Latest drm-next-4.9-wip is causing gfx kernel thread to be pegged 100% running piglit

[Shawn Starr]

On Sunday, September 18, 2016 8:06:51 PM EDT Shawn Starr wrote:
> Looks like something broke in drm-next-4.9-wip, unsure which change did.
> 
> When running: piglit tests/gpu summary/amdgpu
> 

It's spinning in:

   82.37%    82.37%  [kernel]                                          [k] 
amdgpu_sync_peek_fence

This is on a CIK (Bonaire) chip.

Thanks,
Shawn	

> 
> Also triggers:
> [ 1848.505498] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* ttm_eu_reserve_buffers
> failed.
> 
> Will test 4.8-rc6 vanilla to see if something broke there.
> 
> Thanks,
> Shawn
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