From: Ben Collins <ben.collins@ubuntu.com>
To: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Ben Collins <bcollins@ubuntu.com>,
davej@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 03/15] powernow-k7: Work when kernel is compiled for SMP
Date: Wed, 04 Jan 2006 17:32:06 -0500 [thread overview]
Message-ID: <1136413927.4430.35.camel@grayson> (raw)
In-Reply-To: <20060104222618.GA24376@isilmar.linta.de>
On Wed, 2006-01-04 at 23:26 +0100, Dominik Brodowski wrote:
> On Wed, Jan 04, 2006 at 04:59:31PM -0500, Ben Collins wrote:
> > On a UP system with SMP compiled kernel, the powernow-k7 module would not
> > initialize (returned -ENODEV). Not sure why policy->cpu != 0 for UP
> >
> > Signed-off-by: Ben Collins <bcollins@ubuntu.com>
>
> May the smp_processor_id() be != 0 on _true_ UP on SMP? What happens if (using
> virtual CPU hotplug) the module is modprobe'd with one CPU online, and then
> the second CPU becomes online later?
That's why there is num_possible_cpus() checked aswell. That's supposed
to report possible hotplug cpu's, even if not plugged, correct?
--
Ben Collins <ben.collins@ubuntu.com>
Developer
Ubuntu Linux
next prev parent reply other threads:[~2006-01-04 22:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-04 21:59 [PATCH 03/15] powernow-k7: Work when kernel is compiled for SMP Ben Collins
2006-01-04 22:26 ` Dominik Brodowski
2006-01-04 22:32 ` Ben Collins [this message]
2006-01-05 22:32 ` Dominik Brodowski
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