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

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