linux-kernel - Re: [announce] "kill the Big Kernel Lock (BKL)" tree

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Message-ID: <18476.20788.142218.370584@stoffel.org>
Date:	Thu, 15 May 2008 11:05:24 -0400
From:	"John Stoffel" <john@...ffel.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jonathan Corbet <corbet@....net>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Alexander Viro <viro@....linux.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [announce] "kill the Big Kernel Lock (BKL)" tree

>>>>> "Andi" == Andi Kleen <andi@...stfloor.org> writes:

Andi> Linus Torvalds wrote:
>> 
>> On Thu, 15 May 2008, Andi Kleen wrote:
>>> The goal less being to get rid of BKL in old drivers, but not 
>>> requiring BKL in new drivers. Basically all BKL assumptions
>>> in interfaces really should go.
>> 
>> No, we really do want to get rid of BKL in old drivers too. Or at least in 
>> the interfaces.

Andi> In the interfaces definitely yes and all subsystems should have
Andi> their own lock_kernel calls, but why in the old drivers? For
Andi> those it's very unlikely they are used on any SMP system anyways
Andi> (e.g. anything depending on CONFIG_ISA) or if they do only on 2
Andi> CPU systems.

I'm still running an SMP server with ISA slots.  I'd love to
contribute testing and possibly coding to this effort, but
realisticlly I'll be able to compile and boot stuff.

John
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