linux-kernel - [PATCH v9 09/25] dept: Apply sdt_might_sleep

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Message-Id: <1675154394-25598-10-git-send-email-max.byungchul.park@gmail.com>
Date:   Tue, 31 Jan 2023 17:39:38 +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,
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Subject: [PATCH v9 09/25] dept: Apply sdt_might_sleep_{start,end}() to swait

Makes Dept able to track dependencies by swaits.

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

diff --git a/include/linux/swait.h b/include/linux/swait.h
index 6a8c22b..0284821 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 @@ static inline bool swq_has_sleeper(struct swait_queue_head *wq)
 	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 @@ static inline bool swq_has_sleeper(struct swait_queue_head *wq)
 		cmd;							\
 	}								\
 	finish_swait(&wq, &__wait);					\
+	sdt_might_sleep_end();						\
 __out:	__ret;								\
 })
 
-- 
1.9.1