Make dept able to track dependencies by swaits.

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

diff --git a/include/linux/swait.h b/include/linux/swait.h
index d324419482a0..277ac74f61c3 100644
--- a/include/linux/swait.h
+++ b/include/linux/swait.h
@@ -6,6 +6,7 @@
 #include <linux/stddef.h>
 #include <linux/spinlock.h>
 #include <linux/wait.h>
+#include <linux/dept_sdt.h>
 #include <asm/current.h>
 
 /*
@@ -161,6 +162,7 @@ extern void finish_swait(struct swait_queue_head *q, struct swait_queue *wait);
 	struct swait_queue __wait;					\
 	long __ret = ret;						\
 									\
+	sdt_might_sleep_start(NULL);					\
 	INIT_LIST_HEAD(&__wait.task_list);				\
 	for (;;) {							\
 		long __int = prepare_to_swait_event(&wq, &__wait, state);\
@@ -176,6 +178,7 @@ extern void finish_swait(struct swait_queue_head *q, struct swait_queue *wait);
 		cmd;							\
 	}								\
 	finish_swait(&wq, &__wait);					\
+	sdt_might_sleep_end();						\
 __out:	__ret;								\
 })
 
-- 
2.17.1