Preemptible Kernel 抢先式内核 ; 抢占式内核
preemptible page 先占页
Non-preemptible Unprotected Traffic 非优先的未保护业务流
As of kernel 2.6, the kernel is preemptible.
在内核2.6中，内核是可抢占的。
These changes provide a fully preemptible kernel, threaded interrupt handlers, high-resolution timers, priority inheritance, and robust mutexes.
这些更改提供了完全抢占式内核、线程中断处理程序、高分辨率计时器、优先级继承和健壮的互斥锁（mutex）。
The system is fully preemptible when this function is called. The kernel does no processing, but it passes all parameters directly to the function supplied by you.
当这个函数被调用的时候系统完全可能被抢占，内核没有处理，直接传递参数到你提供的函数。
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