Date: Wed, 29 Oct 2003 17:22:28 +0100 From: Andrea Campi <andrea@webcom.it> To: John Baldwin <jhb@FreeBSD.org> Cc: Nate Lawson <nate@root.org> Subject: Re: cvs commit: src/sys/dev/acpica acpi.c Message-ID: <20031029162228.GA720@webcom.it> In-Reply-To: <XFMail.20031022164015.jhb@FreeBSD.org> References: <20031022132436.V59735@root.org> <XFMail.20031022164015.jhb@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Oct 22, 2003 at 04:40:15PM -0400, John Baldwin wrote:
> >> By the way, any ideas on why my laptop gets an interrupt storm when it
> >> resumes from S1 and any ideas on how to fix that?
> >
> > No idea at the moment. What interrupt and who's on it?
>
> No idea really. I showed it to you at BSDCon when I tried to suspend
> and you mentioned the Linux guys had seen something similar. It seems
> to be related to the 0619 import btw.
FYI: I think I'm seeing this on my Thinkpad 570E on reboot. I get an
interrupt storm on reboot; it's on irq 11, which is what gets assigned
to most devices. However, I've disabled all devices which could possibly
use it, and the only only one left is cbb. I haven't been able yet to
determine when this started, as I noticed it only recently. I tried
comparing a verbose boot after cold boot (working) vs warm (non working)
and they looked the same to a visual inspection, so it doesn't seem to
be a case of irq misrouting.
The boot stops after printing: Mounting root from ufs:/dev/ad2s2a.
Breaking into DDB and using the new 'show intrcnt' command shows I am
indeed getting a lot (thousands per second) interrupt 11. However,
setting a breakpoint in cbb_intr and tracing through it shows that
cbb_get(sc, CBB_SOCKET_EVENT) is returning 0.
I haven't gotten any further than this for now. With my limited knowledge,
this makes me think that either something else is generating irqs, or
cbb is but cbb_get() is giving a wrong answer. It's not clear to how to
determine this, if anybody has a clue I could use it too.
Bye,
Andrea
--
The three Rs of Microsoft support: Retry, Reboot, Reinstall.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20031029162228.GA720>