From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 18/20] arm64: atomics: implement atomic{, 64}_cmpxchg using cmpxchg
Date: Fri, 24 Jul 2015 16:44:36 +0100 [thread overview]
Message-ID: <20150724154436.GS3550@e104818-lin.cambridge.arm.com> (raw)
In-Reply-To: <1437734531-10698-19-git-send-email-will.deacon@arm.com>
On Fri, Jul 24, 2015 at 11:42:09AM +0100, Will Deacon wrote:
> We don't need duplicate cmpxchg implementations, so use cmpxchg to
> implement atomic{,64}_cmpxchg, like we do for xchg already.
>
> Reviewed-by: Steve Capper <steve.capper@arm.com>
> Signed-off-by: Will Deacon <will.deacon@arm.com>
> ---
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
next prev parent reply other threads:[~2015-07-24 15:44 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 10:41 [PATCH v2 00/20] arm64: support for 8.1 LSE atomic instructions Will Deacon
2015-07-24 10:41 ` [PATCH v2 01/20] arm64: rwlocks: don't fail trylock purely due to contention Will Deacon
2015-07-24 11:14 ` Catalin Marinas
2015-07-24 10:41 ` [PATCH v2 02/20] documentation: Clarify failed cmpxchg memory ordering semantics Will Deacon
2015-07-24 11:15 ` Catalin Marinas
2015-07-27 11:58 ` Will Deacon
2015-07-27 12:02 ` Peter Zijlstra
2015-07-27 13:00 ` Will Deacon
2015-07-24 10:41 ` [PATCH v2 03/20] arm64: cpufeature.h: add missing #include of kernel.h Will Deacon
2015-07-24 11:15 ` Catalin Marinas
2015-07-24 10:41 ` [PATCH v2 04/20] arm64: atomics: move ll/sc atomics into separate header file Will Deacon
2015-07-24 11:19 ` Catalin Marinas
2015-07-24 10:41 ` [PATCH v2 05/20] arm64: elf: advertise 8.1 atomic instructions as new hwcap Will Deacon
2015-07-24 11:24 ` Catalin Marinas
2015-07-24 10:41 ` [PATCH v2 06/20] arm64: alternatives: add cpu feature for lse atomics Will Deacon
2015-07-24 11:26 ` Catalin Marinas
2015-07-24 10:41 ` [PATCH v2 07/20] arm64: introduce CONFIG_ARM64_LSE_ATOMICS as fallback to ll/sc atomics Will Deacon
2015-07-24 11:38 ` Catalin Marinas
2015-07-24 10:41 ` [PATCH v2 08/20] arm64: atomics: patch in lse instructions when supported by the CPU Will Deacon
2015-07-24 14:43 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 09/20] arm64: locks: " Will Deacon
2015-07-24 15:08 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 10/20] arm64: bitops: " Will Deacon
2015-07-24 15:19 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 11/20] arm64: xchg: " Will Deacon
2015-07-24 15:19 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 12/20] arm64: cmpxchg: " Will Deacon
2015-07-24 15:21 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 13/20] arm64: cmpxchg_dbl: " Will Deacon
2015-07-24 15:29 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 14/20] arm64: cmpxchg: avoid "cc" clobber in ll/sc routines Will Deacon
2015-07-24 15:30 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 15/20] arm64: cmpxchg: avoid memory barrier on comparison failure Will Deacon
2015-07-24 15:32 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 16/20] arm64: atomics: tidy up common atomic{,64}_* macros Will Deacon
2015-07-24 15:40 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 17/20] arm64: atomics: prefetch the destination word for write prior to stxr Will Deacon
2015-07-24 15:42 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 18/20] arm64: atomics: implement atomic{, 64}_cmpxchg using cmpxchg Will Deacon
2015-07-24 15:44 ` Catalin Marinas [this message]
2015-07-24 10:42 ` [PATCH v2 19/20] arm64: atomic64_dec_if_positive: fix incorrect branch condition Will Deacon
2015-07-24 15:45 ` Catalin Marinas
2015-07-24 10:42 ` [PATCH v2 20/20] arm64: kconfig: select HAVE_CMPXCHG_LOCAL Will Deacon
2015-07-24 15:45 ` Catalin Marinas
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