Make dept able to track dependencies by waitqueue waits.

Signed-off-by: Byungchul Park <byungchul@sk.com>
---
 include/linux/wait.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 09855d819418..65dd50f25e54 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -7,6 +7,7 @@
 #include <linux/list.h>
 #include <linux/stddef.h>
 #include <linux/spinlock.h>
+#include <linux/dept_sdt.h>
 
 #include <asm/current.h>
 
@@ -305,6 +306,7 @@ extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags);
 	struct wait_queue_entry __wq_entry;					\
 	long __ret = ret;	/* explicit shadow */				\
 										\
+	sdt_might_sleep_start(NULL);						\
 	init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0);	\
 	for (;;) {								\
 		long __int = prepare_to_wait_event(&wq_head, &__wq_entry, state);\
@@ -323,6 +325,7 @@ extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags);
 			break;							\
 	}									\
 	finish_wait(&wq_head, &__wq_entry);					\
+	sdt_might_sleep_end();							\
 __out:	__ret;									\
 })
 
-- 
2.17.1