什么是CPU软锁？

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软锁是指一个任务或内核线程使用CPU，并且在规定时间内不释放CPU资源的一种现象。

软锁背后的技术原因包括CPU中断以及nmi-watchdog内核线程。系统中每个在线的CPU，内核会为其创建一个watchdog进程，并且此进程被调度的优先级是最高的。此进程每秒被唤醒一次，抢占CPU，并获取当�...

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