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Date: Tue, 24 Jul 2012 18:01:24 +0900
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Paul Mackerras <paulus@...ba.org>,
Ingo Molnar <mingo@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
Stephane Eranian <eranian@...gle.com>,
Jiri Olsa <jolsa@...hat.com>,
Ulrich Drepper <drepper@...il.com>,
Andi Kleen <andi@...stfloor.org>
Subject: [PATCH 03/12] perf hist: Collapse group hist_entries to a leader
To support viewing an event group together, collapse all of members
in the group to the leader's tree. The entries in the leader's tree
will have group_stats to store those information.
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/util/hist.c | 114 ++++++++++++++++++++++++++++++++++++++++++----
tools/perf/util/symbol.c | 4 ++
tools/perf/util/symbol.h | 3 +-
3 files changed, 111 insertions(+), 10 deletions(-)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index d2a76d379f87..a8f4c56261a0 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -4,6 +4,7 @@
#include "hist.h"
#include "session.h"
#include "sort.h"
+#include "evsel.h"
#include <math.h>
static bool hists__filter_entry_by_dso(struct hists *hists,
@@ -394,17 +395,50 @@ void hist_entry__free(struct hist_entry *he)
free(he);
}
+static void hist_entry__add_stat(struct he_stat *left, struct he_stat *right)
+{
+ left->period += right->period;
+ left->period_sys += right->period_sys;
+ left->period_us += right->period_us;
+ left->period_guest_sys += right->period_guest_sys;
+ left->period_guest_us += right->period_guest_us;
+ left->nr_events += right->nr_events;
+}
+
+static void hist_entry__add_group_stat(struct perf_evsel *evsel,
+ struct hist_entry *iter,
+ struct hist_entry *he)
+{
+ struct perf_evsel *leader = evsel->leader;
+ if (!leader)
+ leader = evsel;
+
+ if (!iter->group_stats) {
+ iter->group_stats = calloc(leader->nr_children,
+ sizeof(struct he_stat));
+ if (!iter->group_stats)
+ return;
+ }
+
+ if (!perf_evsel__is_group_leader(evsel))
+ hist_entry__add_stat(&iter->group_stats[evsel->group_idx],
+ &he->stat);
+ else
+ hist_entry__add_stat(&iter->stat, &he->stat);
+}
+
/*
* collapse the histogram
*/
-static bool hists__collapse_insert_entry(struct hists *hists __used,
+static bool hists__collapse_insert_entry(struct hists *hists,
struct rb_root *root,
struct hist_entry *he)
{
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
struct hist_entry *iter;
+ struct perf_evsel *evsel = hists_2_evsel(hists);
int64_t cmp;
while (*p != NULL) {
@@ -414,8 +448,11 @@ static bool hists__collapse_insert_entry(struct hists *hists __used,
cmp = hist_entry__collapse(iter, he);
if (!cmp) {
- iter->stat.period += he->stat.period;
- iter->stat.nr_events += he->stat.nr_events;
+ if (symbol_conf.report_group)
+ hist_entry__add_group_stat(evsel, iter, he);
+ else
+ hist_entry__add_stat(&iter->stat, &he->stat);
+
if (symbol_conf.use_callchain) {
callchain_cursor_reset(&callchain_cursor);
callchain_merge(&callchain_cursor,
@@ -432,6 +469,16 @@ static bool hists__collapse_insert_entry(struct hists *hists __used,
p = &(*p)->rb_right;
}
+ if (symbol_conf.report_group) {
+ /*
+ * 'he' is not found in the leader tree.
+ * Insert it to the tree and setup stats properly.
+ */
+ hist_entry__add_group_stat(evsel, he, he);
+ if (!perf_evsel__is_group_leader(evsel))
+ memset(&he->stat, 0, sizeof(struct he_stat));
+ }
+
rb_link_node(&he->rb_node_in, parent, p);
rb_insert_color(&he->rb_node_in, root);
return true;
@@ -462,6 +509,7 @@ static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
static void __hists__collapse_resort(struct hists *hists, bool threaded)
{
struct rb_root *root;
+ struct rb_root *dest;
struct rb_node *next;
struct hist_entry *n;
@@ -470,13 +518,26 @@ static void __hists__collapse_resort(struct hists *hists, bool threaded)
root = hists__get_rotate_entries_in(hists);
next = rb_first(root);
+ dest = &hists->entries_collapsed;
+
+ if (symbol_conf.report_group) {
+ struct perf_evsel *leader;
+
+ /*
+ * Collapse hist entries to the leader's tree.
+ * If evsel->leader == NULL, it's the leader.
+ */
+ leader = hists_2_evsel(hists)->leader;
+ if (leader)
+ dest = &leader->hists.entries_collapsed;
+ }
while (next) {
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 (hists__collapse_insert_entry(hists, dest, n)) {
/*
* If it wasn't combined with one of the entries already
* collapsed, we need to apply the filters that may have
@@ -501,13 +562,38 @@ void hists__collapse_resort_threaded(struct hists *hists)
* reverse the map, sort on period.
*/
-static void __hists__insert_output_entry(struct rb_root *entries,
+static int __hists__output_cmd_period(struct hist_entry *left,
+ struct hist_entry *right,
+ int nr_group)
+{
+ if (left->stat.period > right->stat.period)
+ return 1;
+ if (left->stat.period < right->stat.period)
+ return -1;
+
+ if (symbol_conf.report_group) {
+ int i;
+
+ for (i = 0; i < nr_group; i++) {
+ if (left->group_stats[i].period >
+ right->group_stats[i].period)
+ return 1;
+ if (left->group_stats[i].period <
+ right->group_stats[i].period)
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static void __hists__insert_output_entry(struct hists *hists,
struct hist_entry *he,
u64 min_callchain_hits)
{
- struct rb_node **p = &entries->rb_node;
+ struct rb_node **p = &hists->entries.rb_node;
struct rb_node *parent = NULL;
struct hist_entry *iter;
+ struct perf_evsel *evsel = hists_2_evsel(hists);
if (symbol_conf.use_callchain)
callchain_param.sort(&he->sorted_chain, he->callchain,
@@ -517,14 +603,14 @@ static void __hists__insert_output_entry(struct rb_root *entries,
parent = *p;
iter = rb_entry(parent, struct hist_entry, rb_node);
- if (he->stat.period > iter->stat.period)
+ if (__hists__output_cmd_period(he, iter, evsel->nr_children) > 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);
+ rb_insert_color(&he->rb_node, &hists->entries);
}
static void __hists__output_resort(struct hists *hists, bool threaded)
@@ -536,6 +622,16 @@ static void __hists__output_resort(struct hists *hists, bool threaded)
min_callchain_hits = hists->stats.total_period * (callchain_param.min_percent / 100);
+ if (symbol_conf.report_group) {
+ struct perf_evsel *evsel = hists_2_evsel(hists);
+
+ /*
+ * We've collapsed all of non-leader entries to the leader.
+ */
+ if (!perf_evsel__is_group_leader(evsel))
+ return;
+ }
+
if (sort__need_collapse || threaded)
root = &hists->entries_collapsed;
else
@@ -552,7 +648,7 @@ static void __hists__output_resort(struct hists *hists, bool threaded)
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__insert_output_entry(hists, n, min_callchain_hits);
hists__inc_nr_entries(hists, n);
}
}
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 50958bbeb26a..753faa76b7c3 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -14,6 +14,7 @@
#include "debug.h"
#include "symbol.h"
#include "strlist.h"
+#include "sort.h"
#include <libelf.h>
#include <gelf.h>
@@ -2733,6 +2734,9 @@ int symbol__init(void)
symbol_conf.kptr_restrict = symbol__read_kptr_restrict();
+ if (symbol_conf.report_group)
+ sort__need_collapse = 1;
+
symbol_conf.initialized = true;
return 0;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index a884b99017f0..9da14d6b1729 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -88,7 +88,8 @@ struct symbol_conf {
initialized,
kptr_restrict,
annotate_asm_raw,
- annotate_src;
+ annotate_src,
+ report_group;
const char *vmlinux_name,
*kallsyms_name,
*source_prefix,
--
1.7.10.4
--
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