Subject: Re: [PATCH 5/7] drm/pan*: don't abuse current->group_leader

From: Boris Brezillon <[email-masked]>
Date: Mon, 8 Dec 2025 09:23:43 +0100

On Sun, 7 Dec 2025 13:39:53 +0100
Oleg Nesterov <[email-masked]> wrote:

> Cleanup and preparation to simplify the next changes.
> 
> Use current->tgid instead of current->group_leader->pid.
> 
> Signed-off-by: Oleg Nesterov <[email-masked]>
> ---
>  drivers/gpu/drm/panfrost/panfrost_gem.c | 2 +-
>  drivers/gpu/drm/panthor/panthor_gem.c   | 2 +-

Acked-by: Boris Brezillon <[email-masked]>

>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
> index 8041b65c6609..1ff1f2c8b726 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_gem.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
> @@ -17,7 +17,7 @@
>  static void panfrost_gem_debugfs_bo_add(struct panfrost_device *pfdev,
>  					struct panfrost_gem_object *bo)
>  {
> -	bo->debugfs.creator.tgid = current->group_leader->pid;
> +	bo->debugfs.creator.tgid = current->tgid;
>  	get_task_comm(bo->debugfs.creator.process_name, current->group_leader);
>  
>  	mutex_lock(&pfdev->debugfs.gems_lock);
> diff --git a/drivers/gpu/drm/panthor/panthor_gem.c b/drivers/gpu/drm/panthor/panthor_gem.c
> index fbde78db270a..29cc57efc4b9 100644
> --- a/drivers/gpu/drm/panthor/panthor_gem.c
> +++ b/drivers/gpu/drm/panthor/panthor_gem.c
> @@ -27,7 +27,7 @@ static void panthor_gem_debugfs_bo_add(struct panthor_gem_object *bo)
>  	struct panthor_device *ptdev = container_of(bo->base.base.dev,
>  						    struct panthor_device, base);
>  
> -	bo->debugfs.creator.tgid = current->group_leader->pid;
> +	bo->debugfs.creator.tgid = current->tgid;
>  	get_task_comm(bo->debugfs.creator.process_name, current->group_leader);
>  
>  	mutex_lock(&ptdev->gems.lock);