Debugging tools/approach for GPU hangs?

[Jesse Barnes]

On Thu, 24 Sep 2009 09:26:12 -0700
Matt Zimmerman <mdz at canonical.com> wrote:

> On Thu, Sep 24, 2009 at 09:12:00AM -0700, Jesse Barnes wrote:
> > On Wed, 23 Sep 2009 15:28:54 -0700
> > Matt Zimmerman <mdz at canonical.com> wrote:
> > > Yes, that's exactly what I was looking for, thanks.
> > > 
> > > I assume we should get the dump after the error and before the
> > > reset?
> > 
> > Yeah, if you can capture it at the first ERROR=1 event it might be
> > helpful.  Capturing state after the reset probably isn't necessary.
> 
> I've written some code which I think will work; do you have any
> suggestions as to how to test it?  Is it possible to trigger an error
> intentionally?

We do have some hang tests in intel-gpu-tools; that's probably the best
place to start (git://git.freedesktop.org/git/xorg/app/intel-gpu-tools
iirc).

Jesse