On Fri, 30 Jun 2017 16:06:17 +0100, Bruce Richardson <bruce.richard...@intel.com> wrote: > The rte_rings traditionally have only supported having ring sizes as powers > of 2, with the actual usable space being the size - 1. In some cases, for > example, with an eventdev where we want to precisely control queue depths > for latency, we need to allow ring sizes which are not powers of two so we > add in an additional ring capacity value to allow that. For existing rings, > this value will be size-1, i.e. the same as the mask, but if the new > EXACT_SZ flag is passed on ring creation, the ring will have exactly the > usable space requested, although the underlying memory size may be bigger. > > Signed-off-by: Bruce Richardson <bruce.richard...@intel.com>
Acked-by: Olivier Matz <olivier.m...@6wind.com>
