From 62f6536a630affe3176deb48554d27ee58b65077 Mon Sep 17 00:00:00 2001 From: "Nikunj A. Dadhania" Date: Fri, 17 Feb 2012 08:34:30 +0530 Subject: [PATCH] sched: Remove rcu_read_lock/unlock() from select_idle_sibling() select_idle_sibling() is called from select_task_rq_fair(), which already has the RCU read lock held. Signed-off-by: Nikunj A. Dadhania Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120217030409.11748.12491.stgit@abhimanyu Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4ab60a24ea49..6ce9992926d0 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2670,8 +2670,6 @@ static int select_idle_sibling(struct task_struct *p, int target) /* * Otherwise, iterate the domains and find an elegible idle cpu. */ - rcu_read_lock(); - sd = rcu_dereference(per_cpu(sd_llc, target)); for_each_lower_domain(sd) { sg = sd->groups; @@ -2693,8 +2691,6 @@ next: } while (sg != sd->groups); } done: - rcu_read_unlock(); - return target; } -- 2.34.1