linux-kernel - Re: [RFC PATCH] sched/deadline: Avoid dl_server boosting with expired deadline

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Message-ID: <20251014193300.GA1206438@noisy.programming.kicks-ass.net>
Date: Tue, 14 Oct 2025 21:33:00 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Juri Lelli <juri.lelli@...hat.com>
Cc: Gabriele Monaco <gmonaco@...hat.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...hat.com>,
	Clark Williams <williams@...hat.com>
Subject: Re: [RFC PATCH] sched/deadline: Avoid dl_server boosting with
 expired deadline

On Tue, Oct 14, 2025 at 06:01:10PM +0200, Juri Lelli wrote:

> Shouldn't idle time be accounted (subtracted from runtime) as well, though?

Argh, indeed. Then I suppose we should look at bringing some of that
'idle-for-whole-period' logic to try and actually stop the timer at some
point if nothing happens.