On Wed, Jul 07, 2021 at 12:35:23PM -0700, John Stultz wrote: > So, as Christian mentioned, on the TTM side it's useful, as they are > trying to avoid TLB flushes when changing caching attributes. > > For the dmabuf system heap purposes, the main benefit is moving the > page zeroing to the free path, rather than the allocation path. This > on its own doesn't save much, but allows us to defer frees (and thus > the zeroing) to the background, which can get that work out of the hot > path. I really do no think that is worth it to fragment the free pages.
