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From: Will Deacon <will.deacon@arm.com>
To: Michal Simek <monstr@monstr.eu>
Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"dhowells@redhat.com" <dhowells@redhat.com>,
	"broonie@linaro.org" <broonie@linaro.org>,
	"benh@kernel.crashing.org" <benh@kernel.crashing.org>,
	"peterz@infradead.org" <peterz@infradead.org>,
	"paulmck@linux.vnet.ibm.com" <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH 18/18] asm-generic: io: define relaxed accessor macros unconditionally
Date: Tue, 22 Apr 2014 16:18:09 +0100	[thread overview]
Message-ID: <20140422151809.GF9820@arm.com> (raw)
In-Reply-To: <5356782A.9050809@monstr.eu>

Hi Michal,

On Tue, Apr 22, 2014 at 03:09:46PM +0100, Michal Simek wrote:
> On 04/17/2014 03:44 PM, Will Deacon wrote:
> > Now that no architectures using asm-generic/io.h define their own relaxed
> > accessors, the dummy definitions can be used unconditionally.
> > 
> > Cc: Arnd Bergmann <arnd@arndb.de>
> > Signed-off-by: Will Deacon <will.deacon@arm.com>
> > ---
> >  include/asm-generic/io.h | 18 ------------------
> >  1 file changed, 18 deletions(-)
> 
> Do we need this? I think there could be a need to overwrite them.
> Currently we are just lucky that architecture which uses asm-generic/io.h
> don't need to overwrite it.
> But I expect that all archs should use asm-generic/io.h to clean
> architecture io.h exactly I have done it for Microblaze.

I'm open to keeping the conditional definitions, but it introduces a
discrepancy with the non-relaxed versions, which are defined unconditionally
(although the underlying __raw_* accessors can be overridden).

Will

  reply	other threads:[~2014-04-22 15:19 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-17 13:44 [PATCH 00/18] Cross-architecture definitions of relaxed MMIO accessors Will Deacon
2014-04-17 13:44 ` [PATCH 01/18] asm-generic: io: implement relaxed accessor macros as conditional wrappers Will Deacon
2014-04-17 13:44 ` [PATCH 02/18] microblaze: io: remove dummy relaxed accessor macros Will Deacon
2014-04-22 13:53   ` Michal Simek
2014-04-17 13:44 ` [PATCH 03/18] s390: io: remove dummy relaxed accessor macros for reads Will Deacon
2014-04-17 13:44 ` [PATCH 04/18] xtensa: " Will Deacon
2014-04-17 13:44 ` [PATCH 05/18] alpha: io: implement relaxed accessor macros for writes Will Deacon
2014-04-17 13:44 ` [PATCH 06/18] frv: io: implement dummy " Will Deacon
2014-04-17 13:44 ` [PATCH 07/18] cris: " Will Deacon
2014-04-22 13:47   ` Jesper Nilsson
2014-04-17 13:44 ` [PATCH 08/18] ia64: " Will Deacon
2014-04-17 13:44 ` [PATCH 09/18] m32r: " Will Deacon
2014-04-17 13:44 ` [PATCH 10/18] m68k: " Will Deacon
2014-04-17 16:07   ` Geert Uytterhoeven
2014-04-17 13:44 ` [PATCH 11/18] mn10300: " Will Deacon
2014-04-17 13:44 ` [PATCH 12/18] parisc: " Will Deacon
2014-04-17 13:44 ` [PATCH 13/18] powerpc: " Will Deacon
2014-04-17 13:44 ` [PATCH 14/18] sparc: " Will Deacon
2014-04-17 13:44 ` [PATCH 15/18] tile: " Will Deacon
2014-04-17 14:52   ` Chris Metcalf
2014-04-17 13:44 ` [PATCH 16/18] x86: " Will Deacon
2014-04-22 16:08   ` Will Deacon
2014-05-21  1:53     ` Brian Norris
2014-05-21  9:22       ` Will Deacon
2014-04-17 13:44 ` [PATCH 17/18] documentation: memory-barriers: clarify relaxed io accessor semantics Will Deacon
2014-04-17 13:44 ` [PATCH 18/18] asm-generic: io: define relaxed accessor macros unconditionally Will Deacon
2014-04-22 14:09   ` Michal Simek
2014-04-22 15:18     ` Will Deacon [this message]
2014-04-23  7:12       ` Michal Simek
2014-04-23  7:23     ` Sam Ravnborg
2014-04-23  7:36       ` Michal Simek
2014-04-17 14:00 ` [PATCH 00/18] Cross-architecture definitions of relaxed MMIO accessors Peter Zijlstra
2014-04-17 14:15   ` Will Deacon
2014-04-17 21:36   ` Benjamin Herrenschmidt
2014-05-01 11:10     ` Will Deacon
2014-04-17 15:36 ` Sam Ravnborg
2014-04-17 15:47   ` Will Deacon
2014-04-17 19:15     ` Sam Ravnborg
2014-04-22 13:43       ` Will Deacon
2014-04-22 14:30         ` Sam Ravnborg

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