TIMEOUT_INITIALIZED
to->to_flags = flags | TIMEOUT_INITIALIZED;
KASSERT(ISSET(new->to_flags, TIMEOUT_INITIALIZED));
KASSERT(ISSET(to->to_flags, TIMEOUT_INITIALIZED));
#define timeout_initialized(to) ((to)->to_flags & TIMEOUT_INITIALIZED)
.to_flags = (_flags) | TIMEOUT_INITIALIZED, \