From: "Daniel P. Berrange" <berrange@redhat.com>
To: Sebastien Decugis <sebastien.decugis@ext.bull.net>
Cc: SystemTAP <systemtap@sources.redhat.com>
Subject: Re: Bug and question
Date: Wed, 12 Oct 2005 10:09:00 -0000 [thread overview]
Message-ID: <20051012100911.GB7552@redhat.com> (raw)
In-Reply-To: <1129110154.7277.49.camel@decugiss.frec.bull.fr>
On Wed, Oct 12, 2005 at 11:42:33AM +0200, Sebastien Decugis wrote:
> I want to access a structure field of a parameter which is a char table,
> and I want to display it as a string. Is it possible? Here is what I
> want to do:
Yes, but you need to use either 'user_string' or 'kernel_string' functions
to convert into the systemtap runtime string object. If you don't do this
you'll just get back the pointer as a long.
> probe kernel.function("dev_put") {
> print("device name: " . $dev->name . "\n")
> }
Try changing it to look like:
probe kernel.function("dev_put") {
print("device name: " . kernel_string($dev->name) . "\n")
}
Regards,
Dan.
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next prev parent reply other threads:[~2005-10-12 10:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-12 9:41 Sebastien Decugis
2005-10-12 10:09 ` Daniel P. Berrange [this message]
2005-10-12 11:06 ` Sebastien Decugis
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