diff options
| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2019-03-05 15:43:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:15 -0800 |
| commit | 9b553bf5eb99dd1b2d8ae23136da46da5c205dfd (patch) | |
| tree | c4caaa4c67dac61a1edbc0a0a848cfa0a1bef6a5 | |
| parent | 7ed2c31dabdeb3ee6abe8ff5aac7287821a50cba (diff) | |
mm/hugetlb: enable PUD level huge page migration
Architectures like arm64 have PUD level HugeTLB pages for certain configs
(1GB huge page is PUD based on ARM64_4K_PAGES base page size) that can
be enabled for migration. It can be achieved through checking for
PUD_SHIFT order based HugeTLB pages during migration.
Link: http://lkml.kernel.org/r/1545121450-1663-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/hugetlb.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 1b858d795731..70bcd8973323 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -497,7 +497,8 @@ static inline bool hugepage_migration_supported(struct hstate *h) { #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION if ((huge_page_shift(h) == PMD_SHIFT) || - (huge_page_shift(h) == PGDIR_SHIFT)) + (huge_page_shift(h) == PUD_SHIFT) || + (huge_page_shift(h) == PGDIR_SHIFT)) return true; else return false; |