Re: [LSF/MM/BPF TOPIC] BPF libarena Development and

[Cong Wang <xiyou.wangcong@gmail.com>]

On Tue, Feb 03, 2026 at 12:21:43PM -0500, Emil Tsalapatis wrote:
> Hello everyone,
> 
>     I'd like to propose a session on the BPF libarena library under
> development[1]. The details on how this library should be developed, 
> managed, and provided to users are still open. The session would let 
> us discuss those topics, along with sharing an overview of libarena 
> itself.
> 
> libarena is a collection of arena-based code that will live in 
> tools/testing/selftests/bpf/libarena and will provide a runtime 
> for arena-based programs. The library currently includes memory 
> allocators and an ASAN runtime for BPF arena memory, and will
> be expanded with arena-based implementations of data structures
> for development like B-trees, RB-trees, and heaps. The end result
> will look similar to the BPF arena library used by sched_ext[2].
> Users will statically link the arena library into their code at 
> compile time.

Interesting, I have prototyped similar concepts in KernelScript [1],
the biggest difference is that they are built into the language [2], like
how Python handles data structures naturally.

1. https://github.com/multikernel/kernelscript
2. https://github.com/multikernel/kernelscript/tree/linked_list

Hope this helps.

Regards,
Cong Wang