The patch titled
Subject: mm/hugetlb: enable PUD level huge page migration
has been added to the -mm tree. Its filename is
mm-hugetlb-enable-pud-level-huge-page-migration.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-enable-pud-level-huge-page-migration.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-enable-pud-level-huge-page-migration.patch
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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: 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@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Reviewed-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Reviewed-by: Steve Capper <steve.capper@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/include/linux/hugetlb.h~mm-hugetlb-enable-pud-level-huge-page-migration
+++ a/include/linux/hugetlb.h
@@ -497,7 +497,8 @@ static inline bool hugepage_migration_su
{
#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;
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
mm-replace-all-open-encodings-for-numa_no_node.patch
mm-hugetlb-distinguish-between-migratability-and-movability.patch
mm-hugetlb-enable-pud-level-huge-page-migration.patch
mm-hugetlb-enable-arch-specific-huge-page-size-support-for-migration.patch
arm64-mm-enable-hugetlb-migration.patch
arm64-mm-enable-hugetlb-migration-for-contiguous-bit-hugetlb-pages.patch
