[PATCH V2 2/6] mm: Generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS)
From: Anshuman Khandual <hidden>
Date: 2021-04-01 06:45:27
Also in:
linux-arm-kernel, linux-riscv
Subsystem:
arm port, arm64 port (aarch64 architecture), filesystems (vfs and infrastructure), linux for powerpc (32-bit and 64-bit), mips, parisc architecture, risc-v architecture, superh, the rest · Maintainers:
Russell King, Catalin Marinas, Will Deacon, Alexander Viro, Christian Brauner, Madhavan Srinivasan, Thomas Bogendoerfer, "James E.J. Bottomley", Helge Deller, Paul Walmsley, Palmer Dabbelt, Albert Ou, Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Linus Torvalds
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 <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> 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: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <redacted> Cc: Paul Walmsley <redacted> Cc: Palmer Dabbelt <palmer@dabbelt.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: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-sh@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64) Acked-by: Palmer Dabbelt <redacted> (riscv) Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Signed-off-by: Anshuman Khandual <redacted> --- 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 5da96f5df48f..e12d9d1f4892 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
@@ -1504,10 +1505,6 @@ 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 75a1af6cef9e..c86b28ef6ac0 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
@@ -1063,9 +1064,6 @@ config HW_PERF_EVENTS def_bool y depends on ARM_PMU -config SYS_SUPPORTS_HUGETLBFS - def_bool y - config ARCH_ENABLE_SPLIT_PMD_PTLOCK def_bool y if PGTABLE_LEVELS > 2
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 afc3b8d03572..bde9907bc5b2 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/platforms/Kconfig.cputype@@ -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
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 87d7b52f278f..440b75adeb1c 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig@@ -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
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index e798e55915c2..a54b0c5de37b 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig@@ -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
diff --git a/fs/Kconfig b/fs/Kconfig
index a55bda4233bb..366a603ad947 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig@@ -222,10 +222,13 @@ 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
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2.20.1