linux-ext4 - [PATCH v9 10/25] dept: Apply sdt_might_sleep

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Message-Id: <1675154394-25598-11-git-send-email-max.byungchul.park@gmail.com>
Date:   Tue, 31 Jan 2023 17:39:39 +0900
From:   Byungchul Park <max.byungchul.park@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, damien.lemoal@...nsource.wdc.com,
        linux-ide@...r.kernel.org, adilger.kernel@...ger.ca,
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Subject: [PATCH v9 10/25] dept: Apply sdt_might_sleep_{start,end}() to waitqueue wait

Makes Dept able to track dependencies by waitqueue waits.

Signed-off-by: Byungchul Park <max.byungchul.park@...il.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..ff349e6 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_start(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_end();							\
 __out:	__ret;									\
 })
 
-- 
1.9.1