## Function: SB-INTROSPECT:WHO-CALLS [![package](https://img.shields.io/badge/Package-SB--INTROSPECT-5f9ea0.svg?style=social&colorA=999999)](../) [![type](https://img.shields.io/badge/Type-Function-5f9ea0.svg?style=social&colorA=999999)](../#function) [![github](https://img.shields.io/badge/GitHub-View_the_source-5f9ea0.svg?style=social&colorA=999999&logo=github)](https://github.com/sbcl/sbcl/blob/master/contrib/sb-introspect/introspect.lisp/) > Use the xref facility to search for source locations where the > global function named FUNCTION-NAME is called. Returns a list of > function name, definition-source pairs. ### Lambda list ```cl (sb-introspect::function-name) ```