18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_POWERPC_SPARSEMEM_H 38c2ecf20Sopenharmony_ci#define _ASM_POWERPC_SPARSEMEM_H 1 48c2ecf20Sopenharmony_ci#ifdef __KERNEL__ 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci#ifdef CONFIG_SPARSEMEM 78c2ecf20Sopenharmony_ci/* 88c2ecf20Sopenharmony_ci * SECTION_SIZE_BITS 2^N: how big each section will be 98c2ecf20Sopenharmony_ci * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space 108c2ecf20Sopenharmony_ci */ 118c2ecf20Sopenharmony_ci#define SECTION_SIZE_BITS 24 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#endif /* CONFIG_SPARSEMEM */ 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#ifdef CONFIG_MEMORY_HOTPLUG 168c2ecf20Sopenharmony_ciextern int remove_section_mapping(unsigned long start, unsigned long end); 178c2ecf20Sopenharmony_ciextern int memory_add_physaddr_to_nid(u64 start); 188c2ecf20Sopenharmony_ci#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci#ifdef CONFIG_NUMA 218c2ecf20Sopenharmony_ciextern int hot_add_scn_to_nid(unsigned long scn_addr); 228c2ecf20Sopenharmony_ci#else 238c2ecf20Sopenharmony_cistatic inline int hot_add_scn_to_nid(unsigned long scn_addr) 248c2ecf20Sopenharmony_ci{ 258c2ecf20Sopenharmony_ci return 0; 268c2ecf20Sopenharmony_ci} 278c2ecf20Sopenharmony_ci#endif /* CONFIG_NUMA */ 288c2ecf20Sopenharmony_ci#endif /* CONFIG_MEMORY_HOTPLUG */ 298c2ecf20Sopenharmony_ci#endif /* __KERNEL__ */ 308c2ecf20Sopenharmony_ci#endif /* _ASM_POWERPC_SPARSEMEM_H */ 31