> > > How many different implementations of 'ops->adjfreq' are there? > > > If there is only one you don't need an indirect call. > > > > There's only one implementation. But qed publishes its functions to > > qede [and other modules] by structs of operations and not by exporting > > symbols directly, and I don't see a reason to change that paradigm > > here. > > [Although I might be mistaken about that last bit] > > If any of the functions are on 'hot paths' the cost of the indirect call is > likely > to be measurable. > On a lot of cpus it will be a pipeline stall. > The double-indirect almost certainly generates a stall.
I feel like I'm missing something. Again. I thought the reasonable rate of rate-adjustment is once a second, which doesn't make it 'hot' in any way. In which scenario would we frequently encounter this configuration?
