Edit File: scf.stp
#!/usr/bin/stap # scf.stp # A reimplementation of user script:smp_call_function example given at OLS 2005 # in the current language. global traces probe begin { print("Starting probe, type control-c to stop.\n") } probe kernel.function("smp_call_function") { traces[pid(), pexecname(), backtrace()] ++ } probe end { foreach ([pid, name, stack] in traces-) { # sort by frequency encountered printf ("traces[%d,%s,\n", pid, name) print_syms (stack) printf ("] = %d\n", traces[pid, name, stack]); } }