Messages in this thread | | | Date | Tue, 6 Sep 2022 16:38:33 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 0/5] cpumask: cleanup nr_cpu_ids vs nr_cpumask_bits mess |
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On Tue, Sep 06, 2022 at 01:06:47PM +0100, Valentin Schneider wrote:
> #define nr_cpumask_bits nr_cpu_ids
That assumes the CPU space is dense; is this so? That is, you can have 4 CPUs while the highest cpu number is vastly larger than 4.
It's uncommon, but not unheard of I think. ISTR some BIOSes leaving holes in the CPU space when there were empty CPU sockets on the motherboard.
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