Re: [PATCH v18 04/26] drm/shmem-helper: Refactor locked/unlocked functions

[Maxime Ripard]

On Mon, Oct 30, 2023 at 02:01:43AM +0300, Dmitry Osipenko wrote:
> Add locked and remove unlocked postfixes from drm-shmem function names,
> making names consistent with the drm/gem core code.
> 
> Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
> Suggested-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>

This contradicts my earlier ack on a patch but...

> ---
>  drivers/gpu/drm/drm_gem_shmem_helper.c        | 64 +++++++++----------
>  drivers/gpu/drm/lima/lima_gem.c               |  8 +--
>  drivers/gpu/drm/panfrost/panfrost_drv.c       |  2 +-
>  drivers/gpu/drm/panfrost/panfrost_gem.c       |  6 +-
>  .../gpu/drm/panfrost/panfrost_gem_shrinker.c  |  2 +-
>  drivers/gpu/drm/panfrost/panfrost_mmu.c       |  2 +-
>  drivers/gpu/drm/v3d/v3d_bo.c                  |  4 +-
>  drivers/gpu/drm/virtio/virtgpu_object.c       |  4 +-
>  include/drm/drm_gem_shmem_helper.h            | 36 +++++------
>  9 files changed, 64 insertions(+), 64 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
> index 0d61f2b3e213..154585ddae08 100644
> --- a/drivers/gpu/drm/drm_gem_shmem_helper.c
> +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
> @@ -43,8 +43,8 @@ static const struct drm_gem_object_funcs drm_gem_shmem_funcs = {
>  	.pin = drm_gem_shmem_object_pin,
>  	.unpin = drm_gem_shmem_object_unpin,
>  	.get_sg_table = drm_gem_shmem_object_get_sg_table,
> -	.vmap = drm_gem_shmem_object_vmap,
> -	.vunmap = drm_gem_shmem_object_vunmap,
> +	.vmap = drm_gem_shmem_object_vmap_locked,
> +	.vunmap = drm_gem_shmem_object_vunmap_locked,

While I think we should indeed be consistent with the names, I would
also expect helpers to get the locking right by default.

I'm not sure how reasonable it is, but I think I'd prefer to turn this
around and keep the drm_gem_shmem_object_vmap/unmap helpers name, and
convert whatever function needs to be converted to the unlock suffix so
we get a consistent naming.

Does that make sense?
Maxime

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