为了缩短 Linux 开发和测试的时间，提高开发效率。详细分析了Linux 可加载内核模块机制即LKM(Loadable Kernel Module)的工作原理、实现细节和LKM 机制中的关键技术，总结了在实际开发中针对最新内核稳定版本2.6 编写内核模块的方法和需要注意的问题。在Linux操作系统环境下应用LKM 对零拷贝原理进行了实现。在Linux 开发和研究中应用LKM 可以大大加快开发速度-In order to shorten the Linux development and testing time and improve development efficiency. Detailed analysis of the mechanism of Linux loadable kernel module that LKM (Loadable Kernel Module) working principle, implementation details and the key technology LKM mechanism, summarized in the actual development of the kernel for the latest stable version of the 2.6 kernel module prepared by the methods and needs attention. Application of the Linux operating system environment LKM on the principle of achieving zero-copy. In the Linux application development and research can greatly speed up the development pace of LKM