On Mon, Mar 21, 2022 at 02:25:59PM +0100, Christian König wrote:
> Those functions are going to become more complex, don't inline them any
> more.
>
> Signed-off-by: Christian König <christian.koe...@amd.com>
> ---
> drivers/gpu/drm/ttm/ttm_bo.c | 31 +++++++++++++++++++++++++++++++
> include/drm/ttm/ttm_bo_api.h | 30 ++----------------------------
> 2 files changed, 33 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index b119af33e7d7..502617ee9303 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -633,6 +633,37 @@ int ttm_mem_evict_first(struct ttm_device *bdev,
> return ret;
> }
>
> +/**
> + * ttm_bo_pin - Pin the buffer object.
> + * @bo: The buffer object to pin
> + *
> + * Make sure the buffer is not evicted any more during memory pressure.
Maybe add kerneldoc cross links here while at it.
"@bo must be unpinned again by calling ttm_bo_unpin()."
or whatever you prefer.
Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch>
> + */
> +void ttm_bo_pin(struct ttm_buffer_object *bo)
> +{
> + dma_resv_assert_held(bo->base.resv);
> + WARN_ON_ONCE(!kref_read(&bo->kref));
> + ++bo->pin_count;
> +}
> +EXPORT_SYMBOL(ttm_bo_pin);
> +
> +/**
> + * ttm_bo_unpin - Unpin the buffer object.
> + * @bo: The buffer object to unpin
> + *
> + * Allows the buffer object to be evicted again during memory pressure.
> + */
> +void ttm_bo_unpin(struct ttm_buffer_object *bo)
> +{
> + dma_resv_assert_held(bo->base.resv);
> + WARN_ON_ONCE(!kref_read(&bo->kref));
> + if (bo->pin_count)
> + --bo->pin_count;
> + else
> + WARN_ON_ONCE(true);
> +}
> +EXPORT_SYMBOL(ttm_bo_unpin);
> +
> /*
> * Add the last move fence to the BO and reserve a new shared slot. We only
> use
> * a shared slot to avoid unecessary sync and rely on the subsequent bo move
> to
> diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
> index 3da77fc54552..885b7698fd65 100644
> --- a/include/drm/ttm/ttm_bo_api.h
> +++ b/include/drm/ttm/ttm_bo_api.h
> @@ -524,34 +524,8 @@ ssize_t ttm_bo_io(struct ttm_device *bdev, struct file
> *filp,
> int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx
> *ctx,
> gfp_t gfp_flags);
>
> -/**
> - * ttm_bo_pin - Pin the buffer object.
> - * @bo: The buffer object to pin
> - *
> - * Make sure the buffer is not evicted any more during memory pressure.
> - */
> -static inline void ttm_bo_pin(struct ttm_buffer_object *bo)
> -{
> - dma_resv_assert_held(bo->base.resv);
> - WARN_ON_ONCE(!kref_read(&bo->kref));
> - ++bo->pin_count;
> -}
> -
> -/**
> - * ttm_bo_unpin - Unpin the buffer object.
> - * @bo: The buffer object to unpin
> - *
> - * Allows the buffer object to be evicted again during memory pressure.
> - */
> -static inline void ttm_bo_unpin(struct ttm_buffer_object *bo)
> -{
> - dma_resv_assert_held(bo->base.resv);
> - WARN_ON_ONCE(!kref_read(&bo->kref));
> - if (bo->pin_count)
> - --bo->pin_count;
> - else
> - WARN_ON_ONCE(true);
> -}
> +void ttm_bo_pin(struct ttm_buffer_object *bo);
> +void ttm_bo_unpin(struct ttm_buffer_object *bo);
>
> int ttm_mem_evict_first(struct ttm_device *bdev,
> struct ttm_resource_manager *man,
> --
> 2.25.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
