Pinning and Managing BPF Maps in eBPF

This chapter explores the concept of pinning BPF maps within the Linux kernel, emphasizing their role in resource management and accessibility for BPF programs. It discusses the advantages of eBPF over traditional kernel programming methods, including its stable API and enhanced debugging capabilities, particularly in containerized environments. Furthermore, the chapter illustrates how eBPF facilitates seamless program upgrades while maintaining crucial state information, showcasing its potential to improve system reliability and security.