Messages in this thread Patch in this message | | | Date | Wed, 14 Sep 2022 09:29:59 +0000 | From | Hao Lee <> | Subject | [PATCH] psi: fix possible missing or delayed pending event |
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When a pending event exists and growth is less than the threshold, the current logic is to skip this trigger without generating event. However, from e6df4ead85d9 ("psi: fix possible trigger missing in the window"), our purpose is to generate event as long as pending event exists and the rate meets the limit. This patch fixes the possible pending-event missing or delay.
Fixes: e6df4ead85d9 ("psi: fix possible trigger missing in the window") Signed-off-by: Hao Lee <haolee.swjtu@gmail.com> --- kernel/sched/psi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c index 9711827e3..0bae4ee2b 100644 --- a/kernel/sched/psi.c +++ b/kernel/sched/psi.c @@ -539,7 +539,7 @@ static u64 update_triggers(struct psi_group *group, u64 now) /* Calculate growth since last update */ growth = window_update(&t->win, now, total[t->state]); - if (growth < t->threshold) + if (growth < t->threshold && !t->pending_event) continue; t->pending_event = true; -- 2.21.0
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