Linux抢占式内核的研究与实现  

Research and implementation on preemptive kernel of Linux

作　　者：厉海燕[1] 李新明[1] 

机构地区：[1]装备指挥技术学院,北京101416

出　　处：《计算机工程与设计》2005年第9期2395-2399,共5页Computer Engineering and Design

摘　　要：随着Linux操作系统的成功应用,尤其是在嵌入式实时应用领域,Linux实时性能的提高成为一个很重要的因素。系统核心的可抢占性是决定系统实时性能的一个重要条件,而Linux的核心是不可抢占的,通过将Linux的内核改造为可抢占式内核,可缩短系统的响应延时,提高Linux的实时性。分析了几种实现抢占式内核的方法,介绍了一种实现Linux可抢占式内核的方法,并对其实现细节进行了详细的说明。With the successful application of Linux operating system, especially in embedded real-time system fields, the improvement of Linux real-time performance becomes an important factor. Preemptive kernel is a decisive condition of a system＇s real-time performance. But the kernel of Linux is not preemptive. Through modification of Linux source codes, preemptive Linux kernel can reduce time delayed of system response, and improve real-time performance of Linux. Several methods to imply preemptive kernel were analyzed A method to implement a preemptive kernel of Linux was discussed and the implementation was explains in detail.

关 键 词：抢占 调度 锁 实时 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]