[PATCH v10 10/25] dept: Apply sdt_might_sleep_{start,end}() to waitqueue wait

Byungchul Park
2023-06-26T12:48:02Z

Makes Dept able to track dependencies by waitqueue waits.

Signed-off-by: Byungchul Park <byungchul@sk.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