linux-kernel - Re: [PATCH 1/2] cgroup, docs: Be explicit about independence of RT_GROUP

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Message-ID: <Z8ibndhPN10cL9Gs@slm.duckdns.org>
Date: Wed, 5 Mar 2025 08:44:45 -1000
From: Tejun Heo <tj@...nel.org>
To: shashank.mahadasyam@...y.com
Cc: Johannes Weiner <hannes@...xchg.org>,
	Michal Koutný <mkoutny@...e.com>,
	Jonathan Corbet <corbet@....net>, Waiman Long <longman@...hat.com>,
	cgroups@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Shinya Takumi <shinya.takumi@...y.com>
Subject: Re: [PATCH 1/2] cgroup, docs: Be explicit about independence of
 RT_GROUP_SCHED and non-cpu controllers

On Wed, Mar 05, 2025 at 01:12:43PM +0900, Shashank Balaji via B4 Relay wrote:
> From: Shashank Balaji <shashank.mahadasyam@...y.com>
> 
> The cgroup v2 cpu controller has a limitation that if
> CONFIG_RT_GROUP_SCHED is enabled, the cpu controller can be enabled only
> if all the realtime processes are in the root cgroup. The other
> controllers have no such restriction. They can be used for the resource
> control of realtime processes irrespective of whether
> CONFIG_RT_GROUP_SCHED is enabled or not.
> 
> Signed-off-by: Shashank Balaji <shashank.mahadasyam@...y.com>

Applied to cgroup/for-6.15.

Thanks.

-- 
tejun