Messages in this thread | | | Date | Tue, 4 Dec 2012 15:37:16 +0000 | From | Alan Cox <> | Subject | Re: [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers |
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> > so you need to tweak the map/unmap if you do this. > > > > As to overhead. I'd love to see a measurement that can detect the > > difference. Do you have a benchmark that shows it ? > > Don't have any numbers but it seems reasonable to me.
Processors are pretty good at prediction these days. I've not seen any evidence to support the assumption.
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