linux-kernel - [PATCH 01/16] perf hists: Add missing period

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Message-Id: <1348645663-25303-2-git-send-email-namhyung@kernel.org>
Date:	Wed, 26 Sep 2012 16:47:28 +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>,
	Jiri Olsa <jolsa@...hat.com>,
	Stephane Eranian <eranian@...gle.com>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung.kim@....com>,
	Arun Sharma <asharma@...com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH 01/16] perf hists: Add missing period_* fields when collapsing a hist entry

From: Namhyung Kim <namhyung.kim@....com>

So that the perf report won't lost the cpu utilization information.

For example, if there're two process that have same name.

  $ perf report --stdio --showcpuutilization -s pid
  [SNIP]
  #   Overhead       sys        us  Command:  Pid
  #   ........  ........  ........  .............
  #
        55.12%     0.01%    55.10%  noploop:28781
        44.88%     0.06%    44.83%  noploop:28782

Before:
  $ perf report --stdio --showcpuutilization -s comm
  [SNIP]
  #   Overhead       sys        us
  #   ........  ........  ........
  #
       100.00%     0.06%    44.83%

After:
  $ perf report --stdio --showcpuutilization -s comm
  [SNIP]
  #   Overhead       sys        us
  #   ........  ........  ........
  #
       100.00%     0.07%    99.93%

Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Arun Sharma <asharma@...com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/hist.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6ec5398de89d..236bc9d98ff2 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -410,8 +410,13 @@ static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused,
 		cmp = hist_entry__collapse(iter, he);
 
 		if (!cmp) {
-			iter->period += he->period;
-			iter->nr_events += he->nr_events;
+			iter->period		+= he->period;
+			iter->period_sys	+= he->period_sys;
+			iter->period_us		+= he->period_us;
+			iter->period_guest_sys	+= he->period_guest_sys;
+			iter->period_guest_us	+= he->period_guest_us;
+			iter->nr_events		+= he->nr_events;
+
 			if (symbol_conf.use_callchain) {
 				callchain_cursor_reset(&callchain_cursor);
 				callchain_merge(&callchain_cursor,
-- 
1.7.11.4

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