diff options
Diffstat (limited to 'arch/nios2/Kconfig')
| -rw-r--r-- | arch/nios2/Kconfig | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index a582f72104f3..e5936417d3cd 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -45,19 +45,17 @@ menu "Kernel features" source "kernel/Kconfig.hz" config ARCH_FORCE_MAX_ORDER - int "Maximum zone order" - range 9 20 - default "11" + int "Order of maximal physically contiguous allocations" + default "10" help - 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 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. + + Don't change if unsure. endmenu |