arm64: lockref: add support for lockless lockrefs using cmpxchg

[~andy/linux] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index ae323a45c28c2dac8c18a71c2c1f7a526132536e..9e8233b3f1884e67f94c70372f64c3352a412d15 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1,6 +1,7 @@
 config ARM64
        def_bool y
        select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+       select ARCH_USE_CMPXCHG_LOCKREF
        select ARCH_WANT_OPTIONAL_GPIOLIB
        select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
        select ARCH_WANT_FRAME_POINTERS
@@ -23,7 +24,6 @@ config ARM64
        select HAVE_DMA_API_DEBUG
        select HAVE_DMA_ATTRS
        select HAVE_GENERIC_DMA_COHERENT
-       select HAVE_GENERIC_HARDIRQS
        select HAVE_HW_BREAKPOINT if PERF_EVENTS
        select HAVE_MEMBLOCK
        select HAVE_PERF_EVENTS