|
|
@@ -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
|
Vineet Gupta