一种Linux嵌入式系统的中断处理机制

A Mechanism of Linux Embedded System Interrupt Handling

嵌入式Linux以代码开放、价格低廉、功能强大又易于移植的特性正在被广泛应用。Linux一般采用中断的方式来进行内核和设备之间的交互,中断处理机制直接影响到系统的性能。本文首先介绍嵌入式系统一般的中断处理机制,然后详细说明了一种Linux嵌入式系统中断处理机制的实现,通过为每个设备注册一个处理程序,然后编写好中断处理程序,这样做到在中断到达时进行正确的处理。

Embedded Linux to code open, low cost, powerful features and ease of transplants are being widely used. Linux generally interrupted way between the core and equipment interactive, interrupt handling mechanism to directly affect the performance of the system. This paper first introduces the embedded systems in general interrupt handling mechanism, and then elaborate on a Linux embedded system interrupt handling mechanism of the realization by each device to register a process, and then to prepare a good interrupt handling procedures, do so in the interruption arrive at the right time to deal with.