This article provides an in‑depth analysis of BPF maps—explaining their design principles, core features, various map types with code examples, and the macro expansion process that turns high‑level BCC helpers into native kernel map definitions for cloud‑native observability.
The article explains how to use eBPF tracepoints to monitor and record changes in Linux process capabilities, detailing the kernel data structures, BPF program logic, and user‑space handling needed to debug real‑world capability issues such as tcpdump failures and systemd service launches.
This article walks through creating a first eBPF program using C and Go on Ubuntu 22.04, covering required dependencies, kernel‑space vs user‑space concepts, event selection, BPF map definition, and a tracepoint function that measures per‑process CPU time.
The article explains Android’s emerging eBPF support, detailing how to write, compile, load, attach, and debug BPF programs—including map handling, permission controls, perf‑event reporting, and practical debugging steps—while highlighting its current preliminary status and vast potential for kernel‑level monitoring on mobile devices.
