嵌入式Linux实时技术改进与实现

对嵌入式Linux进行实时性改进是嵌入式操作系统领域的一个研究热点。本文从实现低延迟、中断线程化、用Mutex取代spinlock、优先级继承和死锁检测、等待队列优先级化、大内核锁可抢占等方面给出了改善系统实时性能的实现方法，拓展了嵌入式实时系统的应用范围。

Improvement and realization of the Real-time technology of Embedded Linux

It has been a hotspot in the filed of embedded operation system to improve the embedded Linux performance to satisfy the real-time requirement. The article gives rise to some methods to improve the real-time performance of Linux , such as realizing low delay, Interrupt Threading,Replacing Spinlock by Mutex,Priority Inheritance,Deadlock Checking,waiting queue priotity,Big Kernel Lock Preemptible, and so on.Through these ways ,the application scope of the embedded Real-time operation system is expanded.