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>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 8dabffa82ef8..e82b98dfc028 100644
--- 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