Getting/Forcing Greater than 4KB Buffer Allocations

[John-Mark Gurney]

Scott Long wrote this message on Thu, Jul 19, 2007 at 00:56 -0400:
> 1Gb and 10Gb adapters.  The question I have is whether this new back-end
> should be accessible directly through yet another bus_dmamap_load_foo
> variant that the drivers need to know specifically about, or indirectly
> and automatically via the existing bus_dmamap_load_foo variants.  The
> tradeoff is further API pollution vs the opportunity for even more
> efficiency through no indirect function calls and no cache misses from
> accessing the busdma tag.  I don't like API pollution since it makes it
> harder to maintain code, but the opportunity for the best performance
> possible is also appealing.

My vote would be to keep the existing api, and add a flag to the tag
to select which backend to use...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."