From: Steve Capper <Steve.Capper@arm.com>
To: Anshuman Khandual <Anshuman.Khandual@arm.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Suzuki Poulose <Suzuki.Poulose@arm.com>,
Punit Agrawal <Punit.Agrawal@arm.com>,
Will Deacon <Will.Deacon@arm.com>,
Steven Price <Steven.Price@arm.com>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"mhocko@kernel.org" <mhocko@kernel.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"mike.kravetz@oracle.com" <mike.kravetz@oracle.com>,
"n-horiguchi@ah.jp.nec.com" <n-horiguchi@ah.jp.nec.com>,
nd <nd@arm.com>
Subject: Re: [PATCH V3 2/5] mm/hugetlb: Enable PUD level huge page migration
Date: Thu, 8 Nov 2018 10:34:21 +0000 [thread overview]
Message-ID: <20181108103409.35r77mgtpigs5q3b@capper-debian.cambridge.arm.com> (raw)
In-Reply-To: <1540299721-26484-3-git-send-email-anshuman.khandual@arm.com>
On Tue, Oct 23, 2018 at 06:31:58PM +0530, Anshuman Khandual wrote:
> 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.
>
> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Steve Capper <steve.capper@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 1b858d7..70bcd89 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;
> --
> 2.7.4
>
next prev parent reply other threads:[~2018-11-08 10:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-23 13:01 [PATCH V3 0/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-23 13:01 ` [PATCH V3 1/5] mm/hugetlb: Distinguish between migratability and movability Anshuman Khandual
2018-10-24 13:54 ` Michal Hocko
2018-11-08 10:33 ` Steve Capper
2018-10-23 13:01 ` [PATCH V3 2/5] mm/hugetlb: Enable PUD level huge page migration Anshuman Khandual
2018-11-08 10:34 ` Steve Capper [this message]
2018-10-23 13:01 ` [PATCH V3 3/5] mm/hugetlb: Enable arch specific huge page size support for migration Anshuman Khandual
2018-10-24 13:56 ` Michal Hocko
2018-10-24 13:58 ` Michal Hocko
2018-10-25 6:23 ` Anshuman Khandual
2018-10-25 7:45 ` Michal Hocko
2018-11-08 10:35 ` Steve Capper
2018-10-23 13:02 ` [PATCH V3 4/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-11-08 10:35 ` Steve Capper
2018-11-23 14:42 ` Catalin Marinas
2018-10-23 13:02 ` [PATCH V3 5/5] arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages Anshuman Khandual
2018-11-08 10:36 ` Steve Capper
2018-11-23 14:42 ` Catalin Marinas
2018-11-23 15:08 ` [PATCH V3 0/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
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