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-rw-r--r--include/asm-ppc/semaphore.h111
1 files changed, 0 insertions, 111 deletions
diff --git a/include/asm-ppc/semaphore.h b/include/asm-ppc/semaphore.h
deleted file mode 100644
index 89e6e73be08..00000000000
--- a/include/asm-ppc/semaphore.h
+++ /dev/null
@@ -1,111 +0,0 @@
-#ifndef _PPC_SEMAPHORE_H
-#define _PPC_SEMAPHORE_H
-
-/*
- * Swiped from asm-sparc/semaphore.h and modified
- * -- Cort (cort@cs.nmt.edu)
- *
- * Stole some rw spinlock-based semaphore stuff from asm-alpha/semaphore.h
- * -- Ani Joshi (ajoshi@unixbox.com)
- *
- * Remove spinlock-based RW semaphores; RW semaphore definitions are
- * now in rwsem.h and we use the generic lib/rwsem.c implementation.
- * Rework semaphores to use atomic_dec_if_positive.
- * -- Paul Mackerras (paulus@samba.org)
- */
-
-#ifdef __KERNEL__
-
-#include <asm/atomic.h>
-#include <asm/system.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, n) \
-{ \
- .count = ATOMIC_INIT(n), \
- .wait = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) \
-}
-
-#define __MUTEX_INITIALIZER(name) \
- __SEMAPHORE_INITIALIZER(name, 1)
-
-#define __DECLARE_SEMAPHORE_GENERIC(name, count) \
- struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
-
-#define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name, 1)
-#define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name, 0)
-
-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);
-}
-
-extern void __down(struct semaphore * sem);
-extern int __down_interruptible(struct semaphore * sem);
-extern void __up(struct semaphore * sem);
-
-extern inline void down(struct semaphore * sem)
-{
- might_sleep();
-
- /*
- * Try to get the semaphore, take the slow path if we fail.
- */
- if (atomic_dec_return(&sem->count) < 0)
- __down(sem);
- smp_wmb();
-}
-
-extern inline int down_interruptible(struct semaphore * sem)
-{
- int ret = 0;
-
- might_sleep();
-
- if (atomic_dec_return(&sem->count) < 0)
- ret = __down_interruptible(sem);
- smp_wmb();
- return ret;
-}
-
-extern inline int down_trylock(struct semaphore * sem)
-{
- int ret;
-
- ret = atomic_dec_if_positive(&sem->count) < 0;
- smp_wmb();
- return ret;
-}
-
-extern inline void up(struct semaphore * sem)
-{
- smp_wmb();
- if (atomic_inc_return(&sem->count) <= 0)
- __up(sem);
-}
-
-#endif /* __KERNEL__ */
-
-#endif /* !(_PPC_SEMAPHORE_H) */