linux-kernel - Re: [PATCH -v2 00/33] implement atomic_fetch

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Message-ID: <20160608143826.GN30909@twins.programming.kicks-ass.net>
Date:	Wed, 8 Jun 2016 16:38:26 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Vineet Gupta <vgupta@...opsys.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"will.deacon@....com" <will.deacon@....com>,
	"paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>,
	"boqun.feng@...il.com" <boqun.feng@...il.com>,
	"waiman.long@....com" <waiman.long@....com>,
	"fweisbec@...il.com" <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"rth@...ddle.net" <rth@...ddle.net>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"egtvedt@...fundet.no" <egtvedt@...fundet.no>,
	"realmz6@...il.com" <realmz6@...il.com>,
	"ysato@...rs.sourceforge.jp" <ysato@...rs.sourceforge.jp>,
	"rkuo@...eaurora.org" <rkuo@...eaurora.org>,
	"tony.luck@...el.com" <tony.luck@...el.com>,
	"geert@...ux-m68k.org" <geert@...ux-m68k.o>
Subject: Re: [PATCH -v2 00/33] implement atomic_fetch_$op

On Wed, Jun 08, 2016 at 07:54:31PM +0530, Vineet Gupta wrote:
> On Wednesday 08 June 2016 07:02 PM, Peter Zijlstra wrote:
> > On Wed, Jun 08, 2016 at 02:55:30PM +0200, Ingo Molnar wrote:
> > 
> >> I'd much prefer to have all of these in the locking tree (i.e. tip:locking/core), 
> >> to make it less painful all around.
> > 
> > All the fetch_op stuff, yes certainly. But Vineet wanted to munge
> > arch/arc/include/asm/atomic.h a bit in 4.7, which would make applying
> > the arc fetch_op patch tricky.
> > 
> 
> My patches are in linux-next already. I was hoping to squeeze in a different fix
> before sending the pull request to Linus. But I don't want to stall you, will do
> that first thing tomorrow morning. OK ?

Much thanks!