[Intel-gfx] [PATCH 05/13] drm/i915: introduce i915_hangcheck_ring_hung

[Mika Kuoppala]

In preparation to track per ring progress in hangcheck,
add i915_hangcheck_ring_hung.

Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c |   31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index de5af12..b828807 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1771,28 +1771,35 @@ static bool kick_ring(struct intel_ring_buffer *ring)
 	return false;
 }
 
+static bool i915_hangcheck_ring_hung(struct drm_device *dev,
+				     struct intel_ring_buffer *ring)
+{
+	if (!IS_GEN2(dev)) {
+		/* Is the chip hanging on a WAIT_FOR_EVENT?
+		 * If so we can simply poke the RB_WAIT bit
+		 * and break the hang. This should work on
+		 * all but the second generation chipsets.
+		 */
+		return !kick_ring(ring);
+	}
+
+	return false;
+}
+
 static bool i915_hangcheck_hung(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 
 	if (dev_priv->gpu_error.hangcheck_count++ > 1) {
 		bool hung = true;
+		struct intel_ring_buffer *ring;
+		int i;
 
 		DRM_ERROR("Hangcheck timer elapsed... GPU hung\n");
 		i915_handle_error(dev, true);
 
-		if (!IS_GEN2(dev)) {
-			struct intel_ring_buffer *ring;
-			int i;
-
-			/* Is the chip hanging on a WAIT_FOR_EVENT?
-			 * If so we can simply poke the RB_WAIT bit
-			 * and break the hang. This should work on
-			 * all but the second generation chipsets.
-			 */
-			for_each_ring(ring, dev_priv, i)
-				hung &= !kick_ring(ring);
-		}
+		for_each_ring(ring, dev_priv, i)
+			hung &= i915_hangcheck_ring_hung(dev, ring);
 
 		return hung;
 	}
-- 
1.7.9.5