linux-kernel - [PATCH] rcu: call __rcu_read_unlock() in exit

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Message-ID: <4D22DB19.3000300@cn.fujitsu.com>
Date:	Tue, 04 Jan 2011 16:32:25 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Subject: [PATCH] rcu: call __rcu_read_unlock() in exit_rcu()


rcu_read_unlock() is a wrapper of many things:
	the core __rcu_read_unlock(), debugs...etc.

It is better that we only calls the core __rcu_read_unlock() here.

signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index a363871..94035a0 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -802,7 +802,7 @@ void exit_rcu(void)
 	if (t->rcu_read_lock_nesting == 0)
 		return;
 	t->rcu_read_lock_nesting = 1;
-	rcu_read_unlock();
+	__rcu_read_unlock();
 }
 
 #else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
--
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