[PATCH v6 02/14] spinlock: Enable x86 architecture to do lockless refcount update

From: Waiman Long
Date: Mon Jul 08 2013 - 21:19:43 EST


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@xxxxxx>
---
arch/x86/Kconfig | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 265c672..6a86061 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -261,6 +261,9 @@ 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

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