linux-kernel - Re: Userspace RCU 0.2.3

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Date:	Wed, 14 Oct 2009 17:02:25 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
Cc:	Josh Triplett <josh@...htriplett.org>,
	Jon Bernard <jbernard@...ian.org>,
	Jan Blunck <jblunck@...e.de>,
	Pierre Habouzit <madcoder@...ian.org>,
	Steven Munroe <munroesj@...ux.vnet.ibm.com>,
	Bert Wesarg <bert.wesarg@...glemail.com>,
	Pierre-Marc Fournier <pierre-marc.fournier@...ymtl.ca>,
	ltt-dev@...ts.casi.polymtl.ca, rp@...s.cs.pdx.edu,
	linux-kernel@...r.kernel.org
Subject: Re: Userspace RCU 0.2.3

On Wed, Oct 14, 2009 at 06:36:57PM -0400, Mathieu Desnoyers wrote:
> Hi,
> 
> I just released lib urcu 0.2.3, which is now using autotools. I also
> integrated automatic architecture detection for old 386 which lack
> cmpxchg (using a fall-back if necessary). I also use a lock; addl
> instead of mfence on x86-32 to support a larger variety of older Intel
> CPUs.

!!!

Is there anyone on these lists other than me who has actually used an
SMP 80386-based system?

Either way, much appreciated for old time's sake.  The things we used
to do to avoid the need for cmpxchg!  ;-)

							Thanx, Paul

> The build system detects if NR_futex is available in the system
> headers. It falls back on a more portable alternative if they are not
> available.
> 
> There are also new configuration modes to ./configure for UP-only
> systems.
> 
> As always, the tarballs are available at http://www.lttng.org/urcu
> 
> Mathieu
> 
> -- 
> Mathieu Desnoyers
> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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