linux-kernel - Re: implementing Futex

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Message-ID: <8bd0f97a0908170157m71e4ffafna9e1afbb214655cc@mail.gmail.com>
Date:	Mon, 17 Aug 2009 04:57:53 -0400
From:	Mike Frysinger <vapier.adi@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Michael Schnell <mschnell@...ino.de>, linux-kernel@...r.kernel.org,
	Paul Mundt <lethal@...ux-sh.org>
Subject: Re: implementing Futex

On Fri, Aug 14, 2009 at 07:44, Arnd Bergmann wrote:
> 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 ;-).

well, that thread stalled because i posted a question wrt spinlock/irq
usage and didnt get a response ...
-mike
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