Christoph Lameter wrote: > The percpu areas need to be allocated in a NUMA aware fashion. Otherwise > you use distant memory for the most performance sensitive areas. The NUMA > subsystem must be so far up that these allocations can be performed in the > right way. And this means at least you need to know on which node each > processor is located. That is what the PDA is currently used for and i386 > has no other way of doing that. I think we could use an array [NR_CPUS] > for this one but we want to avoid these arrays because NR_CPUS may get > very big. > Oh, you mean there needs to be some percpu data mechanism operating in order to do numa-aware allocations, which would be necessary to allocate the percpu memory itself? I can see how that would be awkward. J - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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