cd34206e94
Add a function to get the maximum address that can be hotplug added. This is needed to calculate the size of the tce table needed to cover all memory in 1:1 mode. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
53 lines
1.2 KiB
C
53 lines
1.2 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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#include <linux/cpumask.h>
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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_var_t node_to_cpumask_map[];
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#ifdef CONFIG_MEMORY_HOTPLUG
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extern unsigned long max_pfn;
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u64 memory_hotplug_max(void);
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#else
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#define memory_hotplug_max() memblock_end_of_DRAM()
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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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#else
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#define memory_hotplug_max() memblock_end_of_DRAM()
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#endif /* CONFIG_NEED_MULTIPLE_NODES */
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#endif /* __KERNEL__ */
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#endif /* _ASM_MMZONE_H_ */
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