linux-kernel - Re: [PATCH] unicore32 fix: remove arch-specific futex support

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Message-Id: <201104011109.23966.arnd@arndb.de>
Date:	Fri, 1 Apr 2011 11:09:23 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	"Guan Xuetao" <gxt@...c.pku.edu.cn>
Cc:	"'Thomas Gleixner'" <tglx@...utronix.de>,
	"'Paul Mundt'" <lethal@...ux-sh.org>, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH] unicore32 fix: remove arch-specific futex support

On Thursday 31 March 2011, Guan Xuetao wrote:
> For cmpxchg, we have both system call and kuser_cmpxchg supports in old abi
> which are similar to arm.
> The performance of system call version is too poor,  so it could be only used for test.
> 

Let's forget about doing futex support for unicore32 then and use your original
patch.

Acked-by: Arnd Bergmann <arnd@...db.de>
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