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