linux-kernel - Re: [PATCH 9/24] make atomic_read() behave consistently on ia64

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Message-ID: <Pine.LNX.4.64.0708130939470.16526@anakin>
Date:	Mon, 13 Aug 2007 09:39:55 +0200 (CEST)
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Chris Snook <csnook@...hat.com>
Cc:	Paul Mackerras <paulus@...ba.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Luck, Tony" <tony.luck@...el.com>,
	Andreas Schwab <schwab@...e.de>, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, netdev@...r.kernel.org,
	akpm@...ux-foundation.org, ak@...e.de, heiko.carstens@...ibm.com,
	davem@...emloft.net, schwidefsky@...ibm.com, wensong@...ux-vs.org,
	horms@...ge.net.au, wjiang@...ilience.com, cfriesen@...tel.com,
	zlynx@....org, rpjday@...dspring.com, jesper.juhl@...il.com
Subject: Re: [PATCH 9/24] make atomic_read() behave consistently on ia64

On Mon, 13 Aug 2007, Chris Snook wrote:
> Paul Mackerras wrote:
> > Chris Snook writes:
> > > I'll do this for the whole patchset.  Stay tuned for the resubmit.
> > 
> > Could you incorporate Segher's patch to turn atomic_{read,set} into
> > asm on powerpc?  Segher claims that using asm is really the only
> > reliable way to ensure that gcc does what we want, and he seems to
> > have a point.
> > 
> > Paul.
> 
> I haven't seen a patch yet.  I'm going to resubmit with inline volatile-cast
> atomic[64]_[read|set] on all architectures as a reference point, and if anyone
> wants to go and implement some of them in assembly, that's between them and
> the relevant arch maintainers.  I have no problem with (someone else) doing it
> in assembly.  I just don't think it's necessary and won't let it hold up the
> effort to get consistent behavior on all architectures.

http://lkml.org/lkml/2007/8/10/470

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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