Merge branches 'bkl-removal', 'cma', 'ehca', 'for-2.6.27', 'mlx4', 'mthca' and 'nes...

[pandora-kernel.git] / include / asm-s390 / semaphore.h

diff --git a/include/asm-s390/semaphore.h b/include/asm-s390/semaphore.h
index 0e7001a..d9b2034 100644 (file)
--- a/include/asm-s390/semaphore.h
+++ b/include/asm-s390/semaphore.h
@@ -1,107 +1 @@
-/*
- *  include/asm-s390/semaphore.h
- *
- *  S390 version
- *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *
- *  Derived from "include/asm-i386/semaphore.h"
- *    (C) Copyright 1996 Linus Torvalds
- */
-
-#ifndef _S390_SEMAPHORE_H
-#define _S390_SEMAPHORE_H
-
-#include <asm/system.h>
-#include <asm/atomic.h>
-#include <linux/wait.h>
-#include <linux/rwsem.h>
-
-struct semaphore {
-       /*
-        * Note that any negative value of count is equivalent to 0,
-        * but additionally indicates that some process(es) might be
-        * sleeping on `wait'.
-        */
-       atomic_t count;
-       wait_queue_head_t wait;
-};
-
-#define __SEMAPHORE_INITIALIZER(name,count) \
-       { ATOMIC_INIT(count), __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) }
-
-#define __DECLARE_SEMAPHORE_GENERIC(name,count) \
-       struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
-
-#define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1)
-
-static inline void sema_init (struct semaphore *sem, int val)
-{
-       atomic_set(&sem->count, val);
-       init_waitqueue_head(&sem->wait);
-}
-
-static inline void init_MUTEX (struct semaphore *sem)
-{
-       sema_init(sem, 1);
-}
-
-static inline void init_MUTEX_LOCKED (struct semaphore *sem)
-{
-       sema_init(sem, 0);
-}
-
-asmlinkage void __down(struct semaphore * sem);
-asmlinkage int  __down_interruptible(struct semaphore * sem);
-asmlinkage int  __down_trylock(struct semaphore * sem);
-asmlinkage void __up(struct semaphore * sem);
-
-static inline void down(struct semaphore * sem)
-{
-       might_sleep();
-       if (atomic_dec_return(&sem->count) < 0)
-               __down(sem);
-}
-
-static inline int down_interruptible(struct semaphore * sem)
-{
-       int ret = 0;
-
-       might_sleep();
-       if (atomic_dec_return(&sem->count) < 0)
-               ret = __down_interruptible(sem);
-       return ret;
-}
-
-static inline int down_trylock(struct semaphore * sem)
-{
-       int old_val, new_val;
-
-       /*
-        * This inline assembly atomically implements the equivalent
-        * to the following C code:
-        *   old_val = sem->count.counter;
-        *   if ((new_val = old_val) > 0)
-        *       sem->count.counter = --new_val;
-        * In the ppc code this is called atomic_dec_if_positive.
-        */
-       asm volatile(
-               "       l       %0,0(%3)\n"
-               "0:     ltr     %1,%0\n"
-               "       jle     1f\n"
-               "       ahi     %1,-1\n"
-               "       cs      %0,%1,0(%3)\n"
-               "       jl      0b\n"
-               "1:"
-               : "=&d" (old_val), "=&d" (new_val), "=m" (sem->count.counter)
-               : "a" (&sem->count.counter), "m" (sem->count.counter)
-               : "cc", "memory");
-       return old_val <= 0;
-}
-
-static inline void up(struct semaphore * sem)
-{
-       if (atomic_inc_return(&sem->count) <= 0)
-               __up(sem);
-}
-
-#endif
+#include <linux/semaphore.h>