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 int              force;
  37
  38 static int              show_threads;
  39 static struct perf_read_values  show_threads_values;
  40
  41 static char             default_pretty_printing_style[] = "normal";
  42 static char             *pretty_printing_style = default_pretty_printing_style;
  43
  44 static char             callchain_default_opt[] = "fractal,0.5";
  45
  46 static size_t
  47 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  48 {
  49         int i;
  50         int ret;
  51
  52         ret = fprintf(fp, "            ");
  53
  54         for (i = 0; i < left_margin; i++)
  55                 ret += fprintf(fp, " ");
  56
  57         return ret;
  58 }
  59
  60 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  61                                           int left_margin)
  62 {
  63         int i;
  64         size_t ret = 0;
  65
  66         ret += callchain__fprintf_left_margin(fp, left_margin);
  67
  68         for (i = 0; i < depth; i++)
  69                 if (depth_mask & (1 << i))
  70                         ret += fprintf(fp, "|          ");
  71                 else
  72                         ret += fprintf(fp, "           ");
  73
  74         ret += fprintf(fp, "\n");
  75
  76         return ret;
  77 }
  78 static size_t
  79 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  80                        int depth_mask, int count, u64 total_samples,
  81                        int hits, int left_margin)
  82 {
  83         int i;
  84         size_t ret = 0;
  85
  86         ret += callchain__fprintf_left_margin(fp, left_margin);
  87         for (i = 0; i < depth; i++) {
  88                 if (depth_mask & (1 << i))
  89                         ret += fprintf(fp, "|");
  90                 else
  91                         ret += fprintf(fp, " ");
  92                 if (!count && i == depth - 1) {
  93                         double percent;
  94
  95                         percent = hits * 100.0 / total_samples;
  96                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
  97                 } else
  98                         ret += fprintf(fp, "%s", "          ");
  99         }
 100         if (chain->sym)
 101                 ret += fprintf(fp, "%s\n", chain->sym->name);
 102         else
 103                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 104
 105         return ret;
 106 }
 107
 108 static struct symbol *rem_sq_bracket;
 109 static struct callchain_list rem_hits;
 110
 111 static void init_rem_hits(void)
 112 {
 113         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 114         if (!rem_sq_bracket) {
 115                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 116                 return;
 117         }
 118
 119         strcpy(rem_sq_bracket->name, "[...]");
 120         rem_hits.sym = rem_sq_bracket;
 121 }
 122
 123 static size_t
 124 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 125                            u64 total_samples, int depth, int depth_mask,
 126                            int left_margin)
 127 {
 128         struct rb_node *node, *next;
 129         struct callchain_node *child;
 130         struct callchain_list *chain;
 131         int new_depth_mask = depth_mask;
 132         u64 new_total;
 133         u64 remaining;
 134         size_t ret = 0;
 135         int i;
 136
 137         if (callchain_param.mode == CHAIN_GRAPH_REL)
 138                 new_total = self->children_hit;
 139         else
 140                 new_total = total_samples;
 141
 142         remaining = new_total;
 143
 144         node = rb_first(&self->rb_root);
 145         while (node) {
 146                 u64 cumul;
 147
 148                 child = rb_entry(node, struct callchain_node, rb_node);
 149                 cumul = cumul_hits(child);
 150                 remaining -= cumul;
 151
 152                 /*
 153                  * The depth mask manages the output of pipes that show
 154                  * the depth. We don't want to keep the pipes of the current
 155                  * level for the last child of this depth.
 156                  * Except if we have remaining filtered hits. They will
 157                  * supersede the last child
 158                  */
 159                 next = rb_next(node);
 160                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 161                         new_depth_mask &= ~(1 << (depth - 1));
 162
 163                 /*
 164                  * But we keep the older depth mask for the line seperator
 165                  * to keep the level link until we reach the last child
 166                  */
 167                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 168                                                    left_margin);
 169                 i = 0;
 170                 list_for_each_entry(chain, &child->val, list) {
 171                         if (chain->ip >= PERF_CONTEXT_MAX)
 172                                 continue;
 173                         ret += ipchain__fprintf_graph(fp, chain, depth,
 174                                                       new_depth_mask, i++,
 175                                                       new_total,
 176                                                       cumul,
 177                                                       left_margin);
 178                 }
 179                 ret += __callchain__fprintf_graph(fp, child, new_total,
 180                                                   depth + 1,
 181                                                   new_depth_mask | (1 << depth),
 182                                                   left_margin);
 183                 node = next;
 184         }
 185
 186         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 187                 remaining && remaining != new_total) {
 188
 189                 if (!rem_sq_bracket)
 190                         return ret;
 191
 192                 new_depth_mask &= ~(1 << (depth - 1));
 193
 194                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 195                                               new_depth_mask, 0, new_total,
 196                                               remaining, left_margin);
 197         }
 198
 199         return ret;
 200 }
 201
 202
 203 static size_t
 204 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 205                          u64 total_samples, int left_margin)
 206 {
 207         struct callchain_list *chain;
 208         bool printed = false;
 209         int i = 0;
 210         int ret = 0;
 211
 212         list_for_each_entry(chain, &self->val, list) {
 213                 if (chain->ip >= PERF_CONTEXT_MAX)
 214                         continue;
 215
 216                 if (!i++ && sort__first_dimension == SORT_SYM)
 217                         continue;
 218
 219                 if (!printed) {
 220                         ret += callchain__fprintf_left_margin(fp, left_margin);
 221                         ret += fprintf(fp, "|\n");
 222                         ret += callchain__fprintf_left_margin(fp, left_margin);
 223                         ret += fprintf(fp, "---");
 224
 225                         left_margin += 3;
 226                         printed = true;
 227                 } else
 228                         ret += callchain__fprintf_left_margin(fp, left_margin);
 229
 230                 if (chain->sym)
 231                         ret += fprintf(fp, " %s\n", chain->sym->name);
 232                 else
 233                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 234         }
 235
 236         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 237
 238         return ret;
 239 }
 240
 241 static size_t
 242 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 243                         u64 total_samples)
 244 {
 245         struct callchain_list *chain;
 246         size_t ret = 0;
 247
 248         if (!self)
 249                 return 0;
 250
 251         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 252
 253
 254         list_for_each_entry(chain, &self->val, list) {
 255                 if (chain->ip >= PERF_CONTEXT_MAX)
 256                         continue;
 257                 if (chain->sym)
 258                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 259                 else
 260                         ret += fprintf(fp, "                %p\n",
 261                                         (void *)(long)chain->ip);
 262         }
 263
 264         return ret;
 265 }
 266
 267 static size_t
 268 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 269                               u64 total_samples, int left_margin)
 270 {
 271         struct rb_node *rb_node;
 272         struct callchain_node *chain;
 273         size_t ret = 0;
 274
 275         rb_node = rb_first(&self->sorted_chain);
 276         while (rb_node) {
 277                 double percent;
 278
 279                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 280                 percent = chain->hit * 100.0 / total_samples;
 281                 switch (callchain_param.mode) {
 282                 case CHAIN_FLAT:
 283                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 284                                                      percent);
 285                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 286                         break;
 287                 case CHAIN_GRAPH_ABS: /* Falldown */
 288                 case CHAIN_GRAPH_REL:
 289                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 290                                                         left_margin);
 291                 case CHAIN_NONE:
 292                 default:
 293                         break;
 294                 }
 295                 ret += fprintf(fp, "\n");
 296                 rb_node = rb_next(rb_node);
 297         }
 298
 299         return ret;
 300 }
 301
 302 static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
 303                                   struct perf_session *session)
 304 {
 305         struct sort_entry *se;
 306         size_t ret;
 307
 308         if (symbol_conf.exclude_other && !self->parent)
 309                 return 0;
 310
 311         if (session->events_stats.total)
 312                 ret = percent_color_fprintf(fp,
 313                                             symbol_conf.field_sep ? "%.2f" : "   %6.2f%%",
 314                                         (self->count * 100.0) / session->events_stats.total);
 315         else
 316                 ret = fprintf(fp, symbol_conf.field_sep ? "%lld" : "%12lld ", self->count);
 317
 318         if (symbol_conf.show_nr_samples) {
 319                 if (symbol_conf.field_sep)
 320                         fprintf(fp, "%c%lld", *symbol_conf.field_sep, self->count);
 321                 else
 322                         fprintf(fp, "%11lld", self->count);
 323         }
 324
 325         list_for_each_entry(se, &hist_entry__sort_list, list) {
 326                 if (se->elide)
 327                         continue;
 328
 329                 fprintf(fp, "%s", symbol_conf.field_sep ?: "  ");
 330                 ret += se->print(fp, self, se->width ? *se->width : 0);
 331         }
 332
 333         ret += fprintf(fp, "\n");
 334
 335         if (symbol_conf.use_callchain) {
 336                 int left_margin = 0;
 337
 338                 if (sort__first_dimension == SORT_COMM) {
 339                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 340                                                 list);
 341                         left_margin = se->width ? *se->width : 0;
 342                         left_margin -= thread__comm_len(self->thread);
 343                 }
 344
 345                 hist_entry_callchain__fprintf(fp, self, session->events_stats.total,
 346                                               left_margin);
 347         }
 348
 349         return ret;
 350 }
 351
 352 /*
 353  * collect histogram counts
 354  */
 355
 356 static int perf_session__add_hist_entry(struct perf_session *self,
 357                                         struct addr_location *al,
 358                                         struct ip_callchain *chain, u64 count)
 359 {
 360         struct symbol **syms = NULL, *parent = NULL;
 361         bool hit;
 362         struct hist_entry *he;
 363
 364         if ((sort__has_parent || symbol_conf.use_callchain) && chain)
 365                 syms = perf_session__resolve_callchain(self, al->thread,
 366                                                        chain, &parent);
 367         he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
 368         if (he == NULL)
 369                 return -ENOMEM;
 370
 371         if (hit)
 372                 he->count += count;
 373
 374         if (symbol_conf.use_callchain) {
 375                 if (!hit)
 376                         callchain_init(&he->callchain);
 377                 append_chain(&he->callchain, chain, syms);
 378                 free(syms);
 379         }
 380
 381         return 0;
 382 }
 383
 384 static size_t perf_session__fprintf_hists(struct perf_session *self, FILE *fp)
 385 {
 386         struct hist_entry *pos;
 387         struct sort_entry *se;
 388         struct rb_node *nd;
 389         size_t ret = 0;
 390         unsigned int width;
 391         char *col_width = symbol_conf.col_width_list_str;
 392
 393         init_rem_hits();
 394
 395         fprintf(fp, "# Samples: %ld\n", self->events_stats.total);
 396         fprintf(fp, "#\n");
 397
 398         fprintf(fp, "# Overhead");
 399         if (symbol_conf.show_nr_samples) {
 400                 if (symbol_conf.field_sep)
 401                         fprintf(fp, "%cSamples", *symbol_conf.field_sep);
 402                 else
 403                         fputs("  Samples  ", fp);
 404         }
 405         list_for_each_entry(se, &hist_entry__sort_list, list) {
 406                 if (se->elide)
 407                         continue;
 408                 if (symbol_conf.field_sep) {
 409                         fprintf(fp, "%c%s", *symbol_conf.field_sep, se->header);
 410                         continue;
 411                 }
 412                 width = strlen(se->header);
 413                 if (se->width) {
 414                         if (symbol_conf.col_width_list_str) {
 415                                 if (col_width) {
 416                                         *se->width = atoi(col_width);
 417                                         col_width = strchr(col_width, ',');
 418                                         if (col_width)
 419                                                 ++col_width;
 420                                 }
 421                         }
 422                         width = *se->width = max(*se->width, width);
 423                 }
 424                 fprintf(fp, "  %*s", width, se->header);
 425         }
 426         fprintf(fp, "\n");
 427
 428         if (symbol_conf.field_sep)
 429                 goto print_entries;
 430
 431         fprintf(fp, "# ........");
 432         if (symbol_conf.show_nr_samples)
 433                 fprintf(fp, " ..........");
 434         list_for_each_entry(se, &hist_entry__sort_list, list) {
 435                 unsigned int i;
 436
 437                 if (se->elide)
 438                         continue;
 439
 440                 fprintf(fp, "  ");
 441                 if (se->width)
 442                         width = *se->width;
 443                 else
 444                         width = strlen(se->header);
 445                 for (i = 0; i < width; i++)
 446                         fprintf(fp, ".");
 447         }
 448         fprintf(fp, "\n");
 449
 450         fprintf(fp, "#\n");
 451
 452 print_entries:
 453         for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
 454                 pos = rb_entry(nd, struct hist_entry, rb_node);
 455                 ret += hist_entry__fprintf(fp, pos, self);
 456         }
 457
 458         if (sort_order == default_sort_order &&
 459                         parent_pattern == default_parent_pattern) {
 460                 fprintf(fp, "#\n");
 461                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 462                 fprintf(fp, "#\n");
 463         }
 464         fprintf(fp, "\n");
 465
 466         free(rem_sq_bracket);
 467
 468         return ret;
 469 }
 470
 471 static int validate_chain(struct ip_callchain *chain, event_t *event)
 472 {
 473         unsigned int chain_size;
 474
 475         chain_size = event->header.size;
 476         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 477
 478         if (chain->nr*sizeof(u64) > chain_size)
 479                 return -1;
 480
 481         return 0;
 482 }
 483
 484 static int process_sample_event(event_t *event, struct perf_session *session)
 485 {
 486         struct sample_data data = { .period = 1, };
 487         struct addr_location al;
 488
 489         event__parse_sample(event, session->sample_type, &data);
 490
 491         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 492                 event->header.misc,
 493                 data.pid, data.tid,
 494                 (void *)(long)data.ip,
 495                 (long long)data.period);
 496
 497         if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
 498                 unsigned int i;
 499
 500                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 501
 502                 if (validate_chain(data.callchain, event) < 0) {
 503                         pr_debug("call-chain problem with event, "
 504                                  "skipping it.\n");
 505                         return 0;
 506                 }
 507
 508                 if (dump_trace) {
 509                         for (i = 0; i < data.callchain->nr; i++)
 510                                 dump_printf("..... %2d: %016Lx\n",
 511                                             i, data.callchain->ips[i]);
 512                 }
 513         }
 514
 515         if (event__preprocess_sample(event, session, &al, NULL) < 0) {
 516                 fprintf(stderr, "problem processing %d event, skipping it.\n",
 517                         event->header.type);
 518                 return -1;
 519         }
 520
 521         if (al.filtered)
 522                 return 0;
 523
 524         if (perf_session__add_hist_entry(session, &al, data.callchain, data.period)) {
 525                 pr_debug("problem incrementing symbol count, skipping event\n");
 526                 return -1;
 527         }
 528
 529         session->events_stats.total += data.period;
 530         return 0;
 531 }
 532
 533 static int process_read_event(event_t *event, struct perf_session *session __used)
 534 {
 535         struct perf_event_attr *attr;
 536
 537         attr = perf_header__find_attr(event->read.id, &session->header);
 538
 539         if (show_threads) {
 540                 const char *name = attr ? __event_name(attr->type, attr->config)
 541                                    : "unknown";
 542                 perf_read_values_add_value(&show_threads_values,
 543                                            event->read.pid, event->read.tid,
 544                                            event->read.id,
 545                                            name,
 546                                            event->read.value);
 547         }
 548
 549         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 550                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 551                     event->read.value);
 552
 553         return 0;
 554 }
 555
 556 static int sample_type_check(struct perf_session *session)
 557 {
 558         if (!(session->sample_type & PERF_SAMPLE_CALLCHAIN)) {
 559                 if (sort__has_parent) {
 560                         fprintf(stderr, "selected --sort parent, but no"
 561                                         " callchain data. Did you call"
 562                                         " perf record without -g?\n");
 563                         return -1;
 564                 }
 565                 if (symbol_conf.use_callchain) {
 566                         fprintf(stderr, "selected -g but no callchain data."
 567                                         " Did you call perf record without"
 568                                         " -g?\n");
 569                         return -1;
 570                 }
 571         } else if (callchain_param.mode != CHAIN_NONE && !symbol_conf.use_callchain) {
 572                         symbol_conf.use_callchain = true;
 573                         if (register_callchain_param(&callchain_param) < 0) {
 574                                 fprintf(stderr, "Can't register callchain"
 575                                                 " params\n");
 576                                 return -1;
 577                         }
 578         }
 579
 580         return 0;
 581 }
 582
 583 static struct perf_event_ops event_ops = {
 584         .process_sample_event   = process_sample_event,
 585         .process_mmap_event     = event__process_mmap,
 586         .process_comm_event     = event__process_mmap,
 587         .process_exit_event     = event__process_task,
 588         .process_fork_event     = event__process_task,
 589         .process_lost_event     = event__process_lost,
 590         .process_read_event     = process_read_event,
 591         .sample_type_check      = sample_type_check,
 592 };
 593
 594
 595 static int __cmd_report(void)
 596 {
 597         int ret;
 598         struct perf_session *session;
 599
 600         session = perf_session__new(input_name, O_RDONLY, force);
 601         if (session == NULL)
 602                 return -ENOMEM;
 603
 604         if (show_threads)
 605                 perf_read_values_init(&show_threads_values);
 606
 607         ret = perf_session__process_events(session, &event_ops);
 608         if (ret)
 609                 goto out_delete;
 610
 611         if (dump_trace) {
 612                 event__print_totals();
 613                 goto out_delete;
 614         }
 615
 616         if (verbose > 3)
 617                 perf_session__fprintf(session, stdout);
 618
 619         if (verbose > 2)
 620                 dsos__fprintf(stdout);
 621
 622         perf_session__collapse_resort(session);
 623         perf_session__output_resort(session, session->events_stats.total);
 624         perf_session__fprintf_hists(session, stdout);
 625         if (show_threads) {
 626                 bool raw_printing_style = !strcmp(pretty_printing_style, "raw");
 627                 perf_read_values_display(stdout, &show_threads_values,
 628                                          raw_printing_style);
 629                 perf_read_values_destroy(&show_threads_values);
 630         }
 631 out_delete:
 632         perf_session__delete(session);
 633         return ret;
 634 }
 635
 636 static int
 637 parse_callchain_opt(const struct option *opt __used, const char *arg,
 638                     int unset __used)
 639 {
 640         char *tok;
 641         char *endptr;
 642
 643         symbol_conf.use_callchain = true;
 644
 645         if (!arg)
 646                 return 0;
 647
 648         tok = strtok((char *)arg, ",");
 649         if (!tok)
 650                 return -1;
 651
 652         /* get the output mode */
 653         if (!strncmp(tok, "graph", strlen(arg)))
 654                 callchain_param.mode = CHAIN_GRAPH_ABS;
 655
 656         else if (!strncmp(tok, "flat", strlen(arg)))
 657                 callchain_param.mode = CHAIN_FLAT;
 658
 659         else if (!strncmp(tok, "fractal", strlen(arg)))
 660                 callchain_param.mode = CHAIN_GRAPH_REL;
 661
 662         else if (!strncmp(tok, "none", strlen(arg))) {
 663                 callchain_param.mode = CHAIN_NONE;
 664                 symbol_conf.use_callchain = true;
 665
 666                 return 0;
 667         }
 668
 669         else
 670                 return -1;
 671
 672         /* get the min percentage */
 673         tok = strtok(NULL, ",");
 674         if (!tok)
 675                 goto setup;
 676
 677         callchain_param.min_percent = strtod(tok, &endptr);
 678         if (tok == endptr)
 679                 return -1;
 680
 681 setup:
 682         if (register_callchain_param(&callchain_param) < 0) {
 683                 fprintf(stderr, "Can't register callchain params\n");
 684                 return -1;
 685         }
 686         return 0;
 687 }
 688
 689 //static const char * const report_usage[] = {
 690 const char * const report_usage[] = {
 691         "perf report [<options>] <command>",
 692         NULL
 693 };
 694
 695 static const struct option options[] = {
 696         OPT_STRING('i', "input", &input_name, "file",
 697                     "input file name"),
 698         OPT_BOOLEAN('v', "verbose", &verbose,
 699                     "be more verbose (show symbol address, etc)"),
 700         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 701                     "dump raw trace in ASCII"),
 702         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 703                    "file", "vmlinux pathname"),
 704         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 705         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 706                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 707         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 708                     "Show a column with the number of samples"),
 709         OPT_BOOLEAN('T', "threads", &show_threads,
 710                     "Show per-thread event counters"),
 711         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 712                    "pretty printing style key: normal raw"),
 713         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 714                    "sort by key(s): pid, comm, dso, symbol, parent"),
 715         OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
 716                     "Don't shorten the pathnames taking into account the cwd"),
 717         OPT_STRING('p', "parent", &parent_pattern, "regex",
 718                    "regex filter to identify parent, see: '--sort parent'"),
 719         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 720                     "Only display entries with parent-match"),
 721         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 722                      "Display callchains using output_type and min percent threshold. "
 723                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 724         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 725                    "only consider symbols in these dsos"),
 726         OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 727                    "only consider symbols in these comms"),
 728         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 729                    "only consider these symbols"),
 730         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
 731                    "width[,width...]",
 732                    "don't try to adjust column width, use these fixed values"),
 733         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
 734                    "separator for columns, no spaces will be added between "
 735                    "columns '.' is reserved."),
 736         OPT_END()
 737 };
 738
 739 static void sort_entry__setup_elide(struct sort_entry *self,
 740                                     struct strlist *list,
 741                                     const char *list_name, FILE *fp)
 742 {
 743         if (list && strlist__nr_entries(list) == 1) {
 744                 fprintf(fp, "# %s: %s\n", list_name, strlist__entry(list, 0)->s);
 745                 self->elide = true;
 746         }
 747 }
 748
 749 int cmd_report(int argc, const char **argv, const char *prefix __used)
 750 {
 751         argc = parse_options(argc, argv, options, report_usage, 0);
 752
 753         setup_pager();
 754
 755         if (symbol__init() < 0)
 756                 return -1;
 757
 758         setup_sorting(report_usage, options);
 759
 760         if (parent_pattern != default_parent_pattern) {
 761                 sort_dimension__add("parent");
 762                 sort_parent.elide = 1;
 763         } else
 764                 symbol_conf.exclude_other = false;
 765
 766         /*
 767          * Any (unrecognized) arguments left?
 768          */
 769         if (argc)
 770                 usage_with_options(report_usage, options);
 771
 772         sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
 773         sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
 774         sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
 775
 776         return __cmd_report();
 777 }