drm/ttm: remove TTM_PL_FLAG_NO_EVICT

Not used any more.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/391604/?series=81973&rev=1

drivers/gpu/drm/ttm/ttm_bo.c

@@ -118,9 +118,6 @@ static void ttm_bo_add_mem_to_lru(struct ttm_buffer_object *bo,
 	if (!list_empty(&bo->lru) || bo->pin_count)
 		return;
 
-	if (mem->placement & TTM_PL_FLAG_NO_EVICT)
-		return;
-
 	man = ttm_manager_type(bdev, mem->mem_type);
 	list_add_tail(&bo->lru, &man->lru[bo->priority]);
 
@@ -165,8 +162,7 @@ void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo,
 	ttm_bo_del_from_lru(bo);
 	ttm_bo_add_mem_to_lru(bo, &bo->mem);
 
-	if (bulk && !(bo->mem.placement & TTM_PL_FLAG_NO_EVICT) &&
-	    !bo->pin_count) {
+	if (bulk && !bo->pin_count) {
 		switch (bo->mem.mem_type) {
 		case TTM_PL_TT:
 			ttm_bo_bulk_move_set_pos(&bulk->tt[bo->priority], bo);
@@ -541,12 +537,11 @@ static void ttm_bo_release(struct kref *kref)
 		spin_lock(&ttm_bo_glob.lru_lock);
 
 		/*
-		 * Make NO_EVICT bos immediately available to
+		 * Make pinned bos immediately available to
 		 * shrinkers, now that they are queued for
 		 * destruction.
 		 */
-		if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT || bo->pin_count) {
-			bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT;
+		if (bo->pin_count) {
 			bo->pin_count = 0;
 			ttm_bo_del_from_lru(bo);
 			ttm_bo_add_mem_to_lru(bo, &bo->mem);

include/drm/ttm/ttm_placement.h

@@ -58,7 +58,6 @@
 #define TTM_PL_FLAG_UNCACHED    (1 << 17)
 #define TTM_PL_FLAG_WC          (1 << 18)
 #define TTM_PL_FLAG_CONTIGUOUS  (1 << 19)
-#define TTM_PL_FLAG_NO_EVICT    (1 << 21)
 #define TTM_PL_FLAG_TOPDOWN     (1 << 22)
 
 #define TTM_PL_MASK_CACHING     (TTM_PL_FLAG_CACHED | \