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arm64/mm: enable HugeTLB migration
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Let arm64 subscribe to generic HugeTLB page migration framework.  Right
now this only works on the following PMD and PUD level HugeTLB page
sizes with various kernel base page size combinations.

         CONT PTE    PMD    CONT PMD    PUD
         --------    ---    --------    ---
  4K:         NA     2M         NA      1G
  16K:        NA    32M         NA
  64K:        NA   512M         NA

Link: http://lkml.kernel.org/r/1545121450-1663-5-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: Catalin Marinas <catalin.marinas@arm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Anshuman Khandual authored and Linus Torvalds committed Mar 6, 2019
1 parent e693de1 commit 4a03a05
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4 changes: 4 additions & 0 deletions arch/arm64/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -1467,6 +1467,10 @@ config SYSVIPC_COMPAT
def_bool y
depends on COMPAT && SYSVIPC

config ARCH_ENABLE_HUGEPAGE_MIGRATION
def_bool y
depends on HUGETLB_PAGE && MIGRATION

menu "Power management options"

source "kernel/power/Kconfig"
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