Hi John, On Sat, Oct 03, 2020 at 04:02:50AM +0000, John Stultz wrote: > Hey All, ... > > I did add to this series a reworked version of my uncached > system heap implementation I was submitting a few weeks back. > Since it duplicated a lot of the now reworked system heap code, > I realized it would be much simpler to add the functionality to > the system_heap implementaiton itself. That looks like a neat approach to me. Referencing your previous thread, I like the separate heap (as you have done), rather than a generic "cached"/"noncached" flag on all heaps. > > While not improving the core allocation performance, the > uncached heap allocations do result in *much* improved > performance on HiKey960 as it avoids a lot of flushing and > invalidating buffers that the cpu doesn't touch often. > > Feedback on these would be great! Minor nit: s/detatch/detach/ on both heaps, but other than that you can add my r-b to patches 1-5. As you've said, it does feel like there's some room for de-duplication, but that will be easier to work out once the implementations settle. I've a couple of comments for the uncached heap, but I'm not confident I understand the implications of having the non-cached alias enough to say if it looks OK or not. Cheers! -Brian
