[Intel-gfx] [PATCH 5/5] drm/i915: Forcibly flush unwanted requests in drop-caches

[Joonas Lahtinen]

Quoting Chris Wilson (2018-09-03 11:33:37)
> Add a mode to debugfs/drop-caches to flush unwanted requests off the GPU
> (by wedging the device and resetting). This is very useful if a test
> terminated leaving a long queue of hanging batches that would ordinarily
> require a round trip through hangcheck for each.
> 
> It reduces the inter-test operation to just a write into drop-caches to
> reset driver/GPU state between tests.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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

Regards, Joonas