linux-kernel - Re: 2.6.22-rc4-mm1

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Message-ID: <20070611065145.GA23404@linux-sh.org>
Date:	Mon, 11 Jun 2007 15:51:45 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Mariusz Kozlowski <m.kozlowski@...land.pl>,
	linux-kernel@...r.kernel.org, Neil Brown <neilb@...e.de>,
	"Leech, Christopher" <christopher.leech@...el.com>,
	Jeff Garzik <jeff@...zik.org>, davem@...emloft.net,
	Wolfgang Denk <wd@...x.de>
Subject: Re: 2.6.22-rc4-mm1

On Sun, Jun 10, 2007 at 10:01:34PM -0700, Dan Williams wrote:
> Overall, I feel that async_tx is perhaps justifiably receiving the
> silent treatment because offload engines are not a mainstream
> occurrence.  Currently only people with an Xscale IOP or a PPC 440spe
> [4] will notice that mainline lacks support for all the features of
> their platform.  I see async_tx as a nod to the embedded space where
> offload engines act to make up for the absence of multi-Ghz CPUs with
> streaming SIMD instructions.
> 
For what it's worth, I'm planning on tying in the SH DMA stuff to
the dmaengine code, as the async_tx stuff certainly has quite a few bits
of interest. This is probably something I won't get around to for 2.6.23
though, due to time constraints.
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