3.2.5. Documentation

The documentation for ftrace can be found in the kernel Documentation directory:

     Documentation/trace/ftrace.txt
            

The documentation for the trace event subsystem can also be found in the kernel Documentation directory:

     Documentation/trace/events.txt
            

There are a nice series of articles on using ftrace and trace-cmd at LWN:

There's more detailed documentation kernelshark usage here: KernelShark

An amusing yet useful README (a tracing mini-HOWTO) can be found in /sys/kernel/debug/tracing/README.