From: Christian König <christian.koenig@xxxxxxx>
When we use an extern reservation object that otherwise waits for every
fence registered with it.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_bo.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 4cbf265..367b87b 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -998,13 +998,19 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
lockdep_assert_held(&bo->resv->lock.base);
/*
- * FIXME: It's possible to pipeline buffer moves.
- * Have the driver move function wait for idle when necessary,
- * instead of doing it here.
+ * Don't wait for the BO on initial allocation. This is important when
+ * the BO has an imported reservation object.
*/
- ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
- if (ret)
- return ret;
+ if (bo->mem.mem_type != TTM_PL_SYSTEM || bo->ttm != NULL) {
+ /*
+ * FIXME: It's possible to pipeline buffer moves.
+ * Have the driver move function wait for idle when necessary,
+ * instead of doing it here.
+ */
+ ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
+ if (ret)
+ return ret;
+ }
mem.num_pages = bo->num_pages;
mem.size = mem.num_pages << PAGE_SHIFT;
mem.page_alignment = bo->mem.page_alignment;
--
2.5.0
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