| 1 |
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| 2 | #ifndef __LINUX_PAGEISOLATION_H
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| 3 | #define __LINUX_PAGEISOLATION_H
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| 4 |
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| 5 | #ifdef CONFIG_MEMORY_ISOLATION
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| 6 | static inline bool is_migrate_isolate_page(struct page *page)
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| 7 | {
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| 8 | return get_pageblock_migratetype(page) == MIGRATE_ISOLATE;
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| 9 | }
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| 10 | static inline bool is_migrate_isolate(int migratetype)
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| 11 | {
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| 12 | return migratetype == MIGRATE_ISOLATE;
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| 13 | }
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| 14 | #define get_pageblock_isolate(page) \
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| 15 | get_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate)
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| 16 | #define clear_pageblock_isolate(page) \
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| 17 | clear_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate)
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| 18 | #define set_pageblock_isolate(page) \
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| 19 | set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate)
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| 20 | #else
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| 21 | static inline bool is_migrate_isolate_page(struct page *page)
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| 22 | {
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| 23 | return false;
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| 24 | }
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| 25 | static inline bool is_migrate_isolate(int migratetype)
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| 26 | {
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| 27 | return false;
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| 28 | }
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| 29 | static inline bool get_pageblock_isolate(struct page *page)
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| 30 | {
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| 31 | return false;
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| 32 | }
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| 33 | static inline void clear_pageblock_isolate(struct page *page)
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| 34 | {
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| 35 | }
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| 36 | static inline void set_pageblock_isolate(struct page *page)
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| 37 | {
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| 38 | }
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| 39 | #endif
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| 40 |
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| 41 | |
| 42 | * Pageblock isolation modes:
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| 43 | * PB_ISOLATE_MODE_MEM_OFFLINE - isolate to offline (!allocate) memory
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| 44 | * e.g., skip over PageHWPoison() pages and
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| 45 | * PageOffline() pages. Unmovable pages will be
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| 46 | * reported in this mode.
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| 47 | * PB_ISOLATE_MODE_CMA_ALLOC - isolate for CMA allocations
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| 48 | * PB_ISOLATE_MODE_OTHER - isolate for other purposes
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| 49 |
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| 50 | enum pb_isolate_mode {
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| 51 | PB_ISOLATE_MODE_MEM_OFFLINE,
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| 52 | PB_ISOLATE_MODE_CMA_ALLOC,
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| 53 | PB_ISOLATE_MODE_OTHER,
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| 54 | };
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| 55 |
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| 56 | void __meminit init_pageblock_migratetype(struct page *page,
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| 57 | enum migratetype migratetype,
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| 58 | bool isolate);
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| 59 |
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| 60 | bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);
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| 61 | bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
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| 62 |
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| 63 | int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
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| 64 | enum pb_isolate_mode mode);
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| 65 |
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| 66 | void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);
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| 67 |
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| 68 | int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
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| 69 | enum pb_isolate_mode mode);
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| 70 | bool page_is_unmovable(struct zone *zone, struct page *page,
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| 71 | enum pb_isolate_mode mode, unsigned long *step);
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| 72 | #endif
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