linux-kernel - Re: [PATCH v2 1/1] docs: scheduler: Start documenting the EEVDF scheduler

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Message-ID: <878qy1uvyw.fsf@trenco.lwn.net>
Date: Tue, 16 Jul 2024 10:45:27 -0600
From: Jonathan Corbet <corbet@....net>
To: Carlos Bilbao <carlos.bilbao.osdev@...il.com>, sergio.collado@...il.com,
 peterz@...radead.org, rdunlap@...radead.org
Cc: bilbao@...edu, jembid@....es, linux-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org, Carlos Bilbao <carlos.bilbao.osdev@...il.com>
Subject: Re: [PATCH v2 1/1] docs: scheduler: Start documenting the EEVDF
 scheduler

Carlos Bilbao <carlos.bilbao.osdev@...il.com> writes:

> Add some documentation regarding the newly introduced scheduler EEVDF.

A nit, but one I wish more people would make note of...

[...]

> --- a/Documentation/scheduler/sched-design-CFS.rst
> +++ b/Documentation/scheduler/sched-design-CFS.rst
> @@ -8,10 +8,12 @@ CFS Scheduler
>  1.  OVERVIEW
>  ============
>  
> -CFS stands for "Completely Fair Scheduler," and is the new "desktop" process
> -scheduler implemented by Ingo Molnar and merged in Linux 2.6.23.  It is the
> -replacement for the previous vanilla scheduler's SCHED_OTHER interactivity
> -code.
> +CFS stands for "Completely Fair Scheduler," and is the "desktop" process
> +scheduler implemented by Ingo Molnar and merged in Linux 2.6.23. When
> +originally merged, it was the replacement for the previous vanilla
> +scheduler's SCHED_OTHER interactivity code. Nowadays, CFS is making room
> +for EEVDF, for which documentation can be found in
> +:ref:`sched_design_EEVDF`.

If, here, you just say "can be found in
Documentation/scheduler/sched-eevdf.rst", the right cross-reference will
be created and ...

>  80% of CFS's design can be summed up in a single sentence: CFS basically models
>  an "ideal, precise multi-tasking CPU" on real hardware.
> diff --git a/Documentation/scheduler/sched-eevdf.rst b/Documentation/scheduler/sched-eevdf.rst
> new file mode 100644
> index 000000000000..019327da333a
> --- /dev/null
> +++ b/Documentation/scheduler/sched-eevdf.rst
> @@ -0,0 +1,44 @@
> +.. _sched_design_EEVDF:

...you can take out this unnecessary label.

Thanks,

jon