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* [RFC PATCH 0/3] Add PUD and kernel PTE level pagetable account
@ 2022-06-04  1:32 Baolin Wang
  2022-06-04  1:32 ` [RFC PATCH 1/3] mm: Factor out the pagetable pages account into new helper function Baolin Wang
                   ` (2 more replies)
  0 siblings, 3 replies; 22+ messages in thread
From: Baolin Wang @ 2022-06-04  1:32 UTC (permalink / raw)
  To: akpm; +Cc: baolin.wang, linux-mm, linux-kernel

Hi,

Now we will miss to account the PUD level pagetable and kernel PTE level
pagetable, as well as missing to set the PG_table flags for these pagetable
pages, which will get an inaccurate pagetable accounting, and miss
PageTable() validation in some cases. So this patch set introduces 2 new
helpers to help to account PUD and kernel PTE pagetable pages.

Note there are still some architectures specific pagetable allocation
that need to account the pagetable pages, which need more investigation
and cleanup in future. Please help to review. Thanks.

Baolin Wang (3):
  mm: Factor out the pagetable pages account into new helper function
  mm: Add PUD level pagetable account
  mm: Add kernel PTE level pagetable pages account

 arch/arm64/include/asm/tlb.h    |  5 ++++-
 arch/csky/include/asm/pgalloc.h |  2 +-
 arch/microblaze/mm/pgtable.c    |  2 +-
 arch/mips/include/asm/pgalloc.h | 11 ++++++++---
 arch/openrisc/mm/ioremap.c      |  2 +-
 arch/s390/include/asm/tlb.h     |  1 +
 arch/x86/mm/pgtable.c           |  3 +++
 include/asm-generic/pgalloc.h   | 18 ++++++++++++++++--
 include/linux/mm.h              | 24 ++++++++++++++++--------
 9 files changed, 51 insertions(+), 17 deletions(-)

-- 
1.8.3.1


^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2022-06-10  3:59 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-04  1:32 [RFC PATCH 0/3] Add PUD and kernel PTE level pagetable account Baolin Wang
2022-06-04  1:32 ` [RFC PATCH 1/3] mm: Factor out the pagetable pages account into new helper function Baolin Wang
2022-06-04  1:32 ` [RFC PATCH 2/3] mm: Add PUD level pagetable account Baolin Wang
2022-06-04  1:32 ` [RFC PATCH 3/3] mm: Add kernel PTE level pagetable pages account Baolin Wang
2022-06-08 14:38   ` [mm] 9b12e49e9b: BUG:Bad_page_state_in_process kernel test robot
2022-06-08 14:38     ` kernel test robot
2022-06-08 14:38     ` kernel test robot
2022-06-08 15:07     ` Matthew Wilcox
2022-06-08 15:07       ` Matthew Wilcox
2022-06-08 15:07       ` Matthew Wilcox
2022-06-09  4:45       ` Baolin Wang
2022-06-09  4:45         ` Baolin Wang
2022-06-09  4:45         ` Baolin Wang
2022-06-09  4:42     ` Baolin Wang
2022-06-09  4:42       ` Baolin Wang
2022-06-09  4:42       ` Baolin Wang
2022-06-09 12:18       ` Matthew Wilcox
2022-06-09 12:18         ` Matthew Wilcox
2022-06-09 12:18         ` Matthew Wilcox
2022-06-10  3:58         ` Baolin Wang
2022-06-10  3:58           ` Baolin Wang
2022-06-10  3:58           ` Baolin Wang

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