diff --git a/include/osdep_service_linux.h b/include/osdep_service_linux.h
index 4a51c1d..7826e79 100644
--- a/include/osdep_service_linux.h
+++ b/include/osdep_service_linux.h
@@ -125,7 +125,11 @@
 
 
 typedef struct	semaphore _sema;
+#ifdef CONFIG_PREEMPT_RT
+typedef	raw_spinlock_t	_lock;
+#else
 typedef	spinlock_t	_lock;
+#endif
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37))
 	typedef struct mutex		_mutex;
 #else
@@ -202,6 +206,23 @@ __inline static _list	*get_list_head(_queue	*queue)
 	((type *)((char *)(ptr)-(SIZE_T)(&((type *)0)->member)))
 
 
+#ifdef CONFIG_PREEMPT_RT
+__inline static void _enter_critical(_lock *plock, unsigned long *pirqL)
+{
+	raw_spin_lock_irqsave(plock, *pirqL);
+}
+
+__inline static void _exit_critical(_lock *plock, unsigned long *pirqL)
+{
+	raw_spin_unlock_irqrestore(plock, *pirqL);
+}
+
+__inline static void _enter_critical_ex(_lock *plock, unsigned long *pirqL)
+{
+	raw_spin_lock_irqsave(plock, *pirqL);
+}
+
+#else
 __inline static void _enter_critical(_lock *plock, unsigned long *pirqL)
 {
 	spin_lock_irqsave(plock, *pirqL);
@@ -217,6 +238,7 @@ __inline static void _enter_critical_ex(_lock *plock, unsigned long *pirqL)
 	spin_lock_irqsave(plock, *pirqL);
 }
 
+#endif
 __inline static void _exit_critical_ex(_lock *plock, unsigned long *pirqL)
 {
 	spin_unlock_irqrestore(plock, *pirqL);