[$] A thorough introduction to eBPF

In his linux.conf.au2017 talk [YouTube] on the eBPF in-kernel virtual machine, Brendan Greggproclaimed that "super powers have finally come to Linux". GettingeBPF to that point has been a long road of evolution and design. WhileeBPF was originally used for network packet filtering, it turns outthat running user-space code inside a sanity-checking virtual machineis a powerful tool for kernel developers and production engineers.Over time, new eBPF users have appeared to take advantage of itsperformance and convenience. This article explains how eBPF evolvedhow it works, and how it is used in the kernel.