devl_rate_node_create
rate_node = devl_rate_node_create(devlink, node, node->name, NULL);
rate_node = devl_rate_node_create(devlink, node, node->name,
devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name,
EXPORT_SYMBOL_GPL(devl_rate_node_create);