Index: defaults/special/Makefile.config
===================================================================
--- defaults/special/Makefile.config	(revision a63d216495adb3387eab99c836001a569678383b)
+++ defaults/special/Makefile.config	(revision 2a5d1751090211ae7f388acdeff5287ff75e2b8f)
@@ -28,2 +28,6 @@
 # Compile kernel tests
 CONFIG_TEST = y
+
+# Kernel RCU implementation
+RCU = PREEMPT_A
+