[PATCH] ppc64: add early_pfn_to_nid
Provide an implementation of early_pfn_to_nid for PPC64. This is used by memory models to determine the node from which to take allocations before the memory allocators are fully initialised. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Martin Bligh <mbligh@aracnet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -211,6 +211,10 @@ config ARCH_FLATMEM_ENABLE
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source "mm/Kconfig"
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config HAVE_ARCH_EARLY_PFN_TO_NID
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bool
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default y
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# Some NUMA nodes have memory ranges that span
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# other nodes. Even though a pfn is valid and
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# between a node's start and end pfns, it may not
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@ -90,4 +90,9 @@ static inline int pa_to_nid(unsigned long pa)
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#define discontigmem_pfn_valid(pfn) ((pfn) < num_physpages)
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#endif /* CONFIG_DISCONTIGMEM */
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#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
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#define early_pfn_to_nid(pfn) pa_to_nid(((unsigned long)pfn) << PAGE_SHIFT)
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#endif
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#endif /* _ASM_MMZONE_H_ */
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