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-rw-r--r--include/asm-cris/semaphore-helper.h78
1 files changed, 0 insertions, 78 deletions
diff --git a/include/asm-cris/semaphore-helper.h b/include/asm-cris/semaphore-helper.h
deleted file mode 100644
index 27bfeca1b981..000000000000
--- a/include/asm-cris/semaphore-helper.h
+++ /dev/null
@@ -1,78 +0,0 @@
1/* $Id: semaphore-helper.h,v 1.3 2001/03/26 15:00:33 orjanf Exp $
2 *
3 * SMP- and interrupt-safe semaphores helper functions. Generic versions, no
4 * optimizations whatsoever...
5 *
6 */
7
8#ifndef _ASM_SEMAPHORE_HELPER_H
9#define _ASM_SEMAPHORE_HELPER_H
10
11#include <asm/atomic.h>
12#include <linux/errno.h>
13
14#define read(a) ((a)->counter)
15#define inc(a) (((a)->counter)++)
16#define dec(a) (((a)->counter)--)
17
18#define count_inc(a) ((*(a))++)
19
20/*
21 * These two _must_ execute atomically wrt each other.
22 */
23static inline void wake_one_more(struct semaphore * sem)
24{
25 atomic_inc(&sem->waking);
26}
27
28static inline int waking_non_zero(struct semaphore *sem)
29{
30 unsigned long flags;
31 int ret = 0;
32
33 local_irq_save(flags);
34 if (read(&sem->waking) > 0) {
35 dec(&sem->waking);
36 ret = 1;
37 }
38 local_irq_restore(flags);
39 return ret;
40}
41
42static inline int waking_non_zero_interruptible(struct semaphore *sem,
43 struct task_struct *tsk)
44{
45 int ret = 0;
46 unsigned long flags;
47
48 local_irq_save(flags);
49 if (read(&sem->waking) > 0) {
50 dec(&sem->waking);
51 ret = 1;
52 } else if (signal_pending(tsk)) {
53 inc(&sem->count);
54 ret = -EINTR;
55 }
56 local_irq_restore(flags);
57 return ret;
58}
59
60static inline int waking_non_zero_trylock(struct semaphore *sem)
61{
62 int ret = 1;
63 unsigned long flags;
64
65 local_irq_save(flags);
66 if (read(&sem->waking) <= 0)
67 inc(&sem->count);
68 else {
69 dec(&sem->waking);
70 ret = 0;
71 }
72 local_irq_restore(flags);
73 return ret;
74}
75
76#endif /* _ASM_SEMAPHORE_HELPER_H */
77
78