diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 3aed8d737e1a..4ae7c2e7b72e 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -92,6 +92,7 @@ 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);
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 22d275c3f032..00c4e914ee96 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1140,12 +1140,12 @@ EXPORT_SYMBOL_GPL(rt_mutex_lock);
 /**
  * rt_mutex_lock_interruptible - lock a rt_mutex interruptible
  *
- * @lock: 		the rt_mutex to be locked
+ * @lock:		the rt_mutex to be locked
  * @detect_deadlock:	deadlock detection on/off
  *
  * Returns:
- *  0 		on success
- * -EINTR 	when interrupted by a signal
+ *  0		on success
+ * -EINTR	when interrupted by a signal
  * -EDEADLK	when the lock would deadlock (when deadlock detection is on)
  */
 int __sched rt_mutex_lock_interruptible(struct rt_mutex *lock,
@@ -1158,18 +1158,39 @@ int __sched rt_mutex_lock_interruptible(struct rt_mutex *lock,
 }
 EXPORT_SYMBOL_GPL(rt_mutex_lock_interruptible);
 
+/**
+ * rt_mutex_lock_killable - lock a rt_mutex killable
+ *
+ * @lock:		the rt_mutex to be locked
+ * @detect_deadlock:	deadlock detection on/off
+ *
+ * Returns:
+ *  0		on success
+ * -EINTR	when interrupted by a signal
+ * -EDEADLK	when the lock would deadlock (when deadlock detection is on)
+ */
+int __sched rt_mutex_lock_killable(struct rt_mutex *lock,
+				   int detect_deadlock)
+{
+	might_sleep();
+
+	return rt_mutex_fastlock(lock, TASK_KILLABLE,
+				 detect_deadlock, rt_mutex_slowlock);
+}
+EXPORT_SYMBOL_GPL(rt_mutex_lock_killable);
+
 /**
  * rt_mutex_timed_lock - lock a rt_mutex interruptible
  *			the timeout structure is provided
  *			by the caller
  *
- * @lock: 		the rt_mutex to be locked
+ * @lock:		the rt_mutex to be locked
  * @timeout:		timeout structure or NULL (no timeout)
  * @detect_deadlock:	deadlock detection on/off
  *
  * Returns:
- *  0 		on success
- * -EINTR 	when interrupted by a signal
+ *  0		on success
+ * -EINTR	when interrupted by a signal
  * -ETIMEDOUT	when the timeout expired
  * -EDEADLK	when the lock would deadlock (when deadlock detection is on)
  */