[PATCH 2/5] drm/ttm: fix adding foreign BOs to the swap LRU

[Thomas Hellstrom]

Reviewed-by: Thomas Hellstrom 

BTW, does Radeon touch the caching mode of imported buffers through TTM
(like write-combining)?
Do we need something similar for that?

/Thomas


On 01/11/2016 03:35 PM, Christian König wrote:
> From: Christian König 
>
> It doesn't make any sense to try to swap out imported BOs.
>
> Signed-off-by: Christian König 
> ---
>  drivers/gpu/drm/ttm/ttm_bo.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index a98a5d5..3ea9a01 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -176,7 +176,7 @@ void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)
>   list_add_tail(>lru, >lru);
>   kref_get(>list_kref);
>  
> - if (bo->ttm != NULL) {
> + if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) {
>   list_add_tail(>swap, >glob->swap_lru);
>   kref_get(>list_kref);
>   }

[PATCH 2/5] drm/ttm: fix adding foreign BOs to the swap LRU

[Christian König]

From: Christian König 

It doesn't make any sense to try to swap out imported BOs.

Signed-off-by: Christian König 
---
 drivers/gpu/drm/ttm/ttm_bo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index a98a5d5..3ea9a01 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -176,7 +176,7 @@ void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)
list_add_tail(>lru, >lru);
kref_get(>list_kref);

-   if (bo->ttm != NULL) {
+   if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) {
list_add_tail(>swap, >glob->swap_lru);
kref_get(>list_kref);
}
-- 
2.5.0