drm/i915: Show bounds of active request in the ring on GPU hang
Include the position of the active request in the ring, and display that
alongside the current RING registers (on a GPU hang).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161004201132.21801-6-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f8c66ee..4613f03 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -788,6 +788,9 @@
struct i915_address_space *vm;
int num_requests;
+ /* position of active request inside the ring */
+ u32 rq_head, rq_post, rq_tail;
+
/* our own tracking of ring head and tail */
u32 cpu_ring_head;
u32 cpu_ring_tail;