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Date: Tue, 29 May 2007 15:09:00 -0000
From: David Smith <dsmith@redhat.com>
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To: John Liang <jliang@ibrix.com>
CC: "'Systemtap List'" <systemtap@sources.redhat.com>
Subject: Re: Target variable that was defined by our own kernel module
References: <46531C6E.3010502@redhat.com> <20070528182305.GD7882@Krystal> <465C298E.5040808@redhat.com> <000b01c7a1fb$bf426050$800101df@ibrixfaf958395>
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John Liang wrote:
> HI There,
> 
> For the following systemtap script, I run into a compiler error:
> 
> probe module("mymodule").("foobar"){
>      if($myparm)
>          dosomething
> }

That first line should be:

    probe module("mymodule").function("foobar"){

> It looks if $myparm is a data structure defined in Linux Kernel,
> It would compile and run without problem; but if it is a defined
> by my own module, then it gave me a "unresolved symbol error for
> $myparm". 
> 
> Any suggestions to solve this?

Make sure the debug information is installed for your kernel module.

-- 
David Smith
dsmith@redhat.com
Red Hat
http://www.redhat.com
256.217.0141 (direct)
256.837.0057 (fax)