From: Xuewen Yan <[email protected]>
The UTIL_AVG_UNCHANGED flag had been cleared when the task util changed.
And the enqueued is equal to task_util with the flag, so it is better
to add the UTIL_AVG_UNCHANGED flag for last_enqueued_diff.
Fixes: b89997aa88f0b sched/pelt: Fix task util_est update filtering
Signed-off-by: Xuewen Yan <[email protected]>
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index e5e457fa9dc8..94d77b4fa601 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3996,7 +3996,7 @@ static inline void util_est_update(struct cfs_rq *cfs_rq,
if (ue.enqueued & UTIL_AVG_UNCHANGED)
return;
- last_enqueued_diff = ue.enqueued;
+ last_enqueued_diff = (ue.enqueued | UTIL_AVG_UNCHANGED);
/*
* Reset EWMA on utilization increases, the moving average is used only
--
2.29.0