linux-kernel - Re: [PATCH 1/2] workqueue: update numa affinity info at node hotplug

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Message-ID: <20141225201156.GA22951@htj.dyndns.org>
Date:	Thu, 25 Dec 2014 15:11:56 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Lai Jiangshan <laijs@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Ishimatsu, Yasuaki/石松 靖章" 
	<isimatu.yasuaki@...fujitsu.com>,
	Tang Chen <tangchen@...fujitsu.com>,
	"guz.fnst@...fujitsu.com" <guz.fnst@...fujitsu.com>
Subject: Re: [PATCH 1/2] workqueue: update numa affinity info at node hotplug

On Wed, Dec 17, 2014 at 01:56:29PM +0900, Kamezawa Hiroyuki wrote:
> Let me correct my words. Main purpose of this patch 1/2 is handling a case "node disappers" after boot.
> And try to handle physicall node hotplug caes.
> 
> Changes of cpu<->node relationship at CPU_ONLINE is handled in patch 2/2.

Can you please make numa code itself maintain the cpu to nodemask
maps?  Let's make workqueue a simple consumer of that and we don't
have proper notification mechanism for node up/down events?

Thanks.

-- 
tejun
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