linux-kernel - Re: [PATCH] ARM: Use asm-generic/sizes.h

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Date:	Tue, 22 Mar 2011 20:16:38 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Guan Xuetao <gxt@...c.pku.edu.cn>
CC:	'Russell King - ARM Linux' <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	'Arnd Bergmann' <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: Use asm-generic/sizes.h

On 03/22/2011 06:29 PM, Guan Xuetao wrote:
>> -----Original Message-----
>> From: Stephen Boyd [mailto:sboyd@...eaurora.org]
>> Sent: Wednesday, March 23, 2011 2:40 AM
>> To: Guan Xuetao
>> Cc: 'Arnd Bergmann'; linux-arm-kernel@...ts.infradead.org; 'Russell King - ARM Linux'; linux-kernel@...r.kernel.org
>> Subject: Re: [PATCH] ARM: Use asm-generic/sizes.h
>> Ah, I didn't notice this part. SZ_48M is actually used by ARM code so
>> that would need to be added to the generic header should we go with this
>> patch.
> IMO, the content of asm-generic/sizes.h should only include power-of-2 sizes definitions.
> And SZ_48M could be replaced by (SZ_32M | SZ_16M) or (SZ_32M + SZ_16M), or added to arch-specific headers.
>
>

I'm hoping that kbuild gets asm-generic support sometime soon so files
with only a "#include <asm-generic/*>" are generated instead of living
in the tree. In that case I'd rather have the non power of 2 constants
added to the generic sizes.h and be done with it. There isn't any strong
technical reason to deny power of 2 constants from the generic header,
right?

Note: SH could also move to this if SZ_26M is put in the generic header.

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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