]> err.no Git - linux-2.6/blobdiff - include/asm-sparc64/rwsem.h
checkpatch: allow for type modifiers on multiple declarations
[linux-2.6] / include / asm-sparc64 / rwsem.h
index 1dc129ac2feb0aab36a2111c419647e851db7359..6943c56ed087f1007912a0a5980972ba0cb8bf33 100644 (file)
@@ -1,84 +1 @@
-/*
- * rwsem.h: R/W semaphores implemented using CAS
- *
- * Written by David S. Miller (davem@redhat.com), 2001.
- * Derived from asm-i386/rwsem.h
- */
-#ifndef _SPARC64_RWSEM_H
-#define _SPARC64_RWSEM_H
-
-#ifndef _LINUX_RWSEM_H
-#error "please don't include asm/rwsem.h directly, use linux/rwsem.h instead"
-#endif
-
-#ifdef __KERNEL__
-
-#include <linux/list.h>
-#include <linux/spinlock.h>
-#include <asm/rwsem-const.h>
-
-struct rwsem_waiter;
-
-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_DEP_MAP_INIT(name) }
-
-#define DECLARE_RWSEM(name) \
-       struct rw_semaphore name = __RWSEM_INITIALIZER(name)
-
-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);
-extern void __down_write(struct rw_semaphore *sem);
-extern int __down_write_trylock(struct rw_semaphore *sem);
-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));
-}
-
-static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
-{
-       atomic_add(delta, (atomic_t *)(&sem->count));
-}
-
-static inline int rwsem_is_locked(struct rw_semaphore *sem)
-{
-       return (sem->count != 0);
-}
-
-#endif /* __KERNEL__ */
-
-#endif /* _SPARC64_RWSEM_H */
+#include <asm-sparc/rwsem.h>