[PATCH] drm/ttm: wait for eviction in ttm_bo_force_list_clean - dri-devel - freedesktop.org experimental mailing list

22 Jun 2016

From: Christian König christian.koenig@amd.com
Now that we can pipeline evictions we need to wait for
them to finish when we cleanup a memory domain.
Signed-off-by: Christian König christian.koenig@amd.com
---
 drivers/gpu/drm/ttm/ttm_bo.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 5d93169..e340d0d6 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1287,6 +1287,7 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev,
 {
    struct ttm_mem_type_manager *man = &bdev->man[mem_type];
    struct ttm_bo_global *glob = bdev->glob;
+	struct fence *fence;
    int ret;
/*
@@ -1307,6 +1308,23 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev,
    	spin_lock(&glob->lru_lock);
    }
    spin_unlock(&glob->lru_lock);
+
+	spin_lock(&man->move_lock);
+	fence = fence_get(man->move);
+	spin_unlock(&man->move_lock);
+
+	if (fence) {
+		ret = fence_wait(fence, false);
+		fence_put(fence);
+		if (ret) {
+			if (allow_errors) {
+				return ret;
+			} else {
+				pr_err("Cleanup eviction failed\n");
+			}
+		}
+	}
+
    return 0;
 }
-- 
2.5.0


    