[PATCH v5 00/11] hugetlb: Factorize hugetlb architecture primitives

From: Alexandre Ghiti <alex@ghiti.fr>
To: linux-mm@kvack.org, mike.kravetz@oracle.com,
	linux@armlinux.org.uk, catalin.marinas@arm.com,
	will.deacon@arm.com, tony.luck@intel.com, fenghua.yu@intel.com,
	ralf@linux-mips.org, paul.burton@mips.com, jhogan@kernel.org,
	jejb@parisc-linux.org, deller@gmx.de, benh@kernel.crashing.org,
	paulus@samba.org, mpe@ellerman.id.au, ysato@users.sourceforge.jp,
	dalias@libc.org, davem@davemloft.net, tglx@linutronix.de,
	mingo@redhat.com, hpa@zytor.com, x86@kernel.org, arnd@arndb.de,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org,
	linux-mips@linux-mips.org, linux-parisc@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org,
	sparclinux@vger.kernel.org, linux-arch@vger.kernel.org
Cc: Alexandre Ghiti <alex@ghiti.fr>
Subject: [PATCH v5 00/11] hugetlb: Factorize hugetlb architecture primitives
Date: Tue, 31 Jul 2018 06:01:44 +0000	[thread overview]
Message-ID: <20180731060155.16915-1-alex@ghiti.fr> (raw)

[CC linux-mm for inclusion in -mm tree] 

In order to reduce copy/paste of functions across architectures and then
make riscv hugetlb port (and future ports) simpler and smaller, this
patchset intends to factorize the numerous hugetlb primitives that are
defined across all the architectures.

Except for prepare_hugepage_range, this patchset moves the versions that
are just pass-through to standard pte primitives into
asm-generic/hugetlb.h by using the same #ifdef semantic that can be
found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.

s390 architecture has not been tackled in this serie since it does not
use asm-generic/hugetlb.h at all.
powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).

This patchset has been compiled on all addressed architectures with
success (except for parisc, but the problem does not come from this series). 

Tested-by: Helge Deller <deller@gmx.de> # parisc
Acked-by: Paul Burton <paul.burton@mips.com> # MIPS parts

Changelog:

v5:
  As suggested by Mike Kravetz, no need to move the #include
  <asm-generic/hugetlb.h> for arm and x86 architectures, let it live at
  the top of the file.

v4:
  Fix powerpc build error due to misplacing of #include
  <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
  pointed by Christophe Leroy.

v1, v2, v3:
  Same version, just problems with email provider and misuse of
  --batch-size option of git send-email

Alexandre Ghiti (11):
  hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
  hugetlb: Introduce generic version of hugetlb_free_pgd_range
  hugetlb: Introduce generic version of set_huge_pte_at
  hugetlb: Introduce generic version of huge_ptep_get_and_clear
  hugetlb: Introduce generic version of huge_ptep_clear_flush
  hugetlb: Introduce generic version of huge_pte_none
  hugetlb: Introduce generic version of huge_pte_wrprotect
  hugetlb: Introduce generic version of prepare_hugepage_range
  hugetlb: Introduce generic version of huge_ptep_set_wrprotect
  hugetlb: Introduce generic version of huge_ptep_set_access_flags
  hugetlb: Introduce generic version of huge_ptep_get

 arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
 arch/arm/include/asm/hugetlb.h               | 30 ----------
 arch/arm64/include/asm/hugetlb.h             | 39 +++---------
 arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
 arch/mips/include/asm/hugetlb.h              | 40 +++----------
 arch/parisc/include/asm/hugetlb.h            | 33 +++--------
 arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
 arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
 arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
 arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
 arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
 arch/sh/include/asm/hugetlb.h                | 54 ++---------------
 arch/sparc/include/asm/hugetlb.h             | 40 +++----------
 arch/x86/include/asm/hugetlb.h               | 69 ----------------------
 include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
 15 files changed, 139 insertions(+), 382 deletions(-)

-- 
2.16.2