Navigation: Linux Kernel Driver DataBase - web LKDDB: Main index - A index
The Linux kernel configuration item CONFIG_ARCH_FORCE_MAX_ORDER
has multiple definitions:
arch/xtensa/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
Don't change if unsure.
arch/sparc/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
Don't change if unsure.
arch/sh/mm/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_PAGE_SIZE_16KB ) && ( CONFIG_PAGE_SIZE_64KB ) && (! CONFIG_MMU )
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE:_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option.
Don't change if unsure.
arch/powerpc/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_PPC64 && CONFIG_PPC_64K_PAGES ) && ( CONFIG_PPC64 && ! CONFIG_PPC_64K_PAGES ) && ( CONFIG_PPC32 && CONFIG_PPC_16K_PAGES ) && ( CONFIG_PPC32 && CONFIG_PPC_64K_PAGES ) && ( CONFIG_PPC32 && CONFIG_PPC_256K_PAGES )
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
The page size is not necessarily 4KB. For example, on 64-bit systems, 64KB pages can be enabled via PPC_64K_PAGES. Keep this in mind when choosing a value for this option.
Don't change if unsure.
arch/nios2/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
Don't change if unsure.
arch/m68k/Kconfig.cpu
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_ADVANCED ) && (! CONFIG_SINGLE_MEMORY_CHUNK )
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
For systems that have holes in their physical address space this value also defines the minimal size of the hole that allows freeing unused memory map.
Don't change if unsure.
arch/arm/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_SOC_AM33XX ) && ( CONFIG_SA1111 )
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
Don't change if unsure.
arch/mips/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_MIPS_HUGE_TLB_SUPPORT && CONFIG_PAGE_SIZE_64KB ) && ( CONFIG_MIPS_HUGE_TLB_SUPPORT && CONFIG_PAGE_SIZE_32KB ) && ( CONFIG_MIPS_HUGE_TLB_SUPPORT && CONFIG_PAGE_SIZE_16KB )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option.
arch/loongarch/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_PAGE_SIZE_64KB ) && ( CONFIG_PAGE_SIZE_16KB )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option.
arch/arc/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
CONFIG_ARC_HUGEPAGE_16M
(none)
arch/arm64/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_ARM64_64K_PAGES ) && ( CONFIG_ARM64_16K_PAGES )
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
The maximal size of allocation cannot exceed the size of the section, so the value of MAX_PAGE_ORDER should satisfy
MAX_PAGE_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS
Don't change if unsure.
arch/ia64/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
CONFIG_HUGETLB_PAGE
(none)
arch/arm64/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_EXPERT && ( CONFIG_ARM64_4K_PAGES || CONFIG_ARM64_16K_PAGES )) && ( CONFIG_ARM64_64K_PAGES ) && ( CONFIG_ARM64_16K_PAGES )
The kernel page allocator limits the size of maximal physically contiguous allocations. The limit is called MAX_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required.
The maximal size of allocation cannot exceed the size of the section, so the value of MAX_ORDER should satisfy
MAX_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS
Don't change if unsure.
arch/ia64/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(! CONFIG_HUGETLB_PAGE ) && ( CONFIG_HUGETLB_PAGE )
(none)
arch/xtensa/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
arch/sparc/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 13 means that the largest free memory block is 2^12 pages.
arch/sh/mm/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_PAGE_SIZE_16KB ) && ( CONFIG_PAGE_SIZE_64KB ) && (! CONFIG_MMU )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option.
arch/powerpc/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_PPC64 && CONFIG_PPC_64K_PAGES ) && ( CONFIG_PPC64 && ! CONFIG_PPC_64K_PAGES ) && ( CONFIG_PPC32 && CONFIG_PPC_16K_PAGES ) && ( CONFIG_PPC32 && CONFIG_PPC_64K_PAGES ) && ( CONFIG_PPC32 && CONFIG_PPC_256K_PAGES )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
The page size is not necessarily 4KB. For example, on 64-bit systems, 64KB pages can be enabled via PPC_64K_PAGES. Keep this in mind when choosing a value for this option.
arch/nios2/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
arch/m68k/Kconfig.cpu
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_ADVANCED ) && (! CONFIG_SINGLE_MEMORY_CHUNK )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
For systems that have holes in their physical address space this value also defines the minimal size of the hole that allows freeing unused memory map.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
arch/csky/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
(none)
(none)
arch/arm64/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_ARM64_4K_PAGES || CONFIG_ARM64_16K_PAGES ) && ( CONFIG_ARM64_64K_PAGES ) && ( CONFIG_ARM64_16K_PAGES )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
We make sure that we can allocate up to a HugePage size for each configuration. Hence we have : MAX_ORDER = (PMD_SHIFT - PAGE_SHIFT) + 1 => PAGE_SHIFT - 2
However for 4K, we choose a higher default value, 11 as opposed to 10, giving us 4M allocations matching the default size used by generic code.
arch/arm/Kconfig
The configuration item CONFIG_ARCH_FORCE_MAX_ORDER:
( CONFIG_SOC_AM33XX ) && ( CONFIG_SA1111 )
The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value.
This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages.
Raw data from LKDDb:
(none)
This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).
The data is retrived from:
Popular queries:
Navigation: Linux Kernel Driver DataBase - web LKDDB: main index - A index
Automatically generated (in year 2024). See also LKDDb sources on GitLab