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Commit 9792e213 authored by Chris Wilson's avatar Chris Wilson
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drm/i915/breadcrumbs: Assert all missed breadcrumbs were signaled 



When parking the engines and their breadcrumbs, if we have waiters left
then they missed their wakeup. Verify that each waiter's seqno did
complete.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180222092545.17216-2-chris@chris-wilson.co.uk
parent cd46c545

drivers/gpu/drm/i915/intel_breadcrumbs.c

+2 −0
Original line number Diff line number Diff line
@@ -247,6 +247,8 @@ void intel_engine_disarm_breadcrumbs(struct intel_engine_cs *engine) 
	spin_unlock(&b->irq_lock);



	rbtree_postorder_for_each_entry_safe(wait, n, &b->waiters, node) {

		GEM_BUG_ON(!i915_seqno_passed(intel_engine_get_seqno(engine),

					      wait->seqno));

		RB_CLEAR_NODE(&wait->node);

		wake_up_process(wait->tsk);

	}