linux-kernel - Re: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it

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Message-ID: <20061206201703.GC3013@parisc-linux.org>
Date:	Wed, 6 Dec 2006 13:17:03 -0700
From:	Matthew Wilcox <matthew@....cx>
To:	Christoph Lameter <clameter@....com>
Cc:	Linus Torvalds <torvalds@...l.org>,
	Russell King <rmk+lkml@....linux.org.uk>,
	David Howells <dhowells@...hat.com>,
	Andrew Morton <akpm@...l.org>,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it

On Wed, Dec 06, 2006 at 12:11:01PM -0800, Christoph Lameter wrote:
> On Wed, 6 Dec 2006, Matthew Wilcox wrote:
> > Follow the thread back.  I'm talking about parisc.  Machines exist (are
> > still being sold) with up to 128 cores.  I think the largest we've
> > confirmed work are 8 CPUs.
> 
> And you only have an atomic get and clear atomic op? Amazing. Is this 
> really still in production?

Yes.  And yes.
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