Re: [PATCH v8 1/5] vfio/migration: Add debugfs to live migration driver

[Jason Gunthorpe]

On Fri, Feb 17, 2023 at 04:48:27PM +0800, Longfang Liu wrote:
> +void vfio_vf_debugfs_init(struct vfio_device *vdev)
> +{
> +	struct device *dev = &vdev->device;
> +
> +	vdev->debug_root = debugfs_create_dir(dev_name(vdev->dev), vfio_debugfs_root);
> +
> +	debugfs_create_devm_seqfile(dev, "migration_state", vdev->debug_root,
> +				  vfio_vf_state_read);
> +}
> +EXPORT_SYMBOL_GPL(vfio_vf_debugfs_init);
> +
> +void vfio_vf_debugfs_exit(struct vfio_device *vdev)
> +{
> +	debugfs_remove_recursive(vdev->debug_root);
> +}
> +EXPORT_SYMBOL_GPL(vfio_vf_debugfs_exit);
> +
> +void  vfio_debugfs_create_root(void)
> +{
> +	vfio_debugfs_root = debugfs_create_dir("vfio", NULL);
> +}
> +EXPORT_SYMBOL_GPL(vfio_debugfs_create_root);
> +
> +void  vfio_debugfs_remove_root(void)
> +{
> +	debugfs_remove_recursive(vfio_debugfs_root);
> +	vfio_debugfs_root = NULL;
> +}
> +EXPORT_SYMBOL_GPL(vfio_debugfs_remove_root);

Why are these symbols exported?

Jason