1 files changed, 0 insertions, 250 deletions
diff --git a/c_src/linux/wait.c b/c_src/linux/wait.c
deleted file mode 100644
index b1f002b9..00000000
--- a/c_src/linux/wait.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * Generic waiting primitives.
- *
- * (C) 2004 Nadia Yvette Chambers, Oracle
- */
-
-#include <linux/completion.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-
-static inline int waitqueue_active(wait_queue_head_t *q)
-{
-	return !list_empty(&q->task_list);
-}
-
-static inline void __add_wait_queue(wait_queue_head_t *head, wait_queue_t *new)
-{
-	list_add(&new->task_list, &head->task_list);
-}
-
-static inline void __add_wait_queue_tail(wait_queue_head_t *head,
-					 wait_queue_t *new)
-{
-	list_add_tail(&new->task_list, &head->task_list);
-}
-
-static inline void
-__add_wait_queue_tail_exclusive(wait_queue_head_t *q, wait_queue_t *wait)
-{
-	wait->flags |= WQ_FLAG_EXCLUSIVE;
-	__add_wait_queue_tail(q, wait);
-}
-
-static inline void
-__remove_wait_queue(wait_queue_head_t *head, wait_queue_t *old)
-{
-	list_del(&old->task_list);
-}
-
-static void __wake_up_common(wait_queue_head_t *q, unsigned int mode,
-			     int nr_exclusive, int wake_flags, void *key)
-{
-	wait_queue_t *curr, *next;
-
-	list_for_each_entry_safe(curr, next, &q->task_list, task_list) {
-		unsigned flags = curr->flags;
-
-		if (curr->func(curr, mode, wake_flags, key) &&
-				(flags & WQ_FLAG_EXCLUSIVE) && !--nr_exclusive)
-			break;
-	}
-}
-
-static void __wake_up(wait_queue_head_t *q, unsigned int mode,
-		      int nr_exclusive, void *key)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&q->lock, flags);
-	__wake_up_common(q, mode, nr_exclusive, 0, key);
-	spin_unlock_irqrestore(&q->lock, flags);
-}
-
-void wake_up(wait_queue_head_t *q)
-{
-	__wake_up(q, TASK_NORMAL, 1, NULL);
-}
-
-void wake_up_all(wait_queue_head_t *q)
-{
-	__wake_up(q, TASK_NORMAL, 0, NULL);
-}
-
-static void __wake_up_locked(wait_queue_head_t *q, unsigned int mode, int nr)
-{
-	__wake_up_common(q, mode, nr, 0, NULL);
-}
-
-void
-prepare_to_wait(wait_queue_head_t *q, wait_queue_t *wait, int state)
-{
-	unsigned long flags;
-
-	wait->flags &= ~WQ_FLAG_EXCLUSIVE;
-	spin_lock_irqsave(&q->lock, flags);
-	if (list_empty(&wait->task_list))
-		__add_wait_queue(q, wait);
-	set_current_state(state);
-	spin_unlock_irqrestore(&q->lock, flags);
-}
-
-static void
-prepare_to_wait_exclusive(wait_queue_head_t *q, wait_queue_t *wait, int state)
-{
-	unsigned long flags;
-
-	wait->flags |= WQ_FLAG_EXCLUSIVE;
-	spin_lock_irqsave(&q->lock, flags);
-	if (list_empty(&wait->task_list))
-		__add_wait_queue_tail(q, wait);
-	set_current_state(state);
-	spin_unlock_irqrestore(&q->lock, flags);
-}
-
-void finish_wait(wait_queue_head_t *q, wait_queue_t *wait)
-{
-	unsigned long flags;
-
-	__set_current_state(TASK_RUNNING);
-	/*
-	 * We can check for list emptiness outside the lock
-	 * IFF:
-	 *  - we use the "careful" check that verifies both
-	 *    the next and prev pointers, so that there cannot
-	 *    be any half-pending updates in progress on other
-	 *    CPU's that we haven't seen yet (and that might
-	 *    still change the stack area.
-	 * and
-	 *  - all other users take the lock (ie we can only
-	 *    have _one_ other CPU that looks at or modifies
-	 *    the list).
-	 */
-	if (!list_empty_careful(&wait->task_list)) {
-		spin_lock_irqsave(&q->lock, flags);
-		list_del_init(&wait->task_list);
-		spin_unlock_irqrestore(&q->lock, flags);
-	}
-}
-
-int default_wake_function(wait_queue_t *curr, unsigned mode, int wake_flags,
-			  void *key)
-{
-	return wake_up_process(curr->private);
-}
-
-int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key)
-{
-	int ret = default_wake_function(wait, mode, sync, key);
-
-	if (ret)
-		list_del_init(&wait->task_list);
-	return ret;
-}
-
-struct wait_bit_key {
-	void			*flags;
-	int			bit_nr;
-	unsigned long		timeout;
-};
-
-struct wait_bit_queue {
-	struct wait_bit_key	key;
-	wait_queue_t		wait;
-};
-
-static int wake_bit_function(wait_queue_t *wait, unsigned mode, int sync, void *arg)
-{
-	struct wait_bit_key *key = arg;
-	struct wait_bit_queue *wait_bit =
-		container_of(wait, struct wait_bit_queue, wait);
-
-	return (wait_bit->key.flags == key->flags &&
-		wait_bit->key.bit_nr == key->bit_nr &&
-		!test_bit(key->bit_nr, key->flags))
-		? autoremove_wake_function(wait, mode, sync, key) : 0;
-}
-
-static DECLARE_WAIT_QUEUE_HEAD(bit_wq);
-
-#define __WAIT_BIT_KEY_INITIALIZER(word, bit)				\
-	{ .flags = word, .bit_nr = bit, }
-
-#define DEFINE_WAIT_BIT(name, word, bit)				\
-	struct wait_bit_queue name = {					\
-		.key = __WAIT_BIT_KEY_INITIALIZER(word, bit),		\
-		.wait	= {						\
-			.private	= current,			\
-			.func		= wake_bit_function,		\
-			.task_list	=				\
-				LIST_HEAD_INIT((name).wait.task_list),	\
-		},							\
-	}
-
-void wake_up_bit(void *word, int bit)
-{
-	struct wait_bit_key key = __WAIT_BIT_KEY_INITIALIZER(word, bit);
-
-	if (waitqueue_active(&bit_wq))
-		__wake_up(&bit_wq, TASK_NORMAL, 1, &key);
-}
-
-void __wait_on_bit(void *word, int bit, unsigned mode)
-{
-	DEFINE_WAIT_BIT(wait, word, bit);
-
-	do {
-		prepare_to_wait(&bit_wq, &wait.wait, mode);
-		if (test_bit(wait.key.bit_nr, wait.key.flags))
-			schedule();
-	} while (test_bit(wait.key.bit_nr, wait.key.flags));
-
-	finish_wait(&bit_wq, &wait.wait);
-}
-
-void __wait_on_bit_lock(void *word, int bit, unsigned mode)
-{
-	DEFINE_WAIT_BIT(wait, word, bit);
-
-	do {
-		prepare_to_wait_exclusive(&bit_wq, &wait.wait, mode);
-		if (!test_bit(wait.key.bit_nr, wait.key.flags))
-			continue;
-		schedule();
-	} while (test_and_set_bit(wait.key.bit_nr, wait.key.flags));
-	finish_wait(&bit_wq, &wait.wait);
-}
-
-void complete(struct completion *x)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&x->wait.lock, flags);
-	x->done++;
-	__wake_up_locked(&x->wait, TASK_NORMAL, 1);
-	spin_unlock_irqrestore(&x->wait.lock, flags);
-}
-
-void wait_for_completion(struct completion *x)
-{
-	spin_lock_irq(&x->wait.lock);
-
-	if (!x->done) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		__add_wait_queue_tail_exclusive(&x->wait, &wait);
-		do {
-			__set_current_state(TASK_UNINTERRUPTIBLE);
-			spin_unlock_irq(&x->wait.lock);
-
-			schedule();
-			spin_lock_irq(&x->wait.lock);
-		} while (!x->done);
-		__remove_wait_queue(&x->wait, &wait);
-		if (!x->done)
-			goto out;
-	}
-	x->done--;
-out:
-	spin_unlock_irq(&x->wait.lock);
-}