From: Daniel Vetter <daniel@ffwll.ch>
To: ville.syrjala@linux.intel.com
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 0/6] drm/i915: Avoid stuck page flip waiters on GPU reset
Date: Tue, 29 Jan 2013 17:40:57 +0100 [thread overview]
Message-ID: <20130129164057.GT14766@phenom.ffwll.local> (raw)
In-Reply-To: <20130129163946.GS14766@phenom.ffwll.local>
On Tue, Jan 29, 2013 at 05:39:46PM +0100, Daniel Vetter wrote:
> On Tue, Jan 29, 2013 at 06:13:32PM +0200, ville.syrjala@linux.intel.com wrote:
> > Someone mentioned on irc that intel_crtc_wait_for_pending_flips() was
> > getting stuck in some cases. This rang a bell since I was poking around
> > that stuff last year.
> >
> > The issue that I'm trying to fix here is processes getting stuck in D
> > state when a GPU reset happens while page flips have been scheduled.
> >
> > Testing is easy 1) fire up 'glxgears -fullscreen', run 'gem_hang 0',
> > try to VT switch. Without this series X and some kworker soon get stuck
> > in D state and you're left with a useless box. With the patch set, you
> > wait a while, the GPU hangcheck kicks in, and you get your console back.
>
> Broken record maintainer request: Can you please bake that into an i-g-t?
> I think (hope) that running one of the delayed flip tests vs. the hangman
> (gem_hang is a bit evil since it can kill boxes for real) should do the
> trick. Then maybe also run one of the wf-vblank tests vs. hangman to check
> that we cancel those correctly, too.
Actually for the case you're fixing here we probably need a delayed flip
vs. modeset (without flip event checks) against a simulated gpu hang.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
prev parent reply other threads:[~2013-01-29 16:38 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-29 16:13 [PATCH 0/6] drm/i915: Avoid stuck page flip waiters on GPU reset ville.syrjala
2013-01-29 16:13 ` [PATCH 1/6] drm/i915: Kill obj->pending_flip ville.syrjala
2013-02-13 10:16 ` Damien Lespiau
2013-02-13 16:13 ` Daniel Vetter
2013-01-29 16:13 ` [PATCH 2/6] drm/i915: Don't wait for page flips if there was GPU reset ville.syrjala
2013-02-13 10:23 ` Damien Lespiau
2013-02-13 10:51 ` Ville Syrjälä
2013-02-13 11:49 ` Daniel Vetter
2013-02-13 15:23 ` Daniel Vetter
2013-02-13 16:52 ` Ville Syrjälä
2013-02-13 17:09 ` Daniel Vetter
2013-01-29 16:13 ` [PATCH 3/6] drm/i915: Wake up pending_flip_queue as part of reset handling ville.syrjala
2013-02-13 10:24 ` Damien Lespiau
2013-02-13 15:31 ` Daniel Vetter
2013-01-29 16:13 ` [PATCH 4/6] drm/i915: Move intel_crtc_has_pending_flip() earlier ville.syrjala
2013-02-13 10:27 ` Damien Lespiau
2013-01-29 16:13 ` [PATCH 5/6] drm/i915: Add intel_crtc_wait_for_pending_flips_locked() ville.syrjala
2013-02-13 10:37 ` Damien Lespiau
2013-01-29 16:13 ` [PATCH 6/6] drm/i915: Really wait for pending flips in intel_pipe_set_base() ville.syrjala
2013-02-13 10:40 ` Damien Lespiau
2013-02-13 15:49 ` Daniel Vetter
2013-02-13 17:06 ` Ville Syrjälä
2013-02-13 17:11 ` Daniel Vetter
2013-02-13 17:26 ` Ville Syrjälä
2013-02-13 17:31 ` Daniel Vetter
2013-02-13 17:39 ` Chris Wilson
2013-01-29 16:39 ` [PATCH 0/6] drm/i915: Avoid stuck page flip waiters on GPU reset Daniel Vetter
2013-01-29 16:40 ` Daniel Vetter [this message]
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