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SubjectRe: [PATCH] Use uname not sysctl to get the kernel revision
Benjamin Herrenschmidt wrote:
>>
>> If you want to do the job right then do this
>>
>> - Stick an indicator of how much else wants to run on this CPU in the
>> vsyscall page or similar location
>
> Except that "this cpu" doesn't really mean anything in userspace, and
> while I think Andi has some tricks to get some sort of CPU number to
> userspace (though it's really only valid during the execution of the
> instruction that reads it :) I haven't yet found an equivalent for
> powerpc (and possibly other architectures will have the same problem).
>

Sure it does... although its validity in terms of a locality metric
decays with time.

-hpa
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