Commit b2a37fb2 authored by Mike Rapoport (IBM)'s avatar Mike Rapoport (IBM) Committed by Andrew Morton

sh: reword ARCH_FORCE_MAX_ORDER prompt and help text

The prompt and help text of ARCH_FORCE_MAX_ORDER are not even close to
describe this configuration option.

Update both to actually describe what this option does.

[rppt@kernel.org: tweak ARCH_FORCE_MAX_ORDER's `range']
  Link: https://lkml.kernel.org/r/20230325060828.2662773-12-rppt@kernel.org
Link: https://lkml.kernel.org/r/20230324052233.2654090-12-rppt@kernel.orgSigned-off-by: default avatarMike Rapoport (IBM) <rppt@kernel.org>
Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: default avatarZi Yan <ziy@nvidia.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Rich Felker <dalias@libc.org>
Cc: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 1e8fed87
...@@ -19,7 +19,7 @@ config PAGE_OFFSET ...@@ -19,7 +19,7 @@ config PAGE_OFFSET
default "0x00000000" default "0x00000000"
config ARCH_FORCE_MAX_ORDER config ARCH_FORCE_MAX_ORDER
int "Maximum zone order" int "Order of maximal physically contiguous allocations"
range 8 63 if PAGE_SIZE_16KB range 8 63 if PAGE_SIZE_16KB
default "8" if PAGE_SIZE_16KB default "8" if PAGE_SIZE_16KB
range 6 63 if PAGE_SIZE_64KB range 6 63 if PAGE_SIZE_64KB
...@@ -28,16 +28,18 @@ config ARCH_FORCE_MAX_ORDER ...@@ -28,16 +28,18 @@ config ARCH_FORCE_MAX_ORDER
default "13" if !MMU default "13" if !MMU
default "10" default "10"
help help
The kernel memory allocator divides physically contiguous memory The kernel page allocator limits the size of maximal physically
blocks into "zones", where each zone is a power of two number of contiguous allocations. The limit is called MAX_ORDER and it
pages. This option selects the largest power of two that the kernel defines the maximal power of two of number of pages that can be
keeps in the memory allocator. If you need to allocate very large allocated as a single contiguous block. This option allows
blocks of physically contiguous memory, then you may need to overriding the default setting when ability to allocate very
increase this value. large blocks of physically contiguous memory is required.
The page size is not necessarily 4KB. Keep this in mind when The page size is not necessarily 4KB. Keep this in mind when
choosing a value for this option. choosing a value for this option.
Don't change if unsure.
config MEMORY_START config MEMORY_START
hex "Physical memory start address" hex "Physical memory start address"
default "0x08000000" default "0x08000000"
......
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