X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Flinux%2Fspinlock_types.h;h=8a9aadbaf293844728041df3d6ae98d094ab9284;hb=051790eecc03aff6978763791d38c1daea94c2f8;hp=42be1116e051c4d4dd7bddaee1fba686026a6cdd;hpb=e4e17af3b7f8841279b5a429de14907e26845c39;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h
index 42be111..8a9aadb 100644
--- a/include/linux/spinlock_types.h
+++ b/include/linux/spinlock_types.h
@@ -11,6 +11,9 @@
 
 #include <linux/spinlock_types_raw.h>
 
+#ifndef CONFIG_PREEMPT_RT
+
+/* Non PREEMPT_RT kernels map spinlock to raw_spinlock */
 typedef struct spinlock {
 	union {
 		struct raw_spinlock rlock;
@@ -39,6 +42,29 @@ typedef struct spinlock {
 
 #define DEFINE_SPINLOCK(x)	spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
 
+#else /* !CONFIG_PREEMPT_RT */
+
+/* PREEMPT_RT kernels map spinlock to rt_mutex */
+#include <linux/rtmutex.h>
+
+typedef struct spinlock {
+	struct rt_mutex_base	lock;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+	struct lockdep_map	dep_map;
+#endif
+} spinlock_t;
+
+#define __SPIN_LOCK_UNLOCKED(name)				\
+	{							\
+		.lock = __RT_MUTEX_BASE_INITIALIZER(name.lock),	\
+		SPIN_DEP_MAP_INIT(name)				\
+	}
+
+#define DEFINE_SPINLOCK(name)					\
+	spinlock_t name = __SPIN_LOCK_UNLOCKED(name)
+
+#endif /* CONFIG_PREEMPT_RT */
+
 #include <linux/rwlock_types.h>
 
 #endif /* __LINUX_SPINLOCK_TYPES_H */