linux-kernel - [PATCH 2.5/2] generic-smp: remove cfd rcu

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Message-Id: <1234622807.4698.32.camel@laptop>
Date:	Sat, 14 Feb 2009 15:46:47 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Nick Piggin <npiggin@...e.de>, Jens Axboe <jens.axboe@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Rusty Russell <rusty@...tcorp.com.au>,
	linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...hat.com>
Subject: [PATCH 2.5/2] generic-smp: remove cfd rcu_head

Subject: generic-smp: remove cfd rcu_head
From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Date: Sat Feb 14 15:41:24 CET 2009

Since we no longer use call_rcu() on call_function_data, we can remove the
rcu_head structure from it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
---
 kernel/smp.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Index: linux-2.6/kernel/smp.c
===================================================================
--- linux-2.6.orig/kernel/smp.c
+++ linux-2.6/kernel/smp.c
@@ -39,10 +39,7 @@ struct call_function_data {
 	struct call_single_data csd;
 	spinlock_t lock;
 	unsigned int refs;
-	union {
-		struct rcu_head rcu_head;
-		unsigned int stamp;
-	};
+	unsigned int stamp;
 	struct cpumask cpumask;
 };
 


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