[PATCH RFC v7 20/23] dept: Apply timeout consideration to waitqueue wait

Byungchul Park
2023-01-09T04:06:04Z

Now that CONFIG_DEPT_AGGRESSIVE_TIMEOUT_WAIT was introduced, apply the
consideration to waitqueue wait, assuming an input 'ret' in
___wait_event() macro is used as a timeout value.

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
---
include/linux/wait.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index ede466c..87888ee 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -304,7 +304,10 @@ 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_weak(NULL); \
+ if (!__ret || __ret == MAX_SCHEDULE_TIMEOUT) \
+ sdt_might_sleep_weak(NULL); \
+ else \
+ sdt_might_sleep_weak_timeout(NULL); \
init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0); \
for (;;) { \
long __int = prepare_to_wait_event(&wq_head, &__wq_entry, state);\
--
1.9.1