FYI, we noticed a +12.6% improvement of vm-scalability.throughput due to commit: commit 133e89ef5ef338e1358b16246521ba17d935c396 ("locking/rwsem: Enable lockless waiter wakeup(s)") https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core in testcase: vm-scalability on test machine: lkp-bdw-ex2: 160 threads Broadwell-EX with 512G memory with following parameters: cpufreq_governor=performance/runtime=300s/test=small-allocs-mt Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Xiaolong