linux-kernel - Re: SCHED_DEADLINE tasks missing their deadline with SCHED_FLAG

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Message-ID: <aFqhId-qMFNyPD1s@jlelli-thinkpadt14gen4.remote.csb>
Date: Tue, 24 Jun 2025 14:59:13 +0200
From: Juri Lelli <juri.lelli@...hat.com>
To: luca abeni <luca.abeni@...tannapisa.it>
Cc: Marcel Ziswiler <marcel.ziswiler@...ethink.co.uk>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Vineeth Pillai <vineeth@...byteword.org>
Subject: Re: SCHED_DEADLINE tasks missing their deadline with
 SCHED_FLAG_RECLAIM jobs in the mix (using GRUB)

Hello again,

On 24/06/25 09:49, Juri Lelli wrote:

...

> The following seem to at least cure the problem after boot. Things are
> still broken after cpusets creation. Moving to look into that, but
> wanted to share where I am so that we don't duplicate work.

I ended up with two additional patches that seem to make things a little
better at my end. You can find them at

https://github.com/jlelli/linux/tree/upstream/fix-grub

Marcel, Luca, can you please give them a quick try to check if they do
any good?

Thanks!
Juri