forked from Minki/linux
7e62ef44e8
Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1346640790-17197-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
693 lines
16 KiB
C
693 lines
16 KiB
C
#include "annotate.h"
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#include "util.h"
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#include "build-id.h"
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#include "hist.h"
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#include "session.h"
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#include "sort.h"
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#include <math.h>
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static bool hists__filter_entry_by_dso(struct hists *hists,
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struct hist_entry *he);
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static bool hists__filter_entry_by_thread(struct hists *hists,
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struct hist_entry *he);
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static bool hists__filter_entry_by_symbol(struct hists *hists,
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struct hist_entry *he);
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enum hist_filter {
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HIST_FILTER__DSO,
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HIST_FILTER__THREAD,
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HIST_FILTER__PARENT,
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HIST_FILTER__SYMBOL,
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};
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struct callchain_param callchain_param = {
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.mode = CHAIN_GRAPH_REL,
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.min_percent = 0.5,
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.order = ORDER_CALLEE
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};
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u16 hists__col_len(struct hists *hists, enum hist_column col)
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{
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return hists->col_len[col];
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}
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void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len)
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{
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hists->col_len[col] = len;
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}
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bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len)
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{
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if (len > hists__col_len(hists, col)) {
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hists__set_col_len(hists, col, len);
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return true;
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}
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return false;
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}
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void hists__reset_col_len(struct hists *hists)
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{
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enum hist_column col;
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for (col = 0; col < HISTC_NR_COLS; ++col)
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hists__set_col_len(hists, col, 0);
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}
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static void hists__set_unres_dso_col_len(struct hists *hists, int dso)
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{
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const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
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if (hists__col_len(hists, dso) < unresolved_col_width &&
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!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
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!symbol_conf.dso_list)
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hists__set_col_len(hists, dso, unresolved_col_width);
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}
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void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
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{
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const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
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u16 len;
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if (h->ms.sym)
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hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen + 4);
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else
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hists__set_unres_dso_col_len(hists, HISTC_DSO);
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len = thread__comm_len(h->thread);
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if (hists__new_col_len(hists, HISTC_COMM, len))
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hists__set_col_len(hists, HISTC_THREAD, len + 6);
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if (h->ms.map) {
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len = dso__name_len(h->ms.map->dso);
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hists__new_col_len(hists, HISTC_DSO, len);
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}
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if (h->branch_info) {
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int symlen;
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/*
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* +4 accounts for '[x] ' priv level info
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* +2 account of 0x prefix on raw addresses
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*/
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if (h->branch_info->from.sym) {
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symlen = (int)h->branch_info->from.sym->namelen + 4;
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hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
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symlen = dso__name_len(h->branch_info->from.map->dso);
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hists__new_col_len(hists, HISTC_DSO_FROM, symlen);
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} else {
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symlen = unresolved_col_width + 4 + 2;
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hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
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hists__set_unres_dso_col_len(hists, HISTC_DSO_FROM);
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}
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if (h->branch_info->to.sym) {
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symlen = (int)h->branch_info->to.sym->namelen + 4;
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hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
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symlen = dso__name_len(h->branch_info->to.map->dso);
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hists__new_col_len(hists, HISTC_DSO_TO, symlen);
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} else {
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symlen = unresolved_col_width + 4 + 2;
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hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
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hists__set_unres_dso_col_len(hists, HISTC_DSO_TO);
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}
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}
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}
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void hists__output_recalc_col_len(struct hists *hists, int max_rows)
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{
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struct rb_node *next = rb_first(&hists->entries);
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struct hist_entry *n;
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int row = 0;
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hists__reset_col_len(hists);
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while (next && row++ < max_rows) {
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n = rb_entry(next, struct hist_entry, rb_node);
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if (!n->filtered)
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hists__calc_col_len(hists, n);
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next = rb_next(&n->rb_node);
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}
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}
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static void hist_entry__add_cpumode_period(struct hist_entry *he,
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unsigned int cpumode, u64 period)
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{
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switch (cpumode) {
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case PERF_RECORD_MISC_KERNEL:
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he->period_sys += period;
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break;
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case PERF_RECORD_MISC_USER:
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he->period_us += period;
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break;
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case PERF_RECORD_MISC_GUEST_KERNEL:
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he->period_guest_sys += period;
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break;
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case PERF_RECORD_MISC_GUEST_USER:
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he->period_guest_us += period;
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break;
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default:
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break;
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}
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}
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static void hist_entry__decay(struct hist_entry *he)
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{
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he->period = (he->period * 7) / 8;
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he->nr_events = (he->nr_events * 7) / 8;
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}
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static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
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{
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u64 prev_period = he->period;
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if (prev_period == 0)
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return true;
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hist_entry__decay(he);
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if (!he->filtered)
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hists->stats.total_period -= prev_period - he->period;
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return he->period == 0;
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}
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static void __hists__decay_entries(struct hists *hists, bool zap_user,
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bool zap_kernel, bool threaded)
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{
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struct rb_node *next = rb_first(&hists->entries);
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struct hist_entry *n;
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while (next) {
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n = rb_entry(next, struct hist_entry, rb_node);
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next = rb_next(&n->rb_node);
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/*
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* We may be annotating this, for instance, so keep it here in
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* case some it gets new samples, we'll eventually free it when
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* the user stops browsing and it agains gets fully decayed.
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*/
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if (((zap_user && n->level == '.') ||
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(zap_kernel && n->level != '.') ||
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hists__decay_entry(hists, n)) &&
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!n->used) {
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rb_erase(&n->rb_node, &hists->entries);
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if (sort__need_collapse || threaded)
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rb_erase(&n->rb_node_in, &hists->entries_collapsed);
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hist_entry__free(n);
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--hists->nr_entries;
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}
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}
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}
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void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
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{
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return __hists__decay_entries(hists, zap_user, zap_kernel, false);
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}
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void hists__decay_entries_threaded(struct hists *hists,
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bool zap_user, bool zap_kernel)
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{
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return __hists__decay_entries(hists, zap_user, zap_kernel, true);
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}
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/*
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* histogram, sorted on item, collects periods
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*/
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static struct hist_entry *hist_entry__new(struct hist_entry *template)
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{
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size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_root) : 0;
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struct hist_entry *he = malloc(sizeof(*he) + callchain_size);
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if (he != NULL) {
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*he = *template;
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he->nr_events = 1;
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if (he->ms.map)
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he->ms.map->referenced = true;
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if (symbol_conf.use_callchain)
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callchain_init(he->callchain);
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}
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return he;
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}
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static void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h)
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{
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if (!h->filtered) {
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hists__calc_col_len(hists, h);
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++hists->nr_entries;
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hists->stats.total_period += h->period;
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}
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}
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static u8 symbol__parent_filter(const struct symbol *parent)
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{
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if (symbol_conf.exclude_other && parent == NULL)
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return 1 << HIST_FILTER__PARENT;
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return 0;
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}
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static struct hist_entry *add_hist_entry(struct hists *hists,
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struct hist_entry *entry,
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struct addr_location *al,
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u64 period)
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{
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struct rb_node **p;
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struct rb_node *parent = NULL;
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struct hist_entry *he;
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int cmp;
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pthread_mutex_lock(&hists->lock);
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p = &hists->entries_in->rb_node;
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while (*p != NULL) {
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parent = *p;
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he = rb_entry(parent, struct hist_entry, rb_node_in);
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cmp = hist_entry__cmp(entry, he);
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if (!cmp) {
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he->period += period;
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++he->nr_events;
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/* If the map of an existing hist_entry has
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* become out-of-date due to an exec() or
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* similar, update it. Otherwise we will
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* mis-adjust symbol addresses when computing
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* the history counter to increment.
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*/
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if (he->ms.map != entry->ms.map) {
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he->ms.map = entry->ms.map;
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if (he->ms.map)
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he->ms.map->referenced = true;
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}
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goto out;
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}
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if (cmp < 0)
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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he = hist_entry__new(entry);
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if (!he)
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goto out_unlock;
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rb_link_node(&he->rb_node_in, parent, p);
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rb_insert_color(&he->rb_node_in, hists->entries_in);
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out:
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hist_entry__add_cpumode_period(he, al->cpumode, period);
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out_unlock:
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pthread_mutex_unlock(&hists->lock);
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return he;
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}
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struct hist_entry *__hists__add_branch_entry(struct hists *self,
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struct addr_location *al,
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struct symbol *sym_parent,
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struct branch_info *bi,
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u64 period)
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{
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struct hist_entry entry = {
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.thread = al->thread,
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.ms = {
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.map = bi->to.map,
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.sym = bi->to.sym,
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},
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.cpu = al->cpu,
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.ip = bi->to.addr,
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.level = al->level,
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.period = period,
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.parent = sym_parent,
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.filtered = symbol__parent_filter(sym_parent),
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.branch_info = bi,
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};
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return add_hist_entry(self, &entry, al, period);
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}
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struct hist_entry *__hists__add_entry(struct hists *self,
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struct addr_location *al,
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struct symbol *sym_parent, u64 period)
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{
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struct hist_entry entry = {
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.thread = al->thread,
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.ms = {
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.map = al->map,
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.sym = al->sym,
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},
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.cpu = al->cpu,
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.ip = al->addr,
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.level = al->level,
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.period = period,
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.parent = sym_parent,
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.filtered = symbol__parent_filter(sym_parent),
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};
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return add_hist_entry(self, &entry, al, period);
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}
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int64_t
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hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
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{
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struct sort_entry *se;
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int64_t cmp = 0;
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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cmp = se->se_cmp(left, right);
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if (cmp)
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break;
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}
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return cmp;
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}
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int64_t
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hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
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{
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struct sort_entry *se;
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int64_t cmp = 0;
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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int64_t (*f)(struct hist_entry *, struct hist_entry *);
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f = se->se_collapse ?: se->se_cmp;
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cmp = f(left, right);
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if (cmp)
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break;
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}
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return cmp;
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}
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void hist_entry__free(struct hist_entry *he)
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{
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free(he);
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}
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/*
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* collapse the histogram
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*/
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static bool hists__collapse_insert_entry(struct hists *hists __used,
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struct rb_root *root,
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struct hist_entry *he)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *iter;
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int64_t cmp;
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct hist_entry, rb_node_in);
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cmp = hist_entry__collapse(iter, he);
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if (!cmp) {
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iter->period += he->period;
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iter->nr_events += he->nr_events;
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if (symbol_conf.use_callchain) {
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callchain_cursor_reset(&callchain_cursor);
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callchain_merge(&callchain_cursor,
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iter->callchain,
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he->callchain);
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}
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hist_entry__free(he);
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return false;
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}
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if (cmp < 0)
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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rb_link_node(&he->rb_node_in, parent, p);
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rb_insert_color(&he->rb_node_in, root);
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return true;
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}
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static struct rb_root *hists__get_rotate_entries_in(struct hists *hists)
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{
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struct rb_root *root;
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pthread_mutex_lock(&hists->lock);
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root = hists->entries_in;
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if (++hists->entries_in > &hists->entries_in_array[1])
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hists->entries_in = &hists->entries_in_array[0];
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pthread_mutex_unlock(&hists->lock);
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return root;
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}
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static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
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{
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hists__filter_entry_by_dso(hists, he);
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hists__filter_entry_by_thread(hists, he);
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hists__filter_entry_by_symbol(hists, he);
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}
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static void __hists__collapse_resort(struct hists *hists, bool threaded)
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{
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struct rb_root *root;
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struct rb_node *next;
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struct hist_entry *n;
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if (!sort__need_collapse && !threaded)
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return;
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root = hists__get_rotate_entries_in(hists);
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next = rb_first(root);
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while (next) {
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n = rb_entry(next, struct hist_entry, rb_node_in);
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next = rb_next(&n->rb_node_in);
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rb_erase(&n->rb_node_in, root);
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if (hists__collapse_insert_entry(hists, &hists->entries_collapsed, n)) {
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/*
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* If it wasn't combined with one of the entries already
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* collapsed, we need to apply the filters that may have
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* been set by, say, the hist_browser.
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*/
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hists__apply_filters(hists, n);
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}
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}
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}
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void hists__collapse_resort(struct hists *hists)
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{
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return __hists__collapse_resort(hists, false);
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}
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void hists__collapse_resort_threaded(struct hists *hists)
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{
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return __hists__collapse_resort(hists, true);
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}
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/*
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* reverse the map, sort on period.
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*/
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static void __hists__insert_output_entry(struct rb_root *entries,
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struct hist_entry *he,
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u64 min_callchain_hits)
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{
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struct rb_node **p = &entries->rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *iter;
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if (symbol_conf.use_callchain)
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callchain_param.sort(&he->sorted_chain, he->callchain,
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min_callchain_hits, &callchain_param);
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct hist_entry, rb_node);
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if (he->period > iter->period)
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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rb_link_node(&he->rb_node, parent, p);
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rb_insert_color(&he->rb_node, entries);
|
|
}
|
|
|
|
static void __hists__output_resort(struct hists *hists, bool threaded)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
struct hist_entry *n;
|
|
u64 min_callchain_hits;
|
|
|
|
min_callchain_hits = hists->stats.total_period * (callchain_param.min_percent / 100);
|
|
|
|
if (sort__need_collapse || threaded)
|
|
root = &hists->entries_collapsed;
|
|
else
|
|
root = hists->entries_in;
|
|
|
|
next = rb_first(root);
|
|
hists->entries = RB_ROOT;
|
|
|
|
hists->nr_entries = 0;
|
|
hists->stats.total_period = 0;
|
|
hists__reset_col_len(hists);
|
|
|
|
while (next) {
|
|
n = rb_entry(next, struct hist_entry, rb_node_in);
|
|
next = rb_next(&n->rb_node_in);
|
|
|
|
__hists__insert_output_entry(&hists->entries, n, min_callchain_hits);
|
|
hists__inc_nr_entries(hists, n);
|
|
}
|
|
}
|
|
|
|
void hists__output_resort(struct hists *hists)
|
|
{
|
|
return __hists__output_resort(hists, false);
|
|
}
|
|
|
|
void hists__output_resort_threaded(struct hists *hists)
|
|
{
|
|
return __hists__output_resort(hists, true);
|
|
}
|
|
|
|
static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h,
|
|
enum hist_filter filter)
|
|
{
|
|
h->filtered &= ~(1 << filter);
|
|
if (h->filtered)
|
|
return;
|
|
|
|
++hists->nr_entries;
|
|
if (h->ms.unfolded)
|
|
hists->nr_entries += h->nr_rows;
|
|
h->row_offset = 0;
|
|
hists->stats.total_period += h->period;
|
|
hists->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
|
|
|
|
hists__calc_col_len(hists, h);
|
|
}
|
|
|
|
|
|
static bool hists__filter_entry_by_dso(struct hists *hists,
|
|
struct hist_entry *he)
|
|
{
|
|
if (hists->dso_filter != NULL &&
|
|
(he->ms.map == NULL || he->ms.map->dso != hists->dso_filter)) {
|
|
he->filtered |= (1 << HIST_FILTER__DSO);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void hists__filter_by_dso(struct hists *hists)
|
|
{
|
|
struct rb_node *nd;
|
|
|
|
hists->nr_entries = hists->stats.total_period = 0;
|
|
hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
|
|
hists__reset_col_len(hists);
|
|
|
|
for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
|
|
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
|
|
|
|
if (symbol_conf.exclude_other && !h->parent)
|
|
continue;
|
|
|
|
if (hists__filter_entry_by_dso(hists, h))
|
|
continue;
|
|
|
|
hists__remove_entry_filter(hists, h, HIST_FILTER__DSO);
|
|
}
|
|
}
|
|
|
|
static bool hists__filter_entry_by_thread(struct hists *hists,
|
|
struct hist_entry *he)
|
|
{
|
|
if (hists->thread_filter != NULL &&
|
|
he->thread != hists->thread_filter) {
|
|
he->filtered |= (1 << HIST_FILTER__THREAD);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void hists__filter_by_thread(struct hists *hists)
|
|
{
|
|
struct rb_node *nd;
|
|
|
|
hists->nr_entries = hists->stats.total_period = 0;
|
|
hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
|
|
hists__reset_col_len(hists);
|
|
|
|
for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
|
|
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
|
|
|
|
if (hists__filter_entry_by_thread(hists, h))
|
|
continue;
|
|
|
|
hists__remove_entry_filter(hists, h, HIST_FILTER__THREAD);
|
|
}
|
|
}
|
|
|
|
static bool hists__filter_entry_by_symbol(struct hists *hists,
|
|
struct hist_entry *he)
|
|
{
|
|
if (hists->symbol_filter_str != NULL &&
|
|
(!he->ms.sym || strstr(he->ms.sym->name,
|
|
hists->symbol_filter_str) == NULL)) {
|
|
he->filtered |= (1 << HIST_FILTER__SYMBOL);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void hists__filter_by_symbol(struct hists *hists)
|
|
{
|
|
struct rb_node *nd;
|
|
|
|
hists->nr_entries = hists->stats.total_period = 0;
|
|
hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
|
|
hists__reset_col_len(hists);
|
|
|
|
for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
|
|
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
|
|
|
|
if (hists__filter_entry_by_symbol(hists, h))
|
|
continue;
|
|
|
|
hists__remove_entry_filter(hists, h, HIST_FILTER__SYMBOL);
|
|
}
|
|
}
|
|
|
|
int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
|
|
{
|
|
return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
|
|
}
|
|
|
|
int hist_entry__annotate(struct hist_entry *he, size_t privsize)
|
|
{
|
|
return symbol__annotate(he->ms.sym, he->ms.map, privsize);
|
|
}
|
|
|
|
void hists__inc_nr_events(struct hists *hists, u32 type)
|
|
{
|
|
++hists->stats.nr_events[0];
|
|
++hists->stats.nr_events[type];
|
|
}
|