ARC: Enable optimistic spinning for LLSC config

Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index bd4670d..e119d42 100644 (file)
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -8,6 +8,7 @@
 
 config ARC
        def_bool y
+       select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
        select BUILDTIME_EXTABLE_SORT
        select COMMON_CLK
        select CLONE_BACKWARDS