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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __LINUX_PAGEISOLATION_H |
| 3 | #define __LINUX_PAGEISOLATION_H |
| 4 | |
| 5 | #ifdef CONFIG_MEMORY_ISOLATION |
| 6 | static inline bool is_migrate_isolate_page(struct page *page) |
| 7 | { |
| 8 | return get_pageblock_migratetype(page) == MIGRATE_ISOLATE; |
| 9 | } |
| 10 | static inline bool is_migrate_isolate(int migratetype) |
| 11 | { |
| 12 | return migratetype == MIGRATE_ISOLATE; |
| 13 | } |
| 14 | #define get_pageblock_isolate(page) \ |
| 15 | get_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate) |
| 16 | #define clear_pageblock_isolate(page) \ |
| 17 | clear_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate) |
| 18 | #define set_pageblock_isolate(page) \ |
| 19 | set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate) |
| 20 | #else |
| 21 | static inline bool is_migrate_isolate_page(struct page *page) |
| 22 | { |
| 23 | return false; |
| 24 | } |
| 25 | static inline bool is_migrate_isolate(int migratetype) |
| 26 | { |
| 27 | return false; |
| 28 | } |
| 29 | static inline bool get_pageblock_isolate(struct page *page) |
| 30 | { |
| 31 | return false; |
| 32 | } |
| 33 | static inline void clear_pageblock_isolate(struct page *page) |
| 34 | { |
| 35 | } |
| 36 | static inline void set_pageblock_isolate(struct page *page) |
| 37 | { |
| 38 | } |
| 39 | #endif |
| 40 | |
| 41 | /* |
| 42 | * Pageblock isolation modes: |
| 43 | * PB_ISOLATE_MODE_MEM_OFFLINE - isolate to offline (!allocate) memory |
| 44 | * e.g., skip over PageHWPoison() pages and |
| 45 | * PageOffline() pages. Unmovable pages will be |
| 46 | * reported in this mode. |
| 47 | * PB_ISOLATE_MODE_CMA_ALLOC - isolate for CMA allocations |
| 48 | * PB_ISOLATE_MODE_OTHER - isolate for other purposes |
| 49 | */ |
| 50 | enum pb_isolate_mode { |
| 51 | PB_ISOLATE_MODE_MEM_OFFLINE, |
| 52 | PB_ISOLATE_MODE_CMA_ALLOC, |
| 53 | PB_ISOLATE_MODE_OTHER, |
| 54 | }; |
| 55 | |
| 56 | void __meminit init_pageblock_migratetype(struct page *page, |
| 57 | enum migratetype migratetype, |
| 58 | bool isolate); |
| 59 | |
| 60 | bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page); |
| 61 | bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page); |
| 62 | |
| 63 | int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, |
| 64 | enum pb_isolate_mode mode); |
| 65 | |
| 66 | void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn); |
| 67 | |
| 68 | int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, |
| 69 | enum pb_isolate_mode mode); |
| 70 | #endif |
| 71 |
Warning: This file is not a C or C++ file. It does not have highlighting.