1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index aa15c52ae182..9b2e7864dbd0 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -1459,3 +1459,21 @@ tail:
 	return freed;
 }
 EXPORT_SYMBOL(drm_gem_lru_scan);
+
+/**
+ * drm_gem_evict - helper to evict backing pages for a GEM object
+ * @obj: obj in question
+ */
+int drm_gem_evict(struct drm_gem_object *obj)
+{
+	dma_resv_assert_held(obj->resv);
+
+	if (!dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ))
+		return -EBUSY;
+
+	if (obj->funcs->evict)
+		return obj->funcs->evict(obj);
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_gem_evict);