lkml.org 
[lkml]   [2013]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:sched/core] sched/wait: Collapse __wait_event_timeout()
Commit-ID:  ddc1994b8217527e1818f690f17597fc9cedf81b
Gitweb: http://git.kernel.org/tip/ddc1994b8217527e1818f690f17597fc9cedf81b
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Wed, 2 Oct 2013 11:22:23 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 4 Oct 2013 10:14:47 +0200

sched/wait: Collapse __wait_event_timeout()

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/20131002092528.325264677@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
include/linux/wait.h | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 68e3a62..546b94e 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -247,17 +247,9 @@ do { \
} while (0)

#define __wait_event_timeout(wq, condition, ret) \
-do { \
- DEFINE_WAIT(__wait); \
- \
- for (;;) { \
- prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); \
- if (___wait_cond_timeout(condition, ret)) \
- break; \
- ret = schedule_timeout(ret); \
- } \
- finish_wait(&wq, &__wait); \
-} while (0)
+ ___wait_event(wq, ___wait_cond_timeout(condition, ret), \
+ TASK_UNINTERRUPTIBLE, 0, ret, \
+ ret = schedule_timeout(ret))

/**
* wait_event_timeout - sleep until a condition gets true or a timeout elapses

\
 
 \ /
  Last update: 2013-10-04 20:21    [W:0.120 / U:11.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site