From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: suzuki.poulose@arm.com, punit.agrawal@arm.com,
will.deacon@arm.com, Steven.Price@arm.com, steve.capper@arm.com,
catalin.marinas@arm.com, mhocko@kernel.org,
akpm@linux-foundation.org, mike.kravetz@oracle.com,
n-horiguchi@ah.jp.nec.com
Subject: [PATCH V2 1/5] mm/hugetlb: Enable PUD level huge page migration
Date: Fri, 12 Oct 2018 09:29:55 +0530 [thread overview]
Message-ID: <1539316799-6064-2-git-send-email-anshuman.khandual@arm.com> (raw)
In-Reply-To: <1539316799-6064-1-git-send-email-anshuman.khandual@arm.com>
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.
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
include/linux/hugetlb.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 6b68e34..9c1b77f 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -483,7 +483,8 @@ 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;
--
2.7.4
next prev parent reply other threads:[~2018-10-12 4:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-12 3:59 [PATCH V2 0/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-12 3:59 ` Anshuman Khandual [this message]
2018-10-19 8:09 ` [PATCH V2 1/5] mm/hugetlb: Enable PUD level huge page migration Michal Hocko
2018-10-22 3:01 ` Anshuman Khandual
2018-10-22 7:16 ` Michal Hocko
2018-10-12 3:59 ` [PATCH V2 2/5] mm/hugetlb: Distinguish between migratability and movability Anshuman Khandual
2018-10-19 1:59 ` Naoya Horiguchi
2018-10-19 2:32 ` Anshuman Khandual
2018-10-12 3:59 ` [PATCH V2 3/5] mm/hugetlb: Enable arch specific huge page size support for migration Anshuman Khandual
2018-10-12 3:59 ` [PATCH V2 4/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-12 3:59 ` [PATCH V2 5/5] arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages Anshuman Khandual
2018-10-17 8:19 ` [PATCH V2 0/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-19 2:01 ` Naoya Horiguchi
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