netdev - Re: [Xen-devel] [PATCH 4/4] [Net] Support accelerated network plugin modules

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Date:	Fri, 15 Jun 2007 09:06:14 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	"Zhu Han" <schumi.han@...il.com>
Cc:	"Kieran Mansley" <kmansley@...arflare.com>,
	xen-devel@...ts.xensource.com, netdev@...r.kernel.org,
	herbert@...dor.apana.org.au
Subject: Re: [Xen-devel] [PATCH 4/4] [Net] Support accelerated network
 plugin modules

On Fri, 15 Jun 2007 11:59:43 -0400
"Zhu Han" <schumi.han@...il.com> wrote:

> Hi, Kieran,
> 
> I'm just wonder why you try to acquire the lock and increase the
> hooks_usecount each time when you use the hook routine. Is there any
> generic ways to synchronze the code path using hook routines and
> netfront_accelerator_unloaded, considering you can synchronize the
> 

Learn to use RCU for this. It would reduce the lock overhead.
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