If there are tasks that fail to freeze in the current suspend attempt,
we raise their freeze priority for the next attempt.
This change ensures that such tasks are frozen earlier in the next
round, helping to reduce retry counts and avoid persistent D-state
tasks due to dependency misordering.
Signed-off-by: Zihuan Zhang <zhangzihuan@xxxxxxxxxx>
---
kernel/power/process.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 21bbca7040cf..9d3cbde905b9 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -111,8 +111,10 @@ static int try_to_freeze_tasks(bool user_only)
if (!wakeup || pm_debug_messages_on) {
read_lock(&tasklist_lock);
for_each_process_thread(g, p) {
- if (p != current && freezing(p) && !frozen(p))
+ if (p != current && freezing(p) && !frozen(p)) {
+ freeze_set_default_priority(p, FREEZE_PRIORITY_HIGH);
sched_show_task(p);
+ }
}
read_unlock(&tasklist_lock);
}
--
2.25.1
