diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2024-05-23 12:26:06 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-08-17 11:06:44 +0200 |
| commit | 54a58a78779169f9c92a51facf6de7ce94962328 (patch) | |
| tree | 55d5622d6c8b753a0f17c927ed8ae12f006b38e5 /kernel/sched/features.h | |
| parent | 152e11f6df293e816a6a37c69757033cdc72667d (diff) | |
sched/fair: Implement DELAY_ZERO
'Extend' DELAY_DEQUEUE by noting that since we wanted to dequeued them
at the 0-lag point, truncate lag (eg. don't let them earn positive
lag).
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Tested-by: Valentin Schneider <vschneid@redhat.com>
Link: https://lkml.kernel.org/r/20240727105030.403750550@infradead.org
Diffstat (limited to 'kernel/sched/features.h')
| -rw-r--r-- | kernel/sched/features.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 1feaa7bbc278..7fdeb5576188 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -34,8 +34,11 @@ SCHED_FEAT(CACHE_HOT_BUDDY, true) * By delaying the dequeue for non-eligible tasks, they remain in the * competition and can burn off their negative lag. When they get selected * they'll have positive lag by definition. + * + * DELAY_ZERO clips the lag on dequeue (or wakeup) to 0. */ SCHED_FEAT(DELAY_DEQUEUE, true) +SCHED_FEAT(DELAY_ZERO, true) /* * Allow wakeup-time preemption of the current task: |