Documentation/perf_counter/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/list.h"
  13 #include "util/cache.h"
  14 #include "util/rbtree.h"
  15 #include "util/symbol.h"
  16 #include "util/string.h"
  17
  18 #include "perf.h"
  19
  20 #include "util/parse-options.h"
  21 #include "util/parse-events.h"
  22
  23 #define SHOW_KERNEL     1
  24 #define SHOW_USER       2
  25 #define SHOW_HV         4
  26
  27 static char             const *input_name = "perf.data";
  28 static char             *vmlinux = NULL;
  29 static char             *sort_order = "comm,dso";
  30 static int              input;
  31 static int              show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
  32
  33 static int              dump_trace = 0;
  34 #define dprintf(x...)   do { if (dump_trace) printf(x); } while (0)
  35
  36 static int              verbose;
  37 static int              full_paths;
  38
  39 static unsigned long    page_size;
  40 static unsigned long    mmap_window = 32;
  41
  42 const char *perf_event_names[] = {
  43         [PERF_EVENT_MMAP]   = " PERF_EVENT_MMAP",
  44         [PERF_EVENT_MUNMAP] = " PERF_EVENT_MUNMAP",
  45         [PERF_EVENT_COMM]   = " PERF_EVENT_COMM",
  46 };
  47
  48 struct ip_event {
  49         struct perf_event_header header;
  50         __u64 ip;
  51         __u32 pid, tid;
  52 };
  53 struct mmap_event {
  54         struct perf_event_header header;
  55         __u32 pid, tid;
  56         __u64 start;
  57         __u64 len;
  58         __u64 pgoff;
  59         char filename[PATH_MAX];
  60 };
  61 struct comm_event {
  62         struct perf_event_header header;
  63         __u32 pid,tid;
  64         char comm[16];
  65 };
  66
  67 typedef union event_union {
  68         struct perf_event_header header;
  69         struct ip_event ip;
  70         struct mmap_event mmap;
  71         struct comm_event comm;
  72 } event_t;
  73
  74 static LIST_HEAD(dsos);
  75 static struct dso *kernel_dso;
  76
  77 static void dsos__add(struct dso *dso)
  78 {
  79         list_add_tail(&dso->node, &dsos);
  80 }
  81
  82 static struct dso *dsos__find(const char *name)
  83 {
  84         struct dso *pos;
  85
  86         list_for_each_entry(pos, &dsos, node)
  87                 if (strcmp(pos->name, name) == 0)
  88                         return pos;
  89         return NULL;
  90 }
  91
  92 static struct dso *dsos__findnew(const char *name)
  93 {
  94         struct dso *dso = dsos__find(name);
  95         int nr;
  96
  97         if (dso)
  98                 return dso;
  99
 100         dso = dso__new(name, 0);
 101         if (!dso)
 102                 goto out_delete_dso;
 103
 104         nr = dso__load(dso, NULL);
 105         if (nr < 0) {
 106                 fprintf(stderr, "Failed to open: %s\n", name);
 107                 goto out_delete_dso;
 108         }
 109         if (!nr && verbose) {
 110                 fprintf(stderr,
 111                 "No symbols found in: %s, maybe install a debug package?\n",
 112                                 name);
 113         }
 114
 115         dsos__add(dso);
 116
 117         return dso;
 118
 119 out_delete_dso:
 120         dso__delete(dso);
 121         return NULL;
 122 }
 123
 124 static void dsos__fprintf(FILE *fp)
 125 {
 126         struct dso *pos;
 127
 128         list_for_each_entry(pos, &dsos, node)
 129                 dso__fprintf(pos, fp);
 130 }
 131
 132 static int load_kernel(void)
 133 {
 134         int err;
 135
 136         kernel_dso = dso__new("[kernel]", 0);
 137         if (!kernel_dso)
 138                 return -1;
 139
 140         err = dso__load_kernel(kernel_dso, vmlinux, NULL);
 141         if (err) {
 142                 dso__delete(kernel_dso);
 143                 kernel_dso = NULL;
 144         } else
 145                 dsos__add(kernel_dso);
 146
 147         return err;
 148 }
 149
 150 static int strcommon(const char *pathname, const char *cwd, int cwdlen)
 151 {
 152         int n = 0;
 153
 154         while (pathname[n] == cwd[n] && n < cwdlen)
 155                 ++n;
 156
 157         return n;
 158 }
 159
 160 struct map {
 161         struct list_head node;
 162         uint64_t         start;
 163         uint64_t         end;
 164         uint64_t         pgoff;
 165         struct dso       *dso;
 166 };
 167
 168 static struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
 169 {
 170         struct map *self = malloc(sizeof(*self));
 171
 172         if (self != NULL) {
 173                 const char *filename = event->filename;
 174                 char newfilename[PATH_MAX];
 175
 176                 if (cwd) {
 177                         int n = strcommon(filename, cwd, cwdlen);
 178                         if (n == cwdlen) {
 179                                 snprintf(newfilename, sizeof(newfilename),
 180                                          ".%s", filename + n);
 181                                 filename = newfilename;
 182                         }
 183                 }
 184
 185                 self->start = event->start;
 186                 self->end   = event->start + event->len;
 187                 self->pgoff = event->pgoff;
 188
 189                 self->dso = dsos__findnew(filename);
 190                 if (self->dso == NULL)
 191                         goto out_delete;
 192         }
 193         return self;
 194 out_delete:
 195         free(self);
 196         return NULL;
 197 }
 198
 199 struct thread;
 200
 201 struct thread {
 202         struct rb_node   rb_node;
 203         struct list_head maps;
 204         pid_t            pid;
 205         char             *comm;
 206 };
 207
 208 static struct thread *thread__new(pid_t pid)
 209 {
 210         struct thread *self = malloc(sizeof(*self));
 211
 212         if (self != NULL) {
 213                 self->pid = pid;
 214                 self->comm = malloc(32);
 215                 if (self->comm)
 216                         snprintf(self->comm, 32, ":%d", self->pid);
 217                 INIT_LIST_HEAD(&self->maps);
 218         }
 219
 220         return self;
 221 }
 222
 223 static int thread__set_comm(struct thread *self, const char *comm)
 224 {
 225         if (self->comm)
 226                 free(self->comm);
 227         self->comm = strdup(comm);
 228         return self->comm ? 0 : -ENOMEM;
 229 }
 230
 231 static struct rb_root threads;
 232 static struct thread *last_match;
 233
 234 static struct thread *threads__findnew(pid_t pid)
 235 {
 236         struct rb_node **p = &threads.rb_node;
 237         struct rb_node *parent = NULL;
 238         struct thread *th;
 239
 240         /*
 241          * Font-end cache - PID lookups come in blocks,
 242          * so most of the time we dont have to look up
 243          * the full rbtree:
 244          */
 245         if (last_match && last_match->pid == pid)
 246                 return last_match;
 247
 248         while (*p != NULL) {
 249                 parent = *p;
 250                 th = rb_entry(parent, struct thread, rb_node);
 251
 252                 if (th->pid == pid) {
 253                         last_match = th;
 254                         return th;
 255                 }
 256
 257                 if (pid < th->pid)
 258                         p = &(*p)->rb_left;
 259                 else
 260                         p = &(*p)->rb_right;
 261         }
 262
 263         th = thread__new(pid);
 264         if (th != NULL) {
 265                 rb_link_node(&th->rb_node, parent, p);
 266                 rb_insert_color(&th->rb_node, &threads);
 267                 last_match = th;
 268         }
 269
 270         return th;
 271 }
 272
 273 static void thread__insert_map(struct thread *self, struct map *map)
 274 {
 275         list_add_tail(&map->node, &self->maps);
 276 }
 277
 278 static struct map *thread__find_map(struct thread *self, uint64_t ip)
 279 {
 280         struct map *pos;
 281
 282         if (self == NULL)
 283                 return NULL;
 284
 285         list_for_each_entry(pos, &self->maps, node)
 286                 if (ip >= pos->start && ip <= pos->end)
 287                         return pos;
 288
 289         return NULL;
 290 }
 291
 292 /*
 293  * histogram, sorted on item, collects counts
 294  */
 295
 296 static struct rb_root hist;
 297
 298 struct hist_entry {
 299         struct rb_node   rb_node;
 300
 301         struct thread    *thread;
 302         struct map       *map;
 303         struct dso       *dso;
 304         struct symbol    *sym;
 305         uint64_t         ip;
 306         char             level;
 307
 308         uint32_t         count;
 309 };
 310
 311 /*
 312  * configurable sorting bits
 313  */
 314
 315 struct sort_entry {
 316         struct list_head list;
 317
 318         char *header;
 319
 320         int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
 321         int64_t (*collapse)(struct hist_entry *, struct hist_entry *);
 322         size_t  (*print)(FILE *fp, struct hist_entry *);
 323 };
 324
 325 /* --sort pid */
 326
 327 static int64_t
 328 sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
 329 {
 330         return right->thread->pid - left->thread->pid;
 331 }
 332
 333 static size_t
 334 sort__thread_print(FILE *fp, struct hist_entry *self)
 335 {
 336         return fprintf(fp, " %16s:%5d", self->thread->comm ?: "", self->thread->pid);
 337 }
 338
 339 static struct sort_entry sort_thread = {
 340         .header = "         Command: Pid ",
 341         .cmp    = sort__thread_cmp,
 342         .print  = sort__thread_print,
 343 };
 344
 345 /* --sort comm */
 346
 347 static int64_t
 348 sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
 349 {
 350         return right->thread->pid - left->thread->pid;
 351 }
 352
 353 static int64_t
 354 sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
 355 {
 356         char *comm_l = left->thread->comm;
 357         char *comm_r = right->thread->comm;
 358
 359         if (!comm_l || !comm_r) {
 360                 if (!comm_l && !comm_r)
 361                         return 0;
 362                 else if (!comm_l)
 363                         return -1;
 364                 else
 365                         return 1;
 366         }
 367
 368         return strcmp(comm_l, comm_r);
 369 }
 370
 371 static size_t
 372 sort__comm_print(FILE *fp, struct hist_entry *self)
 373 {
 374         return fprintf(fp, "  %16s", self->thread->comm);
 375 }
 376
 377 static struct sort_entry sort_comm = {
 378         .header         = "          Command",
 379         .cmp            = sort__comm_cmp,
 380         .collapse       = sort__comm_collapse,
 381         .print          = sort__comm_print,
 382 };
 383
 384 /* --sort dso */
 385
 386 static int64_t
 387 sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
 388 {
 389         struct dso *dso_l = left->dso;
 390         struct dso *dso_r = right->dso;
 391
 392         if (!dso_l || !dso_r) {
 393                 if (!dso_l && !dso_r)
 394                         return 0;
 395                 else if (!dso_l)
 396                         return -1;
 397                 else
 398                         return 1;
 399         }
 400
 401         return strcmp(dso_l->name, dso_r->name);
 402 }
 403
 404 static size_t
 405 sort__dso_print(FILE *fp, struct hist_entry *self)
 406 {
 407         if (self->dso)
 408                 return fprintf(fp, "  %-25s", self->dso->name);
 409
 410         return fprintf(fp, "  %016llx", (__u64)self->ip);
 411 }
 412
 413 static struct sort_entry sort_dso = {
 414         .header = " Shared Object          ",
 415         .cmp    = sort__dso_cmp,
 416         .print  = sort__dso_print,
 417 };
 418
 419 /* --sort symbol */
 420
 421 static int64_t
 422 sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
 423 {
 424         uint64_t ip_l, ip_r;
 425
 426         if (left->sym == right->sym)
 427                 return 0;
 428
 429         ip_l = left->sym ? left->sym->start : left->ip;
 430         ip_r = right->sym ? right->sym->start : right->ip;
 431
 432         return (int64_t)(ip_r - ip_l);
 433 }
 434
 435 static size_t
 436 sort__sym_print(FILE *fp, struct hist_entry *self)
 437 {
 438         size_t ret = 0;
 439
 440         if (verbose)
 441                 ret += fprintf(fp, "  %#018llx", (__u64)self->ip);
 442
 443         if (self->dso)
 444                 ret += fprintf(fp, "  %s: ", self->dso->name);
 445         else
 446                 ret += fprintf(fp, "  %#016llx: ", (__u64)self->ip);
 447
 448         if (self->sym)
 449                 ret += fprintf(fp, "%s", self->sym->name);
 450         else
 451                 ret += fprintf(fp, "%#016llx", (__u64)self->ip);
 452
 453         return ret;
 454 }
 455
 456 static struct sort_entry sort_sym = {
 457         .header = " Shared Object: Symbol",
 458         .cmp    = sort__sym_cmp,
 459         .print  = sort__sym_print,
 460 };
 461
 462 static int sort__need_collapse = 0;
 463
 464 struct sort_dimension {
 465         char *name;
 466         struct sort_entry *entry;
 467         int taken;
 468 };
 469
 470 static struct sort_dimension sort_dimensions[] = {
 471         { .name = "pid",        .entry = &sort_thread,  },
 472         { .name = "comm",       .entry = &sort_comm,    },
 473         { .name = "dso",        .entry = &sort_dso,     },
 474         { .name = "symbol",     .entry = &sort_sym,     },
 475 };
 476
 477 static LIST_HEAD(hist_entry__sort_list);
 478
 479 static int sort_dimension__add(char *tok)
 480 {
 481         int i;
 482
 483         for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
 484                 struct sort_dimension *sd = &sort_dimensions[i];
 485
 486                 if (sd->taken)
 487                         continue;
 488
 489                 if (strncasecmp(tok, sd->name, strlen(tok)))
 490                         continue;
 491
 492                 if (sd->entry->collapse)
 493                         sort__need_collapse = 1;
 494
 495                 list_add_tail(&sd->entry->list, &hist_entry__sort_list);
 496                 sd->taken = 1;
 497
 498                 return 0;
 499         }
 500
 501         return -ESRCH;
 502 }
 503
 504 static int64_t
 505 hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
 506 {
 507         struct sort_entry *se;
 508         int64_t cmp = 0;
 509
 510         list_for_each_entry(se, &hist_entry__sort_list, list) {
 511                 cmp = se->cmp(left, right);
 512                 if (cmp)
 513                         break;
 514         }
 515
 516         return cmp;
 517 }
 518
 519 static int64_t
 520 hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
 521 {
 522         struct sort_entry *se;
 523         int64_t cmp = 0;
 524
 525         list_for_each_entry(se, &hist_entry__sort_list, list) {
 526                 int64_t (*f)(struct hist_entry *, struct hist_entry *);
 527
 528                 f = se->collapse ?: se->cmp;
 529
 530                 cmp = f(left, right);
 531                 if (cmp)
 532                         break;
 533         }
 534
 535         return cmp;
 536 }
 537
 538 static size_t
 539 hist_entry__fprintf(FILE *fp, struct hist_entry *self, uint64_t total_samples)
 540 {
 541         struct sort_entry *se;
 542         size_t ret;
 543
 544         if (total_samples) {
 545                 ret = fprintf(fp, "   %6.2f%%",
 546                                 (self->count * 100.0) / total_samples);
 547         } else
 548                 ret = fprintf(fp, "%12d ", self->count);
 549
 550         list_for_each_entry(se, &hist_entry__sort_list, list)
 551                 ret += se->print(fp, self);
 552
 553         ret += fprintf(fp, "\n");
 554
 555         return ret;
 556 }
 557
 558 /*
 559  * collect histogram counts
 560  */
 561
 562 static int
 563 hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
 564                 struct symbol *sym, uint64_t ip, char level)
 565 {
 566         struct rb_node **p = &hist.rb_node;
 567         struct rb_node *parent = NULL;
 568         struct hist_entry *he;
 569         struct hist_entry entry = {
 570                 .thread = thread,
 571                 .map    = map,
 572                 .dso    = dso,
 573                 .sym    = sym,
 574                 .ip     = ip,
 575                 .level  = level,
 576                 .count  = 1,
 577         };
 578         int cmp;
 579
 580         while (*p != NULL) {
 581                 parent = *p;
 582                 he = rb_entry(parent, struct hist_entry, rb_node);
 583
 584                 cmp = hist_entry__cmp(&entry, he);
 585
 586                 if (!cmp) {
 587                         he->count++;
 588                         return 0;
 589                 }
 590
 591                 if (cmp < 0)
 592                         p = &(*p)->rb_left;
 593                 else
 594                         p = &(*p)->rb_right;
 595         }
 596
 597         he = malloc(sizeof(*he));
 598         if (!he)
 599                 return -ENOMEM;
 600         *he = entry;
 601         rb_link_node(&he->rb_node, parent, p);
 602         rb_insert_color(&he->rb_node, &hist);
 603
 604         return 0;
 605 }
 606
 607 static void hist_entry__free(struct hist_entry *he)
 608 {
 609         free(he);
 610 }
 611
 612 /*
 613  * collapse the histogram
 614  */
 615
 616 static struct rb_root collapse_hists;
 617
 618 static void collapse__insert_entry(struct hist_entry *he)
 619 {
 620         struct rb_node **p = &collapse_hists.rb_node;
 621         struct rb_node *parent = NULL;
 622         struct hist_entry *iter;
 623         int64_t cmp;
 624
 625         while (*p != NULL) {
 626                 parent = *p;
 627                 iter = rb_entry(parent, struct hist_entry, rb_node);
 628
 629                 cmp = hist_entry__collapse(iter, he);
 630
 631                 if (!cmp) {
 632                         iter->count += he->count;
 633                         hist_entry__free(he);
 634                         return;
 635                 }
 636
 637                 if (cmp < 0)
 638                         p = &(*p)->rb_left;
 639                 else
 640                         p = &(*p)->rb_right;
 641         }
 642
 643         rb_link_node(&he->rb_node, parent, p);
 644         rb_insert_color(&he->rb_node, &collapse_hists);
 645 }
 646
 647 static void collapse__resort(void)
 648 {
 649         struct rb_node *next;
 650         struct hist_entry *n;
 651
 652         if (!sort__need_collapse)
 653                 return;
 654
 655         next = rb_first(&hist);
 656         while (next) {
 657                 n = rb_entry(next, struct hist_entry, rb_node);
 658                 next = rb_next(&n->rb_node);
 659
 660                 rb_erase(&n->rb_node, &hist);
 661                 collapse__insert_entry(n);
 662         }
 663 }
 664
 665 /*
 666  * reverse the map, sort on count.
 667  */
 668
 669 static struct rb_root output_hists;
 670
 671 static void output__insert_entry(struct hist_entry *he)
 672 {
 673         struct rb_node **p = &output_hists.rb_node;
 674         struct rb_node *parent = NULL;
 675         struct hist_entry *iter;
 676
 677         while (*p != NULL) {
 678                 parent = *p;
 679                 iter = rb_entry(parent, struct hist_entry, rb_node);
 680
 681                 if (he->count > iter->count)
 682                         p = &(*p)->rb_left;
 683                 else
 684                         p = &(*p)->rb_right;
 685         }
 686
 687         rb_link_node(&he->rb_node, parent, p);
 688         rb_insert_color(&he->rb_node, &output_hists);
 689 }
 690
 691 static void output__resort(void)
 692 {
 693         struct rb_node *next;
 694         struct hist_entry *n;
 695
 696         if (sort__need_collapse)
 697                 next = rb_first(&collapse_hists);
 698         else
 699                 next = rb_first(&hist);
 700
 701         while (next) {
 702                 n = rb_entry(next, struct hist_entry, rb_node);
 703                 next = rb_next(&n->rb_node);
 704
 705                 rb_erase(&n->rb_node, &hist);
 706                 output__insert_entry(n);
 707         }
 708 }
 709
 710 static size_t output__fprintf(FILE *fp, uint64_t total_samples)
 711 {
 712         struct hist_entry *pos;
 713         struct sort_entry *se;
 714         struct rb_node *nd;
 715         size_t ret = 0;
 716
 717         fprintf(fp, "#\n");
 718
 719         fprintf(fp, "# Overhead");
 720         list_for_each_entry(se, &hist_entry__sort_list, list)
 721                 fprintf(fp, " %s", se->header);
 722         fprintf(fp, "\n");
 723
 724         fprintf(fp, "# ........");
 725         list_for_each_entry(se, &hist_entry__sort_list, list) {
 726                 int i;
 727
 728                 fprintf(fp, "  ");
 729                 for (i = 0; i < strlen(se->header)-1; i++)
 730                         fprintf(fp, ".");
 731         }
 732         fprintf(fp, "\n");
 733
 734         fprintf(fp, "#\n");
 735
 736         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
 737                 pos = rb_entry(nd, struct hist_entry, rb_node);
 738                 ret += hist_entry__fprintf(fp, pos, total_samples);
 739         }
 740
 741         return ret;
 742 }
 743
 744 static void register_idle_thread(void)
 745 {
 746         struct thread *thread = threads__findnew(0);
 747
 748         if (thread == NULL ||
 749                         thread__set_comm(thread, "[idle]")) {
 750                 fprintf(stderr, "problem inserting idle task.\n");
 751                 exit(-1);
 752         }
 753 }
 754
 755
 756 static int __cmd_report(void)
 757 {
 758         unsigned long offset = 0;
 759         unsigned long head = 0;
 760         struct stat stat;
 761         char *buf;
 762         event_t *event;
 763         int ret, rc = EXIT_FAILURE;
 764         uint32_t size;
 765         unsigned long total = 0, total_mmap = 0, total_comm = 0, total_unknown = 0;
 766         char cwd[PATH_MAX], *cwdp = cwd;
 767         int cwdlen;
 768
 769         register_idle_thread();
 770
 771         input = open(input_name, O_RDONLY);
 772         if (input < 0) {
 773                 perror("failed to open file");
 774                 exit(-1);
 775         }
 776
 777         ret = fstat(input, &stat);
 778         if (ret < 0) {
 779                 perror("failed to stat file");
 780                 exit(-1);
 781         }
 782
 783         if (!stat.st_size) {
 784                 fprintf(stderr, "zero-sized file, nothing to do!\n");
 785                 exit(0);
 786         }
 787
 788         if (load_kernel() < 0) {
 789                 perror("failed to load kernel symbols");
 790                 return EXIT_FAILURE;
 791         }
 792
 793         if (!full_paths) {
 794                 if (getcwd(cwd, sizeof(cwd)) == NULL) {
 795                         perror("failed to get the current directory");
 796                         return EXIT_FAILURE;
 797                 }
 798                 cwdlen = strlen(cwd);
 799         } else {
 800                 cwdp = NULL;
 801                 cwdlen = 0;
 802         }
 803 remap:
 804         buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
 805                            MAP_SHARED, input, offset);
 806         if (buf == MAP_FAILED) {
 807                 perror("failed to mmap file");
 808                 exit(-1);
 809         }
 810
 811 more:
 812         event = (event_t *)(buf + head);
 813
 814         size = event->header.size;
 815         if (!size)
 816                 size = 8;
 817
 818         if (head + event->header.size >= page_size * mmap_window) {
 819                 unsigned long shift = page_size * (head / page_size);
 820                 int ret;
 821
 822                 ret = munmap(buf, page_size * mmap_window);
 823                 assert(ret == 0);
 824
 825                 offset += shift;
 826                 head -= shift;
 827                 goto remap;
 828         }
 829
 830         size = event->header.size;
 831         if (!size)
 832                 goto broken_event;
 833
 834         if (event->header.misc & PERF_EVENT_MISC_OVERFLOW) {
 835                 char level;
 836                 int show = 0;
 837                 struct dso *dso = NULL;
 838                 struct thread *thread = threads__findnew(event->ip.pid);
 839                 uint64_t ip = event->ip.ip;
 840                 struct map *map = NULL;
 841
 842                 dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p\n",
 843                         (void *)(offset + head),
 844                         (void *)(long)(event->header.size),
 845                         event->header.misc,
 846                         event->ip.pid,
 847                         (void *)(long)ip);
 848
 849                 dprintf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 850
 851                 if (thread == NULL) {
 852                         fprintf(stderr, "problem processing %d event, skipping it.\n",
 853                                 event->header.type);
 854                         goto broken_event;
 855                 }
 856
 857                 if (event->header.misc & PERF_EVENT_MISC_KERNEL) {
 858                         show = SHOW_KERNEL;
 859                         level = 'k';
 860
 861                         dso = kernel_dso;
 862
 863                         dprintf(" ...... dso: %s\n", dso->name);
 864
 865                 } else if (event->header.misc & PERF_EVENT_MISC_USER) {
 866
 867                         show = SHOW_USER;
 868                         level = '.';
 869
 870                         map = thread__find_map(thread, ip);
 871                         if (map != NULL) {
 872                                 dso = map->dso;
 873                                 ip -= map->start + map->pgoff;
 874                         } else {
 875                                 /*
 876                                  * If this is outside of all known maps,
 877                                  * and is a negative address, try to look it
 878                                  * up in the kernel dso, as it might be a
 879                                  * vsyscall (which executes in user-mode):
 880                                  */
 881                                 if ((long long)ip < 0)
 882                                         dso = kernel_dso;
 883                         }
 884                         dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
 885
 886                 } else {
 887                         show = SHOW_HV;
 888                         level = 'H';
 889                         dprintf(" ...... dso: [hypervisor]\n");
 890                 }
 891
 892                 if (show & show_mask) {
 893                         struct symbol *sym = dso__find_symbol(dso, ip);
 894
 895                         if (hist_entry__add(thread, map, dso, sym, ip, level)) {
 896                                 fprintf(stderr,
 897                 "problem incrementing symbol count, skipping event\n");
 898                                 goto broken_event;
 899                         }
 900                 }
 901                 total++;
 902         } else switch (event->header.type) {
 903         case PERF_EVENT_MMAP: {
 904                 struct thread *thread = threads__findnew(event->mmap.pid);
 905                 struct map *map = map__new(&event->mmap, cwdp, cwdlen);
 906
 907                 dprintf("%p [%p]: PERF_EVENT_MMAP: [%p(%p) @ %p]: %s\n",
 908                         (void *)(offset + head),
 909                         (void *)(long)(event->header.size),
 910                         (void *)(long)event->mmap.start,
 911                         (void *)(long)event->mmap.len,
 912                         (void *)(long)event->mmap.pgoff,
 913                         event->mmap.filename);
 914
 915                 if (thread == NULL || map == NULL) {
 916                         if (verbose)
 917                                 fprintf(stderr, "problem processing PERF_EVENT_MMAP, skipping event.\n");
 918                         goto broken_event;
 919                 }
 920                 thread__insert_map(thread, map);
 921                 total_mmap++;
 922                 break;
 923         }
 924         case PERF_EVENT_COMM: {
 925                 struct thread *thread = threads__findnew(event->comm.pid);
 926
 927                 dprintf("%p [%p]: PERF_EVENT_COMM: %s:%d\n",
 928                         (void *)(offset + head),
 929                         (void *)(long)(event->header.size),
 930                         event->comm.comm, event->comm.pid);
 931
 932                 if (thread == NULL ||
 933                     thread__set_comm(thread, event->comm.comm)) {
 934                         fprintf(stderr, "problem processing PERF_EVENT_COMM, skipping event.\n");
 935                         goto broken_event;
 936                 }
 937                 total_comm++;
 938                 break;
 939         }
 940         default: {
 941 broken_event:
 942                 dprintf("%p [%p]: skipping unknown header type: %d\n",
 943                         (void *)(offset + head),
 944                         (void *)(long)(event->header.size),
 945                         event->header.type);
 946
 947                 total_unknown++;
 948
 949                 /*
 950                  * assume we lost track of the stream, check alignment, and
 951                  * increment a single u64 in the hope to catch on again 'soon'.
 952                  */
 953
 954                 if (unlikely(head & 7))
 955                         head &= ~7ULL;
 956
 957                 size = 8;
 958         }
 959         }
 960
 961         head += size;
 962
 963         if (offset + head < stat.st_size)
 964                 goto more;
 965
 966         rc = EXIT_SUCCESS;
 967         close(input);
 968
 969         dprintf("      IP events: %10ld\n", total);
 970         dprintf("    mmap events: %10ld\n", total_mmap);
 971         dprintf("    comm events: %10ld\n", total_comm);
 972         dprintf(" unknown events: %10ld\n", total_unknown);
 973
 974         if (dump_trace)
 975                 return 0;
 976
 977         if (verbose >= 2)
 978                 dsos__fprintf(stdout);
 979
 980         collapse__resort();
 981         output__resort();
 982         output__fprintf(stdout, total);
 983
 984         return rc;
 985 }
 986
 987 static const char * const report_usage[] = {
 988         "perf report [<options>] <command>",
 989         NULL
 990 };
 991
 992 static const struct option options[] = {
 993         OPT_STRING('i', "input", &input_name, "file",
 994                     "input file name"),
 995         OPT_BOOLEAN('v', "verbose", &verbose,
 996                     "be more verbose (show symbol address, etc)"),
 997         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 998                     "dump raw trace in ASCII"),
 999         OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
1000         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1001                    "sort by key(s): pid, comm, dso, symbol. Default: pid,symbol"),
1002         OPT_BOOLEAN('P', "full-paths", &full_paths,
1003                     "Don't shorten the pathnames taking into account the cwd"),
1004         OPT_END()
1005 };
1006
1007 static void setup_sorting(void)
1008 {
1009         char *tmp, *tok, *str = strdup(sort_order);
1010
1011         for (tok = strtok_r(str, ", ", &tmp);
1012                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
1013                 if (sort_dimension__add(tok) < 0) {
1014                         error("Unknown --sort key: `%s'", tok);
1015                         usage_with_options(report_usage, options);
1016                 }
1017         }
1018
1019         free(str);
1020 }
1021
1022 int cmd_report(int argc, const char **argv, const char *prefix)
1023 {
1024         symbol__init();
1025
1026         page_size = getpagesize();
1027
1028         parse_options(argc, argv, options, report_usage, 0);
1029
1030         setup_sorting();
1031
1032         setup_pager();
1033
1034         return __cmd_report();
1035 }