1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 281d8fd775e8..076359dc1c9f 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -88,6 +88,8 @@ extern void rt_mutex_destroy(struct rt_mutex *lock);
 extern void rt_mutex_lock(struct rt_mutex *lock);
 extern int rt_mutex_lock_interruptible(struct rt_mutex *lock,
                                                 int detect_deadlock);
+extern int rt_mutex_lock_killable(struct rt_mutex *lock,
+                                  int detect_deadlock);
 extern int rt_mutex_timed_lock(struct rt_mutex *lock,
                                         struct hrtimer_sleeper *timeout,
                                         int detect_deadlock);