kthread_is_per_cpu
bool kthread_is_per_cpu(struct task_struct *k);
if (WARN_ON_ONCE(kthread_is_per_cpu(current)))
kthread_is_per_cpu(k->task))) {
if (kthread_is_per_cpu(p))
if (kthread_is_per_cpu(push_task) ||
if (kthread_is_per_cpu(p))