Commit 0772324a authored Jan 07, 2013 by Tejun Heo

cpuset: remove fast exit path from remove_tasks_in_empty_cpuset()



The function isn't that hot, the overhead of missing the fast exit is
low, the test itself depends heavily on cgroup internals, and it's
gonna be a hindrance when trying to decouple cpuset locking from
cgroup core.  Remove the fast exit path.

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

parent 01c889cf

kernel/cpuset.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -1967,14 +1967,6 @@ static void remove_tasks_in_empty_cpuset(struct cpuset *cs)
		{
		struct cpuset *parent;

		/*
		* The cgroup's css_sets list is in use if there are tasks
		* in the cpuset; the list is empty if there are none;
		* the cs->css.refcnt seems always 0.
		*/
		if (list_empty(&cs->css.cgroup->css_sets))
		return;

		/*
		* Find its next-highest non-empty parent, (top cpuset
		* has online cpus, so can't be empty).