From: Peter Zijlstra <peterz@infradead.org>
Date: Wed, 2 Oct 2013 09:22:26 +0000 (+0200)
Subject: sched/wait: Collapse __wait_event_interruptible_exclusive()
X-Git-Tag: next-20131017~32^2~14^2~76
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=48c2521717b39cb6904941ec2847d9775669207a;p=karo-tx-linux.git

sched/wait: Collapse __wait_event_interruptible_exclusive()

Reduce macro complexity by using the new ___wait_event() helper.
No change in behaviour, identical generated code.

Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20131002092528.541716442@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/include/linux/wait.h b/include/linux/wait.h
index a79fb15c1dd4..c4ab172daac0 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -421,26 +421,8 @@ do {									\
 })
 
 #define __wait_event_interruptible_exclusive(wq, condition, ret)	\
-do {									\
-	__label__ __out;						\
-	DEFINE_WAIT(__wait);						\
-									\
-	for (;;) {							\
-		prepare_to_wait_exclusive(&wq, &__wait,			\
-					TASK_INTERRUPTIBLE);		\
-		if (condition)						\
-			break;						\
-		if (signal_pending(current)) {				\
-			ret = -ERESTARTSYS;				\
-			abort_exclusive_wait(&wq, &__wait, 		\
-				TASK_INTERRUPTIBLE, NULL);		\
-			goto __out;					\
-		}							\
-		schedule();						\
-	}								\
-	finish_wait(&wq, &__wait);					\
-__out:	;								\
-} while (0)
+	___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, ret,	\
+		      schedule())
 
 #define wait_event_interruptible_exclusive(wq, condition)		\
 ({									\