linux-kernel - [RFC PATCH 3/5] kernel/rcu/tree_plugin.h:990 fix a sparse warning

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Date:	Wed, 11 Jun 2014 16:39:41 -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 3/5] kernel/rcu/tree_plugin.h:990 fix a sparse warning

kernel/rcu/tree_plugin.h:990:13: warning: context imbalance in 'rcu_report_unblock_qs_rnp' - unexpected unlock

by annotating the function with __releases()

Signed-off-by: Pranith Kumar <bobby.prani@...il.com>
---
 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 0c955d9..9f85469 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -988,6 +988,7 @@ static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp)
 
 /* Because preemptible RCU does not exist, no quieting of tasks. */
 static void rcu_report_unblock_qs_rnp(struct rcu_node *rnp, unsigned long flags)
+	__releases(rnp->lock)
 {
 	raw_spin_unlock_irqrestore(&rnp->lock, flags);
 }
-- 
1.9.1

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