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Whitepaper: Categorization of Common Coupling and Its Application to the Maintainability of the Linux Kernel

by Vanderbilt UniversityJan 01, 2008

This paper presents a refined categorization of common (global) coupling based on definitions and uses between kernel and nonkernel modules and applies the categorization to a case study. The relative risk of these dependencies partially depends on the specific definition-use relationships. The paper also categorized each coupling in terms of the definition-use relationships. Results show that the Linux kernel contains a large number of common couplings of all types, raising a concern about the