I like function tracing -- pick an operation you're interested in, get a line printed with the name of each function that gets entered in order. Here's an exam

I like function tracing -- pick an operation you're interested in, get a line printed with the name of each function that gets entered in order. Here's an example from the kernel: http://thread.gmane.org/gmane.linux.kernel.mmc/4248/focus=4400 http://thread.gmane.org/gmane.linux.kernel.mmc/4248/focus=44...