linux-kernel - Re: [RFC PATCH-tip v2 1/6] locking/osq: Make lock/unlock proper acquire/release barrier

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Message-ID: <20160615215918.GY30921@twins.programming.kicks-ass.net>
Date:	Wed, 15 Jun 2016 23:59:18 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Waiman Long <waiman.long@....com>
Cc:	Davidlohr Bueso <dave@...olabs.net>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org, linux-alpha@...r.kernel.org,
	linux-ia64@...r.kernel.org, linux-s390@...r.kernel.org,
	linux-arch@...r.kernel.org, Jason Low <jason.low2@...com>,
	Dave Chinner <david@...morbit.com>,
	Scott J Norton <scott.norton@....com>,
	Douglas Hatch <doug.hatch@....com>
Subject: Re: [RFC PATCH-tip v2 1/6] locking/osq: Make lock/unlock proper
 acquire/release barrier

On Wed, Jun 15, 2016 at 04:04:07PM -0400, Waiman Long wrote:
> 
> BTW, when will the smp_acquire__after_ctrl_dep() patch goes into the tip
> tree? My patch will have a dependency on that when I make the change.

Should already be in as part of that spin_unlock_wait() fixup.

/me checks..

tip/locking/core contains:

33ac279677dc ("locking/barriers: Introduce smp_acquire__after_ctrl_dep()")