Re: [PATCH v9 29/31] fs/resctrl: Provide interface to create architecture specific debugfs area

[Reinette Chatre]

Hi Tony,

On 8/29/25 12:33 PM, Tony Luck wrote:
> diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h
> index 1f42bc761377..8a010c29c8b4 100644
> --- a/include/linux/resctrl.h
> +++ b/include/linux/resctrl.h
> @@ -569,6 +569,15 @@ void resctrl_arch_reset_all_ctrls(struct rdt_resource *r);
>  extern unsigned int resctrl_rmid_realloc_threshold;
>  extern unsigned int resctrl_rmid_realloc_limit;
>  
> +/**
> + * resctrl_debugfs_mon_info_arch_mkdir() - Create a debugfs info directory.
> + *					   Removed by resctrl_exit().
> + * @r:	Resource (must be mon_capable).
> + *
> + * Return: dentry pointer on success, or NULL on error.

NULL is returned if resource is not monitoring capable, otherwise
it returns debugfs_create_dir() which is ERR_PTR(-ERROR) on failure.

Reinette