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From:   Byungchul Park <byungchul.park@lge.com>
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Subject: [PATCH RFC v7 10/23] dept: Apply sdt_might_sleep_weak() to waitqueue wait
Date:   Mon,  9 Jan 2023 12:33:38 +0900
Message-Id: <1673235231-30302-11-git-send-email-byungchul.park@lge.com>
In-Reply-To: <1673235231-30302-1-git-send-email-byungchul.park@lge.com>
References: <1673235231-30302-1-git-send-email-byungchul.park@lge.com>
Precedence: bulk

Makes Dept able to track dependencies by waitqueue waits, but weakly.

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

diff --git a/include/linux/wait.h b/include/linux/wait.h
index a0307b5..ede466c 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>
 #include <uapi/linux/wait.h>
@@ -303,6 +304,7 @@ static inline void wake_up_pollfree(struct wait_queue_head *wq_head)
 	struct wait_queue_entry __wq_entry;					\
 	long __ret = ret;	/* explicit shadow */				\
 										\
+	sdt_might_sleep_weak(NULL);						\
 	init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0);	\
 	for (;;) {								\
 		long __int = prepare_to_wait_event(&wq_head, &__wq_entry, state);\
@@ -318,6 +320,7 @@ static inline void wake_up_pollfree(struct wait_queue_head *wq_head)
 		cmd;								\
 	}									\
 	finish_wait(&wq_head, &__wq_entry);					\
+	sdt_might_sleep_finish();						\
 __out:	__ret;									\
 })
 
-- 
1.9.1