Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-v850/semaphore.h b/include/asm-v850/semaphore.h
new file mode 100644
index 0000000..c514062
--- /dev/null
+++ b/include/asm-v850/semaphore.h
@@ -0,0 +1,88 @@
+#ifndef __V850_SEMAPHORE_H__
+#define __V850_SEMAPHORE_H__
+
+#include <linux/linkage.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+#include <linux/rwsem.h>
+
+#include <asm/atomic.h>
+
+struct semaphore {
+ atomic_t count;
+ int sleepers;
+ wait_queue_head_t wait;
+};
+
+#define __SEMAPHORE_INITIALIZER(name,count) \
+ { ATOMIC_INIT (count), 0, \
+ __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)
+
+extern inline void sema_init (struct semaphore *sem, int val)
+{
+ *sem = (struct semaphore)__SEMAPHORE_INITIALIZER((*sem),val);
+}
+
+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);
+}
+
+/*
+ * special register calling convention
+ */
+asmlinkage void __down_failed (void);
+asmlinkage int __down_interruptible_failed (void);
+asmlinkage int __down_trylock_failed (void);
+asmlinkage void __up_wakeup (void);
+
+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);
+
+extern inline void down (struct semaphore * sem)
+{
+ might_sleep();
+ if (atomic_dec_return (&sem->count) < 0)
+ __down (sem);
+}
+
+extern 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;
+}
+
+extern inline int down_trylock (struct semaphore *sem)
+{
+ int ret = 0;
+ if (atomic_dec_return (&sem->count) < 0)
+ ret = __down_trylock (sem);
+ return ret;
+}
+
+extern inline void up (struct semaphore * sem)
+{
+ if (atomic_inc_return (&sem->count) <= 0)
+ __up (sem);
+}
+
+#endif /* __V850_SEMAPHORE_H__ */