diff options
Diffstat (limited to 'arch/sh/mm/Kconfig')
| -rw-r--r-- | arch/sh/mm/Kconfig | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index d4079cab2d58..2795618e4f07 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -21,6 +21,29 @@ config PAGE_OFFSET default "0x20000000" if MMU && SUPERH64 default "0x00000000" +config FORCE_MAX_ZONEORDER + int "Maximum zone order" + range 9 64 if PAGE_SIZE_16KB + default "9" if PAGE_SIZE_16KB + range 7 64 if PAGE_SIZE_64KB + default "7" if PAGE_SIZE_64KB + range 11 64 + default "14" if !MMU + default "11" + 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 page size is not necessarily 4KB. Keep this in mind when + choosing a value for this option. + config MEMORY_START hex "Physical memory start address" default "0x08000000" @@ -201,14 +224,6 @@ config PAGE_SIZE_64KB endchoice -config ENTRY_OFFSET - hex - default "0x00001000" if PAGE_SIZE_4KB - default "0x00002000" if PAGE_SIZE_8KB - default "0x00004000" if PAGE_SIZE_16KB - default "0x00010000" if PAGE_SIZE_64KB - default "0x00000000" - choice prompt "HugeTLB page size" depends on HUGETLB_PAGE && (CPU_SH4 || CPU_SH5) && MMU |