Re: [PATCH] CPU frequency display in /proc/cpuinfo

[Erik Mouw]

On Tue, Dec 06, 2005 at 11:56:07AM -0500, Dave Jones wrote:
> On Tue, Dec 06, 2005 at 12:13:49PM +0100, Erik Mouw wrote:
>  > Earlier in this thread you said (I should have quoted that, my fault):
>  > 
>  >   Adding any other interface to obtain this value is equally as broken.
>  > 
>  > So I'm confused, sysfs one of the "any other interfaces"...
> 
> userspace governors need to know the available frequencies to scale to, 
> which they obtain from sysfs. In addition, we maintain an index as to
> which of those is currently chosen.  However, programs should not rely
> on this to be a "how fast is my CPU" status, as it's totally meaningless.
> It's there purely for humans to see "Yes, X < Y, so I'm going at the
> lower of the frequencies my CPU can do", not for programs to calculate
> delays loops and such.

Agreed, sysfs is the way to go.


Erik

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