From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Thu, 2 Feb 2012 16:26:06 +0000 (-0800)
Subject: rcu: Remove redundant check for rcu_head misalignment
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ce5df97be530e4746bf9a4ac14589a1cfdfd8efc;p=linux.git

rcu: Remove redundant check for rcu_head misalignment

There is now an unconditional check for rcu_head misalignment in
__call_rcu(), so remove the old conditional one in debug_rcu_head_queue().

Reported-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---

diff --git a/kernel/rcu.h b/kernel/rcu.h
index a074b0b43fc2c..30876f4063b66 100644
--- a/kernel/rcu.h
+++ b/kernel/rcu.h
@@ -50,7 +50,6 @@ extern struct debug_obj_descr rcuhead_debug_descr;
 
 static inline void debug_rcu_head_queue(struct rcu_head *head)
 {
-	WARN_ON_ONCE((unsigned long)head & 0x3);
 	debug_object_activate(head, &rcuhead_debug_descr);
 	debug_object_active_state(head, &rcuhead_debug_descr,
 				  STATE_RCU_HEAD_READY,