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[POWERPC] Add error return from htab_remove_mapping()
[mirror_ubuntu-artful-kernel.git] / include / asm-powerpc / sparsemem.h
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1#ifndef _ASM_POWERPC_SPARSEMEM_H
2#define _ASM_POWERPC_SPARSEMEM_H 1
88ced031 3#ifdef __KERNEL__
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4
5#ifdef CONFIG_SPARSEMEM
6/*
7 * SECTION_SIZE_BITS 2^N: how big each section will be
8 * MAX_PHYSADDR_BITS 2^N: how much physical address space we have
9 * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
10 */
11#define SECTION_SIZE_BITS 24
261efc3f 12
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13#define MAX_PHYSADDR_BITS 44
14#define MAX_PHYSMEM_BITS 44
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16#ifdef CONFIG_MEMORY_HOTPLUG
17extern void create_section_mapping(unsigned long start, unsigned long end);
52db9b44 18extern int remove_section_mapping(unsigned long start, unsigned long end);
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19#ifdef CONFIG_NUMA
20extern int hot_add_scn_to_nid(unsigned long scn_addr);
21#else
22static inline int hot_add_scn_to_nid(unsigned long scn_addr)
23{
24 return 0;
25}
26#endif /* CONFIG_NUMA */
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27#endif /* CONFIG_MEMORY_HOTPLUG */
28
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29#endif /* CONFIG_SPARSEMEM */
30
88ced031 31#endif /* __KERNEL__ */
1fc8b4ef 32#endif /* _ASM_POWERPC_SPARSEMEM_H */