linux-kernel - Re: implementing Futex

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Message-Id: <200908141344.50639.arnd@arndb.de>
Date:	Fri, 14 Aug 2009 13:44:50 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Michael Schnell <mschnell@...ino.de>
Cc:	linux-kernel@...r.kernel.org,
	Mike Frysinger <vapier.adi@...il.com>,
	Paul Mundt <lethal@...ux-sh.org>
Subject: Re: implementing Futex

On Friday 14 August 2009, Michael Schnell wrote:
> Does that mean that both in fact do run in the same mode (I suppose
> Kernel Mode and thus the CPU's "System Mode" rather than the CPU's "User
> Mode".

yes

> With that - and supposing that as of Kernel 2.6.31 the sh code I see in
> Kernel 2.6.30 is used in /asm/generic, I would be able to just use the
> "generic" case for "implementing" a working Futex syscall for the NIOS).

Well, I haven't put that code into asm-generic/futex.h yet and it's
too late for 2.6.31, but it should get there eventually, if one of us
four submits a tested patch ;-).

In the meantime, I suggest you use a plain copy of the sh version.

	Arnd <><
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