Messages in this thread Patch in this message | | | From | "Nikunj A. Dadhania" <> | Subject | [PATCH] sched: Remove rcu_read_lock/unlock() from select_idle_sibling() | Date | Fri, 17 Feb 2012 08:34:30 +0530 |
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select_idle_sibling() is called from select_task_rq_fair(), which already has the RCU read lock held.
Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com> ---
kernel/sched/fair.c | 4 ---- 1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4ab60a2..6ce9992 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; }
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