linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
* [PATCHv4 0/8] thp/khugepaged improvements and CoW semantics
@ 2020-04-16 16:00 Kirill A. Shutemov
  2020-04-16 16:00 ` [PATCHv4 1/8] khugepaged: Add self test Kirill A. Shutemov
                   ` (7 more replies)
  0 siblings, 8 replies; 12+ messages in thread
From: Kirill A. Shutemov @ 2020-04-16 16:00 UTC (permalink / raw)
  To: akpm, Andrea Arcangeli
  Cc: Zi Yan, Yang Shi, Ralph Campbell, John Hubbard,
	William Kucharski, linux-mm, linux-kernel, Kirill A. Shutemov

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



^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2020-04-21  0:49 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-16 16:00 [PATCHv4 0/8] thp/khugepaged improvements and CoW semantics Kirill A. Shutemov
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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).