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From: Tejun Heo <tj@kernel.org>
To: Waiman Long <llong@redhat.com>
Cc: Zefan Li <lizefan.x@bytedance.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Jonathan Corbet <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>,
	cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Roman Gushchin <guro@fb.com>, Phil Auld <pauld@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>
Subject: Re: [PATCH v2 2/6] cgroup/cpuset: Clarify the use of invalid partition root
Date: Fri, 16 Jul 2021 11:18:40 -1000	[thread overview]
Message-ID: <YPH3sF56gK71CxXY@mtj.duckdns.org> (raw)
In-Reply-To: <e8c538a8-bf5c-b04c-1b21-ac22cd158dd1@redhat.com>

Hello,

On Fri, Jul 16, 2021 at 05:12:17PM -0400, Waiman Long wrote:
> Are you suggesting that we add a cpuset.cpus.events file that allows
> processes to be notified if an event (e.g. hotplug) that changes a partition
> root to invalid partition happens or when explicit change to a partition
> root fails? Will that be enough to satisfy your requirement?

Yeah, something like that or make the current state file generate events on
state transitions.

Thanks.

-- 
tejun

WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Waiman Long <llong-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>,
	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>
Subject: Re: [PATCH v2 2/6] cgroup/cpuset: Clarify the use of invalid partition root
Date: Fri, 16 Jul 2021 11:18:40 -1000	[thread overview]
Message-ID: <YPH3sF56gK71CxXY@mtj.duckdns.org> (raw)
In-Reply-To: <e8c538a8-bf5c-b04c-1b21-ac22cd158dd1-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

Hello,

On Fri, Jul 16, 2021 at 05:12:17PM -0400, Waiman Long wrote:
> Are you suggesting that we add a cpuset.cpus.events file that allows
> processes to be notified if an event (e.g. hotplug) that changes a partition
> root to invalid partition happens or when explicit change to a partition
> root fails? Will that be enough to satisfy your requirement?

Yeah, something like that or make the current state file generate events on
state transitions.

Thanks.

-- 
tejun

  reply	other threads:[~2021-07-16 21:18 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-21 18:49 [PATCH v2 0/6] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus Waiman Long
2021-06-21 18:49 ` Waiman Long
2021-06-21 18:49 ` [PATCH v2 1/6] cgroup/cpuset: Miscellaneous code cleanup Waiman Long
2021-06-21 18:49   ` Waiman Long
2021-06-21 18:49 ` [PATCH v2 2/6] cgroup/cpuset: Clarify the use of invalid partition root Waiman Long
2021-06-26 10:53   ` Tejun Heo
2021-06-28 13:06     ` Waiman Long
2021-06-28 13:06       ` Waiman Long
2021-07-05 17:51       ` Tejun Heo
2021-07-16 18:44         ` Waiman Long
2021-07-16 18:44           ` Waiman Long
2021-07-16 18:59           ` Waiman Long
2021-07-16 18:59             ` Waiman Long
2021-07-16 20:08             ` Waiman Long
2021-07-16 20:08               ` Waiman Long
2021-07-16 20:46               ` Tejun Heo
2021-07-16 21:12                 ` Waiman Long
2021-07-16 21:12                   ` Waiman Long
2021-07-16 21:18                   ` Tejun Heo [this message]
2021-07-16 21:18                     ` Tejun Heo
2021-07-16 21:28                     ` Waiman Long
2021-07-16 21:28                       ` Waiman Long
2021-06-21 18:49 ` [PATCH v2 3/6] cgroup/cpuset: Add a new isolated cpus.partition type Waiman Long
2021-06-21 18:49   ` Waiman Long
2021-06-24 12:51   ` Michal Koutný
2021-06-24 12:51     ` Michal Koutný
2021-06-24 15:23     ` Waiman Long
2021-06-24 15:23       ` Waiman Long
2021-06-21 18:49 ` [PATCH v2 4/6] cgroup/cpuset: Allow non-top parent partition root to distribute out all CPUs Waiman Long
2021-06-21 18:49   ` Waiman Long
2021-06-21 18:49 ` [PATCH v2 5/6] cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst Waiman Long
2021-06-21 18:49   ` Waiman Long
2021-06-21 18:49 ` [PATCH v2 6/6] kselftest/cgroup: Add cpuset v2 partition root state test Waiman Long

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