linux-kernel - Re: [PATCH v2] sched/Documentation: Add RT_RUNTIME

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Date: Fri, 19 Apr 2024 18:56:15 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Zhang Qiao <zhangqiao22@...wei.com>, mingo@...nel.org, chrubis@...e.cz,
	rostedt@...dmis.org, corbet@....net
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] sched/Documentation: Add RT_RUNTIME_SHARE
 documentation

On Fri, Apr 19, 2024 at 05:04:32PM +0800, Zhang Qiao wrote:
> +2.4 RT_RUNTIME_SHARE sched feature
> +----------------------------------
> +
> +RT_RUNTIME_SHARE allows a cpu to borrow rt-runtime from other cpus if it runs
> +out of its own rt-runtime.
> +
> +With this feature enabled, a rt-task may hit 100% cpu usage and can stall other
> +per-cpu tasks like kworkers, as a result, which leads into system hang.
> +
> +Thus, it is advised to disable this feature by default to avoid aforementioned
> +issue unless you know what you're doing.
>  
>  3. Future plans
>  ===============

LGTM, thanks!

Reviewed-by: Bagas Sanjaya <bagasdotme@...il.com>

-- 
An old man doll... just what I always wanted! - Clara

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