* Re: p4-clockmod help
[not found] ` <200512100652.41406.pat@patdouble.com>
@ 2005-12-12 0:29 ` Nigel Cunningham
0 siblings, 0 replies; only message in thread
From: Nigel Cunningham @ 2005-12-12 0:29 UTC (permalink / raw)
To: Pat Double, Cpu-freq mailing list; +Cc: Suspend2 Devel List
Hi again Pat et al.
On Sat, 2005-12-10 at 22:52, Pat Double wrote:
> On Friday 09 December 2005 19:14, Bojan Smojver wrote:
> > On Fri, 2005-12-09 at 11:07 -0600, Pat Double wrote:
> > > Has anyone been successful resuming with the p4-clockmod module loaded,
> > > or compiled in?
> >
> > It works on my notebook with FC Rawhide kernels and suspend2.
>
> It does not work well here. I believe it is because I have a P4 HT, the SMP
> part is causing problems. I get a BUG sometime after it starts writing the
> image. Normally it happens while writing the image but can also happen during
> the atomic copy. I tried to disable calls to change the freq during suspend
> but I do not even get the suspend function called until the atomic copy, so
> the bug happens before then. I do not know how to fix this.
>
> Nigel, any help?
>
> I get a BUG at p4-clockmod.c, line 142:
> BUG_ON(smp_processor_id() != i);
>
> The error is an invalid operand 0000
>
> Also, writing the image becomes VERY slow with p4-clockmod loaded. I do not
> have any governer loaded except performance.
Since any fix should come from the cpufreq guys, and they'll understand
the issue better than me, I want to refer the problem to them...
Cqufreq guys, I've only had a superficial look at this, but this BUG_ON
appears to be triggering because hot unplugging of cpu1 is not being
taken into account. Can you please help?
Regards,
Nigel
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