Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37;
Message-ID: <94eb50973fb770586496d2a791b9980a105d7429.camel@physik.fu-berlin.de>
Subject: Re: [PATCH] locking/atomic: sh: Use generic_cmpxchg_local for
 arch_cmpxchg_local()
From:   John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To:     "Masami Hiramatsu (Google)" <mhiramat@kernel.org>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        Rich Felker <dalias@libc.org>
Cc:     "wuqiang . matt" <wuqiang.matt@bytedance.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Peter Zijlstra <peterz@infradead.org>,
        linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-trace-kernel@vger.kernel.org
Date:   Tue, 24 Oct 2023 18:43:06 +0200
In-Reply-To: <169815917362.8695.13904684741526725648.stgit@devnote2>
References: <169815917362.8695.13904684741526725648.stgit@devnote2>
Autocrypt: addr=glaubitz@physik.fu-berlin.de; prefer-encrypt=mutual;
 keydata=mQINBE3JE9wBEADMrYGNfz3oz6XLw9XcWvuIxIlPWoTyw9BxTicfGAv0d87wngs9U+d52t/REggPePf34gb7/k8FBY1IgyxnZEB5NxUb1WtW0M3GUxpPx6gBZqOm7SK1ZW3oSORw+T7Aezl3Zq4Nr4Nptqx7fnLpXfRDs5iYO/GX8WuL8fkGS/gIXtxKewd0LkTlb6jq9KKq8qn8/BN5YEKqJlM7jsENyA5PIe2npN3MjEg6p+qFrmrzJRuFjjdf5vvGfzskrXCAKGlNjMMA4TgZvugOFmBI/iSyV0IOaj0uKhes0ZNX+lQFrOB4j6I5fTBy7L/T3W/pCWo3wVkknNYa8TDYT73oIZ7Aimv+k7OzRfnxsSOAZT8Re1Yt8mvzr6FHVFjr/VdyTtO5JgQZ6LEmvo4Ro+2ByBmCHORCQ0NJhD1U3avjGfvfslG999W0WEZLTeaGkBAN1yG/1bgGAytQQkD9NsVXqBy7S3LVv9bB844ysW5Aj1nvtgIz14E2WL8rbpfjJMXi7B5ha6Lxf3rFOgxpr6ZoEn+bGG4hmrO+/ReA4SerfMqwSTnjZsZvxMJsx2B9c8DaZE8GsA4I6lsihbJmXhw8i7Cta8Dx418wtEbXhL6m/UEk60O7QD1VBgGqDMnJDFSlvKa9D+tZde/kHSNmQmLLzxtDbNgBgmR0jUlmxirijnm8bwARAQABtEBKb2huIFBhdWwgQWRyaWFuIEdsYXViaXR6IChEZWJpYW4gUHJvamVjdCkgPGdsYXViaXR6QGRlYmlhbi5vcmc+iQI3BBMBCAAhBQJRnmPwAhsDBQsJCAcDBRUKCQgLBRYCAwEAAh4BAheAAAoJEHQmOzf1tfkTF0gQAJgvGiKf5YW6+Qyss1qGwf+KHXb/6gIThY6GpSIro9vL/UxaakRCOloaXXAs3KpgBULOO8+prqU8GIqcd8tE3YvQFvvO3rN+8bhOiiD0lFmQSEHcpCW5ZRpdh
        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
 8+xDVoX
        +kjv6EHJrwVupOpMa39cGs2rKYZbWTazcflKH+bXG3FHBrwh9XRjA6A1CTeC/zTVNgGF6wvw/qT2x9tS7WeeZ1jvBCJub2cb07qIfuvxXiGcYGr+W4z9GuLCiWsMmoff/Gmo1aeMZDRYKLAZLGlEr6zkYh1Abtiz0YLqIYVbZAnf8dCjmYhuwPq77IeqSjqUqI2Cb0oOOlwRKVWDlqAeo0Bh8DrvZvBAojJf4HnQZ/pSz0yaRed/0FAmkVfV+1yR6BtRXhkRF6NCmguSITC96IzE26C6n5DBb43MR7Ga/mof4MUufnKADNG4qz57CBwENHyx6ftWJeWZNdRZq10o0NXuCJZf/iulHCWS/hFOM5ygfONq1Vsj2ZDSWvVpSLj+Ufd2QnmsnrCr1ZGcl72OC24AmqFWJY+IyReHWpuABEVZVeVDQooJ0K4yqucmrFR7HyH7oZGgR0CgYHCI+9yhrXHrQpyLQ/Sm9obiBQYXVsIEFkcmlhbiBHbGF1Yml0eiAoU1VTRSBMSU5VWCBHbWJIKSA8Z2xhdWJpdHpAc3VzZS5jb20+iQJOBBMBCAA4FiEEYv+KdYTgKVaVRgAGdCY7N/W1+RMFAloSyhICGwMFCwkIBwMFFQoJCAsFFgIDAQACHgECF4AACgkQdCY7N/W1+ROnkQ//X6LVYXPi1D8/XFsoi0HDCvZhbWSzcGw6MQZKmTk42mNFKm/OrYBJ9d1St4Q3nRwH/ELzGb8liA02d4Ul+DV1Sv3P540LzZ4mmCi9wV+4Ohn6cXfaJNaTmHy1dFvg1NrVjMqGAFZkhTXRAvjRIQItyRvL//gKaciyKB/T0C3CIzbuTLBqtZMIIuP5nIgkwBvdw6H7EQ7kqOAO85S4FDSum/cLwLzdKygyvmPNOOtxvxa9QIryLf6h7HfWg68DvGDqIV9ZBoi8JjYZrZzaBmlPV8Iwm52uYnzsKM/LoyZ0G4v2u/WEtQEl7deLJjKby3kK
 mZGh9hQ
        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
 ZDjDp9D
        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
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8BIT
User-Agent: Evolution 3.50.0 
MIME-Version: 1.0
Precedence: bulk

On Tue, 2023-10-24 at 23:52 +0900, Masami Hiramatsu (Google) wrote:
> From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> 
> Use generic_cmpxchg_local() for arch_cmpxchg_local() implementation
> in SH architecture because it does not implement arch_cmpxchg_local().
> 
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202310241310.Ir5uukOG-lkp@intel.com/
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> ---
>  arch/sh/include/asm/cmpxchg.h |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/sh/include/asm/cmpxchg.h b/arch/sh/include/asm/cmpxchg.h
> index 288f6f38d98f..e920e61fb817 100644
> --- a/arch/sh/include/asm/cmpxchg.h
> +++ b/arch/sh/include/asm/cmpxchg.h
> @@ -71,4 +71,6 @@ static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
>  				    (unsigned long)_n_, sizeof(*(ptr))); \
>    })
>  
> +#include <asm-generic/cmpxchg-local.h>
> +
>  #endif /* __ASM_SH_CMPXCHG_H */

Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913