linux-kernel - Re: [PATCH 0/2] Add dev_sysdata and use it for ACPI

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Date:	Thu, 9 Nov 2006 17:04:35 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Benjamin Herrenschmidt <benh@....ibm.com>
Cc:	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Len Brown <len.brown@...el.com>, Andrew Morton <akpm@...l.org>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH 0/2] Add dev_sysdata and use it for ACPI

On Thu, 09 Nov 2006 11:45:21 +1100,
Benjamin Herrenschmidt <benh@....ibm.com> wrote:

>  - Add a dev_sysdata structure to struct device whose content is arch
> specific. It will allow architectures like powerpc, arm, i386, ... who
> need different types of DMA ops for busses and other kind of auxilliary
> data for devices in general (numa node id, firmware data, etc...) to put
> them in there, without bloating all architectures. The patch adds an
> empty definition for the structure to all architectures.

I like this. If we could move the dma stuff in there, we could get rid
of it on s390 where it is just bloat we drag around...

(Maybe dev_archdata would be a better name, since the definition is
architecture specific?)

-- 
Cornelia Huck
Linux for zSeries Developer
Tel.: +49-7031-16-4837, Mail: cornelia.huck@...ibm.com
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