[PATCH 2/6] mm: Generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS)

2021-03-07 Thread Anshuman Khandual
SYS_SUPPORTS_HUGETLBFS config has duplicate definitions on platforms that
subscribe it. Instead, just make it a generic option which can be selected
on applicable platforms. Also rename it as ARCH_SUPPORTS_HUGETLBFS instead.
This reduces code duplication and makes it cleaner.

Cc: Russell King 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Thomas Bogendoerfer 
Cc: "James E.J. Bottomley" 
Cc: Helge Deller 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Paul Walmsley 
Cc: Palmer Dabbelt 
Cc: Albert Ou 
Cc: Yoshinori Sato 
Cc: Rich Felker 
Cc: Alexander Viro 
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-m...@vger.kernel.org
Cc: linux-par...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-ri...@lists.infradead.org
Cc: linux...@vger.kernel.org
Cc: linux-fsde...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual 
---
 arch/arm/Kconfig   | 5 +
 arch/arm64/Kconfig | 4 +---
 arch/mips/Kconfig  | 6 +-
 arch/parisc/Kconfig| 5 +
 arch/powerpc/Kconfig   | 3 ---
 arch/powerpc/platforms/Kconfig.cputype | 6 +++---
 arch/riscv/Kconfig | 5 +
 arch/sh/Kconfig| 5 +
 fs/Kconfig | 5 -
 9 files changed, 13 insertions(+), 31 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 853aab5ab327..d612d2be6859 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -31,6 +31,7 @@ config ARM
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7
select ARCH_SUPPORTS_ATOMIC_RMW
+   select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
@@ -1503,10 +1504,6 @@ config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
 
-config SYS_SUPPORTS_HUGETLBFS
-   def_bool y
-   depends on ARM_LPAE
-
 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
def_bool y
depends on ARM_LPAE
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 606a2323e002..68fe3b5bf17a 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -72,6 +72,7 @@ config ARM64
select ARCH_USE_QUEUED_SPINLOCKS
select ARCH_USE_SYM_ANNOTATIONS
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
+   select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_MEMORY_FAILURE
select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK
select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN
@@ -1053,9 +1054,6 @@ config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
 
-config SYS_SUPPORTS_HUGETLBFS
-   def_bool y
-
 config ARCH_WANT_HUGE_PMD_SHARE
 
 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index d89efba3d8a4..73ea9b7558c1 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -16,6 +16,7 @@ config MIPS
select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS
+   select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_WANT_LD_ORPHAN_WARN
@@ -1281,11 +1282,6 @@ config SYS_SUPPORTS_BIG_ENDIAN
 config SYS_SUPPORTS_LITTLE_ENDIAN
bool
 
-config SYS_SUPPORTS_HUGETLBFS
-   bool
-   depends on CPU_SUPPORTS_HUGEPAGES
-   default y
-
 config MIPS_HUGE_TLB_SUPPORT
def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
 
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 4e53ac46e857..4ce68e640474 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -12,6 +12,7 @@ config PARISC
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_NO_SG_CHAIN
+   select ARCH_SUPPORTS_HUGETLBFS if PA20
select ARCH_SUPPORTS_MEMORY_FAILURE
select DMA_OPS
select RTC_CLASS
@@ -138,10 +139,6 @@ config PGTABLE_LEVELS
default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
default 2
 
-config SYS_SUPPORTS_HUGETLBFS
-   def_bool y if PA20
-
-
 menu "Processor type and features"
 
 choice
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 386ae12d8523..a74c211e55b1 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -700,9 +700,6 @@ config ARCH_SPARSEMEM_DEFAULT
def_bool y
depends on PPC_BOOK3S_64
 
-config SYS_SUPPORTS_HUGETLBFS
-   bool
-
 config ILLEGAL_POINTER_VALUE
hex
# This is roughly half way between the top of user space and the bottom
diff --git a/arch/powerpc/platforms/Kconfig.cputype 
b/arch/powerpc/platforms/Kconfig.cputype
index 3ce907523b1e..cec1017813f8 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platfor

[PATCH 0/6] mm: some config cleanups

2021-03-07 Thread Anshuman Khandual
This series contains config cleanup patches which reduces code duplication
across platforms and also improves maintainability. There is no functional
change intended with this series. This has been boot tested on arm64 but
only build tested on some other platforms.

This applies on 5.12-rc2

Cc: x...@kernel.org
Cc: linux-i...@vger.kernel.org
Cc: linux-s...@vger.kernel.org
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-m...@vger.kernel.org
Cc: linux-par...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-ri...@lists.infradead.org
Cc: linux...@vger.kernel.org
Cc: linux-fsde...@vger.kernel.org
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org

Anshuman Khandual (6):
  mm: Generalize ARCH_HAS_CACHE_LINE_SIZE
  mm: Generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS)
  mm: Generalize ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE]
  mm: Drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION
  mm: Drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK
  mm: Drop redundant HAVE_ARCH_TRANSPARENT_HUGEPAGE

 arch/arc/Kconfig   |  9 ++--
 arch/arm/Kconfig   | 10 ++---
 arch/arm64/Kconfig | 30 ++
 arch/ia64/Kconfig  |  8 ++-
 arch/mips/Kconfig  |  6 +-
 arch/parisc/Kconfig|  5 +
 arch/powerpc/Kconfig   | 11 ++
 arch/powerpc/platforms/Kconfig.cputype | 16 +-
 arch/riscv/Kconfig |  5 +
 arch/s390/Kconfig  | 12 +++
 arch/sh/Kconfig|  7 +++---
 arch/sh/mm/Kconfig |  8 ---
 arch/x86/Kconfig   | 29 ++---
 fs/Kconfig |  5 -
 mm/Kconfig |  9 
 15 files changed, 48 insertions(+), 122 deletions(-)

-- 
2.20.1


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[PATCH 3/6] mm: Generalize ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE]

2021-03-07 Thread Anshuman Khandual
ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE] configs have duplicate definitions
on platforms that subscribe them. Instead, just make them generic options
which can be selected on applicable platforms.

Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Heiko Carstens 
Cc: Vasily Gorbik 
Cc: Christian Borntraeger 
Cc: Yoshinori Sato 
Cc: Rich Felker 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: x...@kernel.org
Cc: "H. Peter Anvin" 
Cc: Andrew Morton 
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-i...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-s...@vger.kernel.org
Cc: linux...@vger.kernel.org
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual 
---
 arch/arm64/Kconfig   |  8 ++--
 arch/ia64/Kconfig|  8 ++--
 arch/powerpc/Kconfig |  8 ++--
 arch/s390/Kconfig|  8 ++--
 arch/sh/Kconfig  |  2 ++
 arch/sh/mm/Kconfig   |  8 
 arch/x86/Kconfig | 10 ++
 mm/Kconfig   |  6 ++
 8 files changed, 18 insertions(+), 40 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 68fe3b5bf17a..67e904b0f32a 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -11,6 +11,8 @@ config ARM64
select ACPI_PPTT if ACPI
select ARCH_HAS_DEBUG_WX
select ARCH_BINFMT_ELF_STATE
+   select ARCH_ENABLE_MEMORY_HOTPLUG
+   select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
@@ -305,12 +307,6 @@ config ZONE_DMA32
bool "Support DMA32 zone" if EXPERT
default y
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-   def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-   def_bool y
-
 config SMP
def_bool y
 
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 2ad7a8d29fcc..96ce53ad5c9d 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -13,6 +13,8 @@ config IA64
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
select ACPI_NUMA if NUMA
+   select ARCH_ENABLE_MEMORY_HOTPLUG
+   select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_SUPPORTS_ACPI
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
@@ -250,12 +252,6 @@ config HOTPLUG_CPU
  can be controlled through /sys/devices/system/cpu/cpu#.
  Say N if you want to disable CPU hotplug.
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-   def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-   def_bool y
-
 config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a74c211e55b1..02a05a24659d 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -118,6 +118,8 @@ config PPC
# Please keep this list sorted alphabetically.
#
select ARCH_32BIT_OFF_T if PPC32
+   select ARCH_ENABLE_MEMORY_HOTPLUG
+   select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
@@ -515,12 +517,6 @@ config ARCH_CPU_PROBE_RELEASE
def_bool y
depends on HOTPLUG_CPU
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-   def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-   def_bool y
-
 config PPC64_SUPPORTS_MEMORY_FAILURE
bool "Add support for memory hwpoison"
depends on PPC_BOOK3S_64
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index c1ff874e6c2e..f8b356550daa 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -60,6 +60,8 @@ config S390
imply IMA_SECURE_AND_OR_TRUSTED_BOOT
select ARCH_32BIT_USTAT_F_TINODE
select ARCH_BINFMT_ELF_STATE
+   select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
+   select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -626,12 +628,6 @@ config ARCH_SPARSEMEM_ENABLE
 config ARCH_SPARSEMEM_DEFAULT
def_bool y
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-   def_bool y if SPARSEMEM
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-   def_bool y
-
 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
def_bool y
 
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index a54b0c5de37b..68129537e350 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -2,6 +2,8 @@
 config SUPERH
def_bool y
select ARCH_32BIT_OFF_T
+   select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
+   select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
select ARCH_HAS_BINFMT_FLAT if !MMU
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 77aa2f802d8d..d551a9cac41e 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -136,14 +136,6 @@ config ARCH_SPARSEMEM_DEFAULT
 config ARCH_SELECT_MEMO

[PATCH 5/6] mm: Drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK

2021-03-07 Thread Anshuman Khandual
ARCH_ENABLE_SPLIT_PMD_PTLOCKS has duplicate definitions on platforms that
subscribe it. Drop these reduntant definitions and instead just select it
on applicable platforms.

Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Heiko Carstens 
Cc: Vasily Gorbik 
Cc: Christian Borntraeger 
Cc: Yoshinori Sato 
Cc: Rich Felker 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: x...@kernel.org
Cc: "H. Peter Anvin" 
Cc: Andrew Morton 
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-i...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-s...@vger.kernel.org
Cc: linux...@vger.kernel.org
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual 
---
 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(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index c0e75f62f08c..fb5b1630a4eb 100644
--- a/arch/arm64/Kconfig
+++ b/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
@@ -1054,9 +1055,6 @@ config HW_PERF_EVENTS
 
 config ARCH_WANT_HUGE_PMD_SHARE
 
-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)
diff --git a/arch/powerpc/platforms/Kconfig.cputype 
b/arch/powerpc/platforms/Kconfig.cputype
index 4465b71b2bff..be0e29f18dd4 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/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
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index f8b356550daa..d72989591223 100644
--- a/arch/s390/Kconfig
+++ b/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
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 10702ef1eb57..5dd70c798167 100644
--- a/arch/x86/Kconfig
+++ b/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
@@ -2431,10 +2432,6 @@ 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
-- 
2.20.1


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[PATCH 1/6] mm: Generalize ARCH_HAS_CACHE_LINE_SIZE

2021-03-07 Thread Anshuman Khandual
ARCH_HAS_CACHE_LINE_SIZE config has duplicate definitions on platforms that
subscribe it. Instead, just make it a generic option which can be selected
on applicable platforms. This change reduces code duplication and makes it
cleaner.

Cc: Vineet Gupta 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Borislav Petkov 
Cc: "H. Peter Anvin" 
Cc: Andrew Morton 
Cc: x...@kernel.org
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual 
---
 arch/arc/Kconfig   | 4 +---
 arch/arm64/Kconfig | 4 +---
 arch/x86/Kconfig   | 4 +---
 mm/Kconfig | 3 +++
 4 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index bc8d6aecfbbd..fab05f7189c0 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -6,6 +6,7 @@
 config ARC
def_bool y
select ARC_TIMERS
+   select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DMA_PREP_COHERENT
select ARCH_HAS_PTE_SPECIAL
@@ -48,9 +49,6 @@ config ARC
select HAVE_ARCH_JUMP_LABEL if ISA_ARCV2 && !CPU_ENDIAN_BE32
select SET_FS
 
-config ARCH_HAS_CACHE_LINE_SIZE
-   def_bool y
-
 config TRACE_IRQFLAGS_SUPPORT
def_bool y
 
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1f212b47a48a..606a2323e002 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -11,6 +11,7 @@ config ARM64
select ACPI_PPTT if ACPI
select ARCH_HAS_DEBUG_WX
select ARCH_BINFMT_ELF_STATE
+   select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DMA_PREP_COHERENT
@@ -1057,9 +1058,6 @@ config SYS_SUPPORTS_HUGETLBFS
 
 config ARCH_WANT_HUGE_PMD_SHARE
 
-config ARCH_HAS_CACHE_LINE_SIZE
-   def_bool y
-
 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
def_bool y if PGTABLE_LEVELS > 2
 
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2792879d398e..51d171abb57a 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -61,6 +61,7 @@ config X86
select ARCH_32BIT_OFF_T if X86_32
select ARCH_CLOCKSOURCE_INIT
select ARCH_HAS_ACPI_TABLE_UPGRADE  if ACPI
+   select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLEif !X86_PAE
select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -313,9 +314,6 @@ config GENERIC_CALIBRATE_DELAY
 config ARCH_HAS_CPU_RELAX
def_bool y
 
-config ARCH_HAS_CACHE_LINE_SIZE
-   def_bool y
-
 config ARCH_HAS_FILTER_PGPROT
def_bool y
 
diff --git a/mm/Kconfig b/mm/Kconfig
index 24c045b24b95..1c9a37fc651a 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -760,6 +760,9 @@ config IDLE_PAGE_TRACKING
  See Documentation/admin-guide/mm/idle_page_tracking.rst for
  more details.
 
+config ARCH_HAS_CACHE_LINE_SIZE
+   bool
+
 config ARCH_HAS_PTE_DEVMAP
bool
 
-- 
2.20.1


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[PATCH 4/6] mm: Drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION

2021-03-07 Thread Anshuman Khandual
ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION configs have duplicate definitions on
platforms that subscribe them. Drop these reduntant definitions and instead
just select them appropriately.

Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Cc: Andrew Morton 
Cc: x...@kernel.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual 
---
 arch/arm64/Kconfig | 10 ++
 arch/powerpc/platforms/Kconfig.cputype |  5 +
 arch/x86/Kconfig   | 10 ++
 3 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 67e904b0f32a..c0e75f62f08c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -11,8 +11,10 @@ config ARM64
select ACPI_PPTT if ACPI
select ARCH_HAS_DEBUG_WX
select ARCH_BINFMT_ELF_STATE
+   select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
select ARCH_ENABLE_MEMORY_HOTPLUG
select ARCH_ENABLE_MEMORY_HOTREMOVE
+   select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
@@ -1903,14 +1905,6 @@ config SYSVIPC_COMPAT
def_bool y
depends on COMPAT && SYSVIPC
 
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
-   def_bool y
-   depends on HUGETLB_PAGE && MIGRATION
-
-config ARCH_ENABLE_THP_MIGRATION
-   def_bool y
-   depends on TRANSPARENT_HUGEPAGE
-
 menu "Power management options"
 
 source "kernel/power/Kconfig"
diff --git a/arch/powerpc/platforms/Kconfig.cputype 
b/arch/powerpc/platforms/Kconfig.cputype
index cec1017813f8..4465b71b2bff 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -96,6 +96,7 @@ config PPC_BOOK3S_64
select PPC_FPU
select PPC_HAVE_PMU_SUPPORT
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+   select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_NUMA_BALANCING
@@ -420,10 +421,6 @@ config PPC_PKEY
depends on PPC_BOOK3S_64
depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP
 
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
-   def_bool y
-   depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
-
 
 config PPC_MMU_NOHASH
def_bool y
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 503d8b2e8676..10702ef1eb57 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -60,8 +60,10 @@ config X86
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ARCH_32BIT_OFF_T if X86_32
select ARCH_CLOCKSOURCE_INIT
+   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_THP_MIGRATION if x86_64 && TRANSPARENT_HUGEPAGE
select ARCH_HAS_ACPI_TABLE_UPGRADE  if ACPI
select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
@@ -2433,14 +2435,6 @@ config ARCH_ENABLE_SPLIT_PMD_PTLOCK
def_bool y
depends on X86_64 || X86_PAE
 
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
-   def_bool y
-   depends on X86_64 && HUGETLB_PAGE && MIGRATION
-
-config ARCH_ENABLE_THP_MIGRATION
-   def_bool y
-   depends on X86_64 && TRANSPARENT_HUGEPAGE
-
 menu "Power management and ACPI options"
 
 config ARCH_HIBERNATION_HEADER
-- 
2.20.1


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[PATCH 6/6] mm: Drop redundant HAVE_ARCH_TRANSPARENT_HUGEPAGE

2021-03-07 Thread Anshuman Khandual
HAVE_ARCH_TRANSPARENT_HUGEPAGE has duplicate definitions on platforms that
subscribe it. Drop these reduntant definitions and instead just select it
on applicable platforms.

Cc: Vineet Gupta 
Cc: Russell King 
Cc: Arnd Bergmann 
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual 
---
 arch/arc/Kconfig | 5 +
 arch/arm/Kconfig | 5 +
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index fab05f7189c0..2d98501c0897 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -29,6 +29,7 @@ config ARC
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
+   select HAVE_ARCH_TRANSPARENT_HUGEPAGE if ARC_MMU_V4
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_DEBUG_KMEMLEAK
select HAVE_FUTEX_CMPXCHG if FUTEX
@@ -84,10 +85,6 @@ config STACKTRACE_SUPPORT
def_bool y
select STACKTRACE
 
-config HAVE_ARCH_TRANSPARENT_HUGEPAGE
-   def_bool y
-   depends on ARC_MMU_V4
-
 menu "ARC Architecture Configuration"
 
 menu "ARC Platform/SoC/Board"
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d612d2be6859..cd071e3319ba 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -77,6 +77,7 @@ config ARM
select HAVE_ARCH_SECCOMP_FILTER if AEABI && !OABI_COMPAT
select HAVE_ARCH_THREAD_STRUCT_WHITELIST
select HAVE_ARCH_TRACEHOOK
+   select HAVE_ARCH_TRANSPARENT_HUGEPAGE if ARM_LPAE
select HAVE_ARM_SMCCC if CPU_V7
select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32
select HAVE_CONTEXT_TRACKING
@@ -1504,10 +1505,6 @@ config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
 
-config HAVE_ARCH_TRANSPARENT_HUGEPAGE
-   def_bool y
-   depends on ARM_LPAE
-
 config ARCH_WANT_GENERAL_HUGETLB
def_bool y
 
-- 
2.20.1


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