linux-kernel - Re: [PATCH memory-barriers.txt 7/7] Documentation,barriers: Mention smp_cond

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Message-ID: <20160413141737.GA3614@linux.vnet.ibm.com>
Date:	Wed, 13 Apr 2016 07:17:38 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	jiangshanlai@...il.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, rostedt@...dmis.org,
	dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com,
	fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com,
	Davidlohr Bueso <dave@...olabs.net>,
	Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH memory-barriers.txt 7/7] Documentation,barriers: Mention
 smp_cond_acquire()

On Wed, Apr 13, 2016 at 02:53:10PM +0200, Peter Zijlstra wrote:
> On Tue, Apr 12, 2016 at 08:52:55AM -0700, Paul E. McKenney wrote:
> > From: Davidlohr Bueso <dave@...olabs.net>
> > 
> > ... do this next to smp_load_acquire when first mentioning
> > ACQUIRE. While this call is briefly explained and ctrl
> > dependencies are mentioned later, it does not hurt the reader.
> 
> Ha! just when I have a patch set in RFC to change the whole thing about
> :-)
> 
> lkml.kernel.org/r/20160404122250.340636238@...radead.org

Heh!  I was talking to a bunch of formal-verification researchers last
week, and the fact that requirements can change over time did not make
them feel comfortable.  ;-)

							Thanx, Paul