amdgpu: ratelimit on vm faults to avoid spaming console

[Christian König]

I would rather say that we need to add this to the per context lockup 
informations.

Marek had a rather good start for this, but from the VM fault handler it 
is actually rather tricky to figure out reliable who caused it.

Because of this we didn't followed this approach to the end.

Christian.

Am 07.11.2016 um 19:42 schrieb StDenis, Tom:
>
> Could we provide fault information through a ring buffer and a debugfs 
> or drm ioctl interface?
>
>
> Tom
>
>
>
> ------------------------------------------------------------------------
> *From:* amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of 
> Alex Deucher <alexdeucher at gmail.com>
> *Sent:* Monday, November 7, 2016 13:35
> *To:* Edward O'Callaghan; Nicolai Hähnle; Marek Olsak
> *Cc:* Michel Dänzer; amd-gfx list
> *Subject:* Re: amdgpu: ratelimit on vm faults to avoid spaming console
> On Sun, Nov 6, 2016 at 11:35 PM, Edward O'Callaghan
> <funfunctor at folklore1984.net> wrote:
> > These are rather minor however should help stop some folks
> > machines grinding to a halt when a userspace application somehow
> > gets the GPU into some horrible state causing the console to fill
> > very quickly. Applies on top of master.
>
> I'm generally ok with the idea.  My only concern would be if this
> would adversely affect the radeon GPUVM debugging options in mesa and
> piglit. Nicolai? Marek?
>
> Alex
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