52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
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*
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* PowerPC64 port:
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* Copyright (C) 2002 Anton Blanchard, IBM Corp.
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*/
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#ifndef _ASM_MMZONE_H_
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#define _ASM_MMZONE_H_
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#ifdef __KERNEL__
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/*
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* generic non-linear memory support:
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*
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* 1) we will not split memory into more chunks than will fit into the
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* flags field of the struct page
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*/
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#ifdef CONFIG_NEED_MULTIPLE_NODES
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extern struct pglist_data *node_data[];
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/*
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* Return a pointer to the node data for node n.
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*/
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#define NODE_DATA(nid) (node_data[nid])
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/*
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* Following are specific to this numa platform.
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*/
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extern int numa_cpu_lookup_table[];
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extern cpumask_t numa_cpumask_lookup_table[];
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#ifdef CONFIG_MEMORY_HOTPLUG
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extern unsigned long max_pfn;
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#endif
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/*
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* Following are macros that each numa implmentation must define.
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*/
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#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
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#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
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#endif /* CONFIG_NEED_MULTIPLE_NODES */
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#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
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extern int __init early_pfn_to_nid(unsigned long pfn);
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#endif
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#endif /* __KERNEL__ */
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#endif /* _ASM_MMZONE_H_ */
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