[PATCH] drm/ttm: use ttm_resource_unevictable() to replace pin_count and swapped

[Zhaoyu Liu <liuzhaoyu.zackary@bytedance.com>]

TTM always uses pin_count and ttm_resource_is_swapped() together to
determine whether a BO is unevictable.
Now use ttm_resource_unevictable() to replace them.

Signed-off-by: Zhaoyu Liu <liuzhaoyu.zackary@bytedance.com>
---
 drivers/gpu/drm/ttm/ttm_resource.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c
index cc29bbf3eabb..a8f9f7ed6c6e 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -252,11 +252,16 @@ static bool ttm_resource_is_swapped(struct ttm_resource *res, struct ttm_buffer_
 	return ttm_tt_is_swapped(bo->ttm);
 }
 
+static bool ttm_resource_unevictable(struct ttm_resource *res, struct ttm_buffer_object *bo)
+{
+	return bo->pin_count || ttm_resource_is_swapped(res, bo);
+}
+
 /* Add the resource to a bulk move if the BO is configured for it */
 void ttm_resource_add_bulk_move(struct ttm_resource *res,
 				struct ttm_buffer_object *bo)
 {
-	if (bo->bulk_move && !bo->pin_count && !ttm_resource_is_swapped(res, bo))
+	if (bo->bulk_move && !ttm_resource_unevictable(res, bo))
 		ttm_lru_bulk_move_add(bo->bulk_move, res);
 }
 
@@ -264,7 +269,7 @@ void ttm_resource_add_bulk_move(struct ttm_resource *res,
 void ttm_resource_del_bulk_move(struct ttm_resource *res,
 				struct ttm_buffer_object *bo)
 {
-	if (bo->bulk_move && !bo->pin_count && !ttm_resource_is_swapped(res, bo))
+	if (bo->bulk_move && !ttm_resource_unevictable(res, bo))
 		ttm_lru_bulk_move_del(bo->bulk_move, res);
 }
 
@@ -276,10 +281,10 @@ void ttm_resource_move_to_lru_tail(struct ttm_resource *res)
 
 	lockdep_assert_held(&bo->bdev->lru_lock);
 
-	if (bo->pin_count || ttm_resource_is_swapped(res, bo)) {
+	if (ttm_resource_unevictable(res, bo)) {
 		list_move_tail(&res->lru.link, &bdev->unevictable);
 
-	} else	if (bo->bulk_move) {
+	} else if (bo->bulk_move) {
 		struct ttm_lru_bulk_move_pos *pos =
 			ttm_lru_bulk_move_pos(bo->bulk_move, res);
 
@@ -318,7 +323,7 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
 
 	man = ttm_manager_type(bo->bdev, place->mem_type);
 	spin_lock(&bo->bdev->lru_lock);
-	if (bo->pin_count || ttm_resource_is_swapped(res, bo))
+	if (ttm_resource_unevictable(res, bo))
 		list_add_tail(&res->lru.link, &bo->bdev->unevictable);
 	else
 		list_add_tail(&res->lru.link, &man->lru[bo->priority]);
-- 
2.25.1