linux-kernel - Re: [PATCH] sched/fair: fix pick_eevdf to always find the correct se

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Message-ID: <867f5121d7d010cacf938c293f862b0cea560ec2.camel@gmx.de>
Date:   Fri, 06 Oct 2023 12:31:28 +0200
From:   Mike Galbraith <efault@....de>
To:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Biju Das <biju.das.jz@...renesas.com>,
        Peter Zijlstra <peterz@...radead.org>
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        "bristot@...hat.com" <bristot@...hat.com>,
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        "corbet@....net" <corbet@....net>,
        "dietmar.eggemann@....com" <dietmar.eggemann@....com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
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        <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH] sched/fair: fix pick_eevdf to always find the correct se

On Fri, 2023-10-06 at 10:35 +0200, Marek Szyprowski wrote:
>
>
> Just to note, I've run into this issue on the QEmu's 'arm64/virt'
> platform, not on the Samsung specific hardware. 

It doesn't appear to be arch specific, all I have to do is enable
autogroup, raspberry or x86_64 desktop box, the occasional failure
tripping over task groups, leaving both best and best_left with
identical but not what we're looking for ->min_deadline.

	-Mike