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 */ 31