projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1fc8b4ef DG |
2 | #ifndef _ASM_POWERPC_SPARSEMEM_H |
| 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 | |
| 9 | * MAX_PHYSADDR_BITS 2^N: how much physical address space we have | |
| 10 | * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space | |
| 11 | */ | |
| 12 | #define SECTION_SIZE_BITS 24 | |
| 261efc3f | 13 | |
| 048ee099 AK |
14 | #define MAX_PHYSADDR_BITS 46 |
| 15 | #define MAX_PHYSMEM_BITS 46 | |
| 145e6642 | 16 | |
| db7f37de TB |
17 | #endif /* CONFIG_SPARSEMEM */ |
| 18 | ||
| 54b79248 | 19 | #ifdef CONFIG_MEMORY_HOTPLUG |
| 29ab6c47 | 20 | extern int create_section_mapping(unsigned long start, unsigned long end, int nid); |
| 52db9b44 | 21 | extern int remove_section_mapping(unsigned long start, unsigned long end); |
| 36b390fd ME |
22 | |
| 23 | #ifdef CONFIG_PPC_BOOK3S_64 | |
| 24 | extern void resize_hpt_for_hotplug(unsigned long new_mem_size); | |
| 25 | #else | |
| 26 | static inline void resize_hpt_for_hotplug(unsigned long new_mem_size) { } | |
| 27 | #endif | |
| 28 | ||
| 237a0989 MK |
29 | #ifdef CONFIG_NUMA |
| 30 | extern int hot_add_scn_to_nid(unsigned long scn_addr); | |
| 31 | #else | |
| 32 | static inline int hot_add_scn_to_nid(unsigned long scn_addr) | |
| 33 | { | |
| 34 | return 0; | |
| 35 | } | |
| 36 | #endif /* CONFIG_NUMA */ | |
| 54b79248 MK |
37 | #endif /* CONFIG_MEMORY_HOTPLUG */ |
| 38 | ||
| 88ced031 | 39 | #endif /* __KERNEL__ */ |
| 1fc8b4ef | 40 | #endif /* _ASM_POWERPC_SPARSEMEM_H */ |