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@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Acked-by: Heiko Carstens <hca@linux.ibm.com>		[s390]
Cc: Will Deacon <will@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 4297fbc..e12fad2 100644 (file)
--- 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
@@ -1074,9 +1075,6 @@ config HW_PERF_EVENTS
 config ARCH_HAS_FILTER_PGPROT
        def_bool y
 
-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 4465b71..be0e29f 100644 (file)
--- 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 f8b3565..d729895 100644 (file)
--- 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 ab581af..0bbc157 100644 (file)
--- 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
@@ -2435,10 +2436,6 @@ 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