Signed-off-by: Vineet Gupta <[email protected]>
---
extra/Configs/Config.arc | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/extra/Configs/Config.arc b/extra/Configs/Config.arc
index 0c0bc71ce2fc..c263dbf46028 100644
--- a/extra/Configs/Config.arc
+++ b/extra/Configs/Config.arc
@@ -28,6 +28,14 @@ config CONFIG_ARC_CPU_HS
endchoice
+config CONFIG_ARC_HAS_ATOMICS
+ bool "Support for LLOCK/SCOND instructions"
+ default y
+ help
+ LLOCK/SCOND instructions are needed to implement atomic r-m-w
+ Otherwise libc needs kernel assisted atomic cmpxchg available
+ since v4.9 kernel
+
choice
prompt "MMU Page Size"
default CONFIG_ARC_PAGE_SIZE_8K
--
2.7.4
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