summaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
authorPeter Zijlstra <peterz@infradead.org>2015-11-04 08:22:05 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-12-07 17:01:32 -0800
commite11f13355b09df970495c45ed0eac1dc85dcf5c1 (patch)
treeddb524a993db0cbda01426fa992a8702325ea2b1 /kernel
parentf039f0af081746933d5dec3229637a18fab791ed (diff)
downloadlinux-sh-e11f13355b09df970495c45ed0eac1dc85dcf5c1.tar.gz
rcu: Move wakeup out from under rnp->lock
This patch removes a potential deadlock hazard by moving the wake_up_process() in rcu_spawn_gp_kthread() out from under rnp->lock. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/rcu/tree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 40940b0d0310..87b604d0b0d2 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -4319,8 +4319,8 @@ static int __init rcu_spawn_gp_kthread(void)
sp.sched_priority = kthread_prio;
sched_setscheduler_nocheck(t, SCHED_FIFO, &sp);
}
- wake_up_process(t);
raw_spin_unlock_irqrestore(&rnp->lock, flags);
+ wake_up_process(t);
}
rcu_spawn_nocb_kthreads();
rcu_spawn_boost_kthreads();