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grafrotz
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PostPosted: Mon Aug 03, 2009 9:20 am    Post subject: Copy&Waste Reply with quote

something went wrong with the copy&paste. sorry.

here is the file:
https://grafrotz.dyndns.org/public/powernow-patch-2.6.30.3-GRAFROTZ.patch

make sure, the sym-link "linux" points to the right kernel-source-directory:
cd /usr/src/linux/arch/x86/kernel/cpu/cpufreq

and make sure you patch the original powernow-k8.c . this file is the same in 2.6.30.3 and 2.6.30.4.
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grafrotz
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PostPosted: Tue Aug 04, 2009 11:26 am    Post subject: possible values for mV Reply with quote

with the formula

mV=1550-(VID*25)
<=>
VID=(1550-mV)/25

i get:

VID mV
6 1400
7 1375
8 1350
9 1325
a 1300
b 1275
c 1250
d 1225
e 1200
f 1175
10 1150
11 1125
12 1100
13 1075
14 1050
15 1025
16 1000
17 975

my AMD X2 5600+ 65nm, 65W, 2,9GHz works good with the following values:

Code:

append="powernow-k8.freq_list=2900,2800,2600,2400,2200,2000,1000 powernow-k8.vcore_list=1200,1175,1125,1100,1075,1025,1000"


somebody know, how to test the stability in a good way?
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new_nOOb
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PostPosted: Tue Aug 04, 2009 11:31 am    Post subject: Reply with quote

Dank der Patch ging super.als stabilitätstest eignet sich cpuburn oder kernel backen
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abulak
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PostPosted: Wed Aug 05, 2009 9:35 pm    Post subject: Reply with quote

Grafrotz it worked, thank you ;-)

i tested my voltages using sci-mathematics/gimps (Great Internet Merssene Prime Search)

command line utility with Benchmarking and Torture test
i don't know how to test frequency midsteps, but i did it for min (800Mhz) and for max(1900) and interpolated

running gimps for 5h is good enough, i've never had hang-ups since then;-)

now i'm running
Code:
module_powernow_k8_args_2_6="freq_list=1900,1800,1600,800 vcore_list=975,950,875,725"


my turion is about 5C cooler at 800Mhz, and more than 15 at 1900Mhz [full load using gimps]
but it doesn't mean it's cool.... idle ~40C, load ~70C.... damn hot little turion

grafrotz thanks again
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TwoMinds
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PostPosted: Mon Aug 17, 2009 4:06 pm    Post subject: Reply with quote

new_nOOb wrote:
it´s doesn't work.

root@ubuntu:/usr/src/linux-2.6.30.3# patch -p1 < powernow-patch-2.6.30.3.patch (or -p0)
missing header for unified diff at line 3 of patch
can't find file to patch at input line 3
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|--- powernow-k8.c-ORIGINAL 2009-08-02 15:39:33.989135271 +0200
|+++ powernow-k8.c 2009-08-02 15:37:50.853136905 +0200
--------------------------
File to patch:


when i go to the directory then


root@ubuntu:/usr/src/linux-2.6.30.3/arch/x86/kernel/cpu/cpufreq# patch -p0 <powernow-patch-2.6.30.3.patch
patching file powernow-k8.c
Hunk #4 succeeded at 77 with fuzz 1.
Hunk #5 succeeded at 95 with fuzz 1.
Hunk #6 FAILED at 689.
Hunk #7 FAILED at 716.
Hunk #8 FAILED at 736.
Hunk #9 FAILED at 771.
Hunk #10 FAILED at 906.
Hunk #11 FAILED at 1023.
Hunk #12 FAILED at 1081.
7 out of 12 hunks FAILED -- saving rejects to file powernow-k8.c.rej

...sorry cut'n'paste problem for me too... :|
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trubicoid
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PostPosted: Mon Aug 24, 2009 12:36 pm    Post subject: Reply with quote

abulak wrote:

i don't know how to test frequency midsteps, but i did it for min (800Mhz) and for max(1900) and interpolated


it's much better to test all the frequencies, otherwise you can get bad surprises

e.g. for 1.8GHz you should do:
Code:

echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 1800000 >  /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

and then check the stability at this frequency

also it is good to check for mce errors (you have to compile it in your kernel CONFIG_X86_MCE_AMD=y) and running mcelog; my turion is showing ecc L1 or L2 cache errors at 800MHz even it is able to go through torture mprime test, so I increase the voltage a little bit to get rid of those errors

on the other hand my newer athlon X2 4850e never shows any mce error at any voltage :( so I have to rely only on the mprime
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grafrotz
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PostPosted: Mon Oct 05, 2009 7:40 am    Post subject: powernow-k8-patch for linux 2.6.32-rc3 Reply with quote

something changed in the powernow-k8.c.i tried to make a new patch:
https://grafrotz.dyndns.org/public/powernow-patch-2.6.32-rc3-GRAFROTZ.patch

OLD: powernow-k8.c in linux 2.6.30.8 has: invalidate_entry(data, i);
NEW: powernow-k8.c in linux 2.6.32-rc3 has: invalidate_entry(powernow_table, i);

patching:
cd /usr/src/linux-2.6.32-rc3/arch/x86/kernel/cpu/cpufreq/
patch -p0 < powernow-patch-2.6.32-rc3-GRAFROTZ.patch
(the patch-file in the same dir)

it seems to work here like before with:
append="powernow-k8.freq_list=2900,2800,2600,2400,2200,2000,1000 powernow-k8.vcore_list=1250,1225,1175,1125,1075,1025,1000"

please be careful when trying the new patch...
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grafrotz
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PostPosted: Wed Oct 07, 2009 8:00 am    Post subject: works with 2.6.30.9 too Reply with quote

i tested the new patch with kernel 2.6.30.9. it seems to work.
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grafrotz
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PostPosted: Wed Oct 07, 2009 10:26 pm    Post subject: powernow-patch for linux 2.6.30.9 Reply with quote

a corrected version for linux 2.6.30.9:

https://grafrotz.dyndns.org/public/powernow-patch-2.6.30.9.patch
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razze
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PostPosted: Tue Aug 03, 2010 3:26 pm    Post subject: Reply with quote

Hi!

Still a great patch you have made, and I have been using it for several years!

Is there an update for say 2.6.34 or newer kernels? I get the following rejection on 2.6.34-r1:

Code:

***************
*** 999,1005 ****
 
                                dprintk("double low frequency table entry, "
                                                "ignoring it.\n");
-                               invalidate_entry(data, i);
                                continue;
                        } else
                                cntlofreq = i;
--- 1059,1065 ----
 
                                dprintk("double low frequency table entry, "
                                                "ignoring it.\n");
+                               invalidate_entry(powernow_table, i);
                                continue;
                        } else
                                cntlofreq = i;

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AMD Athlon 64 X2 3800+ @2,3 GHz, Asus A8V, VIA K8T800PRO, Nvidia GeForce 7600GS, 2 Gb Dual Channel DDR RAM, 2x Samsung SP120 200Gb, 2x WD 320Gb, Plextor PX-716A, linux-2.6.31-gentoo-r10
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grafrotz
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PostPosted: Tue Aug 03, 2010 3:43 pm    Post subject: patch for 2.6.34 Reply with quote

https://grafrotz.dyndns.org/majos/software/devices/powernow-patch-2.6.34-GRAFROTZ.patch
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razze
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PostPosted: Tue Aug 03, 2010 5:04 pm    Post subject: Reply with quote

Great, Thanks!!!!
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Linux User #393524

AMD Athlon 64 X2 3800+ @2,3 GHz, Asus A8V, VIA K8T800PRO, Nvidia GeForce 7600GS, 2 Gb Dual Channel DDR RAM, 2x Samsung SP120 200Gb, 2x WD 320Gb, Plextor PX-716A, linux-2.6.31-gentoo-r10
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grafrotz
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PostPosted: Mon Sep 06, 2010 5:56 pm    Post subject: settings Reply with quote

Hi,

which undervolt-settings do you use for your AMD X2 3800+ Windsor 65W? I use:
powernow-k8.freq_list=2000,1800,1000
powernow-k8.vcore_list=1200,1150,1050

which values do somebody use for an AMD X2 5600+ Brisbane 65W? I use:
powernow-k8.freq_list=2900,2800,2600,2400,2200,2000,1000
powernow-k8.vcore_list=1250,1225,1175,1125,1075,1025,100

Both sets of setting are stable here since some month!

Greetings
Mario
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freke
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PostPosted: Thu Oct 21, 2010 3:27 pm    Post subject: Reply with quote

Thanks for keeping the patch up-to-date, used it a bit back in mid-2005 - 2008 on my laptop, and now I'm finding myself putting Gentoo on the laptop again and still able to apply the undervolt-patches :)
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Ceh
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PostPosted: Tue Nov 09, 2010 1:18 pm    Post subject: Reply with quote

There are some interesting tools for undervolting newer AMD-processors.

TurionPowerControl http://amdath800.dyndns.org/amd/
K10ctl http://www.ztex.de/misc/k10ctl.e.html
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grafrotz
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PostPosted: Wed Nov 24, 2010 6:22 pm    Post subject: undervolt patch for kernel 2.6.36.1 Reply with quote

undervolt patch for kernel 2.6.36.1:
https://grafrotz.dyndns.org/majos/software/devices/powernow-patch-2.6.36.1-GRAFROTZ.patch

save the patch in the directory /usr/src/

cd /usr/src/linux
cd arch/x86/kernel/cpu/cpufreq
patch -p0 </usr/src/powernow-patch-2.6.36.1-GRAFROTZ.patch

to create the patch, i used
diff -Naur powernow-k8.ORIGINAL powernow-k8.c > /usr/src/powernow-patch-2.6.36.1-GRAFROTZ.patch

Greetings
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freke
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PostPosted: Sat Mar 19, 2011 2:30 pm    Post subject: Reply with quote

Does anyone per chance have a copy of the patch for 2.6.36?
Link seems to be down :(
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grafrotz
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PostPosted: Sat Mar 19, 2011 2:36 pm    Post subject: patch Reply with quote

https://mariobachmann.dyndns.org/majos/software/devices/powernow-patch-2.6.36.1-GRAFROTZ.patch

cd /usr/src/linux/arch/x86/kernel/cpu/cpufreq
patch -p0 < powernow-patch-2.6.36.1-GRAFROTZ.patch

Greetings
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freke
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PostPosted: Sat Mar 19, 2011 2:47 pm    Post subject: Reply with quote

Thanks a lot :D
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s_bernstein
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PostPosted: Sat Mar 19, 2011 6:42 pm    Post subject: Reply with quote

Hmm... funny. I always thought, that's what linux-PHC is for?
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freke
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PostPosted: Sun Mar 20, 2011 2:58 am    Post subject: Reply with quote

Seems so - didn't know about that project, have been using this wonderful patch for years though :D
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grafrotz
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PostPosted: Sun Mar 20, 2011 7:36 am    Post subject: which is the smartest way? what about k10? Reply with quote

s_bernstein wrote:
Hmm... funny. I always thought, that's what linux-PHC is for?


I looked at the code of phc-k8-0.4.3 and it seems it technically works very similar to this patch here.
phc can deal with k8 (as this patch here too).

What about k10? somebody knows how to undervolt new CPUs? Is it necessary (temperature, noise)?
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s_bernstein
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PostPosted: Sun Mar 20, 2011 7:49 am    Post subject: Reply with quote

As far as I remember there should be support for k10 - at least in the so called test release. I'm using linux-PHC for years on my ThinkPad and besides killing the fan noise because the fan doesn't run under normal workloads anymore (execpt for compiling), it also provide increased battery life for about half an hour.
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abulak
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PostPosted: Mon Jul 25, 2011 4:27 pm    Post subject: Reply with quote

any chance for the same patch for kernel-3.0?

I see there were some changes in powernow-k8.c not mentioning the kernel source structure...
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grafrotz
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PostPosted: Wed Jul 27, 2011 10:30 am    Post subject: Kernel 3.0 Reply with quote

I just tested linux 3.0.0 and i want the powernow-patch back too!

Perhaps I will try to adjust the old patch for the new kernel. If someone else could try it too, it would be fine.

The powernow-file is in this path:
/usr/src/linux/drivers/cpufreq/powernow-k8.c
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