Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef _ASM_POWERPC_SPARSEMEM_H
2#define _ASM_POWERPC_SPARSEMEM_H 1
3#ifdef __KERNEL__
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
12
13#define MAX_PHYSADDR_BITS 44
14#define MAX_PHYSMEM_BITS 44
15
16#ifdef CONFIG_MEMORY_HOTPLUG
17extern void create_section_mapping(unsigned long start, unsigned long end);
18extern int remove_section_mapping(unsigned long start, unsigned long end);
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 */
27#endif /* CONFIG_MEMORY_HOTPLUG */
28
29#endif /* CONFIG_SPARSEMEM */
30
31#endif /* __KERNEL__ */
32#endif /* _ASM_POWERPC_SPARSEMEM_H */