Explore function parameter tracing enhancements using BTF (BPF Type Format) in this Linux Plumbers Conference talk. Dive into recent developments in function graph tracing, including the ability to display return values. Address potential issues with void functions and garbage returns, proposing BTF as a solution. Discover how both function graph and function tracers could leverage BTF to display arguments for all functions. Examine the challenges of efficiently looking up BTF values and translating them into a format suitable for trace file output. Gain insights from speakers Steven Rostedt and Masami Hiramatsu on improving kernel tracing capabilities and enhancing debugging tools for Linux developers.