linux-kernel - Re: [PATCH v17 14/18] drm/shmem-helper: Export drm_gem_shmem_get_pages_sgt

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Date:   Fri, 15 Sep 2023 10:47:16 +0200
From:   Boris Brezillon <boris.brezillon@...labora.com>
To:     Dmitry Osipenko <dmitry.osipenko@...labora.com>
Cc:     David Airlie <airlied@...il.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Gurchetan Singh <gurchetansingh@...omium.org>,
        Chia-I Wu <olvaffe@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Christian König <christian.koenig@....com>,
        Qiang Yu <yuq825@...il.com>,
        Steven Price <steven.price@....com>,
        Emma Anholt <emma@...olt.net>, Melissa Wen <mwen@...lia.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com, virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v17 14/18] drm/shmem-helper: Export
 drm_gem_shmem_get_pages_sgt_locked()

On Fri, 15 Sep 2023 02:27:17 +0300
Dmitry Osipenko <dmitry.osipenko@...labora.com> wrote:

> Export drm_gem_shmem_get_pages_sgt_locked() that will be used by virtio-gpu
> shrinker during GEM swap-in operation done under the held reservation lock.
> 
> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>

Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>

> ---
>  drivers/gpu/drm/drm_gem_shmem_helper.c | 3 ++-
>  include/drm/drm_gem_shmem_helper.h     | 1 +
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
> index b1cd56e12f66..1ebdf6b53ce4 100644
> --- a/drivers/gpu/drm/drm_gem_shmem_helper.c
> +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
> @@ -865,7 +865,7 @@ struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem)
>  }
>  EXPORT_SYMBOL_GPL(drm_gem_shmem_get_sg_table);
>  
> -static struct sg_table *drm_gem_shmem_get_pages_sgt_locked(struct drm_gem_shmem_object *shmem)
> +struct sg_table *drm_gem_shmem_get_pages_sgt_locked(struct drm_gem_shmem_object *shmem)
>  {
>  	struct drm_gem_object *obj = &shmem->base;
>  	int ret;
> @@ -903,6 +903,7 @@ static struct sg_table *drm_gem_shmem_get_pages_sgt_locked(struct drm_gem_shmem_
>  	drm_gem_shmem_put_pages_locked(shmem);
>  	return ERR_PTR(ret);
>  }
> +EXPORT_SYMBOL_GPL(drm_gem_shmem_get_pages_sgt_locked);
>  
>  /**
>   * drm_gem_shmem_get_pages_sgt - Pin pages, dma map them, and return a
> diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
> index 0bc6e8797162..44c6e14d8e3d 100644
> --- a/include/drm/drm_gem_shmem_helper.h
> +++ b/include/drm/drm_gem_shmem_helper.h
> @@ -147,6 +147,7 @@ void drm_gem_shmem_purge_locked(struct drm_gem_shmem_object *shmem);
>  
>  struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem);
>  struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem);
> +struct sg_table *drm_gem_shmem_get_pages_sgt_locked(struct drm_gem_shmem_object *shmem);
>  
>  void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem,
>  			      struct drm_printer *p, unsigned int indent);