From 92c0b889f2ff6898710d49458b6eae1de50895c6 Mon Sep 17 00:00:00 2001 From: Jules Irenge Date: Thu, 30 Jan 2020 00:30:09 +0000 Subject: [PATCH] rcu/nocb: Add missing annotation for rcu_nocb_bypass_unlock() Sparse reports warning at rcu_nocb_bypass_unlock() warning: context imbalance in rcu_nocb_bypass_unlock() - unexpected unlock The root cause is a missing annotation of rcu_nocb_bypass_unlock() which causes the warning. This commit therefore adds the missing __releases(&rdp->nocb_bypass_lock) annotation. Signed-off-by: Jules Irenge Signed-off-by: Paul E. McKenney Acked-by: Boqun Feng --- kernel/rcu/tree_plugin.h | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 6db2cad7dab7..384651915d74 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1530,6 +1530,7 @@ static bool rcu_nocb_bypass_trylock(struct rcu_data *rdp) * Release the specified rcu_data structure's ->nocb_bypass_lock. */ static void rcu_nocb_bypass_unlock(struct rcu_data *rdp) + __releases(&rdp->nocb_bypass_lock) { lockdep_assert_irqs_disabled(); raw_spin_unlock(&rdp->nocb_bypass_lock);