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Subject[tip:sched/core] sched/wait: Collapse __wait_event_interruptible( )
Commit-ID:  f13f4c41c9cf9cd61c896e46e4e7ba2687e2af9c
Gitweb: http://git.kernel.org/tip/f13f4c41c9cf9cd61c896e46e4e7ba2687e2af9c
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Wed, 2 Oct 2013 11:22:24 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 4 Oct 2013 10:14:48 +0200

sched/wait: Collapse __wait_event_interruptible()

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/20131002092528.396949919@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
include/linux/wait.h | 17 ++---------------
1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 546b94e..39e4bbd 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -277,21 +277,8 @@ do { \
})

#define __wait_event_interruptible(wq, condition, ret) \
-do { \
- DEFINE_WAIT(__wait); \
- \
- for (;;) { \
- prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \
- if (condition) \
- break; \
- if (signal_pending(current)) { \
- ret = -ERESTARTSYS; \
- break; \
- } \
- schedule(); \
- } \
- finish_wait(&wq, &__wait); \
-} while (0)
+ ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, ret, \
+ schedule())

/**
* wait_event_interruptible - sleep until a condition gets true

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