Re: [PATCH-tip 0/2] locking/rwsem: Rwsem rearchitecture part 2 follow-up patches

[Peter Zijlstra]

On Mon, Apr 15, 2019 at 04:58:27PM -0400, Waiman Long wrote:
> This series contain 2 follow-up patches to alleviate the performance
> regression found in the page_fault1 test of the will-it-scale benchmark.
> This does not recover all the lost performance, but reclaim a sizeable
> portion of it.
> 
> The regression was found on an Intel system. I have run the test on
> an AMD system. The regression wasn't seen there.  There are only minor
> variations in performance. Perhaps the page fault path is quite different
> between Intel and AMD systems.

Can you please just fold this back into the appropriate patches? Trying
to review all the back and forth is painful.