[RFC: 2.6 patch] kernel/sched.c: remove two unused functions

[Adrian Bunk <bunk@stusta.de>]

This patch removes the unused functions wait_for_completion_timeout and 
wait_for_completion_interruptible_timeout.

Is any usage for them planned or is this patch OK?

Signed-off-by: Adrian Bunk <bunk@stusta.de>

---

 include/linux/completion.h |    4 --
 kernel/sched.c             |   66 -------------------------------------
 2 files changed, 70 deletions(-)

--- linux-2.6.12-rc3-mm2-full/include/linux/completion.h.old	2005-05-03 07:52:14.000000000 +0200
+++ linux-2.6.12-rc3-mm2-full/include/linux/completion.h	2005-05-03 07:52:32.000000000 +0200
@@ -29,10 +29,6 @@
 
 extern void FASTCALL(wait_for_completion(struct completion *));
 extern int FASTCALL(wait_for_completion_interruptible(struct completion *x));
-extern unsigned long FASTCALL(wait_for_completion_timeout(struct completion *x,
-						   unsigned long timeout));
-extern unsigned long FASTCALL(wait_for_completion_interruptible_timeout(
-			struct completion *x, unsigned long timeout));
 
 extern void FASTCALL(complete(struct completion *));
 extern void FASTCALL(complete_all(struct completion *));
--- linux-2.6.12-rc3-mm2-full/kernel/sched.c.old	2005-05-03 07:52:42.000000000 +0200
+++ linux-2.6.12-rc3-mm2-full/kernel/sched.c	2005-05-03 07:53:03.000000000 +0200
@@ -3146,36 +3146,6 @@
 }
 EXPORT_SYMBOL(wait_for_completion);
 
-unsigned long fastcall __sched
-wait_for_completion_timeout(struct completion *x, unsigned long timeout)
-{
-	might_sleep();
-
-	spin_lock_irq(&x->wait.lock);
-	if (!x->done) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		wait.flags |= WQ_FLAG_EXCLUSIVE;
-		__add_wait_queue_tail(&x->wait, &wait);
-		do {
-			__set_current_state(TASK_UNINTERRUPTIBLE);
-			spin_unlock_irq(&x->wait.lock);
-			timeout = schedule_timeout(timeout);
-			spin_lock_irq(&x->wait.lock);
-			if (!timeout) {
-				__remove_wait_queue(&x->wait, &wait);
-				goto out;
-			}
-		} while (!x->done);
-		__remove_wait_queue(&x->wait, &wait);
-	}
-	x->done--;
-out:
-	spin_unlock_irq(&x->wait.lock);
-	return timeout;
-}
-EXPORT_SYMBOL(wait_for_completion_timeout);
-
 int fastcall __sched wait_for_completion_interruptible(struct completion *x)
 {
 	int ret = 0;
@@ -3209,42 +3179,6 @@
 }
 EXPORT_SYMBOL(wait_for_completion_interruptible);
 
-unsigned long fastcall __sched
-wait_for_completion_interruptible_timeout(struct completion *x,
-					  unsigned long timeout)
-{
-	might_sleep();
-
-	spin_lock_irq(&x->wait.lock);
-	if (!x->done) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		wait.flags |= WQ_FLAG_EXCLUSIVE;
-		__add_wait_queue_tail(&x->wait, &wait);
-		do {
-			if (signal_pending(current)) {
-				timeout = -ERESTARTSYS;
-				__remove_wait_queue(&x->wait, &wait);
-				goto out;
-			}
-			__set_current_state(TASK_INTERRUPTIBLE);
-			spin_unlock_irq(&x->wait.lock);
-			timeout = schedule_timeout(timeout);
-			spin_lock_irq(&x->wait.lock);
-			if (!timeout) {
-				__remove_wait_queue(&x->wait, &wait);
-				goto out;
-			}
-		} while (!x->done);
-		__remove_wait_queue(&x->wait, &wait);
-	}
-	x->done--;
-out:
-	spin_unlock_irq(&x->wait.lock);
-	return timeout;
-}
-EXPORT_SYMBOL(wait_for_completion_interruptible_timeout);
-
 
 #define	SLEEP_ON_VAR					\
 	unsigned long flags;				\