[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <87ljoriwcw.fsf@tac.ki.iif.hu>
Date: Wed, 20 May 2009 18:15:43 +0200
From: Ferenc Wagner <wferi@...f.hu>
To: Corey Minyard <minyard@....org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
openipmi-developer@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, dann frazier <dannf@...com>
Subject: Re: [Openipmi-developer] modprobe ipmi_si hangs under 2.6.30-rc5
Corey Minyard <minyard@....org> writes:
> I know what is happening now. Can you try the attached patch? I'm
> disabling the requeue and discarding the message when an IPMB message
> is received before everything is initialized. If you don't, the code
> will not deliver any messages because something is already in the
> queue.
Yep, that fixed it, modprobe runs through now!
> Ferenc Wagner wrote:
>
>> My concern is that it does something too often, not letting the CPU
>> enter deep sleep states, perhaps. Or is that also an artifact of
>> debugging?
>
> No, it's an artifact of a lousy hardware interface. Very few IPMI
> interfaces support interrupts, so they have to be polled :(.
I'd say this isn't an artifact but the sad truth itself. Just out of
interest, how often does the driver wake up to check the inteface?
--
Thanks,
Feri.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists