Symbol: at_exit
sys/dev/misc/syscons/scmouse.c
910
at_exit(sc_mouse_exit1);
sys/sys/systm.h
395
int at_exit (exitlist_fn function);
sys/vfs/procfs/procfs_vfsops.c
73
if (mp->mnt_vfc->vfc_refcount == 1 && (error = at_exit(procfs_exit))) {