tools/perf/util/hist.c

   1 #include "annotate.h"
   2 #include "util.h"
   3 #include "build-id.h"
   4 #include "hist.h"
   5 #include "session.h"
   6 #include "sort.h"
   7 #include <math.h>
   8
   9 enum hist_filter {
  10         HIST_FILTER__DSO,
  11         HIST_FILTER__THREAD,
  12         HIST_FILTER__PARENT,
  13 };
  14
  15 struct callchain_param  callchain_param = {
  16         .mode   = CHAIN_GRAPH_REL,
  17         .min_percent = 0.5
  18 };
  19
  20 u16 hists__col_len(struct hists *self, enum hist_column col)
  21 {
  22         return self->col_len[col];
  23 }
  24
  25 void hists__set_col_len(struct hists *self, enum hist_column col, u16 len)
  26 {
  27         self->col_len[col] = len;
  28 }
  29
  30 bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len)
  31 {
  32         if (len > hists__col_len(self, col)) {
  33                 hists__set_col_len(self, col, len);
  34                 return true;
  35         }
  36         return false;
  37 }
  38
  39 static void hists__reset_col_len(struct hists *self)
  40 {
  41         enum hist_column col;
  42
  43         for (col = 0; col < HISTC_NR_COLS; ++col)
  44                 hists__set_col_len(self, col, 0);
  45 }
  46
  47 static void hists__calc_col_len(struct hists *self, struct hist_entry *h)
  48 {
  49         u16 len;
  50
  51         if (h->ms.sym)
  52                 hists__new_col_len(self, HISTC_SYMBOL, h->ms.sym->namelen);
  53
  54         len = thread__comm_len(h->thread);
  55         if (hists__new_col_len(self, HISTC_COMM, len))
  56                 hists__set_col_len(self, HISTC_THREAD, len + 6);
  57
  58         if (h->ms.map) {
  59                 len = dso__name_len(h->ms.map->dso);
  60                 hists__new_col_len(self, HISTC_DSO, len);
  61         }
  62 }
  63
  64 static void hist_entry__add_cpumode_period(struct hist_entry *self,
  65                                            unsigned int cpumode, u64 period)
  66 {
  67         switch (cpumode) {
  68         case PERF_RECORD_MISC_KERNEL:
  69                 self->period_sys += period;
  70                 break;
  71         case PERF_RECORD_MISC_USER:
  72                 self->period_us += period;
  73                 break;
  74         case PERF_RECORD_MISC_GUEST_KERNEL:
  75                 self->period_guest_sys += period;
  76                 break;
  77         case PERF_RECORD_MISC_GUEST_USER:
  78                 self->period_guest_us += period;
  79                 break;
  80         default:
  81                 break;
  82         }
  83 }
  84
  85 /*
  86  * histogram, sorted on item, collects periods
  87  */
  88
  89 static struct hist_entry *hist_entry__new(struct hist_entry *template)
  90 {
  91         size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_root) : 0;
  92         struct hist_entry *self = malloc(sizeof(*self) + callchain_size);
  93
  94         if (self != NULL) {
  95                 *self = *template;
  96                 self->nr_events = 1;
  97                 if (self->ms.map)
  98                         self->ms.map->referenced = true;
  99                 if (symbol_conf.use_callchain)
 100                         callchain_init(self->callchain);
 101         }
 102
 103         return self;
 104 }
 105
 106 static void hists__inc_nr_entries(struct hists *self, struct hist_entry *h)
 107 {
 108         if (!h->filtered) {
 109                 hists__calc_col_len(self, h);
 110                 ++self->nr_entries;
 111         }
 112 }
 113
 114 static u8 symbol__parent_filter(const struct symbol *parent)
 115 {
 116         if (symbol_conf.exclude_other && parent == NULL)
 117                 return 1 << HIST_FILTER__PARENT;
 118         return 0;
 119 }
 120
 121 struct hist_entry *__hists__add_entry(struct hists *self,
 122                                       struct addr_location *al,
 123                                       struct symbol *sym_parent, u64 period)
 124 {
 125         struct rb_node **p = &self->entries.rb_node;
 126         struct rb_node *parent = NULL;
 127         struct hist_entry *he;
 128         struct hist_entry entry = {
 129                 .thread = al->thread,
 130                 .ms = {
 131                         .map    = al->map,
 132                         .sym    = al->sym,
 133                 },
 134                 .cpu    = al->cpu,
 135                 .ip     = al->addr,
 136                 .level  = al->level,
 137                 .period = period,
 138                 .parent = sym_parent,
 139                 .filtered = symbol__parent_filter(sym_parent),
 140         };
 141         int cmp;
 142
 143         while (*p != NULL) {
 144                 parent = *p;
 145                 he = rb_entry(parent, struct hist_entry, rb_node);
 146
 147                 cmp = hist_entry__cmp(&entry, he);
 148
 149                 if (!cmp) {
 150                         he->period += period;
 151                         ++he->nr_events;
 152                         goto out;
 153                 }
 154
 155                 if (cmp < 0)
 156                         p = &(*p)->rb_left;
 157                 else
 158                         p = &(*p)->rb_right;
 159         }
 160
 161         he = hist_entry__new(&entry);
 162         if (!he)
 163                 return NULL;
 164         rb_link_node(&he->rb_node, parent, p);
 165         rb_insert_color(&he->rb_node, &self->entries);
 166         hists__inc_nr_entries(self, he);
 167 out:
 168         hist_entry__add_cpumode_period(he, al->cpumode, period);
 169         return he;
 170 }
 171
 172 int64_t
 173 hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
 174 {
 175         struct sort_entry *se;
 176         int64_t cmp = 0;
 177
 178         list_for_each_entry(se, &hist_entry__sort_list, list) {
 179                 cmp = se->se_cmp(left, right);
 180                 if (cmp)
 181                         break;
 182         }
 183
 184         return cmp;
 185 }
 186
 187 int64_t
 188 hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
 189 {
 190         struct sort_entry *se;
 191         int64_t cmp = 0;
 192
 193         list_for_each_entry(se, &hist_entry__sort_list, list) {
 194                 int64_t (*f)(struct hist_entry *, struct hist_entry *);
 195
 196                 f = se->se_collapse ?: se->se_cmp;
 197
 198                 cmp = f(left, right);
 199                 if (cmp)
 200                         break;
 201         }
 202
 203         return cmp;
 204 }
 205
 206 void hist_entry__free(struct hist_entry *he)
 207 {
 208         free(he);
 209 }
 210
 211 /*
 212  * collapse the histogram
 213  */
 214
 215 static bool hists__collapse_insert_entry(struct hists *self,
 216                                          struct rb_root *root,
 217                                          struct hist_entry *he)
 218 {
 219         struct rb_node **p = &root->rb_node;
 220         struct rb_node *parent = NULL;
 221         struct hist_entry *iter;
 222         int64_t cmp;
 223
 224         while (*p != NULL) {
 225                 parent = *p;
 226                 iter = rb_entry(parent, struct hist_entry, rb_node);
 227
 228                 cmp = hist_entry__collapse(iter, he);
 229
 230                 if (!cmp) {
 231                         iter->period += he->period;
 232                         if (symbol_conf.use_callchain) {
 233                                 callchain_cursor_reset(&self->callchain_cursor);
 234                                 callchain_merge(&self->callchain_cursor, iter->callchain,
 235                                                 he->callchain);
 236                         }
 237                         hist_entry__free(he);
 238                         return false;
 239                 }
 240
 241                 if (cmp < 0)
 242                         p = &(*p)->rb_left;
 243                 else
 244                         p = &(*p)->rb_right;
 245         }
 246
 247         rb_link_node(&he->rb_node, parent, p);
 248         rb_insert_color(&he->rb_node, root);
 249         return true;
 250 }
 251
 252 void hists__collapse_resort(struct hists *self)
 253 {
 254         struct rb_root tmp;
 255         struct rb_node *next;
 256         struct hist_entry *n;
 257
 258         if (!sort__need_collapse)
 259                 return;
 260
 261         tmp = RB_ROOT;
 262         next = rb_first(&self->entries);
 263         self->nr_entries = 0;
 264         hists__reset_col_len(self);
 265
 266         while (next) {
 267                 n = rb_entry(next, struct hist_entry, rb_node);
 268                 next = rb_next(&n->rb_node);
 269
 270                 rb_erase(&n->rb_node, &self->entries);
 271                 if (hists__collapse_insert_entry(self, &tmp, n))
 272                         hists__inc_nr_entries(self, n);
 273         }
 274
 275         self->entries = tmp;
 276 }
 277
 278 /*
 279  * reverse the map, sort on period.
 280  */
 281
 282 static void __hists__insert_output_entry(struct rb_root *entries,
 283                                          struct hist_entry *he,
 284                                          u64 min_callchain_hits)
 285 {
 286         struct rb_node **p = &entries->rb_node;
 287         struct rb_node *parent = NULL;
 288         struct hist_entry *iter;
 289
 290         if (symbol_conf.use_callchain)
 291                 callchain_param.sort(&he->sorted_chain, he->callchain,
 292                                       min_callchain_hits, &callchain_param);
 293
 294         while (*p != NULL) {
 295                 parent = *p;
 296                 iter = rb_entry(parent, struct hist_entry, rb_node);
 297
 298                 if (he->period > iter->period)
 299                         p = &(*p)->rb_left;
 300                 else
 301                         p = &(*p)->rb_right;
 302         }
 303
 304         rb_link_node(&he->rb_node, parent, p);
 305         rb_insert_color(&he->rb_node, entries);
 306 }
 307
 308 void hists__output_resort(struct hists *self)
 309 {
 310         struct rb_root tmp;
 311         struct rb_node *next;
 312         struct hist_entry *n;
 313         u64 min_callchain_hits;
 314
 315         min_callchain_hits = self->stats.total_period * (callchain_param.min_percent / 100);
 316
 317         tmp = RB_ROOT;
 318         next = rb_first(&self->entries);
 319
 320         self->nr_entries = 0;
 321         hists__reset_col_len(self);
 322
 323         while (next) {
 324                 n = rb_entry(next, struct hist_entry, rb_node);
 325                 next = rb_next(&n->rb_node);
 326
 327                 rb_erase(&n->rb_node, &self->entries);
 328                 __hists__insert_output_entry(&tmp, n, min_callchain_hits);
 329                 hists__inc_nr_entries(self, n);
 330         }
 331
 332         self->entries = tmp;
 333 }
 334
 335 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
 336 {
 337         int i;
 338         int ret = fprintf(fp, "            ");
 339
 340         for (i = 0; i < left_margin; i++)
 341                 ret += fprintf(fp, " ");
 342
 343         return ret;
 344 }
 345
 346 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
 347                                           int left_margin)
 348 {
 349         int i;
 350         size_t ret = callchain__fprintf_left_margin(fp, left_margin);
 351
 352         for (i = 0; i < depth; i++)
 353                 if (depth_mask & (1 << i))
 354                         ret += fprintf(fp, "|          ");
 355                 else
 356                         ret += fprintf(fp, "           ");
 357
 358         ret += fprintf(fp, "\n");
 359
 360         return ret;
 361 }
 362
 363 static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain,
 364                                      int depth, int depth_mask, int period,
 365                                      u64 total_samples, u64 hits,
 366                                      int left_margin)
 367 {
 368         int i;
 369         size_t ret = 0;
 370
 371         ret += callchain__fprintf_left_margin(fp, left_margin);
 372         for (i = 0; i < depth; i++) {
 373                 if (depth_mask & (1 << i))
 374                         ret += fprintf(fp, "|");
 375                 else
 376                         ret += fprintf(fp, " ");
 377                 if (!period && i == depth - 1) {
 378                         double percent;
 379
 380                         percent = hits * 100.0 / total_samples;
 381                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
 382                 } else
 383                         ret += fprintf(fp, "%s", "          ");
 384         }
 385         if (chain->ms.sym)
 386                 ret += fprintf(fp, "%s\n", chain->ms.sym->name);
 387         else
 388                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
 389
 390         return ret;
 391 }
 392
 393 static struct symbol *rem_sq_bracket;
 394 static struct callchain_list rem_hits;
 395
 396 static void init_rem_hits(void)
 397 {
 398         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
 399         if (!rem_sq_bracket) {
 400                 fprintf(stderr, "Not enough memory to display remaining hits\n");
 401                 return;
 402         }
 403
 404         strcpy(rem_sq_bracket->name, "[...]");
 405         rem_hits.ms.sym = rem_sq_bracket;
 406 }
 407
 408 static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 409                                          u64 total_samples, int depth,
 410                                          int depth_mask, int left_margin)
 411 {
 412         struct rb_node *node, *next;
 413         struct callchain_node *child;
 414         struct callchain_list *chain;
 415         int new_depth_mask = depth_mask;
 416         u64 new_total;
 417         u64 remaining;
 418         size_t ret = 0;
 419         int i;
 420         uint entries_printed = 0;
 421
 422         if (callchain_param.mode == CHAIN_GRAPH_REL)
 423                 new_total = self->children_hit;
 424         else
 425                 new_total = total_samples;
 426
 427         remaining = new_total;
 428
 429         node = rb_first(&self->rb_root);
 430         while (node) {
 431                 u64 cumul;
 432
 433                 child = rb_entry(node, struct callchain_node, rb_node);
 434                 cumul = callchain_cumul_hits(child);
 435                 remaining -= cumul;
 436
 437                 /*
 438                  * The depth mask manages the output of pipes that show
 439                  * the depth. We don't want to keep the pipes of the current
 440                  * level for the last child of this depth.
 441                  * Except if we have remaining filtered hits. They will
 442                  * supersede the last child
 443                  */
 444                 next = rb_next(node);
 445                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
 446                         new_depth_mask &= ~(1 << (depth - 1));
 447
 448                 /*
 449                  * But we keep the older depth mask for the line separator
 450                  * to keep the level link until we reach the last child
 451                  */
 452                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
 453                                                    left_margin);
 454                 i = 0;
 455                 list_for_each_entry(chain, &child->val, list) {
 456                         ret += ipchain__fprintf_graph(fp, chain, depth,
 457                                                       new_depth_mask, i++,
 458                                                       new_total,
 459                                                       cumul,
 460                                                       left_margin);
 461                 }
 462                 ret += __callchain__fprintf_graph(fp, child, new_total,
 463                                                   depth + 1,
 464                                                   new_depth_mask | (1 << depth),
 465                                                   left_margin);
 466                 node = next;
 467                 if (++entries_printed == callchain_param.print_limit)
 468                         break;
 469         }
 470
 471         if (callchain_param.mode == CHAIN_GRAPH_REL &&
 472                 remaining && remaining != new_total) {
 473
 474                 if (!rem_sq_bracket)
 475                         return ret;
 476
 477                 new_depth_mask &= ~(1 << (depth - 1));
 478
 479                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
 480                                               new_depth_mask, 0, new_total,
 481                                               remaining, left_margin);
 482         }
 483
 484         return ret;
 485 }
 486
 487 static size_t callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
 488                                        u64 total_samples, int left_margin)
 489 {
 490         struct callchain_list *chain;
 491         bool printed = false;
 492         int i = 0;
 493         int ret = 0;
 494         u32 entries_printed = 0;
 495
 496         list_for_each_entry(chain, &self->val, list) {
 497                 if (!i++ && sort__first_dimension == SORT_SYM)
 498                         continue;
 499
 500                 if (!printed) {
 501                         ret += callchain__fprintf_left_margin(fp, left_margin);
 502                         ret += fprintf(fp, "|\n");
 503                         ret += callchain__fprintf_left_margin(fp, left_margin);
 504                         ret += fprintf(fp, "---");
 505
 506                         left_margin += 3;
 507                         printed = true;
 508                 } else
 509                         ret += callchain__fprintf_left_margin(fp, left_margin);
 510
 511                 if (chain->ms.sym)
 512                         ret += fprintf(fp, " %s\n", chain->ms.sym->name);
 513                 else
 514                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
 515
 516                 if (++entries_printed == callchain_param.print_limit)
 517                         break;
 518         }
 519
 520         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
 521
 522         return ret;
 523 }
 524
 525 static size_t callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
 526                                       u64 total_samples)
 527 {
 528         struct callchain_list *chain;
 529         size_t ret = 0;
 530
 531         if (!self)
 532                 return 0;
 533
 534         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
 535
 536
 537         list_for_each_entry(chain, &self->val, list) {
 538                 if (chain->ip >= PERF_CONTEXT_MAX)
 539                         continue;
 540                 if (chain->ms.sym)
 541                         ret += fprintf(fp, "                %s\n", chain->ms.sym->name);
 542                 else
 543                         ret += fprintf(fp, "                %p\n",
 544                                         (void *)(long)chain->ip);
 545         }
 546
 547         return ret;
 548 }
 549
 550 static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 551                                             u64 total_samples, int left_margin)
 552 {
 553         struct rb_node *rb_node;
 554         struct callchain_node *chain;
 555         size_t ret = 0;
 556         u32 entries_printed = 0;
 557
 558         rb_node = rb_first(&self->sorted_chain);
 559         while (rb_node) {
 560                 double percent;
 561
 562                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
 563                 percent = chain->hit * 100.0 / total_samples;
 564                 switch (callchain_param.mode) {
 565                 case CHAIN_FLAT:
 566                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
 567                                                      percent);
 568                         ret += callchain__fprintf_flat(fp, chain, total_samples);
 569                         break;
 570                 case CHAIN_GRAPH_ABS: /* Falldown */
 571                 case CHAIN_GRAPH_REL:
 572                         ret += callchain__fprintf_graph(fp, chain, total_samples,
 573                                                         left_margin);
 574                 case CHAIN_NONE:
 575                 default:
 576                         break;
 577                 }
 578                 ret += fprintf(fp, "\n");
 579                 if (++entries_printed == callchain_param.print_limit)
 580                         break;
 581                 rb_node = rb_next(rb_node);
 582         }
 583
 584         return ret;
 585 }
 586
 587 int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
 588                          struct hists *hists, struct hists *pair_hists,
 589                          bool show_displacement, long displacement,
 590                          bool color, u64 session_total)
 591 {
 592         struct sort_entry *se;
 593         u64 period, total, period_sys, period_us, period_guest_sys, period_guest_us;
 594         u64 nr_events;
 595         const char *sep = symbol_conf.field_sep;
 596         int ret;
 597
 598         if (symbol_conf.exclude_other && !self->parent)
 599                 return 0;
 600
 601         if (pair_hists) {
 602                 period = self->pair ? self->pair->period : 0;
 603                 nr_events = self->pair ? self->pair->nr_events : 0;
 604                 total = pair_hists->stats.total_period;
 605                 period_sys = self->pair ? self->pair->period_sys : 0;
 606                 period_us = self->pair ? self->pair->period_us : 0;
 607                 period_guest_sys = self->pair ? self->pair->period_guest_sys : 0;
 608                 period_guest_us = self->pair ? self->pair->period_guest_us : 0;
 609         } else {
 610                 period = self->period;
 611                 nr_events = self->nr_events;
 612                 total = session_total;
 613                 period_sys = self->period_sys;
 614                 period_us = self->period_us;
 615                 period_guest_sys = self->period_guest_sys;
 616                 period_guest_us = self->period_guest_us;
 617         }
 618
 619         if (total) {
 620                 if (color)
 621                         ret = percent_color_snprintf(s, size,
 622                                                      sep ? "%.2f" : "   %6.2f%%",
 623                                                      (period * 100.0) / total);
 624                 else
 625                         ret = snprintf(s, size, sep ? "%.2f" : "   %6.2f%%",
 626                                        (period * 100.0) / total);
 627                 if (symbol_conf.show_cpu_utilization) {
 628                         ret += percent_color_snprintf(s + ret, size - ret,
 629                                         sep ? "%.2f" : "   %6.2f%%",
 630                                         (period_sys * 100.0) / total);
 631                         ret += percent_color_snprintf(s + ret, size - ret,
 632                                         sep ? "%.2f" : "   %6.2f%%",
 633                                         (period_us * 100.0) / total);
 634                         if (perf_guest) {
 635                                 ret += percent_color_snprintf(s + ret,
 636                                                 size - ret,
 637                                                 sep ? "%.2f" : "   %6.2f%%",
 638                                                 (period_guest_sys * 100.0) /
 639                                                                 total);
 640                                 ret += percent_color_snprintf(s + ret,
 641                                                 size - ret,
 642                                                 sep ? "%.2f" : "   %6.2f%%",
 643                                                 (period_guest_us * 100.0) /
 644                                                                 total);
 645                         }
 646                 }
 647         } else
 648                 ret = snprintf(s, size, sep ? "%" PRIu64 : "%12" PRIu64 " ", period);
 649
 650         if (symbol_conf.show_nr_samples) {
 651                 if (sep)
 652                         ret += snprintf(s + ret, size - ret, "%c%" PRIu64, *sep, nr_events);
 653                 else
 654                         ret += snprintf(s + ret, size - ret, "%11" PRIu64, nr_events);
 655         }
 656
 657         if (pair_hists) {
 658                 char bf[32];
 659                 double old_percent = 0, new_percent = 0, diff;
 660
 661                 if (total > 0)
 662                         old_percent = (period * 100.0) / total;
 663                 if (session_total > 0)
 664                         new_percent = (self->period * 100.0) / session_total;
 665
 666                 diff = new_percent - old_percent;
 667
 668                 if (fabs(diff) >= 0.01)
 669                         snprintf(bf, sizeof(bf), "%+4.2F%%", diff);
 670                 else
 671                         snprintf(bf, sizeof(bf), " ");
 672
 673                 if (sep)
 674                         ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf);
 675                 else
 676                         ret += snprintf(s + ret, size - ret, "%11.11s", bf);
 677
 678                 if (show_displacement) {
 679                         if (displacement)
 680                                 snprintf(bf, sizeof(bf), "%+4ld", displacement);
 681                         else
 682                                 snprintf(bf, sizeof(bf), " ");
 683
 684                         if (sep)
 685                                 ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf);
 686                         else
 687                                 ret += snprintf(s + ret, size - ret, "%6.6s", bf);
 688                 }
 689         }
 690
 691         list_for_each_entry(se, &hist_entry__sort_list, list) {
 692                 if (se->elide)
 693                         continue;
 694
 695                 ret += snprintf(s + ret, size - ret, "%s", sep ?: "  ");
 696                 ret += se->se_snprintf(self, s + ret, size - ret,
 697                                        hists__col_len(hists, se->se_width_idx));
 698         }
 699
 700         return ret;
 701 }
 702
 703 int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
 704                         struct hists *pair_hists, bool show_displacement,
 705                         long displacement, FILE *fp, u64 session_total)
 706 {
 707         char bf[512];
 708         hist_entry__snprintf(self, bf, sizeof(bf), hists, pair_hists,
 709                              show_displacement, displacement,
 710                              true, session_total);
 711         return fprintf(fp, "%s\n", bf);
 712 }
 713
 714 static size_t hist_entry__fprintf_callchain(struct hist_entry *self,
 715                                             struct hists *hists, FILE *fp,
 716                                             u64 session_total)
 717 {
 718         int left_margin = 0;
 719
 720         if (sort__first_dimension == SORT_COMM) {
 721                 struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
 722                                                          typeof(*se), list);
 723                 left_margin = hists__col_len(hists, se->se_width_idx);
 724                 left_margin -= thread__comm_len(self->thread);
 725         }
 726
 727         return hist_entry_callchain__fprintf(fp, self, session_total,
 728                                              left_margin);
 729 }
 730
 731 size_t hists__fprintf(struct hists *self, struct hists *pair,
 732                       bool show_displacement, FILE *fp)
 733 {
 734         struct sort_entry *se;
 735         struct rb_node *nd;
 736         size_t ret = 0;
 737         unsigned long position = 1;
 738         long displacement = 0;
 739         unsigned int width;
 740         const char *sep = symbol_conf.field_sep;
 741         const char *col_width = symbol_conf.col_width_list_str;
 742
 743         init_rem_hits();
 744
 745         fprintf(fp, "# %s", pair ? "Baseline" : "Overhead");
 746
 747         if (symbol_conf.show_nr_samples) {
 748                 if (sep)
 749                         fprintf(fp, "%cSamples", *sep);
 750                 else
 751                         fputs("  Samples  ", fp);
 752         }
 753
 754         if (symbol_conf.show_cpu_utilization) {
 755                 if (sep) {
 756                         ret += fprintf(fp, "%csys", *sep);
 757                         ret += fprintf(fp, "%cus", *sep);
 758                         if (perf_guest) {
 759                                 ret += fprintf(fp, "%cguest sys", *sep);
 760                                 ret += fprintf(fp, "%cguest us", *sep);
 761                         }
 762                 } else {
 763                         ret += fprintf(fp, "  sys  ");
 764                         ret += fprintf(fp, "  us  ");
 765                         if (perf_guest) {
 766                                 ret += fprintf(fp, "  guest sys  ");
 767                                 ret += fprintf(fp, "  guest us  ");
 768                         }
 769                 }
 770         }
 771
 772         if (pair) {
 773                 if (sep)
 774                         ret += fprintf(fp, "%cDelta", *sep);
 775                 else
 776                         ret += fprintf(fp, "  Delta    ");
 777
 778                 if (show_displacement) {
 779                         if (sep)
 780                                 ret += fprintf(fp, "%cDisplacement", *sep);
 781                         else
 782                                 ret += fprintf(fp, " Displ");
 783                 }
 784         }
 785
 786         list_for_each_entry(se, &hist_entry__sort_list, list) {
 787                 if (se->elide)
 788                         continue;
 789                 if (sep) {
 790                         fprintf(fp, "%c%s", *sep, se->se_header);
 791                         continue;
 792                 }
 793                 width = strlen(se->se_header);
 794                 if (symbol_conf.col_width_list_str) {
 795                         if (col_width) {
 796                                 hists__set_col_len(self, se->se_width_idx,
 797                                                    atoi(col_width));
 798                                 col_width = strchr(col_width, ',');
 799                                 if (col_width)
 800                                         ++col_width;
 801                         }
 802                 }
 803                 if (!hists__new_col_len(self, se->se_width_idx, width))
 804                         width = hists__col_len(self, se->se_width_idx);
 805                 fprintf(fp, "  %*s", width, se->se_header);
 806         }
 807         fprintf(fp, "\n");
 808
 809         if (sep)
 810                 goto print_entries;
 811
 812         fprintf(fp, "# ........");
 813         if (symbol_conf.show_nr_samples)
 814                 fprintf(fp, " ..........");
 815         if (pair) {
 816                 fprintf(fp, " ..........");
 817                 if (show_displacement)
 818                         fprintf(fp, " .....");
 819         }
 820         list_for_each_entry(se, &hist_entry__sort_list, list) {
 821                 unsigned int i;
 822
 823                 if (se->elide)
 824                         continue;
 825
 826                 fprintf(fp, "  ");
 827                 width = hists__col_len(self, se->se_width_idx);
 828                 if (width == 0)
 829                         width = strlen(se->se_header);
 830                 for (i = 0; i < width; i++)
 831                         fprintf(fp, ".");
 832         }
 833
 834         fprintf(fp, "\n#\n");
 835
 836 print_entries:
 837         for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
 838                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 839
 840                 if (show_displacement) {
 841                         if (h->pair != NULL)
 842                                 displacement = ((long)h->pair->position -
 843                                                 (long)position);
 844                         else
 845                                 displacement = 0;
 846                         ++position;
 847                 }
 848                 ret += hist_entry__fprintf(h, self, pair, show_displacement,
 849                                            displacement, fp, self->stats.total_period);
 850
 851                 if (symbol_conf.use_callchain)
 852                         ret += hist_entry__fprintf_callchain(h, self, fp,
 853                                                              self->stats.total_period);
 854                 if (h->ms.map == NULL && verbose > 1) {
 855                         __map_groups__fprintf_maps(&h->thread->mg,
 856                                                    MAP__FUNCTION, verbose, fp);
 857                         fprintf(fp, "%.10s end\n", graph_dotted_line);
 858                 }
 859         }
 860
 861         free(rem_sq_bracket);
 862
 863         return ret;
 864 }
 865
 866 /*
 867  * See hists__fprintf to match the column widths
 868  */
 869 unsigned int hists__sort_list_width(struct hists *self)
 870 {
 871         struct sort_entry *se;
 872         int ret = 9; /* total % */
 873
 874         if (symbol_conf.show_cpu_utilization) {
 875                 ret += 7; /* count_sys % */
 876                 ret += 6; /* count_us % */
 877                 if (perf_guest) {
 878                         ret += 13; /* count_guest_sys % */
 879                         ret += 12; /* count_guest_us % */
 880                 }
 881         }
 882
 883         if (symbol_conf.show_nr_samples)
 884                 ret += 11;
 885
 886         list_for_each_entry(se, &hist_entry__sort_list, list)
 887                 if (!se->elide)
 888                         ret += 2 + hists__col_len(self, se->se_width_idx);
 889
 890         if (verbose) /* Addr + origin */
 891                 ret += 3 + BITS_PER_LONG / 4;
 892
 893         return ret;
 894 }
 895
 896 static void hists__remove_entry_filter(struct hists *self, struct hist_entry *h,
 897                                        enum hist_filter filter)
 898 {
 899         h->filtered &= ~(1 << filter);
 900         if (h->filtered)
 901                 return;
 902
 903         ++self->nr_entries;
 904         if (h->ms.unfolded)
 905                 self->nr_entries += h->nr_rows;
 906         h->row_offset = 0;
 907         self->stats.total_period += h->period;
 908         self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
 909
 910         hists__calc_col_len(self, h);
 911 }
 912
 913 void hists__filter_by_dso(struct hists *self, const struct dso *dso)
 914 {
 915         struct rb_node *nd;
 916
 917         self->nr_entries = self->stats.total_period = 0;
 918         self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
 919         hists__reset_col_len(self);
 920
 921         for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
 922                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 923
 924                 if (symbol_conf.exclude_other && !h->parent)
 925                         continue;
 926
 927                 if (dso != NULL && (h->ms.map == NULL || h->ms.map->dso != dso)) {
 928                         h->filtered |= (1 << HIST_FILTER__DSO);
 929                         continue;
 930                 }
 931
 932                 hists__remove_entry_filter(self, h, HIST_FILTER__DSO);
 933         }
 934 }
 935
 936 void hists__filter_by_thread(struct hists *self, const struct thread *thread)
 937 {
 938         struct rb_node *nd;
 939
 940         self->nr_entries = self->stats.total_period = 0;
 941         self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
 942         hists__reset_col_len(self);
 943
 944         for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
 945                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 946
 947                 if (thread != NULL && h->thread != thread) {
 948                         h->filtered |= (1 << HIST_FILTER__THREAD);
 949                         continue;
 950                 }
 951
 952                 hists__remove_entry_filter(self, h, HIST_FILTER__THREAD);
 953         }
 954 }
 955
 956 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 957 {
 958         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 959 }
 960
 961 int hist_entry__annotate(struct hist_entry *he, size_t privsize)
 962 {
 963         return symbol__annotate(he->ms.sym, he->ms.map, privsize);
 964 }
 965
 966 void hists__inc_nr_events(struct hists *self, u32 type)
 967 {
 968         ++self->stats.nr_events[0];
 969         ++self->stats.nr_events[type];
 970 }
 971
 972 size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
 973 {
 974         int i;
 975         size_t ret = 0;
 976
 977         for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) {
 978                 const char *name = perf_event__name(i);
 979
 980                 if (!strcmp(name, "UNKNOWN"))
 981                         continue;
 982
 983                 ret += fprintf(fp, "%16s events: %10d\n", name,
 984                                self->stats.nr_events[i]);
 985         }
 986
 987         return ret;
 988 }