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Andrew Morton writes: > > Drawback would be some more TLB misses. > > yup. On some (important) architectures - I'm not sure which architectures > do the bigpage-for-kernel trick. I looked at optimizing the per-cpu data accessors on PowerPC and only ever saw fractions of a percent change in overall performance, which says to me that we don't actually use per-cpu data all that much. So unless you make per-cpu data really really slow, I doubt that we'll see any significant performance difference. Paul. - 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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