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 remove_section_mapping(unsigned long start, unsigned long end);
17extern int memory_add_physaddr_to_nid(u64 start);
18#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
 
 
 
 
19
20#ifdef CONFIG_NUMA
21extern int hot_add_scn_to_nid(unsigned long scn_addr);
22#else
23static inline int hot_add_scn_to_nid(unsigned long scn_addr)
24{
25	return 0;
26}
27#endif /* CONFIG_NUMA */
28#endif /* CONFIG_MEMORY_HOTPLUG */
 
29#endif /* __KERNEL__ */
30#endif /* _ASM_POWERPC_SPARSEMEM_H */

 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 */