linux-kernel - Re: [PATCH v9 4/7] cgroup/cpuset: Add a new isolated cpus.partition type

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 12 Jan 2022 11:23:39 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Jonathan Corbet <corbet@....net>,
        Shuah Khan <shuah@...nel.org>, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Roman Gushchin <guro@...com>, Phil Auld <pauld@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Michal Koutný <mkoutny@...e.com>
Subject: Re: [PATCH v9 4/7] cgroup/cpuset: Add a new isolated cpus.partition
 type

On Wed, Jan 12, 2022 at 10:40:01AM -0500, Waiman Long wrote:
> Yes, that is a possible workaround. However, it makes cgroup management much
> harder especially in the cgroup v2 environment where multiple controllers
> are likely to be enabled in the same cgroup.

In most cases, cgroup2 shouldn't be a problem here given that controllers
can be enabled selectively and this 1-cpu cgroups will most likely be
leaves. But yeah, not super convenient.

Thanks.

-- 
tejun