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>

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 68e3a628e1578440928cde498dd357ec7b0447d5..546b94efc82e8525269316f29cbbeb940ed2e955 100644 (file)
--- 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