linux-kernel - [PATCH v2 00/17] Reduce ifdef mess in hugetlbpage.c

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Date:   Fri, 26 Apr 2019 05:59:35 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        aneesh.kumar@...ux.ibm.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 00/17] Reduce ifdef mess in hugetlbpage.c

This is a split out of v1 series "Reduce ifdef mess in hugetlbpage.c and slice.c"

The main purpose of this series is to reduce the amount of #ifdefs in
hugetlbpage.c by moving subarch specific stuff in dedicated header files.

This series also drops all CONFIG_PPC_64K_PAGES related code in book3e
as it cannot be selected.

Compile test at http://kisskb.ellerman.id.au/kisskb/head/74280b305020ab2c50efe383d37fccff009e6b84/

Christophe Leroy (17):
  powerpc/mm: Don't BUG() in hugepd_page()
  powerpc/mm: don't BUG in add_huge_page_size()
  powerpc/book3e: drop mmu_get_tsize()
  powerpc/64: only book3s/64 supports CONFIG_PPC_64K_PAGES
  powerpc/book3e: hugetlbpage is only for CONFIG_PPC_FSL_BOOK3E
  powerpc/mm: move __find_linux_pte() out of hugetlbpage.c
  powerpc/mm: make hugetlbpage.c depend on CONFIG_HUGETLB_PAGE
  powerpc/mm: make gup_hugepte() static
  powerpc/mm: split asm/hugetlb.h into dedicated subarch files
  powerpc/mm: add a helper to populate hugepd
  powerpc/mm: cleanup ifdef mess in add_huge_page_size()
  powerpc/mm: move hugetlb_disabled into asm/hugetlb.h
  powerpc/mm: cleanup HPAGE_SHIFT setup
  powerpc/mm: cleanup remaining ifdef mess in hugetlbpage.c
  powerpc/mm: flatten function __find_linux_pte() step 1
  powerpc/mm: flatten function __find_linux_pte() step 2
  powerpc/mm: flatten function __find_linux_pte() step 3

 arch/powerpc/Kconfig                             |   3 +-
 arch/powerpc/include/asm/book3s/64/hugetlb.h     |  72 +++++++
 arch/powerpc/include/asm/hugetlb.h               |  87 +-------
 arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h |  44 +++++
 arch/powerpc/include/asm/nohash/64/pgalloc.h     |   3 -
 arch/powerpc/include/asm/nohash/64/pgtable.h     |   4 -
 arch/powerpc/include/asm/nohash/hugetlb-book3e.h |  45 +++++
 arch/powerpc/include/asm/nohash/pte-book3e.h     |   5 -
 arch/powerpc/include/asm/page.h                  |  12 +-
 arch/powerpc/include/asm/pgtable-be-types.h      |   9 +-
 arch/powerpc/include/asm/pgtable-types.h         |   9 +-
 arch/powerpc/include/asm/pgtable.h               |   3 -
 arch/powerpc/include/asm/task_size_64.h          |   2 +-
 arch/powerpc/kernel/fadump.c                     |   1 +
 arch/powerpc/mm/Makefile                         |   4 +-
 arch/powerpc/mm/hash_utils_64.c                  |   1 +
 arch/powerpc/mm/hugetlbpage-book3e.c             |  52 ++---
 arch/powerpc/mm/hugetlbpage-hash64.c             |  16 ++
 arch/powerpc/mm/hugetlbpage.c                    | 240 +++--------------------
 arch/powerpc/mm/pgtable.c                        | 114 +++++++++++
 arch/powerpc/mm/tlb_low_64e.S                    |  31 ---
 arch/powerpc/mm/tlb_nohash.c                     |  13 --
 22 files changed, 366 insertions(+), 404 deletions(-)
 create mode 100644 arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h
 create mode 100644 arch/powerpc/include/asm/nohash/hugetlb-book3e.h

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2.13.3