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mm: generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS)

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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.

Link: https://lkml.kernel.org/r/1617259448-22529-3-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: Palmer Dabbelt <palmerdabbelt@google.com>	[riscv]
Acked-by: Michael Ellerman <mpe@ellerman.id.au>		[powerpc]
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2021-05-04 18:38:13 -07:00 committed by Linus Torvalds
parent c2280be81d
commit 855f9a8e87
9 changed files with 13 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/arm/Kconfig
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@ -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_USE_MEMTEST
@ -1511,10 +1512,6 @@ 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

4
arch/arm64/Kconfig
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@ -73,6 +73,7 @@ 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
@ -1072,9 +1073,6 @@ config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
config SYS_SUPPORTS_HUGETLBFS
def_bool y
config ARCH_HAS_FILTER_PGPROT
def_bool y

6
arch/mips/Kconfig
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@ -19,6 +19,7 @@ config MIPS
select ARCH_USE_MEMTEST
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
@ -1287,11 +1288,6 @@ 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

5
arch/parisc/Kconfig
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@ -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

3
arch/powerpc/Kconfig
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@ -697,9 +697,6 @@ 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

6
arch/powerpc/platforms/Kconfig.cputype
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@ -40,8 +40,8 @@ config PPC_85xx
config PPC_8xx
bool "Freescale 8xx"
select ARCH_SUPPORTS_HUGETLBFS
select FSL_SOC
select SYS_SUPPORTS_HUGETLBFS
select PPC_HAVE_KUEP
select PPC_HAVE_KUAP
select HAVE_ARCH_VMAP_STACK
@ -95,9 +95,9 @@ config PPC_BOOK3S_64
bool "Server processors"
select PPC_FPU
select PPC_HAVE_PMU_SUPPORT
select SYS_SUPPORTS_HUGETLBFS
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_NUMA_BALANCING
select IRQ_WORK
select PPC_MM_SLICES
@ -278,9 +278,9 @@ config FSL_BOOKE
# this is for common code between PPC32 & PPC64 FSL BOOKE
config PPC_FSL_BOOK3E
bool
select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
select FSL_EMB_PERFMON
select PPC_SMP_MUXED_IPI
select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
select PPC_DOORBELL
default y if FSL_BOOKE

5
arch/riscv/Kconfig
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@ -30,6 +30,7 @@ config RISCV
select ARCH_HAS_STRICT_KERNEL_RWX if MMU
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
select ARCH_SUPPORTS_HUGETLBFS if MMU
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_FRAME_POINTERS
select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
@ -165,10 +166,6 @@ config ARCH_WANT_GENERAL_HUGETLB
config ARCH_SUPPORTS_UPROBES
def_bool y
config SYS_SUPPORTS_HUGETLBFS
depends on MMU
def_bool y
config STACKTRACE_SUPPORT
def_bool y

5
arch/sh/Kconfig
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@ -101,9 +101,6 @@ config SYS_SUPPORTS_APM_EMULATION
bool
select ARCH_SUSPEND_POSSIBLE
config SYS_SUPPORTS_HUGETLBFS
bool
config SYS_SUPPORTS_SMP
bool
@ -175,12 +172,12 @@ config CPU_SH3
config CPU_SH4
bool
select ARCH_SUPPORTS_HUGETLBFS if MMU
select CPU_HAS_INTEVT
select CPU_HAS_SR_RB
select CPU_HAS_FPU if !CPU_SH4AL_DSP
select SH_INTC
select SYS_SUPPORTS_SH_TMU
select SYS_SUPPORTS_HUGETLBFS if MMU
config CPU_SH4A
bool

5
fs/Kconfig
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@ -223,10 +223,13 @@ config TMPFS_INODE64
If unsure, say N.
config ARCH_SUPPORTS_HUGETLBFS
def_bool n
config HUGETLBFS
bool "HugeTLB file system support"
depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
SYS_SUPPORTS_HUGETLBFS || BROKEN
ARCH_SUPPORTS_HUGETLBFS || BROKEN
help
hugetlbfs is a filesystem backing for HugeTLB pages, based on
ramfs. For architectures that support it, say Y here and read