From: Tejun Heo Date: Fri, 9 Aug 2013 00:11:24 +0000 (-0400) Subject: cgroup: add cgroup->dummy_css X-Git-Tag: v3.12-rc1~173^2~38 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67f4c36f83455b253445b2cb28ac9a2c4f85d99a;p=pandora-kernel.git cgroup: add cgroup->dummy_css cgroup subsystem API is being converted to use css (cgroup_subsys_state) as the main handle, which makes things a bit awkward for subsystem agnostic core features - the "cgroup.*" interface files and various iterations - a bit awkward as they don't have a css to use. This patch adds cgroup->dummy_css which has NULL ->ss and whose only role is pointing back to the cgroup. This will be used to support subsystem agnostic features on the coming css based API. css_parent() is updated to handle dummy_css's. Note that css will soon grow its own ->parent field and css_parent() will be made trivial. Signed-off-by: Tejun Heo Acked-by: Li Zefan --- Reading git-diff-tree failed