Re: How to know address of invoked function

[domenico dot dileo at unina dot it]

Thank you Mark, you were very helpful
Just to know a bit more on systemtap, does it make sense what I was   
trying to do?
I will also take a look at addr() implementation...

Quoting Mark Wielaard <mjw@redhat.com>:

> On Tue, 2012-08-07 at 13:10 +0200, domenico.dileo@unina.it wrote:
> > With the following code
> > probe kernel.function("*mm/*.c").call{
> >   printf ("%s %s",thread_indent(1), probefunc())
> >
> > }
> > I can trace all the functions called by mm.
> > The resulting output is something like:
> > ->do_obj_copy
> >   ->kmalloc
> > ...
> > I would like to have for each called function also it is address (
> > the address stored in the PC) for instance,
> > -> do_obj_copy c091379
>
> The addr() function will give you the PC address of the probe point (in
> kernel space, use uaddr() for the user address):
> http://sourceware.org/systemtap/tapsets/API-addr.html
>
> So try something like:
>
> probe kernel.function("*@mm/*.c").call {
> printf ("%s %s@%p",thread_indent(1), probefunc(), addr())
> }
>
> Cheers,
>
> Mark



Domenico Di Leo, PhD student, Universitï degli Studi di Napoli Federico II
Ph:     +39 081 676770
Fax:    +39 081 676574
Web: http://wpage.unina.it/domenico.dileo