From: "Michal Koutný" <mkoutny-IBi9RG/b67k@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Waiman Long <longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Zefan Li <lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>,
Shuah Khan <shuah-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>,
Phil Auld <pauld-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Juri Lelli <juri.lelli-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Frederic Weisbecker
<frederic-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Marcelo Tosatti
<mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH v11 7/8] cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst
Date: Tue, 14 Jun 2022 13:53:45 +0200 [thread overview]
Message-ID: <20220614115345.GA6771@blackbody.suse.cz> (raw)
In-Reply-To: <Yqd7WMFj6AEyV3Cy-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 668 bytes --]
On Mon, Jun 13, 2022 at 08:00:56AM -1000, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> Yeah, I don't know why this part is different from any other errors that the
> parent can make.
It's different because a write to parent's cpuset.cpus is independent of
whether cpuset.cpus of its children are exclusive or not.
In an extreme case the children may be non-exclusive
parent cpuset.cpus=0-3 // valid partition
`- child_1 cpuset.cpus=0-1 // invalid partition
`- child_2 cpuset.cpus=1-2 // invalid partition
but the parent can still be a valid partition (thanks to cpu no. 3 in
the example above).
Do I miss anything?
Thanks,
Michal
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 228 bytes --]
next prev parent reply other threads:[~2022-06-14 11:53 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 15:34 [PATCH v11 0/8] cgroup/cpuset: cpu partition code enhancements Waiman Long
2022-05-10 15:34 ` [PATCH v11 2/8] cgroup/cpuset: Miscellaneous cleanups & add helper functions Waiman Long
2022-05-10 15:34 ` [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective Waiman Long
2022-06-12 17:40 ` Tejun Heo
2022-06-12 17:41 ` Tejun Heo
2022-06-13 2:53 ` Waiman Long
2022-06-13 2:55 ` Tejun Heo
[not found] ` <YqanEZZooeZwtutA-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2022-06-13 3:04 ` Waiman Long
2022-06-13 14:02 ` Michal Koutný
2022-06-13 16:47 ` Waiman Long
2022-06-13 17:23 ` Tejun Heo
2022-06-13 2:50 ` Waiman Long
[not found] ` <20220510153413.400020-1-longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2022-05-10 15:34 ` [PATCH v11 1/8] cgroup/cpuset: Add top_cpuset check in update_tasks_cpumask() Waiman Long
2022-05-10 15:34 ` [PATCH v11 4/8] cgroup/cpuset: Relax constraints to partition & cpus changes Waiman Long
2022-05-10 15:34 ` [PATCH v11 5/8] cgroup/cpuset: Add a new isolated cpus.partition type Waiman Long
2022-05-10 15:34 ` [PATCH v11 6/8] cgroup/cpuset: Show invalid partition reason string Waiman Long
2022-05-10 15:34 ` [PATCH v11 7/8] cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst Waiman Long
2022-06-12 17:49 ` Tejun Heo
2022-06-13 3:02 ` Waiman Long
[not found] ` <404171dc-0da3-21f2-5003-9718f875e967-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2022-06-13 3:12 ` Tejun Heo
2022-06-13 13:18 ` Waiman Long
2022-06-13 17:06 ` Waiman Long
[not found] ` <YqarMyNo9oHxhZFh-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2022-06-13 14:24 ` Michal Koutný
2022-06-13 17:28 ` Tejun Heo
2022-06-13 17:55 ` Michal Koutný
[not found] ` <20220613175548.GB21665-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2022-06-13 18:00 ` Tejun Heo
[not found] ` <Yqd7WMFj6AEyV3Cy-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2022-06-14 11:53 ` Michal Koutný [this message]
[not found] ` <20220614115345.GA6771-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2022-06-27 19:10 ` Tejun Heo
2022-06-30 14:32 ` Michal Koutný
2022-06-30 22:53 ` Tejun Heo
2022-05-10 15:34 ` [PATCH v11 8/8] kselftest/cgroup: Add cpuset v2 partition root state test Waiman Long
[not found] ` <20220510153413.400020-9-longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2022-05-21 10:24 ` Muhammad Usama Anjum
2022-05-22 2:40 ` Waiman Long
2022-05-20 16:00 ` [PATCH v11 0/8] cgroup/cpuset: cpu partition code enhancements Sebastian Andrzej Siewior
2022-05-20 16:46 ` Waiman Long
2022-05-24 16:48 ` Sebastian Andrzej Siewior
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220614115345.GA6771@blackbody.suse.cz \
--to=mkoutny-ibi9rg/b67k@public.gmane.org \
--cc=akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org \
--cc=cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=corbet-T1hC0tSOHrs@public.gmane.org \
--cc=frederic-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=guro-b10kYP2dOMg@public.gmane.org \
--cc=hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org \
--cc=juri.lelli-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org \
--cc=longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=pauld-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org \
--cc=shuah-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox