linux-kernel - [tip:sched/core] sched/wait: Collapse __wait_event

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Date:	Fri, 4 Oct 2013 10:35:37 -0700
From:	tip-bot for Peter Zijlstra <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, oleg@...hat.com, tglx@...utronix.de
Subject: [tip:sched/core] sched/wait: Collapse __wait_event_killable()

Commit-ID:  cf7361fd961b6f0510572af6cf8ca3ffba07018b
Gitweb:     http://git.kernel.org/tip/cf7361fd961b6f0510572af6cf8ca3ffba07018b
Author:     Peter Zijlstra <peterz@...radead.org>
AuthorDate: Wed, 2 Oct 2013 11:22:31 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 4 Oct 2013 10:16:21 +0200

sched/wait: Collapse __wait_event_killable()

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

Reviewed-by: Oleg Nesterov <oleg@...hat.com>
Signed-off-by: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20131002092528.898691966@infradead.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/wait.h | 17 +----------------
 1 file changed, 1 insertion(+), 16 deletions(-)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 5d5408b..ec3683e 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -582,22 +582,7 @@ do {									\
 
 
 #define __wait_event_killable(wq, condition, ret)			\
-do {									\
-	DEFINE_WAIT(__wait);						\
-									\
-	for (;;) {							\
-		prepare_to_wait(&wq, &__wait, TASK_KILLABLE);		\
-		if (condition)						\
-			break;						\
-		if (!fatal_signal_pending(current)) {			\
-			schedule();					\
-			continue;					\
-		}							\
-		ret = -ERESTARTSYS;					\
-		break;							\
-	}								\
-	finish_wait(&wq, &__wait);					\
-} while (0)
+	___wait_event(wq, condition, TASK_KILLABLE, 0, ret, schedule())
 
 /**
  * wait_event_killable - sleep until a condition gets true
--
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