[mirror_ubuntu-jammy-kernel.git] / arch / powerpc / include / asm / sparsemem.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_SPARSEMEM_H
#define _ASM_POWERPC_SPARSEMEM_H 1
#ifdef __KERNEL__

#ifdef CONFIG_SPARSEMEM
/*
 * SECTION_SIZE_BITS		2^N: how big each section will be
 * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space
 */
#define SECTION_SIZE_BITS       24

#endif /* CONFIG_SPARSEMEM */

#ifdef CONFIG_MEMORY_HOTPLUG
extern int remove_section_mapping(unsigned long start, unsigned long end);
extern int memory_add_physaddr_to_nid(u64 start);
#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid

#ifdef CONFIG_NUMA
extern int hot_add_scn_to_nid(unsigned long scn_addr);
#else
static inline int hot_add_scn_to_nid(unsigned long scn_addr)
{
	return 0;
}
#endif /* CONFIG_NUMA */
#endif /* CONFIG_MEMORY_HOTPLUG */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SPARSEMEM_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1fc8b4ef DG	2	#ifndef _ASM_POWERPC_SPARSEMEM_H
1fc8b4ef DG	3	#define _ASM_POWERPC_SPARSEMEM_H 1
88ced031	4	#ifdef __KERNEL__
145e6642 AW	5
	6	#ifdef CONFIG_SPARSEMEM
	7	/*
	8	* SECTION_SIZE_BITS 2^N: how big each section will be
145e6642 AW	9	* MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
	10	*/
	11	#define SECTION_SIZE_BITS 24
145e6642	12
db7f37de TB	13	#endif /* CONFIG_SPARSEMEM */
db7f37de TB	14
54b79248	15	#ifdef CONFIG_MEMORY_HOTPLUG
52db9b44	16	extern int remove_section_mapping(unsigned long start, unsigned long end);
a927bd6b DW	17	extern int memory_add_physaddr_to_nid(u64 start);
a927bd6b DW	18	#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
36b390fd	19
237a0989 MK	20	#ifdef CONFIG_NUMA
	21	extern int hot_add_scn_to_nid(unsigned long scn_addr);
	22	#else
	23	static inline int hot_add_scn_to_nid(unsigned long scn_addr)
	24	{
	25	return 0;
	26	}
	27	#endif /* CONFIG_NUMA */
54b79248	28	#endif /* CONFIG_MEMORY_HOTPLUG */
88ced031	29	#endif /* __KERNEL__ */
1fc8b4ef	30	#endif /* _ASM_POWERPC_SPARSEMEM_H */