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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: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191222210256.2066451-1-chris@chris-wilson.co.uk
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@ -138,6 +138,10 @@ try_again:
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struct i915_address_space *vm = vma->vm;
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bool awake = false;
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list_move_tail(&vma->obj_link, &still_in_list);
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if (!i915_vma_is_bound(vma, I915_VMA_BIND_MASK))
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continue;
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ret = -EAGAIN;
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if (!i915_vm_tryopen(vm))
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break;
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@ -153,7 +157,6 @@ try_again:
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}
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}
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list_move_tail(&vma->obj_link, &still_in_list);
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spin_unlock(&obj->vma.lock);
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ret = -EBUSY;
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