[PATCH v2 02/14] nvmet/debugfs: Add ctrl uniquifier and random values

[Randy Jennings]

On Fri, Jan 30, 2026 at 2:36 PM Mohamed Khalfella
<mkhalfella at purestorage.com> wrote:
>
> Export ctrl->random and ctrl->uniquifier as debugfs files under
Please update to the new names.

> controller debugfs directory.
>
> Signed-off-by: Mohamed Khalfella <mkhalfella at purestorage.com>
> ---
>  drivers/nvme/target/debugfs.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
>
> diff --git a/drivers/nvme/target/debugfs.c b/drivers/nvme/target/debugfs.c
> index 5dcbd5aa86e1..1300adf6c1fb 100644
> --- a/drivers/nvme/target/debugfs.c
> +++ b/drivers/nvme/target/debugfs.c
> @@ -152,6 +152,23 @@ static int nvmet_ctrl_tls_concat_show(struct seq_file *m, void *p)
>  }
>  NVMET_DEBUGFS_ATTR(nvmet_ctrl_tls_concat);
>  #endif
> +static int nvmet_ctrl_instance_ciu_show(struct seq_file *m, void *p)
> +{
> +       struct nvmet_ctrl *ctrl = m->private;
> +
> +       seq_printf(m, "%02x\n", ctrl->ciu);
> +       return 0;
> +}
> +NVMET_DEBUGFS_ATTR(nvmet_ctrl_instance_ciu);
> +
> +static int nvmet_ctrl_instance_cirn_show(struct seq_file *m, void *p)
> +{
> +       struct nvmet_ctrl *ctrl = m->private;
> +
> +       seq_printf(m, "%016llx\n", ctrl->cirn);
> +       return 0;
> +}
> +NVMET_DEBUGFS_ATTR(nvmet_ctrl_instance_cirn);
>
>  int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl)
>  {
> @@ -184,6 +201,10 @@ int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl)
>         debugfs_create_file("tls_key", S_IRUSR, ctrl->debugfs_dir, ctrl,
>                             &nvmet_ctrl_tls_key_fops);
>  #endif
> +       debugfs_create_file("ciu", S_IRUSR, ctrl->debugfs_dir, ctrl,
> +                           &nvmet_ctrl_instance_ciu_fops);
> +       debugfs_create_file("cirn", S_IRUSR, ctrl->debugfs_dir, ctrl,
> +                           &nvmet_ctrl_instance_cirn_fops);
>         return 0;
>  }
>
> --
> 2.52.0
>