linux-kernel - Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework

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Message-ID: <4C7B6B86.3080502@ladisch.de>
Date:	Mon, 30 Aug 2010 10:27:50 +0200
From:	Clemens Ladisch <clemens@...isch.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Michal Nazarewicz <m.nazarewicz@...sung.com>,
	linux-mm@...ck.org, Daniel Walker <dwalker@...eaurora.org>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Hans Verkuil <hverkuil@...all.nl>,
	Jonathan Corbet <corbet@....net>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Pawel Osciak <p.osciak@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Zach Pfeffer <zpfeffer@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org, Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework

Andrew Morton wrote:
> It would help (a lot) if we could get more attention and buyin and
> fedback from the potential clients of this code.  rmk's feedback is
> valuable.  Have we heard from the linux-media people?  What other
> subsystems might use it?  ieee1394 perhaps?

All FireWire controllers are OHCI and use scatter-gather lists.

Most USB controllers require continuous memory for USB packets; the USB
framework has its own DMA buffer cache.

Some sound cards have no IOMMU; the ALSA framework preallocates buffers
for those.


Regards,
Clemens
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