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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_SPARSEMEM_H
3#define _ASM_POWERPC_SPARSEMEM_H 1
4#ifdef __KERNEL__
5
6#ifdef CONFIG_SPARSEMEM
7/*
8 * SECTION_SIZE_BITS 2^N: how big each section will be
9 * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
10 */
11#define SECTION_SIZE_BITS 24
12
13#endif /* CONFIG_SPARSEMEM */
14
15#ifdef CONFIG_MEMORY_HOTPLUG
16extern int create_section_mapping(unsigned long start, unsigned long end,
17 int nid, pgprot_t prot);
18extern int remove_section_mapping(unsigned long start, unsigned long end);
19
20#ifdef CONFIG_PPC_BOOK3S_64
21extern int resize_hpt_for_hotplug(unsigned long new_mem_size);
22#else
23static inline int resize_hpt_for_hotplug(unsigned long new_mem_size) { return 0; }
24#endif
25
26#ifdef CONFIG_NUMA
27extern int hot_add_scn_to_nid(unsigned long scn_addr);
28#else
29static inline int hot_add_scn_to_nid(unsigned long scn_addr)
30{
31 return 0;
32}
33#endif /* CONFIG_NUMA */
34#endif /* CONFIG_MEMORY_HOTPLUG */
35
36#endif /* __KERNEL__ */
37#endif /* _ASM_POWERPC_SPARSEMEM_H */