diff --git a/[refs] b/[refs]
index b1caf36859de..e0666d57faed 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4c94cada48f7c660eca582be6032427a5e367117
+refs/heads/master: c633f9e788928e91ad11f44df29b47bbbe9550b0
diff --git a/trunk/arch/cris/kernel/process.c b/trunk/arch/cris/kernel/process.c
index 66fd01728790..7f65be6f7f17 100644
--- a/trunk/arch/cris/kernel/process.c
+++ b/trunk/arch/cris/kernel/process.c
@@ -25,6 +25,7 @@
 #include <linux/elfcore.h>
 #include <linux/mqueue.h>
 #include <linux/reboot.h>
+#include <linux/rcupdate.h>
 
 //#define DEBUG
 
@@ -74,6 +75,7 @@ void cpu_idle (void)
 {
 	/* endless idle loop with no priority at all */
 	while (1) {
+		rcu_idle_enter();
 		while (!need_resched()) {
 			void (*idle)(void);
 			/*
@@ -86,6 +88,7 @@ void cpu_idle (void)
 				idle = default_idle;
 			idle();
 		}
+		rcu_idle_exit();
 		schedule_preempt_disabled();
 	}
 }