diff mbox series

[RFC,v7,09/23] dept: Apply sdt_might_sleep_weak() to swait

Message ID 1673235231-30302-10-git-send-email-byungchul.park@lge.com (mailing list archive)
State New
Headers show
Series DEPT(Dependency Tracker) | expand

Commit Message

Byungchul Park Jan. 9, 2023, 3:33 a.m. UTC 
Makes Dept able to track dependencies by swaits, but weakly.

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

diff --git a/include/linux/swait.h b/include/linux/swait.h
index 6a8c22b..1304209 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_weak(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_finish();					\
 __out:	__ret;								\
 })