linux-kernel - Re: [PATCH] FRV: Fix the section attribute on UP DECLARE_PER

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Date:	Wed, 15 Apr 2009 18:54:46 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	David Howells <dhowells@...hat.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>, tj@...nel.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] FRV: Fix the section attribute on UP DECLARE_PER_CPU()


* David Howells <dhowells@...hat.com> wrote:

> I'd like Linus to pull my first patch, if he will.  That'll at 
> least allow FRV to build.  Could you review it?  That's the email 
> that started this thread, ensubjected:
> 
> 	[PATCH] FRV: Fix the section attribute on UP DECLARE_PER_CPU()

hm, this moves the section defines from a generic header into 
platform headers in essence - not a good move IMO.

Why not start a new linux/percpu_types.h header with just those 
defines in place, include it both from linux/percpu.h and from all 
the asm*/percpu.h files you modify in that patch?

This would fix your build problem minimally - and it would also seed 
the new percpu_types.h file that could start the untangling of this 
dependency hell.

(it would also be much easier to verify for correctness - you just 
move bits and include it trivially in places that need it.)

Am i missing something?

	Ingo
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