From: Li Zefan <lizefan@huawei.com>
Date: Sun, 9 Jun 2013 09:15:22 +0000 (+0800)
Subject: cpuset: introduce effective_{cpumask|nodemask}_cpuset()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~43^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=070b57fcacc9dfc23a180290079078373fb697e1;p=pandora-kernel.git

cpuset: introduce effective_{cpumask|nodemask}_cpuset()

effective_cpumask_cpuset() returns an ancestor cpuset which has
non-empty cpumask.

If a cpuset is empty and the tasks in it need to update their
cpus_allowed, they take on the ancestor cpuset's cpumask.

This currently won't change any behavior, but it will later allow us
to keep tasks in empty cpusets.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

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