This patch is intended to fix a deadlock seen in -rt. Untested, might not even compile. The intent is to move kthread_stop() outside of the CPU-hotplug lock, thus preventing deadlocks involving sleeping spinlocks. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 8c26a49..e0d514b 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -2041,8 +2041,7 @@ static int __cpuinit rcu_cpu_notify(struct notifier_block *self, rcu_send_cbs_to_online(&rcu_sched_state); rcu_preempt_send_cbs_to_online(); break; - case CPU_DEAD: - case CPU_DEAD_FROZEN: + case CPU_POST_DEAD: case CPU_UP_CANCELED: case CPU_UP_CANCELED_FROZEN: rcu_offline_cpu(cpu); -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
