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Re: dtrace/systemtap options

From: olafBuddenhagen
Subject: Re: dtrace/systemtap options
Date: Fri, 30 May 2008 05:40:04 +0200
User-agent: Mutt/1.5.17+20080114 (2008-01-14)

Hi again,

On Fri, May 23, 2008 at 04:20:12PM -0400, Andrei Barbu wrote:

> 2 This one is ugly, and I'd rather not do it. It involves adding
> module loading support to do the same thing that SystemTap does on
> Linux. Compile code, add a prelude so that it becomes a regular
> module, load it in and use kprobes to call it.

I don't get this: Why implement module loading just for this? Can't
SystemTap be just statically linked in gnumach? Or are the actual test
functions compiled and loaded as modules in SystemTap?...

In the latter case, I agree that it would be a bit ugly. It may still be
the preferable solution though, if the other option of running it is
user space involves much more effort and/or risk...


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