linux-kernel - Re: [PATCH 31/33] locking/atomic: xtensa: move to ARCH

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Message-ID: <CAMo8BfLg8G7_Tn4R7oZkO7+wwMDC5Bz_7E7v_EGxJLX7F_M+5Q@mail.gmail.com>
Date:   Mon, 10 May 2021 07:19:35 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     LKML <linux-kernel@...r.kernel.org>, Will Deacon <will@...nel.org>,
        boqun.feng@...il.com, Peter Zijlstra <peterz@...radead.org>,
        aou@...s.berkeley.edu, Arnd Bergmann <arnd@...db.de>,
        bcain@...eaurora.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Chris Zankel <chris@...kel.net>, Rich Felker <dalias@...c.org>,
        "David S. Miller" <davem@...emloft.net>, deanbo422@...il.com,
        Helge Deller <deller@....de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greentime Hu <green.hu@...il.com>, Guo Ren <guoren@...nel.org>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Jonas Bonn <jonas@...thpole.se>, ley.foon.tan@...el.com,
        Russell King <linux@...linux.org.uk>,
        Matt Turner <mattst88@...il.com>,
        Michal Simek <monstr@...str.eu>,
        Michael Ellerman <mpe@...erman.id.au>, nickhu@...estech.com,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Mackerras <paulus@...ba.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Richard Henderson <rth@...ddle.net>,
        Stafford Horne <shorne@...il.com>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Vineet Gupta <vgupta@...opsys.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>
Subject: Re: [PATCH 31/33] locking/atomic: xtensa: move to ARCH_ATOMIC

On Mon, May 10, 2021 at 2:44 AM Mark Rutland <mark.rutland@....com> wrote:
>
> We'd like all architectures to convert to ARCH_ATOMIC, as once all
> architectures are converted it will be possible to make significant
> cleanups to the atomics headers, and this will make it much easier to
> generically enable atomic functionality (e.g. debug logic in the
> instrumented wrappers).
>
> As a step towards that, this patch migrates xtensa to ARCH_ATOMIC. The
> arch code provides arch_{atomic,atomic64,xchg,cmpxchg}*(), and common
> code wraps these with optional instrumentation to provide the regular
> functions.
>
> Signed-off-by: Mark Rutland <mark.rutland@....com>
> Cc: Boqun Feng <boqun.feng@...il.com>
> Cc: Chris Zankel <chris@...kel.net>
> Cc: Max Filippov <jcmvbkbc@...il.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Will Deacon <will@...nel.org>
> ---
>  arch/xtensa/Kconfig               |  1 +
>  arch/xtensa/include/asm/atomic.h  | 26 +++++++++++++-------------
>  arch/xtensa/include/asm/cmpxchg.h | 10 +++++-----
>  3 files changed, 19 insertions(+), 18 deletions(-)

Acked-by: Max Filippov <jcmvbkbc@...il.com>

-- 
Thanks.
-- Max