linux-kernel - [RFC PATCH 2/5] kernel/rcu/tree_plugin.h:1494 fix a sparse warning

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Date:	Wed, 11 Jun 2014 16:39:40 -0400
From:	Pranith Kumar <bobby.prani@...il.com>
To:	paulmck@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	Josh Triplett <josh@...htriplett.org>
Subject: [RFC PATCH 2/5] kernel/rcu/tree_plugin.h:1494 fix a sparse warning 

kernel/rcu/tree_plugin.h:1494:13: warning: context imbalance in 'rcu_initiate_boost' - unexpected unlock

by annotating the function with releases()

Signed-off-by: Pranith Kumar <bobby.prani@...il.com>
---
 kernel/rcu/tree_plugin.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index cbc2c45..0c955d9 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1256,6 +1256,7 @@ static int rcu_boost_kthread(void *arg)
  * about it going away.
  */
 static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags)
+	__releases(rnp->lock)
 {
 	struct task_struct *t;
 
@@ -1491,6 +1492,7 @@ static void rcu_prepare_kthreads(int cpu)
 #else /* #ifdef CONFIG_RCU_BOOST */
 
 static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags)
+	__releases(rnp->lock)
 {
 	raw_spin_unlock_irqrestore(&rnp->lock, flags);
 }
-- 
1.9.1

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