arm64: kconfig: select HAVE_CMPXCHG_LOCAL

We implement an optimised cmpxchg_local macro, so let the kernel know.

Reviewed-by: Steve Capper <steve.capper@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 8dabffa82ef810842e8961b60e9812b3384c326a..e82b98dfc028b6d3abda9e261a58f6c842b85e0c 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -53,6 +53,7 @@ config ARM64
        select HAVE_C_RECORDMCOUNT
        select HAVE_CC_STACKPROTECTOR
        select HAVE_CMPXCHG_DOUBLE
+       select HAVE_CMPXCHG_LOCAL
        select HAVE_DEBUG_BUGVERBOSE
        select HAVE_DEBUG_KMEMLEAK
        select HAVE_DMA_API_DEBUG