diff --git a/[refs] b/[refs]
index 9463b1a42d06..eab0e4305552 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dc4304f7deee29fcdf6a2b62f7146ea7f505fd42
+refs/heads/master: 40b8606253552109815786e5d4b0de98782d31f5
diff --git a/trunk/include/linux/hrtimer.h b/trunk/include/linux/hrtimer.h
index 508ce20b8f9c..1e6f731381d9 100644
--- a/trunk/include/linux/hrtimer.h
+++ b/trunk/include/linux/hrtimer.h
@@ -20,6 +20,8 @@
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/wait.h>
+#include <linux/percpu.h>
+
 
 struct hrtimer_clock_base;
 struct hrtimer_cpu_base;