linux-kernel - Re: [PATCH 3/3] perf tools: Remove unnecessary callchain cursor state restore on unmatch

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Message-ID: <87txd592z4.fsf@sejong.aot.lge.com>
Date:	Wed, 15 Jan 2014 15:24:47 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 3/3] perf tools: Remove unnecessary callchain cursor state restore on unmatch

On Tue, 14 Jan 2014 16:37:16 +0100, Frederic Weisbecker wrote:
> If a new callchain branch doesn't match a single entry of the node that
> it is given against comparison in append_chain(), then the cursor is
> expected to be at the same position as it was before the comparison loop.
>
> As such, there is no need to restore the cursor position on exit in case
> of non matching branches.
>
> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>

Reviewed-by: Namhyung Kim <namhyung@...nel.org>

Thanks,
Namhyung
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