[PATCH 09/16] sched/wait: Collapse __wait_event_interruptible_exclusive()

From: Peter Zijlstra
Date: Wed Oct 02 2013 - 05:52:02 EST


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

Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
include/linux/tty.h | 21 +----
include/linux/wait.h | 192 +++++++++++++++------------------------------------
2 files changed, 63 insertions(+), 150 deletions(-)

--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -427,26 +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) \
({ \


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