Put_cpu — re-enables preemption .

put_cpu——重新激活preemption 。

This drives the wakeup preemption.

这将驱动唤醒式(wakeup)抢占。

This drives the running preemption.

这将驱动运行时(running)抢占。

Preemption is an important right in civil law.

优先购买权是民法上的一项重要权利。

Preemption is an important system in Civil law.

优先购买权是民法中一项重要的制度。