Profiler and Runtime Reporter for eBPF programs (brr)

brr is a developer tool that profiles eBPF programs by tracing probe-to-kernel activity and interactions, providing runtime reports to help performance engineers and kernel developers identify bottlenecks and optimize eBPF code. It is interesting because it fills a gap in eBPF observability, making it easier to understand the real-time behavior and overhead of eBPF programs themselves.