[POWERPC] Fix MAX_ORDER config problem
The allyesconfig (among others) build was giving this: In file included from include/linux/gfp.h:4, from include/linux/slab.h:14, from include/linux/percpu.h:5, from include2/asm/time.h:18, from include2/asm/cputime.h:26, from include/linux/sched.h:67, from arch/powerpc/kernel/asm-offsets.c:17: include/linux/mmzone.h:791:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE Kconfig options are order depenendent, so move the setting of FORCE_MAX_ZONEORDER to after the setting of PPC_64K_PAGES. Also add an explicit !PPC_64K_PAGES. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -211,26 +211,6 @@ source kernel/Kconfig.hz
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source kernel/Kconfig.preempt
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source "fs/Kconfig.binfmt"
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config FORCE_MAX_ZONEORDER
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int "Maximum zone order"
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default "9" if PPC_64K_PAGES
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default "13" if PPC64
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default "11"
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help
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The kernel memory allocator divides physically contiguous memory
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blocks into "zones", where each zone is a power of two number of
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pages. This option selects the largest power of two that the kernel
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keeps in the memory allocator. If you need to allocate very large
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blocks of physically contiguous memory, then you may need to
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increase this value.
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This config option is actually maximum order plus one. For example,
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a value of 11 means that the largest free memory block is 2^10 pages.
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The page size is not necessarily 4KB. For example, on 64-bit
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systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
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this in mind when choosing a value for this option.
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config HUGETLB_PAGE_SIZE_VARIABLE
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bool
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depends on HUGETLB_PAGE
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@ -403,6 +383,26 @@ config PPC_64K_PAGES
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while on hardware with such support, it will be used to map
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normal application pages.
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config FORCE_MAX_ZONEORDER
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int "Maximum zone order"
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default "9" if PPC_64K_PAGES
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default "13" if PPC64 && !PPC_64K_PAGES
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default "11"
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help
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The kernel memory allocator divides physically contiguous memory
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blocks into "zones", where each zone is a power of two number of
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pages. This option selects the largest power of two that the kernel
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keeps in the memory allocator. If you need to allocate very large
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blocks of physically contiguous memory, then you may need to
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increase this value.
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This config option is actually maximum order plus one. For example,
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a value of 11 means that the largest free memory block is 2^10 pages.
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The page size is not necessarily 4KB. For example, on 64-bit
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systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
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this in mind when choosing a value for this option.
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config PPC_SUBPAGE_PROT
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bool "Support setting protections for 4k subpages"
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depends on PPC_64K_PAGES
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