[PATCH 08/10] drm/ttm: wait for BO idle after the move in ttm_bo_swapout

[Christian König]

From: Christian König <christian.koe...@amd.com>

Final part to avoid pre move waits.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 86dd6950..c3c615c 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1655,14 +1655,9 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink)
        ttm_bo_list_ref_sub(bo, put_count, true);

        /**
-        * Wait for GPU, then move to system cached.
+        * Move to system cached
         */

-       ret = ttm_bo_wait(bo, false, false);
-
-       if (unlikely(ret != 0))
-               goto out;
-
        if ((bo->mem.placement & swap_placement) != swap_placement) {
                struct ttm_mem_reg evict_mem;

@@ -1677,6 +1672,14 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink)
                        goto out;
        }

+       /**
+        * Make sure BO is idle.
+        */
+
+       ret = ttm_bo_wait(bo, false, false);
+       if (unlikely(ret != 0))
+               goto out;
+
        ttm_bo_unmap_virtual(bo);

        /**
-- 
2.5.0