162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASM_POWERPC_SPARSEMEM_H 362306a36Sopenharmony_ci#define _ASM_POWERPC_SPARSEMEM_H 1 462306a36Sopenharmony_ci#ifdef __KERNEL__ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#ifdef CONFIG_SPARSEMEM 762306a36Sopenharmony_ci/* 862306a36Sopenharmony_ci * SECTION_SIZE_BITS 2^N: how big each section will be 962306a36Sopenharmony_ci * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space 1062306a36Sopenharmony_ci */ 1162306a36Sopenharmony_ci#define SECTION_SIZE_BITS 24 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#endif /* CONFIG_SPARSEMEM */ 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci#ifdef CONFIG_MEMORY_HOTPLUG 1662306a36Sopenharmony_ciextern int remove_section_mapping(unsigned long start, unsigned long end); 1762306a36Sopenharmony_ciextern int memory_add_physaddr_to_nid(u64 start); 1862306a36Sopenharmony_ci#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci#ifdef CONFIG_NUMA 2162306a36Sopenharmony_ciextern int hot_add_scn_to_nid(unsigned long scn_addr); 2262306a36Sopenharmony_ci#else 2362306a36Sopenharmony_cistatic inline int hot_add_scn_to_nid(unsigned long scn_addr) 2462306a36Sopenharmony_ci{ 2562306a36Sopenharmony_ci return 0; 2662306a36Sopenharmony_ci} 2762306a36Sopenharmony_ci#endif /* CONFIG_NUMA */ 2862306a36Sopenharmony_ci#endif /* CONFIG_MEMORY_HOTPLUG */ 2962306a36Sopenharmony_ci#endif /* __KERNEL__ */ 3062306a36Sopenharmony_ci#endif /* _ASM_POWERPC_SPARSEMEM_H */ 31