Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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, int nid);
17extern int remove_section_mapping(unsigned long start, unsigned long end);
18
19#ifdef CONFIG_PPC_BOOK3S_64
20extern int resize_hpt_for_hotplug(unsigned long new_mem_size);
21#else
22static inline int resize_hpt_for_hotplug(unsigned long new_mem_size) { return 0; }
23#endif
24
25#ifdef CONFIG_NUMA
26extern int hot_add_scn_to_nid(unsigned long scn_addr);
27#else
28static inline int hot_add_scn_to_nid(unsigned long scn_addr)
29{
30 return 0;
31}
32#endif /* CONFIG_NUMA */
33#endif /* CONFIG_MEMORY_HOTPLUG */
34
35#endif /* __KERNEL__ */
36#endif /* _ASM_POWERPC_SPARSEMEM_H */