From: Vineet Gupta <vgupta@synopsys.com>
Date: Sat, 8 Aug 2015 12:21:58 +0000 (+0530)
Subject: ARC: Enable optimistic spinning for LLSC config
X-Git-Tag: firefly_0821_release~176^2~1188^2~18
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2a4401687c11def29fe5a9b23ab98bf7ab1dce61;p=firefly-linux-kernel-4.4.55.git

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 bd4670d1b89b..e119d42f92ce 100644
--- 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