Re: Shell script to select the right cpufreq module?

[Michael Opdenacker <zumbi3@free.fr>]

Hi Dominik!

That's a very good start... thanks a lot!
I will modify it according to my needs (just need something that sets a 
variable to the right module name, or leaves it with an empty value 
otherwise), and will post it to this list for testing, in particular on 
non Intel processors.

:-)

    Michael.

>On Tue, Mar 30, 2004 at 09:27:33PM +0200, Michael Opdenacker wrote:
>  
>
>>Does anyone here already have a shell script that reads /proc/cpuinfo 
>>and returns the name of the corresponding cpufreq module if the 
>>processor is supported?
>>
>>Otherwise, I'll start to write one and ask you guys to test it, as I can 
>>only make tests on P4.
>>    
>>
>
>I proposed one such shell script a couple of weeks ago and submitted a
>draft, which I can't locate in the archives ATM so here it is again:
>
>#!/bin/sh
>
># Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
>#
># This script is free software; you can redistribute it and/or modify
># it under the terms of the GNU General Public License version 2 as
># published by the Free Software Foundation.
>#
># This script tries to detect the best suited x86 cpufreq driver, and
># load it using "modprobe" commands.
>#
>#
>
>DEBUG=1
>
>KV="$(uname -r | cut -c1-3)"
>
>if [ "$KV" != "2.6" ]; then
>	echo "Wrong kernel version"
>	exit 1
>fi
>
># the cpufreq drivers
>ACPI=0
>P4CLOCKMOD=0
>SPEEDSTEP_SMI=0
>SPEEDSTEP_ICH=0
>SPEEDSTEP_CENTRINO=0
>FLAG_EST=0
>FLAG_ACPI=0
>FLAG_ACC=0
>
># parse /proc/cpuinfo 
>FAMILY="$(cat /proc/cpuinfo | grep "cpu family" | cut -c14-)"
>MODEL="$(cat /proc/cpuinfo | grep "model" | grep -v "model name" | cut -c10-)"
>STEPPING="$(cat /proc/cpuinfo | grep "stepping" | cut -c12-)"
>
># parse for vendor
>cat /proc/cpuinfo | grep vendor_id | grep Intel &> /dev/null && INTEL=1
>
># parse flags
>cat /proc/cpuinfo | grep "flags" | grep " est" &> /dev/null && FLAG_EST=1
>cat /proc/cpuinfo | grep "flags" | grep " acpi" &> /dev/null && FLAG_ACPI=1
>cat /proc/cpuinfo | grep "flags" | grep " tm" &> /dev/null && FLAG_ACC=1
>
>
>if [ $DEBUG -eq 1 ]; then
>	echo "CPU family is $FAMILY"
>	echo "CPU model is $MODEL"
>	echo "CPU stepping is $STEPPING"
>	echo "CPU vendor: Intel? $INTEL"
>fi
>
>
>if [ $INTEL -eq 1 ];  then
>	case "$FAMILY" in
>		"6")
>			if [ $DEBUG -eq 1 ]; then
>				echo "Pentium 3 or Pentium M detected."
>			fi
>			case "$MODEL" in
>				"9")
>					if [ "$STEPPING" == "5" ] ; then
>						if [ $FLAG_EST -eq 1 ]; then
>							SPEEDSTEP_CENTRINO=1
>						fi
>					fi
>					;;
>				"8")
>					SPEEDSTEP_SMI=1
>					SPEEDSTEP_ICH=1
>					;;
>				"11")
>					SPEEDSTEP_ICH=1
>					;;
>				*)
>					echo "Unknown CPU."
>					;;
>			esac
>			;;
>		"15")
>			if [ $DEBUG -eq 1 ]; then
>				echo "Pentium 4 detected."
>			fi
>			if [ "$MODEL" == "2" ]; then
>				case "$STEPPING" in
>					"4")
>						SPEEDSTEP_ICH=1
>						;;
>					"7")
>						SPEEDSTEP_ICH=1
>						;;
>					"9")
>						SPEEDSTEP_ICH=1
>						;;
>					*)
>						true
>						;;
>				esac
>			fi
>			;;
>		*)
>			echo "unknown Intel Processor. Aborting."
>			exit 1
>			;;
>	esac
>	if [ $FLAG_ACPI -eq 1 ]; then
>		if [ $FLAG_ACC -eq 1 ]; then
>			P4CLOCKMOD=1;
>		fi
>	fi
>	ACPI=1
>fi
>
>if [ $DEBUG -eq 1 ]; then
>	echo "ACPI? $ACPI"
>	echo "P4CLOCKMOD? $P4CLOCKMOD"
>	echo "SPEEDSTEP_CENTRINO? $SPEEDSTEP_CENTRINO"
>	echo "SPEEDSTEP_ICH? $SPEEDSTEP_ICH"
>	echo "SPEEDSTEP_SMI? $SPEEDSTEP_SMI"
>fi
>
>if [ $SPEEDSTEP_CENTRINO -eq 1 ]; then
>	modprobe speedstep-centrino
>fi
>
>if [ $SPEEDSTEP_ICH -eq 1 ]; then
>	modprobe speedstep-ich
>fi
>
>if [ $ACPI -eq 1 ]; then
>	modprobe acpi
>fi
>
>if [ $P4CLOCKMOD -eq 1 ]; then
>	modprobe p4-clockmod
>fi
>
>if [ $SPEEDSTEP_SMI -eq 1 ]; then
>	modprobe speedstep-smi
>fi
>
>
>
>end of script... and as I'm more interested in the kernel side of cpufreq
>anyways, I'd be glad if somebody else would finish this script and make it
>ready for prime-time usage. Are you willing to do so? Would be great!
>
>	Dominik
>
>
>  
>


-- 

Michael Opdenacker
http://opdenacker.org/