Re: [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective

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To: Waiman Long <longman@xxxxxxxxxx>
Subject: Re: [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Sun, 12 Jun 2022 07:40:25 -1000
Cc: Zefan Li <lizefan.x@xxxxxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, cgroups@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Roman Gushchin <guro@xxxxxx>, Phil Auld <pauld@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Frederic Weisbecker <frederic@xxxxxxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Michal Koutný <mkoutny@xxxxxxxx>
In-reply-to: <20220510153413.400020-4-longman@redhat.com>
References: <20220510153413.400020-1-longman@redhat.com> <20220510153413.400020-4-longman@redhat.com>

Hello,

Sorry about the long delay.

On Tue, May 10, 2022 at 11:34:08AM -0400, Waiman Long wrote:
> Once a partition with empty "cpuset.cpus.effective" is formed, no
> new task can be moved into it until "cpuset.cpus.effective" becomes
> non-empty.

This is always true due to no-tasks-in-intermediate-cgroups requirement,
right?

Thanks.

-- 
tejun

Follow-Ups:
- Re: [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective
  - From: Waiman Long
- Re: [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective
  - From: Tejun Heo

References:
- [PATCH v11 0/8] cgroup/cpuset: cpu partition code enhancements
  - From: Waiman Long
- [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective
  - From: Waiman Long

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