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

Zhaoyu Liu posted 1 patch 1 year ago 
drivers/gpu/drm/ttm/ttm_resource.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
[PATCH] drm/ttm: use ttm_resource_unevictable() to replace pin_count and swapped
Posted by Zhaoyu Liu 1 year ago 
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
Re: [PATCH] drm/ttm: use ttm_resource_unevictable() to replace pin_count and swapped
Posted by Christian König 1 year ago 
Am 26.01.25 um 10:32 schrieb Zhaoyu Liu:
> 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>

Reviewed-by: Christian König <christian.koenig@amd.com>

I will pick this up for drm-misc-next.

> ---
>   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]);
Re: [PATCH] drm/ttm: use ttm_resource_unevictable() to replace pin_count and swapped
Posted by Zhaoyu Liu 1 year ago 
On Tue, Feb 04, 2025 at 08:59:08AM +0100, Christian König wrote:
> Am 26.01.25 um 10:32 schrieb Zhaoyu Liu:
> > 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>
> 
> Reviewed-by: Christian König <christian.koenig@amd.com>
> 
> I will pick this up for drm-misc-next.
> 

Thanks,
but I don't see it in drm-misc-next(https://cgit.freedesktop.org/drm/drm-misc/log),
is it not merged yet?

---
All The Best

> > ---
> >   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]);
>

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