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/data_map.h"
  31 #include "util/thread.h"
  32 #include "util/sort.h"
  33 #include "util/hist.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_session *session;
  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 static int call__match(struct symbol *sym)
 413 {
 414         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 415                 return 1;
 416
 417         return 0;
 418 }
 419
 420 static struct symbol **resolve_callchain(struct thread *thread,
 421                                          struct ip_callchain *chain,
 422                                          struct symbol **parent)
 423 {
 424         u8 cpumode = PERF_RECORD_MISC_USER;
 425         struct symbol **syms = NULL;
 426         unsigned int i;
 427
 428         if (callchain) {
 429                 syms = calloc(chain->nr, sizeof(*syms));
 430                 if (!syms) {
 431                         fprintf(stderr, "Can't allocate memory for symbols\n");
 432                         exit(-1);
 433                 }
 434         }
 435
 436         for (i = 0; i < chain->nr; i++) {
 437                 u64 ip = chain->ips[i];
 438                 struct addr_location al;
 439
 440                 if (ip >= PERF_CONTEXT_MAX) {
 441                         switch (ip) {
 442                         case PERF_CONTEXT_HV:
 443                                 cpumode = PERF_RECORD_MISC_HYPERVISOR;  break;
 444                         case PERF_CONTEXT_KERNEL:
 445                                 cpumode = PERF_RECORD_MISC_KERNEL;      break;
 446                         case PERF_CONTEXT_USER:
 447                                 cpumode = PERF_RECORD_MISC_USER;        break;
 448                         default:
 449                                 break;
 450                         }
 451                         continue;
 452                 }
 453
 454                 thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
 455                                            ip, &al, NULL);
 456                 if (al.sym != NULL) {
 457                         if (sort__has_parent && !*parent &&
 458                             call__match(al.sym))
 459                                 *parent = al.sym;
 460                         if (!callchain)
 461                                 break;
 462                         syms[i] = al.sym;
 463                 }
 464         }
 465
 466         return syms;
 467 }
 468
 469 /*
 470  * collect histogram counts
 471  */
 472
 473 static int hist_entry__add(struct addr_location *al,
 474                            struct ip_callchain *chain, u64 count)
 475 {
 476         struct symbol **syms = NULL, *parent = NULL;
 477         bool hit;
 478         struct hist_entry *he;
 479
 480         if ((sort__has_parent || callchain) && chain)
 481                 syms = resolve_callchain(al->thread, chain, &parent);
 482
 483         he = __hist_entry__add(al, parent, count, &hit);
 484         if (he == NULL)
 485                 return -ENOMEM;
 486
 487         if (hit)
 488                 he->count += count;
 489
 490         if (callchain) {
 491                 if (!hit)
 492                         callchain_init(&he->callchain);
 493                 append_chain(&he->callchain, chain, syms);
 494                 free(syms);
 495         }
 496
 497         return 0;
 498 }
 499
 500 static size_t output__fprintf(FILE *fp, u64 total_samples)
 501 {
 502         struct hist_entry *pos;
 503         struct sort_entry *se;
 504         struct rb_node *nd;
 505         size_t ret = 0;
 506         unsigned int width;
 507         char *col_width = col_width_list_str;
 508         int raw_printing_style;
 509
 510         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 511
 512         init_rem_hits();
 513
 514         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 515         fprintf(fp, "#\n");
 516
 517         fprintf(fp, "# Overhead");
 518         if (show_nr_samples) {
 519                 if (field_sep)
 520                         fprintf(fp, "%cSamples", *field_sep);
 521                 else
 522                         fputs("  Samples  ", fp);
 523         }
 524         list_for_each_entry(se, &hist_entry__sort_list, list) {
 525                 if (se->elide)
 526                         continue;
 527                 if (field_sep) {
 528                         fprintf(fp, "%c%s", *field_sep, se->header);
 529                         continue;
 530                 }
 531                 width = strlen(se->header);
 532                 if (se->width) {
 533                         if (col_width_list_str) {
 534                                 if (col_width) {
 535                                         *se->width = atoi(col_width);
 536                                         col_width = strchr(col_width, ',');
 537                                         if (col_width)
 538                                                 ++col_width;
 539                                 }
 540                         }
 541                         width = *se->width = max(*se->width, width);
 542                 }
 543                 fprintf(fp, "  %*s", width, se->header);
 544         }
 545         fprintf(fp, "\n");
 546
 547         if (field_sep)
 548                 goto print_entries;
 549
 550         fprintf(fp, "# ........");
 551         if (show_nr_samples)
 552                 fprintf(fp, " ..........");
 553         list_for_each_entry(se, &hist_entry__sort_list, list) {
 554                 unsigned int i;
 555
 556                 if (se->elide)
 557                         continue;
 558
 559                 fprintf(fp, "  ");
 560                 if (se->width)
 561                         width = *se->width;
 562                 else
 563                         width = strlen(se->header);
 564                 for (i = 0; i < width; i++)
 565                         fprintf(fp, ".");
 566         }
 567         fprintf(fp, "\n");
 568
 569         fprintf(fp, "#\n");
 570
 571 print_entries:
 572         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 573                 pos = rb_entry(nd, struct hist_entry, rb_node);
 574                 ret += hist_entry__fprintf(fp, pos, total_samples);
 575         }
 576
 577         if (sort_order == default_sort_order &&
 578                         parent_pattern == default_parent_pattern) {
 579                 fprintf(fp, "#\n");
 580                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 581                 fprintf(fp, "#\n");
 582         }
 583         fprintf(fp, "\n");
 584
 585         free(rem_sq_bracket);
 586
 587         if (show_threads)
 588                 perf_read_values_display(fp, &show_threads_values,
 589                                          raw_printing_style);
 590
 591         return ret;
 592 }
 593
 594 static int validate_chain(struct ip_callchain *chain, event_t *event)
 595 {
 596         unsigned int chain_size;
 597
 598         chain_size = event->header.size;
 599         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 600
 601         if (chain->nr*sizeof(u64) > chain_size)
 602                 return -1;
 603
 604         return 0;
 605 }
 606
 607 static int process_sample_event(event_t *event)
 608 {
 609         struct sample_data data;
 610         int cpumode;
 611         struct addr_location al;
 612         struct thread *thread;
 613
 614         memset(&data, 0, sizeof(data));
 615         data.period = 1;
 616
 617         event__parse_sample(event, sample_type, &data);
 618
 619         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 620                 event->header.misc,
 621                 data.pid, data.tid,
 622                 (void *)(long)data.ip,
 623                 (long long)data.period);
 624
 625         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 626                 unsigned int i;
 627
 628                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 629
 630                 if (validate_chain(data.callchain, event) < 0) {
 631                         pr_debug("call-chain problem with event, "
 632                                  "skipping it.\n");
 633                         return 0;
 634                 }
 635
 636                 if (dump_trace) {
 637                         for (i = 0; i < data.callchain->nr; i++)
 638                                 dump_printf("..... %2d: %016Lx\n",
 639                                             i, data.callchain->ips[i]);
 640                 }
 641         }
 642
 643         thread = threads__findnew(data.pid);
 644         if (thread == NULL) {
 645                 pr_debug("problem processing %d event, skipping it.\n",
 646                         event->header.type);
 647                 return -1;
 648         }
 649
 650         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 651
 652         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 653                 return 0;
 654
 655         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 656
 657         thread__find_addr_location(thread, cpumode,
 658                                    MAP__FUNCTION, data.ip, &al, NULL);
 659         /*
 660          * We have to do this here as we may have a dso with no symbol hit that
 661          * has a name longer than the ones with symbols sampled.
 662          */
 663         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 664                 dso__calc_col_width(al.map->dso);
 665
 666         if (dso_list &&
 667             (!al.map || !al.map->dso ||
 668              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
 669                (al.map->dso->short_name != al.map->dso->long_name &&
 670                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
 671                 return 0;
 672
 673         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 674                 return 0;
 675
 676         if (hist_entry__add(&al, data.callchain, data.period)) {
 677                 pr_debug("problem incrementing symbol count, skipping event\n");
 678                 return -1;
 679         }
 680
 681         event__stats.total += data.period;
 682
 683         return 0;
 684 }
 685
 686 static int process_comm_event(event_t *event)
 687 {
 688         struct thread *thread = threads__findnew(event->comm.pid);
 689
 690         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
 691
 692         if (thread == NULL ||
 693             thread__set_comm_adjust(thread, event->comm.comm)) {
 694                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 695                 return -1;
 696         }
 697
 698         return 0;
 699 }
 700
 701 static int process_read_event(event_t *event)
 702 {
 703         struct perf_event_attr *attr;
 704
 705         attr = perf_header__find_attr(event->read.id, &session->header);
 706
 707         if (show_threads) {
 708                 const char *name = attr ? __event_name(attr->type, attr->config)
 709                                    : "unknown";
 710                 perf_read_values_add_value(&show_threads_values,
 711                                            event->read.pid, event->read.tid,
 712                                            event->read.id,
 713                                            name,
 714                                            event->read.value);
 715         }
 716
 717         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 718                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 719                     event->read.value);
 720
 721         return 0;
 722 }
 723
 724 static int sample_type_check(u64 type)
 725 {
 726         sample_type = type;
 727
 728         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 729                 if (sort__has_parent) {
 730                         fprintf(stderr, "selected --sort parent, but no"
 731                                         " callchain data. Did you call"
 732                                         " perf record without -g?\n");
 733                         return -1;
 734                 }
 735                 if (callchain) {
 736                         fprintf(stderr, "selected -g but no callchain data."
 737                                         " Did you call perf record without"
 738                                         " -g?\n");
 739                         return -1;
 740                 }
 741         } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
 742                         callchain = 1;
 743                         if (register_callchain_param(&callchain_param) < 0) {
 744                                 fprintf(stderr, "Can't register callchain"
 745                                                 " params\n");
 746                                 return -1;
 747                         }
 748         }
 749
 750         return 0;
 751 }
 752
 753 static struct perf_file_handler file_handler = {
 754         .process_sample_event   = process_sample_event,
 755         .process_mmap_event     = event__process_mmap,
 756         .process_comm_event     = process_comm_event,
 757         .process_exit_event     = event__process_task,
 758         .process_fork_event     = event__process_task,
 759         .process_lost_event     = event__process_lost,
 760         .process_read_event     = process_read_event,
 761         .sample_type_check      = sample_type_check,
 762 };
 763
 764
 765 static int __cmd_report(void)
 766 {
 767         struct thread *idle;
 768         int ret;
 769
 770         session = perf_session__new(input_name, O_RDONLY, force);
 771         if (session == NULL)
 772                 return -ENOMEM;
 773
 774         idle = register_idle_thread();
 775         thread__comm_adjust(idle);
 776
 777         if (show_threads)
 778                 perf_read_values_init(&show_threads_values);
 779
 780         register_perf_file_handler(&file_handler);
 781
 782         ret = perf_session__process_events(session, full_paths,
 783                                            &event__cwdlen, &event__cwd);
 784         if (ret)
 785                 goto out_delete;
 786
 787         if (dump_trace) {
 788                 event__print_totals();
 789                 goto out_delete;
 790         }
 791
 792         if (verbose > 3)
 793                 threads__fprintf(stdout);
 794
 795         if (verbose > 2)
 796                 dsos__fprintf(stdout);
 797
 798         collapse__resort();
 799         output__resort(event__stats.total);
 800         output__fprintf(stdout, event__stats.total);
 801
 802         if (show_threads)
 803                 perf_read_values_destroy(&show_threads_values);
 804 out_delete:
 805         perf_session__delete(session);
 806         return ret;
 807 }
 808
 809 static int
 810 parse_callchain_opt(const struct option *opt __used, const char *arg,
 811                     int unset __used)
 812 {
 813         char *tok;
 814         char *endptr;
 815
 816         callchain = 1;
 817
 818         if (!arg)
 819                 return 0;
 820
 821         tok = strtok((char *)arg, ",");
 822         if (!tok)
 823                 return -1;
 824
 825         /* get the output mode */
 826         if (!strncmp(tok, "graph", strlen(arg)))
 827                 callchain_param.mode = CHAIN_GRAPH_ABS;
 828
 829         else if (!strncmp(tok, "flat", strlen(arg)))
 830                 callchain_param.mode = CHAIN_FLAT;
 831
 832         else if (!strncmp(tok, "fractal", strlen(arg)))
 833                 callchain_param.mode = CHAIN_GRAPH_REL;
 834
 835         else if (!strncmp(tok, "none", strlen(arg))) {
 836                 callchain_param.mode = CHAIN_NONE;
 837                 callchain = 0;
 838
 839                 return 0;
 840         }
 841
 842         else
 843                 return -1;
 844
 845         /* get the min percentage */
 846         tok = strtok(NULL, ",");
 847         if (!tok)
 848                 goto setup;
 849
 850         callchain_param.min_percent = strtod(tok, &endptr);
 851         if (tok == endptr)
 852                 return -1;
 853
 854 setup:
 855         if (register_callchain_param(&callchain_param) < 0) {
 856                 fprintf(stderr, "Can't register callchain params\n");
 857                 return -1;
 858         }
 859         return 0;
 860 }
 861
 862 //static const char * const report_usage[] = {
 863 const char * const report_usage[] = {
 864         "perf report [<options>] <command>",
 865         NULL
 866 };
 867
 868 static const struct option options[] = {
 869         OPT_STRING('i', "input", &input_name, "file",
 870                     "input file name"),
 871         OPT_BOOLEAN('v', "verbose", &verbose,
 872                     "be more verbose (show symbol address, etc)"),
 873         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 874                     "dump raw trace in ASCII"),
 875         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 876                    "file", "vmlinux pathname"),
 877         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 878         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 879                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 880         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 881                     "Show a column with the number of samples"),
 882         OPT_BOOLEAN('T', "threads", &show_threads,
 883                     "Show per-thread event counters"),
 884         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 885                    "pretty printing style key: normal raw"),
 886         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 887                    "sort by key(s): pid, comm, dso, symbol, parent"),
 888         OPT_BOOLEAN('P', "full-paths", &full_paths,
 889                     "Don't shorten the pathnames taking into account the cwd"),
 890         OPT_STRING('p', "parent", &parent_pattern, "regex",
 891                    "regex filter to identify parent, see: '--sort parent'"),
 892         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 893                     "Only display entries with parent-match"),
 894         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 895                      "Display callchains using output_type and min percent threshold. "
 896                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 897         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 898                    "only consider symbols in these dsos"),
 899         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 900                    "only consider symbols in these comms"),
 901         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 902                    "only consider these symbols"),
 903         OPT_STRING('w', "column-widths", &col_width_list_str,
 904                    "width[,width...]",
 905                    "don't try to adjust column width, use these fixed values"),
 906         OPT_STRING('t', "field-separator", &field_sep, "separator",
 907                    "separator for columns, no spaces will be added between "
 908                    "columns '.' is reserved."),
 909         OPT_END()
 910 };
 911
 912 static void setup_sorting(void)
 913 {
 914         char *tmp, *tok, *str = strdup(sort_order);
 915
 916         for (tok = strtok_r(str, ", ", &tmp);
 917                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 918                 if (sort_dimension__add(tok) < 0) {
 919                         error("Unknown --sort key: `%s'", tok);
 920                         usage_with_options(report_usage, options);
 921                 }
 922         }
 923
 924         free(str);
 925 }
 926
 927 static void setup_list(struct strlist **list, const char *list_str,
 928                        struct sort_entry *se, const char *list_name,
 929                        FILE *fp)
 930 {
 931         if (list_str) {
 932                 *list = strlist__new(true, list_str);
 933                 if (!*list) {
 934                         fprintf(stderr, "problems parsing %s list\n",
 935                                 list_name);
 936                         exit(129);
 937                 }
 938                 if (strlist__nr_entries(*list) == 1) {
 939                         fprintf(fp, "# %s: %s\n", list_name,
 940                                 strlist__entry(*list, 0)->s);
 941                         se->elide = true;
 942                 }
 943         }
 944 }
 945
 946 int cmd_report(int argc, const char **argv, const char *prefix __used)
 947 {
 948         if (symbol__init(&symbol_conf) < 0)
 949                 return -1;
 950
 951         argc = parse_options(argc, argv, options, report_usage, 0);
 952
 953         setup_sorting();
 954
 955         if (parent_pattern != default_parent_pattern) {
 956                 sort_dimension__add("parent");
 957                 sort_parent.elide = 1;
 958         } else
 959                 exclude_other = 0;
 960
 961         /*
 962          * Any (unrecognized) arguments left?
 963          */
 964         if (argc)
 965                 usage_with_options(report_usage, options);
 966
 967         setup_pager();
 968
 969         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
 970         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
 971         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
 972
 973         if (field_sep && *field_sep == '.') {
 974                 fputs("'.' is the only non valid --field-separator argument\n",
 975                       stderr);
 976                 exit(129);
 977         }
 978
 979         return __cmd_report();
 980 }