[Intel-gfx] [RFC] drm/i915/hangcheck: Look at instdone for all engines

[Chris Wilson]

Quoting Tvrtko Ursulin (2019-06-10 14:01:10)
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> It seems intel_engine_get_instdone is able to get instdone for all engines
> but intel_hangcheck.c/subunits_stuck decides to ignore it for non render.
> 
> We can just drop the check in subunits_stuck since the checks on
> unavailable fields will always return stuck, which when bitwise and with
> the potential unstuck instdone is harmless.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> ---
> Would actually using the available data improve hang detection?

I got hung up on this question, and didn't address the patch on its
merits.

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris