| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 12 | |
| 13 | #endif /* CONFIG_SPARSEMEM */ |
| 14 | |
| 15 | #ifdef CONFIG_MEMORY_HOTPLUG |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 16 | extern int remove_section_mapping(unsigned long start, unsigned long end); |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 17 | extern int memory_add_physaddr_to_nid(u64 start); |
| 18 | #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 19 | |
| 20 | #ifdef CONFIG_NUMA |
| 21 | extern int hot_add_scn_to_nid(unsigned long scn_addr); |
| 22 | #else |
| 23 | static 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 */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 29 | #endif /* __KERNEL__ */ |
| 30 | #endif /* _ASM_POWERPC_SPARSEMEM_H */ |