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
  42 static int              show_nr_samples;
  43
  44 static int              show_threads;
  45 static struct perf_read_values  show_threads_values;
  46
  47 static char             default_pretty_printing_style[] = "normal";
  48 static char             *pretty_printing_style = default_pretty_printing_style;
  49
  50 static int              exclude_other = 1;
  51
  52 static char             callchain_default_opt[] = "fractal,0.5";
  53
  54 static u64              sample_type;
  55
  56 struct symbol_conf      symbol_conf;
  57
  58
  59 static size_t
  60 callchain__fprintf_left_margin(FILE *fp, int left_margin)
  61 {
  62         int i;
  63         int ret;
  64
  65         ret = fprintf(fp, "            ");
  66
  67         for (i = 0; i < left_margin; i++)
  68                 ret += fprintf(fp, " ");
  69
  70         return ret;
  71 }
  72
  73 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
  74                                           int left_margin)
  75 {
  76         int i;
  77         size_t ret = 0;
  78
  79         ret += callchain__fprintf_left_margin(fp, left_margin);
  80
  81         for (i = 0; i < depth; i++)
  82                 if (depth_mask & (1 << i))
  83                         ret += fprintf(fp, "|          ");
  84                 else
  85                         ret += fprintf(fp, "           ");
  86
  87         ret += fprintf(fp, "\n");
  88
  89         return ret;
  90 }
  91 static size_t
  92 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
  93                        int depth_mask, int count, u64 total_samples,
  94                        int hits, int left_margin)
  95 {
  96         int i;
  97         size_t ret = 0;
  98
  99         ret += callchain__fprintf_left_margin(fp, left_margin);
 100         for (i = 0; i < depth; i++) {
 101                 if (depth_mask & (1 << i))
 102                         ret += fprintf(fp, "|");
 103                 else
 104                         ret += fprintf(fp, " ");
 105                 if (!count && i == depth - 1) {
 106                         double percent;
 107
 108                         percent = hits * 100.0 / total_samples;
 109                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 110                 } else
 111                         ret += fprintf(fp, "%s", "          ");
 112         }
 113         if (chain->sym)
 114                 ret += fprintf(fp, "%s\n", chain->sym->name);
 115         else
 116                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 117
 118         return ret;
 119 }
 120
 121 static struct symbol *rem_sq_bracket;
 122 static struct callchain_list rem_hits;
 123
 124 static void init_rem_hits(void)
 125 {
 126         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 127         if (!rem_sq_bracket) {
 128                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 129                 return;
 130         }
 131
 132         strcpy(rem_sq_bracket->name, "[...]");
 133         rem_hits.sym = rem_sq_bracket;
 134 }
 135
 136 static size_t
 137 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 138                            u64 total_samples, int depth, int depth_mask,
 139                            int left_margin)
 140 {
 141         struct rb_node *node, *next;
 142         struct callchain_node *child;
 143         struct callchain_list *chain;
 144         int new_depth_mask = depth_mask;
 145         u64 new_total;
 146         u64 remaining;
 147         size_t ret = 0;
 148         int i;
 149
 150         if (callchain_param.mode == CHAIN_GRAPH_REL)
 151                 new_total = self->children_hit;
 152         else
 153                 new_total = total_samples;
 154
 155         remaining = new_total;
 156
 157         node = rb_first(&self->rb_root);
 158         while (node) {
 159                 u64 cumul;
 160
 161                 child = rb_entry(node, struct callchain_node, rb_node);
 162                 cumul = cumul_hits(child);
 163                 remaining -= cumul;
 164
 165                 /*
 166                  * The depth mask manages the output of pipes that show
 167                  * the depth. We don't want to keep the pipes of the current
 168                  * level for the last child of this depth.
 169                  * Except if we have remaining filtered hits. They will
 170                  * supersede the last child
 171                  */
 172                 next = rb_next(node);
 173                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 174                         new_depth_mask &= ~(1 << (depth - 1));
 175
 176                 /*
 177                  * But we keep the older depth mask for the line seperator
 178                  * to keep the level link until we reach the last child
 179                  */
 180                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 181                                                    left_margin);
 182                 i = 0;
 183                 list_for_each_entry(chain, &child->val, list) {
 184                         if (chain->ip >= PERF_CONTEXT_MAX)
 185                                 continue;
 186                         ret += ipchain__fprintf_graph(fp, chain, depth,
 187                                                       new_depth_mask, i++,
 188                                                       new_total,
 189                                                       cumul,
 190                                                       left_margin);
 191                 }
 192                 ret += __callchain__fprintf_graph(fp, child, new_total,
 193                                                   depth + 1,
 194                                                   new_depth_mask | (1 << depth),
 195                                                   left_margin);
 196                 node = next;
 197         }
 198
 199         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 200                 remaining && remaining != new_total) {
 201
 202                 if (!rem_sq_bracket)
 203                         return ret;
 204
 205                 new_depth_mask &= ~(1 << (depth - 1));
 206
 207                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 208                                               new_depth_mask, 0, new_total,
 209                                               remaining, left_margin);
 210         }
 211
 212         return ret;
 213 }
 214
 215
 216 static size_t
 217 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 218                          u64 total_samples, int left_margin)
 219 {
 220         struct callchain_list *chain;
 221         bool printed = false;
 222         int i = 0;
 223         int ret = 0;
 224
 225         list_for_each_entry(chain, &self->val, list) {
 226                 if (chain->ip >= PERF_CONTEXT_MAX)
 227                         continue;
 228
 229                 if (!i++ && sort__first_dimension == SORT_SYM)
 230                         continue;
 231
 232                 if (!printed) {
 233                         ret += callchain__fprintf_left_margin(fp, left_margin);
 234                         ret += fprintf(fp, "|\n");
 235                         ret += callchain__fprintf_left_margin(fp, left_margin);
 236                         ret += fprintf(fp, "---");
 237
 238                         left_margin += 3;
 239                         printed = true;
 240                 } else
 241                         ret += callchain__fprintf_left_margin(fp, left_margin);
 242
 243                 if (chain->sym)
 244                         ret += fprintf(fp, " %s\n", chain->sym->name);
 245                 else
 246                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 247         }
 248
 249         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 250
 251         return ret;
 252 }
 253
 254 static size_t
 255 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 256                         u64 total_samples)
 257 {
 258         struct callchain_list *chain;
 259         size_t ret = 0;
 260
 261         if (!self)
 262                 return 0;
 263
 264         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 265
 266
 267         list_for_each_entry(chain, &self->val, list) {
 268                 if (chain->ip >= PERF_CONTEXT_MAX)
 269                         continue;
 270                 if (chain->sym)
 271                         ret += fprintf(fp, "                %s\n", chain->sym->name);
 272                 else
 273                         ret += fprintf(fp, "                %p\n",
 274                                         (void *)(long)chain->ip);
 275         }
 276
 277         return ret;
 278 }
 279
 280 static size_t
 281 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 282                               u64 total_samples, int left_margin)
 283 {
 284         struct rb_node *rb_node;
 285         struct callchain_node *chain;
 286         size_t ret = 0;
 287
 288         rb_node = rb_first(&self->sorted_chain);
 289         while (rb_node) {
 290                 double percent;
 291
 292                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 293                 percent = chain->hit * 100.0 / total_samples;
 294                 switch (callchain_param.mode) {
 295                 case CHAIN_FLAT:
 296                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 297                                                      percent);
 298                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 299                         break;
 300                 case CHAIN_GRAPH_ABS: /* Falldown */
 301                 case CHAIN_GRAPH_REL:
 302                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 303                                                         left_margin);
 304                 case CHAIN_NONE:
 305                 default:
 306                         break;
 307                 }
 308                 ret += fprintf(fp, "\n");
 309                 rb_node = rb_next(rb_node);
 310         }
 311
 312         return ret;
 313 }
 314
 315 static size_t
 316 hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
 317 {
 318         struct sort_entry *se;
 319         size_t ret;
 320
 321         if (exclude_other && !self->parent)
 322                 return 0;
 323
 324         if (total_samples)
 325                 ret = percent_color_fprintf(fp,
 326                                             field_sep ? "%.2f" : "   %6.2f%%",
 327                                         (self->count * 100.0) / total_samples);
 328         else
 329                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
 330
 331         if (show_nr_samples) {
 332                 if (field_sep)
 333                         fprintf(fp, "%c%lld", *field_sep, self->count);
 334                 else
 335                         fprintf(fp, "%11lld", self->count);
 336         }
 337
 338         list_for_each_entry(se, &hist_entry__sort_list, list) {
 339                 if (se->elide)
 340                         continue;
 341
 342                 fprintf(fp, "%s", field_sep ?: "  ");
 343                 ret += se->print(fp, self, se->width ? *se->width : 0);
 344         }
 345
 346         ret += fprintf(fp, "\n");
 347
 348         if (callchain) {
 349                 int left_margin = 0;
 350
 351                 if (sort__first_dimension == SORT_COMM) {
 352                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
 353                                                 list);
 354                         left_margin = se->width ? *se->width : 0;
 355                         left_margin -= thread__comm_len(self->thread);
 356                 }
 357
 358                 hist_entry_callchain__fprintf(fp, self, total_samples,
 359                                               left_margin);
 360         }
 361
 362         return ret;
 363 }
 364
 365 /*
 366  *
 367  */
 368
 369 static void dso__calc_col_width(struct dso *self)
 370 {
 371         if (!col_width_list_str && !field_sep &&
 372             (!dso_list || strlist__has_entry(dso_list, self->name))) {
 373                 unsigned int slen = strlen(self->name);
 374                 if (slen > dsos__col_width)
 375                         dsos__col_width = slen;
 376         }
 377
 378         self->slen_calculated = 1;
 379 }
 380
 381 static void thread__comm_adjust(struct thread *self)
 382 {
 383         char *comm = self->comm;
 384
 385         if (!col_width_list_str && !field_sep &&
 386             (!comm_list || strlist__has_entry(comm_list, comm))) {
 387                 unsigned int slen = strlen(comm);
 388
 389                 if (slen > comms__col_width) {
 390                         comms__col_width = slen;
 391                         threads__col_width = slen + 6;
 392                 }
 393         }
 394 }
 395
 396 static int thread__set_comm_adjust(struct thread *self, const char *comm)
 397 {
 398         int ret = thread__set_comm(self, comm);
 399
 400         if (ret)
 401                 return ret;
 402
 403         thread__comm_adjust(self);
 404
 405         return 0;
 406 }
 407
 408 static int call__match(struct symbol *sym)
 409 {
 410         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
 411                 return 1;
 412
 413         return 0;
 414 }
 415
 416 static struct symbol **resolve_callchain(struct thread *thread,
 417                                          struct ip_callchain *chain,
 418                                          struct symbol **parent)
 419 {
 420         u8 cpumode = PERF_RECORD_MISC_USER;
 421         struct symbol **syms = NULL;
 422         unsigned int i;
 423
 424         if (callchain) {
 425                 syms = calloc(chain->nr, sizeof(*syms));
 426                 if (!syms) {
 427                         fprintf(stderr, "Can't allocate memory for symbols\n");
 428                         exit(-1);
 429                 }
 430         }
 431
 432         for (i = 0; i < chain->nr; i++) {
 433                 u64 ip = chain->ips[i];
 434                 struct addr_location al;
 435
 436                 if (ip >= PERF_CONTEXT_MAX) {
 437                         switch (ip) {
 438                         case PERF_CONTEXT_HV:
 439                                 cpumode = PERF_RECORD_MISC_HYPERVISOR;  break;
 440                         case PERF_CONTEXT_KERNEL:
 441                                 cpumode = PERF_RECORD_MISC_KERNEL;      break;
 442                         case PERF_CONTEXT_USER:
 443                                 cpumode = PERF_RECORD_MISC_USER;        break;
 444                         default:
 445                                 break;
 446                         }
 447                         continue;
 448                 }
 449
 450                 thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
 451                                            ip, &al, NULL);
 452                 if (al.sym != NULL) {
 453                         if (sort__has_parent && !*parent &&
 454                             call__match(al.sym))
 455                                 *parent = al.sym;
 456                         if (!callchain)
 457                                 break;
 458                         syms[i] = al.sym;
 459                 }
 460         }
 461
 462         return syms;
 463 }
 464
 465 /*
 466  * collect histogram counts
 467  */
 468
 469 static int hist_entry__add(struct addr_location *al,
 470                            struct ip_callchain *chain, u64 count)
 471 {
 472         struct symbol **syms = NULL, *parent = NULL;
 473         bool hit;
 474         struct hist_entry *he;
 475
 476         if ((sort__has_parent || callchain) && chain)
 477                 syms = resolve_callchain(al->thread, chain, &parent);
 478
 479         he = __hist_entry__add(al, parent, count, &hit);
 480         if (he == NULL)
 481                 return -ENOMEM;
 482
 483         if (hit)
 484                 he->count += count;
 485
 486         if (callchain) {
 487                 if (!hit)
 488                         callchain_init(&he->callchain);
 489                 append_chain(&he->callchain, chain, syms);
 490                 free(syms);
 491         }
 492
 493         return 0;
 494 }
 495
 496 static size_t output__fprintf(FILE *fp, u64 total_samples)
 497 {
 498         struct hist_entry *pos;
 499         struct sort_entry *se;
 500         struct rb_node *nd;
 501         size_t ret = 0;
 502         unsigned int width;
 503         char *col_width = col_width_list_str;
 504         int raw_printing_style;
 505
 506         raw_printing_style = !strcmp(pretty_printing_style, "raw");
 507
 508         init_rem_hits();
 509
 510         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
 511         fprintf(fp, "#\n");
 512
 513         fprintf(fp, "# Overhead");
 514         if (show_nr_samples) {
 515                 if (field_sep)
 516                         fprintf(fp, "%cSamples", *field_sep);
 517                 else
 518                         fputs("  Samples  ", fp);
 519         }
 520         list_for_each_entry(se, &hist_entry__sort_list, list) {
 521                 if (se->elide)
 522                         continue;
 523                 if (field_sep) {
 524                         fprintf(fp, "%c%s", *field_sep, se->header);
 525                         continue;
 526                 }
 527                 width = strlen(se->header);
 528                 if (se->width) {
 529                         if (col_width_list_str) {
 530                                 if (col_width) {
 531                                         *se->width = atoi(col_width);
 532                                         col_width = strchr(col_width, ',');
 533                                         if (col_width)
 534                                                 ++col_width;
 535                                 }
 536                         }
 537                         width = *se->width = max(*se->width, width);
 538                 }
 539                 fprintf(fp, "  %*s", width, se->header);
 540         }
 541         fprintf(fp, "\n");
 542
 543         if (field_sep)
 544                 goto print_entries;
 545
 546         fprintf(fp, "# ........");
 547         if (show_nr_samples)
 548                 fprintf(fp, " ..........");
 549         list_for_each_entry(se, &hist_entry__sort_list, list) {
 550                 unsigned int i;
 551
 552                 if (se->elide)
 553                         continue;
 554
 555                 fprintf(fp, "  ");
 556                 if (se->width)
 557                         width = *se->width;
 558                 else
 559                         width = strlen(se->header);
 560                 for (i = 0; i < width; i++)
 561                         fprintf(fp, ".");
 562         }
 563         fprintf(fp, "\n");
 564
 565         fprintf(fp, "#\n");
 566
 567 print_entries:
 568         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 569                 pos = rb_entry(nd, struct hist_entry, rb_node);
 570                 ret += hist_entry__fprintf(fp, pos, total_samples);
 571         }
 572
 573         if (sort_order == default_sort_order &&
 574                         parent_pattern == default_parent_pattern) {
 575                 fprintf(fp, "#\n");
 576                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
 577                 fprintf(fp, "#\n");
 578         }
 579         fprintf(fp, "\n");
 580
 581         free(rem_sq_bracket);
 582
 583         if (show_threads)
 584                 perf_read_values_display(fp, &show_threads_values,
 585                                          raw_printing_style);
 586
 587         return ret;
 588 }
 589
 590 static int validate_chain(struct ip_callchain *chain, event_t *event)
 591 {
 592         unsigned int chain_size;
 593
 594         chain_size = event->header.size;
 595         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
 596
 597         if (chain->nr*sizeof(u64) > chain_size)
 598                 return -1;
 599
 600         return 0;
 601 }
 602
 603 static int process_sample_event(event_t *event, struct perf_session *session)
 604 {
 605         struct sample_data data;
 606         int cpumode;
 607         struct addr_location al;
 608         struct thread *thread;
 609
 610         memset(&data, 0, sizeof(data));
 611         data.period = 1;
 612
 613         event__parse_sample(event, sample_type, &data);
 614
 615         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
 616                 event->header.misc,
 617                 data.pid, data.tid,
 618                 (void *)(long)data.ip,
 619                 (long long)data.period);
 620
 621         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 622                 unsigned int i;
 623
 624                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 625
 626                 if (validate_chain(data.callchain, event) < 0) {
 627                         pr_debug("call-chain problem with event, "
 628                                  "skipping it.\n");
 629                         return 0;
 630                 }
 631
 632                 if (dump_trace) {
 633                         for (i = 0; i < data.callchain->nr; i++)
 634                                 dump_printf("..... %2d: %016Lx\n",
 635                                             i, data.callchain->ips[i]);
 636                 }
 637         }
 638
 639         thread = perf_session__findnew(session, data.pid);
 640         if (thread == NULL) {
 641                 pr_debug("problem processing %d event, skipping it.\n",
 642                         event->header.type);
 643                 return -1;
 644         }
 645
 646         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 647
 648         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
 649                 return 0;
 650
 651         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 652
 653         thread__find_addr_location(thread, cpumode,
 654                                    MAP__FUNCTION, data.ip, &al, NULL);
 655         /*
 656          * We have to do this here as we may have a dso with no symbol hit that
 657          * has a name longer than the ones with symbols sampled.
 658          */
 659         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
 660                 dso__calc_col_width(al.map->dso);
 661
 662         if (dso_list &&
 663             (!al.map || !al.map->dso ||
 664              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
 665                (al.map->dso->short_name != al.map->dso->long_name &&
 666                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
 667                 return 0;
 668
 669         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
 670                 return 0;
 671
 672         if (hist_entry__add(&al, data.callchain, data.period)) {
 673                 pr_debug("problem incrementing symbol count, skipping event\n");
 674                 return -1;
 675         }
 676
 677         event__stats.total += data.period;
 678
 679         return 0;
 680 }
 681
 682 static int process_comm_event(event_t *event, struct perf_session *session)
 683 {
 684         struct thread *thread = perf_session__findnew(session, event->comm.pid);
 685
 686         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
 687
 688         if (thread == NULL ||
 689             thread__set_comm_adjust(thread, event->comm.comm)) {
 690                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
 691                 return -1;
 692         }
 693
 694         return 0;
 695 }
 696
 697 static int process_read_event(event_t *event, struct perf_session *session __used)
 698 {
 699         struct perf_event_attr *attr;
 700
 701         attr = perf_header__find_attr(event->read.id, &session->header);
 702
 703         if (show_threads) {
 704                 const char *name = attr ? __event_name(attr->type, attr->config)
 705                                    : "unknown";
 706                 perf_read_values_add_value(&show_threads_values,
 707                                            event->read.pid, event->read.tid,
 708                                            event->read.id,
 709                                            name,
 710                                            event->read.value);
 711         }
 712
 713         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 714                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 715                     event->read.value);
 716
 717         return 0;
 718 }
 719
 720 static int sample_type_check(u64 type)
 721 {
 722         sample_type = type;
 723
 724         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 725                 if (sort__has_parent) {
 726                         fprintf(stderr, "selected --sort parent, but no"
 727                                         " callchain data. Did you call"
 728                                         " perf record without -g?\n");
 729                         return -1;
 730                 }
 731                 if (callchain) {
 732                         fprintf(stderr, "selected -g but no callchain data."
 733                                         " Did you call perf record without"
 734                                         " -g?\n");
 735                         return -1;
 736                 }
 737         } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
 738                         callchain = 1;
 739                         if (register_callchain_param(&callchain_param) < 0) {
 740                                 fprintf(stderr, "Can't register callchain"
 741                                                 " params\n");
 742                                 return -1;
 743                         }
 744         }
 745
 746         return 0;
 747 }
 748
 749 static struct perf_event_ops event_ops = {
 750         .process_sample_event   = process_sample_event,
 751         .process_mmap_event     = event__process_mmap,
 752         .process_comm_event     = process_comm_event,
 753         .process_exit_event     = event__process_task,
 754         .process_fork_event     = event__process_task,
 755         .process_lost_event     = event__process_lost,
 756         .process_read_event     = process_read_event,
 757         .sample_type_check      = sample_type_check,
 758 };
 759
 760
 761 static int __cmd_report(void)
 762 {
 763         int ret;
 764         struct perf_session *session;
 765
 766         session = perf_session__new(input_name, O_RDONLY, force);
 767         if (session == NULL)
 768                 return -ENOMEM;
 769
 770         if (show_threads)
 771                 perf_read_values_init(&show_threads_values);
 772
 773         ret = perf_session__process_events(session, &event_ops);
 774         if (ret)
 775                 goto out_delete;
 776
 777         if (dump_trace) {
 778                 event__print_totals();
 779                 goto out_delete;
 780         }
 781
 782         if (verbose > 3)
 783                 perf_session__fprintf(session, stdout);
 784
 785         if (verbose > 2)
 786                 dsos__fprintf(stdout);
 787
 788         collapse__resort();
 789         output__resort(event__stats.total);
 790         output__fprintf(stdout, event__stats.total);
 791
 792         if (show_threads)
 793                 perf_read_values_destroy(&show_threads_values);
 794 out_delete:
 795         perf_session__delete(session);
 796         return ret;
 797 }
 798
 799 static int
 800 parse_callchain_opt(const struct option *opt __used, const char *arg,
 801                     int unset __used)
 802 {
 803         char *tok;
 804         char *endptr;
 805
 806         callchain = 1;
 807
 808         if (!arg)
 809                 return 0;
 810
 811         tok = strtok((char *)arg, ",");
 812         if (!tok)
 813                 return -1;
 814
 815         /* get the output mode */
 816         if (!strncmp(tok, "graph", strlen(arg)))
 817                 callchain_param.mode = CHAIN_GRAPH_ABS;
 818
 819         else if (!strncmp(tok, "flat", strlen(arg)))
 820                 callchain_param.mode = CHAIN_FLAT;
 821
 822         else if (!strncmp(tok, "fractal", strlen(arg)))
 823                 callchain_param.mode = CHAIN_GRAPH_REL;
 824
 825         else if (!strncmp(tok, "none", strlen(arg))) {
 826                 callchain_param.mode = CHAIN_NONE;
 827                 callchain = 0;
 828
 829                 return 0;
 830         }
 831
 832         else
 833                 return -1;
 834
 835         /* get the min percentage */
 836         tok = strtok(NULL, ",");
 837         if (!tok)
 838                 goto setup;
 839
 840         callchain_param.min_percent = strtod(tok, &endptr);
 841         if (tok == endptr)
 842                 return -1;
 843
 844 setup:
 845         if (register_callchain_param(&callchain_param) < 0) {
 846                 fprintf(stderr, "Can't register callchain params\n");
 847                 return -1;
 848         }
 849         return 0;
 850 }
 851
 852 //static const char * const report_usage[] = {
 853 const char * const report_usage[] = {
 854         "perf report [<options>] <command>",
 855         NULL
 856 };
 857
 858 static const struct option options[] = {
 859         OPT_STRING('i', "input", &input_name, "file",
 860                     "input file name"),
 861         OPT_BOOLEAN('v', "verbose", &verbose,
 862                     "be more verbose (show symbol address, etc)"),
 863         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 864                     "dump raw trace in ASCII"),
 865         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 866                    "file", "vmlinux pathname"),
 867         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 868         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 869                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 870         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
 871                     "Show a column with the number of samples"),
 872         OPT_BOOLEAN('T', "threads", &show_threads,
 873                     "Show per-thread event counters"),
 874         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 875                    "pretty printing style key: normal raw"),
 876         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 877                    "sort by key(s): pid, comm, dso, symbol, parent"),
 878         OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
 879                     "Don't shorten the pathnames taking into account the cwd"),
 880         OPT_STRING('p', "parent", &parent_pattern, "regex",
 881                    "regex filter to identify parent, see: '--sort parent'"),
 882         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
 883                     "Only display entries with parent-match"),
 884         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 885                      "Display callchains using output_type and min percent threshold. "
 886                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 887         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
 888                    "only consider symbols in these dsos"),
 889         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
 890                    "only consider symbols in these comms"),
 891         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
 892                    "only consider these symbols"),
 893         OPT_STRING('w', "column-widths", &col_width_list_str,
 894                    "width[,width...]",
 895                    "don't try to adjust column width, use these fixed values"),
 896         OPT_STRING('t', "field-separator", &field_sep, "separator",
 897                    "separator for columns, no spaces will be added between "
 898                    "columns '.' is reserved."),
 899         OPT_END()
 900 };
 901
 902 static void setup_sorting(void)
 903 {
 904         char *tmp, *tok, *str = strdup(sort_order);
 905
 906         for (tok = strtok_r(str, ", ", &tmp);
 907                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 908                 if (sort_dimension__add(tok) < 0) {
 909                         error("Unknown --sort key: `%s'", tok);
 910                         usage_with_options(report_usage, options);
 911                 }
 912         }
 913
 914         free(str);
 915 }
 916
 917 static void setup_list(struct strlist **list, const char *list_str,
 918                        struct sort_entry *se, const char *list_name,
 919                        FILE *fp)
 920 {
 921         if (list_str) {
 922                 *list = strlist__new(true, list_str);
 923                 if (!*list) {
 924                         fprintf(stderr, "problems parsing %s list\n",
 925                                 list_name);
 926                         exit(129);
 927                 }
 928                 if (strlist__nr_entries(*list) == 1) {
 929                         fprintf(fp, "# %s: %s\n", list_name,
 930                                 strlist__entry(*list, 0)->s);
 931                         se->elide = true;
 932                 }
 933         }
 934 }
 935
 936 int cmd_report(int argc, const char **argv, const char *prefix __used)
 937 {
 938         if (symbol__init(&symbol_conf) < 0)
 939                 return -1;
 940
 941         argc = parse_options(argc, argv, options, report_usage, 0);
 942
 943         setup_sorting();
 944
 945         if (parent_pattern != default_parent_pattern) {
 946                 sort_dimension__add("parent");
 947                 sort_parent.elide = 1;
 948         } else
 949                 exclude_other = 0;
 950
 951         /*
 952          * Any (unrecognized) arguments left?
 953          */
 954         if (argc)
 955                 usage_with_options(report_usage, options);
 956
 957         setup_pager();
 958
 959         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
 960         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
 961         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
 962
 963         if (field_sep && *field_sep == '.') {
 964                 fputs("'.' is the only non valid --field-separator argument\n",
 965                       stderr);
 966                 exit(129);
 967         }
 968
 969         return __cmd_report();
 970 }