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Message-Id: <20240727105028.287790895@infradead.org>
Date: Sat, 27 Jul 2024 12:27:33 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: mingo@...hat.com,
peterz@...radead.org,
juri.lelli@...hat.com,
vincent.guittot@...aro.org,
dietmar.eggemann@....com,
rostedt@...dmis.org,
bsegall@...gle.com,
mgorman@...e.de,
vschneid@...hat.com,
linux-kernel@...r.kernel.org
Cc: kprateek.nayak@....com,
wuyun.abel@...edance.com,
youssefesmat@...omium.org,
tglx@...utronix.de,
efault@....de
Subject: [PATCH 01/24] sched/eevdf: Add feature comments
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
kernel/sched/features.h | 7 +++++++
1 file changed, 7 insertions(+)
--- a/kernel/sched/features.h
+++ b/kernel/sched/features.h
@@ -5,7 +5,14 @@
* sleep+wake cycles. EEVDF placement strategy #1, #2 if disabled.
*/
SCHED_FEAT(PLACE_LAG, true)
+/*
+ * Give new tasks half a slice to ease into the competition.
+ */
SCHED_FEAT(PLACE_DEADLINE_INITIAL, true)
+/*
+ * Inhibit (wakeup) preemption until the current task has either matched the
+ * 0-lag point or until is has exhausted it's slice.
+ */
SCHED_FEAT(RUN_TO_PARITY, true)
/*
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