linux-kernel - Re: [PATCH 1/3] Documentation: Add some hardware hints for real-time

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Message-ID: <20251120120144.1725ef3e@gandalf.local.home>
Date: Thu, 20 Nov 2025 12:01:44 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-rt-devel@...ts.linux.dev, Clark Williams <clrkwllms@...nel.org>, John
 Ogness <john.ogness@...utronix.de>, Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH 1/3] Documentation: Add some hardware hints for
 real-time

On Thu, 20 Nov 2025 12:37:06 +0100
Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote:

> Some thoughts on hardware that is used for real-time workload. Certainly
> not complete but should cover some of the import topics such as:
> 
> - Main memory, caches and the possiblie control given by the hardware.
> - What could happen by putting critical hardware behind USB or VirtIO.
> - Allowing real-time tasks to consume the CPU entirely without giving
>   the system some time to breath.
> - Networking with what the kernel provides.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> ---
>  Documentation/core-api/real-time/hardware.rst | 132 ++++++++++++++++++
>  Documentation/core-api/real-time/index.rst    |   1 +
>  2 files changed, 133 insertions(+)
>  create mode 100644 Documentation/core-api/real-time/hardware.rst

Very nice write up!

Reviewed-by: Steven Rostedt (Google) <rostedt@...dmis.org>

-- Steve