From owner-freebsd-arch  Thu Jan 18  5: 9:52 2001
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From: Soren Schmidt <sos@freebsd.dk>
Message-Id: <200101181309.OAA84777@freebsd.dk>
Subject: Re: HEADS-UP: await/asleep removal imminent
In-Reply-To: <200101181205.f0IC5rK13062@mobile.wemm.org> from Peter Wemm at "Jan 18, 2001 04:05:53 am"
To: peter@netplex.com.au (Peter Wemm)
Date: Thu, 18 Jan 2001 14:09:21 +0100 (CET)
Cc: jhb@FreeBSD.ORG (John Baldwin),
	bright@wintelcom.net (Alfred Perlstein), current@FreeBSD.ORG,
	arch@FreeBSD.ORG, rjesup@wgate.com
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It seems Peter Wemm wrote:
> 
> Hmm.  with the mp_machdep.c fix committed, that leaves the only other
> significant difference being the re-enable of HLT when a cpu goes idle
> in i386/i386/machdep.c.

That still lockups, tried a freshly checked out sys...

> The refcount.[ch] stuff is not relevant to this problem.
> 
> The kern/subr_prf.c change doesn't *appear* to be a likely candidate,
> unless you are printing lots of console messages during the buildworld..
> 
> The kern/vfs_aio.c are not relevant as VFS_AIO is not in GENERIC.
> 
> The rest are comments, mtx_assert()'s or DDB activation related.
> 
> Soren, can you retest a buildworld with the currently committed kernel
> with no other changes?  Let us see if the forward_signal() stuff is the
> culprit, and if not, try adding just the i386/i386/machdep.c patch to HLT
> the idle CPU.  (if *that* makes a difference then we have got trouble!)

I'll try adding the forward_signal stuff see if that helps...

-Søren


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