register_xenbus_watch
err = register_xenbus_watch(watch);
if (register_xenbus_watch(&xxw_new->xxw_watch) != 0) {
if (register_xenbus_watch(&pdp->xd_hp_watch) != 0) {
if (register_xenbus_watch(&pdp->xd_bepath_watch) != 0) {
if (register_xenbus_watch(w) != 0) {
extern int register_xenbus_watch(struct xenbus_watch *watch);
if (register_xenbus_watch(&shutdown_watch))
if (register_xenbus_watch(&bln_watch)) {
if (register_xenbus_watch(&cpu_config_watch)) {
if (register_xenbus_watch(&shutdown_watch))
if (register_xenbus_watch(&sysrq_watch))