drm/i915: Don't accumulate hangcheck score on forward progress

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If the actual head has progressed forward inside a batch (request),
don't accumulate hangcheck score.

As the hangcheck score in increased only by acthd jumping backwards,
the result is that we only declare an active batch as stuck if it is
trapped inside a loop. Or that the looping will dominate the batch
progression so that it overcomes the bonus that forward progress gives.

v2: Improved commit message (Chris Wilson)

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: s/active_loop/active (loop)/ as requested by Chris.]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Mika Kuoppala 2014-08-05 17:16:26 +03:00 • committed by Daniel Vetter

parent 02c9f7e3cf

commit f260fe7b2f

3 changed files with 16 additions and 3 deletions

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2

drivers/gpu/drm/i915/i915_gpu_error.c

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15

drivers/gpu/drm/i915/i915_irq.c

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2

drivers/gpu/drm/i915/intel_ringbuffer.h

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