From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Waiman Long <longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: 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>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Juri Lelli <juri.lelli-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Valentin Schneider
<vschneid-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Frederic Weisbecker
<frederic-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mrunal Patel <mpatel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Ryan Phillips <rphillips-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Brent Rowsell <browsell-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Peter Hunt <pehunt-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Phil Auld <pauld-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH v4 8/9] cgroup/cpuset: Documentation update for partition
Date: Mon, 10 Jul 2023 15:07:11 -1000 [thread overview]
Message-ID: <ZKyrP74UzVb4Ltwi@slm.duckdns.org> (raw)
In-Reply-To: <a429e60a-fc4f-60b0-3978-71596fed9542-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Hello,
On Mon, Jul 10, 2023 at 08:53:18PM -0400, Waiman Long wrote:
> For local partition, it doesn't make sense to have a cpust.cpus.exclusive
> that is not the same as cpuset.cpus as it artificially reduce the set of
> CPUs that can be used in a partition. In the case of a remote partition, the
Yeah, I was wondering about local partitions. "Automatic but can be
overridden" behavior becomes confusing if it's difficult for the user to
easily tell which part is automatic when. I wonder whether it'd be better to
make the condition static - e.g. for a partition cgroup, cpus.exclusive
always contains all bits in cpus no matter what value is written to it. Or,
if we separate out cpus.exclusive and cpus.exclusive.effective, no matter
what cpus.exclusive is set, a partition root's cpus.exclusive.effective
always includes all bits in cpus.effective.
Thanks.
--
tejun
next prev parent reply other threads:[~2023-07-11 1:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-27 14:34 [PATCH v4 0/9] cgroup/cpuset: Support remote partitions Waiman Long
2023-06-27 14:35 ` [PATCH v4 1/9] cgroup/cpuset: Inherit parent's load balance state in v2 Waiman Long
2023-06-27 14:35 ` [PATCH v4 2/9] cgroup/cpuset: Extract out CS_CPU_EXCLUSIVE & CS_SCHED_LOAD_BALANCE handling Waiman Long
2023-06-27 14:35 ` [PATCH v4 3/9] cgroup/cpuset: Improve temporary cpumasks handling Waiman Long
[not found] ` <20230627143508.1576882-1-longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2023-06-27 14:35 ` [PATCH v4 4/9] cgroup/cpuset: Allow suppression of sched domain rebuild in update_cpumasks_hier() Waiman Long
2023-07-10 21:01 ` Tejun Heo
2023-06-27 14:35 ` [PATCH v4 8/9] cgroup/cpuset: Documentation update for partition Waiman Long
2023-07-10 21:30 ` Tejun Heo
[not found] ` <ZKx4ZJowRhRtjZxB-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2023-07-11 0:21 ` Waiman Long
2023-07-11 0:42 ` Tejun Heo
2023-07-11 0:53 ` Waiman Long
[not found] ` <a429e60a-fc4f-60b0-3978-71596fed9542-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2023-07-11 1:07 ` Tejun Heo [this message]
2023-07-11 3:24 ` Waiman Long
2023-06-27 14:35 ` [PATCH v4 5/9] cgroup/cpuset: Add cpuset.cpus.exclusive for v2 Waiman Long
2023-06-27 14:35 ` [PATCH v4 6/9] cgroup/cpuset: Introduce remote partition Waiman Long
2023-06-27 14:35 ` [PATCH v4 7/9] cgroup/cpuset: Check partition conflict with housekeeping setup Waiman Long
2023-06-27 14:35 ` [PATCH v4 9/9] cgroup/cpuset: Extend test_cpuset_prs.sh to test remote partition Waiman Long
2023-07-10 21:08 ` [PATCH v4 0/9] cgroup/cpuset: Support remote partitions Tejun Heo
2023-07-11 0:33 ` Waiman Long
2023-07-11 1:00 ` Tejun Heo
2023-07-11 1:38 ` Waiman Long
2023-07-11 1:45 ` Tejun Heo
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