From: Dominik Brodowski <linux@dominikbrodowski.de>
To: Pavel Machek <pavel@ucw.cz>
Cc: Bruno Ducrot <ducrot@poupinou.org>,
Cpufreq mailing list <cpufreq@www.linux.org.uk>
Subject: Re: My latest powernow-k8.c
Date: Fri, 19 Mar 2004 15:33:06 +0100 [thread overview]
Message-ID: <20040319143306.GA7246@dominikbrodowski.de> (raw)
In-Reply-To: <20040319135605.GD248@elf.ucw.cz>
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On Fri, Mar 19, 2004 at 02:56:05PM +0100, Pavel Machek wrote:
> Hi!
> > > > > Attached are my latest .c and .h ... I am sending the whole files rather than patches, as a check that I did not miss a patch that you wanted. Mail here has been a little less reliable that one might wish for.
> > > > >
> > > > > I added back in the cpu number in the dprintks to aid MP debugging. I fixed a PSB problem where the battery limits were getting lost. And, I tweaked the smp processor init stuff as discussed in emails.
> > > > >
> > > > > I am still thinking about the FIXME where Dominik asked for more validity checking. So, that is still FIXME.
> > > >
> > > > Huh, now this is strange:
> > > >
> > > > root@amd:~# echo "0%88%88%powersave" > /proc/cpufreq
> > > > root@amd:~# cat /proc/cpufreq
> > > > minimum CPU frequency - maximum CPU frequency - policy
> > > > CPU 0 1584000 kHz ( 88 %) - 1600000 kHz ( 88 %) - powersave
> > > > root@amd:~#
> >
> > Why is this strange? Can you elaborate, please?
>
> CPU can not do 1.584MHz. Why did it round 88% down to 1.584GHz but
> maximum frequency 1.6GHz? Kernel 2.6.
1.8 GHz * 0.88 = 1584000 kHz -- min and max are set to this value at first.
As there is no state the CPU can be set to in between min and max, the max
value is increased to the next higher state [see
cpufreq_frequency_table_verify()] So there's nothing strange here, IMHO.
Dominik
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next prev parent reply other threads:[~2004-03-19 14:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <99F2150714F93F448942F9A9F112634C1163C59A@txexmtae.amd.com>
2004-03-19 11:24 ` My latest powernow-k8.c Pavel Machek
2004-03-19 12:41 ` Bruno Ducrot
2004-03-19 13:35 ` Dominik Brodowski
2004-03-19 13:56 ` Pavel Machek
2004-03-19 14:33 ` Dominik Brodowski [this message]
2004-03-19 15:52 ` Bruno Ducrot
2004-03-20 8:28 ` Dominik Brodowski
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