linux-kernel - Re: [PATCH] fence: Use smp_mb__before

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Message-ID: <20140605155200.GC23993@kroah.com>
Date:	Thu, 5 Jun 2014 08:52:00 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Maarten Lankhorst <maarten.lankhorst@...onical.com>
Cc:	Rob Clark <robdclark@...il.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fence: Use smp_mb__before_atomic()

On Thu, Jun 05, 2014 at 02:00:16PM +0200, Maarten Lankhorst wrote:
> >I don't think the question about whether we need something like fence
> >to augment dma-buf is really in doubt.  Maybe it should live somewhere
> >else, I'm not sure.  But it makes sense for it to live wherever
> >dma-buf does, as they are intended to work together.
> >
> Additionally we already have a user for this in the kernel: the GPU
> drivers that use TTM.

What about the sync code in the android directory?  I thought that was
supposed to be what GPU drivers were going to use for this type of
thing.

thanks,

greg k-h
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