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    SubjectRe: [git pull] cpus4096 fixes
    On Monday 28 July 2008 18:16:39 Ingo Molnar wrote:
    > * Rusty Russell <> wrote:
    > > Mike: I now think the right long-term answer is Linus' dense cpumap
    > > idea + a convenience allocator for cpumasks. We sweep the kernel for
    > > all on-stack vars and replace them with one or the other. Thoughts?
    > The dense cpumap for constant cpumasks is OK as it's clever, compact and
    > static.
    > All-dynamic allocator for on-stack cpumasks ... is a less obvious
    > choice.

    Sorry, I was unclear. "long-term" == "more than 4096 CPUs", since I thought
    that was Mike's aim. If we only want to hack up 4k CPUS and stop, then I
    understand the current approach.

    If we want huge cpu numbers, I think cpumask_alloc/free gives the clearest
    code. So our approach is backwards: let's do that *then* put ugly hacks in
    if it's really too slow.


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