kldunload DIAGNOSTIC idea...

[green at freebsd.org (Brian Fundakowski Feldman)]

On Tue, Jul 20, 2004 at 08:20:23PM +0200, Poul-Henning Kamp wrote:
> 
> I'm pulling hair out trying to make it guaranteed safe to unload device
> driver modules, and the major pain here is to make sure there is no
> thread stuck somewhere inside the code.
> 
> That gave me the idea for a simple little DIAGNOSTIC check for kldunload:
> run through the proc/thread table and look for any thread with an
> instruction counter inside the range of pages we are going to unload.
> 
> Any takers ?

You mean any thread with a stack trace that includes an instruction
counter inside those pages, don't you?

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green_(_at_)_FreeBSD_(_dot_)_org                               \  The Power to Serve! \
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