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 static bool             use_callchain;
  42
  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 struct symbol_conf      symbol_conf;
  56
  57
  58 static size_t
  59 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  60 {
  61         int i;
  62         int ret;
  63
  64         ret = fprintf(fp, "            ");
  65
  66         for (i = 0; i < left_margin; i++)
  67                 ret += fprintf(fp, " ");
  68
  69         return ret;
  70 }
  71
  72 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  73                                           int left_margin)
  74 {
  75         int i;
  76         size_t ret = 0;
  77
  78         ret += callchain__fprintf_left_margin(fp, left_margin);
  79
  80         for (i = 0; i < depth; i++)
  81                 if (depth_mask & (1 << i))
  82                         ret += fprintf(fp, "|          ");
  83                 else
  84                         ret += fprintf(fp, "           ");
  85
  86         ret += fprintf(fp, "\n");
  87
  88         return ret;
  89 }
  90 static size_t
  91 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  92                        int depth_mask, int count, u64 total_samples,
  93                        int hits, int left_margin)
  94 {
  95         int i;
  96         size_t ret = 0;
  97
  98         ret += callchain__fprintf_left_margin(fp, left_margin);
  99         for (i = 0; i < depth; i++) {
 100                 if (depth_mask & (1 << i))
 101                         ret += fprintf(fp, "|");
 102                 else
 103                         ret += fprintf(fp, " ");
 104                 if (!count && i == depth - 1) {
 105                         double percent;
 106
 107                         percent = hits * 100.0 / total_samples;
 108                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 109                 } else
 110                         ret += fprintf(fp, "%s", "          ");
 111         }
 112         if (chain->sym)
 113                 ret += fprintf(fp, "%s\n", chain->sym->name);
 114         else
 115                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 116
 117         return ret;
 118 }
 119
 120 static struct symbol *rem_sq_bracket;
 121 static struct callchain_list rem_hits;
 122
 123 static void init_rem_hits(void)
 124 {
 125         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 126         if (!rem_sq_bracket) {
 127                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 128                 return;
 129         }
 130
 131         strcpy(rem_sq_bracket->name, "[...]");
 132         rem_hits.sym = rem_sq_bracket;
 133 }
 134
 135 static size_t
 136 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 137                            u64 total_samples, int depth, int depth_mask,
 138                            int left_margin)
 139 {
 140         struct rb_node *node, *next;
 141         struct callchain_node *child;
 142         struct callchain_list *chain;
 143         int new_depth_mask = depth_mask;
 144         u64 new_total;
 145         u64 remaining;
 146         size_t ret = 0;
 147         int i;
 148
 149         if (callchain_param.mode == CHAIN_GRAPH_REL)
 150                 new_total = self->children_hit;
 151         else
 152                 new_total = total_samples;
 153
 154         remaining = new_total;
 155
 156         node = rb_first(&self->rb_root);
 157         while (node) {
 158                 u64 cumul;
 159
 160                 child = rb_entry(node, struct callchain_node, rb_node);
 161                 cumul = cumul_hits(child);
 162                 remaining -= cumul;
 163
 164                 /*
 165                  * The depth mask manages the output of pipes that show
 166                  * the depth. We don't want to keep the pipes of the current
 167                  * level for the last child of this depth.
 168                  * Except if we have remaining filtered hits. They will
 169                  * supersede the last child
 170                  */
 171                 next = rb_next(node);
 172                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 173                         new_depth_mask &= ~(1 << (depth - 1));
 174
 175                 /*
 176                  * But we keep the older depth mask for the line seperator
 177                  * to keep the level link until we reach the last child
 178                  */
 179                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 180                                                    left_margin);
 181                 i = 0;
 182                 list_for_each_entry(chain, &child->val, list) {
 183                         if (chain->ip >= PERF_CONTEXT_MAX)
 184                                 continue;
 185                         ret += ipchain__fprintf_graph(fp, chain, depth,
 186                                                       new_depth_mask, i++,
 187                                                       new_total,
 188                                                       cumul,
 189                                                       left_margin);
 190                 }
 191                 ret += __callchain__fprintf_graph(fp, child, new_total,
 192                                                   depth + 1,
 193                                                   new_depth_mask | (1 << depth),
 194                                                   left_margin);
 195                 node = next;
 196         }
 197
 198         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 199                 remaining && remaining != new_total) {
 200
 201                 if (!rem_sq_bracket)
 202                         return ret;
 203
 204                 new_depth_mask &= ~(1 << (depth - 1));
 205
 206                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 207                                               new_depth_mask, 0, new_total,
 208                                               remaining, left_margin);
 209         }
 210
 211         return ret;
 212 }
 213
 214
 215 static size_t
 216 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 217                          u64 total_samples, int left_margin)
 218 {
 219         struct callchain_list *chain;
 220         bool printed = false;
 221         int i = 0;
 222         int ret = 0;
 223
 224         list_for_each_entry(chain, &self->val, list) {
 225                 if (chain->ip >= PERF_CONTEXT_MAX)
 226                         continue;
 227
 228                 if (!i++ && sort__first_dimension == SORT_SYM)
 229                         continue;
 230
 231                 if (!printed) {
 232                         ret += callchain__fprintf_left_margin(fp, left_margin);
 233                         ret += fprintf(fp, "|\n");
 234                         ret += callchain__fprintf_left_margin(fp, left_margin);
 235                         ret += fprintf(fp, "---");
 236
 237                         left_margin += 3;
 238                         printed = true;
 239                 } else
 240                         ret += callchain__fprintf_left_margin(fp, left_margin);
 241
 242                 if (chain->sym)
 243                         ret += fprintf(fp, " %s\n", chain->sym->name);
 244                 else
 245                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 246         }
 247
 248         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 249
 250         return ret;
 251 }
 252
 253 static size_t
 254 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 255                         u64 total_samples)
 256 {
 257         struct callchain_list *chain;
 258         size_t ret = 0;
 259
 260         if (!self)
 261                 return 0;
 262
 263         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 264
 265
 266         list_for_each_entry(chain, &self->val, list) {
 267                 if (chain->ip >= PERF_CONTEXT_MAX)
 268                         continue;
 269                 if (chain->sym)
 270                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 271                 else
 272                         ret += fprintf(fp, "                %p\n",
 273                                         (void *)(long)chain->ip);
 274         }
 275
 276         return ret;
 277 }
 278
 279 static size_t
 280 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 281                               u64 total_samples, int left_margin)
 282 {
 283         struct rb_node *rb_node;
 284         struct callchain_node *chain;
 285         size_t ret = 0;
 286
 287         rb_node = rb_first(&self->sorted_chain);
 288         while (rb_node) {
 289                 double percent;
 290
 291                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 292                 percent = chain->hit * 100.0 / total_samples;
 293                 switch (callchain_param.mode) {
 294                 case CHAIN_FLAT:
 295                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 296                                                      percent);
 297                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 298                         break;
 299                 case CHAIN_GRAPH_ABS: /* Falldown */
 300                 case CHAIN_GRAPH_REL:
 301                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 302                                                         left_margin);
 303                 case CHAIN_NONE:
 304                 default:
 305                         break;
 306                 }
 307                 ret += fprintf(fp, "\n");
 308                 rb_node = rb_next(rb_node);
 309         }
 310
 311         return ret;
 312 }
 313
 314 static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
 315                                   struct perf_session *session,
 316                                   u64 total_samples)
 317 {
 318         struct sort_entry *se;
 319         size_t ret;
 320
 321         if (exclude_other && !self->parent)
 322                 return 0;
 323
 324         if (total_samples)
 325                 ret = percent_color_fprintf(fp,
 326                                             field_sep ? "%.2f" : "   %6.2f%%",
 327                                         (self->count * 100.0) / total_samples);
 328         else
 329                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 330
 331         if (show_nr_samples) {
 332                 if (field_sep)
 333                         fprintf(fp, "%c%lld", *field_sep, self->count);
 334                 else
 335                         fprintf(fp, "%11lld", self->count);
 336         }
 337
 338         list_for_each_entry(se, &hist_entry__sort_list, list) {
 339                 if (se->elide)
 340                         continue;
 341
 342                 fprintf(fp, "%s", field_sep ?: "  ");
 343                 ret += se->print(fp, self, se->width ? *se->width : 0);
 344         }
 345
 346         ret += fprintf(fp, "\n");
 347
 348         if (session->use_callchain) {
 349                 int left_margin = 0;
 350
 351                 if (sort__first_dimension == SORT_COMM) {
 352                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 353                                                 list);
 354                         left_margin = se->width ? *se->width : 0;
 355                         left_margin -= thread__comm_len(self->thread);
 356                 }
 357
 358                 hist_entry_callchain__fprintf(fp, self, total_samples,
 359                                               left_margin);
 360         }
 361
 362         return ret;
 363 }
 364
 365 /*
 366  *
 367  */
 368
 369 static void dso__calc_col_width(struct dso *self)
 370 {
 371         if (!col_width_list_str && !field_sep &&
 372             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 373                 unsigned int slen = strlen(self->name);
 374                 if (slen > dsos__col_width)
 375                         dsos__col_width = slen;
 376         }
 377
 378         self->slen_calculated = 1;
 379 }
 380
 381 static void thread__comm_adjust(struct thread *self)
 382 {
 383         char *comm = self->comm;
 384
 385         if (!col_width_list_str && !field_sep &&
 386             (!comm_list || strlist__has_entry(comm_list, comm))) {
 387                 unsigned int slen = strlen(comm);
 388
 389                 if (slen > comms__col_width) {
 390                         comms__col_width = slen;
 391                         threads__col_width = slen + 6;
 392                 }
 393         }
 394 }
 395
 396 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 397 {
 398         int ret = thread__set_comm(self, comm);
 399
 400         if (ret)
 401                 return ret;
 402
 403         thread__comm_adjust(self);
 404
 405         return 0;
 406 }
 407
 408 /*
 409  * collect histogram counts
 410  */
 411
 412 static int perf_session__add_hist_entry(struct perf_session *self,
 413                                         struct addr_location *al,
 414                                         struct ip_callchain *chain, u64 count)
 415 {
 416         struct symbol **syms = NULL, *parent = NULL;
 417         bool hit;
 418         struct hist_entry *he;
 419
 420         if ((sort__has_parent || self->use_callchain) && chain)
 421                 syms = perf_session__resolve_callchain(self, al->thread,
 422                                                        chain, &parent);
 423         he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
 424         if (he == NULL)
 425                 return -ENOMEM;
 426
 427         if (hit)
 428                 he->count += count;
 429
 430         if (self->use_callchain) {
 431                 if (!hit)
 432                         callchain_init(&he->callchain);
 433                 append_chain(&he->callchain, chain, syms);
 434                 free(syms);
 435         }
 436
 437         return 0;
 438 }
 439
 440 static size_t perf_session__fprintf_hist_entries(struct perf_session *self,
 441                                                  u64 total_samples, FILE *fp)
 442 {
 443         struct hist_entry *pos;
 444         struct sort_entry *se;
 445         struct rb_node *nd;
 446         size_t ret = 0;
 447         unsigned int width;
 448         char *col_width = col_width_list_str;
 449         int raw_printing_style;
 450
 451         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 452
 453         init_rem_hits();
 454
 455         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 456         fprintf(fp, "#\n");
 457
 458         fprintf(fp, "# Overhead");
 459         if (show_nr_samples) {
 460                 if (field_sep)
 461                         fprintf(fp, "%cSamples", *field_sep);
 462                 else
 463                         fputs("  Samples  ", fp);
 464         }
 465         list_for_each_entry(se, &hist_entry__sort_list, list) {
 466                 if (se->elide)
 467                         continue;
 468                 if (field_sep) {
 469                         fprintf(fp, "%c%s", *field_sep, se->header);
 470                         continue;
 471                 }
 472                 width = strlen(se->header);
 473                 if (se->width) {
 474                         if (col_width_list_str) {
 475                                 if (col_width) {
 476                                         *se->width = atoi(col_width);
 477                                         col_width = strchr(col_width, ',');
 478                                         if (col_width)
 479                                                 ++col_width;
 480                                 }
 481                         }
 482                         width = *se->width = max(*se->width, width);
 483                 }
 484                 fprintf(fp, "  %*s", width, se->header);
 485         }
 486         fprintf(fp, "\n");
 487
 488         if (field_sep)
 489                 goto print_entries;
 490
 491         fprintf(fp, "# ........");
 492         if (show_nr_samples)
 493                 fprintf(fp, " ..........");
 494         list_for_each_entry(se, &hist_entry__sort_list, list) {
 495                 unsigned int i;
 496
 497                 if (se->elide)
 498                         continue;
 499
 500                 fprintf(fp, "  ");
 501                 if (se->width)
 502                         width = *se->width;
 503                 else
 504                         width = strlen(se->header);
 505                 for (i = 0; i < width; i++)
 506                         fprintf(fp, ".");
 507         }
 508         fprintf(fp, "\n");
 509
 510         fprintf(fp, "#\n");
 511
 512 print_entries:
 513         for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
 514                 pos = rb_entry(nd, struct hist_entry, rb_node);
 515                 ret += hist_entry__fprintf(fp, pos, self, total_samples);
 516         }
 517
 518         if (sort_order == default_sort_order &&
 519                         parent_pattern == default_parent_pattern) {
 520                 fprintf(fp, "#\n");
 521                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 522                 fprintf(fp, "#\n");
 523         }
 524         fprintf(fp, "\n");
 525
 526         free(rem_sq_bracket);
 527
 528         if (show_threads)
 529                 perf_read_values_display(fp, &show_threads_values,
 530                                          raw_printing_style);
 531
 532         return ret;
 533 }
 534
 535 static int validate_chain(struct ip_callchain *chain, event_t *event)
 536 {
 537         unsigned int chain_size;
 538
 539         chain_size = event->header.size;
 540         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 541
 542         if (chain->nr*sizeof(u64) > chain_size)
 543                 return -1;
 544
 545         return 0;
 546 }
 547
 548 static int process_sample_event(event_t *event, struct perf_session *session)
 549 {
 550         struct sample_data data;
 551         int cpumode;
 552         struct addr_location al;
 553         struct thread *thread;
 554
 555         memset(&data, 0, sizeof(data));
 556         data.period = 1;
 557
 558         event__parse_sample(event, session->sample_type, &data);
 559
 560         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 561                 event->header.misc,
 562                 data.pid, data.tid,
 563                 (void *)(long)data.ip,
 564                 (long long)data.period);
 565
 566         if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
 567                 unsigned int i;
 568
 569                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 570
 571                 if (validate_chain(data.callchain, event) < 0) {
 572                         pr_debug("call-chain problem with event, "
 573                                  "skipping it.\n");
 574                         return 0;
 575                 }
 576
 577                 if (dump_trace) {
 578                         for (i = 0; i < data.callchain->nr; i++)
 579                                 dump_printf("..... %2d: %016Lx\n",
 580                                             i, data.callchain->ips[i]);
 581                 }
 582         }
 583
 584         thread = perf_session__findnew(session, data.pid);
 585         if (thread == NULL) {
 586                 pr_debug("problem processing %d event, skipping it.\n",
 587                         event->header.type);
 588                 return -1;
 589         }
 590
 591         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 592
 593         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 594                 return 0;
 595
 596         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 597
 598         thread__find_addr_location(thread, session, cpumode,
 599                                    MAP__FUNCTION, data.ip, &al, NULL);
 600         /*
 601          * We have to do this here as we may have a dso with no symbol hit that
 602          * has a name longer than the ones with symbols sampled.
 603          */
 604         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 605                 dso__calc_col_width(al.map->dso);
 606
 607         if (dso_list &&
 608             (!al.map || !al.map->dso ||
 609              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
 610                (al.map->dso->short_name != al.map->dso->long_name &&
 611                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
 612                 return 0;
 613
 614         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 615                 return 0;
 616
 617         if (perf_session__add_hist_entry(session, &al, data.callchain, data.period)) {
 618                 pr_debug("problem incrementing symbol count, skipping event\n");
 619                 return -1;
 620         }
 621
 622         event__stats.total += data.period;
 623
 624         return 0;
 625 }
 626
 627 static int process_comm_event(event_t *event, struct perf_session *session)
 628 {
 629         struct thread *thread = perf_session__findnew(session, event->comm.pid);
 630
 631         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
 632
 633         if (thread == NULL ||
 634             thread__set_comm_adjust(thread, event->comm.comm)) {
 635                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 636                 return -1;
 637         }
 638
 639         return 0;
 640 }
 641
 642 static int process_read_event(event_t *event, struct perf_session *session __used)
 643 {
 644         struct perf_event_attr *attr;
 645
 646         attr = perf_header__find_attr(event->read.id, &session->header);
 647
 648         if (show_threads) {
 649                 const char *name = attr ? __event_name(attr->type, attr->config)
 650                                    : "unknown";
 651                 perf_read_values_add_value(&show_threads_values,
 652                                            event->read.pid, event->read.tid,
 653                                            event->read.id,
 654                                            name,
 655                                            event->read.value);
 656         }
 657
 658         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 659                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 660                     event->read.value);
 661
 662         return 0;
 663 }
 664
 665 static int sample_type_check(struct perf_session *session)
 666 {
 667         if (!(session->sample_type & PERF_SAMPLE_CALLCHAIN)) {
 668                 if (sort__has_parent) {
 669                         fprintf(stderr, "selected --sort parent, but no"
 670                                         " callchain data. Did you call"
 671                                         " perf record without -g?\n");
 672                         return -1;
 673                 }
 674                 if (session->use_callchain) {
 675                         fprintf(stderr, "selected -g but no callchain data."
 676                                         " Did you call perf record without"
 677                                         " -g?\n");
 678                         return -1;
 679                 }
 680         } else if (callchain_param.mode != CHAIN_NONE && !session->use_callchain) {
 681                         session->use_callchain = true;
 682                         if (register_callchain_param(&callchain_param) < 0) {
 683                                 fprintf(stderr, "Can't register callchain"
 684                                                 " params\n");
 685                                 return -1;
 686                         }
 687         }
 688
 689         return 0;
 690 }
 691
 692 static struct perf_event_ops event_ops = {
 693         .process_sample_event   = process_sample_event,
 694         .process_mmap_event     = event__process_mmap,
 695         .process_comm_event     = process_comm_event,
 696         .process_exit_event     = event__process_task,
 697         .process_fork_event     = event__process_task,
 698         .process_lost_event     = event__process_lost,
 699         .process_read_event     = process_read_event,
 700         .sample_type_check      = sample_type_check,
 701 };
 702
 703
 704 static int __cmd_report(void)
 705 {
 706         int ret;
 707         struct perf_session *session;
 708
 709         session = perf_session__new(input_name, O_RDONLY, force, &symbol_conf);
 710         if (session == NULL)
 711                 return -ENOMEM;
 712
 713         session->use_callchain = use_callchain;
 714
 715         if (show_threads)
 716                 perf_read_values_init(&show_threads_values);
 717
 718         ret = perf_session__process_events(session, &event_ops);
 719         if (ret)
 720                 goto out_delete;
 721
 722         if (dump_trace) {
 723                 event__print_totals();
 724                 goto out_delete;
 725         }
 726
 727         if (verbose > 3)
 728                 perf_session__fprintf(session, stdout);
 729
 730         if (verbose > 2)
 731                 dsos__fprintf(stdout);
 732
 733         perf_session__collapse_resort(session);
 734         perf_session__output_resort(session, event__stats.total);
 735         perf_session__fprintf_hist_entries(session, event__stats.total, stdout);
 736
 737         if (show_threads)
 738                 perf_read_values_destroy(&show_threads_values);
 739 out_delete:
 740         perf_session__delete(session);
 741         return ret;
 742 }
 743
 744 static int
 745 parse_callchain_opt(const struct option *opt __used, const char *arg,
 746                     int unset __used)
 747 {
 748         char *tok;
 749         char *endptr;
 750
 751         use_callchain = true;
 752
 753         if (!arg)
 754                 return 0;
 755
 756         tok = strtok((char *)arg, ",");
 757         if (!tok)
 758                 return -1;
 759
 760         /* get the output mode */
 761         if (!strncmp(tok, "graph", strlen(arg)))
 762                 callchain_param.mode = CHAIN_GRAPH_ABS;
 763
 764         else if (!strncmp(tok, "flat", strlen(arg)))
 765                 callchain_param.mode = CHAIN_FLAT;
 766
 767         else if (!strncmp(tok, "fractal", strlen(arg)))
 768                 callchain_param.mode = CHAIN_GRAPH_REL;
 769
 770         else if (!strncmp(tok, "none", strlen(arg))) {
 771                 callchain_param.mode = CHAIN_NONE;
 772                 use_callchain = true;
 773
 774                 return 0;
 775         }
 776
 777         else
 778                 return -1;
 779
 780         /* get the min percentage */
 781         tok = strtok(NULL, ",");
 782         if (!tok)
 783                 goto setup;
 784
 785         callchain_param.min_percent = strtod(tok, &endptr);
 786         if (tok == endptr)
 787                 return -1;
 788
 789 setup:
 790         if (register_callchain_param(&callchain_param) < 0) {
 791                 fprintf(stderr, "Can't register callchain params\n");
 792                 return -1;
 793         }
 794         return 0;
 795 }
 796
 797 //static const char * const report_usage[] = {
 798 const char * const report_usage[] = {
 799         "perf report [<options>] <command>",
 800         NULL
 801 };
 802
 803 static const struct option options[] = {
 804         OPT_STRING('i', "input", &input_name, "file",
 805                     "input file name"),
 806         OPT_BOOLEAN('v', "verbose", &verbose,
 807                     "be more verbose (show symbol address, etc)"),
 808         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 809                     "dump raw trace in ASCII"),
 810         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 811                    "file", "vmlinux pathname"),
 812         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 813         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 814                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 815         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 816                     "Show a column with the number of samples"),
 817         OPT_BOOLEAN('T', "threads", &show_threads,
 818                     "Show per-thread event counters"),
 819         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 820                    "pretty printing style key: normal raw"),
 821         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 822                    "sort by key(s): pid, comm, dso, symbol, parent"),
 823         OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
 824                     "Don't shorten the pathnames taking into account the cwd"),
 825         OPT_STRING('p', "parent", &parent_pattern, "regex",
 826                    "regex filter to identify parent, see: '--sort parent'"),
 827         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 828                     "Only display entries with parent-match"),
 829         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 830                      "Display callchains using output_type and min percent threshold. "
 831                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 832         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 833                    "only consider symbols in these dsos"),
 834         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 835                    "only consider symbols in these comms"),
 836         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 837                    "only consider these symbols"),
 838         OPT_STRING('w', "column-widths", &col_width_list_str,
 839                    "width[,width...]",
 840                    "don't try to adjust column width, use these fixed values"),
 841         OPT_STRING('t', "field-separator", &field_sep, "separator",
 842                    "separator for columns, no spaces will be added between "
 843                    "columns '.' is reserved."),
 844         OPT_END()
 845 };
 846
 847 static void setup_sorting(void)
 848 {
 849         char *tmp, *tok, *str = strdup(sort_order);
 850
 851         for (tok = strtok_r(str, ", ", &tmp);
 852                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 853                 if (sort_dimension__add(tok) < 0) {
 854                         error("Unknown --sort key: `%s'", tok);
 855                         usage_with_options(report_usage, options);
 856                 }
 857         }
 858
 859         free(str);
 860 }
 861
 862 static void setup_list(struct strlist **list, const char *list_str,
 863                        struct sort_entry *se, const char *list_name,
 864                        FILE *fp)
 865 {
 866         if (list_str) {
 867                 *list = strlist__new(true, list_str);
 868                 if (!*list) {
 869                         fprintf(stderr, "problems parsing %s list\n",
 870                                 list_name);
 871                         exit(129);
 872                 }
 873                 if (strlist__nr_entries(*list) == 1) {
 874                         fprintf(fp, "# %s: %s\n", list_name,
 875                                 strlist__entry(*list, 0)->s);
 876                         se->elide = true;
 877                 }
 878         }
 879 }
 880
 881 int cmd_report(int argc, const char **argv, const char *prefix __used)
 882 {
 883         if (symbol__init(&symbol_conf) < 0)
 884                 return -1;
 885
 886         argc = parse_options(argc, argv, options, report_usage, 0);
 887
 888         setup_sorting();
 889
 890         if (parent_pattern != default_parent_pattern) {
 891                 sort_dimension__add("parent");
 892                 sort_parent.elide = 1;
 893         } else
 894                 exclude_other = 0;
 895
 896         /*
 897          * Any (unrecognized) arguments left?
 898          */
 899         if (argc)
 900                 usage_with_options(report_usage, options);
 901
 902         setup_pager();
 903
 904         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
 905         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
 906         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
 907
 908         if (field_sep && *field_sep == '.') {
 909                 fputs("'.' is the only non valid --field-separator argument\n",
 910                       stderr);
 911                 exit(129);
 912         }
 913
 914         return __cmd_report();
 915 }