Cregit: Linux 5.9: sparsemem.h

Contributors: 11
Author	Tokens	Token Proportion	Commits	Commit Proportion
Mike Kravetz	48	49.48%	2	15.38%
Andy Whitcroft	14	14.43%	1	7.69%
David Gibson	9	9.28%	2	15.38%
Michael Ellerman	8	8.25%	1	7.69%
Arnd Bergmann	6	6.19%	1	7.69%
Aneesh Kumar K.V	3	3.09%	1	7.69%
Nicholas Piggin	3	3.09%	1	7.69%
Logan Gunthorpe	3	3.09%	1	7.69%
Greg Kroah-Hartman	1	1.03%	1	7.69%
Anton Blanchard	1	1.03%	1	7.69%
Tony Breeds	1	1.03%	1	7.69%
Total	97		13

/* 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 create_section_mapping(unsigned long start, unsigned long end,
				  int nid, pgprot_t prot);
extern int remove_section_mapping(unsigned long start, unsigned long end);

#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 */