patch-2.3.1 linux/include/asm-sparc/semaphore.h

• Lines: 110
• Date: Wed May 12 08:41:15 1999
• Orig file: v2.3.0/linux/include/asm-sparc/semaphore.h
• Orig date: Wed Mar 10 16:53:37 1999

diff -u --recursive --new-file v2.3.0/linux/include/asm-sparc/semaphore.h linux/include/asm-sparc/semaphore.h
@@ -6,28 +6,71 @@
 #ifdef __KERNEL__
 
 #include <asm/atomic.h>
+#include <linux/wait.h>
 
 struct semaphore {
 	atomic_t count;
 	atomic_t waking;
-	struct wait_queue * wait;
+	wait_queue_head_t wait;
+#if WAITQUEUE_DEBUG
+	long __magic;
+#endif
 };
 
-#define MUTEX ((struct semaphore) { ATOMIC_INIT(1), ATOMIC_INIT(0), NULL })
-#define MUTEX_LOCKED ((struct semaphore) { ATOMIC_INIT(0), ATOMIC_INIT(0), NULL })
+#if WAITQUEUE_DEBUG
+# define __SEM_DEBUG_INIT(name) \
+		, (long)&(name).__magic
+#else
+# define __SEM_DEBUG_INIT(name)
+#endif
+
+#define __SEMAPHORE_INITIALIZER(name,count) \
+{ ATOMIC_INIT(count), ATOMIC_INIT(0), __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) \
+	__SEM_DEBUG_INIT(name) }
+
+#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)
+
+extern inline void sema_init (struct semaphore *sem, int val)
+{
+	atomic_set(&sem->count, val);
+	atomic_set(&sem->waking, 0);
+	init_waitqueue_head(&sem->wait);
+#if WAITQUEUE_DEBUG
+	sem->__magic = (long)&sem->__magic;
+#endif
+}
+
+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 int __down_trylock(struct semaphore * sem);
 extern void __up(struct semaphore * sem);
 
-#define sema_init(sem, val)	atomic_set(&((sem)->count), val)
-
 extern inline void down(struct semaphore * sem)
 {
 	register atomic_t *ptr asm("g1");
 	register int increment asm("g2");
 
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	ptr = (atomic_t *) __atomic_fool_gcc(sem);
 	increment = 1;
 
@@ -59,6 +102,10 @@
 	register atomic_t *ptr asm("g1");
 	register int increment asm("g2");
 
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	ptr = (atomic_t *) __atomic_fool_gcc(sem);
 	increment = 1;
 
@@ -93,6 +140,10 @@
 	register atomic_t *ptr asm("g1");
 	register int increment asm("g2");
 
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	ptr = (atomic_t *) __atomic_fool_gcc(sem);
 	increment = 1;
 
@@ -126,6 +177,10 @@
 {
 	register atomic_t *ptr asm("g1");
 	register int increment asm("g2");
+
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
 
 	ptr = (atomic_t *) __atomic_fool_gcc(sem);
 	increment = 1;