From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Ellerman <mpe@ellerman.id.au>
Subject: Re: [PATCH 1/3] futex: remove duplicated code
Date: Sat, 04 Mar 2017 23:49:44 +1100
Message-ID: <877f45cil2.fsf@concordia.ellerman.id.au>
References: <20170303122712.13353-1-jslaby@suse.cz>
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Cc: linux-kernel@vger.kernel.org, Jiri Slaby <jslaby@suse.cz>,
        Richard Henderson <rth@twiddle.net>,
        Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
        Matt Turner <mattst88@gmail.com>,
        Vineet Gupta <vgupta@synopsys.com>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        Richard Kuo <rkuo@codeaurora.org>,
        Tony Luck <tony.luck@intel.com>,
        Fenghua Yu <fenghua.yu@intel.com>,
        Michal Simek <monstr@monstr.eu>,
        Ralf Baechle <ralf@linux-mips.org>,
        Jonas Bonn <jonas@southpole.se>,
        Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
        Stafford Horne <shorne@gmail.com>,
        "James E.J. Bottomley" <jejb@parisc-linux.org>,
        Helge Deller <deller@gmx.de>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
To: Jiri Slaby <jslaby@suse.cz>, akpm@linux-foundation.org
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Jiri Slaby <jslaby@suse.cz> writes:

> There is code duplicated over all architecture's headers for
> futex_atomic_op_inuser. Namely op decoding, access_ok check for uaddr,
> and comparison of the result.
>
> Remove this duplication and leave up to the arches only the needed
> assembly which is now in arch_futex_atomic_op_inuser.

Looks OK and boots on powerpc. But I don't think anything's actually
calling those futex ops. Is there a test suite I should run?

Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

cheers