1082 lines
25 KiB
C
1082 lines
25 KiB
C
#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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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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};
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static void hist_entry__add_cpumode_period(struct hist_entry *self,
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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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self->period_sys += period;
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break;
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case PERF_RECORD_MISC_USER:
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self->period_us += period;
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break;
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case PERF_RECORD_MISC_GUEST_KERNEL:
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self->period_guest_sys += period;
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break;
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case PERF_RECORD_MISC_GUEST_USER:
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self->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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/*
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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_node) : 0;
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struct hist_entry *self = malloc(sizeof(*self) + callchain_size);
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if (self != NULL) {
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*self = *template;
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self->nr_events = 1;
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if (symbol_conf.use_callchain)
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callchain_init(self->callchain);
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}
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return self;
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}
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static void hists__inc_nr_entries(struct hists *self, struct hist_entry *entry)
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{
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if (entry->ms.sym && self->max_sym_namelen < entry->ms.sym->namelen)
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self->max_sym_namelen = entry->ms.sym->namelen;
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++self->nr_entries;
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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 rb_node **p = &self->entries.rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *he;
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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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.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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};
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int cmp;
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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);
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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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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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return NULL;
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rb_link_node(&he->rb_node, parent, p);
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rb_insert_color(&he->rb_node, &self->entries);
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hists__inc_nr_entries(self, he);
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out:
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hist_entry__add_cpumode_period(he, al->cpumode, period);
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return he;
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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 collapse__insert_entry(struct rb_root *root, 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);
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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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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, parent, p);
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rb_insert_color(&he->rb_node, root);
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return true;
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}
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void hists__collapse_resort(struct hists *self)
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{
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struct rb_root tmp;
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struct rb_node *next;
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struct hist_entry *n;
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if (!sort__need_collapse)
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return;
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tmp = RB_ROOT;
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next = rb_first(&self->entries);
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self->nr_entries = 0;
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self->max_sym_namelen = 0;
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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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rb_erase(&n->rb_node, &self->entries);
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if (collapse__insert_entry(&tmp, n))
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hists__inc_nr_entries(self, n);
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}
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self->entries = tmp;
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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);
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}
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void hists__output_resort(struct hists *self)
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{
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struct rb_root tmp;
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struct rb_node *next;
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struct hist_entry *n;
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u64 min_callchain_hits;
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min_callchain_hits = self->stats.total_period * (callchain_param.min_percent / 100);
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tmp = RB_ROOT;
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next = rb_first(&self->entries);
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self->nr_entries = 0;
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self->max_sym_namelen = 0;
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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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rb_erase(&n->rb_node, &self->entries);
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__hists__insert_output_entry(&tmp, n, min_callchain_hits);
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hists__inc_nr_entries(self, n);
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}
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self->entries = tmp;
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}
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static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
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{
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int i;
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int ret = fprintf(fp, " ");
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for (i = 0; i < left_margin; i++)
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ret += fprintf(fp, " ");
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return ret;
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}
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static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
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int left_margin)
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{
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int i;
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size_t ret = callchain__fprintf_left_margin(fp, left_margin);
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for (i = 0; i < depth; i++)
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if (depth_mask & (1 << i))
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ret += fprintf(fp, "| ");
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else
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ret += fprintf(fp, " ");
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ret += fprintf(fp, "\n");
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return ret;
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}
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static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain,
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int depth, int depth_mask, int period,
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u64 total_samples, int hits,
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int left_margin)
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{
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int i;
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size_t ret = 0;
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ret += callchain__fprintf_left_margin(fp, left_margin);
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for (i = 0; i < depth; i++) {
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if (depth_mask & (1 << i))
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ret += fprintf(fp, "|");
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else
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ret += fprintf(fp, " ");
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if (!period && i == depth - 1) {
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double percent;
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percent = hits * 100.0 / total_samples;
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ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
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} else
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ret += fprintf(fp, "%s", " ");
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}
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if (chain->ms.sym)
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ret += fprintf(fp, "%s\n", chain->ms.sym->name);
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else
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ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
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return ret;
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}
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static struct symbol *rem_sq_bracket;
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static struct callchain_list rem_hits;
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static void init_rem_hits(void)
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{
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rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
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if (!rem_sq_bracket) {
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fprintf(stderr, "Not enough memory to display remaining hits\n");
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return;
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}
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strcpy(rem_sq_bracket->name, "[...]");
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rem_hits.ms.sym = rem_sq_bracket;
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}
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static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
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u64 total_samples, int depth,
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int depth_mask, int left_margin)
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{
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struct rb_node *node, *next;
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struct callchain_node *child;
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struct callchain_list *chain;
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int new_depth_mask = depth_mask;
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u64 new_total;
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u64 remaining;
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size_t ret = 0;
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int i;
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uint entries_printed = 0;
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if (callchain_param.mode == CHAIN_GRAPH_REL)
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new_total = self->children_hit;
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else
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new_total = total_samples;
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remaining = new_total;
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node = rb_first(&self->rb_root);
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while (node) {
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u64 cumul;
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child = rb_entry(node, struct callchain_node, rb_node);
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cumul = cumul_hits(child);
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remaining -= cumul;
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/*
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* The depth mask manages the output of pipes that show
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* the depth. We don't want to keep the pipes of the current
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* level for the last child of this depth.
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* Except if we have remaining filtered hits. They will
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* supersede the last child
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*/
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next = rb_next(node);
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if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
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new_depth_mask &= ~(1 << (depth - 1));
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/*
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* But we keep the older depth mask for the line separator
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* to keep the level link until we reach the last child
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*/
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ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
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left_margin);
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i = 0;
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list_for_each_entry(chain, &child->val, list) {
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ret += ipchain__fprintf_graph(fp, chain, depth,
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new_depth_mask, i++,
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new_total,
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cumul,
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left_margin);
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}
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ret += __callchain__fprintf_graph(fp, child, new_total,
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depth + 1,
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new_depth_mask | (1 << depth),
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left_margin);
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node = next;
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if (++entries_printed == callchain_param.print_limit)
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break;
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}
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if (callchain_param.mode == CHAIN_GRAPH_REL &&
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remaining && remaining != new_total) {
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if (!rem_sq_bracket)
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return ret;
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new_depth_mask &= ~(1 << (depth - 1));
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ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
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new_depth_mask, 0, new_total,
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remaining, left_margin);
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}
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return ret;
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}
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static size_t callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
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u64 total_samples, int left_margin)
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{
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struct callchain_list *chain;
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bool printed = false;
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int i = 0;
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int ret = 0;
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u32 entries_printed = 0;
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list_for_each_entry(chain, &self->val, list) {
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if (!i++ && sort__first_dimension == SORT_SYM)
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continue;
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if (!printed) {
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ret += callchain__fprintf_left_margin(fp, left_margin);
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ret += fprintf(fp, "|\n");
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ret += callchain__fprintf_left_margin(fp, left_margin);
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ret += fprintf(fp, "---");
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left_margin += 3;
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printed = true;
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} else
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ret += callchain__fprintf_left_margin(fp, left_margin);
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if (chain->ms.sym)
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ret += fprintf(fp, " %s\n", chain->ms.sym->name);
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else
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ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
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if (++entries_printed == callchain_param.print_limit)
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break;
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}
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ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
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return ret;
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}
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static size_t callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
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u64 total_samples)
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{
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struct callchain_list *chain;
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size_t ret = 0;
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if (!self)
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return 0;
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ret += callchain__fprintf_flat(fp, self->parent, total_samples);
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list_for_each_entry(chain, &self->val, list) {
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if (chain->ip >= PERF_CONTEXT_MAX)
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continue;
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if (chain->ms.sym)
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ret += fprintf(fp, " %s\n", chain->ms.sym->name);
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else
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ret += fprintf(fp, " %p\n",
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(void *)(long)chain->ip);
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}
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return ret;
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}
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|
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static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
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u64 total_samples, int left_margin)
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{
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struct rb_node *rb_node;
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struct callchain_node *chain;
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size_t ret = 0;
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u32 entries_printed = 0;
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rb_node = rb_first(&self->sorted_chain);
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while (rb_node) {
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double percent;
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chain = rb_entry(rb_node, struct callchain_node, rb_node);
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percent = chain->hit * 100.0 / total_samples;
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switch (callchain_param.mode) {
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case CHAIN_FLAT:
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ret += percent_color_fprintf(fp, " %6.2f%%\n",
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percent);
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ret += callchain__fprintf_flat(fp, chain, total_samples);
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break;
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case CHAIN_GRAPH_ABS: /* Falldown */
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case CHAIN_GRAPH_REL:
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ret += callchain__fprintf_graph(fp, chain, total_samples,
|
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left_margin);
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case CHAIN_NONE:
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default:
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break;
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}
|
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ret += fprintf(fp, "\n");
|
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if (++entries_printed == callchain_param.print_limit)
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break;
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rb_node = rb_next(rb_node);
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}
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|
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return ret;
|
|
}
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|
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int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
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struct hists *pair_hists, bool show_displacement,
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long displacement, bool color, u64 session_total)
|
|
{
|
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struct sort_entry *se;
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u64 period, total, period_sys, period_us, period_guest_sys, period_guest_us;
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const char *sep = symbol_conf.field_sep;
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int ret;
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if (symbol_conf.exclude_other && !self->parent)
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return 0;
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|
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if (pair_hists) {
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period = self->pair ? self->pair->period : 0;
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total = pair_hists->stats.total_period;
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period_sys = self->pair ? self->pair->period_sys : 0;
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period_us = self->pair ? self->pair->period_us : 0;
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period_guest_sys = self->pair ? self->pair->period_guest_sys : 0;
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period_guest_us = self->pair ? self->pair->period_guest_us : 0;
|
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} else {
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period = self->period;
|
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total = session_total;
|
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period_sys = self->period_sys;
|
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period_us = self->period_us;
|
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period_guest_sys = self->period_guest_sys;
|
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period_guest_us = self->period_guest_us;
|
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}
|
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|
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if (total) {
|
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if (color)
|
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ret = percent_color_snprintf(s, size,
|
|
sep ? "%.2f" : " %6.2f%%",
|
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(period * 100.0) / total);
|
|
else
|
|
ret = snprintf(s, size, sep ? "%.2f" : " %6.2f%%",
|
|
(period * 100.0) / total);
|
|
if (symbol_conf.show_cpu_utilization) {
|
|
ret += percent_color_snprintf(s + ret, size - ret,
|
|
sep ? "%.2f" : " %6.2f%%",
|
|
(period_sys * 100.0) / total);
|
|
ret += percent_color_snprintf(s + ret, size - ret,
|
|
sep ? "%.2f" : " %6.2f%%",
|
|
(period_us * 100.0) / total);
|
|
if (perf_guest) {
|
|
ret += percent_color_snprintf(s + ret,
|
|
size - ret,
|
|
sep ? "%.2f" : " %6.2f%%",
|
|
(period_guest_sys * 100.0) /
|
|
total);
|
|
ret += percent_color_snprintf(s + ret,
|
|
size - ret,
|
|
sep ? "%.2f" : " %6.2f%%",
|
|
(period_guest_us * 100.0) /
|
|
total);
|
|
}
|
|
}
|
|
} else
|
|
ret = snprintf(s, size, sep ? "%lld" : "%12lld ", period);
|
|
|
|
if (symbol_conf.show_nr_samples) {
|
|
if (sep)
|
|
ret += snprintf(s + ret, size - ret, "%c%lld", *sep, period);
|
|
else
|
|
ret += snprintf(s + ret, size - ret, "%11lld", period);
|
|
}
|
|
|
|
if (pair_hists) {
|
|
char bf[32];
|
|
double old_percent = 0, new_percent = 0, diff;
|
|
|
|
if (total > 0)
|
|
old_percent = (period * 100.0) / total;
|
|
if (session_total > 0)
|
|
new_percent = (self->period * 100.0) / session_total;
|
|
|
|
diff = new_percent - old_percent;
|
|
|
|
if (fabs(diff) >= 0.01)
|
|
snprintf(bf, sizeof(bf), "%+4.2F%%", diff);
|
|
else
|
|
snprintf(bf, sizeof(bf), " ");
|
|
|
|
if (sep)
|
|
ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf);
|
|
else
|
|
ret += snprintf(s + ret, size - ret, "%11.11s", bf);
|
|
|
|
if (show_displacement) {
|
|
if (displacement)
|
|
snprintf(bf, sizeof(bf), "%+4ld", displacement);
|
|
else
|
|
snprintf(bf, sizeof(bf), " ");
|
|
|
|
if (sep)
|
|
ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf);
|
|
else
|
|
ret += snprintf(s + ret, size - ret, "%6.6s", bf);
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(se, &hist_entry__sort_list, list) {
|
|
if (se->elide)
|
|
continue;
|
|
|
|
ret += snprintf(s + ret, size - ret, "%s", sep ?: " ");
|
|
ret += se->se_snprintf(self, s + ret, size - ret,
|
|
se->se_width ? *se->se_width : 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists,
|
|
bool show_displacement, long displacement, FILE *fp,
|
|
u64 session_total)
|
|
{
|
|
char bf[512];
|
|
hist_entry__snprintf(self, bf, sizeof(bf), pair_hists,
|
|
show_displacement, displacement,
|
|
true, session_total);
|
|
return fprintf(fp, "%s\n", bf);
|
|
}
|
|
|
|
static size_t hist_entry__fprintf_callchain(struct hist_entry *self, FILE *fp,
|
|
u64 session_total)
|
|
{
|
|
int left_margin = 0;
|
|
|
|
if (sort__first_dimension == SORT_COMM) {
|
|
struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
|
|
typeof(*se), list);
|
|
left_margin = se->se_width ? *se->se_width : 0;
|
|
left_margin -= thread__comm_len(self->thread);
|
|
}
|
|
|
|
return hist_entry_callchain__fprintf(fp, self, session_total,
|
|
left_margin);
|
|
}
|
|
|
|
size_t hists__fprintf(struct hists *self, struct hists *pair,
|
|
bool show_displacement, FILE *fp)
|
|
{
|
|
struct sort_entry *se;
|
|
struct rb_node *nd;
|
|
size_t ret = 0;
|
|
unsigned long position = 1;
|
|
long displacement = 0;
|
|
unsigned int width;
|
|
const char *sep = symbol_conf.field_sep;
|
|
const char *col_width = symbol_conf.col_width_list_str;
|
|
|
|
init_rem_hits();
|
|
|
|
fprintf(fp, "# %s", pair ? "Baseline" : "Overhead");
|
|
|
|
if (symbol_conf.show_nr_samples) {
|
|
if (sep)
|
|
fprintf(fp, "%cSamples", *sep);
|
|
else
|
|
fputs(" Samples ", fp);
|
|
}
|
|
|
|
if (symbol_conf.show_cpu_utilization) {
|
|
if (sep) {
|
|
ret += fprintf(fp, "%csys", *sep);
|
|
ret += fprintf(fp, "%cus", *sep);
|
|
if (perf_guest) {
|
|
ret += fprintf(fp, "%cguest sys", *sep);
|
|
ret += fprintf(fp, "%cguest us", *sep);
|
|
}
|
|
} else {
|
|
ret += fprintf(fp, " sys ");
|
|
ret += fprintf(fp, " us ");
|
|
if (perf_guest) {
|
|
ret += fprintf(fp, " guest sys ");
|
|
ret += fprintf(fp, " guest us ");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pair) {
|
|
if (sep)
|
|
ret += fprintf(fp, "%cDelta", *sep);
|
|
else
|
|
ret += fprintf(fp, " Delta ");
|
|
|
|
if (show_displacement) {
|
|
if (sep)
|
|
ret += fprintf(fp, "%cDisplacement", *sep);
|
|
else
|
|
ret += fprintf(fp, " Displ");
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(se, &hist_entry__sort_list, list) {
|
|
if (se->elide)
|
|
continue;
|
|
if (sep) {
|
|
fprintf(fp, "%c%s", *sep, se->se_header);
|
|
continue;
|
|
}
|
|
width = strlen(se->se_header);
|
|
if (se->se_width) {
|
|
if (symbol_conf.col_width_list_str) {
|
|
if (col_width) {
|
|
*se->se_width = atoi(col_width);
|
|
col_width = strchr(col_width, ',');
|
|
if (col_width)
|
|
++col_width;
|
|
}
|
|
}
|
|
width = *se->se_width = max(*se->se_width, width);
|
|
}
|
|
fprintf(fp, " %*s", width, se->se_header);
|
|
}
|
|
fprintf(fp, "\n");
|
|
|
|
if (sep)
|
|
goto print_entries;
|
|
|
|
fprintf(fp, "# ........");
|
|
if (symbol_conf.show_nr_samples)
|
|
fprintf(fp, " ..........");
|
|
if (pair) {
|
|
fprintf(fp, " ..........");
|
|
if (show_displacement)
|
|
fprintf(fp, " .....");
|
|
}
|
|
list_for_each_entry(se, &hist_entry__sort_list, list) {
|
|
unsigned int i;
|
|
|
|
if (se->elide)
|
|
continue;
|
|
|
|
fprintf(fp, " ");
|
|
if (se->se_width)
|
|
width = *se->se_width;
|
|
else
|
|
width = strlen(se->se_header);
|
|
for (i = 0; i < width; i++)
|
|
fprintf(fp, ".");
|
|
}
|
|
|
|
fprintf(fp, "\n#\n");
|
|
|
|
print_entries:
|
|
for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
|
|
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
|
|
|
|
if (show_displacement) {
|
|
if (h->pair != NULL)
|
|
displacement = ((long)h->pair->position -
|
|
(long)position);
|
|
else
|
|
displacement = 0;
|
|
++position;
|
|
}
|
|
ret += hist_entry__fprintf(h, pair, show_displacement,
|
|
displacement, fp, self->stats.total_period);
|
|
|
|
if (symbol_conf.use_callchain)
|
|
ret += hist_entry__fprintf_callchain(h, fp, self->stats.total_period);
|
|
|
|
if (h->ms.map == NULL && verbose > 1) {
|
|
__map_groups__fprintf_maps(&h->thread->mg,
|
|
MAP__FUNCTION, verbose, fp);
|
|
fprintf(fp, "%.10s end\n", graph_dotted_line);
|
|
}
|
|
}
|
|
|
|
free(rem_sq_bracket);
|
|
|
|
return ret;
|
|
}
|
|
|
|
enum hist_filter {
|
|
HIST_FILTER__DSO,
|
|
HIST_FILTER__THREAD,
|
|
};
|
|
|
|
void hists__filter_by_dso(struct hists *self, const struct dso *dso)
|
|
{
|
|
struct rb_node *nd;
|
|
|
|
self->nr_entries = self->stats.total_period = 0;
|
|
self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
|
|
self->max_sym_namelen = 0;
|
|
|
|
for (nd = rb_first(&self->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 (dso != NULL && (h->ms.map == NULL || h->ms.map->dso != dso)) {
|
|
h->filtered |= (1 << HIST_FILTER__DSO);
|
|
continue;
|
|
}
|
|
|
|
h->filtered &= ~(1 << HIST_FILTER__DSO);
|
|
if (!h->filtered) {
|
|
++self->nr_entries;
|
|
self->stats.total_period += h->period;
|
|
self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
|
|
if (h->ms.sym &&
|
|
self->max_sym_namelen < h->ms.sym->namelen)
|
|
self->max_sym_namelen = h->ms.sym->namelen;
|
|
}
|
|
}
|
|
}
|
|
|
|
void hists__filter_by_thread(struct hists *self, const struct thread *thread)
|
|
{
|
|
struct rb_node *nd;
|
|
|
|
self->nr_entries = self->stats.total_period = 0;
|
|
self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
|
|
self->max_sym_namelen = 0;
|
|
|
|
for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
|
|
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
|
|
|
|
if (thread != NULL && h->thread != thread) {
|
|
h->filtered |= (1 << HIST_FILTER__THREAD);
|
|
continue;
|
|
}
|
|
h->filtered &= ~(1 << HIST_FILTER__THREAD);
|
|
if (!h->filtered) {
|
|
++self->nr_entries;
|
|
self->stats.total_period += h->period;
|
|
self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
|
|
if (h->ms.sym &&
|
|
self->max_sym_namelen < h->ms.sym->namelen)
|
|
self->max_sym_namelen = h->ms.sym->namelen;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int symbol__alloc_hist(struct symbol *self)
|
|
{
|
|
struct sym_priv *priv = symbol__priv(self);
|
|
const int size = (sizeof(*priv->hist) +
|
|
(self->end - self->start) * sizeof(u64));
|
|
|
|
priv->hist = zalloc(size);
|
|
return priv->hist == NULL ? -1 : 0;
|
|
}
|
|
|
|
int hist_entry__inc_addr_samples(struct hist_entry *self, u64 ip)
|
|
{
|
|
unsigned int sym_size, offset;
|
|
struct symbol *sym = self->ms.sym;
|
|
struct sym_priv *priv;
|
|
struct sym_hist *h;
|
|
|
|
if (!sym || !self->ms.map)
|
|
return 0;
|
|
|
|
priv = symbol__priv(sym);
|
|
if (priv->hist == NULL && symbol__alloc_hist(sym) < 0)
|
|
return -ENOMEM;
|
|
|
|
sym_size = sym->end - sym->start;
|
|
offset = ip - sym->start;
|
|
|
|
pr_debug3("%s: ip=%#Lx\n", __func__, self->ms.map->unmap_ip(self->ms.map, ip));
|
|
|
|
if (offset >= sym_size)
|
|
return 0;
|
|
|
|
h = priv->hist;
|
|
h->sum++;
|
|
h->ip[offset]++;
|
|
|
|
pr_debug3("%#Lx %s: period++ [ip: %#Lx, %#Lx] => %Ld\n", self->ms.sym->start,
|
|
self->ms.sym->name, ip, ip - self->ms.sym->start, h->ip[offset]);
|
|
return 0;
|
|
}
|
|
|
|
static struct objdump_line *objdump_line__new(s64 offset, char *line)
|
|
{
|
|
struct objdump_line *self = malloc(sizeof(*self));
|
|
|
|
if (self != NULL) {
|
|
self->offset = offset;
|
|
self->line = line;
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
void objdump_line__free(struct objdump_line *self)
|
|
{
|
|
free(self->line);
|
|
free(self);
|
|
}
|
|
|
|
static void objdump__add_line(struct list_head *head, struct objdump_line *line)
|
|
{
|
|
list_add_tail(&line->node, head);
|
|
}
|
|
|
|
struct objdump_line *objdump__get_next_ip_line(struct list_head *head,
|
|
struct objdump_line *pos)
|
|
{
|
|
list_for_each_entry_continue(pos, head, node)
|
|
if (pos->offset >= 0)
|
|
return pos;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int hist_entry__parse_objdump_line(struct hist_entry *self, FILE *file,
|
|
struct list_head *head)
|
|
{
|
|
struct symbol *sym = self->ms.sym;
|
|
struct objdump_line *objdump_line;
|
|
char *line = NULL, *tmp, *tmp2, *c;
|
|
size_t line_len;
|
|
s64 line_ip, offset = -1;
|
|
|
|
if (getline(&line, &line_len, file) < 0)
|
|
return -1;
|
|
|
|
if (!line)
|
|
return -1;
|
|
|
|
while (line_len != 0 && isspace(line[line_len - 1]))
|
|
line[--line_len] = '\0';
|
|
|
|
c = strchr(line, '\n');
|
|
if (c)
|
|
*c = 0;
|
|
|
|
line_ip = -1;
|
|
|
|
/*
|
|
* Strip leading spaces:
|
|
*/
|
|
tmp = line;
|
|
while (*tmp) {
|
|
if (*tmp != ' ')
|
|
break;
|
|
tmp++;
|
|
}
|
|
|
|
if (*tmp) {
|
|
/*
|
|
* Parse hexa addresses followed by ':'
|
|
*/
|
|
line_ip = strtoull(tmp, &tmp2, 16);
|
|
if (*tmp2 != ':' || tmp == tmp2)
|
|
line_ip = -1;
|
|
}
|
|
|
|
if (line_ip != -1) {
|
|
u64 start = map__rip_2objdump(self->ms.map, sym->start);
|
|
offset = line_ip - start;
|
|
}
|
|
|
|
objdump_line = objdump_line__new(offset, line);
|
|
if (objdump_line == NULL) {
|
|
free(line);
|
|
return -1;
|
|
}
|
|
objdump__add_line(head, objdump_line);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hist_entry__annotate(struct hist_entry *self, struct list_head *head)
|
|
{
|
|
struct symbol *sym = self->ms.sym;
|
|
struct map *map = self->ms.map;
|
|
struct dso *dso = map->dso;
|
|
char *filename = dso__build_id_filename(dso, NULL, 0);
|
|
bool free_filename = true;
|
|
char command[PATH_MAX * 2];
|
|
FILE *file;
|
|
int err = 0;
|
|
u64 len;
|
|
|
|
if (filename == NULL) {
|
|
if (dso->has_build_id) {
|
|
pr_err("Can't annotate %s: not enough memory\n",
|
|
sym->name);
|
|
return -ENOMEM;
|
|
}
|
|
goto fallback;
|
|
} else if (readlink(filename, command, sizeof(command)) < 0 ||
|
|
strstr(command, "[kernel.kallsyms]") ||
|
|
access(filename, R_OK)) {
|
|
free(filename);
|
|
fallback:
|
|
/*
|
|
* If we don't have build-ids or the build-id file isn't in the
|
|
* cache, or is just a kallsyms file, well, lets hope that this
|
|
* DSO is the same as when 'perf record' ran.
|
|
*/
|
|
filename = dso->long_name;
|
|
free_filename = false;
|
|
}
|
|
|
|
if (dso->origin == DSO__ORIG_KERNEL) {
|
|
if (dso->annotate_warned)
|
|
goto out_free_filename;
|
|
err = -ENOENT;
|
|
dso->annotate_warned = 1;
|
|
pr_err("Can't annotate %s: No vmlinux file was found in the "
|
|
"path\n", sym->name);
|
|
goto out_free_filename;
|
|
}
|
|
|
|
pr_debug("%s: filename=%s, sym=%s, start=%#Lx, end=%#Lx\n", __func__,
|
|
filename, sym->name, map->unmap_ip(map, sym->start),
|
|
map->unmap_ip(map, sym->end));
|
|
|
|
len = sym->end - sym->start;
|
|
|
|
pr_debug("annotating [%p] %30s : [%p] %30s\n",
|
|
dso, dso->long_name, sym, sym->name);
|
|
|
|
snprintf(command, sizeof(command),
|
|
"objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s|expand",
|
|
map__rip_2objdump(map, sym->start),
|
|
map__rip_2objdump(map, sym->end),
|
|
filename, filename);
|
|
|
|
pr_debug("Executing: %s\n", command);
|
|
|
|
file = popen(command, "r");
|
|
if (!file)
|
|
goto out_free_filename;
|
|
|
|
while (!feof(file))
|
|
if (hist_entry__parse_objdump_line(self, file, head) < 0)
|
|
break;
|
|
|
|
pclose(file);
|
|
out_free_filename:
|
|
if (free_filename)
|
|
free(filename);
|
|
return err;
|
|
}
|
|
|
|
void hists__inc_nr_events(struct hists *self, u32 type)
|
|
{
|
|
++self->stats.nr_events[0];
|
|
++self->stats.nr_events[type];
|
|
}
|
|
|
|
size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
|
|
{
|
|
int i;
|
|
size_t ret = 0;
|
|
|
|
for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) {
|
|
if (!event__name[i])
|
|
continue;
|
|
ret += fprintf(fp, "%10s events: %10d\n",
|
|
event__name[i], self->stats.nr_events[i]);
|
|
}
|
|
|
|
return ret;
|
|
}
|