linux-kernel - [PATCH 02/28] perf tools: Do not update total period of a hists when filtering

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Date:	Wed,  8 Jan 2014 17:46:07 +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>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Arun Sharma <asharma@...com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Rodrigo Campos <rodrigo@...g.com.ar>
Subject: [PATCH 02/28] perf tools: Do not update total period of a hists when filtering

When filtering by thread, dso or symbol on TUI it also update total
period so that the output shows different result than no filter - the
percentage changed to relative to filtered entries only.  Sometimes
(always?)  this is not desired since users might expect same results
with filter.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/hist.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 64df6b96e7ea..266d9b238856 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -698,7 +698,6 @@ static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h
 	if (h->ms.unfolded)
 		hists->nr_entries += h->nr_rows;
 	h->row_offset = 0;
-	hists->stats.total_period += h->stat.period;
 	hists->stats.nr_events[PERF_RECORD_SAMPLE] += h->stat.nr_events;
 
 	hists__calc_col_len(hists, h);
@@ -721,7 +720,7 @@ void hists__filter_by_dso(struct hists *hists)
 {
 	struct rb_node *nd;
 
-	hists->nr_entries = hists->stats.total_period = 0;
+	hists->nr_entries = 0;
 	hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
 	hists__reset_col_len(hists);
 
@@ -754,7 +753,7 @@ void hists__filter_by_thread(struct hists *hists)
 {
 	struct rb_node *nd;
 
-	hists->nr_entries = hists->stats.total_period = 0;
+	hists->nr_entries = 0;
 	hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
 	hists__reset_col_len(hists);
 
@@ -785,7 +784,7 @@ void hists__filter_by_symbol(struct hists *hists)
 {
 	struct rb_node *nd;
 
-	hists->nr_entries = hists->stats.total_period = 0;
+	hists->nr_entries = 0;
 	hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
 	hists__reset_col_len(hists);
 
-- 
1.7.11.7

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