Patch deviation from Kernel:stable:
+ Valve's fsync/futex patches.
+ Graysky's cpu optimization patch
+ Cherry-picked patches from the Zen kernel
* tune CFS and ondemand for interactivity
* enable zswap by default
* zswap use lz4 and z3fold by default
* enable background reclaim of hugepages
* disable compaction of unevictable pages

Config deviation from Kernel:stable
+ Enable Zen patches
+ Compile specifically for AMD Zen2 (Ryzen 3000)