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cpuset: remove fast exit path from remove_tasks_in_empty_cpuset()

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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>
This commit is contained in:
Tejun Heo 2013-01-07 08:51:07 -08:00
parent 01c889cf4f
commit 0772324ae6
1 changed files with 0 additions and 8 deletions
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8
kernel/cpuset.c
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@ -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).