linux-kernel - Re: [PATCH v5 2/2] sched/deadline: Update GRUB description in the documentation

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Message-ID: <20230530161246.4328421d@nowhere>
Date:   Tue, 30 May 2023 16:12:46 +0200
From:   luca abeni <luca.abeni@...tannapisa.it>
To:     Vineeth Pillai <vineeth@...byteword.org>
Cc:     Juri Lelli <juri.lelli@...hat.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        youssefesmat@...gle.com,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Valentin Schneider <vschneid@...hat.com>,
        Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH v5 2/2] sched/deadline: Update GRUB description in the
 documentation

I think this patch is also OK


			Thanks,
				Luca

On Tue, 30 May 2023 09:55:26 -0400
Vineeth Pillai <vineeth@...byteword.org> wrote:

> Update the details of GRUB to reflect the updated logic.
> 
> Signed-off-by: Vineeth Pillai (Google) <vineeth@...byteword.org>
> ---
>  Documentation/scheduler/sched-deadline.rst | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/scheduler/sched-deadline.rst
> b/Documentation/scheduler/sched-deadline.rst index
> 9d9be52f221a..9fe4846079bb 100644 ---
> a/Documentation/scheduler/sched-deadline.rst +++
> b/Documentation/scheduler/sched-deadline.rst @@ -203,12 +203,15 @@
> Deadline Task Scheduling
>    - Total bandwidth (this_bw): this is the sum of all tasks
> "belonging" to the runqueue, including the tasks in Inactive state.
>  
> +  - Maximum usable bandwidth (max_bw): This is the maximum bandwidth
> usable by
> +    deadline tasks and is currently set to the RT capacity.
> +
>  
>   The algorithm reclaims the bandwidth of the tasks in Inactive state.
>   It does so by decrementing the runtime of the executing task Ti at
> a pace equal to
>  
> -           dq = -max{ Ui / Umax, (1 - Uinact - Uextra) } dt
> +           dq = -(max{ Ui, (Umax - Uinact - Uextra) } / Umax) dt
>  
>   where:
>