From mboxrd@z Thu Jan  1 00:00:00 1970
From: Waiman Long <Waiman.Long@hp.com>
Subject: [PATCH v7 2/4] spinlock: Enable x86 architecture to do lockless refcount update
Date: Mon,  5 Aug 2013 23:12:37 -0400
Message-ID: <1375758759-29629-3-git-send-email-Waiman.Long@hp.com>
References: <1375758759-29629-1-git-send-email-Waiman.Long@hp.com>
Cc: Waiman Long <Waiman.Long@hp.com>, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Andi Kleen <andi@firstfloor.org>,
	"Chandramouleeswaran, Aswin" <aswin@hp.com>,
	"Norton, Scott J" <scott.norton@hp.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
	Jeff Layton <jlayton@redhat.com>,
	Miklos Szeredi <mszeredi@suse.cz>,
	Ingo Molnar <mingo@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <1375758759-29629-1-git-send-email-Waiman.Long@hp.com>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

This patch enables the x86 architecture to do lockless reference
count update using the generic lockref implementation with default
parameters. Only the x86/Kconfig file needs to be changed.

Signed-off-by: Waiman Long <Waiman.Long@hp.com>
---
 arch/x86/Kconfig |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index b32ebf9..79a9309 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -262,6 +262,9 @@ config ARCH_CPU_PROBE_RELEASE
 config ARCH_SUPPORTS_UPROBES
 	def_bool y
 
+config GENERIC_SPINLOCK_REFCOUNT
+	def_bool y
+
 source "init/Kconfig"
 source "kernel/Kconfig.freezer"
 
-- 
1.7.1