linux-kernel - Re: [PATCH 4/5] sched/deadline: Cleanup on_dl

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Message-ID: <d95ffb59-ad54-f775-7a9d-0806051539e0@arm.com>
Date:   Fri, 26 Jul 2019 10:32:49 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Juri Lelli <juri.lelli@...hat.com>
Cc:     Dietmar Eggemann <dietmar.eggemann@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Luca Abeni <luca.abeni@...tannapisa.it>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Qais Yousef <Qais.Yousef@....com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] sched/deadline: Cleanup on_dl_rq() handling

On 26/07/2019 10:20, Juri Lelli wrote:
>> Any idea why a similar error leads to a BUG_ON() in the enqueue path but
>> only a silent return on the dequeue path? I would expect the handling to be
>> almost identical.
>>  
> 
> Task could have already been dequeued by update_curr_dl()->throttle
> called by dequeue_task_dl() before calling __dequeue_task_dl().
> 

Got it, thanks.

> Thanks,
> 
> Juri
>