unbound_pwq
if (wqattrs_equal(target_attrs, unbound_pwq(wq, cpu)->pool->attrs))
pwq = unbound_pwq(wq, -1);
put_pwq_unlocked(unbound_pwq(wq, cpu));
put_pwq_unlocked(unbound_pwq(wq, -1));
return unbound_pwq(wq, -1)->pool->attrs->__pod_cpumask;