fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-sparc64 / rwsem.h

diff --git a/include/asm-sparc64/rwsem.h b/include/asm-sparc64/rwsem.h
index cef5e82..1294b7c 100644 (file)
--- a/include/asm-sparc64/rwsem.h
+++ b/include/asm-sparc64/rwsem.h
@@ -23,20 +23,33 @@ struct rw_semaphore {
        signed int count;
        spinlock_t              wait_lock;
        struct list_head        wait_list;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+       struct lockdep_map      dep_map;
+#endif
 };
 
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
+#else
+# define __RWSEM_DEP_MAP_INIT(lockname)
+#endif
+
 #define __RWSEM_INITIALIZER(name) \
-{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) }
+{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) \
+  __RWSEM_DEP_MAP_INIT(name) }
 
 #define DECLARE_RWSEM(name) \
        struct rw_semaphore name = __RWSEM_INITIALIZER(name)
 
-static __inline__ void init_rwsem(struct rw_semaphore *sem)
-{
-       sem->count = RWSEM_UNLOCKED_VALUE;
-       spin_lock_init(&sem->wait_lock);
-       INIT_LIST_HEAD(&sem->wait_list);
-}
+extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
+                        struct lock_class_key *key);
+
+#define init_rwsem(sem)                                                \
+do {                                                           \
+       static struct lock_class_key __key;                     \
+                                                               \
+       __init_rwsem((sem), #sem, &__key);                      \
+} while (0)
 
 extern void __down_read(struct rw_semaphore *sem);
 extern int __down_read_trylock(struct rw_semaphore *sem);
@@ -46,6 +59,11 @@ extern void __up_read(struct rw_semaphore *sem);
 extern void __up_write(struct rw_semaphore *sem);
 extern void __downgrade_write(struct rw_semaphore *sem);
 
+static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
+{
+       __down_write(sem);
+}
+
 static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
 {
        return atomic_add_return(delta, (atomic_t *)(&sem->count));