From: Li Zefan <lizefan@huawei.com>
Date: Fri, 29 Mar 2013 06:37:43 +0000 (+0800)
Subject: sched/cpuacct: Remove redundant NULL checks in cpuacct_acount_field()
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~118^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f40d804325e925409907e29f46ecb012090b6c2;p=pandora-kernel.git

sched/cpuacct: Remove redundant NULL checks in cpuacct_acount_field()

This is a micro optimazation for a hot path.

- We don't need to check if @ca returned from task_ca() is NULL.
- We don't need to check if @ca returned from parent_ca() is NULL.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/515536B7.6060602@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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