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 static bool             use_callchain;
  38
  39 static int              show_nr_samples;
  40
  41 static int              show_threads;
  42 static struct perf_read_values  show_threads_values;
  43
  44 static char             default_pretty_printing_style[] = "normal";
  45 static char             *pretty_printing_style = default_pretty_printing_style;
  46
  47 static int              exclude_other = 1;
  48
  49 static char             callchain_default_opt[] = "fractal,0.5";
  50
  51 static size_t
  52 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  53 {
  54         int i;
  55         int ret;
  56
  57         ret = fprintf(fp, "            ");
  58
  59         for (i = 0; i < left_margin; i++)
  60                 ret += fprintf(fp, " ");
  61
  62         return ret;
  63 }
  64
  65 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  66                                           int left_margin)
  67 {
  68         int i;
  69         size_t ret = 0;
  70
  71         ret += callchain__fprintf_left_margin(fp, left_margin);
  72
  73         for (i = 0; i < depth; i++)
  74                 if (depth_mask & (1 << i))
  75                         ret += fprintf(fp, "|          ");
  76                 else
  77                         ret += fprintf(fp, "           ");
  78
  79         ret += fprintf(fp, "\n");
  80
  81         return ret;
  82 }
  83 static size_t
  84 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  85                        int depth_mask, int count, u64 total_samples,
  86                        int hits, int left_margin)
  87 {
  88         int i;
  89         size_t ret = 0;
  90
  91         ret += callchain__fprintf_left_margin(fp, left_margin);
  92         for (i = 0; i < depth; i++) {
  93                 if (depth_mask & (1 << i))
  94                         ret += fprintf(fp, "|");
  95                 else
  96                         ret += fprintf(fp, " ");
  97                 if (!count && i == depth - 1) {
  98                         double percent;
  99
 100                         percent = hits * 100.0 / total_samples;
 101                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 102                 } else
 103                         ret += fprintf(fp, "%s", "          ");
 104         }
 105         if (chain->sym)
 106                 ret += fprintf(fp, "%s\n", chain->sym->name);
 107         else
 108                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 109
 110         return ret;
 111 }
 112
 113 static struct symbol *rem_sq_bracket;
 114 static struct callchain_list rem_hits;
 115
 116 static void init_rem_hits(void)
 117 {
 118         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 119         if (!rem_sq_bracket) {
 120                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 121                 return;
 122         }
 123
 124         strcpy(rem_sq_bracket->name, "[...]");
 125         rem_hits.sym = rem_sq_bracket;
 126 }
 127
 128 static size_t
 129 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 130                            u64 total_samples, int depth, int depth_mask,
 131                            int left_margin)
 132 {
 133         struct rb_node *node, *next;
 134         struct callchain_node *child;
 135         struct callchain_list *chain;
 136         int new_depth_mask = depth_mask;
 137         u64 new_total;
 138         u64 remaining;
 139         size_t ret = 0;
 140         int i;
 141
 142         if (callchain_param.mode == CHAIN_GRAPH_REL)
 143                 new_total = self->children_hit;
 144         else
 145                 new_total = total_samples;
 146
 147         remaining = new_total;
 148
 149         node = rb_first(&self->rb_root);
 150         while (node) {
 151                 u64 cumul;
 152
 153                 child = rb_entry(node, struct callchain_node, rb_node);
 154                 cumul = cumul_hits(child);
 155                 remaining -= cumul;
 156
 157                 /*
 158                  * The depth mask manages the output of pipes that show
 159                  * the depth. We don't want to keep the pipes of the current
 160                  * level for the last child of this depth.
 161                  * Except if we have remaining filtered hits. They will
 162                  * supersede the last child
 163                  */
 164                 next = rb_next(node);
 165                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 166                         new_depth_mask &= ~(1 << (depth - 1));
 167
 168                 /*
 169                  * But we keep the older depth mask for the line seperator
 170                  * to keep the level link until we reach the last child
 171                  */
 172                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 173                                                    left_margin);
 174                 i = 0;
 175                 list_for_each_entry(chain, &child->val, list) {
 176                         if (chain->ip >= PERF_CONTEXT_MAX)
 177                                 continue;
 178                         ret += ipchain__fprintf_graph(fp, chain, depth,
 179                                                       new_depth_mask, i++,
 180                                                       new_total,
 181                                                       cumul,
 182                                                       left_margin);
 183                 }
 184                 ret += __callchain__fprintf_graph(fp, child, new_total,
 185                                                   depth + 1,
 186                                                   new_depth_mask | (1 << depth),
 187                                                   left_margin);
 188                 node = next;
 189         }
 190
 191         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 192                 remaining && remaining != new_total) {
 193
 194                 if (!rem_sq_bracket)
 195                         return ret;
 196
 197                 new_depth_mask &= ~(1 << (depth - 1));
 198
 199                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 200                                               new_depth_mask, 0, new_total,
 201                                               remaining, left_margin);
 202         }
 203
 204         return ret;
 205 }
 206
 207
 208 static size_t
 209 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 210                          u64 total_samples, int left_margin)
 211 {
 212         struct callchain_list *chain;
 213         bool printed = false;
 214         int i = 0;
 215         int ret = 0;
 216
 217         list_for_each_entry(chain, &self->val, list) {
 218                 if (chain->ip >= PERF_CONTEXT_MAX)
 219                         continue;
 220
 221                 if (!i++ && sort__first_dimension == SORT_SYM)
 222                         continue;
 223
 224                 if (!printed) {
 225                         ret += callchain__fprintf_left_margin(fp, left_margin);
 226                         ret += fprintf(fp, "|\n");
 227                         ret += callchain__fprintf_left_margin(fp, left_margin);
 228                         ret += fprintf(fp, "---");
 229
 230                         left_margin += 3;
 231                         printed = true;
 232                 } else
 233                         ret += callchain__fprintf_left_margin(fp, left_margin);
 234
 235                 if (chain->sym)
 236                         ret += fprintf(fp, " %s\n", chain->sym->name);
 237                 else
 238                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 239         }
 240
 241         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 242
 243         return ret;
 244 }
 245
 246 static size_t
 247 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 248                         u64 total_samples)
 249 {
 250         struct callchain_list *chain;
 251         size_t ret = 0;
 252
 253         if (!self)
 254                 return 0;
 255
 256         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 257
 258
 259         list_for_each_entry(chain, &self->val, list) {
 260                 if (chain->ip >= PERF_CONTEXT_MAX)
 261                         continue;
 262                 if (chain->sym)
 263                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 264                 else
 265                         ret += fprintf(fp, "                %p\n",
 266                                         (void *)(long)chain->ip);
 267         }
 268
 269         return ret;
 270 }
 271
 272 static size_t
 273 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 274                               u64 total_samples, int left_margin)
 275 {
 276         struct rb_node *rb_node;
 277         struct callchain_node *chain;
 278         size_t ret = 0;
 279
 280         rb_node = rb_first(&self->sorted_chain);
 281         while (rb_node) {
 282                 double percent;
 283
 284                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 285                 percent = chain->hit * 100.0 / total_samples;
 286                 switch (callchain_param.mode) {
 287                 case CHAIN_FLAT:
 288                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 289                                                      percent);
 290                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 291                         break;
 292                 case CHAIN_GRAPH_ABS: /* Falldown */
 293                 case CHAIN_GRAPH_REL:
 294                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 295                                                         left_margin);
 296                 case CHAIN_NONE:
 297                 default:
 298                         break;
 299                 }
 300                 ret += fprintf(fp, "\n");
 301                 rb_node = rb_next(rb_node);
 302         }
 303
 304         return ret;
 305 }
 306
 307 static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
 308                                   struct perf_session *session,
 309                                   u64 total_samples)
 310 {
 311         struct sort_entry *se;
 312         size_t ret;
 313
 314         if (exclude_other && !self->parent)
 315                 return 0;
 316
 317         if (total_samples)
 318                 ret = percent_color_fprintf(fp,
 319                                             field_sep ? "%.2f" : "   %6.2f%%",
 320                                         (self->count * 100.0) / total_samples);
 321         else
 322                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 323
 324         if (show_nr_samples) {
 325                 if (field_sep)
 326                         fprintf(fp, "%c%lld", *field_sep, self->count);
 327                 else
 328                         fprintf(fp, "%11lld", self->count);
 329         }
 330
 331         list_for_each_entry(se, &hist_entry__sort_list, list) {
 332                 if (se->elide)
 333                         continue;
 334
 335                 fprintf(fp, "%s", field_sep ?: "  ");
 336                 ret += se->print(fp, self, se->width ? *se->width : 0);
 337         }
 338
 339         ret += fprintf(fp, "\n");
 340
 341         if (session->use_callchain) {
 342                 int left_margin = 0;
 343
 344                 if (sort__first_dimension == SORT_COMM) {
 345                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 346                                                 list);
 347                         left_margin = se->width ? *se->width : 0;
 348                         left_margin -= thread__comm_len(self->thread);
 349                 }
 350
 351                 hist_entry_callchain__fprintf(fp, self, total_samples,
 352                                               left_margin);
 353         }
 354
 355         return ret;
 356 }
 357
 358 /*
 359  *
 360  */
 361
 362 static void dso__calc_col_width(struct dso *self)
 363 {
 364         if (!symbol_conf.col_width_list_str && !field_sep &&
 365             (!symbol_conf.dso_list ||
 366              strlist__has_entry(symbol_conf.dso_list, self->name))) {
 367                 unsigned int slen = strlen(self->name);
 368                 if (slen > dsos__col_width)
 369                         dsos__col_width = slen;
 370         }
 371
 372         self->slen_calculated = 1;
 373 }
 374
 375 static void thread__comm_adjust(struct thread *self)
 376 {
 377         char *comm = self->comm;
 378
 379         if (!symbol_conf.col_width_list_str && !field_sep &&
 380             (!symbol_conf.comm_list ||
 381              strlist__has_entry(symbol_conf.comm_list, comm))) {
 382                 unsigned int slen = strlen(comm);
 383
 384                 if (slen > comms__col_width) {
 385                         comms__col_width = slen;
 386                         threads__col_width = slen + 6;
 387                 }
 388         }
 389 }
 390
 391 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 392 {
 393         int ret = thread__set_comm(self, comm);
 394
 395         if (ret)
 396                 return ret;
 397
 398         thread__comm_adjust(self);
 399
 400         return 0;
 401 }
 402
 403 /*
 404  * collect histogram counts
 405  */
 406
 407 static int perf_session__add_hist_entry(struct perf_session *self,
 408                                         struct addr_location *al,
 409                                         struct ip_callchain *chain, u64 count)
 410 {
 411         struct symbol **syms = NULL, *parent = NULL;
 412         bool hit;
 413         struct hist_entry *he;
 414
 415         if ((sort__has_parent || self->use_callchain) && chain)
 416                 syms = perf_session__resolve_callchain(self, al->thread,
 417                                                        chain, &parent);
 418         he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
 419         if (he == NULL)
 420                 return -ENOMEM;
 421
 422         if (hit)
 423                 he->count += count;
 424
 425         if (self->use_callchain) {
 426                 if (!hit)
 427                         callchain_init(&he->callchain);
 428                 append_chain(&he->callchain, chain, syms);
 429                 free(syms);
 430         }
 431
 432         return 0;
 433 }
 434
 435 static size_t perf_session__fprintf_hist_entries(struct perf_session *self,
 436                                                  u64 total_samples, FILE *fp)
 437 {
 438         struct hist_entry *pos;
 439         struct sort_entry *se;
 440         struct rb_node *nd;
 441         size_t ret = 0;
 442         unsigned int width;
 443         char *col_width = symbol_conf.col_width_list_str;
 444         int raw_printing_style;
 445
 446         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 447
 448         init_rem_hits();
 449
 450         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 451         fprintf(fp, "#\n");
 452
 453         fprintf(fp, "# Overhead");
 454         if (show_nr_samples) {
 455                 if (field_sep)
 456                         fprintf(fp, "%cSamples", *field_sep);
 457                 else
 458                         fputs("  Samples  ", fp);
 459         }
 460         list_for_each_entry(se, &hist_entry__sort_list, list) {
 461                 if (se->elide)
 462                         continue;
 463                 if (field_sep) {
 464                         fprintf(fp, "%c%s", *field_sep, se->header);
 465                         continue;
 466                 }
 467                 width = strlen(se->header);
 468                 if (se->width) {
 469                         if (symbol_conf.col_width_list_str) {
 470                                 if (col_width) {
 471                                         *se->width = atoi(col_width);
 472                                         col_width = strchr(col_width, ',');
 473                                         if (col_width)
 474                                                 ++col_width;
 475                                 }
 476                         }
 477                         width = *se->width = max(*se->width, width);
 478                 }
 479                 fprintf(fp, "  %*s", width, se->header);
 480         }
 481         fprintf(fp, "\n");
 482
 483         if (field_sep)
 484                 goto print_entries;
 485
 486         fprintf(fp, "# ........");
 487         if (show_nr_samples)
 488                 fprintf(fp, " ..........");
 489         list_for_each_entry(se, &hist_entry__sort_list, list) {
 490                 unsigned int i;
 491
 492                 if (se->elide)
 493                         continue;
 494
 495                 fprintf(fp, "  ");
 496                 if (se->width)
 497                         width = *se->width;
 498                 else
 499                         width = strlen(se->header);
 500                 for (i = 0; i < width; i++)
 501                         fprintf(fp, ".");
 502         }
 503         fprintf(fp, "\n");
 504
 505         fprintf(fp, "#\n");
 506
 507 print_entries:
 508         for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
 509                 pos = rb_entry(nd, struct hist_entry, rb_node);
 510                 ret += hist_entry__fprintf(fp, pos, self, total_samples);
 511         }
 512
 513         if (sort_order == default_sort_order &&
 514                         parent_pattern == default_parent_pattern) {
 515                 fprintf(fp, "#\n");
 516                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 517                 fprintf(fp, "#\n");
 518         }
 519         fprintf(fp, "\n");
 520
 521         free(rem_sq_bracket);
 522
 523         if (show_threads)
 524                 perf_read_values_display(fp, &show_threads_values,
 525                                          raw_printing_style);
 526
 527         return ret;
 528 }
 529
 530 static int validate_chain(struct ip_callchain *chain, event_t *event)
 531 {
 532         unsigned int chain_size;
 533
 534         chain_size = event->header.size;
 535         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 536
 537         if (chain->nr*sizeof(u64) > chain_size)
 538                 return -1;
 539
 540         return 0;
 541 }
 542
 543 static int process_sample_event(event_t *event, struct perf_session *session)
 544 {
 545         struct sample_data data;
 546         int cpumode;
 547         struct addr_location al;
 548         struct thread *thread;
 549
 550         memset(&data, 0, sizeof(data));
 551         data.period = 1;
 552
 553         event__parse_sample(event, session->sample_type, &data);
 554
 555         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 556                 event->header.misc,
 557                 data.pid, data.tid,
 558                 (void *)(long)data.ip,
 559                 (long long)data.period);
 560
 561         if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
 562                 unsigned int i;
 563
 564                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 565
 566                 if (validate_chain(data.callchain, event) < 0) {
 567                         pr_debug("call-chain problem with event, "
 568                                  "skipping it.\n");
 569                         return 0;
 570                 }
 571
 572                 if (dump_trace) {
 573                         for (i = 0; i < data.callchain->nr; i++)
 574                                 dump_printf("..... %2d: %016Lx\n",
 575                                             i, data.callchain->ips[i]);
 576                 }
 577         }
 578
 579         thread = perf_session__findnew(session, data.pid);
 580         if (thread == NULL) {
 581                 pr_debug("problem processing %d event, skipping it.\n",
 582                         event->header.type);
 583                 return -1;
 584         }
 585
 586         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 587
 588         if (symbol_conf.comm_list &&
 589             !strlist__has_entry(symbol_conf.comm_list, thread->comm))
 590                 return 0;
 591
 592         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 593
 594         thread__find_addr_location(thread, session, cpumode,
 595                                    MAP__FUNCTION, data.ip, &al, NULL);
 596         /*
 597          * We have to do this here as we may have a dso with no symbol hit that
 598          * has a name longer than the ones with symbols sampled.
 599          */
 600         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 601                 dso__calc_col_width(al.map->dso);
 602
 603         if (symbol_conf.dso_list &&
 604             (!al.map || !al.map->dso ||
 605              !(strlist__has_entry(symbol_conf.dso_list, al.map->dso->short_name) ||
 606                (al.map->dso->short_name != al.map->dso->long_name &&
 607                 strlist__has_entry(symbol_conf.dso_list, al.map->dso->long_name)))))
 608                 return 0;
 609
 610         if (symbol_conf.sym_list && al.sym &&
 611             !strlist__has_entry(symbol_conf.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", &symbol_conf.dso_list_str, "dso[,dso...]",
 829                    "only consider symbols in these dsos"),
 830         OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 831                    "only consider symbols in these comms"),
 832         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 833                    "only consider these symbols"),
 834         OPT_STRING('w', "column-widths", &symbol_conf.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 sort_entry__setup_elide(struct sort_entry *self,
 844                                     struct strlist *list,
 845                                     const char *list_name, FILE *fp)
 846 {
 847         if (list && strlist__nr_entries(list) == 1) {
 848                 fprintf(fp, "# %s: %s\n", list_name, strlist__entry(list, 0)->s);
 849                 self->elide = true;
 850         }
 851 }
 852
 853 int cmd_report(int argc, const char **argv, const char *prefix __used)
 854 {
 855         argc = parse_options(argc, argv, options, report_usage, 0);
 856
 857         setup_pager();
 858
 859         if (symbol__init() < 0)
 860                 return -1;
 861
 862         setup_sorting(report_usage, options);
 863
 864         if (parent_pattern != default_parent_pattern) {
 865                 sort_dimension__add("parent");
 866                 sort_parent.elide = 1;
 867         } else
 868                 exclude_other = 0;
 869
 870         /*
 871          * Any (unrecognized) arguments left?
 872          */
 873         if (argc)
 874                 usage_with_options(report_usage, options);
 875
 876         sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
 877         sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
 878         sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
 879
 880         if (field_sep && *field_sep == '.') {
 881                 fputs("'.' is the only non valid --field-separator argument\n",
 882                       stderr);
 883                 exit(129);
 884         }
 885
 886         return __cmd_report();
 887 }