linux-kernel - Re: [PATCH] cpusets: Make cpus_allowed and mems

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Message-ID: <54365886.7010506@linux.vnet.ibm.com>
Date:	Thu, 09 Oct 2014 15:12:30 +0530
From:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
To:	Preeti U Murthy <preeti@...ux.vnet.ibm.com>
CC:	svaidy@...ux.vnet.ibm.com, Peter Zijlstra <peterz@...radead.org>,
	rjw@...ysocki.net, lizefan@...wei.com,
	Anton Blanchard <anton@...ba.org>, Tejun Heo <tj@...nel.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>, cgroups@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpusets: Make cpus_allowed and mems_allowed masks hotplug
 invariant

On 10/09/2014 10:42 AM, Preeti U Murthy wrote:
> Hi Raghu,

> remove_tasks_in_empty_cpuset() is called on the legacy hierarchy when
> the cpuset becomes empty, hence we require it. But you are right its not
> called on the default hierarchy.

My point was if legacy hierarchy follows unified hierarchy in effective
cpuset handling, we will never endup with a empty effective cpuset and
hence your patch could remove the remove_tasks_in_empty_cpuset() part
too..

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