From: Will Deacon <will.deacon@arm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
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Subject: Re: [PATCH v3 01/17] asm-generic: io: implement relaxed accessor macros as conditional wrappers
Date: Thu, 25 Sep 2014 11:38:46 +0100 [thread overview]
Message-ID: <20140925103846.GI20043@arm.com> (raw)
In-Reply-To: <4501051.vdxhyhkTWv@wuerfel>
On Thu, Sep 25, 2014 at 11:32:00AM +0100, Arnd Bergmann wrote:
> On Wednesday 24 September 2014 18:17:20 Will Deacon wrote:
> > {read,write}{b,w,l,q}_relaxed are implemented by some architectures in
> > order to permit memory-mapped I/O accesses with weaker barrier semantics
> > than the non-relaxed variants.
> >
> > This patch adds wrappers to asm-generic so that drivers can rely on the
> > relaxed accessors being available, even if they don't always provide
> > weaker ordering guarantees. Since some architectures both include
> > asm-generic/io.h and define some relaxed accessors, the definitions here
> > are conditional for the time being.
> >
> > Cc: Arnd Bergmann <arnd@arndb.de>
> > Signed-off-by: Will Deacon <will.deacon@arm.com>
> > ---
> > include/asm-generic/io.h | 26 ++++++++++++++++++++++++++
> > 1 file changed, 26 insertions(+)
> >
>
> Acked-by: Arnd Bergmann <arnd@arndb.de>
Thanks, Arnd. Do you have other patches queued for asm-generic, or shall I
take this patch (on its own) via the arm64 tree?
Will
next prev parent reply other threads:[~2014-09-25 10:39 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-24 17:17 [PATCH v3 00/17] Cross-architecture definitions of relaxed MMIO accessors Will Deacon
2014-09-24 17:17 ` [PATCH v3 01/17] asm-generic: io: implement relaxed accessor macros as conditional wrappers Will Deacon
2014-09-25 10:32 ` Arnd Bergmann
2014-09-25 10:38 ` Will Deacon [this message]
2014-09-25 10:43 ` Arnd Bergmann
2014-09-25 11:44 ` Will Deacon
2014-09-24 17:17 ` [PATCH v3 02/17] microblaze: io: remove dummy relaxed accessor macros Will Deacon
2014-09-24 17:17 ` [PATCH v3 03/17] s390: io: remove dummy relaxed accessor macros for reads Will Deacon
2014-09-24 17:17 ` [PATCH v3 04/17] xtensa: " Will Deacon
2014-09-25 15:22 ` Max Filippov
2014-09-24 17:17 ` [PATCH v3 05/17] frv: io: implement dummy relaxed accessor macros for writes Will Deacon
2014-09-24 17:17 ` [PATCH v3 06/17] cris: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 07/17] ia64: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 08/17] m32r: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 09/17] m68k: " Will Deacon
2014-09-25 1:05 ` Greg Ungerer
2014-09-25 9:33 ` Will Deacon
2014-09-25 9:51 ` Geert Uytterhoeven
2014-09-25 10:33 ` Will Deacon
2014-09-24 17:17 ` [PATCH v3 10/17] mn10300: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 11/17] parisc: " Will Deacon
2014-09-25 20:00 ` Helge Deller
2014-09-24 17:17 ` [PATCH v3 12/17] powerpc: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 13/17] sparc: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 14/17] tile: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 15/17] x86: " Will Deacon
2014-09-24 17:17 ` [PATCH v3 16/17] documentation: memory-barriers: clarify relaxed io accessor semantics Will Deacon
2014-09-24 17:17 ` [PATCH v3 17/17] asm-generic: io: define relaxed accessor macros unconditionally Will Deacon
2014-09-25 10:42 ` [PATCH v3 00/17] Cross-architecture definitions of relaxed MMIO accessors Arnd Bergmann
2014-09-25 13:15 ` Arnd Bergmann
2014-09-25 14:55 ` Will Deacon
2014-09-25 15:07 ` Arnd Bergmann
2014-09-25 15:15 ` Arnd Bergmann
2014-09-25 15:24 ` Daniel Thompson
2014-09-25 19:17 ` Arnd Bergmann
2014-09-25 20:17 ` Geert Uytterhoeven
2014-09-26 8:40 ` Russell King - ARM Linux
2014-09-26 9:28 ` Arnd Bergmann
2014-09-26 8:05 ` Thierry Reding
2014-09-26 13:39 ` Arnd Bergmann
2014-09-26 13:46 ` Russell King - ARM Linux
2014-09-26 21:36 ` Arnd Bergmann
2014-09-29 8:23 ` Thierry Reding
2014-09-29 9:50 ` Arnd Bergmann
2014-10-01 15:23 ` Thierry Reding
2014-10-01 18:34 ` Arnd Bergmann
2014-09-29 9:25 ` Will Deacon
2014-09-29 9:48 ` Arnd Bergmann
2014-10-30 16:59 ` Will Deacon
2014-10-30 20:04 ` Arnd Bergmann
2014-10-31 11:09 ` Thierry Reding
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