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From:   Max Filippov <jcmvbkbc@gmail.com>
Date:   Mon, 10 May 2021 07:19:35 -0700
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Subject: Re: [PATCH 31/33] locking/atomic: xtensa: move to ARCH_ATOMIC
To:     Mark Rutland <mark.rutland@arm.com>
Cc:     LKML <linux-kernel@vger.kernel.org>, Will Deacon <will@kernel.org>,
        boqun.feng@gmail.com, Peter Zijlstra <peterz@infradead.org>,
        aou@eecs.berkeley.edu, Arnd Bergmann <arnd@arndb.de>,
        bcain@codeaurora.org,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Chris Zankel <chris@zankel.net>, Rich Felker <dalias@libc.org>,
        "David S. Miller" <davem@davemloft.net>, deanbo422@gmail.com,
        Helge Deller <deller@gmx.de>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Greentime Hu <green.hu@gmail.com>, Guo Ren <guoren@kernel.org>,
        Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
        "James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
        Jonas Bonn <jonas@southpole.se>, ley.foon.tan@intel.com,
        Russell King <linux@armlinux.org.uk>,
        Matt Turner <mattst88@gmail.com>,
        Michal Simek <monstr@monstr.eu>,
        Michael Ellerman <mpe@ellerman.id.au>, nickhu@andestech.com,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Mackerras <paulus@samba.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Richard Henderson <rth@twiddle.net>,
        Stafford Horne <shorne@gmail.com>,
        Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Vineet Gupta <vgupta@synopsys.com>,
        Yoshinori Sato <ysato@users.sourceforge.jp>
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On Mon, May 10, 2021 at 2:44 AM Mark Rutland <mark.rutland@arm.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@arm.com>
> Cc: Boqun Feng <boqun.feng@gmail.com>
> Cc: Chris Zankel <chris@zankel.net>
> Cc: Max Filippov <jcmvbkbc@gmail.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Will Deacon <will@kernel.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@gmail.com>

-- 
Thanks.
-- Max