linux-kernel - Re: [Intel-gfx] linux-next: manual merge of the tip tree with the drm-intel tree

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Message-ID: <20161108171106.ugkcetcv3auvx7cz@phenom.ffwll.local>
Date:   Tue, 8 Nov 2016 18:11:06 +0100
From:   Daniel Vetter <daniel@...ll.ch>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
        Intel Graphics <intel-gfx@...ts.freedesktop.org>,
        DRI <dri-devel@...ts.freedesktop.org>,
        linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rob Clark <robdclark@...il.com>
Subject: Re: [Intel-gfx] linux-next: manual merge of the tip tree with the
 drm-intel tree

On Tue, Nov 08, 2016 at 06:04:15PM +0100, Peter Zijlstra wrote:
> On Tue, Nov 08, 2016 at 05:09:16PM +0100, Daniel Vetter wrote:
> > > Now, I know you're working on getting rid of this entirely for i915, but
> > > what about that MSM driver? Will we continue to need it there, is
> > > anybody actually maintaining that thing?
> > 
> > Rob Clark is, and since he's a one-man gpu driver team with other
> > responsibilities it might take even longer than for i915 :(
> 
> Fair enough. For my information, how much a of copy/paste job from i915
> was that? Could he, in principle, copy/paste your changes to get rid of
> this back into MSM without too much effort, or have things diverged
> greatly since the initial copy/paste?

Probably diverged too much already, and on top the big part is the command
submission, and that's entirely driver/hw specific. But etnaviv is a plain
gem driver which uses per-bo locking, and there's all the ttm drivers with
similar designs, so there's plenty of templates. But it's not just
copypasta for sure.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch