diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2015-11-04 08:22:05 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-12-07 17:01:32 -0800 |
| commit | e11f13355b09df970495c45ed0eac1dc85dcf5c1 (patch) | |
| tree | ddb524a993db0cbda01426fa992a8702325ea2b1 /kernel/rcu/tree.c | |
| parent | f039f0af081746933d5dec3229637a18fab791ed (diff) | |
| download | linux-e11f13355b09df970495c45ed0eac1dc85dcf5c1.tar.bz2 | |
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/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 2 |
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(); |