linux-kernel - Re: [RFC PATCH 0/7] priority-boost urcu

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Date:	Thu, 18 Aug 2011 09:30:25 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Lai Jiangshan <laijs@...fujitsu.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	ltt-dev@...ts.casi.polymtl.ca, rp@...s.cs.pdx.edu,
	Darren Hart <darren@...art.com>, Ingo Molnar <mingo@...e.hu>,
	tglx@...utronix.de, Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/7] priority-boost urcu

[ not sure who wrote this but...]

> > > What we should introduce is abstractions over futexes.  This is what
> > > I did to experimentally port URCU to QEMU---my secret goal since
> > > commit 806f811 (use kernel style makefile output, 2010-03-01). :)
> > > Our use of futexes is exceptionally similar to a Windows
> > > manual-reset event (yes, Windows:
> > > http://msdn.microsoft.com/en-us/library/system.threading.manualresetevent%28v=vs.80%29.aspx).
> > > In QEMU I added the manual-reset event and use it in the
> > > implementation of RCU.

Be careful with this. You better make sure that Microsoft does not hold
any patents to this method, otherwise all your work will be in vain.

-- Steve


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