Tracing in Linux today has become quite main stream. Linux has come a long way from when the first attempt to insert tracing infrastructure and tools in the kernel tree was made several years ago. But where are we now? While existing tools are being refined and more sophisticated features are added to them, there are still fundamental areas where improvement is happening and exciting new approaches are surfacing, such as using the BPF (Berkeley Packet Filtering) infrastructure for tracing purposes, for instance. This talk is a new and revised version of my previous tracing talk with specific emphasis on new developments as opposed to providing an overview of the field.