task_kstat_t
task_kstat_t *ktk = ksp->ks_data;
task_kstat_t *ktk;
sizeof (task_kstat_t) / sizeof (kstat_named_t),
ktk = ksp->ks_data = kmem_alloc(sizeof (task_kstat_t), KM_SLEEP);
kmem_free(data, sizeof (task_kstat_t));