[PATCH v7 2/4] spinlock: Enable x86 architecture to do lockless refcount update

[Waiman Long]

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 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

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