It isn't zero: Somebody has to add the support, check/fix interactions with
other features, write documentation, keep the support and its documentation
up to date when stuff in the kernel changes, userland (and user) has to be
prepared (and checked that it works if the feature is present, and find
workarounds if it isn't), ...
It might be a small cost, but N * small gets big _very_ fast, and the value
is marginal at best in this case. There are many other such "small cost
features" with equally small value results that haven't been included. One
of the big reasons why I like Linux, BTW.
-- Horst von Brand http://counter.li.org # 22616 - 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/