linux-kernel - Re: [1/7,v8] NUMA Hotplug Emulator: documentation

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Message-ID: <20101209002302.GB5798@shaohui>
Date:	Thu, 9 Dec 2010 08:23:02 +0800
From:	Shaohui Zheng <shaohui.zheng@...el.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Eric B Munson <emunson@...bm.net>,
	Shaohui Zheng <shaohui.zheng@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, haicheng.li@...ux.intel.com,
	lethal@...ux-sh.org, Andi Kleen <ak@...ux.intel.com>,
	dave@...ux.vnet.ibm.com, Greg Kroah-Hartman <gregkh@...e.de>,
	Haicheng Li <haicheng.li@...el.com>
Subject: Re: [1/7,v8] NUMA Hotplug Emulator: documentation

On Wed, Dec 08, 2010 at 01:16:10PM -0800, David Rientjes wrote:
> On Wed, 8 Dec 2010, Eric B Munson wrote:
> 
> > Shaohui,
> > 
> > I was able to online a cpu to node 0 successfully.  My problem was that I did
> > not take the cpu offline before I released it.  Everything looks to be working
> > for me.
> > 
> 
> I think it should fail more gracefully than triggering WARN_ON()s because 
> of duplicate sysfs dentries though, right?

Yes, we should do more checking on the return value, the duplicate dentries can
be avoided.  

Another solution: force user to offline the cpu before we do cpu release.

-- 
Thanks & Regards,
Shaohui

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