remove_event_hook  186 vm_trace.c         return remove_event_hook(&th->event_hooks, func, data);
remove_event_hook  204 vm_trace.c         return remove_event_hook(&GET_VM()->event_hooks, func, Qundef);
remove_event_hook  210 vm_trace.c         return remove_event_hook(&GET_VM()->event_hooks, func, data);