global tracing

probe @PYTHON_SYSTEMTAP_PROBE@("function__entry")
{
    funcname = user_string($arg2);

    if (funcname == "start") {
        tracing = 1;
    }
}

probe @PYTHON_SYSTEMTAP_PROBE@("gc__start"),
      @PYTHON_SYSTEMTAP_PROBE@("gc__done")
{
    if (tracing) {
        printf("%d\t%s:%ld\n", gettimeofday_us(), $$name, $arg1);
    }
}

probe @PYTHON_SYSTEMTAP_PROBE@("function__return")
{
    funcname = user_string($arg2);

    if (funcname == "start") {
        tracing = 0;
    }
}