RCU Usage In the Linux Kernel

Q3 Computer Science

Operating Systems Review (ACM) Pub Date : 2020-08-31 DOI:10.1145/3421473.3421481

P. McKenney, Joel Fernandes, Silas Boyd-Wickizer, J. Walpole

引用次数: 7

Abstract

Read-copy update (RCU) is a scalable high-performance synchronization mechanism implemented in the Linux kernel. RCU's novel properties include support for concurrent forward progress for readers and writers as well as highly optimized inter-CPU synchronization. RCU was introduced into the Linux kernel eighteen years ago and most subsystems now use RCU. This paper discusses the requirements that drove the development of RCU, the design and API of the Linux RCU implementation, and how kernel developers apply RCU.

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Linux内核中的RCU使用情况

读拷贝更新（RCU）是在Linux内核中实现的一种可扩展的高性能同步机制。RCU的新颖特性包括支持读写器的并发前向进程，以及高度优化的CPU间同步。RCU在18年前被引入Linux内核，现在大多数子系统都使用RCU。本文讨论了驱动RCU开发的需求，Linux RCU实现的设计和API，以及内核开发人员如何应用RCU。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Operating Systems Review (ACM) Computer Science-Computer Networks and Communications

CiteScore

2.80

自引率

0.00%

发文量

期刊介绍： Operating Systems Review (OSR) is a publication of the ACM Special Interest Group on Operating Systems (SIGOPS), whose scope of interest includes: computer operating systems and architecture for multiprogramming, multiprocessing, and time sharing; resource management; evaluation and simulation; reliability, integrity, and security of data; communications among computing processors; and computer system modeling and analysis.