Post Syndicated from original https://lwn.net/Articles/906660/

Kernel code can, at times, be quite inward looking; it often refers to
itself. To enable this introspection, the kernel has evolved several
mechanisms for identifying specific locations in the code and carrying out
actions related to those locations. The code-tagging
framework patch set, posted by Suren Baghdasaryan and Kent Overstreet,
is an attempt to replace various ad hoc implementations with a
single framework, and to add some new applications as well.