v2.2.0 / 2023-07-25

The best release yet! Syscalls, per-cpu maps, running with no elevated capabilities at runtime — it has it all.

• Added capability dropping and documented necessary capabilities (#231)
• Added support for systemd socket activation (#237)
• Added tracepoints and empty probes benchmark (#236)
• Added support for reading percpu maps (#226)
• Added support for XDP attachment with an example (#215, thanks @huseyinsaatci)
• Added syscall decoder with an example (#214, thanks @huseyinsaatci)
• Added udp receive packet drops example (#213, #229)
• Added kfree_skb example (#233, #234)
• Simplified oomkill example (#230)
• Replaced tracepoints with tp_btf in examples to remove the need for tracefs (#227)
• Reduced libbpf logging unless --debug is enabled (#216)
• Allowed suppressing timestamps in logs with --log.no-timestamps (#239)
• Added clang-format config to enforce formatting on C code (#222)
• Formatted examples uniformly (#228)
• Added default build goals to Makefiles (#225)
• Updated ubuntu in CI from 20.04 to 22.04 (#223)
• Updated vmlinux.h from 5.15.0-25 to 6.3.0-7 and generation instructions (#224)
• Updated dependencies to latest (#197, #202, #203, #204, #205, #206, #207, #210, #211, #212, #218, #238)