linux-kernel - Re: [8/8, v6] NUMA Hotplug Emulator: implement debugfs interface for memory probe

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Message-ID: <20101201234514.GA13509@shaohui>
Date:	Thu, 2 Dec 2010 07:45:14 +0800
From:	Shaohui Zheng <shaohui.zheng@...el.com>
To:	David Rientjes <rientjes@...gle.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, dave@...ux.vnet.ibm.com,
	gregkh@...e.de, Haicheng Li <haicheng.li@...el.com>
Subject: Re: [8/8, v6] NUMA Hotplug Emulator: implement debugfs interface
 for memory probe

On Wed, Dec 01, 2010 at 04:57:35PM -0800, David Rientjes wrote:
> On Tue, 30 Nov 2010, shaohui.zheng@...el.com wrote:
> 
> > From: Shaohui Zheng <shaohui.zheng@...el.com>
> > 
> > Implement a debugfs inteface /sys/kernel/debug/mem_hotplug/probe for meomory hotplug
> > emulation.  it accepts the same parameters like
> > /sys/devices/system/memory/probe.
> > 
> 
> NACK, we don't need two interfaces to do the same thing.  

You may not know the background, the sysfs memory/probe interface is a general
interface.  Even through we have a debugfs interface, we should still keep it.

For test purpose, the sysfs is enough, according to the comments from Greg & Dave,
we create the debugfs interface.

-- 
Thanks & Regards,
Shaohui

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