tools/perf/util/hist.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "callchain.h"
   3 #include "debug.h"
   4 #include "dso.h"
   5 #include "build-id.h"
   6 #include "hist.h"
   7 #include "map.h"
   8 #include "map_symbol.h"
   9 #include "branch.h"
  10 #include "mem-events.h"
  11 #include "session.h"
  12 #include "namespaces.h"
  13 #include "cgroup.h"
  14 #include "sort.h"
  15 #include "units.h"
  16 #include "evlist.h"
  17 #include "evsel.h"
  18 #include "annotate.h"
  19 #include "srcline.h"
  20 #include "symbol.h"
  21 #include "thread.h"
  22 #include "block-info.h"
  23 #include "ui/progress.h"
  24 #include <errno.h>
  25 #include <math.h>
  26 #include <inttypes.h>
  27 #include <sys/param.h>
  28 #include <linux/rbtree.h>
  29 #include <linux/string.h>
  30 #include <linux/time64.h>
  31 #include <linux/zalloc.h>
  32
  33 static bool hists__filter_entry_by_dso(struct hists *hists,
  34                                        struct hist_entry *he);
  35 static bool hists__filter_entry_by_thread(struct hists *hists,
  36                                           struct hist_entry *he);
  37 static bool hists__filter_entry_by_symbol(struct hists *hists,
  38                                           struct hist_entry *he);
  39 static bool hists__filter_entry_by_socket(struct hists *hists,
  40                                           struct hist_entry *he);
  41
  42 u16 hists__col_len(struct hists *hists, enum hist_column col)
  43 {
  44         return hists->col_len[col];
  45 }
  46
  47 void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len)
  48 {
  49         hists->col_len[col] = len;
  50 }
  51
  52 bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len)
  53 {
  54         if (len > hists__col_len(hists, col)) {
  55                 hists__set_col_len(hists, col, len);
  56                 return true;
  57         }
  58         return false;
  59 }
  60
  61 void hists__reset_col_len(struct hists *hists)
  62 {
  63         enum hist_column col;
  64
  65         for (col = 0; col < HISTC_NR_COLS; ++col)
  66                 hists__set_col_len(hists, col, 0);
  67 }
  68
  69 static void hists__set_unres_dso_col_len(struct hists *hists, int dso)
  70 {
  71         const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
  72
  73         if (hists__col_len(hists, dso) < unresolved_col_width &&
  74             !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
  75             !symbol_conf.dso_list)
  76                 hists__set_col_len(hists, dso, unresolved_col_width);
  77 }
  78
  79 void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
  80 {
  81         const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
  82         int symlen;
  83         u16 len;
  84
  85         if (h->block_info)
  86                 return;
  87         /*
  88          * +4 accounts for '[x] ' priv level info
  89          * +2 accounts for 0x prefix on raw addresses
  90          * +3 accounts for ' y ' symtab origin info
  91          */
  92         if (h->ms.sym) {
  93                 symlen = h->ms.sym->namelen + 4;
  94                 if (verbose > 0)
  95                         symlen += BITS_PER_LONG / 4 + 2 + 3;
  96                 hists__new_col_len(hists, HISTC_SYMBOL, symlen);
  97         } else {
  98                 symlen = unresolved_col_width + 4 + 2;
  99                 hists__new_col_len(hists, HISTC_SYMBOL, symlen);
 100                 hists__set_unres_dso_col_len(hists, HISTC_DSO);
 101         }
 102
 103         len = thread__comm_len(h->thread);
 104         if (hists__new_col_len(hists, HISTC_COMM, len))
 105                 hists__set_col_len(hists, HISTC_THREAD, len + 8);
 106
 107         if (h->ms.map) {
 108                 len = dso__name_len(h->ms.map->dso);
 109                 hists__new_col_len(hists, HISTC_DSO, len);
 110         }
 111
 112         if (h->parent)
 113                 hists__new_col_len(hists, HISTC_PARENT, h->parent->namelen);
 114
 115         if (h->branch_info) {
 116                 if (h->branch_info->from.ms.sym) {
 117                         symlen = (int)h->branch_info->from.ms.sym->namelen + 4;
 118                         if (verbose > 0)
 119                                 symlen += BITS_PER_LONG / 4 + 2 + 3;
 120                         hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
 121
 122                         symlen = dso__name_len(h->branch_info->from.ms.map->dso);
 123                         hists__new_col_len(hists, HISTC_DSO_FROM, symlen);
 124                 } else {
 125                         symlen = unresolved_col_width + 4 + 2;
 126                         hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
 127                         hists__set_unres_dso_col_len(hists, HISTC_DSO_FROM);
 128                 }
 129
 130                 if (h->branch_info->to.ms.sym) {
 131                         symlen = (int)h->branch_info->to.ms.sym->namelen + 4;
 132                         if (verbose > 0)
 133                                 symlen += BITS_PER_LONG / 4 + 2 + 3;
 134                         hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
 135
 136                         symlen = dso__name_len(h->branch_info->to.ms.map->dso);
 137                         hists__new_col_len(hists, HISTC_DSO_TO, symlen);
 138                 } else {
 139                         symlen = unresolved_col_width + 4 + 2;
 140                         hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
 141                         hists__set_unres_dso_col_len(hists, HISTC_DSO_TO);
 142                 }
 143
 144                 if (h->branch_info->srcline_from)
 145                         hists__new_col_len(hists, HISTC_SRCLINE_FROM,
 146                                         strlen(h->branch_info->srcline_from));
 147                 if (h->branch_info->srcline_to)
 148                         hists__new_col_len(hists, HISTC_SRCLINE_TO,
 149                                         strlen(h->branch_info->srcline_to));
 150         }
 151
 152         if (h->mem_info) {
 153                 if (h->mem_info->daddr.ms.sym) {
 154                         symlen = (int)h->mem_info->daddr.ms.sym->namelen + 4
 155                                + unresolved_col_width + 2;
 156                         hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL,
 157                                            symlen);
 158                         hists__new_col_len(hists, HISTC_MEM_DCACHELINE,
 159                                            symlen + 1);
 160                 } else {
 161                         symlen = unresolved_col_width + 4 + 2;
 162                         hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL,
 163                                            symlen);
 164                         hists__new_col_len(hists, HISTC_MEM_DCACHELINE,
 165                                            symlen);
 166                 }
 167
 168                 if (h->mem_info->iaddr.ms.sym) {
 169                         symlen = (int)h->mem_info->iaddr.ms.sym->namelen + 4
 170                                + unresolved_col_width + 2;
 171                         hists__new_col_len(hists, HISTC_MEM_IADDR_SYMBOL,
 172                                            symlen);
 173                 } else {
 174                         symlen = unresolved_col_width + 4 + 2;
 175                         hists__new_col_len(hists, HISTC_MEM_IADDR_SYMBOL,
 176                                            symlen);
 177                 }
 178
 179                 if (h->mem_info->daddr.ms.map) {
 180                         symlen = dso__name_len(h->mem_info->daddr.ms.map->dso);
 181                         hists__new_col_len(hists, HISTC_MEM_DADDR_DSO,
 182                                            symlen);
 183                 } else {
 184                         symlen = unresolved_col_width + 4 + 2;
 185                         hists__set_unres_dso_col_len(hists, HISTC_MEM_DADDR_DSO);
 186                 }
 187
 188                 hists__new_col_len(hists, HISTC_MEM_PHYS_DADDR,
 189                                    unresolved_col_width + 4 + 2);
 190
 191                 hists__new_col_len(hists, HISTC_MEM_DATA_PAGE_SIZE,
 192                                    unresolved_col_width + 4 + 2);
 193
 194         } else {
 195                 symlen = unresolved_col_width + 4 + 2;
 196                 hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL, symlen);
 197                 hists__new_col_len(hists, HISTC_MEM_IADDR_SYMBOL, symlen);
 198                 hists__set_unres_dso_col_len(hists, HISTC_MEM_DADDR_DSO);
 199         }
 200
 201         hists__new_col_len(hists, HISTC_CGROUP, 6);
 202         hists__new_col_len(hists, HISTC_CGROUP_ID, 20);
 203         hists__new_col_len(hists, HISTC_CPU, 3);
 204         hists__new_col_len(hists, HISTC_SOCKET, 6);
 205         hists__new_col_len(hists, HISTC_MEM_LOCKED, 6);
 206         hists__new_col_len(hists, HISTC_MEM_TLB, 22);
 207         hists__new_col_len(hists, HISTC_MEM_SNOOP, 12);
 208         hists__new_col_len(hists, HISTC_MEM_LVL, 21 + 3);
 209         hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
 210         hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
 211         hists__new_col_len(hists, HISTC_MEM_BLOCKED, 10);
 212         hists__new_col_len(hists, HISTC_LOCAL_INS_LAT, 13);
 213         hists__new_col_len(hists, HISTC_GLOBAL_INS_LAT, 13);
 214         hists__new_col_len(hists, HISTC_P_STAGE_CYC, 13);
 215         if (symbol_conf.nanosecs)
 216                 hists__new_col_len(hists, HISTC_TIME, 16);
 217         else
 218                 hists__new_col_len(hists, HISTC_TIME, 12);
 219         hists__new_col_len(hists, HISTC_CODE_PAGE_SIZE, 6);
 220
 221         if (h->srcline) {
 222                 len = MAX(strlen(h->srcline), strlen(sort_srcline.se_header));
 223                 hists__new_col_len(hists, HISTC_SRCLINE, len);
 224         }
 225
 226         if (h->srcfile)
 227                 hists__new_col_len(hists, HISTC_SRCFILE, strlen(h->srcfile));
 228
 229         if (h->transaction)
 230                 hists__new_col_len(hists, HISTC_TRANSACTION,
 231                                    hist_entry__transaction_len());
 232
 233         if (h->trace_output)
 234                 hists__new_col_len(hists, HISTC_TRACE, strlen(h->trace_output));
 235
 236         if (h->cgroup) {
 237                 const char *cgrp_name = "unknown";
 238                 struct cgroup *cgrp = cgroup__find(h->ms.maps->machine->env,
 239                                                    h->cgroup);
 240                 if (cgrp != NULL)
 241                         cgrp_name = cgrp->name;
 242
 243                 hists__new_col_len(hists, HISTC_CGROUP, strlen(cgrp_name));
 244         }
 245 }
 246
 247 void hists__output_recalc_col_len(struct hists *hists, int max_rows)
 248 {
 249         struct rb_node *next = rb_first_cached(&hists->entries);
 250         struct hist_entry *n;
 251         int row = 0;
 252
 253         hists__reset_col_len(hists);
 254
 255         while (next && row++ < max_rows) {
 256                 n = rb_entry(next, struct hist_entry, rb_node);
 257                 if (!n->filtered)
 258                         hists__calc_col_len(hists, n);
 259                 next = rb_next(&n->rb_node);
 260         }
 261 }
 262
 263 static void he_stat__add_cpumode_period(struct he_stat *he_stat,
 264                                         unsigned int cpumode, u64 period)
 265 {
 266         switch (cpumode) {
 267         case PERF_RECORD_MISC_KERNEL:
 268                 he_stat->period_sys += period;
 269                 break;
 270         case PERF_RECORD_MISC_USER:
 271                 he_stat->period_us += period;
 272                 break;
 273         case PERF_RECORD_MISC_GUEST_KERNEL:
 274                 he_stat->period_guest_sys += period;
 275                 break;
 276         case PERF_RECORD_MISC_GUEST_USER:
 277                 he_stat->period_guest_us += period;
 278                 break;
 279         default:
 280                 break;
 281         }
 282 }
 283
 284 static long hist_time(unsigned long htime)
 285 {
 286         unsigned long time_quantum = symbol_conf.time_quantum;
 287         if (time_quantum)
 288                 return (htime / time_quantum) * time_quantum;
 289         return htime;
 290 }
 291
 292 static void he_stat__add_period(struct he_stat *he_stat, u64 period)
 293 {
 294         he_stat->period         += period;
 295         he_stat->nr_events      += 1;
 296 }
 297
 298 static void he_stat__add_stat(struct he_stat *dest, struct he_stat *src)
 299 {
 300         dest->period            += src->period;
 301         dest->period_sys        += src->period_sys;
 302         dest->period_us         += src->period_us;
 303         dest->period_guest_sys  += src->period_guest_sys;
 304         dest->period_guest_us   += src->period_guest_us;
 305         dest->nr_events         += src->nr_events;
 306 }
 307
 308 static void he_stat__decay(struct he_stat *he_stat)
 309 {
 310         he_stat->period = (he_stat->period * 7) / 8;
 311         he_stat->nr_events = (he_stat->nr_events * 7) / 8;
 312         /* XXX need decay for weight too? */
 313 }
 314
 315 static void hists__delete_entry(struct hists *hists, struct hist_entry *he);
 316
 317 static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
 318 {
 319         u64 prev_period = he->stat.period;
 320         u64 diff;
 321
 322         if (prev_period == 0)
 323                 return true;
 324
 325         he_stat__decay(&he->stat);
 326         if (symbol_conf.cumulate_callchain)
 327                 he_stat__decay(he->stat_acc);
 328         decay_callchain(he->callchain);
 329
 330         diff = prev_period - he->stat.period;
 331
 332         if (!he->depth) {
 333                 hists->stats.total_period -= diff;
 334                 if (!he->filtered)
 335                         hists->stats.total_non_filtered_period -= diff;
 336         }
 337
 338         if (!he->leaf) {
 339                 struct hist_entry *child;
 340                 struct rb_node *node = rb_first_cached(&he->hroot_out);
 341                 while (node) {
 342                         child = rb_entry(node, struct hist_entry, rb_node);
 343                         node = rb_next(node);
 344
 345                         if (hists__decay_entry(hists, child))
 346                                 hists__delete_entry(hists, child);
 347                 }
 348         }
 349
 350         return he->stat.period == 0;
 351 }
 352
 353 static void hists__delete_entry(struct hists *hists, struct hist_entry *he)
 354 {
 355         struct rb_root_cached *root_in;
 356         struct rb_root_cached *root_out;
 357
 358         if (he->parent_he) {
 359                 root_in  = &he->parent_he->hroot_in;
 360                 root_out = &he->parent_he->hroot_out;
 361         } else {
 362                 if (hists__has(hists, need_collapse))
 363                         root_in = &hists->entries_collapsed;
 364                 else
 365                         root_in = hists->entries_in;
 366                 root_out = &hists->entries;
 367         }
 368
 369         rb_erase_cached(&he->rb_node_in, root_in);
 370         rb_erase_cached(&he->rb_node, root_out);
 371
 372         --hists->nr_entries;
 373         if (!he->filtered)
 374                 --hists->nr_non_filtered_entries;
 375
 376         hist_entry__delete(he);
 377 }
 378
 379 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
 380 {
 381         struct rb_node *next = rb_first_cached(&hists->entries);
 382         struct hist_entry *n;
 383
 384         while (next) {
 385                 n = rb_entry(next, struct hist_entry, rb_node);
 386                 next = rb_next(&n->rb_node);
 387                 if (((zap_user && n->level == '.') ||
 388                      (zap_kernel && n->level != '.') ||
 389                      hists__decay_entry(hists, n))) {
 390                         hists__delete_entry(hists, n);
 391                 }
 392         }
 393 }
 394
 395 void hists__delete_entries(struct hists *hists)
 396 {
 397         struct rb_node *next = rb_first_cached(&hists->entries);
 398         struct hist_entry *n;
 399
 400         while (next) {
 401                 n = rb_entry(next, struct hist_entry, rb_node);
 402                 next = rb_next(&n->rb_node);
 403
 404                 hists__delete_entry(hists, n);
 405         }
 406 }
 407
 408 struct hist_entry *hists__get_entry(struct hists *hists, int idx)
 409 {
 410         struct rb_node *next = rb_first_cached(&hists->entries);
 411         struct hist_entry *n;
 412         int i = 0;
 413
 414         while (next) {
 415                 n = rb_entry(next, struct hist_entry, rb_node);
 416                 if (i == idx)
 417                         return n;
 418
 419                 next = rb_next(&n->rb_node);
 420                 i++;
 421         }
 422
 423         return NULL;
 424 }
 425
 426 /*
 427  * histogram, sorted on item, collects periods
 428  */
 429
 430 static int hist_entry__init(struct hist_entry *he,
 431                             struct hist_entry *template,
 432                             bool sample_self,
 433                             size_t callchain_size)
 434 {
 435         *he = *template;
 436         he->callchain_size = callchain_size;
 437
 438         if (symbol_conf.cumulate_callchain) {
 439                 he->stat_acc = malloc(sizeof(he->stat));
 440                 if (he->stat_acc == NULL)
 441                         return -ENOMEM;
 442                 memcpy(he->stat_acc, &he->stat, sizeof(he->stat));
 443                 if (!sample_self)
 444                         memset(&he->stat, 0, sizeof(he->stat));
 445         }
 446
 447         map__get(he->ms.map);
 448
 449         if (he->branch_info) {
 450                 /*
 451                  * This branch info is (a part of) allocated from
 452                  * sample__resolve_bstack() and will be freed after
 453                  * adding new entries.  So we need to save a copy.
 454                  */
 455                 he->branch_info = malloc(sizeof(*he->branch_info));
 456                 if (he->branch_info == NULL)
 457                         goto err;
 458
 459                 memcpy(he->branch_info, template->branch_info,
 460                        sizeof(*he->branch_info));
 461
 462                 map__get(he->branch_info->from.ms.map);
 463                 map__get(he->branch_info->to.ms.map);
 464         }
 465
 466         if (he->mem_info) {
 467                 map__get(he->mem_info->iaddr.ms.map);
 468                 map__get(he->mem_info->daddr.ms.map);
 469         }
 470
 471         if (hist_entry__has_callchains(he) && symbol_conf.use_callchain)
 472                 callchain_init(he->callchain);
 473
 474         if (he->raw_data) {
 475                 he->raw_data = memdup(he->raw_data, he->raw_size);
 476                 if (he->raw_data == NULL)
 477                         goto err_infos;
 478         }
 479
 480         if (he->srcline) {
 481                 he->srcline = strdup(he->srcline);
 482                 if (he->srcline == NULL)
 483                         goto err_rawdata;
 484         }
 485
 486         if (symbol_conf.res_sample) {
 487                 he->res_samples = calloc(sizeof(struct res_sample),
 488                                         symbol_conf.res_sample);
 489                 if (!he->res_samples)
 490                         goto err_srcline;
 491         }
 492
 493         INIT_LIST_HEAD(&he->pairs.node);
 494         thread__get(he->thread);
 495         he->hroot_in  = RB_ROOT_CACHED;
 496         he->hroot_out = RB_ROOT_CACHED;
 497
 498         if (!symbol_conf.report_hierarchy)
 499                 he->leaf = true;
 500
 501         return 0;
 502
 503 err_srcline:
 504         zfree(&he->srcline);
 505
 506 err_rawdata:
 507         zfree(&he->raw_data);
 508
 509 err_infos:
 510         if (he->branch_info) {
 511                 map__put(he->branch_info->from.ms.map);
 512                 map__put(he->branch_info->to.ms.map);
 513                 zfree(&he->branch_info);
 514         }
 515         if (he->mem_info) {
 516                 map__put(he->mem_info->iaddr.ms.map);
 517                 map__put(he->mem_info->daddr.ms.map);
 518         }
 519 err:
 520         map__zput(he->ms.map);
 521         zfree(&he->stat_acc);
 522         return -ENOMEM;
 523 }
 524
 525 static void *hist_entry__zalloc(size_t size)
 526 {
 527         return zalloc(size + sizeof(struct hist_entry));
 528 }
 529
 530 static void hist_entry__free(void *ptr)
 531 {
 532         free(ptr);
 533 }
 534
 535 static struct hist_entry_ops default_ops = {
 536         .new    = hist_entry__zalloc,
 537         .free   = hist_entry__free,
 538 };
 539
 540 static struct hist_entry *hist_entry__new(struct hist_entry *template,
 541                                           bool sample_self)
 542 {
 543         struct hist_entry_ops *ops = template->ops;
 544         size_t callchain_size = 0;
 545         struct hist_entry *he;
 546         int err = 0;
 547
 548         if (!ops)
 549                 ops = template->ops = &default_ops;
 550
 551         if (symbol_conf.use_callchain)
 552                 callchain_size = sizeof(struct callchain_root);
 553
 554         he = ops->new(callchain_size);
 555         if (he) {
 556                 err = hist_entry__init(he, template, sample_self, callchain_size);
 557                 if (err) {
 558                         ops->free(he);
 559                         he = NULL;
 560                 }
 561         }
 562
 563         return he;
 564 }
 565
 566 static u8 symbol__parent_filter(const struct symbol *parent)
 567 {
 568         if (symbol_conf.exclude_other && parent == NULL)
 569                 return 1 << HIST_FILTER__PARENT;
 570         return 0;
 571 }
 572
 573 static void hist_entry__add_callchain_period(struct hist_entry *he, u64 period)
 574 {
 575         if (!hist_entry__has_callchains(he) || !symbol_conf.use_callchain)
 576                 return;
 577
 578         he->hists->callchain_period += period;
 579         if (!he->filtered)
 580                 he->hists->callchain_non_filtered_period += period;
 581 }
 582
 583 static struct hist_entry *hists__findnew_entry(struct hists *hists,
 584                                                struct hist_entry *entry,
 585                                                struct addr_location *al,
 586                                                bool sample_self)
 587 {
 588         struct rb_node **p;
 589         struct rb_node *parent = NULL;
 590         struct hist_entry *he;
 591         int64_t cmp;
 592         u64 period = entry->stat.period;
 593         bool leftmost = true;
 594
 595         p = &hists->entries_in->rb_root.rb_node;
 596
 597         while (*p != NULL) {
 598                 parent = *p;
 599                 he = rb_entry(parent, struct hist_entry, rb_node_in);
 600
 601                 /*
 602                  * Make sure that it receives arguments in a same order as
 603                  * hist_entry__collapse() so that we can use an appropriate
 604                  * function when searching an entry regardless which sort
 605                  * keys were used.
 606                  */
 607                 cmp = hist_entry__cmp(he, entry);
 608
 609                 if (!cmp) {
 610                         if (sample_self) {
 611                                 he_stat__add_period(&he->stat, period);
 612                                 hist_entry__add_callchain_period(he, period);
 613                         }
 614                         if (symbol_conf.cumulate_callchain)
 615                                 he_stat__add_period(he->stat_acc, period);
 616
 617                         /*
 618                          * This mem info was allocated from sample__resolve_mem
 619                          * and will not be used anymore.
 620                          */
 621                         mem_info__zput(entry->mem_info);
 622
 623                         block_info__zput(entry->block_info);
 624
 625                         /* If the map of an existing hist_entry has
 626                          * become out-of-date due to an exec() or
 627                          * similar, update it.  Otherwise we will
 628                          * mis-adjust symbol addresses when computing
 629                          * the history counter to increment.
 630                          */
 631                         if (he->ms.map != entry->ms.map) {
 632                                 map__put(he->ms.map);
 633                                 he->ms.map = map__get(entry->ms.map);
 634                         }
 635                         goto out;
 636                 }
 637
 638                 if (cmp < 0)
 639                         p = &(*p)->rb_left;
 640                 else {
 641                         p = &(*p)->rb_right;
 642                         leftmost = false;
 643                 }
 644         }
 645
 646         he = hist_entry__new(entry, sample_self);
 647         if (!he)
 648                 return NULL;
 649
 650         if (sample_self)
 651                 hist_entry__add_callchain_period(he, period);
 652         hists->nr_entries++;
 653
 654         rb_link_node(&he->rb_node_in, parent, p);
 655         rb_insert_color_cached(&he->rb_node_in, hists->entries_in, leftmost);
 656 out:
 657         if (sample_self)
 658                 he_stat__add_cpumode_period(&he->stat, al->cpumode, period);
 659         if (symbol_conf.cumulate_callchain)
 660                 he_stat__add_cpumode_period(he->stat_acc, al->cpumode, period);
 661         return he;
 662 }
 663
 664 static unsigned random_max(unsigned high)
 665 {
 666         unsigned thresh = -high % high;
 667         for (;;) {
 668                 unsigned r = random();
 669                 if (r >= thresh)
 670                         return r % high;
 671         }
 672 }
 673
 674 static void hists__res_sample(struct hist_entry *he, struct perf_sample *sample)
 675 {
 676         struct res_sample *r;
 677         int j;
 678
 679         if (he->num_res < symbol_conf.res_sample) {
 680                 j = he->num_res++;
 681         } else {
 682                 j = random_max(symbol_conf.res_sample);
 683         }
 684         r = &he->res_samples[j];
 685         r->time = sample->time;
 686         r->cpu = sample->cpu;
 687         r->tid = sample->tid;
 688 }
 689
 690 static struct hist_entry*
 691 __hists__add_entry(struct hists *hists,
 692                    struct addr_location *al,
 693                    struct symbol *sym_parent,
 694                    struct branch_info *bi,
 695                    struct mem_info *mi,
 696                    struct block_info *block_info,
 697                    struct perf_sample *sample,
 698                    bool sample_self,
 699                    struct hist_entry_ops *ops)
 700 {
 701         struct namespaces *ns = thread__namespaces(al->thread);
 702         struct hist_entry entry = {
 703                 .thread = al->thread,
 704                 .comm = thread__comm(al->thread),
 705                 .cgroup_id = {
 706                         .dev = ns ? ns->link_info[CGROUP_NS_INDEX].dev : 0,
 707                         .ino = ns ? ns->link_info[CGROUP_NS_INDEX].ino : 0,
 708                 },
 709                 .cgroup = sample->cgroup,
 710                 .ms = {
 711                         .maps   = al->maps,
 712                         .map    = al->map,
 713                         .sym    = al->sym,
 714                 },
 715                 .srcline = (char *) al->srcline,
 716                 .socket  = al->socket,
 717                 .cpu     = al->cpu,
 718                 .cpumode = al->cpumode,
 719                 .ip      = al->addr,
 720                 .level   = al->level,
 721                 .code_page_size = sample->code_page_size,
 722                 .stat = {
 723                         .nr_events = 1,
 724                         .period = sample->period,
 725                 },
 726                 .parent = sym_parent,
 727                 .filtered = symbol__parent_filter(sym_parent) | al->filtered,
 728                 .hists  = hists,
 729                 .branch_info = bi,
 730                 .mem_info = mi,
 731                 .block_info = block_info,
 732                 .transaction = sample->transaction,
 733                 .raw_data = sample->raw_data,
 734                 .raw_size = sample->raw_size,
 735                 .ops = ops,
 736                 .time = hist_time(sample->time),
 737                 .weight = sample->weight,
 738                 .ins_lat = sample->ins_lat,
 739                 .p_stage_cyc = sample->p_stage_cyc,
 740         }, *he = hists__findnew_entry(hists, &entry, al, sample_self);
 741
 742         if (!hists->has_callchains && he && he->callchain_size != 0)
 743                 hists->has_callchains = true;
 744         if (he && symbol_conf.res_sample)
 745                 hists__res_sample(he, sample);
 746         return he;
 747 }
 748
 749 struct hist_entry *hists__add_entry(struct hists *hists,
 750                                     struct addr_location *al,
 751                                     struct symbol *sym_parent,
 752                                     struct branch_info *bi,
 753                                     struct mem_info *mi,
 754                                     struct perf_sample *sample,
 755                                     bool sample_self)
 756 {
 757         return __hists__add_entry(hists, al, sym_parent, bi, mi, NULL,
 758                                   sample, sample_self, NULL);
 759 }
 760
 761 struct hist_entry *hists__add_entry_ops(struct hists *hists,
 762                                         struct hist_entry_ops *ops,
 763                                         struct addr_location *al,
 764                                         struct symbol *sym_parent,
 765                                         struct branch_info *bi,
 766                                         struct mem_info *mi,
 767                                         struct perf_sample *sample,
 768                                         bool sample_self)
 769 {
 770         return __hists__add_entry(hists, al, sym_parent, bi, mi, NULL,
 771                                   sample, sample_self, ops);
 772 }
 773
 774 struct hist_entry *hists__add_entry_block(struct hists *hists,
 775                                           struct addr_location *al,
 776                                           struct block_info *block_info)
 777 {
 778         struct hist_entry entry = {
 779                 .block_info = block_info,
 780                 .hists = hists,
 781                 .ms = {
 782                         .maps = al->maps,
 783                         .map = al->map,
 784                         .sym = al->sym,
 785                 },
 786         }, *he = hists__findnew_entry(hists, &entry, al, false);
 787
 788         return he;
 789 }
 790
 791 static int
 792 iter_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
 793                     struct addr_location *al __maybe_unused)
 794 {
 795         return 0;
 796 }
 797
 798 static int
 799 iter_add_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
 800                         struct addr_location *al __maybe_unused)
 801 {
 802         return 0;
 803 }
 804
 805 static int
 806 iter_prepare_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
 807 {
 808         struct perf_sample *sample = iter->sample;
 809         struct mem_info *mi;
 810
 811         mi = sample__resolve_mem(sample, al);
 812         if (mi == NULL)
 813                 return -ENOMEM;
 814
 815         iter->priv = mi;
 816         return 0;
 817 }
 818
 819 static int
 820 iter_add_single_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
 821 {
 822         u64 cost;
 823         struct mem_info *mi = iter->priv;
 824         struct hists *hists = evsel__hists(iter->evsel);
 825         struct perf_sample *sample = iter->sample;
 826         struct hist_entry *he;
 827
 828         if (mi == NULL)
 829                 return -EINVAL;
 830
 831         cost = sample->weight;
 832         if (!cost)
 833                 cost = 1;
 834
 835         /*
 836          * must pass period=weight in order to get the correct
 837          * sorting from hists__collapse_resort() which is solely
 838          * based on periods. We want sorting be done on nr_events * weight
 839          * and this is indirectly achieved by passing period=weight here
 840          * and the he_stat__add_period() function.
 841          */
 842         sample->period = cost;
 843
 844         he = hists__add_entry(hists, al, iter->parent, NULL, mi,
 845                               sample, true);
 846         if (!he)
 847                 return -ENOMEM;
 848
 849         iter->he = he;
 850         return 0;
 851 }
 852
 853 static int
 854 iter_finish_mem_entry(struct hist_entry_iter *iter,
 855                       struct addr_location *al __maybe_unused)
 856 {
 857         struct evsel *evsel = iter->evsel;
 858         struct hists *hists = evsel__hists(evsel);
 859         struct hist_entry *he = iter->he;
 860         int err = -EINVAL;
 861
 862         if (he == NULL)
 863                 goto out;
 864
 865         hists__inc_nr_samples(hists, he->filtered);
 866
 867         err = hist_entry__append_callchain(he, iter->sample);
 868
 869 out:
 870         /*
 871          * We don't need to free iter->priv (mem_info) here since the mem info
 872          * was either already freed in hists__findnew_entry() or passed to a
 873          * new hist entry by hist_entry__new().
 874          */
 875         iter->priv = NULL;
 876
 877         iter->he = NULL;
 878         return err;
 879 }
 880
 881 static int
 882 iter_prepare_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
 883 {
 884         struct branch_info *bi;
 885         struct perf_sample *sample = iter->sample;
 886
 887         bi = sample__resolve_bstack(sample, al);
 888         if (!bi)
 889                 return -ENOMEM;
 890
 891         iter->curr = 0;
 892         iter->total = sample->branch_stack->nr;
 893
 894         iter->priv = bi;
 895         return 0;
 896 }
 897
 898 static int
 899 iter_add_single_branch_entry(struct hist_entry_iter *iter __maybe_unused,
 900                              struct addr_location *al __maybe_unused)
 901 {
 902         return 0;
 903 }
 904
 905 static int
 906 iter_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
 907 {
 908         struct branch_info *bi = iter->priv;
 909         int i = iter->curr;
 910
 911         if (bi == NULL)
 912                 return 0;
 913
 914         if (iter->curr >= iter->total)
 915                 return 0;
 916
 917         al->maps = bi[i].to.ms.maps;
 918         al->map = bi[i].to.ms.map;
 919         al->sym = bi[i].to.ms.sym;
 920         al->addr = bi[i].to.addr;
 921         return 1;
 922 }
 923
 924 static int
 925 iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
 926 {
 927         struct branch_info *bi;
 928         struct evsel *evsel = iter->evsel;
 929         struct hists *hists = evsel__hists(evsel);
 930         struct perf_sample *sample = iter->sample;
 931         struct hist_entry *he = NULL;
 932         int i = iter->curr;
 933         int err = 0;
 934
 935         bi = iter->priv;
 936
 937         if (iter->hide_unresolved && !(bi[i].from.ms.sym && bi[i].to.ms.sym))
 938                 goto out;
 939
 940         /*
 941          * The report shows the percentage of total branches captured
 942          * and not events sampled. Thus we use a pseudo period of 1.
 943          */
 944         sample->period = 1;
 945         sample->weight = bi->flags.cycles ? bi->flags.cycles : 1;
 946
 947         he = hists__add_entry(hists, al, iter->parent, &bi[i], NULL,
 948                               sample, true);
 949         if (he == NULL)
 950                 return -ENOMEM;
 951
 952         hists__inc_nr_samples(hists, he->filtered);
 953
 954 out:
 955         iter->he = he;
 956         iter->curr++;
 957         return err;
 958 }
 959
 960 static int
 961 iter_finish_branch_entry(struct hist_entry_iter *iter,
 962                          struct addr_location *al __maybe_unused)
 963 {
 964         zfree(&iter->priv);
 965         iter->he = NULL;
 966
 967         return iter->curr >= iter->total ? 0 : -1;
 968 }
 969
 970 static int
 971 iter_prepare_normal_entry(struct hist_entry_iter *iter __maybe_unused,
 972                           struct addr_location *al __maybe_unused)
 973 {
 974         return 0;
 975 }
 976
 977 static int
 978 iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location *al)
 979 {
 980         struct evsel *evsel = iter->evsel;
 981         struct perf_sample *sample = iter->sample;
 982         struct hist_entry *he;
 983
 984         he = hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
 985                               sample, true);
 986         if (he == NULL)
 987                 return -ENOMEM;
 988
 989         iter->he = he;
 990         return 0;
 991 }
 992
 993 static int
 994 iter_finish_normal_entry(struct hist_entry_iter *iter,
 995                          struct addr_location *al __maybe_unused)
 996 {
 997         struct hist_entry *he = iter->he;
 998         struct evsel *evsel = iter->evsel;
 999         struct perf_sample *sample = iter->sample;
1000
1001         if (he == NULL)
1002                 return 0;
1003
1004         iter->he = NULL;
1005
1006         hists__inc_nr_samples(evsel__hists(evsel), he->filtered);
1007
1008         return hist_entry__append_callchain(he, sample);
1009 }
1010
1011 static int
1012 iter_prepare_cumulative_entry(struct hist_entry_iter *iter,
1013                               struct addr_location *al __maybe_unused)
1014 {
1015         struct hist_entry **he_cache;
1016
1017         callchain_cursor_commit(&callchain_cursor);
1018
1019         /*
1020          * This is for detecting cycles or recursions so that they're
1021          * cumulated only one time to prevent entries more than 100%
1022          * overhead.
1023          */
1024         he_cache = malloc(sizeof(*he_cache) * (callchain_cursor.nr + 1));
1025         if (he_cache == NULL)
1026                 return -ENOMEM;
1027
1028         iter->priv = he_cache;
1029         iter->curr = 0;
1030
1031         return 0;
1032 }
1033
1034 static int
1035 iter_add_single_cumulative_entry(struct hist_entry_iter *iter,
1036                                  struct addr_location *al)
1037 {
1038         struct evsel *evsel = iter->evsel;
1039         struct hists *hists = evsel__hists(evsel);
1040         struct perf_sample *sample = iter->sample;
1041         struct hist_entry **he_cache = iter->priv;
1042         struct hist_entry *he;
1043         int err = 0;
1044
1045         he = hists__add_entry(hists, al, iter->parent, NULL, NULL,
1046                               sample, true);
1047         if (he == NULL)
1048                 return -ENOMEM;
1049
1050         iter->he = he;
1051         he_cache[iter->curr++] = he;
1052
1053         hist_entry__append_callchain(he, sample);
1054
1055         /*
1056          * We need to re-initialize the cursor since callchain_append()
1057          * advanced the cursor to the end.
1058          */
1059         callchain_cursor_commit(&callchain_cursor);
1060
1061         hists__inc_nr_samples(hists, he->filtered);
1062
1063         return err;
1064 }
1065
1066 static int
1067 iter_next_cumulative_entry(struct hist_entry_iter *iter,
1068                            struct addr_location *al)
1069 {
1070         struct callchain_cursor_node *node;
1071
1072         node = callchain_cursor_current(&callchain_cursor);
1073         if (node == NULL)
1074                 return 0;
1075
1076         return fill_callchain_info(al, node, iter->hide_unresolved);
1077 }
1078
1079 static bool
1080 hist_entry__fast__sym_diff(struct hist_entry *left,
1081                            struct hist_entry *right)
1082 {
1083         struct symbol *sym_l = left->ms.sym;
1084         struct symbol *sym_r = right->ms.sym;
1085
1086         if (!sym_l && !sym_r)
1087                 return left->ip != right->ip;
1088
1089         return !!_sort__sym_cmp(sym_l, sym_r);
1090 }
1091
1092
1093 static int
1094 iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
1095                                struct addr_location *al)
1096 {
1097         struct evsel *evsel = iter->evsel;
1098         struct perf_sample *sample = iter->sample;
1099         struct hist_entry **he_cache = iter->priv;
1100         struct hist_entry *he;
1101         struct hist_entry he_tmp = {
1102                 .hists = evsel__hists(evsel),
1103                 .cpu = al->cpu,
1104                 .thread = al->thread,
1105                 .comm = thread__comm(al->thread),
1106                 .ip = al->addr,
1107                 .ms = {
1108                         .maps = al->maps,
1109                         .map = al->map,
1110                         .sym = al->sym,
1111                 },
1112                 .srcline = (char *) al->srcline,
1113                 .parent = iter->parent,
1114                 .raw_data = sample->raw_data,
1115                 .raw_size = sample->raw_size,
1116         };
1117         int i;
1118         struct callchain_cursor cursor;
1119         bool fast = hists__has(he_tmp.hists, sym);
1120
1121         callchain_cursor_snapshot(&cursor, &callchain_cursor);
1122
1123         callchain_cursor_advance(&callchain_cursor);
1124
1125         /*
1126          * Check if there's duplicate entries in the callchain.
1127          * It's possible that it has cycles or recursive calls.
1128          */
1129         for (i = 0; i < iter->curr; i++) {
1130                 /*
1131                  * For most cases, there are no duplicate entries in callchain.
1132                  * The symbols are usually different. Do a quick check for
1133                  * symbols first.
1134                  */
1135                 if (fast && hist_entry__fast__sym_diff(he_cache[i], &he_tmp))
1136                         continue;
1137
1138                 if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) {
1139                         /* to avoid calling callback function */
1140                         iter->he = NULL;
1141                         return 0;
1142                 }
1143         }
1144
1145         he = hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
1146                               sample, false);
1147         if (he == NULL)
1148                 return -ENOMEM;
1149
1150         iter->he = he;
1151         he_cache[iter->curr++] = he;
1152
1153         if (hist_entry__has_callchains(he) && symbol_conf.use_callchain)
1154                 callchain_append(he->callchain, &cursor, sample->period);
1155         return 0;
1156 }
1157
1158 static int
1159 iter_finish_cumulative_entry(struct hist_entry_iter *iter,
1160                              struct addr_location *al __maybe_unused)
1161 {
1162         zfree(&iter->priv);
1163         iter->he = NULL;
1164
1165         return 0;
1166 }
1167
1168 const struct hist_iter_ops hist_iter_mem = {
1169         .prepare_entry          = iter_prepare_mem_entry,
1170         .add_single_entry       = iter_add_single_mem_entry,
1171         .next_entry             = iter_next_nop_entry,
1172         .add_next_entry         = iter_add_next_nop_entry,
1173         .finish_entry           = iter_finish_mem_entry,
1174 };
1175
1176 const struct hist_iter_ops hist_iter_branch = {
1177         .prepare_entry          = iter_prepare_branch_entry,
1178         .add_single_entry       = iter_add_single_branch_entry,
1179         .next_entry             = iter_next_branch_entry,
1180         .add_next_entry         = iter_add_next_branch_entry,
1181         .finish_entry           = iter_finish_branch_entry,
1182 };
1183
1184 const struct hist_iter_ops hist_iter_normal = {
1185         .prepare_entry          = iter_prepare_normal_entry,
1186         .add_single_entry       = iter_add_single_normal_entry,
1187         .next_entry             = iter_next_nop_entry,
1188         .add_next_entry         = iter_add_next_nop_entry,
1189         .finish_entry           = iter_finish_normal_entry,
1190 };
1191
1192 const struct hist_iter_ops hist_iter_cumulative = {
1193         .prepare_entry          = iter_prepare_cumulative_entry,
1194         .add_single_entry       = iter_add_single_cumulative_entry,
1195         .next_entry             = iter_next_cumulative_entry,
1196         .add_next_entry         = iter_add_next_cumulative_entry,
1197         .finish_entry           = iter_finish_cumulative_entry,
1198 };
1199
1200 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
1201                          int max_stack_depth, void *arg)
1202 {
1203         int err, err2;
1204         struct map *alm = NULL;
1205
1206         if (al)
1207                 alm = map__get(al->map);
1208
1209         err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent,
1210                                         iter->evsel, al, max_stack_depth);
1211         if (err) {
1212                 map__put(alm);
1213                 return err;
1214         }
1215
1216         err = iter->ops->prepare_entry(iter, al);
1217         if (err)
1218                 goto out;
1219
1220         err = iter->ops->add_single_entry(iter, al);
1221         if (err)
1222                 goto out;
1223
1224         if (iter->he && iter->add_entry_cb) {
1225                 err = iter->add_entry_cb(iter, al, true, arg);
1226                 if (err)
1227                         goto out;
1228         }
1229
1230         while (iter->ops->next_entry(iter, al)) {
1231                 err = iter->ops->add_next_entry(iter, al);
1232                 if (err)
1233                         break;
1234
1235                 if (iter->he && iter->add_entry_cb) {
1236                         err = iter->add_entry_cb(iter, al, false, arg);
1237                         if (err)
1238                                 goto out;
1239                 }
1240         }
1241
1242 out:
1243         err2 = iter->ops->finish_entry(iter, al);
1244         if (!err)
1245                 err = err2;
1246
1247         map__put(alm);
1248
1249         return err;
1250 }
1251
1252 int64_t
1253 hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
1254 {
1255         struct hists *hists = left->hists;
1256         struct perf_hpp_fmt *fmt;
1257         int64_t cmp = 0;
1258
1259         hists__for_each_sort_list(hists, fmt) {
1260                 if (perf_hpp__is_dynamic_entry(fmt) &&
1261                     !perf_hpp__defined_dynamic_entry(fmt, hists))
1262                         continue;
1263
1264                 cmp = fmt->cmp(fmt, left, right);
1265                 if (cmp)
1266                         break;
1267         }
1268
1269         return cmp;
1270 }
1271
1272 int64_t
1273 hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
1274 {
1275         struct hists *hists = left->hists;
1276         struct perf_hpp_fmt *fmt;
1277         int64_t cmp = 0;
1278
1279         hists__for_each_sort_list(hists, fmt) {
1280                 if (perf_hpp__is_dynamic_entry(fmt) &&
1281                     !perf_hpp__defined_dynamic_entry(fmt, hists))
1282                         continue;
1283
1284                 cmp = fmt->collapse(fmt, left, right);
1285                 if (cmp)
1286                         break;
1287         }
1288
1289         return cmp;
1290 }
1291
1292 void hist_entry__delete(struct hist_entry *he)
1293 {
1294         struct hist_entry_ops *ops = he->ops;
1295
1296         thread__zput(he->thread);
1297         map__zput(he->ms.map);
1298
1299         if (he->branch_info) {
1300                 map__zput(he->branch_info->from.ms.map);
1301                 map__zput(he->branch_info->to.ms.map);
1302                 free_srcline(he->branch_info->srcline_from);
1303                 free_srcline(he->branch_info->srcline_to);
1304                 zfree(&he->branch_info);
1305         }
1306
1307         if (he->mem_info) {
1308                 map__zput(he->mem_info->iaddr.ms.map);
1309                 map__zput(he->mem_info->daddr.ms.map);
1310                 mem_info__zput(he->mem_info);
1311         }
1312
1313         if (he->block_info)
1314                 block_info__zput(he->block_info);
1315
1316         zfree(&he->res_samples);
1317         zfree(&he->stat_acc);
1318         free_srcline(he->srcline);
1319         if (he->srcfile && he->srcfile[0])
1320                 zfree(&he->srcfile);
1321         free_callchain(he->callchain);
1322         zfree(&he->trace_output);
1323         zfree(&he->raw_data);
1324         ops->free(he);
1325 }
1326
1327 /*
1328  * If this is not the last column, then we need to pad it according to the
1329  * pre-calculated max length for this column, otherwise don't bother adding
1330  * spaces because that would break viewing this with, for instance, 'less',
1331  * that would show tons of trailing spaces when a long C++ demangled method
1332  * names is sampled.
1333 */
1334 int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
1335                                    struct perf_hpp_fmt *fmt, int printed)
1336 {
1337         if (!list_is_last(&fmt->list, &he->hists->hpp_list->fields)) {
1338                 const int width = fmt->width(fmt, hpp, he->hists);
1339                 if (printed < width) {
1340                         advance_hpp(hpp, printed);
1341                         printed = scnprintf(hpp->buf, hpp->size, "%-*s", width - printed, " ");
1342                 }
1343         }
1344
1345         return printed;
1346 }
1347
1348 /*
1349  * collapse the histogram
1350  */
1351
1352 static void hists__apply_filters(struct hists *hists, struct hist_entry *he);
1353 static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *he,
1354                                        enum hist_filter type);
1355
1356 typedef bool (*fmt_chk_fn)(struct perf_hpp_fmt *fmt);
1357
1358 static bool check_thread_entry(struct perf_hpp_fmt *fmt)
1359 {
1360         return perf_hpp__is_thread_entry(fmt) || perf_hpp__is_comm_entry(fmt);
1361 }
1362
1363 static void hist_entry__check_and_remove_filter(struct hist_entry *he,
1364                                                 enum hist_filter type,
1365                                                 fmt_chk_fn check)
1366 {
1367         struct perf_hpp_fmt *fmt;
1368         bool type_match = false;
1369         struct hist_entry *parent = he->parent_he;
1370
1371         switch (type) {
1372         case HIST_FILTER__THREAD:
1373                 if (symbol_conf.comm_list == NULL &&
1374                     symbol_conf.pid_list == NULL &&
1375                     symbol_conf.tid_list == NULL)
1376                         return;
1377                 break;
1378         case HIST_FILTER__DSO:
1379                 if (symbol_conf.dso_list == NULL)
1380                         return;
1381                 break;
1382         case HIST_FILTER__SYMBOL:
1383                 if (symbol_conf.sym_list == NULL)
1384                         return;
1385                 break;
1386         case HIST_FILTER__PARENT:
1387         case HIST_FILTER__GUEST:
1388         case HIST_FILTER__HOST:
1389         case HIST_FILTER__SOCKET:
1390         case HIST_FILTER__C2C:
1391         default:
1392                 return;
1393         }
1394
1395         /* if it's filtered by own fmt, it has to have filter bits */
1396         perf_hpp_list__for_each_format(he->hpp_list, fmt) {
1397                 if (check(fmt)) {
1398                         type_match = true;
1399                         break;
1400                 }
1401         }
1402
1403         if (type_match) {
1404                 /*
1405                  * If the filter is for current level entry, propagate
1406                  * filter marker to parents.  The marker bit was
1407                  * already set by default so it only needs to clear
1408                  * non-filtered entries.
1409                  */
1410                 if (!(he->filtered & (1 << type))) {
1411                         while (parent) {
1412                                 parent->filtered &= ~(1 << type);
1413                                 parent = parent->parent_he;
1414                         }
1415                 }
1416         } else {
1417                 /*
1418                  * If current entry doesn't have matching formats, set
1419                  * filter marker for upper level entries.  it will be
1420                  * cleared if its lower level entries is not filtered.
1421                  *
1422                  * For lower-level entries, it inherits parent's
1423                  * filter bit so that lower level entries of a
1424                  * non-filtered entry won't set the filter marker.
1425                  */
1426                 if (parent == NULL)
1427                         he->filtered |= (1 << type);
1428                 else
1429                         he->filtered |= (parent->filtered & (1 << type));
1430         }
1431 }
1432
1433 static void hist_entry__apply_hierarchy_filters(struct hist_entry *he)
1434 {
1435         hist_entry__check_and_remove_filter(he, HIST_FILTER__THREAD,
1436                                             check_thread_entry);
1437
1438         hist_entry__check_and_remove_filter(he, HIST_FILTER__DSO,
1439                                             perf_hpp__is_dso_entry);
1440
1441         hist_entry__check_and_remove_filter(he, HIST_FILTER__SYMBOL,
1442                                             perf_hpp__is_sym_entry);
1443
1444         hists__apply_filters(he->hists, he);
1445 }
1446
1447 static struct hist_entry *hierarchy_insert_entry(struct hists *hists,
1448                                                  struct rb_root_cached *root,
1449                                                  struct hist_entry *he,
1450                                                  struct hist_entry *parent_he,
1451                                                  struct perf_hpp_list *hpp_list)
1452 {
1453         struct rb_node **p = &root->rb_root.rb_node;
1454         struct rb_node *parent = NULL;
1455         struct hist_entry *iter, *new;
1456         struct perf_hpp_fmt *fmt;
1457         int64_t cmp;
1458         bool leftmost = true;
1459
1460         while (*p != NULL) {
1461                 parent = *p;
1462                 iter = rb_entry(parent, struct hist_entry, rb_node_in);
1463
1464                 cmp = 0;
1465                 perf_hpp_list__for_each_sort_list(hpp_list, fmt) {
1466                         cmp = fmt->collapse(fmt, iter, he);
1467                         if (cmp)
1468                                 break;
1469                 }
1470
1471                 if (!cmp) {
1472                         he_stat__add_stat(&iter->stat, &he->stat);
1473                         return iter;
1474                 }
1475
1476                 if (cmp < 0)
1477                         p = &parent->rb_left;
1478                 else {
1479                         p = &parent->rb_right;
1480                         leftmost = false;
1481                 }
1482         }
1483
1484         new = hist_entry__new(he, true);
1485         if (new == NULL)
1486                 return NULL;
1487
1488         hists->nr_entries++;
1489
1490         /* save related format list for output */
1491         new->hpp_list = hpp_list;
1492         new->parent_he = parent_he;
1493
1494         hist_entry__apply_hierarchy_filters(new);
1495
1496         /* some fields are now passed to 'new' */
1497         perf_hpp_list__for_each_sort_list(hpp_list, fmt) {
1498                 if (perf_hpp__is_trace_entry(fmt) || perf_hpp__is_dynamic_entry(fmt))
1499                         he->trace_output = NULL;
1500                 else
1501                         new->trace_output = NULL;
1502
1503                 if (perf_hpp__is_srcline_entry(fmt))
1504                         he->srcline = NULL;
1505                 else
1506                         new->srcline = NULL;
1507
1508                 if (perf_hpp__is_srcfile_entry(fmt))
1509                         he->srcfile = NULL;
1510                 else
1511                         new->srcfile = NULL;
1512         }
1513
1514         rb_link_node(&new->rb_node_in, parent, p);
1515         rb_insert_color_cached(&new->rb_node_in, root, leftmost);
1516         return new;
1517 }
1518
1519 static int hists__hierarchy_insert_entry(struct hists *hists,
1520                                          struct rb_root_cached *root,
1521                                          struct hist_entry *he)
1522 {
1523         struct perf_hpp_list_node *node;
1524         struct hist_entry *new_he = NULL;
1525         struct hist_entry *parent = NULL;
1526         int depth = 0;
1527         int ret = 0;
1528
1529         list_for_each_entry(node, &hists->hpp_formats, list) {
1530                 /* skip period (overhead) and elided columns */
1531                 if (node->level == 0 || node->skip)
1532                         continue;
1533
1534                 /* insert copy of 'he' for each fmt into the hierarchy */
1535                 new_he = hierarchy_insert_entry(hists, root, he, parent, &node->hpp);
1536                 if (new_he == NULL) {
1537                         ret = -1;
1538                         break;
1539                 }
1540
1541                 root = &new_he->hroot_in;
1542                 new_he->depth = depth++;
1543                 parent = new_he;
1544         }
1545
1546         if (new_he) {
1547                 new_he->leaf = true;
1548
1549                 if (hist_entry__has_callchains(new_he) &&
1550                     symbol_conf.use_callchain) {
1551                         callchain_cursor_reset(&callchain_cursor);
1552                         if (callchain_merge(&callchain_cursor,
1553                                             new_he->callchain,
1554                                             he->callchain) < 0)
1555                                 ret = -1;
1556                 }
1557         }
1558
1559         /* 'he' is no longer used */
1560         hist_entry__delete(he);
1561
1562         /* return 0 (or -1) since it already applied filters */
1563         return ret;
1564 }
1565
1566 static int hists__collapse_insert_entry(struct hists *hists,
1567                                         struct rb_root_cached *root,
1568                                         struct hist_entry *he)
1569 {
1570         struct rb_node **p = &root->rb_root.rb_node;
1571         struct rb_node *parent = NULL;
1572         struct hist_entry *iter;
1573         int64_t cmp;
1574         bool leftmost = true;
1575
1576         if (symbol_conf.report_hierarchy)
1577                 return hists__hierarchy_insert_entry(hists, root, he);
1578
1579         while (*p != NULL) {
1580                 parent = *p;
1581                 iter = rb_entry(parent, struct hist_entry, rb_node_in);
1582
1583                 cmp = hist_entry__collapse(iter, he);
1584
1585                 if (!cmp) {
1586                         int ret = 0;
1587
1588                         he_stat__add_stat(&iter->stat, &he->stat);
1589                         if (symbol_conf.cumulate_callchain)
1590                                 he_stat__add_stat(iter->stat_acc, he->stat_acc);
1591
1592                         if (hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
1593                                 callchain_cursor_reset(&callchain_cursor);
1594                                 if (callchain_merge(&callchain_cursor,
1595                                                     iter->callchain,
1596                                                     he->callchain) < 0)
1597                                         ret = -1;
1598                         }
1599                         hist_entry__delete(he);
1600                         return ret;
1601                 }
1602
1603                 if (cmp < 0)
1604                         p = &(*p)->rb_left;
1605                 else {
1606                         p = &(*p)->rb_right;
1607                         leftmost = false;
1608                 }
1609         }
1610         hists->nr_entries++;
1611
1612         rb_link_node(&he->rb_node_in, parent, p);
1613         rb_insert_color_cached(&he->rb_node_in, root, leftmost);
1614         return 1;
1615 }
1616
1617 struct rb_root_cached *hists__get_rotate_entries_in(struct hists *hists)
1618 {
1619         struct rb_root_cached *root;
1620
1621         pthread_mutex_lock(&hists->lock);
1622
1623         root = hists->entries_in;
1624         if (++hists->entries_in > &hists->entries_in_array[1])
1625                 hists->entries_in = &hists->entries_in_array[0];
1626
1627         pthread_mutex_unlock(&hists->lock);
1628
1629         return root;
1630 }
1631
1632 static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
1633 {
1634         hists__filter_entry_by_dso(hists, he);
1635         hists__filter_entry_by_thread(hists, he);
1636         hists__filter_entry_by_symbol(hists, he);
1637         hists__filter_entry_by_socket(hists, he);
1638 }
1639
1640 int hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
1641 {
1642         struct rb_root_cached *root;
1643         struct rb_node *next;
1644         struct hist_entry *n;
1645         int ret;
1646
1647         if (!hists__has(hists, need_collapse))
1648                 return 0;
1649
1650         hists->nr_entries = 0;
1651
1652         root = hists__get_rotate_entries_in(hists);
1653
1654         next = rb_first_cached(root);
1655
1656         while (next) {
1657                 if (session_done())
1658                         break;
1659                 n = rb_entry(next, struct hist_entry, rb_node_in);
1660                 next = rb_next(&n->rb_node_in);
1661
1662                 rb_erase_cached(&n->rb_node_in, root);
1663                 ret = hists__collapse_insert_entry(hists, &hists->entries_collapsed, n);
1664                 if (ret < 0)
1665                         return -1;
1666
1667                 if (ret) {
1668                         /*
1669                          * If it wasn't combined with one of the entries already
1670                          * collapsed, we need to apply the filters that may have
1671                          * been set by, say, the hist_browser.
1672                          */
1673                         hists__apply_filters(hists, n);
1674                 }
1675                 if (prog)
1676                         ui_progress__update(prog, 1);
1677         }
1678         return 0;
1679 }
1680
1681 static int64_t hist_entry__sort(struct hist_entry *a, struct hist_entry *b)
1682 {
1683         struct hists *hists = a->hists;
1684         struct perf_hpp_fmt *fmt;
1685         int64_t cmp = 0;
1686
1687         hists__for_each_sort_list(hists, fmt) {
1688                 if (perf_hpp__should_skip(fmt, a->hists))
1689                         continue;
1690
1691                 cmp = fmt->sort(fmt, a, b);
1692                 if (cmp)
1693                         break;
1694         }
1695
1696         return cmp;
1697 }
1698
1699 static void hists__reset_filter_stats(struct hists *hists)
1700 {
1701         hists->nr_non_filtered_entries = 0;
1702         hists->stats.total_non_filtered_period = 0;
1703 }
1704
1705 void hists__reset_stats(struct hists *hists)
1706 {
1707         hists->nr_entries = 0;
1708         hists->stats.total_period = 0;
1709
1710         hists__reset_filter_stats(hists);
1711 }
1712
1713 static void hists__inc_filter_stats(struct hists *hists, struct hist_entry *h)
1714 {
1715         hists->nr_non_filtered_entries++;
1716         hists->stats.total_non_filtered_period += h->stat.period;
1717 }
1718
1719 void hists__inc_stats(struct hists *hists, struct hist_entry *h)
1720 {
1721         if (!h->filtered)
1722                 hists__inc_filter_stats(hists, h);
1723
1724         hists->nr_entries++;
1725         hists->stats.total_period += h->stat.period;
1726 }
1727
1728 static void hierarchy_recalc_total_periods(struct hists *hists)
1729 {
1730         struct rb_node *node;
1731         struct hist_entry *he;
1732
1733         node = rb_first_cached(&hists->entries);
1734
1735         hists->stats.total_period = 0;
1736         hists->stats.total_non_filtered_period = 0;
1737
1738         /*
1739          * recalculate total period using top-level entries only
1740          * since lower level entries only see non-filtered entries
1741          * but upper level entries have sum of both entries.
1742          */
1743         while (node) {
1744                 he = rb_entry(node, struct hist_entry, rb_node);
1745                 node = rb_next(node);
1746
1747                 hists->stats.total_period += he->stat.period;
1748                 if (!he->filtered)
1749                         hists->stats.total_non_filtered_period += he->stat.period;
1750         }
1751 }
1752
1753 static void hierarchy_insert_output_entry(struct rb_root_cached *root,
1754                                           struct hist_entry *he)
1755 {
1756         struct rb_node **p = &root->rb_root.rb_node;
1757         struct rb_node *parent = NULL;
1758         struct hist_entry *iter;
1759         struct perf_hpp_fmt *fmt;
1760         bool leftmost = true;
1761
1762         while (*p != NULL) {
1763                 parent = *p;
1764                 iter = rb_entry(parent, struct hist_entry, rb_node);
1765
1766                 if (hist_entry__sort(he, iter) > 0)
1767                         p = &parent->rb_left;
1768                 else {
1769                         p = &parent->rb_right;
1770                         leftmost = false;
1771                 }
1772         }
1773
1774         rb_link_node(&he->rb_node, parent, p);
1775         rb_insert_color_cached(&he->rb_node, root, leftmost);
1776
1777         /* update column width of dynamic entry */
1778         perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) {
1779                 if (perf_hpp__is_dynamic_entry(fmt))
1780                         fmt->sort(fmt, he, NULL);
1781         }
1782 }
1783
1784 static void hists__hierarchy_output_resort(struct hists *hists,
1785                                            struct ui_progress *prog,
1786                                            struct rb_root_cached *root_in,
1787                                            struct rb_root_cached *root_out,
1788                                            u64 min_callchain_hits,
1789                                            bool use_callchain)
1790 {
1791         struct rb_node *node;
1792         struct hist_entry *he;
1793
1794         *root_out = RB_ROOT_CACHED;
1795         node = rb_first_cached(root_in);
1796
1797         while (node) {
1798                 he = rb_entry(node, struct hist_entry, rb_node_in);
1799                 node = rb_next(node);
1800
1801                 hierarchy_insert_output_entry(root_out, he);
1802
1803                 if (prog)
1804                         ui_progress__update(prog, 1);
1805
1806                 hists->nr_entries++;
1807                 if (!he->filtered) {
1808                         hists->nr_non_filtered_entries++;
1809                         hists__calc_col_len(hists, he);
1810                 }
1811
1812                 if (!he->leaf) {
1813                         hists__hierarchy_output_resort(hists, prog,
1814                                                        &he->hroot_in,
1815                                                        &he->hroot_out,
1816                                                        min_callchain_hits,
1817                                                        use_callchain);
1818                         continue;
1819                 }
1820
1821                 if (!use_callchain)
1822                         continue;
1823
1824                 if (callchain_param.mode == CHAIN_GRAPH_REL) {
1825                         u64 total = he->stat.period;
1826
1827                         if (symbol_conf.cumulate_callchain)
1828                                 total = he->stat_acc->period;
1829
1830                         min_callchain_hits = total * (callchain_param.min_percent / 100);
1831                 }
1832
1833                 callchain_param.sort(&he->sorted_chain, he->callchain,
1834                                      min_callchain_hits, &callchain_param);
1835         }
1836 }
1837
1838 static void __hists__insert_output_entry(struct rb_root_cached *entries,
1839                                          struct hist_entry *he,
1840                                          u64 min_callchain_hits,
1841                                          bool use_callchain)
1842 {
1843         struct rb_node **p = &entries->rb_root.rb_node;
1844         struct rb_node *parent = NULL;
1845         struct hist_entry *iter;
1846         struct perf_hpp_fmt *fmt;
1847         bool leftmost = true;
1848
1849         if (use_callchain) {
1850                 if (callchain_param.mode == CHAIN_GRAPH_REL) {
1851                         u64 total = he->stat.period;
1852
1853                         if (symbol_conf.cumulate_callchain)
1854                                 total = he->stat_acc->period;
1855
1856                         min_callchain_hits = total * (callchain_param.min_percent / 100);
1857                 }
1858                 callchain_param.sort(&he->sorted_chain, he->callchain,
1859                                       min_callchain_hits, &callchain_param);
1860         }
1861
1862         while (*p != NULL) {
1863                 parent = *p;
1864                 iter = rb_entry(parent, struct hist_entry, rb_node);
1865
1866                 if (hist_entry__sort(he, iter) > 0)
1867                         p = &(*p)->rb_left;
1868                 else {
1869                         p = &(*p)->rb_right;
1870                         leftmost = false;
1871                 }
1872         }
1873
1874         rb_link_node(&he->rb_node, parent, p);
1875         rb_insert_color_cached(&he->rb_node, entries, leftmost);
1876
1877         perf_hpp_list__for_each_sort_list(&perf_hpp_list, fmt) {
1878                 if (perf_hpp__is_dynamic_entry(fmt) &&
1879                     perf_hpp__defined_dynamic_entry(fmt, he->hists))
1880                         fmt->sort(fmt, he, NULL);  /* update column width */
1881         }
1882 }
1883
1884 static void output_resort(struct hists *hists, struct ui_progress *prog,
1885                           bool use_callchain, hists__resort_cb_t cb,
1886                           void *cb_arg)
1887 {
1888         struct rb_root_cached *root;
1889         struct rb_node *next;
1890         struct hist_entry *n;
1891         u64 callchain_total;
1892         u64 min_callchain_hits;
1893
1894         callchain_total = hists->callchain_period;
1895         if (symbol_conf.filter_relative)
1896                 callchain_total = hists->callchain_non_filtered_period;
1897
1898         min_callchain_hits = callchain_total * (callchain_param.min_percent / 100);
1899
1900         hists__reset_stats(hists);
1901         hists__reset_col_len(hists);
1902
1903         if (symbol_conf.report_hierarchy) {
1904                 hists__hierarchy_output_resort(hists, prog,
1905                                                &hists->entries_collapsed,
1906                                                &hists->entries,
1907                                                min_callchain_hits,
1908                                                use_callchain);
1909                 hierarchy_recalc_total_periods(hists);
1910                 return;
1911         }
1912
1913         if (hists__has(hists, need_collapse))
1914                 root = &hists->entries_collapsed;
1915         else
1916                 root = hists->entries_in;
1917
1918         next = rb_first_cached(root);
1919         hists->entries = RB_ROOT_CACHED;
1920
1921         while (next) {
1922                 n = rb_entry(next, struct hist_entry, rb_node_in);
1923                 next = rb_next(&n->rb_node_in);
1924
1925                 if (cb && cb(n, cb_arg))
1926                         continue;
1927
1928                 __hists__insert_output_entry(&hists->entries, n, min_callchain_hits, use_callchain);
1929                 hists__inc_stats(hists, n);
1930
1931                 if (!n->filtered)
1932                         hists__calc_col_len(hists, n);
1933
1934                 if (prog)
1935                         ui_progress__update(prog, 1);
1936         }
1937 }
1938
1939 void evsel__output_resort_cb(struct evsel *evsel, struct ui_progress *prog,
1940                              hists__resort_cb_t cb, void *cb_arg)
1941 {
1942         bool use_callchain;
1943
1944         if (evsel && symbol_conf.use_callchain && !symbol_conf.show_ref_callgraph)
1945                 use_callchain = evsel__has_callchain(evsel);
1946         else
1947                 use_callchain = symbol_conf.use_callchain;
1948
1949         use_callchain |= symbol_conf.show_branchflag_count;
1950
1951         output_resort(evsel__hists(evsel), prog, use_callchain, cb, cb_arg);
1952 }
1953
1954 void evsel__output_resort(struct evsel *evsel, struct ui_progress *prog)
1955 {
1956         return evsel__output_resort_cb(evsel, prog, NULL, NULL);
1957 }
1958
1959 void hists__output_resort(struct hists *hists, struct ui_progress *prog)
1960 {
1961         output_resort(hists, prog, symbol_conf.use_callchain, NULL, NULL);
1962 }
1963
1964 void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
1965                              hists__resort_cb_t cb)
1966 {
1967         output_resort(hists, prog, symbol_conf.use_callchain, cb, NULL);
1968 }
1969
1970 static bool can_goto_child(struct hist_entry *he, enum hierarchy_move_dir hmd)
1971 {
1972         if (he->leaf || hmd == HMD_FORCE_SIBLING)
1973                 return false;
1974
1975         if (he->unfolded || hmd == HMD_FORCE_CHILD)
1976                 return true;
1977
1978         return false;
1979 }
1980
1981 struct rb_node *rb_hierarchy_last(struct rb_node *node)
1982 {
1983         struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node);
1984
1985         while (can_goto_child(he, HMD_NORMAL)) {
1986                 node = rb_last(&he->hroot_out.rb_root);
1987                 he = rb_entry(node, struct hist_entry, rb_node);
1988         }
1989         return node;
1990 }
1991
1992 struct rb_node *__rb_hierarchy_next(struct rb_node *node, enum hierarchy_move_dir hmd)
1993 {
1994         struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node);
1995
1996         if (can_goto_child(he, hmd))
1997                 node = rb_first_cached(&he->hroot_out);
1998         else
1999                 node = rb_next(node);
2000
2001         while (node == NULL) {
2002                 he = he->parent_he;
2003                 if (he == NULL)
2004                         break;
2005
2006                 node = rb_next(&he->rb_node);
2007         }
2008         return node;
2009 }
2010
2011 struct rb_node *rb_hierarchy_prev(struct rb_node *node)
2012 {
2013         struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node);
2014
2015         node = rb_prev(node);
2016         if (node)
2017                 return rb_hierarchy_last(node);
2018
2019         he = he->parent_he;
2020         if (he == NULL)
2021                 return NULL;
2022
2023         return &he->rb_node;
2024 }
2025
2026 bool hist_entry__has_hierarchy_children(struct hist_entry *he, float limit)
2027 {
2028         struct rb_node *node;
2029         struct hist_entry *child;
2030         float percent;
2031
2032         if (he->leaf)
2033                 return false;
2034
2035         node = rb_first_cached(&he->hroot_out);
2036         child = rb_entry(node, struct hist_entry, rb_node);
2037
2038         while (node && child->filtered) {
2039                 node = rb_next(node);
2040                 child = rb_entry(node, struct hist_entry, rb_node);
2041         }
2042
2043         if (node)
2044                 percent = hist_entry__get_percent_limit(child);
2045         else
2046                 percent = 0;
2047
2048         return node && percent >= limit;
2049 }
2050
2051 static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h,
2052                                        enum hist_filter filter)
2053 {
2054         h->filtered &= ~(1 << filter);
2055
2056         if (symbol_conf.report_hierarchy) {
2057                 struct hist_entry *parent = h->parent_he;
2058
2059                 while (parent) {
2060                         he_stat__add_stat(&parent->stat, &h->stat);
2061
2062                         parent->filtered &= ~(1 << filter);
2063
2064                         if (parent->filtered)
2065                                 goto next;
2066
2067                         /* force fold unfiltered entry for simplicity */
2068                         parent->unfolded = false;
2069                         parent->has_no_entry = false;
2070                         parent->row_offset = 0;
2071                         parent->nr_rows = 0;
2072 next:
2073                         parent = parent->parent_he;
2074                 }
2075         }
2076
2077         if (h->filtered)
2078                 return;
2079
2080         /* force fold unfiltered entry for simplicity */
2081         h->unfolded = false;
2082         h->has_no_entry = false;
2083         h->row_offset = 0;
2084         h->nr_rows = 0;
2085
2086         hists->stats.nr_non_filtered_samples += h->stat.nr_events;
2087
2088         hists__inc_filter_stats(hists, h);
2089         hists__calc_col_len(hists, h);
2090 }
2091
2092
2093 static bool hists__filter_entry_by_dso(struct hists *hists,
2094                                        struct hist_entry *he)
2095 {
2096         if (hists->dso_filter != NULL &&
2097             (he->ms.map == NULL || he->ms.map->dso != hists->dso_filter)) {
2098                 he->filtered |= (1 << HIST_FILTER__DSO);
2099                 return true;
2100         }
2101
2102         return false;
2103 }
2104
2105 static bool hists__filter_entry_by_thread(struct hists *hists,
2106                                           struct hist_entry *he)
2107 {
2108         if (hists->thread_filter != NULL &&
2109             he->thread != hists->thread_filter) {
2110                 he->filtered |= (1 << HIST_FILTER__THREAD);
2111                 return true;
2112         }
2113
2114         return false;
2115 }
2116
2117 static bool hists__filter_entry_by_symbol(struct hists *hists,
2118                                           struct hist_entry *he)
2119 {
2120         if (hists->symbol_filter_str != NULL &&
2121             (!he->ms.sym || strstr(he->ms.sym->name,
2122                                    hists->symbol_filter_str) == NULL)) {
2123                 he->filtered |= (1 << HIST_FILTER__SYMBOL);
2124                 return true;
2125         }
2126
2127         return false;
2128 }
2129
2130 static bool hists__filter_entry_by_socket(struct hists *hists,
2131                                           struct hist_entry *he)
2132 {
2133         if ((hists->socket_filter > -1) &&
2134             (he->socket != hists->socket_filter)) {
2135                 he->filtered |= (1 << HIST_FILTER__SOCKET);
2136                 return true;
2137         }
2138
2139         return false;
2140 }
2141
2142 typedef bool (*filter_fn_t)(struct hists *hists, struct hist_entry *he);
2143
2144 static void hists__filter_by_type(struct hists *hists, int type, filter_fn_t filter)
2145 {
2146         struct rb_node *nd;
2147
2148         hists->stats.nr_non_filtered_samples = 0;
2149
2150         hists__reset_filter_stats(hists);
2151         hists__reset_col_len(hists);
2152
2153         for (nd = rb_first_cached(&hists->entries); nd; nd = rb_next(nd)) {
2154                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2155
2156                 if (filter(hists, h))
2157                         continue;
2158
2159                 hists__remove_entry_filter(hists, h, type);
2160         }
2161 }
2162
2163 static void resort_filtered_entry(struct rb_root_cached *root,
2164                                   struct hist_entry *he)
2165 {
2166         struct rb_node **p = &root->rb_root.rb_node;
2167         struct rb_node *parent = NULL;
2168         struct hist_entry *iter;
2169         struct rb_root_cached new_root = RB_ROOT_CACHED;
2170         struct rb_node *nd;
2171         bool leftmost = true;
2172
2173         while (*p != NULL) {
2174                 parent = *p;
2175                 iter = rb_entry(parent, struct hist_entry, rb_node);
2176
2177                 if (hist_entry__sort(he, iter) > 0)
2178                         p = &(*p)->rb_left;
2179                 else {
2180                         p = &(*p)->rb_right;
2181                         leftmost = false;
2182                 }
2183         }
2184
2185         rb_link_node(&he->rb_node, parent, p);
2186         rb_insert_color_cached(&he->rb_node, root, leftmost);
2187
2188         if (he->leaf || he->filtered)
2189                 return;
2190
2191         nd = rb_first_cached(&he->hroot_out);
2192         while (nd) {
2193                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2194
2195                 nd = rb_next(nd);
2196                 rb_erase_cached(&h->rb_node, &he->hroot_out);
2197
2198                 resort_filtered_entry(&new_root, h);
2199         }
2200
2201         he->hroot_out = new_root;
2202 }
2203
2204 static void hists__filter_hierarchy(struct hists *hists, int type, const void *arg)
2205 {
2206         struct rb_node *nd;
2207         struct rb_root_cached new_root = RB_ROOT_CACHED;
2208
2209         hists->stats.nr_non_filtered_samples = 0;
2210
2211         hists__reset_filter_stats(hists);
2212         hists__reset_col_len(hists);
2213
2214         nd = rb_first_cached(&hists->entries);
2215         while (nd) {
2216                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2217                 int ret;
2218
2219                 ret = hist_entry__filter(h, type, arg);
2220
2221                 /*
2222                  * case 1. non-matching type
2223                  * zero out the period, set filter marker and move to child
2224                  */
2225                 if (ret < 0) {
2226                         memset(&h->stat, 0, sizeof(h->stat));
2227                         h->filtered |= (1 << type);
2228
2229                         nd = __rb_hierarchy_next(&h->rb_node, HMD_FORCE_CHILD);
2230                 }
2231                 /*
2232                  * case 2. matched type (filter out)
2233                  * set filter marker and move to next
2234                  */
2235                 else if (ret == 1) {
2236                         h->filtered |= (1 << type);
2237
2238                         nd = __rb_hierarchy_next(&h->rb_node, HMD_FORCE_SIBLING);
2239                 }
2240                 /*
2241                  * case 3. ok (not filtered)
2242                  * add period to hists and parents, erase the filter marker
2243                  * and move to next sibling
2244                  */
2245                 else {
2246                         hists__remove_entry_filter(hists, h, type);
2247
2248                         nd = __rb_hierarchy_next(&h->rb_node, HMD_FORCE_SIBLING);
2249                 }
2250         }
2251
2252         hierarchy_recalc_total_periods(hists);
2253
2254         /*
2255          * resort output after applying a new filter since filter in a lower
2256          * hierarchy can change periods in a upper hierarchy.
2257          */
2258         nd = rb_first_cached(&hists->entries);
2259         while (nd) {
2260                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2261
2262                 nd = rb_next(nd);
2263                 rb_erase_cached(&h->rb_node, &hists->entries);
2264
2265                 resort_filtered_entry(&new_root, h);
2266         }
2267
2268         hists->entries = new_root;
2269 }
2270
2271 void hists__filter_by_thread(struct hists *hists)
2272 {
2273         if (symbol_conf.report_hierarchy)
2274                 hists__filter_hierarchy(hists, HIST_FILTER__THREAD,
2275                                         hists->thread_filter);
2276         else
2277                 hists__filter_by_type(hists, HIST_FILTER__THREAD,
2278                                       hists__filter_entry_by_thread);
2279 }
2280
2281 void hists__filter_by_dso(struct hists *hists)
2282 {
2283         if (symbol_conf.report_hierarchy)
2284                 hists__filter_hierarchy(hists, HIST_FILTER__DSO,
2285                                         hists->dso_filter);
2286         else
2287                 hists__filter_by_type(hists, HIST_FILTER__DSO,
2288                                       hists__filter_entry_by_dso);
2289 }
2290
2291 void hists__filter_by_symbol(struct hists *hists)
2292 {
2293         if (symbol_conf.report_hierarchy)
2294                 hists__filter_hierarchy(hists, HIST_FILTER__SYMBOL,
2295                                         hists->symbol_filter_str);
2296         else
2297                 hists__filter_by_type(hists, HIST_FILTER__SYMBOL,
2298                                       hists__filter_entry_by_symbol);
2299 }
2300
2301 void hists__filter_by_socket(struct hists *hists)
2302 {
2303         if (symbol_conf.report_hierarchy)
2304                 hists__filter_hierarchy(hists, HIST_FILTER__SOCKET,
2305                                         &hists->socket_filter);
2306         else
2307                 hists__filter_by_type(hists, HIST_FILTER__SOCKET,
2308                                       hists__filter_entry_by_socket);
2309 }
2310
2311 void events_stats__inc(struct events_stats *stats, u32 type)
2312 {
2313         ++stats->nr_events[0];
2314         ++stats->nr_events[type];
2315 }
2316
2317 static void hists_stats__inc(struct hists_stats *stats)
2318 {
2319         ++stats->nr_samples;
2320 }
2321
2322 void hists__inc_nr_events(struct hists *hists)
2323 {
2324         hists_stats__inc(&hists->stats);
2325 }
2326
2327 void hists__inc_nr_samples(struct hists *hists, bool filtered)
2328 {
2329         hists_stats__inc(&hists->stats);
2330         if (!filtered)
2331                 hists->stats.nr_non_filtered_samples++;
2332 }
2333
2334 static struct hist_entry *hists__add_dummy_entry(struct hists *hists,
2335                                                  struct hist_entry *pair)
2336 {
2337         struct rb_root_cached *root;
2338         struct rb_node **p;
2339         struct rb_node *parent = NULL;
2340         struct hist_entry *he;
2341         int64_t cmp;
2342         bool leftmost = true;
2343
2344         if (hists__has(hists, need_collapse))
2345                 root = &hists->entries_collapsed;
2346         else
2347                 root = hists->entries_in;
2348
2349         p = &root->rb_root.rb_node;
2350
2351         while (*p != NULL) {
2352                 parent = *p;
2353                 he = rb_entry(parent, struct hist_entry, rb_node_in);
2354
2355                 cmp = hist_entry__collapse(he, pair);
2356
2357                 if (!cmp)
2358                         goto out;
2359
2360                 if (cmp < 0)
2361                         p = &(*p)->rb_left;
2362                 else {
2363                         p = &(*p)->rb_right;
2364                         leftmost = false;
2365                 }
2366         }
2367
2368         he = hist_entry__new(pair, true);
2369         if (he) {
2370                 memset(&he->stat, 0, sizeof(he->stat));
2371                 he->hists = hists;
2372                 if (symbol_conf.cumulate_callchain)
2373                         memset(he->stat_acc, 0, sizeof(he->stat));
2374                 rb_link_node(&he->rb_node_in, parent, p);
2375                 rb_insert_color_cached(&he->rb_node_in, root, leftmost);
2376                 hists__inc_stats(hists, he);
2377                 he->dummy = true;
2378         }
2379 out:
2380         return he;
2381 }
2382
2383 static struct hist_entry *add_dummy_hierarchy_entry(struct hists *hists,
2384                                                     struct rb_root_cached *root,
2385                                                     struct hist_entry *pair)
2386 {
2387         struct rb_node **p;
2388         struct rb_node *parent = NULL;
2389         struct hist_entry *he;
2390         struct perf_hpp_fmt *fmt;
2391         bool leftmost = true;
2392
2393         p = &root->rb_root.rb_node;
2394         while (*p != NULL) {
2395                 int64_t cmp = 0;
2396
2397                 parent = *p;
2398                 he = rb_entry(parent, struct hist_entry, rb_node_in);
2399
2400                 perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) {
2401                         cmp = fmt->collapse(fmt, he, pair);
2402                         if (cmp)
2403                                 break;
2404                 }
2405                 if (!cmp)
2406                         goto out;
2407
2408                 if (cmp < 0)
2409                         p = &parent->rb_left;
2410                 else {
2411                         p = &parent->rb_right;
2412                         leftmost = false;
2413                 }
2414         }
2415
2416         he = hist_entry__new(pair, true);
2417         if (he) {
2418                 rb_link_node(&he->rb_node_in, parent, p);
2419                 rb_insert_color_cached(&he->rb_node_in, root, leftmost);
2420
2421                 he->dummy = true;
2422                 he->hists = hists;
2423                 memset(&he->stat, 0, sizeof(he->stat));
2424                 hists__inc_stats(hists, he);
2425         }
2426 out:
2427         return he;
2428 }
2429
2430 static struct hist_entry *hists__find_entry(struct hists *hists,
2431                                             struct hist_entry *he)
2432 {
2433         struct rb_node *n;
2434
2435         if (hists__has(hists, need_collapse))
2436                 n = hists->entries_collapsed.rb_root.rb_node;
2437         else
2438                 n = hists->entries_in->rb_root.rb_node;
2439
2440         while (n) {
2441                 struct hist_entry *iter = rb_entry(n, struct hist_entry, rb_node_in);
2442                 int64_t cmp = hist_entry__collapse(iter, he);
2443
2444                 if (cmp < 0)
2445                         n = n->rb_left;
2446                 else if (cmp > 0)
2447                         n = n->rb_right;
2448                 else
2449                         return iter;
2450         }
2451
2452         return NULL;
2453 }
2454
2455 static struct hist_entry *hists__find_hierarchy_entry(struct rb_root_cached *root,
2456                                                       struct hist_entry *he)
2457 {
2458         struct rb_node *n = root->rb_root.rb_node;
2459
2460         while (n) {
2461                 struct hist_entry *iter;
2462                 struct perf_hpp_fmt *fmt;
2463                 int64_t cmp = 0;
2464
2465                 iter = rb_entry(n, struct hist_entry, rb_node_in);
2466                 perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) {
2467                         cmp = fmt->collapse(fmt, iter, he);
2468                         if (cmp)
2469                                 break;
2470                 }
2471
2472                 if (cmp < 0)
2473                         n = n->rb_left;
2474                 else if (cmp > 0)
2475                         n = n->rb_right;
2476                 else
2477                         return iter;
2478         }
2479
2480         return NULL;
2481 }
2482
2483 static void hists__match_hierarchy(struct rb_root_cached *leader_root,
2484                                    struct rb_root_cached *other_root)
2485 {
2486         struct rb_node *nd;
2487         struct hist_entry *pos, *pair;
2488
2489         for (nd = rb_first_cached(leader_root); nd; nd = rb_next(nd)) {
2490                 pos  = rb_entry(nd, struct hist_entry, rb_node_in);
2491                 pair = hists__find_hierarchy_entry(other_root, pos);
2492
2493                 if (pair) {
2494                         hist_entry__add_pair(pair, pos);
2495                         hists__match_hierarchy(&pos->hroot_in, &pair->hroot_in);
2496                 }
2497         }
2498 }
2499
2500 /*
2501  * Look for pairs to link to the leader buckets (hist_entries):
2502  */
2503 void hists__match(struct hists *leader, struct hists *other)
2504 {
2505         struct rb_root_cached *root;
2506         struct rb_node *nd;
2507         struct hist_entry *pos, *pair;
2508
2509         if (symbol_conf.report_hierarchy) {
2510                 /* hierarchy report always collapses entries */
2511                 return hists__match_hierarchy(&leader->entries_collapsed,
2512                                               &other->entries_collapsed);
2513         }
2514
2515         if (hists__has(leader, need_collapse))
2516                 root = &leader->entries_collapsed;
2517         else
2518                 root = leader->entries_in;
2519
2520         for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
2521                 pos  = rb_entry(nd, struct hist_entry, rb_node_in);
2522                 pair = hists__find_entry(other, pos);
2523
2524                 if (pair)
2525                         hist_entry__add_pair(pair, pos);
2526         }
2527 }
2528
2529 static int hists__link_hierarchy(struct hists *leader_hists,
2530                                  struct hist_entry *parent,
2531                                  struct rb_root_cached *leader_root,
2532                                  struct rb_root_cached *other_root)
2533 {
2534         struct rb_node *nd;
2535         struct hist_entry *pos, *leader;
2536
2537         for (nd = rb_first_cached(other_root); nd; nd = rb_next(nd)) {
2538                 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2539
2540                 if (hist_entry__has_pairs(pos)) {
2541                         bool found = false;
2542
2543                         list_for_each_entry(leader, &pos->pairs.head, pairs.node) {
2544                                 if (leader->hists == leader_hists) {
2545                                         found = true;
2546                                         break;
2547                                 }
2548                         }
2549                         if (!found)
2550                                 return -1;
2551                 } else {
2552                         leader = add_dummy_hierarchy_entry(leader_hists,
2553                                                            leader_root, pos);
2554                         if (leader == NULL)
2555                                 return -1;
2556
2557                         /* do not point parent in the pos */
2558                         leader->parent_he = parent;
2559
2560                         hist_entry__add_pair(pos, leader);
2561                 }
2562
2563                 if (!pos->leaf) {
2564                         if (hists__link_hierarchy(leader_hists, leader,
2565                                                   &leader->hroot_in,
2566                                                   &pos->hroot_in) < 0)
2567                                 return -1;
2568                 }
2569         }
2570         return 0;
2571 }
2572
2573 /*
2574  * Look for entries in the other hists that are not present in the leader, if
2575  * we find them, just add a dummy entry on the leader hists, with period=0,
2576  * nr_events=0, to serve as the list header.
2577  */
2578 int hists__link(struct hists *leader, struct hists *other)
2579 {
2580         struct rb_root_cached *root;
2581         struct rb_node *nd;
2582         struct hist_entry *pos, *pair;
2583
2584         if (symbol_conf.report_hierarchy) {
2585                 /* hierarchy report always collapses entries */
2586                 return hists__link_hierarchy(leader, NULL,
2587                                              &leader->entries_collapsed,
2588                                              &other->entries_collapsed);
2589         }
2590
2591         if (hists__has(other, need_collapse))
2592                 root = &other->entries_collapsed;
2593         else
2594                 root = other->entries_in;
2595
2596         for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
2597                 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2598
2599                 if (!hist_entry__has_pairs(pos)) {
2600                         pair = hists__add_dummy_entry(leader, pos);
2601                         if (pair == NULL)
2602                                 return -1;
2603                         hist_entry__add_pair(pos, pair);
2604                 }
2605         }
2606
2607         return 0;
2608 }
2609
2610 int hists__unlink(struct hists *hists)
2611 {
2612         struct rb_root_cached *root;
2613         struct rb_node *nd;
2614         struct hist_entry *pos;
2615
2616         if (hists__has(hists, need_collapse))
2617                 root = &hists->entries_collapsed;
2618         else
2619                 root = hists->entries_in;
2620
2621         for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
2622                 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2623                 list_del_init(&pos->pairs.node);
2624         }
2625
2626         return 0;
2627 }
2628
2629 void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
2630                           struct perf_sample *sample, bool nonany_branch_mode,
2631                           u64 *total_cycles)
2632 {
2633         struct branch_info *bi;
2634         struct branch_entry *entries = perf_sample__branch_entries(sample);
2635
2636         /* If we have branch cycles always annotate them. */
2637         if (bs && bs->nr && entries[0].flags.cycles) {
2638                 int i;
2639
2640                 bi = sample__resolve_bstack(sample, al);
2641                 if (bi) {
2642                         struct addr_map_symbol *prev = NULL;
2643
2644                         /*
2645                          * Ignore errors, still want to process the
2646                          * other entries.
2647                          *
2648                          * For non standard branch modes always
2649                          * force no IPC (prev == NULL)
2650                          *
2651                          * Note that perf stores branches reversed from
2652                          * program order!
2653                          */
2654                         for (i = bs->nr - 1; i >= 0; i--) {
2655                                 addr_map_symbol__account_cycles(&bi[i].from,
2656                                         nonany_branch_mode ? NULL : prev,
2657                                         bi[i].flags.cycles);
2658                                 prev = &bi[i].to;
2659
2660                                 if (total_cycles)
2661                                         *total_cycles += bi[i].flags.cycles;
2662                         }
2663                         free(bi);
2664                 }
2665         }
2666 }
2667
2668 size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp,
2669                                  bool skip_empty)
2670 {
2671         struct evsel *pos;
2672         size_t ret = 0;
2673
2674         evlist__for_each_entry(evlist, pos) {
2675                 struct hists *hists = evsel__hists(pos);
2676
2677                 if (skip_empty && !hists->stats.nr_samples)
2678                         continue;
2679
2680                 ret += fprintf(fp, "%s stats:\n", evsel__name(pos));
2681                 ret += fprintf(fp, "%16s events: %10d\n",
2682                                "SAMPLE", hists->stats.nr_samples);
2683         }
2684
2685         return ret;
2686 }
2687
2688
2689 u64 hists__total_period(struct hists *hists)
2690 {
2691         return symbol_conf.filter_relative ? hists->stats.total_non_filtered_period :
2692                 hists->stats.total_period;
2693 }
2694
2695 int __hists__scnprintf_title(struct hists *hists, char *bf, size_t size, bool show_freq)
2696 {
2697         char unit;
2698         int printed;
2699         const struct dso *dso = hists->dso_filter;
2700         struct thread *thread = hists->thread_filter;
2701         int socket_id = hists->socket_filter;
2702         unsigned long nr_samples = hists->stats.nr_samples;
2703         u64 nr_events = hists->stats.total_period;
2704         struct evsel *evsel = hists_to_evsel(hists);
2705         const char *ev_name = evsel__name(evsel);
2706         char buf[512], sample_freq_str[64] = "";
2707         size_t buflen = sizeof(buf);
2708         char ref[30] = " show reference callgraph, ";
2709         bool enable_ref = false;
2710
2711         if (symbol_conf.filter_relative) {
2712                 nr_samples = hists->stats.nr_non_filtered_samples;
2713                 nr_events = hists->stats.total_non_filtered_period;
2714         }
2715
2716         if (evsel__is_group_event(evsel)) {
2717                 struct evsel *pos;
2718
2719                 evsel__group_desc(evsel, buf, buflen);
2720                 ev_name = buf;
2721
2722                 for_each_group_member(pos, evsel) {
2723                         struct hists *pos_hists = evsel__hists(pos);
2724
2725                         if (symbol_conf.filter_relative) {
2726                                 nr_samples += pos_hists->stats.nr_non_filtered_samples;
2727                                 nr_events += pos_hists->stats.total_non_filtered_period;
2728                         } else {
2729                                 nr_samples += pos_hists->stats.nr_samples;
2730                                 nr_events += pos_hists->stats.total_period;
2731                         }
2732                 }
2733         }
2734
2735         if (symbol_conf.show_ref_callgraph &&
2736             strstr(ev_name, "call-graph=no"))
2737                 enable_ref = true;
2738
2739         if (show_freq)
2740                 scnprintf(sample_freq_str, sizeof(sample_freq_str), " %d Hz,", evsel->core.attr.sample_freq);
2741
2742         nr_samples = convert_unit(nr_samples, &unit);
2743         printed = scnprintf(bf, size,
2744                            "Samples: %lu%c of event%s '%s',%s%sEvent count (approx.): %" PRIu64,
2745                            nr_samples, unit, evsel->core.nr_members > 1 ? "s" : "",
2746                            ev_name, sample_freq_str, enable_ref ? ref : " ", nr_events);
2747
2748
2749         if (hists->uid_filter_str)
2750                 printed += snprintf(bf + printed, size - printed,
2751                                     ", UID: %s", hists->uid_filter_str);
2752         if (thread) {
2753                 if (hists__has(hists, thread)) {
2754                         printed += scnprintf(bf + printed, size - printed,
2755                                     ", Thread: %s(%d)",
2756                                      (thread->comm_set ? thread__comm_str(thread) : ""),
2757                                     thread->tid);
2758                 } else {
2759                         printed += scnprintf(bf + printed, size - printed,
2760                                     ", Thread: %s",
2761                                      (thread->comm_set ? thread__comm_str(thread) : ""));
2762                 }
2763         }
2764         if (dso)
2765                 printed += scnprintf(bf + printed, size - printed,
2766                                     ", DSO: %s", dso->short_name);
2767         if (socket_id > -1)
2768                 printed += scnprintf(bf + printed, size - printed,
2769                                     ", Processor Socket: %d", socket_id);
2770
2771         return printed;
2772 }
2773
2774 int parse_filter_percentage(const struct option *opt __maybe_unused,
2775                             const char *arg, int unset __maybe_unused)
2776 {
2777         if (!strcmp(arg, "relative"))
2778                 symbol_conf.filter_relative = true;
2779         else if (!strcmp(arg, "absolute"))
2780                 symbol_conf.filter_relative = false;
2781         else {
2782                 pr_debug("Invalid percentage: %s\n", arg);
2783                 return -1;
2784         }
2785
2786         return 0;
2787 }
2788
2789 int perf_hist_config(const char *var, const char *value)
2790 {
2791         if (!strcmp(var, "hist.percentage"))
2792                 return parse_filter_percentage(NULL, value, 0);
2793
2794         return 0;
2795 }
2796
2797 int __hists__init(struct hists *hists, struct perf_hpp_list *hpp_list)
2798 {
2799         memset(hists, 0, sizeof(*hists));
2800         hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT_CACHED;
2801         hists->entries_in = &hists->entries_in_array[0];
2802         hists->entries_collapsed = RB_ROOT_CACHED;
2803         hists->entries = RB_ROOT_CACHED;
2804         pthread_mutex_init(&hists->lock, NULL);
2805         hists->socket_filter = -1;
2806         hists->hpp_list = hpp_list;
2807         INIT_LIST_HEAD(&hists->hpp_formats);
2808         return 0;
2809 }
2810
2811 static void hists__delete_remaining_entries(struct rb_root_cached *root)
2812 {
2813         struct rb_node *node;
2814         struct hist_entry *he;
2815
2816         while (!RB_EMPTY_ROOT(&root->rb_root)) {
2817                 node = rb_first_cached(root);
2818                 rb_erase_cached(node, root);
2819
2820                 he = rb_entry(node, struct hist_entry, rb_node_in);
2821                 hist_entry__delete(he);
2822         }
2823 }
2824
2825 static void hists__delete_all_entries(struct hists *hists)
2826 {
2827         hists__delete_entries(hists);
2828         hists__delete_remaining_entries(&hists->entries_in_array[0]);
2829         hists__delete_remaining_entries(&hists->entries_in_array[1]);
2830         hists__delete_remaining_entries(&hists->entries_collapsed);
2831 }
2832
2833 static void hists_evsel__exit(struct evsel *evsel)
2834 {
2835         struct hists *hists = evsel__hists(evsel);
2836         struct perf_hpp_fmt *fmt, *pos;
2837         struct perf_hpp_list_node *node, *tmp;
2838
2839         hists__delete_all_entries(hists);
2840
2841         list_for_each_entry_safe(node, tmp, &hists->hpp_formats, list) {
2842                 perf_hpp_list__for_each_format_safe(&node->hpp, fmt, pos) {
2843                         list_del_init(&fmt->list);
2844                         free(fmt);
2845                 }
2846                 list_del_init(&node->list);
2847                 free(node);
2848         }
2849 }
2850
2851 static int hists_evsel__init(struct evsel *evsel)
2852 {
2853         struct hists *hists = evsel__hists(evsel);
2854
2855         __hists__init(hists, &perf_hpp_list);
2856         return 0;
2857 }
2858
2859 /*
2860  * XXX We probably need a hists_evsel__exit() to free the hist_entries
2861  * stored in the rbtree...
2862  */
2863
2864 int hists__init(void)
2865 {
2866         int err = evsel__object_config(sizeof(struct hists_evsel),
2867                                        hists_evsel__init, hists_evsel__exit);
2868         if (err)
2869                 fputs("FATAL ERROR: Couldn't setup hists class\n", stderr);
2870
2871         return err;
2872 }
2873
2874 void perf_hpp_list__init(struct perf_hpp_list *list)
2875 {
2876         INIT_LIST_HEAD(&list->fields);
2877         INIT_LIST_HEAD(&list->sorts);
2878 }