How to probe external modules?

[Wenji Huang]

Wei Li wrote:
> How can I probe an external module, please? The ko is not stripped. But
> reference to it with "module("xxx")" triggered:
> 
>         Pass 1: parsed user script and 25 library script(s) in 120usr/40sys/170real ms.
>         semantic error: cannot find module mymodule debuginfo: No such file or directory
>         semantic error: no match for probe point
>         while: resolving probe point module("mymodule").function("myfunc").return
>         Pass 2: analyzed script: 0 probe(s), 0 function(s), 0 global(s) in 10usr/50sys/51real ms.
>         Pass 2: analysis failed.  Try again with more '-v' (verbose) options.
> 
> My systemtap comes with RHEL 4.4:
> 
>         [root@localhost ~]# stap -V
>         SystemTap translator/driver (version 0.5.8 built 2006-07-14)
>         (Using Red Hat elfutils 0.121 libraries.)
>         Copyright (C) 2005-2006 Red Hat, Inc. and others
>         This is free software; see the source for copying conditions.
> 

Could you try to put .ko under /lib/modules/`uname -r`?

BTW: Upgrade systemtap to get better features.

Regards,
Wenji