diff --git a/[refs] b/[refs]
index ba54464c1762..d13d89c858c2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5b0753a90b7a98bc613c3767e9263a1a76d4f900
+refs/heads/master: fbe752188d5589e7fcbb8e79824e560f77dccc92
diff --git a/trunk/arch/parisc/kernel/process.c b/trunk/arch/parisc/kernel/process.c
index 2c05a9292a81..8c6b6b6561f0 100644
--- a/trunk/arch/parisc/kernel/process.c
+++ b/trunk/arch/parisc/kernel/process.c
@@ -48,6 +48,7 @@
 #include <linux/unistd.h>
 #include <linux/kallsyms.h>
 #include <linux/uaccess.h>
+#include <linux/rcupdate.h>
 
 #include <asm/io.h>
 #include <asm/asm-offsets.h>
@@ -69,8 +70,10 @@ void cpu_idle(void)
 
 	/* endless idle loop with no priority at all */
 	while (1) {
+		rcu_idle_enter();
 		while (!need_resched())
 			barrier();
+		rcu_idle_exit();
 		schedule_preempt_disabled();
 		check_pgt_cache();
 	}