From: Parag Warudkar <parag.warudkar@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [rfc][patch] queued spinlocks (i386)
Date: Fri, 23 Mar 2007 16:48:56 +0000 (UTC) [thread overview]
Message-ID: <loom.20070323T174227-697@post.gmane.org> (raw)
In-Reply-To: 20070323101042.GD11577@wotan.suse.de
Nick Piggin <npiggin <at> suse.de> writes:
>
> On Fri, Mar 23, 2007 at 11:04:18AM +0100, Ingo Molnar wrote:
> >
> > * Nick Piggin <npiggin <at> suse.de> wrote:
> >
> > > Implement queued spinlocks for i386. [...]
> >
> > isnt this patented by MS? (which might not worry you SuSE/Novell guys,
> > but it might be a worry for the rest of the world
>
> I never thought a FIFO queue would be patentable.
>
> Do you have a reference to the patent number?
>
The ReactOS guys none the less, seem to have implemented queued spin locks -
http://www.reactos.org/en/newsletter_10.html (see the HAL section.)
Now I haven't looked at the code to see if they are different from what MS has
patented but given that it's a clone of Windows, one would think at least from
the behavioral pov they are similar?
Parag
next prev parent reply other threads:[~2007-03-23 16:49 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-23 8:59 [rfc][patch] queued spinlocks (i386) Nick Piggin
2007-03-23 9:40 ` Eric Dumazet
2007-03-23 9:59 ` Nick Piggin
2007-03-23 19:27 ` Ravikiran G Thirumalai
2007-03-23 10:04 ` Ingo Molnar
2007-03-23 10:10 ` Nick Piggin
2007-03-23 16:48 ` Parag Warudkar [this message]
2007-03-23 18:15 ` Davide Libenzi
2007-03-23 10:32 ` Nick Piggin
2007-03-23 10:40 ` Eric Dumazet
2007-03-23 11:02 ` William Lee Irwin III
2007-03-24 15:55 ` Nikita Danilov
2007-03-24 17:29 ` Ingo Molnar
2007-03-24 18:49 ` Nikita Danilov
2007-03-28 6:43 ` Nick Piggin
2007-03-28 19:26 ` Davide Libenzi
2007-03-28 22:00 ` Davide Libenzi
2007-03-29 1:36 ` Nick Piggin
2007-03-29 7:16 ` Nick Piggin
2007-03-30 0:27 ` Davide Libenzi
2007-03-30 1:59 ` Nick Piggin
2007-03-30 2:43 ` Davide Libenzi
2007-03-29 1:24 ` Nick Piggin
2007-03-24 21:41 ` Andrew Morton
2007-03-28 6:56 ` Nick Piggin
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