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 u64              sample_type;
  56
  57 struct symbol_conf      symbol_conf;
  58
  59
  60 static size_t
  61 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  62 {
  63         int i;
  64         int ret;
  65
  66         ret = fprintf(fp, "            ");
  67
  68         for (i = 0; i < left_margin; i++)
  69                 ret += fprintf(fp, " ");
  70
  71         return ret;
  72 }
  73
  74 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  75                                           int left_margin)
  76 {
  77         int i;
  78         size_t ret = 0;
  79
  80         ret += callchain__fprintf_left_margin(fp, left_margin);
  81
  82         for (i = 0; i < depth; i++)
  83                 if (depth_mask & (1 << i))
  84                         ret += fprintf(fp, "|          ");
  85                 else
  86                         ret += fprintf(fp, "           ");
  87
  88         ret += fprintf(fp, "\n");
  89
  90         return ret;
  91 }
  92 static size_t
  93 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  94                        int depth_mask, int count, u64 total_samples,
  95                        int hits, int left_margin)
  96 {
  97         int i;
  98         size_t ret = 0;
  99
 100         ret += callchain__fprintf_left_margin(fp, left_margin);
 101         for (i = 0; i < depth; i++) {
 102                 if (depth_mask & (1 << i))
 103                         ret += fprintf(fp, "|");
 104                 else
 105                         ret += fprintf(fp, " ");
 106                 if (!count && i == depth - 1) {
 107                         double percent;
 108
 109                         percent = hits * 100.0 / total_samples;
 110                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 111                 } else
 112                         ret += fprintf(fp, "%s", "          ");
 113         }
 114         if (chain->sym)
 115                 ret += fprintf(fp, "%s\n", chain->sym->name);
 116         else
 117                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 118
 119         return ret;
 120 }
 121
 122 static struct symbol *rem_sq_bracket;
 123 static struct callchain_list rem_hits;
 124
 125 static void init_rem_hits(void)
 126 {
 127         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 128         if (!rem_sq_bracket) {
 129                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 130                 return;
 131         }
 132
 133         strcpy(rem_sq_bracket->name, "[...]");
 134         rem_hits.sym = rem_sq_bracket;
 135 }
 136
 137 static size_t
 138 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 139                            u64 total_samples, int depth, int depth_mask,
 140                            int left_margin)
 141 {
 142         struct rb_node *node, *next;
 143         struct callchain_node *child;
 144         struct callchain_list *chain;
 145         int new_depth_mask = depth_mask;
 146         u64 new_total;
 147         u64 remaining;
 148         size_t ret = 0;
 149         int i;
 150
 151         if (callchain_param.mode == CHAIN_GRAPH_REL)
 152                 new_total = self->children_hit;
 153         else
 154                 new_total = total_samples;
 155
 156         remaining = new_total;
 157
 158         node = rb_first(&self->rb_root);
 159         while (node) {
 160                 u64 cumul;
 161
 162                 child = rb_entry(node, struct callchain_node, rb_node);
 163                 cumul = cumul_hits(child);
 164                 remaining -= cumul;
 165
 166                 /*
 167                  * The depth mask manages the output of pipes that show
 168                  * the depth. We don't want to keep the pipes of the current
 169                  * level for the last child of this depth.
 170                  * Except if we have remaining filtered hits. They will
 171                  * supersede the last child
 172                  */
 173                 next = rb_next(node);
 174                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 175                         new_depth_mask &= ~(1 << (depth - 1));
 176
 177                 /*
 178                  * But we keep the older depth mask for the line seperator
 179                  * to keep the level link until we reach the last child
 180                  */
 181                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 182                                                    left_margin);
 183                 i = 0;
 184                 list_for_each_entry(chain, &child->val, list) {
 185                         if (chain->ip >= PERF_CONTEXT_MAX)
 186                                 continue;
 187                         ret += ipchain__fprintf_graph(fp, chain, depth,
 188                                                       new_depth_mask, i++,
 189                                                       new_total,
 190                                                       cumul,
 191                                                       left_margin);
 192                 }
 193                 ret += __callchain__fprintf_graph(fp, child, new_total,
 194                                                   depth + 1,
 195                                                   new_depth_mask | (1 << depth),
 196                                                   left_margin);
 197                 node = next;
 198         }
 199
 200         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 201                 remaining && remaining != new_total) {
 202
 203                 if (!rem_sq_bracket)
 204                         return ret;
 205
 206                 new_depth_mask &= ~(1 << (depth - 1));
 207
 208                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 209                                               new_depth_mask, 0, new_total,
 210                                               remaining, left_margin);
 211         }
 212
 213         return ret;
 214 }
 215
 216
 217 static size_t
 218 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 219                          u64 total_samples, int left_margin)
 220 {
 221         struct callchain_list *chain;
 222         bool printed = false;
 223         int i = 0;
 224         int ret = 0;
 225
 226         list_for_each_entry(chain, &self->val, list) {
 227                 if (chain->ip >= PERF_CONTEXT_MAX)
 228                         continue;
 229
 230                 if (!i++ && sort__first_dimension == SORT_SYM)
 231                         continue;
 232
 233                 if (!printed) {
 234                         ret += callchain__fprintf_left_margin(fp, left_margin);
 235                         ret += fprintf(fp, "|\n");
 236                         ret += callchain__fprintf_left_margin(fp, left_margin);
 237                         ret += fprintf(fp, "---");
 238
 239                         left_margin += 3;
 240                         printed = true;
 241                 } else
 242                         ret += callchain__fprintf_left_margin(fp, left_margin);
 243
 244                 if (chain->sym)
 245                         ret += fprintf(fp, " %s\n", chain->sym->name);
 246                 else
 247                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 248         }
 249
 250         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 251
 252         return ret;
 253 }
 254
 255 static size_t
 256 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 257                         u64 total_samples)
 258 {
 259         struct callchain_list *chain;
 260         size_t ret = 0;
 261
 262         if (!self)
 263                 return 0;
 264
 265         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 266
 267
 268         list_for_each_entry(chain, &self->val, list) {
 269                 if (chain->ip >= PERF_CONTEXT_MAX)
 270                         continue;
 271                 if (chain->sym)
 272                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 273                 else
 274                         ret += fprintf(fp, "                %p\n",
 275                                         (void *)(long)chain->ip);
 276         }
 277
 278         return ret;
 279 }
 280
 281 static size_t
 282 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 283                               u64 total_samples, int left_margin)
 284 {
 285         struct rb_node *rb_node;
 286         struct callchain_node *chain;
 287         size_t ret = 0;
 288
 289         rb_node = rb_first(&self->sorted_chain);
 290         while (rb_node) {
 291                 double percent;
 292
 293                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 294                 percent = chain->hit * 100.0 / total_samples;
 295                 switch (callchain_param.mode) {
 296                 case CHAIN_FLAT:
 297                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 298                                                      percent);
 299                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 300                         break;
 301                 case CHAIN_GRAPH_ABS: /* Falldown */
 302                 case CHAIN_GRAPH_REL:
 303                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 304                                                         left_margin);
 305                 case CHAIN_NONE:
 306                 default:
 307                         break;
 308                 }
 309                 ret += fprintf(fp, "\n");
 310                 rb_node = rb_next(rb_node);
 311         }
 312
 313         return ret;
 314 }
 315
 316 static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
 317                                   struct perf_session *session,
 318                                   u64 total_samples)
 319 {
 320         struct sort_entry *se;
 321         size_t ret;
 322
 323         if (exclude_other && !self->parent)
 324                 return 0;
 325
 326         if (total_samples)
 327                 ret = percent_color_fprintf(fp,
 328                                             field_sep ? "%.2f" : "   %6.2f%%",
 329                                         (self->count * 100.0) / total_samples);
 330         else
 331                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 332
 333         if (show_nr_samples) {
 334                 if (field_sep)
 335                         fprintf(fp, "%c%lld", *field_sep, self->count);
 336                 else
 337                         fprintf(fp, "%11lld", self->count);
 338         }
 339
 340         list_for_each_entry(se, &hist_entry__sort_list, list) {
 341                 if (se->elide)
 342                         continue;
 343
 344                 fprintf(fp, "%s", field_sep ?: "  ");
 345                 ret += se->print(fp, self, se->width ? *se->width : 0);
 346         }
 347
 348         ret += fprintf(fp, "\n");
 349
 350         if (session->use_callchain) {
 351                 int left_margin = 0;
 352
 353                 if (sort__first_dimension == SORT_COMM) {
 354                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 355                                                 list);
 356                         left_margin = se->width ? *se->width : 0;
 357                         left_margin -= thread__comm_len(self->thread);
 358                 }
 359
 360                 hist_entry_callchain__fprintf(fp, self, total_samples,
 361                                               left_margin);
 362         }
 363
 364         return ret;
 365 }
 366
 367 /*
 368  *
 369  */
 370
 371 static void dso__calc_col_width(struct dso *self)
 372 {
 373         if (!col_width_list_str && !field_sep &&
 374             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 375                 unsigned int slen = strlen(self->name);
 376                 if (slen > dsos__col_width)
 377                         dsos__col_width = slen;
 378         }
 379
 380         self->slen_calculated = 1;
 381 }
 382
 383 static void thread__comm_adjust(struct thread *self)
 384 {
 385         char *comm = self->comm;
 386
 387         if (!col_width_list_str && !field_sep &&
 388             (!comm_list || strlist__has_entry(comm_list, comm))) {
 389                 unsigned int slen = strlen(comm);
 390
 391                 if (slen > comms__col_width) {
 392                         comms__col_width = slen;
 393                         threads__col_width = slen + 6;
 394                 }
 395         }
 396 }
 397
 398 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 399 {
 400         int ret = thread__set_comm(self, comm);
 401
 402         if (ret)
 403                 return ret;
 404
 405         thread__comm_adjust(self);
 406
 407         return 0;
 408 }
 409
 410 /*
 411  * collect histogram counts
 412  */
 413
 414 static int perf_session__add_hist_entry(struct perf_session *self,
 415                                         struct addr_location *al,
 416                                         struct ip_callchain *chain, u64 count)
 417 {
 418         struct symbol **syms = NULL, *parent = NULL;
 419         bool hit;
 420         struct hist_entry *he;
 421
 422         if ((sort__has_parent || self->use_callchain) && chain)
 423                 syms = perf_session__resolve_callchain(self, al->thread,
 424                                                        chain, &parent);
 425         he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
 426         if (he == NULL)
 427                 return -ENOMEM;
 428
 429         if (hit)
 430                 he->count += count;
 431
 432         if (self->use_callchain) {
 433                 if (!hit)
 434                         callchain_init(&he->callchain);
 435                 append_chain(&he->callchain, chain, syms);
 436                 free(syms);
 437         }
 438
 439         return 0;
 440 }
 441
 442 static size_t perf_session__fprintf_hist_entries(struct perf_session *self,
 443                                                  u64 total_samples, FILE *fp)
 444 {
 445         struct hist_entry *pos;
 446         struct sort_entry *se;
 447         struct rb_node *nd;
 448         size_t ret = 0;
 449         unsigned int width;
 450         char *col_width = col_width_list_str;
 451         int raw_printing_style;
 452
 453         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 454
 455         init_rem_hits();
 456
 457         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 458         fprintf(fp, "#\n");
 459
 460         fprintf(fp, "# Overhead");
 461         if (show_nr_samples) {
 462                 if (field_sep)
 463                         fprintf(fp, "%cSamples", *field_sep);
 464                 else
 465                         fputs("  Samples  ", fp);
 466         }
 467         list_for_each_entry(se, &hist_entry__sort_list, list) {
 468                 if (se->elide)
 469                         continue;
 470                 if (field_sep) {
 471                         fprintf(fp, "%c%s", *field_sep, se->header);
 472                         continue;
 473                 }
 474                 width = strlen(se->header);
 475                 if (se->width) {
 476                         if (col_width_list_str) {
 477                                 if (col_width) {
 478                                         *se->width = atoi(col_width);
 479                                         col_width = strchr(col_width, ',');
 480                                         if (col_width)
 481                                                 ++col_width;
 482                                 }
 483                         }
 484                         width = *se->width = max(*se->width, width);
 485                 }
 486                 fprintf(fp, "  %*s", width, se->header);
 487         }
 488         fprintf(fp, "\n");
 489
 490         if (field_sep)
 491                 goto print_entries;
 492
 493         fprintf(fp, "# ........");
 494         if (show_nr_samples)
 495                 fprintf(fp, " ..........");
 496         list_for_each_entry(se, &hist_entry__sort_list, list) {
 497                 unsigned int i;
 498
 499                 if (se->elide)
 500                         continue;
 501
 502                 fprintf(fp, "  ");
 503                 if (se->width)
 504                         width = *se->width;
 505                 else
 506                         width = strlen(se->header);
 507                 for (i = 0; i < width; i++)
 508                         fprintf(fp, ".");
 509         }
 510         fprintf(fp, "\n");
 511
 512         fprintf(fp, "#\n");
 513
 514 print_entries:
 515         for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
 516                 pos = rb_entry(nd, struct hist_entry, rb_node);
 517                 ret += hist_entry__fprintf(fp, pos, self, total_samples);
 518         }
 519
 520         if (sort_order == default_sort_order &&
 521                         parent_pattern == default_parent_pattern) {
 522                 fprintf(fp, "#\n");
 523                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 524                 fprintf(fp, "#\n");
 525         }
 526         fprintf(fp, "\n");
 527
 528         free(rem_sq_bracket);
 529
 530         if (show_threads)
 531                 perf_read_values_display(fp, &show_threads_values,
 532                                          raw_printing_style);
 533
 534         return ret;
 535 }
 536
 537 static int validate_chain(struct ip_callchain *chain, event_t *event)
 538 {
 539         unsigned int chain_size;
 540
 541         chain_size = event->header.size;
 542         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 543
 544         if (chain->nr*sizeof(u64) > chain_size)
 545                 return -1;
 546
 547         return 0;
 548 }
 549
 550 static int process_sample_event(event_t *event, struct perf_session *session)
 551 {
 552         struct sample_data data;
 553         int cpumode;
 554         struct addr_location al;
 555         struct thread *thread;
 556
 557         memset(&data, 0, sizeof(data));
 558         data.period = 1;
 559
 560         event__parse_sample(event, sample_type, &data);
 561
 562         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 563                 event->header.misc,
 564                 data.pid, data.tid,
 565                 (void *)(long)data.ip,
 566                 (long long)data.period);
 567
 568         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 569                 unsigned int i;
 570
 571                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 572
 573                 if (validate_chain(data.callchain, event) < 0) {
 574                         pr_debug("call-chain problem with event, "
 575                                  "skipping it.\n");
 576                         return 0;
 577                 }
 578
 579                 if (dump_trace) {
 580                         for (i = 0; i < data.callchain->nr; i++)
 581                                 dump_printf("..... %2d: %016Lx\n",
 582                                             i, data.callchain->ips[i]);
 583                 }
 584         }
 585
 586         thread = perf_session__findnew(session, data.pid);
 587         if (thread == NULL) {
 588                 pr_debug("problem processing %d event, skipping it.\n",
 589                         event->header.type);
 590                 return -1;
 591         }
 592
 593         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 594
 595         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 596                 return 0;
 597
 598         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 599
 600         thread__find_addr_location(thread, session, cpumode,
 601                                    MAP__FUNCTION, data.ip, &al, NULL);
 602         /*
 603          * We have to do this here as we may have a dso with no symbol hit that
 604          * has a name longer than the ones with symbols sampled.
 605          */
 606         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 607                 dso__calc_col_width(al.map->dso);
 608
 609         if (dso_list &&
 610             (!al.map || !al.map->dso ||
 611              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
 612                (al.map->dso->short_name != al.map->dso->long_name &&
 613                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
 614                 return 0;
 615
 616         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 617                 return 0;
 618
 619         if (perf_session__add_hist_entry(session, &al, data.callchain, data.period)) {
 620                 pr_debug("problem incrementing symbol count, skipping event\n");
 621                 return -1;
 622         }
 623
 624         event__stats.total += data.period;
 625
 626         return 0;
 627 }
 628
 629 static int process_comm_event(event_t *event, struct perf_session *session)
 630 {
 631         struct thread *thread = perf_session__findnew(session, event->comm.pid);
 632
 633         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
 634
 635         if (thread == NULL ||
 636             thread__set_comm_adjust(thread, event->comm.comm)) {
 637                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 638                 return -1;
 639         }
 640
 641         return 0;
 642 }
 643
 644 static int process_read_event(event_t *event, struct perf_session *session __used)
 645 {
 646         struct perf_event_attr *attr;
 647
 648         attr = perf_header__find_attr(event->read.id, &session->header);
 649
 650         if (show_threads) {
 651                 const char *name = attr ? __event_name(attr->type, attr->config)
 652                                    : "unknown";
 653                 perf_read_values_add_value(&show_threads_values,
 654                                            event->read.pid, event->read.tid,
 655                                            event->read.id,
 656                                            name,
 657                                            event->read.value);
 658         }
 659
 660         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 661                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 662                     event->read.value);
 663
 664         return 0;
 665 }
 666
 667 static int sample_type_check(u64 type, struct perf_session *session)
 668 {
 669         sample_type = type;
 670
 671         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 672                 if (sort__has_parent) {
 673                         fprintf(stderr, "selected --sort parent, but no"
 674                                         " callchain data. Did you call"
 675                                         " perf record without -g?\n");
 676                         return -1;
 677                 }
 678                 if (session->use_callchain) {
 679                         fprintf(stderr, "selected -g but no callchain data."
 680                                         " Did you call perf record without"
 681                                         " -g?\n");
 682                         return -1;
 683                 }
 684         } else if (callchain_param.mode != CHAIN_NONE && !session->use_callchain) {
 685                         session->use_callchain = true;
 686                         if (register_callchain_param(&callchain_param) < 0) {
 687                                 fprintf(stderr, "Can't register callchain"
 688                                                 " params\n");
 689                                 return -1;
 690                         }
 691         }
 692
 693         return 0;
 694 }
 695
 696 static struct perf_event_ops event_ops = {
 697         .process_sample_event   = process_sample_event,
 698         .process_mmap_event     = event__process_mmap,
 699         .process_comm_event     = process_comm_event,
 700         .process_exit_event     = event__process_task,
 701         .process_fork_event     = event__process_task,
 702         .process_lost_event     = event__process_lost,
 703         .process_read_event     = process_read_event,
 704         .sample_type_check      = sample_type_check,
 705 };
 706
 707
 708 static int __cmd_report(void)
 709 {
 710         int ret;
 711         struct perf_session *session;
 712
 713         session = perf_session__new(input_name, O_RDONLY, force, &symbol_conf);
 714         if (session == NULL)
 715                 return -ENOMEM;
 716
 717         session->use_callchain = use_callchain;
 718
 719         if (show_threads)
 720                 perf_read_values_init(&show_threads_values);
 721
 722         ret = perf_session__process_events(session, &event_ops);
 723         if (ret)
 724                 goto out_delete;
 725
 726         if (dump_trace) {
 727                 event__print_totals();
 728                 goto out_delete;
 729         }
 730
 731         if (verbose > 3)
 732                 perf_session__fprintf(session, stdout);
 733
 734         if (verbose > 2)
 735                 dsos__fprintf(stdout);
 736
 737         perf_session__collapse_resort(session);
 738         perf_session__output_resort(session, event__stats.total);
 739         perf_session__fprintf_hist_entries(session, event__stats.total, stdout);
 740
 741         if (show_threads)
 742                 perf_read_values_destroy(&show_threads_values);
 743 out_delete:
 744         perf_session__delete(session);
 745         return ret;
 746 }
 747
 748 static int
 749 parse_callchain_opt(const struct option *opt __used, const char *arg,
 750                     int unset __used)
 751 {
 752         char *tok;
 753         char *endptr;
 754
 755         use_callchain = true;
 756
 757         if (!arg)
 758                 return 0;
 759
 760         tok = strtok((char *)arg, ",");
 761         if (!tok)
 762                 return -1;
 763
 764         /* get the output mode */
 765         if (!strncmp(tok, "graph", strlen(arg)))
 766                 callchain_param.mode = CHAIN_GRAPH_ABS;
 767
 768         else if (!strncmp(tok, "flat", strlen(arg)))
 769                 callchain_param.mode = CHAIN_FLAT;
 770
 771         else if (!strncmp(tok, "fractal", strlen(arg)))
 772                 callchain_param.mode = CHAIN_GRAPH_REL;
 773
 774         else if (!strncmp(tok, "none", strlen(arg))) {
 775                 callchain_param.mode = CHAIN_NONE;
 776                 use_callchain = true;
 777
 778                 return 0;
 779         }
 780
 781         else
 782                 return -1;
 783
 784         /* get the min percentage */
 785         tok = strtok(NULL, ",");
 786         if (!tok)
 787                 goto setup;
 788
 789         callchain_param.min_percent = strtod(tok, &endptr);
 790         if (tok == endptr)
 791                 return -1;
 792
 793 setup:
 794         if (register_callchain_param(&callchain_param) < 0) {
 795                 fprintf(stderr, "Can't register callchain params\n");
 796                 return -1;
 797         }
 798         return 0;
 799 }
 800
 801 //static const char * const report_usage[] = {
 802 const char * const report_usage[] = {
 803         "perf report [<options>] <command>",
 804         NULL
 805 };
 806
 807 static const struct option options[] = {
 808         OPT_STRING('i', "input", &input_name, "file",
 809                     "input file name"),
 810         OPT_BOOLEAN('v', "verbose", &verbose,
 811                     "be more verbose (show symbol address, etc)"),
 812         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 813                     "dump raw trace in ASCII"),
 814         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 815                    "file", "vmlinux pathname"),
 816         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 817         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 818                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 819         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 820                     "Show a column with the number of samples"),
 821         OPT_BOOLEAN('T', "threads", &show_threads,
 822                     "Show per-thread event counters"),
 823         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 824                    "pretty printing style key: normal raw"),
 825         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 826                    "sort by key(s): pid, comm, dso, symbol, parent"),
 827         OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
 828                     "Don't shorten the pathnames taking into account the cwd"),
 829         OPT_STRING('p', "parent", &parent_pattern, "regex",
 830                    "regex filter to identify parent, see: '--sort parent'"),
 831         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 832                     "Only display entries with parent-match"),
 833         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 834                      "Display callchains using output_type and min percent threshold. "
 835                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 836         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 837                    "only consider symbols in these dsos"),
 838         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 839                    "only consider symbols in these comms"),
 840         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 841                    "only consider these symbols"),
 842         OPT_STRING('w', "column-widths", &col_width_list_str,
 843                    "width[,width...]",
 844                    "don't try to adjust column width, use these fixed values"),
 845         OPT_STRING('t', "field-separator", &field_sep, "separator",
 846                    "separator for columns, no spaces will be added between "
 847                    "columns '.' is reserved."),
 848         OPT_END()
 849 };
 850
 851 static void setup_sorting(void)
 852 {
 853         char *tmp, *tok, *str = strdup(sort_order);
 854
 855         for (tok = strtok_r(str, ", ", &tmp);
 856                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 857                 if (sort_dimension__add(tok) < 0) {
 858                         error("Unknown --sort key: `%s'", tok);
 859                         usage_with_options(report_usage, options);
 860                 }
 861         }
 862
 863         free(str);
 864 }
 865
 866 static void setup_list(struct strlist **list, const char *list_str,
 867                        struct sort_entry *se, const char *list_name,
 868                        FILE *fp)
 869 {
 870         if (list_str) {
 871                 *list = strlist__new(true, list_str);
 872                 if (!*list) {
 873                         fprintf(stderr, "problems parsing %s list\n",
 874                                 list_name);
 875                         exit(129);
 876                 }
 877                 if (strlist__nr_entries(*list) == 1) {
 878                         fprintf(fp, "# %s: %s\n", list_name,
 879                                 strlist__entry(*list, 0)->s);
 880                         se->elide = true;
 881                 }
 882         }
 883 }
 884
 885 int cmd_report(int argc, const char **argv, const char *prefix __used)
 886 {
 887         if (symbol__init(&symbol_conf) < 0)
 888                 return -1;
 889
 890         argc = parse_options(argc, argv, options, report_usage, 0);
 891
 892         setup_sorting();
 893
 894         if (parent_pattern != default_parent_pattern) {
 895                 sort_dimension__add("parent");
 896                 sort_parent.elide = 1;
 897         } else
 898                 exclude_other = 0;
 899
 900         /*
 901          * Any (unrecognized) arguments left?
 902          */
 903         if (argc)
 904                 usage_with_options(report_usage, options);
 905
 906         setup_pager();
 907
 908         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
 909         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
 910         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
 911
 912         if (field_sep && *field_sep == '.') {
 913                 fputs("'.' is the only non valid --field-separator argument\n",
 914                       stderr);
 915                 exit(129);
 916         }
 917
 918         return __cmd_report();
 919 }