linux-kernel - Re: [PATCH] perf: Add a new sort order: SORT

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Date:	Wed, 8 Aug 2012 15:37:18 -0700
From:	Arun Sharma <asharma@...com>
To:	<linux-kernel@...r.kernel.org>
CC:	Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	Namhyung Kim <namhyung.kim@....com>,
	Tom Zanussi <tzanussi@...il.com>,
	<linux-perf-users@...r.kernel.org>
Subject: Re: [PATCH] perf: Add a new sort order: SORT_INCLUSIVE (v6)

On 8/8/12 12:16 PM, Arun Sharma wrote:

>     and therefore breaks the invariant period == period_self
>     in the default mode (no sort inclusive).


hist_entry__decay() also needs an update to maintain the invariant.

--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -138,6 +138,7 @@ static void hist_entry__add_cpumode_period(struct 
hist_entry *he,
  static void hist_entry__decay(struct hist_entry *he)
  {
         he->period = (he->period * 7) / 8;
+       he->period_self = (he->period_self * 7) / 8;
         he->nr_events = (he->nr_events * 7) / 8;
  }

  -Arun
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