自愿抢占
Voluntary preemption
以上为机器翻译结果，长、整句建议使用 人工翻译 。
具有RT优先级的调度线程可以一直执行直至阻塞，通过让步自愿放弃控制权，或被具有更高rt优先级的线程抢占。
A dispatched thread with an RT priority is allowed to execute until it blocks, voluntarily relinquishes control by yielding, or is preempted by a thread with a higher RT priority.
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