lo_create
test->ct_ops->lo_create(test->ct_desc, &prim);
void (*lo_create)(const char *, void **);
.lo_create = clock_cond_static_create,
.lo_create = clock_cond_create,
.lo_create = clock_mutex_create,
.lo_create = clock_rwlock_create,
.lo_create = clock_sem_create,
VOPNAME_CREATE, { .vop_create = lo_create },