Add wait_var_event_interruptible() to allow interruptible waits for events.
Signed-off-by: David Howells <dhowe...@redhat.com>
cc: Peter Zijlstra <pet...@infradead.org>
---
include/linux/wait_bit.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/linux/wait_bit.h b/include/linux/wait_bit.h
index 2b0072fa5e92..7dec36aecbd9 100644
--- a/include/linux/wait_bit.h
+++ b/include/linux/wait_bit.h
@@ -305,6 +305,19 @@ do {
\
__ret; \
})
+#define __wait_var_event_interruptible(var, condition) \
+ ___wait_var_event(var, condition, TASK_INTERRUPTIBLE, 0, 0, \
+ schedule())
+
+#define wait_var_event_interruptible(var, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_var_event_interruptible(var, condition); \
+ __ret; \
+})
+
/**
* clear_and_wake_up_bit - clear a bit and wake up anyone waiting on that bit
*
