[Intel-gfx] [PATCH v2] drm/i915: Show GEM_TRACE when detecting a failed GPU idle

[Joonas Lahtinen]

Quoting Chris Wilson (2018-03-09 12:11:14)
> If we timeout waiting for the GPU to idle, something went seriously
> wrong. We currently dump the engine state, but we can also dump the
> ftrace buffer showing our last operations (when available).
> 
> In passing, note that since commit 559e040f1f08 ("drm/i915: Show the GPU
> state when declaring wedged", we now show the engine state twice, once
> in detecting the failed idle and then again on declaring wedged.
> 
> v2: ftrace_dump() takes a parameter specifying whether to dump all cpu
> buffers or the local cpu's.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas