linux-kernel - Re: [PATCH] Intel IXP4xx network drivers v.3

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Message-ID: <20070508125921.GA32669@xi.wantstofly.org>
Date:	Tue, 8 May 2007 14:59:21 +0200
From:	Lennert Buytenhek <buytenh@...tstofly.org>
To:	Alexey Zaytsev <alexey.zaytsev@...il.com>
Cc:	Krzysztof Halasa <khc@...waw.pl>,
	Michael-Luke Jones <mlj28@....ac.uk>,
	Jeff Garzik <jeff@...zik.org>, netdev@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>,
	Russell King <rmk@....linux.org.uk>,
	ARM Linux Mailing List 
	<linux-arm-kernel@...ts.arm.linux.org.uk>
Subject: Re: [PATCH] Intel IXP4xx network drivers v.3 - QMGR

On Tue, May 08, 2007 at 04:47:31PM +0400, Alexey Zaytsev wrote:

> > As with Christian's driver, I don't know whether an SRAM allocator
> > makes much sense.  We can just set up a static allocation map for the
> > in-tree drivers and leave out the allocator altogether.  I.e. I don't
> > think it's worth the complexity (and just because the butt-ugly Intel
> > code has an allocator isn't a very good reason. :-)
> 
> Is the qmgr used when the NPEs are utilized as DMA engines?

I'm not sure, but probably yes.


> And is the allocator needed in this case?

If you statically partition the available queue SRAM, no.
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