On Wed, Feb 28, 2018 at 2:19 PM, Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote: > On Wed, Feb 28, 2018 at 9:44 PM, Frank Rowand <frowand.list@xxxxxxxxx> wrote: >> On 02/28/18 11:31, Andy Shevchenko wrote: >>> On Wed, Feb 28, 2018 at 9:04 PM, <frowand.list@xxxxxxxxx> wrote: > >>> The question is why O(1) is so important? O(log(n)) wouldn't work? >> >> O(1) is not critical. It was just a nice side result. >> >> >>> Using radix_tree() I suppose allows to dynamically extend or shrink >>> the cache which would work with DT overlays. >> >> The memory usage of the phandle cache in this patch is fairly small. >> The memory overhead of a radix_tree() would not be justified. > > OTOH the advantage I mentioned isn't a good argument? Yes, but still one that ignores memory usage. I'll take whatever solution doesn't undo this[1]. Rob [1] https://lwn.net/Articles/735839/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
