)
  72                 ret += fprintf(fp, " ");
  73
  74         return ret;
  75 }
  76
  77 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  78                                           int left_margin)
  79 {
  80         int i;
  81         size_t ret = 0;
  82
  83         ret += callchain__fprintf_left_margin(fp, left_margin);
  84
  85         for (i = 0; i < depth; i++)
  86                 if (depth_mask & (1 << i))
  87                         ret += fprintf(fp, "|          ");
  88                 else
  89                         ret += fprintf(fp, "           ");
  90
  91         ret += fprintf(fp, "\n");
  92
  93         return ret;
  94 }
  95 static size_t
  96 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  97                        int depth_mask, int count, u64 total_samples,
  98                        int hits, int left_margin)
  99 {
 100         int i;
 101         size_t ret = 0;
 102
 103         ret += callchain__fprintf_left_margin(fp, left_margin);
 104         for (i = 0; i < depth; i++) {
 105                 if (depth_mask & (1 << i))
 106                         ret += fprintf(fp, "|");
 107                 else
 108                         ret += fprintf(fp, " ");
 109                 if (!count && i == depth - 1) {
 110                         double percent;
 111
 112                         percent = hits * 100.0 / total_samples;
 113                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 114                 } else
 115                         ret += fprintf(fp, "%s", "          ");
 116         }
 117         if (chain->sym)
 118                 ret += fprintf(fp, "%s\n", chain->sym->name);
 119         else
 120                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 121
 122         return ret;
 123 }
 124
 125 static struct symbol *rem_sq_bracket;
 126 static struct callchain_list rem_hits;
 127
 128 static void init_rem_hits(void)
 129 {
 130         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 131         if (!rem_sq_bracket) {
 132                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 133                 return;
 134         }
 135
 136         strcpy(rem_sq_bracket->name, "[...]");
 137         rem_hits.sym = rem_sq_bracket;
 138 }
 139
 140 static size_t
 141 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 142                            u64 total_samples, int depth, int depth_mask,
 143                            int left_margin)
 144 {
 145         struct rb_node *node, *next;
 146         struct callchain_node *child;
 147         struct callchain_list *chain;
 148         int new_depth_mask = depth_mask;
 149         u64 new_total;
 150         u64 remaining;
 151         size_t ret = 0;
 152         int i;
 153
 154         if (callchain_param.mode == CHAIN_GRAPH_REL)
 155                 new_total = self->children_hit;
 156         else
 157                 new_total = total_samples;
 158
 159         remaining = new_total;
 160
 161         node = rb_first(&self->rb_root);
 162         while (node) {
 163                 u64 cumul;
 164
 165                 child = rb_entry(node, struct callchain_node, rb_node);
 166                 cumul = cumul_hits(child);
 167                 remaining -= cumul;
 168
 169                 /*
 170                  * The depth mask manages the output of pipes that show
 171                  * the depth. We don't want to keep the pipes of the current
 172                  * level for the last child of this depth.
 173                  * Except if we have remaining filtered hits. They will
 174                  * supersede the last child
 175                  */
 176                 next = rb_next(node);
 177                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 178                         new_depth_mask &= ~(1 << (depth - 1));
 179
 180                 /*
 181                  * But we keep the older depth mask for the line seperator
 182                  * to keep the level link until we reach the last child
 183                  */
 184                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 185                                                    left_margin);
 186                 i = 0;
 187                 list_for_each_entry(chain, &child->val, list) {
 188                         if (chain->ip >= PERF_CONTEXT_MAX)
 189                                 continue;
 190                         ret += ipchain__fprintf_graph(fp, chain, depth,
 191                                                       new_depth_mask, i++,
 192                                                       new_total,
 193                                                       cumul,
 194                                                       left_margin);
 195                 }
 196                 ret += __callchain__fprintf_graph(fp, child, new_total,
 197                                                   depth + 1,
 198                                                   new_depth_mask | (1 << depth),
 199                                                   left_margin);
 200                 node = next;
 201         }
 202
 203         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 204                 remaining && remaining != new_total) {
 205
 206                 if (!rem_sq_bracket)
 207                         return ret;
 208
 209                 new_depth_mask &= ~(1 << (depth - 1));
 210
 211                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 212                                               new_depth_mask, 0, new_total,
 213                                               remaining, left_margin);
 214         }
 215
 216         return ret;
 217 }
 218
 219
 220 static size_t
 221 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 222                          u64 total_samples, int left_margin)
 223 {
 224         struct callchain_list *chain;
 225         bool printed = false;
 226         int i = 0;
 227         int ret = 0;
 228
 229         list_for_each_entry(chain, &self->val, list) {
 230                 if (chain->ip >= PERF_CONTEXT_MAX)
 231                         continue;
 232
 233                 if (!i++ && sort__first_dimension == SORT_SYM)
 234                         continue;
 235
 236                 if (!printed) {
 237                         ret += callchain__fprintf_left_margin(fp, left_margin);
 238                         ret += fprintf(fp, "|\n");
 239                         ret += callchain__fprintf_left_margin(fp, left_margin);
 240                         ret += fprintf(fp, "---");
 241
 242                         left_margin += 3;
 243                         printed = true;
 244                 } else
 245                         ret += callchain__fprintf_left_margin(fp, left_margin);
 246
 247                 if (chain->sym)
 248                         ret += fprintf(fp, " %s\n", chain->sym->name);
 249                 else
 250                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 251         }
 252
 253         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 254
 255         return ret;
 256 }
 257
 258 static size_t
 259 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 260                         u64 total_samples)
 261 {
 262         struct callchain_list *chain;
 263         size_t ret = 0;
 264
 265         if (!self)
 266                 return 0;
 267
 268         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 269
 270
 271         list_for_each_entry(chain, &self->val, list) {
 272                 if (chain->ip >= PERF_CONTEXT_MAX)
 273                         continue;
 274                 if (chain->sym)
 275                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 276                 else
 277                         ret += fprintf(fp, "                %p\n",
 278                                         (void *)(long)chain->ip);
 279         }
 280
 281         return ret;
 282 }
 283
 284 static size_t
 285 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 286                               u64 total_samples, int left_margin)
 287 {
 288         struct rb_node *rb_node;
 289         struct callchain_node *chain;
 290         size_t ret = 0;
 291
 292         rb_node = rb_first(&self->sorted_chain);
 293         while (rb_node) {
 294                 double percent;
 295
 296                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 297                 percent = chain->hit * 100.0 / total_samples;
 298                 switch (callchain_param.mode) {
 299                 case CHAIN_FLAT:
 300                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 301                                                      percent);
 302                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 303                         break;
 304                 case CHAIN_GRAPH_ABS: /* Falldown */
 305                 case CHAIN_GRAPH_REL:
 306                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 307                                                         left_margin);
 308                 case CHAIN_NONE:
 309                 default:
 310                         break;
 311                 }
 312                 ret += fprintf(fp, "\n");
 313                 rb_node = rb_next(rb_node);
 314         }
 315
 316         return ret;
 317 }
 318
 319 static size_t
 320 hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
 321 {
 322         struct sort_entry *se;
 323         size_t ret;
 324
 325         if (exclude_other && !self->parent)
 326                 return 0;
 327
 328         if (total_samples)
 329                 ret = percent_color_fprintf(fp,
 330                                             field_sep ? "%.2f" : "   %6.2f%%",
 331                                         (self->count * 100.0) / total_samples);
 332         else
 333                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 334
 335         if (show_nr_samples) {
 336                 if (field_sep)
 337                         fprintf(fp, "%c%lld", *field_sep, self->count);
 338                 else
 339                         fprintf(fp, "%11lld", self->count);
 340         }
 341
 342         list_for_each_entry(se, &hist_entry__sort_list, list) {
 343                 if (se->elide)
 344                         continue;
 345
 346                 fprintf(fp, "%s", field_sep ?: "  ");
 347                 ret += se->print(fp, self, se->width ? *se->width : 0);
 348         }
 349
 350         ret += fprintf(fp, "\n");
 351
 352         if (callchain) {
 353                 int left_margin = 0;
 354
 355                 if (sort__first_dimension == SORT_COMM) {
 356                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 357                                                 list);
 358                         left_margin = se->width ? *se->width : 0;
 359                         left_margin -= thread__comm_len(self->thread);
 360                 }
 361
 362                 hist_entry_callchain__fprintf(fp, self, total_samples,
 363                                               left_margin);
 364         }
 365
 366         return ret;
 367 }
 368
 369 /*
 370  *
 371  */
 372
 373 static void dso__calc_col_width(struct dso *self)
 374 {
 375         if (!col_width_list_str && !field_sep &&
 376             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 377                 unsigned int slen = strlen(self->name);
 378                 if (slen > dsos__col_width)
 379                         dsos__col_width = slen;
 380         }
 381
 382         self->slen_calculated = 1;
 383 }
 384
 385 static void thread__comm_adjust(struct thread *self)
 386 {
 387         char *comm = self->comm;
 388
 389         if (!col_width_list_str && !field_sep &&
 390             (!comm_list || strlist__has_entry(comm_list, comm))) {
 391                 unsigned int slen = strlen(comm);
 392
 393                 if (slen > comms__col_width) {
 394                         comms__col_width = slen;
 395                         threads__col_width = slen + 6;
 396                 }
 397         }
 398 }
 399
 400 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 401 {
 402         int ret = thread__set_comm(self, comm);
 403
 404         if (ret)
 405                 return ret;
 406
 407         thread__comm_adjust(self);
 408
 409         return 0;
 410 }
 411
 412
 413 static struct symbol *
 414 resolve_symbol(struct thread *thread, struct map **mapp, u64 *ipp)
 415 {
 416         struct map *map = mapp ? *mapp : NULL;
 417         u64 ip = *ipp;
 418
 419         if (map)
 420                 goto got_map;
 421
 422         if (!thread)
 423                 return NULL;
 424
 425         map = thread__find_map(thread, ip);
 426         if (map != NULL) {
 427                 /*
 428                  * We have to do this here as we may have a dso
 429                  * with no symbol hit that has a name longer than
 430                  * the ones with symbols sampled.
 431                  */
 432                 if (!sort_dso.elide && !map->dso->slen_calculated)
 433                         dso__calc_col_width(map->dso);
 434
 435                 if (mapp)
 436                         *mapp = map;
 437 got_map:
 438                 ip = map->map_ip(map, ip);
 439         } else {
 440                 /*
 441                  * If this is outside of all known maps,
 442                  * and is a negative address, try to look it
 443                  * up in the kernel dso, as it might be a
 444                  * vsyscall or vdso (which executes in user-mode).
 445                  *
 446                  * XXX This is nasty, we should have a symbol list in
 447                  * the "[vdso]" dso, but for now lets use the old
 448                  * trick of looking in the whole kernel symbol list.
 449                  */
 450                 if ((long long)ip < 0)
 451                         return kernel_maps__find_function(ip, mapp, NULL);
 452         }
 453         dump_printf(" ...... dso: %s\n",
 454                     map ? map->dso->long_name : "<not found>");
 455         dump_printf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
 456         *ipp  = ip;
 457
 458         return map ? map__find_function(map, ip, NULL) : NULL;
 459 }
 460
 461 static int call__match(struct symbol *sym)
 462 {
 463         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 464                 return 1;
 465
 466         return 0;
 467 }
 468
 469 static struct symbol **resolve_callchain(struct thread *thread,
 470                                          struct ip_callchain *chain,
 471                                          struct symbol **parent)
 472 {
 473         u64 context = PERF_CONTEXT_MAX;
 474         struct symbol **syms = NULL;
 475         unsigned int i;
 476
 477         if (callchain) {
 478                 syms = calloc(chain->nr, sizeof(*syms));
 479                 if (!syms) {
 480                         fprintf(stderr, "Can't allocate memory for symbols\n");
 481                         exit(-1);
 482                 }
 483         }
 484
 485         for (i = 0; i < chain->nr; i++) {
 486                 u64 ip = chain->ips[i];
 487                 struct symbol *sym = NULL;
 488
 489                 if (ip >= PERF_CONTEXT_MAX) {
 490                         context = ip;
 491                         continue;
 492                 }
 493
 494                 switch (context) {
 495                 case PERF_CONTEXT_HV:
 496                         break;
 497                 case PERF_CONTEXT_KERNEL:
 498                         sym = kernel_maps__find_function(ip, NULL, NULL);
 499                         break;
 500                 default:
 501                         sym = resolve_symbol(thread, NULL, &ip);
 502                         break;
 503                 }
 504
 505                 if (sym) {
 506                         if (sort__has_parent && !*parent && call__match(sym))
 507                                 *parent = sym;
 508                         if (!callchain)
 509                                 break;
 510                         syms[i] = sym;
 511                 }
 512         }
 513
 514         return syms;
 515 }
 516
 517 /*
 518  * collect histogram counts
 519  */
 520
 521 static int
 522 hist_entry__add(struct thread *thread, struct map *map,
 523                 struct symbol *sym, u64 ip, struct ip_callchain *chain,
 524                 char level, u64 count)
 525 {
 526         struct symbol **syms = NULL, *parent = NULL;
 527         bool hit;
 528         struct hist_entry *he;
 529
 530         if ((sort__has_parent || callchain) && chain)
 531                 syms = resolve_callchain(thread, chain, &parent);
 532
 533         he = __hist_entry__add(thread, map, sym, parent,
 534                                ip, count, level, &hit);
 535         if (he == NULL)
 536                 return -ENOMEM;
 537
 538         if (hit)
 539                 he->count += count;
 540
 541         if (callchain) {
 542                 if (!hit)
 543                         callchain_init(&he->callchain);
 544                 append_chain(&he->callchain, chain, syms);
 545                 free(syms);
 546         }
 547
 548         return 0;
 549 }
 550
 551 static size_t output__fprintf(FILE *fp, u64 total_samples)
 552 {
 553         struct hist_entry *pos;
 554         struct sort_entry *se;
 555         struct rb_node *nd;
 556         size_t ret = 0;
 557         unsigned int width;
 558         char *col_width = col_width_list_str;
 559         int raw_printing_style;
 560
 561         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 562
 563         init_rem_hits();
 564
 565         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 566         fprintf(fp, "#\n");
 567
 568         fprintf(fp, "# Overhead");
 569         if (show_nr_samples) {
 570                 if (field_sep)
 571                         fprintf(fp, "%cSamples", *field_sep);
 572                 else
 573                         fputs("  Samples  ", fp);
 574         }
 575         list_for_each_entry(se, &hist_entry__sort_list, list) {
 576                 if (se->elide)
 577                         continue;
 578                 if (field_sep) {
 579                         fprintf(fp, "%c%s", *field_sep, se->header);
 580                         continue;
 581                 }
 582                 width = strlen(se->header);
 583                 if (se->width) {
 584                         if (col_width_list_str) {
 585                                 if (col_width) {
 586                                         *se->width = atoi(col_width);
 587                                         col_width = strchr(col_width, ',');
 588                                         if (col_width)
 589                                                 ++col_width;
 590                                 }
 591                         }
 592                         width = *se->width = max(*se->width, width);
 593                 }
 594                 fprintf(fp, "  %*s", width, se->header);
 595         }
 596         fprintf(fp, "\n");
 597
 598         if (field_sep)
 599                 goto print_entries;
 600
 601         fprintf(fp, "# ........");
 602         if (show_nr_samples)
 603                 fprintf(fp, " ..........");
 604         list_for_each_entry(se, &hist_entry__sort_list, list) {
 605                 unsigned int i;
 606
 607                 if (se->elide)
 608                         continue;
 609
 610                 fprintf(fp, "  ");
 611                 if (se->width)
 612                         width = *se->width;
 613                 else
 614                         width = strlen(se->header);
 615                 for (i = 0; i < width; i++)
 616                         fprintf(fp, ".");
 617         }
 618         fprintf(fp, "\n");
 619
 620         fprintf(fp, "#\n");
 621
 622 print_entries:
 623         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 624                 pos = rb_entry(nd, struct hist_entry, rb_node);
 625                 ret += hist_entry__fprintf(fp, pos, total_samples);
 626         }
 627
 628         if (sort_order == default_sort_order &&
 629                         parent_pattern == default_parent_pattern) {
 630                 fprintf(fp, "#\n");
 631                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 632                 fprintf(fp, "#\n");
 633         }
 634         fprintf(fp, "\n");
 635
 636         free(rem_sq_bracket);
 637
 638         if (show_threads)
 639                 perf_read_values_display(fp, &show_threads_values,
 640                                          raw_printing_style);
 641
 642         return ret;
 643 }
 644
 645 static int validate_chain(struct ip_callchain *chain, event_t *event)
 646 {
 647         unsigned int chain_size;
 648
 649         chain_size = event->header.size;
 650         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 651
 652         if (chain->nr*sizeof(u64) > chain_size)
 653                 return -1;
 654
 655         return 0;
 656 }
 657
 658 static int
 659 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 660 {
 661         char level;
 662         struct symbol *sym = NULL;
 663         u64 ip = event->ip.ip;
 664         u64 period = 1;
 665         struct map *map = NULL;
 666         void *more_data = event->ip.__more_data;
 667         struct ip_callchain *chain = NULL;
 668         int cpumode;
 669         struct thread *thread = threads__findnew(event->ip.pid);
 670
 671         if (sample_type & PERF_SAMPLE_PERIOD) {
 672                 period = *(u64 *)more_data;
 673                 more_data += sizeof(u64);
 674         }
 675
 676         dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
 677                 (void *)(offset + head),
 678                 (void *)(long)(event->header.size),
 679                 event->header.misc,
 680                 event->ip.pid, event->ip.tid,
 681                 (void *)(long)ip,
 682                 (long long)period);
 683
 684         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 685                 unsigned int i;
 686
 687                 chain = (void *)more_data;
 688
 689                 dump_printf("... chain: nr:%Lu\n", chain->nr);
 690
 691                 if (validate_chain(chain, event) < 0) {
 692                         pr_debug("call-chain problem with event, "
 693                                  "skipping it.\n");
 694                         return 0;
 695                 }
 696
 697                 if (dump_trace) {
 698                         for (i = 0; i < chain->nr; i++)
 699                                 dump_printf("..... %2d: %016Lx\n", i, chain->ips[i]);
 700                 }
 701         }
 702
 703         if (thread == NULL) {
 704                 pr_debug("problem processing %d event, skipping it.\n",
 705                         event->header.type);
 706                 return -1;
 707         }
 708
 709         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 710
 711         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 712                 return 0;
 713
 714         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 715
 716         if (cpumode == PERF_RECORD_MISC_KERNEL) {
 717                 level = 'k';
 718                 sym = kernel_maps__find_function(ip, &map, NULL);
 719                 dump_printf(" ...... dso: %s\n",
 720                             map ? map->dso->long_name : "<not found>");
 721         } else if (cpumode == PERF_RECORD_MISC_USER) {
 722                 level = '.';
 723                 sym = resolve_symbol(thread, &map, &ip);
 724
 725         } else {
 726                 level = 'H';
 727                 dump_printf(" ...... dso: [hypervisor]\n");
 728         }
 729
 730         if (dso_list &&
 731             (!map || !map->dso ||
 732              !(strlist__has_entry(dso_list, map->dso->short_name) ||
 733                (map->dso->short_name != map->dso->long_name &&
 734                 strlist__has_entry(dso_list, map->dso->long_name)))))
 735                 return 0;
 736
 737         if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
 738                 return 0;
 739
 740         if (hist_entry__add(thread, map, sym, ip,
 741                             chain, level, period)) {
 742                 pr_debug("problem incrementing symbol count, skipping event\n");
 743                 return -1;
 744         }
 745
 746         total += period;
 747
 748         return 0;
 749 }
 750
 751 static int
 752 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 753 {
 754         struct thread *thread = threads__findnew(event->comm.pid);
 755
 756         dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
 757                 (void *)(offset + head),
 758                 (void *)(long)(event->header.size),
 759                 event->comm.comm, event->comm.pid);
 760
 761         if (thread == NULL ||
 762             thread__set_comm_adjust(thread, event->comm.comm)) {
 763                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 764                 return -1;
 765         }
 766         total_comm++;
 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();
 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,
 869                                       full_paths, &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);
 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", &symbol_conf.vmlinux_name,
 966                    "file", "vmlinux pathname"),
 967         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 968         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 969                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 970         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 971                     "Show a column with the number of samples"),
 972         OPT_BOOLEAN('T', "threads", &show_threads,
 973                     "Show per-thread event counters"),
 974         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 975                    "pretty printing style key: normal raw"),
 976         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 977                    "sort by key(s): pid, comm, dso, symbol, parent"),
 978         OPT_BOOLEAN('P', "full-paths", &full_paths,
 979                     "Don't shorten the pathnames taking into account the cwd"),
 980         OPT_STRING('p', "parent", &parent_pattern, "regex",
 981                    "regex filter to identify parent, see: '--sort parent'"),
 982         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 983                     "Only display entries with parent-match"),
 984         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 985                      "Display callchains using output_type and min percent threshold. "
 986                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 987         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 988                    "only consider symbols in these dsos"),
 989         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 990                    "only consider symbols in these comms"),
 991         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 992                    "only consider these symbols"),
 993         OPT_STRING('w', "column-widths", &col_width_list_str,
 994                    "width[,width...]",
 995                    "don't try to adjust column width, use these fixed values"),
 996         OPT_STRING('t', "field-separator", &field_sep, "separator",
 997                    "separator for columns, no spaces will be added between "
 998                    "columns '.' is reserved."),
 999         OPT_END()
1000 };
1001
1002 static void setup_sorting(void)
1003 {
1004         char *tmp, *tok, *str = strdup(sort_order);
1005
1006         for (tok = strtok_r(str, ", ", &tmp);
1007                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
1008                 if (sort_dimension__add(tok) < 0) {
1009                         error("Unknown --sort key: `%s'", tok);
1010                         usage_with_options(report_usage, options);
1011                 }
1012         }
1013
1014         free(str);
1015 }
1016
1017 static void setup_list(struct strlist **list, const char *list_str,
1018                        struct sort_entry *se, const char *list_name,
1019                        FILE *fp)
1020 {
1021         if (list_str) {
1022                 *list = strlist__new(true, list_str);
1023                 if (!*list) {
1024                         fprintf(stderr, "problems parsing %s list\n",
1025                                 list_name);
1026                         exit(129);
1027                 }
1028                 if (strlist__nr_entries(*list) == 1) {
1029                         fprintf(fp, "# %s: %s\n", list_name,
1030                                 strlist__entry(*list, 0)->s);
1031                         se->elide = true;
1032                 }
1033         }
1034 }
1035
1036 int cmd_report(int argc, const char **argv, const char *prefix __used)
1037 {
1038         if (symbol__init(&symbol_conf) < 0)
1039                 return -1;
1040
1041         argc = parse_options(argc, argv, options, report_usage, 0);
1042
1043         setup_sorting();
1044
1045         if (parent_pattern != default_parent_pattern) {
1046                 sort_dimension__add("parent");
1047                 sort_parent.elide = 1;
1048         } else
1049                 exclude_other = 0;
1050
1051         /*
1052          * Any (unrecognized) arguments left?
1053          */
1054         if (argc)
1055                 usage_with_options(report_usage, options);
1056
1057         setup_pager();
1058
1059         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
1060         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
1061         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
1062
1063         if (field_sep && *field_sep == '.') {
1064                 fputs("'.' is the only non valid --field-separator argument\n",
1065                       stderr);
1066                 exit(129);
1067         }
1068
1069         return __cmd_report();
1070 }