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!

1 files changed, 57 insertions, 0 deletions

diff --git a/include/asm-sparc64/semaphore.h b/include/asm-sparc64/semaphore.h
new file mode 100644
index 00000000000..7419dd88b49
--- /dev/null
+++ b/include/asm-sparc64/semaphore.h
@@ -0,0 +1,57 @@
+#ifndef _SPARC64_SEMAPHORE_H
+#define _SPARC64_SEMAPHORE_H
+
+/* These are actually reasonable on the V9.
+ *
+ * See asm-ppc/semaphore.h for implementation commentary,
+ * only sparc64 specific issues are commented here.
+ */
+#ifdef __KERNEL__
+
+#include <asm/atomic.h>
+#include <asm/system.h>
+#include <linux/wait.h>
+#include <linux/rwsem.h>
+
+struct semaphore {
+        atomic_t count;
+        wait_queue_head_t wait;
+};
+
+#define __SEMAPHORE_INITIALIZER(name, count) \
+        { ATOMIC_INIT(count), \
+          __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 up(struct semaphore *sem);
+extern void down(struct semaphore *sem);
+extern int down_trylock(struct semaphore *sem);
+extern int down_interruptible(struct semaphore *sem);
+
+#endif /* __KERNEL__ */
+
+#endif /* !(_SPARC64_SEMAPHORE_H) */