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Date: Sat, 9 Oct 2004 05:06:01 -0400
From: Brian Fundakowski Feldman <green@FreeBSD.org>
To: Don Lewis <truckman@FreeBSD.org>
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Subject: Re: cvs commit: src/sys/kern subr_witness.c
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On Sat, Oct 09, 2004 at 01:25:39AM -0700, Don Lewis wrote:
> On  9 Oct, Brian Feldman wrote:
> > green       2004-10-09 08:16:37 UTC
> > 
> >   FreeBSD src repository
> > 
> >   Modified files:
> >     sys/kern             subr_witness.c 
> >   Log:
> >   Don't "implicitly order all sleep locks before spin locks" in witness
> >   when the spin lock in question isn't -- it's the critical_enter() that
> >   KDB set.  No more panic in DDB for console -> syscons -> tty -> knote
> >   operations.
> 
> If I'm understanding this correctly, calling knote sounds like the wrong
> thing to do in this situation ...

There's previous little that can be done "right," from within DDB....

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\