Re: [Patch] Output of L1,L2 and L3 cache sizes to /proc/cpuinfo

["H. Peter Anvin" <hpa@transmeta.com>]

"Martin.Knoblauch" wrote:
> 
> >>
> >> Hi,
> >>
> >> while trying to enhance a small hardware inventory script, I found that
> >> cpuinfo is missing the details of L1, L2 and L3 size, although they may
> >> be available at boot time. One could of cource grep them from "dmesg"
> >> output, but that may scroll away on long lived systems.
> >>
> >
> >Any particular reason this needs to be done in the kernel, as opposed
> >to having your script read /dev/cpu/*/cpuid?
> >
> >        -hpa
> 
>  terse answer: probably the same reason as for most stuff in
> /proc/cpuinfo :-)
> 

Terse but just plain wrong.

Most stuff in /proc/cpuinfo is either hard (under some set of
circumstances) for userspace to obtain, or it is used by the kernel
itself anyway.

	-hpa

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