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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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b241cb0c88
This adds basic support for multiple nodes on SH machines. This is primarily useful for boards with many different memory blocks that are otherwise unused (SH7722/SH7785 URAM and so forth). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef __ASM_SH_MMZONE_H
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#define __ASM_SH_MMZONE_H
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#ifdef __KERNEL__
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#ifdef CONFIG_NEED_MULTIPLE_NODES
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extern struct pglist_data *node_data[];
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#define NODE_DATA(nid) (node_data[nid])
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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_start_pfn + \
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NODE_DATA(nid)->node_spanned_pages)
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static inline int pfn_to_nid(unsigned long pfn)
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{
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int nid;
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for (nid = 0; nid < MAX_NUMNODES; nid++)
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if (pfn >= node_start_pfn(nid) && pfn <= node_end_pfn(nid))
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break;
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return nid;
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}
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static inline struct pglist_data *pfn_to_pgdat(unsigned long pfn)
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{
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return NODE_DATA(pfn_to_nid(pfn));
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}
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/* arch/sh/mm/numa.c */
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void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end);
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#else
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static inline void
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setup_bootmem_node(int nid, unsigned long start, unsigned long end)
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{
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}
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#endif /* CONFIG_NEED_MULTIPLE_NODES */
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/* Platform specific mem init */
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void __init plat_mem_setup(void);
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/* arch/sh/kernel/setup.c */
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void __init setup_bootmem_allocator(unsigned long start_pfn);
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#endif /* __KERNEL__ */
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#endif /* __ASM_SH_MMZONE_H */
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