Allows exclusive waits with a custom @state.
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
v2: switched to wait_event_state_exclusive()
include/linux/wait.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 327894f022cf..9ebb0d2e422a 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -968,6 +968,18 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
state, 0, timeout, \
__ret = schedule_timeout(__ret))
+#define __wait_event_state_exclusive(wq, condition, state) \
+ ___wait_event(wq, condition, state, 1, 0, schedule())
+
+#define wait_event_state_exclusive(wq, condition, state) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_state_exclusive(wq, condition, state); \
+ __ret; \
+})
+
#define __wait_event_killable_timeout(wq_head, condition, timeout) \
___wait_event(wq_head, ___wait_cond_timeout(condition), \
TASK_KILLABLE, 0, timeout, \
--
2.50.0.rc1.591.g9c95f17f64-goog
