linux-kernel - Re: [PATCH] riscv: atomic: Using ARCH

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Message-ID: <CAJF2gTT7ft8xNkQcAef1XFuWsVdNHcoGMZt-mWFmk47fKh0ecg@mail.gmail.com>
Date:   Thu, 15 Apr 2021 21:15:32 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Anup Patel <Anup.Patel@....com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-csky@...r.kernel.org,
        linux-arch <linux-arch@...r.kernel.org>,
        Guo Ren <guoren@...ux.alibaba.com>,
        Arnd Bergmann <arnd@...db.de>,
        Anup Patel <anup@...infault.org>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: Re: [PATCH] riscv: atomic: Using ARCH_ATOMIC in asm/atomic.h

Sorry, forgot riscv32. I would fix that.

On Thu, Apr 15, 2021 at 4:52 PM Peter Zijlstra <peterz@...radead.org> wrote:
>
> On Thu, Apr 15, 2021 at 07:39:22AM +0000, guoren@...nel.org wrote:
> >  - Add atomic_andnot_* operation
>
> > @@ -76,6 +59,12 @@ ATOMIC_OPS(sub, add, -i)
> >  ATOMIC_OPS(and, and,  i)
> >  ATOMIC_OPS( or,  or,  i)
> >  ATOMIC_OPS(xor, xor,  i)
> > +ATOMIC_OPS(andnot, and,  -i)
>
> ~i, surely.



-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/