linux-kernel - Re: [7/8,v3] NUMA Hotplug Emulator: extend memory probe interface to support NUMA

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Date:	Fri, 19 Nov 2010 08:36:09 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Shaohui Zheng <shaohui.zheng@...el.com>
Cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, haicheng.li@...ux.intel.com,
	lethal@...ux-sh.org, ak@...ux.intel.com,
	shaohui.zheng@...ux.intel.com, Haicheng Li <haicheng.li@...el.com>,
	Wu Fengguang <fengguang.wu@...el.com>, Greg KH <greg@...ah.com>
Subject: Re: [7/8,v3] NUMA Hotplug Emulator: extend memory probe interface
 to support NUMA

On Fri, 2010-11-19 at 15:51 +0800, Shaohui Zheng wrote:
> the purpose of hotplug emulator is providing a possible solution for cpu/memory
> hotplug testing, the interface upgrading is not part of emulator. Let's forget
> configfs here. 

If it's just for testing, you're right, we probably shouldn't go to the
trouble of making a new interface.  At the same time, we shouldn't put
something in /sys or configfs that we're not committed to, long-term.

So, not to replace the memory probe file, but _only_ to drive the new
debug-only node hot-add, I think its appropriate place is debugfs.

-- Dave

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