linux-kernel - Re: [RFC] arm: use built-in byte swap function

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Message-ID: <1359670248.27468.13.camel@shinybook.infradead.org>
Date:	Thu, 31 Jan 2013 22:11:25 +0000
From:	"Woodhouse, David" <david.woodhouse@...el.com>
To:	Kim Phillips <kim.phillips@...escale.com>
CC:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Borislav Petkov <bp@...en8.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Santos <daniel.santos@...ox.com>,
	David Rientjes <rientjes@...gle.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rob Herring <robherring2@...il.com>
Subject: Re: [RFC] arm: use built-in byte swap function

On Thu, 2013-01-31 at 14:59 -0600, Kim Phillips wrote:
> 
> - add new ARCH_DEFINES_BUILTIN_BSWAP (see Kconfig help).

Ick, no.

>   - if set, generic compiler header does not set HAVE_BUILTIN_BSWAPxx

It won't do that anyway if !ARCH_USE_BUILTIN_BSWAP. I don't see the
point in adding a new config option just for this.

If you want to define __HAVE_BUILTIN_BSWAPxx__ for yourself manually,
just go ahead and do so. As I said, if lots of architectures end up
doing it then we'll worry about cleaning things up when we've got a
better picture of who needs what.

-- 
                   Sent with MeeGo's ActiveSync support.

David Woodhouse                            Open Source Technology Centre
David.Woodhouse@...el.com                              Intel Corporation




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