linux-kernel - Re: [PATCH 2/9] RISC-V: Atomic and Locking Code

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Message-ID: <20170706072616.h2rs7seogejfbrod@hirez.programming.kicks-ass.net>
Date:   Thu, 6 Jul 2017 09:26:16 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     Palmer Dabbelt <palmer@...belt.com>, mingo@...hat.com,
        mcgrof@...nel.org, viro@...iv.linux.org.uk, sfr@...b.auug.org.au,
        nicolas.dichtel@...nd.com, rmk+kernel@...linux.org.uk,
        msalter@...hat.com, tklauser@...tanz.ch, will.deacon@....com,
        james.hogan@...tec.com, paul.gortmaker@...driver.com,
        linux@...ck-us.net, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, albert@...ive.com,
        patches@...ups.riscv.org
Subject: Re: [PATCH 2/9] RISC-V: Atomic and Locking Code

On Thu, Jul 06, 2017 at 07:08:33PM +0800, Boqun Feng wrote:
> On Wed, Jul 05, 2017 at 10:43:21AM +0200, Peter Zijlstra wrote:
> > On Tue, Jul 04, 2017 at 12:50:55PM -0700, Palmer Dabbelt wrote:
> > > +/*
> > > + * FIXME: I could only find documentation that atomic_{add,sub,inc,dec} are
> > > + * barrier-free.  I'm assuming that and/or/xor have the same constraints as the
> > > + * others.
> > > + */
> > 
> > Yes.. we have new documentation in the work to which I would post a link
> > but for some reason copy/paste stopped working again (Konsole does that
> > at times and is #$%#$%#4# annoying).
> > 
> > Ha, found it using google...
> > 
> >   https://marc.info/?l=linux-kernel&m=14972790112580
> > 
> 
> The link is broken, you miss a tailing 1 ;-)
> 
> 	https://marc.info/?l=linux-kernel&m=149727901125801
> 

Argh... thanks for fixing that!