From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Mon, 10 Jan 2011 02:09:51 +0000 (-0800)
Subject: rcu: call __rcu_read_unlock() in exit_rcu for tiny RCU
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ba74f4d7e5125d04d453b4af69c53c533e6feb80;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

rcu: call __rcu_read_unlock() in exit_rcu for tiny RCU

Using __rcu_read_lock() in place of rcu_read_lock() leaves any debug
state as it really should be, namely with the lock still held.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---

diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h
index 015abaea962a..3cb8e362e883 100644
--- a/kernel/rcutiny_plugin.h
+++ b/kernel/rcutiny_plugin.h
@@ -852,7 +852,7 @@ 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_TINY_PREEMPT_RCU */