adding statements in alias definition as epilogue

[Frank Ch. Eigler]

Li Guanglei <guanglei@cn.ibm.com> writes:

> [...] What I want is to let user specify whether to log backtrace in his
> scripts, like the following:
> stap -e "probe addevent.tskdispatch.cpuidle { backtrace=1 } [...]
> But unfortunately, it won't work because "backtrace=1" is added after
> "log_cpuidle_tracedata(HOOKID_TASK_CPUIDLE, backtrace)". [...]

You can have two alias definitions:

probe addevent.tskdispatch.cpuidle.backtrace = addevent.tskdispatch.cpuidle {
  backtrace = 1
}

probe addevent.tskdispatch.cpuidle = .... {
  if (backtrace) log_more ();
}


- FChE