Re: [ANNOUNCE] HotPlug CPU patch against 2.5.0

From: Dave Jones (
Date: Thu Dec 13 2001 - 20:36:29 EST

On Thu, 13 Dec 2001, Kimio Suganuma wrote:

> There is no /proc/sys/cpu directory on the latest kernel, and
> I guess someone is thinking the structure under the directory,
> right?

The current /proc/sys/cpu/ sysctls have been added as part of
Russell's cpu frequency scaling work. Currently, only the ARM
specific bits are merged. There are generic bits and x86 bits
waiting to be merged at some point..

The x86 part of this work uses the same framework, and was
done by myself and Arjan van de Ven. It's almost in a state
ready for merging also.

If you're interested in looking at this, it's in cvs..
cvs login
cvs checkout

> echo 1 > /proc/sys/cpu/<cpu-id>/online
> or
> Which is the right way?

This one looks most sensible to me, and fits in with the
current scheme nicely.


| Dave Jones.
| SuSE Labs

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