linux-kernel - Re: [PATCH 5/8] perf diff: Add --percentage option

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Date:	Thu, 20 Feb 2014 11:49:17 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 5/8] perf diff: Add --percentage option

On Mon, Feb 10, 2014 at 11:47:22AM +0900, Namhyung Kim wrote:
> The --percentage option is for controlling overhead percentage
> displayed.  It can only receive either of "relative" or "absolute" and
> affects -c delta output only.
> 
> For more information, please see previous commit same thing done to
> "perf report".
> 
> Cc: Jiri Olsa <jolsa@...hat.com>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/Documentation/perf-diff.txt | 21 +++++++++++++---
>  tools/perf/builtin-diff.c              | 46 +++++++++++++++++++++++++++++-----
>  2 files changed, 58 insertions(+), 9 deletions(-)

SNIP

> @@ -259,11 +263,18 @@ static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
>  static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
>  			 char *buf, size_t size)
>  {
> +	u64 he_total = he->hists->stats.total_period;
> +	u64 pair_total = pair->hists->stats.total_period;
> +
> +	if (symbol_conf.filter_relative) {
> +		he_total = he->hists->stats.total_filtered_period;
> +		pair_total = pair->hists->stats.total_filtered_period;
> +	}

and another ;-)

jirka
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