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authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-18 08:25:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-18 08:25:29 -0700
commitd7bb545d86825e635cab33a1dd81ca0ad7b92887 (patch)
tree34da4139ef06ceab6549aea3906639c7413978c8 /include/asm-cris/semaphore-helper.h
parent75e98b34155264d943aa53edce465e87f3ccbadf (diff)
parent2342e51ba2b52a7f5b78227e6faa4603ed3632a0 (diff)
Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc
* 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Remove DEBUG_SEMAPHORE from Kconfig Improve semaphore documentation Simplify semaphore implementation Add down_timeout and change ACPI to use it Introduce down_killable() Generic semaphore implementation Add semaphore.h to kernel_lock.c Fix quota.h includes
Diffstat (limited to 'include/asm-cris/semaphore-helper.h')
-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 27bfeca1b98..00000000000
--- a/include/asm-cris/semaphore-helper.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/* $Id: semaphore-helper.h,v 1.3 2001/03/26 15:00:33 orjanf Exp $
- *
- * SMP- and interrupt-safe semaphores helper functions. Generic versions, no
- * optimizations whatsoever...
- *
- */
-
-#ifndef _ASM_SEMAPHORE_HELPER_H
-#define _ASM_SEMAPHORE_HELPER_H
-
-#include <asm/atomic.h>
-#include <linux/errno.h>
-
-#define read(a) ((a)->counter)
-#define inc(a) (((a)->counter)++)
-#define dec(a) (((a)->counter)--)
-
-#define count_inc(a) ((*(a))++)
-
-/*
- * These two _must_ execute atomically wrt each other.
- */
-static inline void wake_one_more(struct semaphore * sem)
-{
- atomic_inc(&sem->waking);
-}
-
-static inline int waking_non_zero(struct semaphore *sem)
-{
- unsigned long flags;
- int ret = 0;
-
- local_irq_save(flags);
- if (read(&sem->waking) > 0) {
- dec(&sem->waking);
- ret = 1;
- }
- local_irq_restore(flags);
- return ret;
-}
-
-static inline int waking_non_zero_interruptible(struct semaphore *sem,
- struct task_struct *tsk)
-{
- int ret = 0;
- unsigned long flags;
-
- local_irq_save(flags);
- if (read(&sem->waking) > 0) {
- dec(&sem->waking);
- ret = 1;
- } else if (signal_pending(tsk)) {
- inc(&sem->count);
- ret = -EINTR;
- }
- local_irq_restore(flags);
- return ret;
-}
-
-static inline int waking_non_zero_trylock(struct semaphore *sem)
-{
- int ret = 1;
- unsigned long flags;
-
- local_irq_save(flags);
- if (read(&sem->waking) <= 0)
- inc(&sem->count);
- else {
- dec(&sem->waking);
- ret = 0;
- }
- local_irq_restore(flags);
- return ret;
-}
-
-#endif /* _ASM_SEMAPHORE_HELPER_H */
-
-