From: Toula Michael <keos@wanadoo.fr>
To: "Michael Teichgräber" <mt@wmipf.in-berlin.de>, cpufreq@www.linux.org.uk
Subject: Re: /proc/sys/cpu interface and elanfreq on linux 2.4.20
Date: Wed, 17 Sep 2003 11:25:37 +0200 [thread overview]
Message-ID: <3F682891.6080600@wanadoo.fr> (raw)
In-Reply-To: <87znh4e0l2.fsf@wmipf.in-berlin.de>
Michael Teichgräber wrote:
>
>Am I missing something, does perhaps "deprecated interfaces" mean, the
>userspace access via /proc/sys/cpu might not work?
>
>
>
>
According to /usr/src/linux/Documentation/cpufreq/user-guide.txt :
"These are files (/proc/sys/cpu/0/* ) for deprecated interfaces to cpufreq, which offer far
less functionality."
Many functionality are missing (have a look on user-guide for more details) but the userspace stuff works.
In fact you just forgot to activate it. To do so (you must be root):
$ echo -n "0%0%100%userspace" > /proc/cpufreq
and then you should have
$ cat /proc/sys/cpu/0/*
66000
66000
1000
Now you can echo the frequency you want in /proc/sys/cpu/0/speed !
Enjoy !!!
Mike
next prev parent reply other threads:[~2003-09-17 9:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-17 0:10 /proc/sys/cpu interface and elanfreq on linux 2.4.20 Michael Teichgräber
2003-09-17 9:25 ` Toula Michael [this message]
2003-09-17 11:56 ` Michael Teichgräber
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