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 #include "util/session.h"
  26
  27 #include "util/parse-options.h"
  28 #include "util/parse-events.h"
  29
  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 u64              sample_type;
  56
  57 struct symbol_conf      symbol_conf;
  58
  59
  60 static size_t
  61 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  62 {
  63         int i;
  64         int ret;
  65
  66         ret = fprintf(fp, "            ");
  67
  68         for (i = 0; i < left_margin; i++)
  69                 ret += fprintf(fp, " ");
  70
  71         return ret;
  72 }
  73
  74 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  75                                           int left_margin)
  76 {
  77         int i;
  78         size_t ret = 0;
  79
  80         ret += callchain__fprintf_left_margin(fp, left_margin);
  81
  82         for (i = 0; i < depth; i++)
  83                 if (depth_mask & (1 << i))
  84                         ret += fprintf(fp, "|          ");
  85                 else
  86                         ret += fprintf(fp, "           ");
  87
  88         ret += fprintf(fp, "\n");
  89
  90         return ret;
  91 }
  92 static size_t
  93 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  94                        int depth_mask, int count, u64 total_samples,
  95                        int hits, int left_margin)
  96 {
  97         int i;
  98         size_t ret = 0;
  99
 100         ret += callchain__fprintf_left_margin(fp, left_margin);
 101         for (i = 0; i < depth; i++) {
 102                 if (depth_mask & (1 << i))
 103                         ret += fprintf(fp, "|");
 104                 else
 105                         ret += fprintf(fp, " ");
 106                 if (!count && i == depth - 1) {
 107                         double percent;
 108
 109                         percent = hits * 100.0 / total_samples;
 110                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 111                 } else
 112                         ret += fprintf(fp, "%s", "          ");
 113         }
 114         if (chain->sym)
 115                 ret += fprintf(fp, "%s\n", chain->sym->name);
 116         else
 117                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 118
 119         return ret;
 120 }
 121
 122 static struct symbol *rem_sq_bracket;
 123 static struct callchain_list rem_hits;
 124
 125 static void init_rem_hits(void)
 126 {
 127         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 128         if (!rem_sq_bracket) {
 129                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 130                 return;
 131         }
 132
 133         strcpy(rem_sq_bracket->name, "[...]");
 134         rem_hits.sym = rem_sq_bracket;
 135 }
 136
 137 static size_t
 138 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 139                            u64 total_samples, int depth, int depth_mask,
 140                            int left_margin)
 141 {
 142         struct rb_node *node, *next;
 143         struct callchain_node *child;
 144         struct callchain_list *chain;
 145         int new_depth_mask = depth_mask;
 146         u64 new_total;
 147         u64 remaining;
 148         size_t ret = 0;
 149         int i;
 150
 151         if (callchain_param.mode == CHAIN_GRAPH_REL)
 152                 new_total = self->children_hit;
 153         else
 154                 new_total = total_samples;
 155
 156         remaining = new_total;
 157
 158         node = rb_first(&self->rb_root);
 159         while (node) {
 160                 u64 cumul;
 161
 162                 child = rb_entry(node, struct callchain_node, rb_node);
 163                 cumul = cumul_hits(child);
 164                 remaining -= cumul;
 165
 166                 /*
 167                  * The depth mask manages the output of pipes that show
 168                  * the depth. We don't want to keep the pipes of the current
 169                  * level for the last child of this depth.
 170                  * Except if we have remaining filtered hits. They will
 171                  * supersede the last child
 172                  */
 173                 next = rb_next(node);
 174                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 175                         new_depth_mask &= ~(1 << (depth - 1));
 176
 177                 /*
 178                  * But we keep the older depth mask for the line seperator
 179                  * to keep the level link until we reach the last child
 180                  */
 181                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 182                                                    left_margin);
 183                 i = 0;
 184                 list_for_each_entry(chain, &child->val, list) {
 185                         if (chain->ip >= PERF_CONTEXT_MAX)
 186                                 continue;
 187                         ret += ipchain__fprintf_graph(fp, chain, depth,
 188                                                       new_depth_mask, i++,
 189                                                       new_total,
 190                                                       cumul,
 191                                                       left_margin);
 192                 }
 193                 ret += __callchain__fprintf_graph(fp, child, new_total,
 194                                                   depth + 1,
 195                                                   new_depth_mask | (1 << depth),
 196                                                   left_margin);
 197                 node = next;
 198         }
 199
 200         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 201                 remaining && remaining != new_total) {
 202
 203                 if (!rem_sq_bracket)
 204                         return ret;
 205
 206                 new_depth_mask &= ~(1 << (depth - 1));
 207
 208                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 209                                               new_depth_mask, 0, new_total,
 210                                               remaining, left_margin);
 211         }
 212
 213         return ret;
 214 }
 215
 216
 217 static size_t
 218 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 219                          u64 total_samples, int left_margin)
 220 {
 221         struct callchain_list *chain;
 222         bool printed = false;
 223         int i = 0;
 224         int ret = 0;
 225
 226         list_for_each_entry(chain, &self->val, list) {
 227                 if (chain->ip >= PERF_CONTEXT_MAX)
 228                         continue;
 229
 230                 if (!i++ && sort__first_dimension == SORT_SYM)
 231                         continue;
 232
 233                 if (!printed) {
 234                         ret += callchain__fprintf_left_margin(fp, left_margin);
 235                         ret += fprintf(fp, "|\n");
 236                         ret += callchain__fprintf_left_margin(fp, left_margin);
 237                         ret += fprintf(fp, "---");
 238
 239                         left_margin += 3;
 240                         printed = true;
 241                 } else
 242                         ret += callchain__fprintf_left_margin(fp, left_margin);
 243
 244                 if (chain->sym)
 245                         ret += fprintf(fp, " %s\n", chain->sym->name);
 246                 else
 247                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 248         }
 249
 250         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 251
 252         return ret;
 253 }
 254
 255 static size_t
 256 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 257                         u64 total_samples)
 258 {
 259         struct callchain_list *chain;
 260         size_t ret = 0;
 261
 262         if (!self)
 263                 return 0;
 264
 265         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 266
 267
 268         list_for_each_entry(chain, &self->val, list) {
 269                 if (chain->ip >= PERF_CONTEXT_MAX)
 270                         continue;
 271                 if (chain->sym)
 272                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 273                 else
 274                         ret += fprintf(fp, "                %p\n",
 275                                         (void *)(long)chain->ip);
 276         }
 277
 278         return ret;
 279 }
 280
 281 static size_t
 282 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 283                               u64 total_samples, int left_margin)
 284 {
 285         struct rb_node *rb_node;
 286         struct callchain_node *chain;
 287         size_t ret = 0;
 288
 289         rb_node = rb_first(&self->sorted_chain);
 290         while (rb_node) {
 291                 double percent;
 292
 293                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 294                 percent = chain->hit * 100.0 / total_samples;
 295                 switch (callchain_param.mode) {
 296                 case CHAIN_FLAT:
 297                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 298                                                      percent);
 299                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 300                         break;
 301                 case CHAIN_GRAPH_ABS: /* Falldown */
 302                 case CHAIN_GRAPH_REL:
 303                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 304                                                         left_margin);
 305                 case CHAIN_NONE:
 306                 default:
 307                         break;
 308                 }
 309                 ret += fprintf(fp, "\n");
 310                 rb_node = rb_next(rb_node);
 311         }
 312
 313         return ret;
 314 }
 315
 316 static size_t
 317 hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
 318 {
 319         struct sort_entry *se;
 320         size_t ret;
 321
 322         if (exclude_other && !self->parent)
 323                 return 0;
 324
 325         if (total_samples)
 326                 ret = percent_color_fprintf(fp,
 327                                             field_sep ? "%.2f" : "   %6.2f%%",
 328                                         (self->count * 100.0) / total_samples);
 329         else
 330                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 331
 332         if (show_nr_samples) {
 333                 if (field_sep)
 334                         fprintf(fp, "%c%lld", *field_sep, self->count);
 335                 else
 336                         fprintf(fp, "%11lld", self->count);
 337         }
 338
 339         list_for_each_entry(se, &hist_entry__sort_list, list) {
 340                 if (se->elide)
 341                         continue;
 342
 343                 fprintf(fp, "%s", field_sep ?: "  ");
 344                 ret += se->print(fp, self, se->width ? *se->width : 0);
 345         }
 346
 347         ret += fprintf(fp, "\n");
 348
 349         if (callchain) {
 350                 int left_margin = 0;
 351
 352                 if (sort__first_dimension == SORT_COMM) {
 353                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 354                                                 list);
 355                         left_margin = se->width ? *se->width : 0;
 356                         left_margin -= thread__comm_len(self->thread);
 357                 }
 358
 359                 hist_entry_callchain__fprintf(fp, self, total_samples,
 360                                               left_margin);
 361         }
 362
 363         return ret;
 364 }
 365
 366 /*
 367  *
 368  */
 369
 370 static void dso__calc_col_width(struct dso *self)
 371 {
 372         if (!col_width_list_str && !field_sep &&
 373             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 374                 unsigned int slen = strlen(self->name);
 375                 if (slen > dsos__col_width)
 376                         dsos__col_width = slen;
 377         }
 378
 379         self->slen_calculated = 1;
 380 }
 381
 382 static void thread__comm_adjust(struct thread *self)
 383 {
 384         char *comm = self->comm;
 385
 386         if (!col_width_list_str && !field_sep &&
 387             (!comm_list || strlist__has_entry(comm_list, comm))) {
 388                 unsigned int slen = strlen(comm);
 389
 390                 if (slen > comms__col_width) {
 391                         comms__col_width = slen;
 392                         threads__col_width = slen + 6;
 393                 }
 394         }
 395 }
 396
 397 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 398 {
 399         int ret = thread__set_comm(self, comm);
 400
 401         if (ret)
 402                 return ret;
 403
 404         thread__comm_adjust(self);
 405
 406         return 0;
 407 }
 408
 409 static int call__match(struct symbol *sym)
 410 {
 411         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 412                 return 1;
 413
 414         return 0;
 415 }
 416
 417 static struct symbol **resolve_callchain(struct thread *thread,
 418                                          struct ip_callchain *chain,
 419                                          struct symbol **parent)
 420 {
 421         u8 cpumode = PERF_RECORD_MISC_USER;
 422         struct symbol **syms = NULL;
 423         unsigned int i;
 424
 425         if (callchain) {
 426                 syms = calloc(chain->nr, sizeof(*syms));
 427                 if (!syms) {
 428                         fprintf(stderr, "Can't allocate memory for symbols\n");
 429                         exit(-1);
 430                 }
 431         }
 432
 433         for (i = 0; i < chain->nr; i++) {
 434                 u64 ip = chain->ips[i];
 435                 struct addr_location al;
 436
 437                 if (ip >= PERF_CONTEXT_MAX) {
 438                         switch (ip) {
 439                         case PERF_CONTEXT_HV:
 440                                 cpumode = PERF_RECORD_MISC_HYPERVISOR;  break;
 441                         case PERF_CONTEXT_KERNEL:
 442                                 cpumode = PERF_RECORD_MISC_KERNEL;      break;
 443                         case PERF_CONTEXT_USER:
 444                                 cpumode = PERF_RECORD_MISC_USER;        break;
 445                         default:
 446                                 break;
 447                         }
 448                         continue;
 449                 }
 450
 451                 thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
 452                                            ip, &al, NULL);
 453                 if (al.sym != NULL) {
 454                         if (sort__has_parent && !*parent &&
 455                             call__match(al.sym))
 456                                 *parent = al.sym;
 457                         if (!callchain)
 458                                 break;
 459                         syms[i] = al.sym;
 460                 }
 461         }
 462
 463         return syms;
 464 }
 465
 466 /*
 467  * collect histogram counts
 468  */
 469
 470 static int hist_entry__add(struct addr_location *al,
 471                            struct ip_callchain *chain, u64 count)
 472 {
 473         struct symbol **syms = NULL, *parent = NULL;
 474         bool hit;
 475         struct hist_entry *he;
 476
 477         if ((sort__has_parent || callchain) && chain)
 478                 syms = resolve_callchain(al->thread, chain, &parent);
 479
 480         he = __hist_entry__add(al, parent, count, &hit);
 481         if (he == NULL)
 482                 return -ENOMEM;
 483
 484         if (hit)
 485                 he->count += count;
 486
 487         if (callchain) {
 488                 if (!hit)
 489                         callchain_init(&he->callchain);
 490                 append_chain(&he->callchain, chain, syms);
 491                 free(syms);
 492         }
 493
 494         return 0;
 495 }
 496
 497 static size_t output__fprintf(FILE *fp, u64 total_samples)
 498 {
 499         struct hist_entry *pos;
 500         struct sort_entry *se;
 501         struct rb_node *nd;
 502         size_t ret = 0;
 503         unsigned int width;
 504         char *col_width = col_width_list_str;
 505         int raw_printing_style;
 506
 507         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 508
 509         init_rem_hits();
 510
 511         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 512         fprintf(fp, "#\n");
 513
 514         fprintf(fp, "# Overhead");
 515         if (show_nr_samples) {
 516                 if (field_sep)
 517                         fprintf(fp, "%cSamples", *field_sep);
 518                 else
 519                         fputs("  Samples  ", fp);
 520         }
 521         list_for_each_entry(se, &hist_entry__sort_list, list) {
 522                 if (se->elide)
 523                         continue;
 524                 if (field_sep) {
 525                         fprintf(fp, "%c%s", *field_sep, se->header);
 526                         continue;
 527                 }
 528                 width = strlen(se->header);
 529                 if (se->width) {
 530                         if (col_width_list_str) {
 531                                 if (col_width) {
 532                                         *se->width = atoi(col_width);
 533                                         col_width = strchr(col_width, ',');
 534                                         if (col_width)
 535                                                 ++col_width;
 536                                 }
 537                         }
 538                         width = *se->width = max(*se->width, width);
 539                 }
 540                 fprintf(fp, "  %*s", width, se->header);
 541         }
 542         fprintf(fp, "\n");
 543
 544         if (field_sep)
 545                 goto print_entries;
 546
 547         fprintf(fp, "# ........");
 548         if (show_nr_samples)
 549                 fprintf(fp, " ..........");
 550         list_for_each_entry(se, &hist_entry__sort_list, list) {
 551                 unsigned int i;
 552
 553                 if (se->elide)
 554                         continue;
 555
 556                 fprintf(fp, "  ");
 557                 if (se->width)
 558                         width = *se->width;
 559                 else
 560                         width = strlen(se->header);
 561                 for (i = 0; i < width; i++)
 562                         fprintf(fp, ".");
 563         }
 564         fprintf(fp, "\n");
 565
 566         fprintf(fp, "#\n");
 567
 568 print_entries:
 569         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 570                 pos = rb_entry(nd, struct hist_entry, rb_node);
 571                 ret += hist_entry__fprintf(fp, pos, total_samples);
 572         }
 573
 574         if (sort_order == default_sort_order &&
 575                         parent_pattern == default_parent_pattern) {
 576                 fprintf(fp, "#\n");
 577                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 578                 fprintf(fp, "#\n");
 579         }
 580         fprintf(fp, "\n");
 581
 582         free(rem_sq_bracket);
 583
 584         if (show_threads)
 585                 perf_read_values_display(fp, &show_threads_values,
 586                                          raw_printing_style);
 587
 588         return ret;
 589 }
 590
 591 static int validate_chain(struct ip_callchain *chain, event_t *event)
 592 {
 593         unsigned int chain_size;
 594
 595         chain_size = event->header.size;
 596         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 597
 598         if (chain->nr*sizeof(u64) > chain_size)
 599                 return -1;
 600
 601         return 0;
 602 }
 603
 604 static int process_sample_event(event_t *event, struct perf_session *session __used)
 605 {
 606         struct sample_data data;
 607         int cpumode;
 608         struct addr_location al;
 609         struct thread *thread;
 610
 611         memset(&data, 0, sizeof(data));
 612         data.period = 1;
 613
 614         event__parse_sample(event, sample_type, &data);
 615
 616         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 617                 event->header.misc,
 618                 data.pid, data.tid,
 619                 (void *)(long)data.ip,
 620                 (long long)data.period);
 621
 622         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 623                 unsigned int i;
 624
 625                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 626
 627                 if (validate_chain(data.callchain, event) < 0) {
 628                         pr_debug("call-chain problem with event, "
 629                                  "skipping it.\n");
 630                         return 0;
 631                 }
 632
 633                 if (dump_trace) {
 634                         for (i = 0; i < data.callchain->nr; i++)
 635                                 dump_printf("..... %2d: %016Lx\n",
 636                                             i, data.callchain->ips[i]);
 637                 }
 638         }
 639
 640         thread = threads__findnew(data.pid);
 641         if (thread == NULL) {
 642                 pr_debug("problem processing %d event, skipping it.\n",
 643                         event->header.type);
 644                 return -1;
 645         }
 646
 647         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 648
 649         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 650                 return 0;
 651
 652         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 653
 654         thread__find_addr_location(thread, cpumode,
 655                                    MAP__FUNCTION, data.ip, &al, NULL);
 656         /*
 657          * We have to do this here as we may have a dso with no symbol hit that
 658          * has a name longer than the ones with symbols sampled.
 659          */
 660         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 661                 dso__calc_col_width(al.map->dso);
 662
 663         if (dso_list &&
 664             (!al.map || !al.map->dso ||
 665              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
 666                (al.map->dso->short_name != al.map->dso->long_name &&
 667                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
 668                 return 0;
 669
 670         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 671                 return 0;
 672
 673         if (hist_entry__add(&al, data.callchain, data.period)) {
 674                 pr_debug("problem incrementing symbol count, skipping event\n");
 675                 return -1;
 676         }
 677
 678         event__stats.total += data.period;
 679
 680         return 0;
 681 }
 682
 683 static int process_comm_event(event_t *event, struct perf_session *session __used)
 684 {
 685         struct thread *thread = threads__findnew(event->comm.pid);
 686
 687         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
 688
 689         if (thread == NULL ||
 690             thread__set_comm_adjust(thread, event->comm.comm)) {
 691                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 692                 return -1;
 693         }
 694
 695         return 0;
 696 }
 697
 698 static int process_read_event(event_t *event, struct perf_session *session __used)
 699 {
 700         struct perf_event_attr *attr;
 701
 702         attr = perf_header__find_attr(event->read.id, &session->header);
 703
 704         if (show_threads) {
 705                 const char *name = attr ? __event_name(attr->type, attr->config)
 706                                    : "unknown";
 707                 perf_read_values_add_value(&show_threads_values,
 708                                            event->read.pid, event->read.tid,
 709                                            event->read.id,
 710                                            name,
 711                                            event->read.value);
 712         }
 713
 714         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 715                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 716                     event->read.value);
 717
 718         return 0;
 719 }
 720
 721 static int sample_type_check(u64 type)
 722 {
 723         sample_type = type;
 724
 725         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 726                 if (sort__has_parent) {
 727                         fprintf(stderr, "selected --sort parent, but no"
 728                                         " callchain data. Did you call"
 729                                         " perf record without -g?\n");
 730                         return -1;
 731                 }
 732                 if (callchain) {
 733                         fprintf(stderr, "selected -g but no callchain data."
 734                                         " Did you call perf record without"
 735                                         " -g?\n");
 736                         return -1;
 737                 }
 738         } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
 739                         callchain = 1;
 740                         if (register_callchain_param(&callchain_param) < 0) {
 741                                 fprintf(stderr, "Can't register callchain"
 742                                                 " params\n");
 743                                 return -1;
 744                         }
 745         }
 746
 747         return 0;
 748 }
 749
 750 static struct perf_event_ops event_ops = {
 751         .process_sample_event   = process_sample_event,
 752         .process_mmap_event     = event__process_mmap,
 753         .process_comm_event     = process_comm_event,
 754         .process_exit_event     = event__process_task,
 755         .process_fork_event     = event__process_task,
 756         .process_lost_event     = event__process_lost,
 757         .process_read_event     = process_read_event,
 758         .sample_type_check      = sample_type_check,
 759 };
 760
 761
 762 static int __cmd_report(void)
 763 {
 764         int ret;
 765         struct perf_session *session;
 766
 767         session = perf_session__new(input_name, O_RDONLY, force);
 768         if (session == NULL)
 769                 return -ENOMEM;
 770
 771         if (show_threads)
 772                 perf_read_values_init(&show_threads_values);
 773
 774         ret = perf_session__process_events(session, &event_ops, full_paths,
 775                                            &event__cwdlen, &event__cwd);
 776         if (ret)
 777                 goto out_delete;
 778
 779         if (dump_trace) {
 780                 event__print_totals();
 781                 goto out_delete;
 782         }
 783
 784         if (verbose > 3)
 785                 threads__fprintf(stdout);
 786
 787         if (verbose > 2)
 788                 dsos__fprintf(stdout);
 789
 790         collapse__resort();
 791         output__resort(event__stats.total);
 792         output__fprintf(stdout, event__stats.total);
 793
 794         if (show_threads)
 795                 perf_read_values_destroy(&show_threads_values);
 796 out_delete:
 797         perf_session__delete(session);
 798         return ret;
 799 }
 800
 801 static int
 802 parse_callchain_opt(const struct option *opt __used, const char *arg,
 803                     int unset __used)
 804 {
 805         char *tok;
 806         char *endptr;
 807
 808         callchain = 1;
 809
 810         if (!arg)
 811                 return 0;
 812
 813         tok = strtok((char *)arg, ",");
 814         if (!tok)
 815                 return -1;
 816
 817         /* get the output mode */
 818         if (!strncmp(tok, "graph", strlen(arg)))
 819                 callchain_param.mode = CHAIN_GRAPH_ABS;
 820
 821         else if (!strncmp(tok, "flat", strlen(arg)))
 822                 callchain_param.mode = CHAIN_FLAT;
 823
 824         else if (!strncmp(tok, "fractal", strlen(arg)))
 825                 callchain_param.mode = CHAIN_GRAPH_REL;
 826
 827         else if (!strncmp(tok, "none", strlen(arg))) {
 828                 callchain_param.mode = CHAIN_NONE;
 829                 callchain = 0;
 830
 831                 return 0;
 832         }
 833
 834         else
 835                 return -1;
 836
 837         /* get the min percentage */
 838         tok = strtok(NULL, ",");
 839         if (!tok)
 840                 goto setup;
 841
 842         callchain_param.min_percent = strtod(tok, &endptr);
 843         if (tok == endptr)
 844                 return -1;
 845
 846 setup:
 847         if (register_callchain_param(&callchain_param) < 0) {
 848                 fprintf(stderr, "Can't register callchain params\n");
 849                 return -1;
 850         }
 851         return 0;
 852 }
 853
 854 //static const char * const report_usage[] = {
 855 const char * const report_usage[] = {
 856         "perf report [<options>] <command>",
 857         NULL
 858 };
 859
 860 static const struct option options[] = {
 861         OPT_STRING('i', "input", &input_name, "file",
 862                     "input file name"),
 863         OPT_BOOLEAN('v', "verbose", &verbose,
 864                     "be more verbose (show symbol address, etc)"),
 865         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 866                     "dump raw trace in ASCII"),
 867         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 868                    "file", "vmlinux pathname"),
 869         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 870         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 871                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 872         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 873                     "Show a column with the number of samples"),
 874         OPT_BOOLEAN('T', "threads", &show_threads,
 875                     "Show per-thread event counters"),
 876         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 877                    "pretty printing style key: normal raw"),
 878         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 879                    "sort by key(s): pid, comm, dso, symbol, parent"),
 880         OPT_BOOLEAN('P', "full-paths", &full_paths,
 881                     "Don't shorten the pathnames taking into account the cwd"),
 882         OPT_STRING('p', "parent", &parent_pattern, "regex",
 883                    "regex filter to identify parent, see: '--sort parent'"),
 884         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 885                     "Only display entries with parent-match"),
 886         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 887                      "Display callchains using output_type and min percent threshold. "
 888                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 889         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 890                    "only consider symbols in these dsos"),
 891         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 892                    "only consider symbols in these comms"),
 893         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 894                    "only consider these symbols"),
 895         OPT_STRING('w', "column-widths", &col_width_list_str,
 896                    "width[,width...]",
 897                    "don't try to adjust column width, use these fixed values"),
 898         OPT_STRING('t', "field-separator", &field_sep, "separator",
 899                    "separator for columns, no spaces will be added between "
 900                    "columns '.' is reserved."),
 901         OPT_END()
 902 };
 903
 904 static void setup_sorting(void)
 905 {
 906         char *tmp, *tok, *str = strdup(sort_order);
 907
 908         for (tok = strtok_r(str, ", ", &tmp);
 909                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 910                 if (sort_dimension__add(tok) < 0) {
 911                         error("Unknown --sort key: `%s'", tok);
 912                         usage_with_options(report_usage, options);
 913                 }
 914         }
 915
 916         free(str);
 917 }
 918
 919 static void setup_list(struct strlist **list, const char *list_str,
 920                        struct sort_entry *se, const char *list_name,
 921                        FILE *fp)
 922 {
 923         if (list_str) {
 924                 *list = strlist__new(true, list_str);
 925                 if (!*list) {
 926                         fprintf(stderr, "problems parsing %s list\n",
 927                                 list_name);
 928                         exit(129);
 929                 }
 930                 if (strlist__nr_entries(*list) == 1) {
 931                         fprintf(fp, "# %s: %s\n", list_name,
 932                                 strlist__entry(*list, 0)->s);
 933                         se->elide = true;
 934                 }
 935         }
 936 }
 937
 938 int cmd_report(int argc, const char **argv, const char *prefix __used)
 939 {
 940         if (symbol__init(&symbol_conf) < 0)
 941                 return -1;
 942
 943         argc = parse_options(argc, argv, options, report_usage, 0);
 944
 945         setup_sorting();
 946
 947         if (parent_pattern != default_parent_pattern) {
 948                 sort_dimension__add("parent");
 949                 sort_parent.elide = 1;
 950         } else
 951                 exclude_other = 0;
 952
 953         /*
 954          * Any (unrecognized) arguments left?
 955          */
 956         if (argc)
 957                 usage_with_options(report_usage, options);
 958
 959         setup_pager();
 960
 961         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
 962         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
 963         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
 964
 965         if (field_sep && *field_sep == '.') {
 966                 fputs("'.' is the only non valid --field-separator argument\n",
 967                       stderr);
 968                 exit(129);
 969         }
 970
 971         return __cmd_report();
 972 }