[v5,0/2] mm: using CMA for 1 GB hugepages allocation

Message

Roman Gushchin April 7, 2020, 4:38 p.m. UTC

The patchset adds a hugetlb_cma boot option, which allows
to reserve a cma area which can be later used for 1 GB
hugepages allocations.

v5:
1) made the hugetlb_cma work if a cma reservation fails on some nodes

v4:
1) added a patch from Aslan, which is adding a useful function to cma
2) removed the hard-coded archs list from docs
3) added a warning printing on non-supported archs
4) hugetlb_lock is temporarily dropped in update_and_free_page()

Thanks!


Aslan Bakirov (1):
  mm: cma: NUMA node interface

Roman Gushchin (1):
  mm: hugetlb: optionally allocate gigantic hugepages using cma

 .../admin-guide/kernel-parameters.txt         |   8 ++
 arch/arm64/mm/init.c                          |   6 +
 arch/x86/kernel/setup.c                       |   4 +
 include/linux/cma.h                           |  13 ++-
 include/linux/hugetlb.h                       |  12 ++
 include/linux/memblock.h                      |   3 +
 mm/cma.c                                      |  16 +--
 mm/hugetlb.c                                  | 109 ++++++++++++++++++
 mm/memblock.c                                 |   2 +-
 9 files changed, 163 insertions(+), 10 deletions(-)