Commit f5af1659 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Add a simple is-bound check before unbinding 



Only acquire the various atomic references required to unbind the vma if
we do need to unbind the vma.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Acked-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191222210256.2066451-1-chris@chris-wilson.co.uk
parent 4941f35b

drivers/gpu/drm/i915/i915_gem.c

+4 −1
Original line number Diff line number Diff line
@@ -138,6 +138,10 @@ try_again: 
		struct i915_address_space *vm = vma->vm;

		bool awake = false;



		list_move_tail(&vma->obj_link, &still_in_list);

		if (!i915_vma_is_bound(vma, I915_VMA_BIND_MASK))

			continue;



		ret = -EAGAIN;

		if (!i915_vm_tryopen(vm))

			break;
@@ -153,7 +157,6 @@ try_again: 
			}

		}



		list_move_tail(&vma->obj_link, &still_in_list);

		spin_unlock(&obj->vma.lock);



		ret = -EBUSY;

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