From: Keith Owens <kaos@sgi.com>
To: Matt Helsley <matthltc@us.ibm.com>
cc: John Hesterberg <jh@sgi.com>, Jes Sorensen <jes@trained-monkey.org>,
       Shailabh Nagar <nagar@watson.ibm.com>, Andrew Morton <akpm@osdl.org>,
       Jay Lan <jlan@engr.sgi.com>, LKML <linux-kernel@vger.kernel.org>,
       elsa-devel@lists.sourceforge.net, lse-tech@lists.sourceforge.net,
       CKRM-Tech <ckrm-tech@lists.sourceforge.net>, Paul Jackson <pj@sgi.com>,
       Erik Jacobson <erikj@sgi.com>, Jack Steiner <steiner@sgi.com>
Subject: Re: [Lse-tech] Re: [ckrm-tech] Re: [PATCH 00/01] Move Exit Connectors 
In-reply-to: Your message of "Wed, 11 Jan 2006 21:26:08 -0800."
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Date: Thu, 12 Jan 2006 16:45:54 +1100
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Matt Helsley (on Wed, 11 Jan 2006 21:26:08 -0800) wrote:
>On Thu, 2006-01-12 at 14:29 +1100, Keith Owens wrote:
>> An alternative patch that requires no locks and does not even require
>> RCU is in http://marc.theaimsgroup.com/?l=linux-kernel&m=113392370322545&w=2
>> 
>
>	Interesting. Might the 'inuse' flags suffer from bouncing due to false
>sharing?

It would, but that was the least of my worries.  Algorithm correctness
first, then tune it.  If necessary it could be converted to a per cpu
variable, as long as the timing between creating the per cpu variables
and invoking callbacks from hotplug cpu was correct.

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