linux-kernel - Re: [PATCH 08/29] Disintegrate asm/system.h for C6X

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Date:	Wed, 07 Mar 2012 16:43:55 -0500
From:	Mark Salter <msalter@...hat.com>
To:	David Howells <dhowells@...hat.com>
Cc:	paul.gortmaker@...driver.com, hpa@...or.com,
	torvalds@...ux-foundation.org, sfr@...b.auug.org.au,
	mingo@...hat.com, arnd@...db.de, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 08/29] Disintegrate asm/system.h for C6X

On Wed, 2012-03-07 at 21:36 +0000, David Howells wrote:
> Mark Salter <msalter@...hat.com> wrote:
> 
> > > Disintegrate asm/system.h for C6X.  Not compiled.  Appears to be missing
> > > asm/atomic.h and asm/bug.h.
> > 
> > Not missing. C6X uses the asm-generic versions which makes me think that
> > at least the atomic.h and barrier.h bits could have reasonable generic
> > versions for UP-only systems.
> 
> How does this work?  Looking at linux/atomic.h, it should fail to build as
> pretty much the first thing it does is include asm/atomic.h - which doesn't
> exist for C6X.  Shouldn't it at least have a #inclusion to the asm-generic
> header?

Kbuild takes care of it. See arch/c6x/include/Kbuild for the generic
headers C6X uses as-is.



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