基于ARM的Linux实时抢占补丁的研究与实现  

Research and Implementation on RT-Preempt Patch of Linux Based on ARM

作　　者：王帅华[1,2] 杨东升[2] 王允森[1,2] 袁晓慧[1,2] 

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院沈阳计算技术研究所,沈阳110168

出　　处：《组合机床与自动化加工技术》2015年第9期1-4,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金："核高基"专项(2012ZX01029-001-002)

摘　　要：随着ARM处理器计算能力的提高,该类型的处理器在嵌入式领域的应用越来越广泛的同时,也得到了数控系统的青睐。结合数控系统的实时加工技术的要求,通过分析和研究Linux实时抢占补丁(RT-Preempt patch)技术,提出了一种基于ARM微处理器TI AM3358的嵌入式实时系统解决方案。在以TI AM3358为硬件平台的Linux嵌入式系统中实现了RT-Preempt的应用,并对任务调度延迟、中断响应延迟和优先级反转问题进行了测试。经试验证明,提出的实时系统解决方案可以满足中档数控系统实时加工的需求。With the increase in computing power of ARM processor, this type of processors are used more and more widely in embedded field, at the same time, they are favored by the CNC system. Through analy-sis and study of the Linux real-time preemption patch （ RT-Preempt） presented a new embedded real-time system solution based on ARM microprocessor TI AM3358 and RT-Preempt. Finally, this paper completed the measurement of task schedule latency, interrupt response delay and priority inversion problem which af-fect the performance of real-time system. The results of the experiment support that the performance of that solution can meet the demand of real-time processing from CNC.

关 键 词：可抢占实时补丁 嵌入式实时系统 嵌入式数控系统 

分 类 号：TH164[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]