From: Namhyung Kim <namhyung@kernel.org>
Date: Thu, 31 Oct 2013 01:05:29 +0000 (+0900)
Subject: perf report: Cache cumulative callchains
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~34^2~16^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4d3c8bd86c4eda08456691121f83b4e1db46866;p=pandora-kernel.git

perf report: Cache cumulative callchains

It is possble that a callchain has cycles or recursive calls.  In that
case it'll end up having entries more than 100% overhead in the
output.  In order to prevent such entries, cache each callchain node
and skip if same entry already cumulated.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arun Sharma <asharma@fb.com>
Tested-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1401335910-16832-8-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
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