id_t              120 sys/resource.h int	getpriority(int, id_t);
id_t              123 sys/resource.h int	setpriority(int, id_t, int);
id_t              418 sys/syscallargs.h 	syscallarg(id_t) who;
id_t              442 sys/syscallargs.h 	syscallarg(id_t) who;