![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
We need to do that to stop accumulating entries in the dead_threads linked list, i.e. we were keeping references to threads in struct hists that continue to exist even after a thread exited and was removed from the machine threads rbtree. We still keep the dead_threads list, but just for debugging, allowing us to iterate at any given point over the threads that still are referenced by things like struct hist_entry. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-3ejvfyed0r7ue61dkurzjux4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1488 lines
34 KiB
C
1488 lines
34 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 "evlist.h"
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#include "evsel.h"
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#include "annotate.h"
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#include "ui/progress.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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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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int symlen;
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u16 len;
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/*
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* +4 accounts for '[x] ' priv level info
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* +2 accounts for 0x prefix on raw addresses
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* +3 accounts for ' y ' symtab origin info
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*/
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if (h->ms.sym) {
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symlen = h->ms.sym->namelen + 4;
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if (verbose)
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symlen += BITS_PER_LONG / 4 + 2 + 3;
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hists__new_col_len(hists, HISTC_SYMBOL, 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, symlen);
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hists__set_unres_dso_col_len(hists, HISTC_DSO);
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}
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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->parent)
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hists__new_col_len(hists, HISTC_PARENT, h->parent->namelen);
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if (h->branch_info) {
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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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if (verbose)
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symlen += BITS_PER_LONG / 4 + 2 + 3;
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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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if (verbose)
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symlen += BITS_PER_LONG / 4 + 2 + 3;
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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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if (h->mem_info) {
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if (h->mem_info->daddr.sym) {
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symlen = (int)h->mem_info->daddr.sym->namelen + 4
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+ unresolved_col_width + 2;
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hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL,
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symlen);
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hists__new_col_len(hists, HISTC_MEM_DCACHELINE,
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symlen + 1);
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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_MEM_DADDR_SYMBOL,
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symlen);
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}
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if (h->mem_info->daddr.map) {
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symlen = dso__name_len(h->mem_info->daddr.map->dso);
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hists__new_col_len(hists, HISTC_MEM_DADDR_DSO,
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symlen);
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} else {
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symlen = unresolved_col_width + 4 + 2;
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hists__set_unres_dso_col_len(hists, HISTC_MEM_DADDR_DSO);
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}
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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_MEM_DADDR_SYMBOL, symlen);
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hists__set_unres_dso_col_len(hists, HISTC_MEM_DADDR_DSO);
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}
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hists__new_col_len(hists, HISTC_MEM_LOCKED, 6);
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hists__new_col_len(hists, HISTC_MEM_TLB, 22);
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hists__new_col_len(hists, HISTC_MEM_SNOOP, 12);
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hists__new_col_len(hists, HISTC_MEM_LVL, 21 + 3);
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hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
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hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
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if (h->transaction)
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hists__new_col_len(hists, HISTC_TRANSACTION,
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hist_entry__transaction_len());
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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 he_stat__add_cpumode_period(struct he_stat *he_stat,
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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_stat->period_sys += period;
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break;
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case PERF_RECORD_MISC_USER:
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he_stat->period_us += period;
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break;
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case PERF_RECORD_MISC_GUEST_KERNEL:
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he_stat->period_guest_sys += period;
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break;
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case PERF_RECORD_MISC_GUEST_USER:
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he_stat->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 he_stat__add_period(struct he_stat *he_stat, u64 period,
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u64 weight)
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{
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he_stat->period += period;
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he_stat->weight += weight;
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he_stat->nr_events += 1;
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}
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static void he_stat__add_stat(struct he_stat *dest, struct he_stat *src)
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{
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dest->period += src->period;
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dest->period_sys += src->period_sys;
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dest->period_us += src->period_us;
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dest->period_guest_sys += src->period_guest_sys;
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dest->period_guest_us += src->period_guest_us;
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dest->nr_events += src->nr_events;
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dest->weight += src->weight;
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}
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static void he_stat__decay(struct he_stat *he_stat)
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{
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he_stat->period = (he_stat->period * 7) / 8;
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he_stat->nr_events = (he_stat->nr_events * 7) / 8;
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/* XXX need decay for weight too? */
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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->stat.period;
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u64 diff;
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if (prev_period == 0)
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return true;
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he_stat__decay(&he->stat);
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if (symbol_conf.cumulate_callchain)
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he_stat__decay(he->stat_acc);
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diff = prev_period - he->stat.period;
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hists->stats.total_period -= diff;
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if (!he->filtered)
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hists->stats.total_non_filtered_period -= diff;
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return he->stat.period == 0;
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}
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static void hists__delete_entry(struct hists *hists, struct hist_entry *he)
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{
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rb_erase(&he->rb_node, &hists->entries);
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if (sort__need_collapse)
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rb_erase(&he->rb_node_in, &hists->entries_collapsed);
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--hists->nr_entries;
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if (!he->filtered)
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--hists->nr_non_filtered_entries;
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hist_entry__delete(he);
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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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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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hists__delete_entry(hists, n);
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}
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}
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}
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void hists__delete_entries(struct hists *hists)
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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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hists__delete_entry(hists, n);
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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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bool sample_self)
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{
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size_t callchain_size = 0;
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struct hist_entry *he;
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if (symbol_conf.use_callchain)
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callchain_size = sizeof(struct callchain_root);
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he = zalloc(sizeof(*he) + callchain_size);
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if (he != NULL) {
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*he = *template;
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if (symbol_conf.cumulate_callchain) {
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he->stat_acc = malloc(sizeof(he->stat));
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if (he->stat_acc == NULL) {
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free(he);
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return NULL;
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}
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memcpy(he->stat_acc, &he->stat, sizeof(he->stat));
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if (!sample_self)
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memset(&he->stat, 0, sizeof(he->stat));
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}
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if (he->ms.map)
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he->ms.map->referenced = true;
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if (he->branch_info) {
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/*
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* This branch info is (a part of) allocated from
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* sample__resolve_bstack() and will be freed after
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* adding new entries. So we need to save a copy.
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*/
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he->branch_info = malloc(sizeof(*he->branch_info));
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if (he->branch_info == NULL) {
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free(he->stat_acc);
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free(he);
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return NULL;
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}
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memcpy(he->branch_info, template->branch_info,
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sizeof(*he->branch_info));
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if (he->branch_info->from.map)
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he->branch_info->from.map->referenced = true;
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if (he->branch_info->to.map)
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he->branch_info->to.map->referenced = true;
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}
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if (he->mem_info) {
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if (he->mem_info->iaddr.map)
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he->mem_info->iaddr.map->referenced = true;
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if (he->mem_info->daddr.map)
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he->mem_info->daddr.map->referenced = true;
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}
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if (symbol_conf.use_callchain)
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callchain_init(he->callchain);
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INIT_LIST_HEAD(&he->pairs.node);
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thread__get(he->thread);
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}
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return he;
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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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bool sample_self)
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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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int64_t cmp;
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u64 period = entry->stat.period;
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u64 weight = entry->stat.weight;
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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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/*
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* Make sure that it receives arguments in a same order as
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* hist_entry__collapse() so that we can use an appropriate
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* function when searching an entry regardless which sort
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* keys were used.
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*/
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cmp = hist_entry__cmp(he, entry);
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if (!cmp) {
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if (sample_self)
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he_stat__add_period(&he->stat, period, weight);
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if (symbol_conf.cumulate_callchain)
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he_stat__add_period(he->stat_acc, period, weight);
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/*
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* This mem info was allocated from sample__resolve_mem
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* and will not be used anymore.
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*/
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zfree(&entry->mem_info);
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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, sample_self);
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if (!he)
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return NULL;
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hists->nr_entries++;
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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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if (sample_self)
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he_stat__add_cpumode_period(&he->stat, al->cpumode, period);
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if (symbol_conf.cumulate_callchain)
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he_stat__add_cpumode_period(he->stat_acc, al->cpumode, period);
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return he;
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}
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struct hist_entry *__hists__add_entry(struct hists *hists,
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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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struct mem_info *mi,
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u64 period, u64 weight, u64 transaction,
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bool sample_self)
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{
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struct hist_entry entry = {
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.thread = al->thread,
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.comm = thread__comm(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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.cpumode = al->cpumode,
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.ip = al->addr,
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.level = al->level,
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.stat = {
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.nr_events = 1,
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.period = period,
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.weight = weight,
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},
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.parent = sym_parent,
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.filtered = symbol__parent_filter(sym_parent) | al->filtered,
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.hists = hists,
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.branch_info = bi,
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.mem_info = mi,
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.transaction = transaction,
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};
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return add_hist_entry(hists, &entry, al, sample_self);
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}
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static int
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|
iter_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_add_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_prepare_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
|
|
{
|
|
struct perf_sample *sample = iter->sample;
|
|
struct mem_info *mi;
|
|
|
|
mi = sample__resolve_mem(sample, al);
|
|
if (mi == NULL)
|
|
return -ENOMEM;
|
|
|
|
iter->priv = mi;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_add_single_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
|
|
{
|
|
u64 cost;
|
|
struct mem_info *mi = iter->priv;
|
|
struct hists *hists = evsel__hists(iter->evsel);
|
|
struct hist_entry *he;
|
|
|
|
if (mi == NULL)
|
|
return -EINVAL;
|
|
|
|
cost = iter->sample->weight;
|
|
if (!cost)
|
|
cost = 1;
|
|
|
|
/*
|
|
* must pass period=weight in order to get the correct
|
|
* sorting from hists__collapse_resort() which is solely
|
|
* based on periods. We want sorting be done on nr_events * weight
|
|
* and this is indirectly achieved by passing period=weight here
|
|
* and the he_stat__add_period() function.
|
|
*/
|
|
he = __hists__add_entry(hists, al, iter->parent, NULL, mi,
|
|
cost, cost, 0, true);
|
|
if (!he)
|
|
return -ENOMEM;
|
|
|
|
iter->he = he;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_finish_mem_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
struct perf_evsel *evsel = iter->evsel;
|
|
struct hists *hists = evsel__hists(evsel);
|
|
struct hist_entry *he = iter->he;
|
|
int err = -EINVAL;
|
|
|
|
if (he == NULL)
|
|
goto out;
|
|
|
|
hists__inc_nr_samples(hists, he->filtered);
|
|
|
|
err = hist_entry__append_callchain(he, iter->sample);
|
|
|
|
out:
|
|
/*
|
|
* We don't need to free iter->priv (mem_info) here since
|
|
* the mem info was either already freed in add_hist_entry() or
|
|
* passed to a new hist entry by hist_entry__new().
|
|
*/
|
|
iter->priv = NULL;
|
|
|
|
iter->he = NULL;
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
iter_prepare_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
|
|
{
|
|
struct branch_info *bi;
|
|
struct perf_sample *sample = iter->sample;
|
|
|
|
bi = sample__resolve_bstack(sample, al);
|
|
if (!bi)
|
|
return -ENOMEM;
|
|
|
|
iter->curr = 0;
|
|
iter->total = sample->branch_stack->nr;
|
|
|
|
iter->priv = bi;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_add_single_branch_entry(struct hist_entry_iter *iter __maybe_unused,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
/* to avoid calling callback function */
|
|
iter->he = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
|
|
{
|
|
struct branch_info *bi = iter->priv;
|
|
int i = iter->curr;
|
|
|
|
if (bi == NULL)
|
|
return 0;
|
|
|
|
if (iter->curr >= iter->total)
|
|
return 0;
|
|
|
|
al->map = bi[i].to.map;
|
|
al->sym = bi[i].to.sym;
|
|
al->addr = bi[i].to.addr;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
|
|
{
|
|
struct branch_info *bi;
|
|
struct perf_evsel *evsel = iter->evsel;
|
|
struct hists *hists = evsel__hists(evsel);
|
|
struct hist_entry *he = NULL;
|
|
int i = iter->curr;
|
|
int err = 0;
|
|
|
|
bi = iter->priv;
|
|
|
|
if (iter->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
|
|
goto out;
|
|
|
|
/*
|
|
* The report shows the percentage of total branches captured
|
|
* and not events sampled. Thus we use a pseudo period of 1.
|
|
*/
|
|
he = __hists__add_entry(hists, al, iter->parent, &bi[i], NULL,
|
|
1, 1, 0, true);
|
|
if (he == NULL)
|
|
return -ENOMEM;
|
|
|
|
hists__inc_nr_samples(hists, he->filtered);
|
|
|
|
out:
|
|
iter->he = he;
|
|
iter->curr++;
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
iter_finish_branch_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
zfree(&iter->priv);
|
|
iter->he = NULL;
|
|
|
|
return iter->curr >= iter->total ? 0 : -1;
|
|
}
|
|
|
|
static int
|
|
iter_prepare_normal_entry(struct hist_entry_iter *iter __maybe_unused,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location *al)
|
|
{
|
|
struct perf_evsel *evsel = iter->evsel;
|
|
struct perf_sample *sample = iter->sample;
|
|
struct hist_entry *he;
|
|
|
|
he = __hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
|
|
sample->period, sample->weight,
|
|
sample->transaction, true);
|
|
if (he == NULL)
|
|
return -ENOMEM;
|
|
|
|
iter->he = he;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_finish_normal_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
struct hist_entry *he = iter->he;
|
|
struct perf_evsel *evsel = iter->evsel;
|
|
struct perf_sample *sample = iter->sample;
|
|
|
|
if (he == NULL)
|
|
return 0;
|
|
|
|
iter->he = NULL;
|
|
|
|
hists__inc_nr_samples(evsel__hists(evsel), he->filtered);
|
|
|
|
return hist_entry__append_callchain(he, sample);
|
|
}
|
|
|
|
static int
|
|
iter_prepare_cumulative_entry(struct hist_entry_iter *iter __maybe_unused,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
struct hist_entry **he_cache;
|
|
|
|
callchain_cursor_commit(&callchain_cursor);
|
|
|
|
/*
|
|
* This is for detecting cycles or recursions so that they're
|
|
* cumulated only one time to prevent entries more than 100%
|
|
* overhead.
|
|
*/
|
|
he_cache = malloc(sizeof(*he_cache) * (PERF_MAX_STACK_DEPTH + 1));
|
|
if (he_cache == NULL)
|
|
return -ENOMEM;
|
|
|
|
iter->priv = he_cache;
|
|
iter->curr = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_add_single_cumulative_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al)
|
|
{
|
|
struct perf_evsel *evsel = iter->evsel;
|
|
struct hists *hists = evsel__hists(evsel);
|
|
struct perf_sample *sample = iter->sample;
|
|
struct hist_entry **he_cache = iter->priv;
|
|
struct hist_entry *he;
|
|
int err = 0;
|
|
|
|
he = __hists__add_entry(hists, al, iter->parent, NULL, NULL,
|
|
sample->period, sample->weight,
|
|
sample->transaction, true);
|
|
if (he == NULL)
|
|
return -ENOMEM;
|
|
|
|
iter->he = he;
|
|
he_cache[iter->curr++] = he;
|
|
|
|
hist_entry__append_callchain(he, sample);
|
|
|
|
/*
|
|
* We need to re-initialize the cursor since callchain_append()
|
|
* advanced the cursor to the end.
|
|
*/
|
|
callchain_cursor_commit(&callchain_cursor);
|
|
|
|
hists__inc_nr_samples(hists, he->filtered);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
iter_next_cumulative_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al)
|
|
{
|
|
struct callchain_cursor_node *node;
|
|
|
|
node = callchain_cursor_current(&callchain_cursor);
|
|
if (node == NULL)
|
|
return 0;
|
|
|
|
return fill_callchain_info(al, node, iter->hide_unresolved);
|
|
}
|
|
|
|
static int
|
|
iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al)
|
|
{
|
|
struct perf_evsel *evsel = iter->evsel;
|
|
struct perf_sample *sample = iter->sample;
|
|
struct hist_entry **he_cache = iter->priv;
|
|
struct hist_entry *he;
|
|
struct hist_entry he_tmp = {
|
|
.cpu = al->cpu,
|
|
.thread = al->thread,
|
|
.comm = thread__comm(al->thread),
|
|
.ip = al->addr,
|
|
.ms = {
|
|
.map = al->map,
|
|
.sym = al->sym,
|
|
},
|
|
.parent = iter->parent,
|
|
};
|
|
int i;
|
|
struct callchain_cursor cursor;
|
|
|
|
callchain_cursor_snapshot(&cursor, &callchain_cursor);
|
|
|
|
callchain_cursor_advance(&callchain_cursor);
|
|
|
|
/*
|
|
* Check if there's duplicate entries in the callchain.
|
|
* It's possible that it has cycles or recursive calls.
|
|
*/
|
|
for (i = 0; i < iter->curr; i++) {
|
|
if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) {
|
|
/* to avoid calling callback function */
|
|
iter->he = NULL;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
he = __hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
|
|
sample->period, sample->weight,
|
|
sample->transaction, false);
|
|
if (he == NULL)
|
|
return -ENOMEM;
|
|
|
|
iter->he = he;
|
|
he_cache[iter->curr++] = he;
|
|
|
|
if (symbol_conf.use_callchain)
|
|
callchain_append(he->callchain, &cursor, sample->period);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iter_finish_cumulative_entry(struct hist_entry_iter *iter,
|
|
struct addr_location *al __maybe_unused)
|
|
{
|
|
zfree(&iter->priv);
|
|
iter->he = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct hist_iter_ops hist_iter_mem = {
|
|
.prepare_entry = iter_prepare_mem_entry,
|
|
.add_single_entry = iter_add_single_mem_entry,
|
|
.next_entry = iter_next_nop_entry,
|
|
.add_next_entry = iter_add_next_nop_entry,
|
|
.finish_entry = iter_finish_mem_entry,
|
|
};
|
|
|
|
const struct hist_iter_ops hist_iter_branch = {
|
|
.prepare_entry = iter_prepare_branch_entry,
|
|
.add_single_entry = iter_add_single_branch_entry,
|
|
.next_entry = iter_next_branch_entry,
|
|
.add_next_entry = iter_add_next_branch_entry,
|
|
.finish_entry = iter_finish_branch_entry,
|
|
};
|
|
|
|
const struct hist_iter_ops hist_iter_normal = {
|
|
.prepare_entry = iter_prepare_normal_entry,
|
|
.add_single_entry = iter_add_single_normal_entry,
|
|
.next_entry = iter_next_nop_entry,
|
|
.add_next_entry = iter_add_next_nop_entry,
|
|
.finish_entry = iter_finish_normal_entry,
|
|
};
|
|
|
|
const struct hist_iter_ops hist_iter_cumulative = {
|
|
.prepare_entry = iter_prepare_cumulative_entry,
|
|
.add_single_entry = iter_add_single_cumulative_entry,
|
|
.next_entry = iter_next_cumulative_entry,
|
|
.add_next_entry = iter_add_next_cumulative_entry,
|
|
.finish_entry = iter_finish_cumulative_entry,
|
|
};
|
|
|
|
int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
|
|
struct perf_evsel *evsel, struct perf_sample *sample,
|
|
int max_stack_depth, void *arg)
|
|
{
|
|
int err, err2;
|
|
|
|
err = sample__resolve_callchain(sample, &iter->parent, evsel, al,
|
|
max_stack_depth);
|
|
if (err)
|
|
return err;
|
|
|
|
iter->evsel = evsel;
|
|
iter->sample = sample;
|
|
|
|
err = iter->ops->prepare_entry(iter, al);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = iter->ops->add_single_entry(iter, al);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (iter->he && iter->add_entry_cb) {
|
|
err = iter->add_entry_cb(iter, al, true, arg);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
|
|
while (iter->ops->next_entry(iter, al)) {
|
|
err = iter->ops->add_next_entry(iter, al);
|
|
if (err)
|
|
break;
|
|
|
|
if (iter->he && iter->add_entry_cb) {
|
|
err = iter->add_entry_cb(iter, al, false, arg);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
err2 = iter->ops->finish_entry(iter, al);
|
|
if (!err)
|
|
err = err2;
|
|
|
|
return err;
|
|
}
|
|
|
|
int64_t
|
|
hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
|
|
{
|
|
struct perf_hpp_fmt *fmt;
|
|
int64_t cmp = 0;
|
|
|
|
perf_hpp__for_each_sort_list(fmt) {
|
|
if (perf_hpp__should_skip(fmt))
|
|
continue;
|
|
|
|
cmp = fmt->cmp(fmt, left, right);
|
|
if (cmp)
|
|
break;
|
|
}
|
|
|
|
return cmp;
|
|
}
|
|
|
|
int64_t
|
|
hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
|
|
{
|
|
struct perf_hpp_fmt *fmt;
|
|
int64_t cmp = 0;
|
|
|
|
perf_hpp__for_each_sort_list(fmt) {
|
|
if (perf_hpp__should_skip(fmt))
|
|
continue;
|
|
|
|
cmp = fmt->collapse(fmt, left, right);
|
|
if (cmp)
|
|
break;
|
|
}
|
|
|
|
return cmp;
|
|
}
|
|
|
|
void hist_entry__delete(struct hist_entry *he)
|
|
{
|
|
thread__zput(he->thread);
|
|
zfree(&he->branch_info);
|
|
zfree(&he->mem_info);
|
|
zfree(&he->stat_acc);
|
|
free_srcline(he->srcline);
|
|
free_callchain(he->callchain);
|
|
free(he);
|
|
}
|
|
|
|
/*
|
|
* collapse the histogram
|
|
*/
|
|
|
|
static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused,
|
|
struct rb_root *root,
|
|
struct hist_entry *he)
|
|
{
|
|
struct rb_node **p = &root->rb_node;
|
|
struct rb_node *parent = NULL;
|
|
struct hist_entry *iter;
|
|
int64_t cmp;
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
iter = rb_entry(parent, struct hist_entry, rb_node_in);
|
|
|
|
cmp = hist_entry__collapse(iter, he);
|
|
|
|
if (!cmp) {
|
|
he_stat__add_stat(&iter->stat, &he->stat);
|
|
if (symbol_conf.cumulate_callchain)
|
|
he_stat__add_stat(iter->stat_acc, he->stat_acc);
|
|
|
|
if (symbol_conf.use_callchain) {
|
|
callchain_cursor_reset(&callchain_cursor);
|
|
callchain_merge(&callchain_cursor,
|
|
iter->callchain,
|
|
he->callchain);
|
|
}
|
|
hist_entry__delete(he);
|
|
return false;
|
|
}
|
|
|
|
if (cmp < 0)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
hists->nr_entries++;
|
|
|
|
rb_link_node(&he->rb_node_in, parent, p);
|
|
rb_insert_color(&he->rb_node_in, root);
|
|
return true;
|
|
}
|
|
|
|
static struct rb_root *hists__get_rotate_entries_in(struct hists *hists)
|
|
{
|
|
struct rb_root *root;
|
|
|
|
pthread_mutex_lock(&hists->lock);
|
|
|
|
root = hists->entries_in;
|
|
if (++hists->entries_in > &hists->entries_in_array[1])
|
|
hists->entries_in = &hists->entries_in_array[0];
|
|
|
|
pthread_mutex_unlock(&hists->lock);
|
|
|
|
return root;
|
|
}
|
|
|
|
static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
|
|
{
|
|
hists__filter_entry_by_dso(hists, he);
|
|
hists__filter_entry_by_thread(hists, he);
|
|
hists__filter_entry_by_symbol(hists, he);
|
|
}
|
|
|
|
void hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
struct hist_entry *n;
|
|
|
|
if (!sort__need_collapse)
|
|
return;
|
|
|
|
hists->nr_entries = 0;
|
|
|
|
root = hists__get_rotate_entries_in(hists);
|
|
|
|
next = rb_first(root);
|
|
|
|
while (next) {
|
|
if (session_done())
|
|
break;
|
|
n = rb_entry(next, struct hist_entry, rb_node_in);
|
|
next = rb_next(&n->rb_node_in);
|
|
|
|
rb_erase(&n->rb_node_in, root);
|
|
if (hists__collapse_insert_entry(hists, &hists->entries_collapsed, n)) {
|
|
/*
|
|
* If it wasn't combined with one of the entries already
|
|
* collapsed, we need to apply the filters that may have
|
|
* been set by, say, the hist_browser.
|
|
*/
|
|
hists__apply_filters(hists, n);
|
|
}
|
|
if (prog)
|
|
ui_progress__update(prog, 1);
|
|
}
|
|
}
|
|
|
|
static int hist_entry__sort(struct hist_entry *a, struct hist_entry *b)
|
|
{
|
|
struct perf_hpp_fmt *fmt;
|
|
int64_t cmp = 0;
|
|
|
|
perf_hpp__for_each_sort_list(fmt) {
|
|
if (perf_hpp__should_skip(fmt))
|
|
continue;
|
|
|
|
cmp = fmt->sort(fmt, a, b);
|
|
if (cmp)
|
|
break;
|
|
}
|
|
|
|
return cmp;
|
|
}
|
|
|
|
static void hists__reset_filter_stats(struct hists *hists)
|
|
{
|
|
hists->nr_non_filtered_entries = 0;
|
|
hists->stats.total_non_filtered_period = 0;
|
|
}
|
|
|
|
void hists__reset_stats(struct hists *hists)
|
|
{
|
|
hists->nr_entries = 0;
|
|
hists->stats.total_period = 0;
|
|
|
|
hists__reset_filter_stats(hists);
|
|
}
|
|
|
|
static void hists__inc_filter_stats(struct hists *hists, struct hist_entry *h)
|
|
{
|
|
hists->nr_non_filtered_entries++;
|
|
hists->stats.total_non_filtered_period += h->stat.period;
|
|
}
|
|
|
|
void hists__inc_stats(struct hists *hists, struct hist_entry *h)
|
|
{
|
|
if (!h->filtered)
|
|
hists__inc_filter_stats(hists, h);
|
|
|
|
hists->nr_entries++;
|
|
hists->stats.total_period += h->stat.period;
|
|
}
|
|
|
|
static void __hists__insert_output_entry(struct rb_root *entries,
|
|
struct hist_entry *he,
|
|
u64 min_callchain_hits)
|
|
{
|
|
struct rb_node **p = &entries->rb_node;
|
|
struct rb_node *parent = NULL;
|
|
struct hist_entry *iter;
|
|
|
|
if (symbol_conf.use_callchain)
|
|
callchain_param.sort(&he->sorted_chain, he->callchain,
|
|
min_callchain_hits, &callchain_param);
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
iter = rb_entry(parent, struct hist_entry, rb_node);
|
|
|
|
if (hist_entry__sort(he, iter) > 0)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
rb_link_node(&he->rb_node, parent, p);
|
|
rb_insert_color(&he->rb_node, entries);
|
|
}
|
|
|
|
void hists__output_resort(struct hists *hists, struct ui_progress *prog)
|
|
{
|
|
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)
|
|
root = &hists->entries_collapsed;
|
|
else
|
|
root = hists->entries_in;
|
|
|
|
next = rb_first(root);
|
|
hists->entries = RB_ROOT;
|
|
|
|
hists__reset_stats(hists);
|
|
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_stats(hists, n);
|
|
|
|
if (!n->filtered)
|
|
hists__calc_col_len(hists, n);
|
|
|
|
if (prog)
|
|
ui_progress__update(prog, 1);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
/* force fold unfiltered entry for simplicity */
|
|
h->ms.unfolded = false;
|
|
h->row_offset = 0;
|
|
|
|
hists->stats.nr_non_filtered_samples += h->stat.nr_events;
|
|
|
|
hists__inc_filter_stats(hists, h);
|
|
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->stats.nr_non_filtered_samples = 0;
|
|
|
|
hists__reset_filter_stats(hists);
|
|
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->stats.nr_non_filtered_samples = 0;
|
|
|
|
hists__reset_filter_stats(hists);
|
|
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->stats.nr_non_filtered_samples = 0;
|
|
|
|
hists__reset_filter_stats(hists);
|
|
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);
|
|
}
|
|
}
|
|
|
|
void events_stats__inc(struct events_stats *stats, u32 type)
|
|
{
|
|
++stats->nr_events[0];
|
|
++stats->nr_events[type];
|
|
}
|
|
|
|
void hists__inc_nr_events(struct hists *hists, u32 type)
|
|
{
|
|
events_stats__inc(&hists->stats, type);
|
|
}
|
|
|
|
void hists__inc_nr_samples(struct hists *hists, bool filtered)
|
|
{
|
|
events_stats__inc(&hists->stats, PERF_RECORD_SAMPLE);
|
|
if (!filtered)
|
|
hists->stats.nr_non_filtered_samples++;
|
|
}
|
|
|
|
static struct hist_entry *hists__add_dummy_entry(struct hists *hists,
|
|
struct hist_entry *pair)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node **p;
|
|
struct rb_node *parent = NULL;
|
|
struct hist_entry *he;
|
|
int64_t cmp;
|
|
|
|
if (sort__need_collapse)
|
|
root = &hists->entries_collapsed;
|
|
else
|
|
root = hists->entries_in;
|
|
|
|
p = &root->rb_node;
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
he = rb_entry(parent, struct hist_entry, rb_node_in);
|
|
|
|
cmp = hist_entry__collapse(he, pair);
|
|
|
|
if (!cmp)
|
|
goto out;
|
|
|
|
if (cmp < 0)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
he = hist_entry__new(pair, true);
|
|
if (he) {
|
|
memset(&he->stat, 0, sizeof(he->stat));
|
|
he->hists = hists;
|
|
rb_link_node(&he->rb_node_in, parent, p);
|
|
rb_insert_color(&he->rb_node_in, root);
|
|
hists__inc_stats(hists, he);
|
|
he->dummy = true;
|
|
}
|
|
out:
|
|
return he;
|
|
}
|
|
|
|
static struct hist_entry *hists__find_entry(struct hists *hists,
|
|
struct hist_entry *he)
|
|
{
|
|
struct rb_node *n;
|
|
|
|
if (sort__need_collapse)
|
|
n = hists->entries_collapsed.rb_node;
|
|
else
|
|
n = hists->entries_in->rb_node;
|
|
|
|
while (n) {
|
|
struct hist_entry *iter = rb_entry(n, struct hist_entry, rb_node_in);
|
|
int64_t cmp = hist_entry__collapse(iter, he);
|
|
|
|
if (cmp < 0)
|
|
n = n->rb_left;
|
|
else if (cmp > 0)
|
|
n = n->rb_right;
|
|
else
|
|
return iter;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Look for pairs to link to the leader buckets (hist_entries):
|
|
*/
|
|
void hists__match(struct hists *leader, struct hists *other)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *nd;
|
|
struct hist_entry *pos, *pair;
|
|
|
|
if (sort__need_collapse)
|
|
root = &leader->entries_collapsed;
|
|
else
|
|
root = leader->entries_in;
|
|
|
|
for (nd = rb_first(root); nd; nd = rb_next(nd)) {
|
|
pos = rb_entry(nd, struct hist_entry, rb_node_in);
|
|
pair = hists__find_entry(other, pos);
|
|
|
|
if (pair)
|
|
hist_entry__add_pair(pair, pos);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Look for entries in the other hists that are not present in the leader, if
|
|
* we find them, just add a dummy entry on the leader hists, with period=0,
|
|
* nr_events=0, to serve as the list header.
|
|
*/
|
|
int hists__link(struct hists *leader, struct hists *other)
|
|
{
|
|
struct rb_root *root;
|
|
struct rb_node *nd;
|
|
struct hist_entry *pos, *pair;
|
|
|
|
if (sort__need_collapse)
|
|
root = &other->entries_collapsed;
|
|
else
|
|
root = other->entries_in;
|
|
|
|
for (nd = rb_first(root); nd; nd = rb_next(nd)) {
|
|
pos = rb_entry(nd, struct hist_entry, rb_node_in);
|
|
|
|
if (!hist_entry__has_pairs(pos)) {
|
|
pair = hists__add_dummy_entry(leader, pos);
|
|
if (pair == NULL)
|
|
return -1;
|
|
hist_entry__add_pair(pos, pair);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
size_t perf_evlist__fprintf_nr_events(struct perf_evlist *evlist, FILE *fp)
|
|
{
|
|
struct perf_evsel *pos;
|
|
size_t ret = 0;
|
|
|
|
evlist__for_each(evlist, pos) {
|
|
ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos));
|
|
ret += events_stats__fprintf(&evsel__hists(pos)->stats, fp);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
u64 hists__total_period(struct hists *hists)
|
|
{
|
|
return symbol_conf.filter_relative ? hists->stats.total_non_filtered_period :
|
|
hists->stats.total_period;
|
|
}
|
|
|
|
int parse_filter_percentage(const struct option *opt __maybe_unused,
|
|
const char *arg, int unset __maybe_unused)
|
|
{
|
|
if (!strcmp(arg, "relative"))
|
|
symbol_conf.filter_relative = true;
|
|
else if (!strcmp(arg, "absolute"))
|
|
symbol_conf.filter_relative = false;
|
|
else
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int perf_hist_config(const char *var, const char *value)
|
|
{
|
|
if (!strcmp(var, "hist.percentage"))
|
|
return parse_filter_percentage(NULL, value, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hists_evsel__init(struct perf_evsel *evsel)
|
|
{
|
|
struct hists *hists = evsel__hists(evsel);
|
|
|
|
memset(hists, 0, sizeof(*hists));
|
|
hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT;
|
|
hists->entries_in = &hists->entries_in_array[0];
|
|
hists->entries_collapsed = RB_ROOT;
|
|
hists->entries = RB_ROOT;
|
|
pthread_mutex_init(&hists->lock, NULL);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* XXX We probably need a hists_evsel__exit() to free the hist_entries
|
|
* stored in the rbtree...
|
|
*/
|
|
|
|
int hists__init(void)
|
|
{
|
|
int err = perf_evsel__object_config(sizeof(struct hists_evsel),
|
|
hists_evsel__init, NULL);
|
|
if (err)
|
|
fputs("FATAL ERROR: Couldn't setup hists class\n", stderr);
|
|
|
|
return err;
|
|
}
|