diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 17010e7d0ea9..92d60585deb1 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1255,9 +1255,9 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
 }
 EXPORT_SYMBOL(ttm_bo_init);
 
-size_t ttm_bo_acc_size(struct ttm_bo_device *bdev,
-		       unsigned long bo_size,
-		       unsigned struct_size)
+static size_t ttm_bo_acc_size(struct ttm_bo_device *bdev,
+			      unsigned long bo_size,
+			      unsigned struct_size)
 {
 	unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT;
 	size_t size = 0;
@@ -1267,7 +1267,6 @@ size_t ttm_bo_acc_size(struct ttm_bo_device *bdev,
 	size += ttm_round_pot(sizeof(struct ttm_tt));
 	return size;
 }
-EXPORT_SYMBOL(ttm_bo_acc_size);
 
 size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev,
 			   unsigned long bo_size,
diff --git a/drivers/gpu/drm/ttm/ttm_memory.c b/drivers/gpu/drm/ttm/ttm_memory.c
index acd63b70d814..987aa32c4808 100644
--- a/drivers/gpu/drm/ttm/ttm_memory.c
+++ b/drivers/gpu/drm/ttm/ttm_memory.c
@@ -554,7 +554,6 @@ ttm_check_under_lowerlimit(struct ttm_mem_global *glob,
 
 	return false;
 }
-EXPORT_SYMBOL(ttm_check_under_lowerlimit);
 
 static int ttm_mem_global_reserve(struct ttm_mem_global *glob,
 				  struct ttm_mem_zone *single_zone,
@@ -682,9 +681,3 @@ size_t ttm_round_pot(size_t size)
 	return 0;
 }
 EXPORT_SYMBOL(ttm_round_pot);
-
-uint64_t ttm_get_kernel_zone_memory_size(struct ttm_mem_global *glob)
-{
-	return glob->zone_kernel->max_mem;
-}
-EXPORT_SYMBOL(ttm_get_kernel_zone_memory_size);
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 1d20a7f15a7a..89ad6f213fc0 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -353,18 +353,6 @@ void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched);
 bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
 			      const struct ttm_place *place);
 
-/**
- * ttm_bo_acc_size
- *
- * @bdev: Pointer to a ttm_bo_device struct.
- * @bo_size: size of the buffer object in byte.
- * @struct_size: size of the structure holding buffer object datas
- *
- * Returns size to account for a buffer object
- */
-size_t ttm_bo_acc_size(struct ttm_bo_device *bdev,
-		       unsigned long bo_size,
-		       unsigned struct_size);
 size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev,
 			   unsigned long bo_size,
 			   unsigned struct_size);
diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
index c78ea99c42cf..2d468d7c94e6 100644
--- a/include/drm/ttm/ttm_memory.h
+++ b/include/drm/ttm/ttm_memory.h
@@ -91,7 +91,6 @@ extern int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
 extern void ttm_mem_global_free_page(struct ttm_mem_global *glob,
 				     struct page *page, uint64_t size);
 extern size_t ttm_round_pot(size_t size);
-extern uint64_t ttm_get_kernel_zone_memory_size(struct ttm_mem_global *glob);
 extern bool ttm_check_under_lowerlimit(struct ttm_mem_global *glob,
 			uint64_t num_pages, struct ttm_operation_ctx *ctx);
 #endif