linux-kernel - Re: Moving Userspace RCU (urcu) from GPL to LGPL license

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Message-ID: <20090218213448.3b467c88@the-village.bc.nu>
Date:	Wed, 18 Feb 2009 21:34:48 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
Cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, ltt-dev@...ts.casi.polymtl.ca,
	pierre-marc.fournier@...ymtl.ca
Subject: Re: Moving Userspace RCU (urcu) from GPL to LGPL license

On Wed, 18 Feb 2009 13:02:32 -0500
Mathieu Desnoyers <compudj@...stal.dyndns.org> wrote:
> only thing is that we cannot put GPL code into a LGPL library.

You'll need a patent grant from IBM for non GPL use for that not just an
LGPL library
 
> The other point is that I use a few low-level primitives from the Linux
> kernel header (e.g. atomic increment for x86, barrier macros). Those are
> simple one-liners, but, still, I wonder about the licensing
> implications. I could simply "rewrite" them, but that would be a shame

Ask the author - certainly the original basic atomic ops Linus gave
specific permission to the mozilla folks to use under other licences.

Alan
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