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 static int call__match(struct symbol *sym)
 411 {
 412         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 413                 return 1;
 414
 415         return 0;
 416 }
 417
 418 static struct symbol **resolve_callchain(struct thread *thread,
 419                                          struct perf_session *session,
 420                                          struct ip_callchain *chain,
 421                                          struct symbol **parent)
 422 {
 423         u8 cpumode = PERF_RECORD_MISC_USER;
 424         struct symbol **syms = NULL;
 425         unsigned int i;
 426
 427         if (session->use_callchain) {
 428                 syms = calloc(chain->nr, sizeof(*syms));
 429                 if (!syms) {
 430                         fprintf(stderr, "Can't allocate memory for symbols\n");
 431                         exit(-1);
 432                 }
 433         }
 434
 435         for (i = 0; i < chain->nr; i++) {
 436                 u64 ip = chain->ips[i];
 437                 struct addr_location al;
 438
 439                 if (ip >= PERF_CONTEXT_MAX) {
 440                         switch (ip) {
 441                         case PERF_CONTEXT_HV:
 442                                 cpumode = PERF_RECORD_MISC_HYPERVISOR;  break;
 443                         case PERF_CONTEXT_KERNEL:
 444                                 cpumode = PERF_RECORD_MISC_KERNEL;      break;
 445                         case PERF_CONTEXT_USER:
 446                                 cpumode = PERF_RECORD_MISC_USER;        break;
 447                         default:
 448                                 break;
 449                         }
 450                         continue;
 451                 }
 452
 453                 thread__find_addr_location(thread, session, cpumode,
 454                                            MAP__FUNCTION, ip, &al, NULL);
 455                 if (al.sym != NULL) {
 456                         if (sort__has_parent && !*parent &&
 457                             call__match(al.sym))
 458                                 *parent = al.sym;
 459                         if (!session->use_callchain)
 460                                 break;
 461                         syms[i] = al.sym;
 462                 }
 463         }
 464
 465         return syms;
 466 }
 467
 468 /*
 469  * collect histogram counts
 470  */
 471
 472 static int perf_session__add_hist_entry(struct perf_session *self,
 473                                         struct addr_location *al,
 474                                         struct ip_callchain *chain, u64 count)
 475 {
 476         struct symbol **syms = NULL, *parent = NULL;
 477         bool hit;
 478         struct hist_entry *he;
 479
 480         if ((sort__has_parent || self->use_callchain) && chain)
 481                 syms = resolve_callchain(al->thread, self, chain, &parent);
 482
 483         he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
 484         if (he == NULL)
 485                 return -ENOMEM;
 486
 487         if (hit)
 488                 he->count += count;
 489
 490         if (self->use_callchain) {
 491                 if (!hit)
 492                         callchain_init(&he->callchain);
 493                 append_chain(&he->callchain, chain, syms);
 494                 free(syms);
 495         }
 496
 497         return 0;
 498 }
 499
 500 static size_t perf_session__fprintf_hist_entries(struct perf_session *self,
 501                                                  u64 total_samples, FILE *fp)
 502 {
 503         struct hist_entry *pos;
 504         struct sort_entry *se;
 505         struct rb_node *nd;
 506         size_t ret = 0;
 507         unsigned int width;
 508         char *col_width = col_width_list_str;
 509         int raw_printing_style;
 510
 511         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 512
 513         init_rem_hits();
 514
 515         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 516         fprintf(fp, "#\n");
 517
 518         fprintf(fp, "# Overhead");
 519         if (show_nr_samples) {
 520                 if (field_sep)
 521                         fprintf(fp, "%cSamples", *field_sep);
 522                 else
 523                         fputs("  Samples  ", fp);
 524         }
 525         list_for_each_entry(se, &hist_entry__sort_list, list) {
 526                 if (se->elide)
 527                         continue;
 528                 if (field_sep) {
 529                         fprintf(fp, "%c%s", *field_sep, se->header);
 530                         continue;
 531                 }
 532                 width = strlen(se->header);
 533                 if (se->width) {
 534                         if (col_width_list_str) {
 535                                 if (col_width) {
 536                                         *se->width = atoi(col_width);
 537                                         col_width = strchr(col_width, ',');
 538                                         if (col_width)
 539                                                 ++col_width;
 540                                 }
 541                         }
 542                         width = *se->width = max(*se->width, width);
 543                 }
 544                 fprintf(fp, "  %*s", width, se->header);
 545         }
 546         fprintf(fp, "\n");
 547
 548         if (field_sep)
 549                 goto print_entries;
 550
 551         fprintf(fp, "# ........");
 552         if (show_nr_samples)
 553                 fprintf(fp, " ..........");
 554         list_for_each_entry(se, &hist_entry__sort_list, list) {
 555                 unsigned int i;
 556
 557                 if (se->elide)
 558                         continue;
 559
 560                 fprintf(fp, "  ");
 561                 if (se->width)
 562                         width = *se->width;
 563                 else
 564                         width = strlen(se->header);
 565                 for (i = 0; i < width; i++)
 566                         fprintf(fp, ".");
 567         }
 568         fprintf(fp, "\n");
 569
 570         fprintf(fp, "#\n");
 571
 572 print_entries:
 573         for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
 574                 pos = rb_entry(nd, struct hist_entry, rb_node);
 575                 ret += hist_entry__fprintf(fp, pos, self, total_samples);
 576         }
 577
 578         if (sort_order == default_sort_order &&
 579                         parent_pattern == default_parent_pattern) {
 580                 fprintf(fp, "#\n");
 581                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 582                 fprintf(fp, "#\n");
 583         }
 584         fprintf(fp, "\n");
 585
 586         free(rem_sq_bracket);
 587
 588         if (show_threads)
 589                 perf_read_values_display(fp, &show_threads_values,
 590                                          raw_printing_style);
 591
 592         return ret;
 593 }
 594
 595 static int validate_chain(struct ip_callchain *chain, event_t *event)
 596 {
 597         unsigned int chain_size;
 598
 599         chain_size = event->header.size;
 600         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 601
 602         if (chain->nr*sizeof(u64) > chain_size)
 603                 return -1;
 604
 605         return 0;
 606 }
 607
 608 static int process_sample_event(event_t *event, struct perf_session *session)
 609 {
 610         struct sample_data data;
 611         int cpumode;
 612         struct addr_location al;
 613         struct thread *thread;
 614
 615         memset(&data, 0, sizeof(data));
 616         data.period = 1;
 617
 618         event__parse_sample(event, sample_type, &data);
 619
 620         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 621                 event->header.misc,
 622                 data.pid, data.tid,
 623                 (void *)(long)data.ip,
 624                 (long long)data.period);
 625
 626         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 627                 unsigned int i;
 628
 629                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 630
 631                 if (validate_chain(data.callchain, event) < 0) {
 632                         pr_debug("call-chain problem with event, "
 633                                  "skipping it.\n");
 634                         return 0;
 635                 }
 636
 637                 if (dump_trace) {
 638                         for (i = 0; i < data.callchain->nr; i++)
 639                                 dump_printf("..... %2d: %016Lx\n",
 640                                             i, data.callchain->ips[i]);
 641                 }
 642         }
 643
 644         thread = perf_session__findnew(session, data.pid);
 645         if (thread == NULL) {
 646                 pr_debug("problem processing %d event, skipping it.\n",
 647                         event->header.type);
 648                 return -1;
 649         }
 650
 651         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 652
 653         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 654                 return 0;
 655
 656         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 657
 658         thread__find_addr_location(thread, session, cpumode,
 659                                    MAP__FUNCTION, data.ip, &al, NULL);
 660         /*
 661          * We have to do this here as we may have a dso with no symbol hit that
 662          * has a name longer than the ones with symbols sampled.
 663          */
 664         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 665                 dso__calc_col_width(al.map->dso);
 666
 667         if (dso_list &&
 668             (!al.map || !al.map->dso ||
 669              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
 670                (al.map->dso->short_name != al.map->dso->long_name &&
 671                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
 672                 return 0;
 673
 674         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 675                 return 0;
 676
 677         if (perf_session__add_hist_entry(session, &al, data.callchain, data.period)) {
 678                 pr_debug("problem incrementing symbol count, skipping event\n");
 679                 return -1;
 680         }
 681
 682         event__stats.total += data.period;
 683
 684         return 0;
 685 }
 686
 687 static int process_comm_event(event_t *event, struct perf_session *session)
 688 {
 689         struct thread *thread = perf_session__findnew(session, event->comm.pid);
 690
 691         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
 692
 693         if (thread == NULL ||
 694             thread__set_comm_adjust(thread, event->comm.comm)) {
 695                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 696                 return -1;
 697         }
 698
 699         return 0;
 700 }
 701
 702 static int process_read_event(event_t *event, struct perf_session *session __used)
 703 {
 704         struct perf_event_attr *attr;
 705
 706         attr = perf_header__find_attr(event->read.id, &session->header);
 707
 708         if (show_threads) {
 709                 const char *name = attr ? __event_name(attr->type, attr->config)
 710                                    : "unknown";
 711                 perf_read_values_add_value(&show_threads_values,
 712                                            event->read.pid, event->read.tid,
 713                                            event->read.id,
 714                                            name,
 715                                            event->read.value);
 716         }
 717
 718         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 719                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 720                     event->read.value);
 721
 722         return 0;
 723 }
 724
 725 static int sample_type_check(u64 type, struct perf_session *session)
 726 {
 727         sample_type = type;
 728
 729         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 730                 if (sort__has_parent) {
 731                         fprintf(stderr, "selected --sort parent, but no"
 732                                         " callchain data. Did you call"
 733                                         " perf record without -g?\n");
 734                         return -1;
 735                 }
 736                 if (session->use_callchain) {
 737                         fprintf(stderr, "selected -g but no callchain data."
 738                                         " Did you call perf record without"
 739                                         " -g?\n");
 740                         return -1;
 741                 }
 742         } else if (callchain_param.mode != CHAIN_NONE && !session->use_callchain) {
 743                         session->use_callchain = true;
 744                         if (register_callchain_param(&callchain_param) < 0) {
 745                                 fprintf(stderr, "Can't register callchain"
 746                                                 " params\n");
 747                                 return -1;
 748                         }
 749         }
 750
 751         return 0;
 752 }
 753
 754 static struct perf_event_ops event_ops = {
 755         .process_sample_event   = process_sample_event,
 756         .process_mmap_event     = event__process_mmap,
 757         .process_comm_event     = process_comm_event,
 758         .process_exit_event     = event__process_task,
 759         .process_fork_event     = event__process_task,
 760         .process_lost_event     = event__process_lost,
 761         .process_read_event     = process_read_event,
 762         .sample_type_check      = sample_type_check,
 763 };
 764
 765
 766 static int __cmd_report(void)
 767 {
 768         int ret;
 769         struct perf_session *session;
 770
 771         session = perf_session__new(input_name, O_RDONLY, force, &symbol_conf);
 772         if (session == NULL)
 773                 return -ENOMEM;
 774
 775         session->use_callchain = use_callchain;
 776
 777         if (show_threads)
 778                 perf_read_values_init(&show_threads_values);
 779
 780         ret = perf_session__process_events(session, &event_ops);
 781         if (ret)
 782                 goto out_delete;
 783
 784         if (dump_trace) {
 785                 event__print_totals();
 786                 goto out_delete;
 787         }
 788
 789         if (verbose > 3)
 790                 perf_session__fprintf(session, stdout);
 791
 792         if (verbose > 2)
 793                 dsos__fprintf(stdout);
 794
 795         perf_session__collapse_resort(session);
 796         perf_session__output_resort(session, event__stats.total);
 797         perf_session__fprintf_hist_entries(session, event__stats.total, stdout);
 798
 799         if (show_threads)
 800                 perf_read_values_destroy(&show_threads_values);
 801 out_delete:
 802         perf_session__delete(session);
 803         return ret;
 804 }
 805
 806 static int
 807 parse_callchain_opt(const struct option *opt __used, const char *arg,
 808                     int unset __used)
 809 {
 810         char *tok;
 811         char *endptr;
 812
 813         use_callchain = true;
 814
 815         if (!arg)
 816                 return 0;
 817
 818         tok = strtok((char *)arg, ",");
 819         if (!tok)
 820                 return -1;
 821
 822         /* get the output mode */
 823         if (!strncmp(tok, "graph", strlen(arg)))
 824                 callchain_param.mode = CHAIN_GRAPH_ABS;
 825
 826         else if (!strncmp(tok, "flat", strlen(arg)))
 827                 callchain_param.mode = CHAIN_FLAT;
 828
 829         else if (!strncmp(tok, "fractal", strlen(arg)))
 830                 callchain_param.mode = CHAIN_GRAPH_REL;
 831
 832         else if (!strncmp(tok, "none", strlen(arg))) {
 833                 callchain_param.mode = CHAIN_NONE;
 834                 use_callchain = true;
 835
 836                 return 0;
 837         }
 838
 839         else
 840                 return -1;
 841
 842         /* get the min percentage */
 843         tok = strtok(NULL, ",");
 844         if (!tok)
 845                 goto setup;
 846
 847         callchain_param.min_percent = strtod(tok, &endptr);
 848         if (tok == endptr)
 849                 return -1;
 850
 851 setup:
 852         if (register_callchain_param(&callchain_param) < 0) {
 853                 fprintf(stderr, "Can't register callchain params\n");
 854                 return -1;
 855         }
 856         return 0;
 857 }
 858
 859 //static const char * const report_usage[] = {
 860 const char * const report_usage[] = {
 861         "perf report [<options>] <command>",
 862         NULL
 863 };
 864
 865 static const struct option options[] = {
 866         OPT_STRING('i', "input", &input_name, "file",
 867                     "input file name"),
 868         OPT_BOOLEAN('v', "verbose", &verbose,
 869                     "be more verbose (show symbol address, etc)"),
 870         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 871                     "dump raw trace in ASCII"),
 872         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 873                    "file", "vmlinux pathname"),
 874         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 875         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 876                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 877         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 878                     "Show a column with the number of samples"),
 879         OPT_BOOLEAN('T', "threads", &show_threads,
 880                     "Show per-thread event counters"),
 881         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 882                    "pretty printing style key: normal raw"),
 883         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 884                    "sort by key(s): pid, comm, dso, symbol, parent"),
 885         OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
 886                     "Don't shorten the pathnames taking into account the cwd"),
 887         OPT_STRING('p', "parent", &parent_pattern, "regex",
 888                    "regex filter to identify parent, see: '--sort parent'"),
 889         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 890                     "Only display entries with parent-match"),
 891         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 892                      "Display callchains using output_type and min percent threshold. "
 893                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 894         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 895                    "only consider symbols in these dsos"),
 896         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 897                    "only consider symbols in these comms"),
 898         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 899                    "only consider these symbols"),
 900         OPT_STRING('w', "column-widths", &col_width_list_str,
 901                    "width[,width...]",
 902                    "don't try to adjust column width, use these fixed values"),
 903         OPT_STRING('t', "field-separator", &field_sep, "separator",
 904                    "separator for columns, no spaces will be added between "
 905                    "columns '.' is reserved."),
 906         OPT_END()
 907 };
 908
 909 static void setup_sorting(void)
 910 {
 911         char *tmp, *tok, *str = strdup(sort_order);
 912
 913         for (tok = strtok_r(str, ", ", &tmp);
 914                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 915                 if (sort_dimension__add(tok) < 0) {
 916                         error("Unknown --sort key: `%s'", tok);
 917                         usage_with_options(report_usage, options);
 918                 }
 919         }
 920
 921         free(str);
 922 }
 923
 924 static void setup_list(struct strlist **list, const char *list_str,
 925                        struct sort_entry *se, const char *list_name,
 926                        FILE *fp)
 927 {
 928         if (list_str) {
 929                 *list = strlist__new(true, list_str);
 930                 if (!*list) {
 931                         fprintf(stderr, "problems parsing %s list\n",
 932                                 list_name);
 933                         exit(129);
 934                 }
 935                 if (strlist__nr_entries(*list) == 1) {
 936                         fprintf(fp, "# %s: %s\n", list_name,
 937                                 strlist__entry(*list, 0)->s);
 938                         se->elide = true;
 939                 }
 940         }
 941 }
 942
 943 int cmd_report(int argc, const char **argv, const char *prefix __used)
 944 {
 945         if (symbol__init(&symbol_conf) < 0)
 946                 return -1;
 947
 948         argc = parse_options(argc, argv, options, report_usage, 0);
 949
 950         setup_sorting();
 951
 952         if (parent_pattern != default_parent_pattern) {
 953                 sort_dimension__add("parent");
 954                 sort_parent.elide = 1;
 955         } else
 956                 exclude_other = 0;
 957
 958         /*
 959          * Any (unrecognized) arguments left?
 960          */
 961         if (argc)
 962                 usage_with_options(report_usage, options);
 963
 964         setup_pager();
 965
 966         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
 967         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
 968         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
 969
 970         if (field_sep && *field_sep == '.') {
 971                 fputs("'.' is the only non valid --field-separator argument\n",
 972                       stderr);
 973                 exit(129);
 974         }
 975
 976         return __cmd_report();
 977 }