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sched: Remove rcu_read_lock() from wake_affine() 

wake_affine() is only called from one path: select_task_rq_fair(),
which already has the RCU read lock held.

Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20110607101251.777.34547.stgit@IBM-009124035060.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Nikunj A. Dadhania 2011-06-07 15:43:22 +05:30 committed by Ingo Molnar
parent 36b2e922b5
commit 2a46dae380
1 changed files with 0 additions and 2 deletions
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2
kernel/sched_fair.c
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@ -1481,7 +1481,6 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
* effect of the currently running task from the load
* of the current CPU:
*/
rcu_read_lock();
if (sync) {
tg = task_group(current);
weight = current->se.load.weight;
@ -1517,7 +1516,6 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
balanced = this_eff_load <= prev_eff_load;
} else
balanced = true;
rcu_read_unlock();
/*
* If the currently running task will sleep within