[PATCH 47/59] drm/ttm: move range manager to subclassed driver allocation

[Ben Skeggs]

On Tue, 4 Aug 2020 at 12:58, Dave Airlie <airlied at gmail.com> wrote:
>
> From: Dave Airlie <airlied at redhat.com>
>
> Reviewed-by: Christian König <christian.koenig at amd.com>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
Reviewed-by: Ben Skeggs <bskeggs at redhat.com>

> ---
>  drivers/gpu/drm/ttm/ttm_bo_manager.c | 31 +++++++++++++++++-----------
>  1 file changed, 19 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c
> index d83cb967a107..01d41c6f2f7b 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
> @@ -44,16 +44,22 @@
>   */
>
>  struct ttm_range_manager {
> +       struct ttm_mem_type_manager manager;
>         struct drm_mm mm;
>         spinlock_t lock;
>  };
>
> +static inline struct ttm_range_manager *to_range_manager(struct ttm_mem_type_manager *man)
> +{
> +       return container_of(man, struct ttm_range_manager, manager);
> +}
> +
>  static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
>                                struct ttm_buffer_object *bo,
>                                const struct ttm_place *place,
>                                struct ttm_mem_reg *mem)
>  {
> -       struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
> +       struct ttm_range_manager *rman = to_range_manager(man);
>         struct drm_mm *mm = &rman->mm;
>         struct drm_mm_node *node;
>         enum drm_mm_insert_mode mode;
> @@ -92,7 +98,7 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
>  static void ttm_bo_man_put_node(struct ttm_mem_type_manager *man,
>                                 struct ttm_mem_reg *mem)
>  {
> -       struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
> +       struct ttm_range_manager *rman = to_range_manager(man);
>
>         if (mem->mm_node) {
>                 spin_lock(&rman->lock);
> @@ -113,25 +119,26 @@ int ttm_range_man_init(struct ttm_bo_device *bdev,
>                        bool use_tt,
>                        unsigned long p_size)
>  {
> -       struct ttm_mem_type_manager *man = ttm_manager_type(bdev, type);
> +       struct ttm_mem_type_manager *man;
>         struct ttm_range_manager *rman;
>
> -       man->available_caching = available_caching;
> -       man->default_caching = default_caching;
> -       man->use_tt = use_tt;
> -
>         rman = kzalloc(sizeof(*rman), GFP_KERNEL);
>         if (!rman)
>                 return -ENOMEM;
>
> +       man = &rman->manager;
> +       man->available_caching = available_caching;
> +       man->default_caching = default_caching;
> +       man->use_tt = use_tt;
> +
>         man->func = &ttm_bo_manager_func;
>
>         ttm_mem_type_manager_init(bdev, man, p_size);
>
>         drm_mm_init(&rman->mm, 0, p_size);
>         spin_lock_init(&rman->lock);
> -       man->priv = rman;
>
> +       ttm_set_driver_manager(bdev, type, &rman->manager);
>         ttm_mem_type_manager_set_used(man, true);
>         return 0;
>  }
> @@ -141,7 +148,7 @@ int ttm_range_man_fini(struct ttm_bo_device *bdev,
>                        unsigned type)
>  {
>         struct ttm_mem_type_manager *man = ttm_manager_type(bdev, type);
> -       struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
> +       struct ttm_range_manager *rman = to_range_manager(man);
>         struct drm_mm *mm = &rman->mm;
>         int ret;
>
> @@ -155,10 +162,10 @@ int ttm_range_man_fini(struct ttm_bo_device *bdev,
>         drm_mm_clean(mm);
>         drm_mm_takedown(mm);
>         spin_unlock(&rman->lock);
> -       kfree(rman);
> -       man->priv = NULL;
>
>         ttm_mem_type_manager_cleanup(man);
> +       ttm_set_driver_manager(bdev, type, NULL);
> +       kfree(rman);
>         return 0;
>  }
>  EXPORT_SYMBOL(ttm_range_man_fini);
> @@ -166,7 +173,7 @@ EXPORT_SYMBOL(ttm_range_man_fini);
>  static void ttm_bo_man_debug(struct ttm_mem_type_manager *man,
>                              struct drm_printer *printer)
>  {
> -       struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
> +       struct ttm_range_manager *rman = to_range_manager(man);
>
>         spin_lock(&rman->lock);
>         drm_mm_print(&rman->mm, printer);
> --
> 2.26.2
>
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