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From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: akpm@linux-foundation.org, Andrea Arcangeli <aarcange@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>, Yang Shi <yang.shi@linux.alibaba.com>,
	Ralph Campbell <rcampbell@nvidia.com>,
	John Hubbard <jhubbard@nvidia.com>,
	William Kucharski <william.kucharski@oracle.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCHv4 0/8] thp/khugepaged improvements and CoW semantics
Date: Thu, 16 Apr 2020 19:00:18 +0300	[thread overview]
Message-ID: <20200416160026.16538-1-kirill.shutemov@linux.intel.com> (raw)

The patchset adds khugepaged selftest (anon-THP only for now), expands
cases khugepaged can handle and switches anon-THP copy-on-write handling
to 4k.

Please review and consider applying.

v4:
 - Rebase to v5.7-rc1;
 - Minor adjustments based on feedback: comments/messages/whitespace
 - Apply Reviewed/Acked/Tested-by;
v3:
 - Fix handling compound pages in swap cache;
 - Rework swaped vs. referenced check;
 - Fix refcounting for compound pages;
 - Drop Reviewed-by/Acked-by as patchset changed non-trivially;
 - Typos;
v2:
 - Fix race in compound page handling;
 - Add one more test-case for compound page case;
 - Rework LRU add cache draining;
 - Typos;

Kirill A. Shutemov (8):
  khugepaged: Add self test
  khugepaged: Do not stop collapse if less than half PTEs are referenced
  khugepaged: Drain all LRU caches before scanning pages
  khugepaged: Drain LRU add pagevec after swapin
  khugepaged: Allow to collapse a page shared across fork
  khugepaged: Allow to collapse PTE-mapped compound pages
  thp: Change CoW semantics for anon-THP
  khugepaged: Introduce 'max_ptes_shared' tunable

 Documentation/admin-guide/mm/transhuge.rst |   7 +
 include/trace/events/huge_memory.h         |   3 +-
 mm/huge_memory.c                           | 250 +-----
 mm/khugepaged.c                            | 220 +++--
 tools/testing/selftests/vm/Makefile        |   1 +
 tools/testing/selftests/vm/khugepaged.c    | 982 +++++++++++++++++++++
 6 files changed, 1175 insertions(+), 288 deletions(-)
 create mode 100644 tools/testing/selftests/vm/khugepaged.c

-- 
2.26.1



             reply	other threads:[~2020-04-16 16:01 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-16 16:00 Kirill A. Shutemov [this message]
2020-04-16 16:00 ` [PATCHv4 1/8] khugepaged: Add self test Kirill A. Shutemov
2020-04-16 16:00 ` [PATCHv4 2/8] khugepaged: Do not stop collapse if less than half PTEs are referenced Kirill A. Shutemov
2020-04-16 16:00 ` [PATCHv4 3/8] khugepaged: Drain all LRU caches before scanning pages Kirill A. Shutemov
2020-04-16 16:00 ` [PATCHv4 4/8] khugepaged: Drain LRU add pagevec after swapin Kirill A. Shutemov
2020-04-17  4:41   ` Andrew Morton
2020-04-17 14:59     ` Kirill A. Shutemov
2020-04-16 16:00 ` [PATCHv4 5/8] khugepaged: Allow to collapse a page shared across fork Kirill A. Shutemov
2020-04-16 16:00 ` [PATCHv4 6/8] khugepaged: Allow to collapse PTE-mapped compound pages Kirill A. Shutemov
2020-04-16 16:00 ` [PATCHv4 7/8] thp: Change CoW semantics for anon-THP Kirill A. Shutemov
2020-04-21  0:48   ` [thp] fd80f22b29: vm-scalability.median 10.3% improvement kernel test robot
2020-04-16 16:00 ` [PATCHv4 8/8] khugepaged: Introduce 'max_ptes_shared' tunable Kirill A. Shutemov

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