Re: [discuss] [PATCH] Export cpu topology for IA32 and x86_64 by sysfs

[Andi Kleen]

> Not really. The current display in /proc/cpuinfo, though useful for
> human reader,
> is not very friendly to scripts. And if one wants to find out which
> logical CPUs belong
> to the same core, there will have to be some amount of code in userlevel
> to parse
> the /proc/cpuinfo and get this info. So, we thought that it may be
> useful to 
> export the masks to the user directly in a genric way. And, while doing
> that
> thinking was adding new fields in /sysfs rather than /proc/ was better.

Hmm - having written both /proc and /sys parsers i'm not sure your new
setup will be any easier to handle in a program than /proc/cpuinfo. Probably not.

I would suggest you supply a standard C library and command line utility
at least - but at least for the later the output would
be likely not that different from cat /proc/cpuinfo

> Having said that, I feel Nathan's suggestion of doing it in more
> architecturally-neutral way should be better than this. We will have a
> relook at this one now.

That makes sense. /proc/cpuinfo is not that bad in itself, except that
it's very architecture dependent.

-Andi

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