Messages in this thread | | | Date | Thu, 5 Jan 2006 06:00:50 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] reduce sizeof(percpu_data) and removes dependance against NR_CPUS |
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Eric Dumazet <dada1@cosmosbay.com> 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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org 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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