Re: [Lse-tech] Re: [RFC] Scalable statistics counters using

Zwane Mwaikambo (zwane@linuxpower.ca)
Sat, 27 Jul 2002 14:00:09 +0200 (SAST)


On 26 Jul 2002, Robert Love wrote:

> Hmm, is your CPU-space sparse?

If you're referring to APIC IDs, even on generic SMP boxes APIC IDs can be
sparse, its not a requirment that they are consecutive (e.g. i have a dual
rig here which has a BSP with an ID of 4

> If that is the case, and the max APIC ID is set to NR_CPUS, and the
> kernel expects a 1:1 between NR_CPU value and logical CPU #... boom.

the NR_CPU should only be used to satisfy the current running cpu count
no?

Cheers,
Zwane

-- 
function.linuxpower.ca

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