Eric Dumazet <[email protected]> wrote:
>
> Current sizeof(percpu_data) is NR_CPUS*sizeof(void *)
>
> This trivial patch makes percpu_data real size depends on
> highest_possible_processor_id() instead of NR_CPUS
>
> percpu_data allocations are not performance critical, we can spend few CPU
> cycles and save some ram.
hm, highest_possible_processor_id() isn't very efficient. And it's quite
dopey that it's a macro. We should turn it into a real function which
caches its return result and goes BUG if it's called before
cpu_possible_map is initialised.
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