Commit 779949f4 authored by Peter Antoine's avatar Peter Antoine Committed by Daniel Vetter
Browse files

drm/i915: Warn when execlists changes context without IRQs 



If an batch ends while the IRQs are not turned on the notification can
go missing and the GPU can hang. So generate a warning in this case.

Signed-off-by: default avatarPeter Antoine <peter.antoine@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 2614f17d

drivers/gpu/drm/i915/intel_lrc.c

+6 −0
Original line number Diff line number Diff line
@@ -394,6 +394,12 @@ static void execlists_context_unqueue(struct intel_engine_cs *ring) 


	assert_spin_locked(&ring->execlist_lock);



	/*

	 * If irqs are not active generate a warning as batches that finish

	 * without the irqs may get lost and a GPU Hang may occur.

	 */

	WARN_ON(!intel_irqs_enabled(ring->dev->dev_private));



	if (list_empty(&ring->execlist_queue))

		return;

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