mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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 <nikunj@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120217030409.11748.12491.stgit@abhimanyu
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Nikunj A. Dadhania 2012-02-17 08:34:30 +05:30 committed by Ingo Molnar
parent 9388dc3047
commit 62f6536a63
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/sched/fair.c
View File

@ -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;
}