This paper probes into the method of designing device driver under Linux, with emphasis on module, interruption mechanism, DMA, and presents method to avoid resource dead lock and realize cooperation and mutex among processes.
文章从实例出发，详细的介绍了Linux环境下设备驱动程序的设计的方法和技巧。 重点介绍了设备驱动程序开发过程中涉及到的module机制、中断机制、DMA传送等问题，提出了避免资源死锁，实现进程间合作和互斥的方法。
参考来源 - 嵌入式Linux的研究及其设备驱动程序的开发The core principle, characteristic, task scheduling strategy, real-time thread, interrupt mechanism, communication mechanism between threads of RTLinux OS are researched.
研究了RTLinux操作系统的内核原理、特征、任务调度策略、实时线程、以及中断机制和线程间的通信机制。
参考来源 - 基于RTLinux的Open CNC系统平台研究及应用·2,447,543篇论文数据，部分数据来源于NoteExpress
最后，介绍了软中断机制及其实现。
Finally, the mechanism and the implementation of soft interrupt are introduced.
这种中断机制不是强制性的，不是所有的JOLAP提供程序都支持。
This interruption mechanism is not mandatory and may not be supported by all JOLAP providers.
为满足测控任务对网络通讯的实时性要求，通讯过程中使用了中断机制。
The communication process also relates to interruption mechanism to meet the real-time requirement of the measurement and control task.
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