linux-kernel - Re: [patch 2/2 v2] mm: add node hotplug emulation

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Date:	Sun, 21 Nov 2010 16:56:58 -0800
From:	Greg KH <gregkh@...e.de>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Shaohui Zheng <shaohui.zheng@...el.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Haicheng Li <haicheng.li@...el.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org
Subject: Re: [patch 2/2 v2] mm: add node hotplug emulation

On Sun, Nov 21, 2010 at 03:08:17PM -0800, David Rientjes wrote:
> Add an interface to allow new nodes to be added when performing memory
> hot-add.  This provides a convenient interface to test memory hotplug
> notifier callbacks and surrounding hotplug code when new nodes are
> onlined without actually having a machine with such hotpluggable SRAT
> entries.
> 
> This adds a new debugfs interface at /sys/kernel/debug/hotplug/add_node

The rule for debugfs is "there are no rules", but perhaps you might want
to name "hotplug" a bit more specific for what you are doing?  "hotplug"
means pretty much anything these days, so how about s/hotplug/node/
instead as that is what you are controlling.

Just a suggestion...

greg k-h
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