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@xxxxxxxxxx> --- kernel/cpuset.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/kernel/cpuset.c b/kernel/cpuset.c index a423774..54b2b73 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1968,14 +1968,6 @@ 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). */ -- 1.7.11.7 _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
