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From: Tejun Heo <tj@kernel.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Li Zefan <lizefan@huawei.com>, cgroups <cgroups@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>,
	Valentin Schneider <valentin.schneider@arm.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [regression] cpuset: offlined CPUs removed from affinity masks
Date: Thu, 12 Mar 2020 14:26:19 -0400	[thread overview]
Message-ID: <20200312182618.GE79873@mtj.duckdns.org> (raw)
In-Reply-To: <316507033.21078.1583597207356.JavaMail.zimbra@efficios.com>

Hello,

On Sat, Mar 07, 2020 at 11:06:47AM -0500, Mathieu Desnoyers wrote:
> Looking into solving this, one key issue seems to get in the way: cpuset
> appear to care about not allowing to create a cpuset which has no currently
> active CPU where to run, e.g.:
...
> Clearly, there is an intent that cpusets take the active mask into
> account to prohibit creating an empty cpuset, but nothing prevents
> cpu hotplug from creating an empty cpuset.
> 
> I wonder how to solve this inconsistency ?

Please try cpuset in cgroup2. It shouldn't have those issues.

Thanks.

-- 
tejun

  reply	other threads:[~2020-03-12 18:26 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16 17:41 Mathieu Desnoyers
2020-01-16 18:27 ` Valentin Schneider
2020-02-17 16:03 ` Mathieu Desnoyers
2020-02-19 15:19   ` Tejun Heo
2020-02-19 15:43     ` Mathieu Desnoyers
2020-02-19 15:47       ` Tejun Heo
2020-02-19 15:50         ` Mathieu Desnoyers
2020-02-19 15:52           ` Tejun Heo
2020-02-19 16:08             ` Mathieu Desnoyers
2020-02-19 16:12               ` Tejun Heo
2020-03-07 16:06                 ` Mathieu Desnoyers
2020-03-12 18:26                   ` Tejun Heo [this message]
2020-03-12 19:47                     ` Mathieu Desnoyers
2020-03-24 18:01                       ` Tejun Heo
2020-03-24 19:30                         ` Mathieu Desnoyers
2020-03-30 19:53                           ` Mathieu Desnoyers

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