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From: John Baldwin <jhb@freebsd.org>
To: "Attilio Rao" <attilio@freebsd.org>
Date: Mon, 11 Feb 2008 19:16:19 -0500
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Cc: Dag-Erling =?utf-8?q?Sm=C3=B8rgrav?= <des@des.no>, arch@freebsd.org
Subject: Re: [PATCH] Automatic kernel version module dependencies..
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On Monday 11 February 2008 03:48:14 pm Attilio Rao wrote:
> 2008/2/11, John Baldwin <jhb@freebsd.org>:
> > On Sunday 10 February 2008 06:24:37 am Dag-Erling Sm=C3=B8rgrav wrote:
> >  > "M. Warner Losh" <imp@bsdimp.com> writes:
> >  > > Dag-Erling_Sm=C3=B8rgrav <des@des.no> writes:
> >  > > > ...provided they were built from the same config...  I think
> >  > > > MUTEX_PROFILING has been fixed, but there may still be cases whe=
re
> >  > > > the ABI changes dependening on kernel options.
> >  > > These are usually well documented.  But I can't find any in the
> >  > > current doc set.  Maybe you could point me at options that do this=
 so
> >  > > we can document them (and maybe add a #warning when compiling with
> >  > > them)?
> >  >
> >  > Here's one I found: DEBUG_LOCKS changes the size of struct lock, whi=
ch
> >  > changes the size and layout of struct vnode.
> >
> >
> > Yes, DEBUG_LOCKS, MUTEX_PROFILING (O.B.E), and PAE are the ones I know =
of. =20
We
> >  could employ a similar strategy for these btw.  For example, you could=
 do
> >  this for PAE:
>=20
> LOCK_PROFILING also, but only on 7.0.

Ah, ok, I had checked on HEAD.

=2D-=20
John Baldwin