All of lore.kernel.org
 help / color / mirror / Atom feed
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 0/5] arm64/mm: Enable HugeTLB migration
Date: Fri, 12 Oct 2018 09:29:54 +0530	[thread overview]
Message-ID: <1539316799-6064-1-git-send-email-anshuman.khandual@arm.com> (raw)

This patch series enables HugeTLB migration support for all supported
huge page sizes at all levels including contiguous bit implementation.
Following HugeTLB migration support matrix has been enabled with this
patch series. All permutations have been tested except for the 16GB.

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

First the series adds migration support for PUD based huge pages. It
then adds a platform specific hook to query an architecture if a
given huge page size is supported for migration while also providing
a default fallback option preserving the existing semantics which just
checks for (PMD|PUD|PGDIR)_SHIFT macros. The last two patches enables
HugeTLB migration on arm64 and subscribe to this new platform specific
hook by defining an override.

The second patch differentiates between movability and migratability
aspects of huge pages and implements hugepage_movable_supported() which
can then be used during allocation to decide whether to place the huge
page in movable zone or not.

Changes in V2:

- Added a new patch which differentiates migratability and movability
  of huge pages and implements hugepage_movable_supported() function
  as suggested by Michal Hocko.

Anshuman Khandual (5):
  mm/hugetlb: Enable PUD level huge page migration
  mm/hugetlb: Distinguish between migratability and movability
  mm/hugetlb: Enable arch specific huge page size support for migration
  arm64/mm: Enable HugeTLB migration
  arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages

 arch/arm64/Kconfig               |  4 ++++
 arch/arm64/include/asm/hugetlb.h |  5 +++++
 arch/arm64/mm/hugetlbpage.c      | 20 +++++++++++++++++
 include/linux/hugetlb.h          | 48 +++++++++++++++++++++++++++++++++++++---
 mm/hugetlb.c                     |  2 +-
 5 files changed, 75 insertions(+), 4 deletions(-)

-- 
2.7.4


WARNING: multiple messages have this Message-ID (diff)
From: anshuman.khandual@arm.com (Anshuman Khandual)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 0/5] arm64/mm: Enable HugeTLB migration
Date: Fri, 12 Oct 2018 09:29:54 +0530	[thread overview]
Message-ID: <1539316799-6064-1-git-send-email-anshuman.khandual@arm.com> (raw)

This patch series enables HugeTLB migration support for all supported
huge page sizes at all levels including contiguous bit implementation.
Following HugeTLB migration support matrix has been enabled with this
patch series. All permutations have been tested except for the 16GB.

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

First the series adds migration support for PUD based huge pages. It
then adds a platform specific hook to query an architecture if a
given huge page size is supported for migration while also providing
a default fallback option preserving the existing semantics which just
checks for (PMD|PUD|PGDIR)_SHIFT macros. The last two patches enables
HugeTLB migration on arm64 and subscribe to this new platform specific
hook by defining an override.

The second patch differentiates between movability and migratability
aspects of huge pages and implements hugepage_movable_supported() which
can then be used during allocation to decide whether to place the huge
page in movable zone or not.

Changes in V2:

- Added a new patch which differentiates migratability and movability
  of huge pages and implements hugepage_movable_supported() function
  as suggested by Michal Hocko.

Anshuman Khandual (5):
  mm/hugetlb: Enable PUD level huge page migration
  mm/hugetlb: Distinguish between migratability and movability
  mm/hugetlb: Enable arch specific huge page size support for migration
  arm64/mm: Enable HugeTLB migration
  arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages

 arch/arm64/Kconfig               |  4 ++++
 arch/arm64/include/asm/hugetlb.h |  5 +++++
 arch/arm64/mm/hugetlbpage.c      | 20 +++++++++++++++++
 include/linux/hugetlb.h          | 48 +++++++++++++++++++++++++++++++++++++---
 mm/hugetlb.c                     |  2 +-
 5 files changed, 75 insertions(+), 4 deletions(-)

-- 
2.7.4

             reply	other threads:[~2018-10-12  4:00 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-12  3:59 Anshuman Khandual [this message]
2018-10-12  3:59 ` [PATCH V2 0/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-12  3:59 ` [PATCH V2 1/5] mm/hugetlb: Enable PUD level huge page migration Anshuman Khandual
2018-10-12  3:59   ` Anshuman Khandual
2018-10-19  8:09   ` Michal Hocko
2018-10-19  8:09     ` Michal Hocko
2018-10-22  3:01     ` Anshuman Khandual
2018-10-22  3:01       ` Anshuman Khandual
2018-10-22  7:16       ` Michal Hocko
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
2018-10-12  3:59   ` Anshuman Khandual
2018-10-19  1:59   ` Naoya Horiguchi
2018-10-19  1:59     ` Naoya Horiguchi
2018-10-19  1:59     ` Naoya Horiguchi
2018-10-19  2:32     ` Anshuman Khandual
2018-10-19  2:32       ` Anshuman Khandual
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   ` Anshuman Khandual
2018-10-12  3:59 ` [PATCH V2 4/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-12  3:59   ` Anshuman Khandual
2018-10-12  3:59 ` [PATCH V2 5/5] arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages Anshuman Khandual
2018-10-12  3:59   ` Anshuman Khandual
2018-10-17  8:19 ` [PATCH V2 0/5] arm64/mm: Enable HugeTLB migration Anshuman Khandual
2018-10-17  8:19   ` Anshuman Khandual
2018-10-19  2:01   ` Naoya Horiguchi
2018-10-19  2:01     ` Naoya Horiguchi
2018-10-19  2:01     ` Naoya Horiguchi

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1539316799-6064-1-git-send-email-anshuman.khandual@arm.com \
    --to=anshuman.khandual@arm.com \
    --cc=Steven.Price@arm.com \
    --cc=akpm@linux-foundation.org \
    --cc=catalin.marinas@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mhocko@kernel.org \
    --cc=mike.kravetz@oracle.com \
    --cc=n-horiguchi@ah.jp.nec.com \
    --cc=punit.agrawal@arm.com \
    --cc=steve.capper@arm.com \
    --cc=suzuki.poulose@arm.com \
    --cc=will.deacon@arm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.