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