From: Peter Zijlstra <peterz@infradead.org>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Cc: rth@twiddle.net, vgupta@synopsys.com, linux@arm.linux.org.uk,
will.deacon@arm.com, hskinnemoen@gmail.com, realmz6@gmail.com,
dhowells@redhat.com, rkuo@codeaurora.org, tony.luck@intel.com,
geert@linux-m68k.org, james.hogan@imgtec.com,
ralf@linux-mips.org, jejb@parisc-linux.org,
benh@kernel.crashing.org, heiko.carstens@de.ibm.com,
davem@davemloft.net, cmetcalf@ezchip.com, mingo@kernel.org
Subject: Re: [RFC][PATCH 03/24] arm: Provide atomic_{or,xor,and}
Date: Thu, 9 Jul 2015 20:02:23 +0200 [thread overview]
Message-ID: <20150709180223.GF3644@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20150709175308.296642297@infradead.org>
On Thu, Jul 09, 2015 at 07:28:58PM +0200, Peter Zijlstra wrote:
> Implement atomic logic ops -- atomic_{or,xor,and}.
>
> These will replace the atomic_{set,clear}_mask functions that are
> available on some archs.
>
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> arch/arm/include/asm/atomic.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> --- a/arch/arm/include/asm/atomic.h
> +++ b/arch/arm/include/asm/atomic.h
> @@ -193,6 +193,9 @@ static inline int __atomic_add_unless(at
>
> ATOMIC_OPS(add, +=, add)
> ATOMIC_OPS(sub, -=, sub)
> +ATOMIC_OP(and, &=, and)
> +ATOMIC_OP(or, |=, orr)
> +ATOMIC_OP(xor, ^=, eor)
>
> #undef ATOMIC_OPS
> #undef ATOMIC_OP_RETURN
> @@ -320,6 +323,9 @@ static inline long long atomic64_##op##_
>
> ATOMIC64_OPS(add, adds, adc)
> ATOMIC64_OPS(sub, subs, sbc)
> +ATOMIC64_OP(and, and, and)
> +ATOMIC64_OP(or, or, or)
Hmm, reading through them, this should be:
ATOMIC64_OP(or, orr, orr)
I suppose, not sure why the compiler didn't complain, maybe because
there aren't any users..
> +ATOMIC64_OP(xor, eor, eor)
>
> #undef ATOMIC64_OPS
> #undef ATOMIC64_OP_RETURN
>
>
next prev parent reply other threads:[~2015-07-09 18:02 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 17:28 [RFC][PATCH 00/24] arch: Provide atomic logic ops Peter Zijlstra
2015-07-09 17:28 ` [RFC][PATCH 01/24] alpha: Provide atomic_{or,xor,and} Peter Zijlstra
2015-07-09 17:28 ` [RFC][PATCH 02/24] arc: " Peter Zijlstra
2015-07-10 4:30 ` Vineet Gupta
2015-07-10 7:05 ` Peter Zijlstra
2015-07-13 12:43 ` Vineet Gupta
2015-07-09 17:28 ` [RFC][PATCH 03/24] arm: " Peter Zijlstra
2015-07-09 18:02 ` Peter Zijlstra [this message]
2015-07-10 10:24 ` Russell King - ARM Linux
2015-07-09 17:28 ` [RFC][PATCH 04/24] arm64: " Peter Zijlstra
2015-07-10 8:42 ` Will Deacon
2015-07-10 16:23 ` Peter Zijlstra
2015-07-13 9:29 ` Will Deacon
2015-07-15 16:01 ` Will Deacon
2015-07-15 16:46 ` Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 05/24] avr32: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 06/24] blackfin: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 07/24] hexagon: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 08/24] ia64: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 09/24] m32r: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 10/24] m68k: " Peter Zijlstra
2015-07-10 9:13 ` Geert Uytterhoeven
2015-07-09 17:29 ` [RFC][PATCH 11/24] metag: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 12/24] mips: " Peter Zijlstra
2015-07-09 18:45 ` Ralf Baechle
2015-07-09 17:29 ` [RFC][PATCH 13/24] mn10300: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 14/24] parisc: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 15/24] powerpc: " Peter Zijlstra
2015-07-09 21:49 ` Benjamin Herrenschmidt
2015-07-09 17:29 ` [RFC][PATCH 16/24] sh: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 17/24] sparc: " Peter Zijlstra
2015-07-09 18:05 ` David Miller
2015-07-09 17:29 ` [RFC][PATCH 18/24] xtensa: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 19/24] s390: " Peter Zijlstra
2015-07-10 7:17 ` Heiko Carstens
2015-07-10 10:22 ` Peter Zijlstra
2015-07-10 10:52 ` Heiko Carstens
2015-07-10 11:28 ` Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 20/24] x86: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 21/24] atomic: " Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 22/24] frv: Rewrite atomic implementation Peter Zijlstra
2015-07-09 17:29 ` [RFC][PATCH 23/24] atomic: Collapse all atomic_{set,clear}_mask definitions Peter Zijlstra
2015-07-10 9:10 ` Geert Uytterhoeven
2015-07-10 9:13 ` Vineet Gupta
2015-07-10 10:39 ` Peter Zijlstra
2015-07-10 13:34 ` Chris Metcalf
2015-07-10 13:42 ` Russell King - ARM Linux
2015-07-10 16:27 ` Peter Zijlstra
2015-07-10 17:35 ` Chris Metcalf
2015-07-10 19:45 ` Chris Metcalf
2015-07-09 17:29 ` [RFC][PATCH 24/24] atomic: Replace atomic_{set,clear}_mask() usage Peter Zijlstra
2015-07-09 20:38 ` [PATCH] tile: Provide atomic_{or,xor,and} Chris Metcalf
2015-07-09 20:49 ` Peter Zijlstra
2015-07-27 12:17 ` [tip:locking/arch-atomic] " tip-bot for Chris Metcalf
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