Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / kernel / locking / rwsem.h

diff --git a/kernel/kernel/locking/rwsem.h b/kernel/kernel/locking/rwsem.h
new file mode 100644 (file)
index 0000000..870ed9a
--- /dev/null
+++ b/kernel/kernel/locking/rwsem.h
@@ -0,0 +1,20 @@
+#ifdef CONFIG_RWSEM_SPIN_ON_OWNER
+static inline void rwsem_set_owner(struct rw_semaphore *sem)
+{
+       sem->owner = current;
+}
+
+static inline void rwsem_clear_owner(struct rw_semaphore *sem)
+{
+       sem->owner = NULL;
+}
+
+#else
+static inline void rwsem_set_owner(struct rw_semaphore *sem)
+{
+}
+
+static inline void rwsem_clear_owner(struct rw_semaphore *sem)
+{
+}
+#endif