linux-ext4 - [PATCH v10 rebased on v6.4 10/25] dept: Apply sdt_might_sleep

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Date:   Mon,  3 Jul 2023 18:47:37 +0900
From:   Byungchul Park <byungchul@...com>
To:     linux-kernel@...r.kernel.org
Cc:     kernel_team@...ynix.com, torvalds@...ux-foundation.org,
        damien.lemoal@...nsource.wdc.com, linux-ide@...r.kernel.org,
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Subject: [PATCH v10 rebased on v6.4 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 <byungchul@...com>
---
 include/linux/wait.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index a0307b516b09..ff349e609da7 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 @@ 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);\
@@ -318,6 +320,7 @@ extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags);
 		cmd;								\
 	}									\
 	finish_wait(&wq_head, &__wq_entry);					\
+	sdt_might_sleep_end();							\
 __out:	__ret;									\
 })
 
-- 
2.17.1