[PATCH 0/4] mm/mm_init: simplify deferred init of struct pages

[Mike Rapoport <rppt@kernel.org>]

From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>

Hi,

These patches simplify deferred initialization of the memory map.

Beside nice negative diffstat I measured 3ms reduction in the
initialization of deferred pages on single node system with 64GiB of RAM.

I don't have access to large memory machines, so I'd really appreciate
testing of these patches on them to make sure there's no regression there.

The patches are also available at git:
https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git/log/?h=deferred-memmap-init/v1

Mike Rapoport (Microsoft) (4):
  mm/mm_init: use deferred_init_memmap_chunk() in deferred_grow_zone()
  mm/mm_init: deferred_init_memmap: use a job per zone
  mm/mm_init: drop deferred_init_maxorder()
  memblock: drop for_each_free_mem_pfn_range_in_zone_from()

 .clang-format            |   1 -
 include/linux/memblock.h |  22 -----
 mm/memblock.c            |  64 -------------
 mm/mm_init.c             | 195 +++++++++++++--------------------------
 4 files changed, 62 insertions(+), 220 deletions(-)


base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
-- 
2.50.1