Re: updated bootprobe

["Jose R. Santos" <jrs at us dot ibm dot com>]

Bryn M. Reeves wrote:
> Hi all,
>
> Dan Berrange's bootprobe script provides a nice example of systemtap use
> that Dan has kindly agreed can be used in examples, training materials 
> etc.
>
> I've made a slightly modified version to add a GPL header (with Dan's
> permission!) and update the probepoints to use the new tapsets.
>
> If anyone has any comments/corrections for this version, I'd be very
> happy to receive them.
>
> The original, along with the perl post-processing scripts are still
> available here:
>
> http://people.redhat.com/berrange/systemtap/bootprobe/
>
> Thanks,
>
> Bryn.
Hy Bryn,

This looks like a systemcall and fork/exec trace.  Wouldn't it make 
sense to use the tracing facility already available in SystemTap and 
porting the Perl post-processing script to use that instead of rolling 
your own trace format?  I would love to have post-processing scripts 
that do the same thing for the SystemTap trace facility.

Please take a look at "man lket"

Here is the an example of a script that should be able to gather the 
information needed for generating the data that your post-processing 
creates.

====================
#! stap
process_snapshot() {}
addevent.tskdispatch.cpuidle {}
addevent.process {}
addevent.syscall.entry { printf ("%4b", $flags) }
addevent.syscall.exit {}
addevent.tskdispatch.cpuidle {}

=====================

-JRS