diff --git a/[refs] b/[refs]
index 1a17ab4c8fd9..1038b6f500c3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 11ad47a0edbd62bfc0547cfcdf227a911433f207
+refs/heads/master: 93482f4ef1093f5961a63359a34612183d6beea0
diff --git a/trunk/arch/ia64/kernel/process.c b/trunk/arch/ia64/kernel/process.c
index dd6fc1449741..3e316ec0b835 100644
--- a/trunk/arch/ia64/kernel/process.c
+++ b/trunk/arch/ia64/kernel/process.c
@@ -29,6 +29,7 @@
 #include <linux/kdebug.h>
 #include <linux/utsname.h>
 #include <linux/tracehook.h>
+#include <linux/rcupdate.h>
 
 #include <asm/cpu.h>
 #include <asm/delay.h>
@@ -279,6 +280,7 @@ cpu_idle (void)
 
 	/* endless idle loop with no priority at all */
 	while (1) {
+		rcu_idle_enter();
 		if (can_do_pal_halt) {
 			current_thread_info()->status &= ~TS_POLLING;
 			/*
@@ -309,6 +311,7 @@ cpu_idle (void)
 			normal_xtp();
 #endif
 		}
+		rcu_idle_exit();
 		schedule_preempt_disabled();
 		check_pgt_cache();
 		if (cpu_is_offline(cpu))