Change detection in hierarchically structured information
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
Understanding source code evolution using abstract syntax tree matching
MSR '05 Proceedings of the 2005 international workshop on Mining software repositories
Type-safe modular hash-consing
Proceedings of the 2006 workshop on ML
Identifying Refactorings from Source-Code Changes
ASE '06 Proceedings of the 21st IEEE/ACM International Conference on Automated Software Engineering
Understanding collateral evolution in Linux device drivers
Proceedings of the 1st ACM SIGOPS/EuroSys European Conference on Computer Systems 2006
Automatic Inference of Structural Changes for Matching across Program Versions
ICSE '07 Proceedings of the 29th international conference on Software Engineering
Documenting and automating collateral evolutions in linux device drivers
Proceedings of the 3rd ACM SIGOPS/EuroSys European Conference on Computer Systems 2008
Refactoring references for library migration
Proceedings of the ACM international conference on Object oriented programming systems languages and applications
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A key issue in maintaining Linux device drivers is the need to keep them up to date with respect to evolutions in Linux internal libraries. Currently, there is little tool support for performing and documenting such changes.In this paper we present a tool, spdiff, that identifies common changes made in a set of files and their updated versions, and extracts a generic patch performing those changes. Library developers can use our tool to extract a generic patch based on the result of manually updating a few typical driver files, and then apply this generic patch to other drivers. Driver developers can use it to extract an abstract representation of the set of changes that others have made.Our experiments on recent changes in Linux show that the inferred generic patches are more concise than the corresponding patches found in commits to the Linux source tree while being safe with respect to the changes performed in the provided driver files.