The patch titled
Subject: mm: drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK
has been added to the -mm tree. Its filename is
mm-drop-redundant-arch_enable_split_pmd_ptlock.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-drop-redundant-arch_enable_split_pmd_ptlock.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-drop-redundant-arch_enable_split_pmd_ptlock.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm: drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK
ARCH_ENABLE_SPLIT_PMD_PTLOCKS has duplicate definitions on platforms that
subscribe it. Drop these redundant definitions and instead just select it
on applicable platforms.
Link: https://lkml.kernel.org/r/1617259448-22529-6-git-send-email-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> (arm64)
Acked-by: Heiko Carstens <hca@xxxxxxxxxxxxx> (s390)
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/Kconfig | 4 +---
arch/powerpc/platforms/Kconfig.cputype | 5 +----
arch/s390/Kconfig | 4 +---
arch/x86/Kconfig | 5 +----
4 files changed, 4 insertions(+), 14 deletions(-)
--- a/arch/arm64/Kconfig~mm-drop-redundant-arch_enable_split_pmd_ptlock
+++ a/arch/arm64/Kconfig
@@ -14,6 +14,7 @@ config ARM64
select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
select ARCH_ENABLE_MEMORY_HOTPLUG
select ARCH_ENABLE_MEMORY_HOTREMOVE
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
@@ -1063,9 +1064,6 @@ config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y if PGTABLE_LEVELS > 2
-
# Supported by clang >= 7.0
config CC_HAVE_SHADOW_CALL_STACK
def_bool $(cc-option, -fsanitize=shadow-call-stack -ffixed-x18)
--- a/arch/powerpc/platforms/Kconfig.cputype~mm-drop-redundant-arch_enable_split_pmd_ptlock
+++ a/arch/powerpc/platforms/Kconfig.cputype
@@ -97,6 +97,7 @@ config PPC_BOOK3S_64
select PPC_HAVE_PMU_SUPPORT
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
+ select ARCH_ENABLE_PMD_SPLIT_PTLOCK
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_NUMA_BALANCING
@@ -356,10 +357,6 @@ config SPE
If in doubt, say Y here.
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y
- depends on PPC_BOOK3S_64
-
config PPC_RADIX_MMU
bool "Radix MMU Support"
depends on PPC_BOOK3S_64
--- a/arch/s390/Kconfig~mm-drop-redundant-arch_enable_split_pmd_ptlock
+++ a/arch/s390/Kconfig
@@ -62,6 +62,7 @@ config S390
select ARCH_BINFMT_ELF_STATE
select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
select ARCH_ENABLE_MEMORY_HOTREMOVE
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -628,9 +629,6 @@ config ARCH_SPARSEMEM_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool y
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y
-
config MAX_PHYSMEM_BITS
int "Maximum size of supported physical memory in bits (42-53)"
range 42 53
--- a/arch/x86/Kconfig~mm-drop-redundant-arch_enable_split_pmd_ptlock
+++ a/arch/x86/Kconfig
@@ -63,6 +63,7 @@ config X86
select ARCH_ENABLE_HUGEPAGE_MIGRATION if x86_64 && HUGETLB_PAGE && MIGRATION
select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK if X86_64 || X86_PAE
select ARCH_ENABLE_THP_MIGRATION if x86_64 && TRANSPARENT_HUGEPAGE
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
select ARCH_HAS_CACHE_LINE_SIZE
@@ -2432,10 +2433,6 @@ config USE_PERCPU_NUMA_NODE_ID
def_bool y
depends on NUMA
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y
- depends on X86_64 || X86_PAE
-
menu "Power management and ACPI options"
config ARCH_HIBERNATION_HEADER
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
mm-generalize-hugetlb_page_size_variable.patch
mm-generalize-arch_has_cache_line_size.patch
mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs.patch
mm-generalize-arch_enable_memory_.patch
mm-drop-redundant-arch_enable__migration.patch
mm-drop-redundant-arch_enable_split_pmd_ptlock.patch
mm-drop-redundant-have_arch_transparent_hugepage.patch
