[PATCH 0/3] Recalculate per-cpu page allocator batch and high limits after deferred meminit

[Mel Gorman]

A private report stated that system CPU usage was excessive on an AMD
EPYC 2 machine while building kernels with much longer build times than
expected. The issue is partially explained by high zone lock contention
due to the per-cpu page allocator batch and high limits being calculated
incorrectly. This series addresses a large chunk of the problem. Patch 1
is mostly cosmetic but prepares for patch 2 which is the real fix. Patch
3 is definiely cosmetic but was noticed while implementing the fix. Proper
details are in the changelog for patch 2.

 include/linux/mm.h |  3 ---
 mm/internal.h      |  3 +++
 mm/page_alloc.c    | 33 ++++++++++++++++++++-------------
 3 files changed, 23 insertions(+), 16 deletions(-)

-- 
2.16.4