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