linux-kernel - Re: [PATCH 00/28] arch: Provide atomic logic ops

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Date:	Tue, 21 Jul 2015 16:13:14 -0500
From:	rkuo <rkuo@...eaurora.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	rth@...ddle.net, vgupta@...opsys.com, linux@....linux.org.uk,
	will.deacon@....com, hskinnemoen@...il.com, realmz6@...il.com,
	dhowells@...hat.com, tony.luck@...el.com, geert@...ux-m68k.org,
	james.hogan@...tec.com, ralf@...ux-mips.org, jejb@...isc-linux.org,
	benh@...nel.crashing.org, heiko.carstens@...ibm.com,
	davem@...emloft.net, cmetcalf@...hip.com,
	ysato@...rs.sourceforge.jp, mingo@...nel.org
Subject: Re: [PATCH 00/28] arch: Provide atomic logic ops

On Thu, Jul 16, 2015 at 07:21:10PM +0200, Peter Zijlstra wrote:
> Currently there is an incoherent mess of atomic_{set,clear}_mask() and
> atomic_or() (but no atomic_{and,nand,xor}()) in the tree.
> 
> Those archs that implement atomic_{set,clear}_mask() are not even consistent on
> its signature.
> 
> Implement atomic_{or,and,xor}() on all archs and deprecate
> atomic_{set,clear}_mask().
> 
> The series has been compile tested by the build-bot, no known failures at this time.
> 
> I would like to take this through tip; I'll ask Ingo to put it in a separate
> branch such that people can pull in that branch if there is conflicting work
> elsewhere (Will has some for Argh64).
> 
> 
> Changes since lst time:
> 
>  - Quite a few build fails fixed, most notable would be that each arch
>    now defines CONFIG_ARCH_HAS_ATOMIC_OR for a little while -- we take it
>    out again later.
> 
>  - FRV has some extra magic that allows the inline assembly to correctly
>    work as inline functions.
> 
>  - TILE patch contributed by Chris -- Thanks!
> 
>  - A little extention to lib/atomic64_test.c that compile tests the new
>    primitives.
> 
>  - Alpha, fixed ASM due to fallout from actually trying to compile things.
> 
>  - H8300, somehow I had overlooked it previously.
> 
>  - Added atomic_andnot() to a few archs that have that instruction to test that.
> 

Hexagon parts built and tested fine; thanks!

Acked-by: Richard Kuo <rkuo@...eaurora.org>


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