| 1 | |
| 2 | |
| 3 | #ifndef _MM_SHUFFLE_H
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| 4 | #define _MM_SHUFFLE_H
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| 5 |
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| 6 | #include <linux/jump_label.h>
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| 7 | #include <linux/mmzone.h>
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| 8 |
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| 9 | #define SHUFFLE_ORDER MAX_PAGE_ORDER
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| 10 |
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| 11 | #ifdef CONFIG_SHUFFLE_PAGE_ALLOCATOR
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| 12 | DECLARE_STATIC_KEY_FALSE(page_alloc_shuffle_key);
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| 13 | extern void __shuffle_free_memory(pg_data_t *pgdat);
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| 14 | extern bool shuffle_pick_tail(void);
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| 15 | static inline void __meminit shuffle_free_memory(pg_data_t *pgdat)
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| 16 | {
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| 17 | if (!static_branch_unlikely(&page_alloc_shuffle_key))
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| 18 | return;
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| 19 | __shuffle_free_memory(pgdat);
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| 20 | }
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| 21 |
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| 22 | extern void __shuffle_zone(struct zone *z);
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| 23 | static inline void __meminit shuffle_zone(struct zone *z)
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| 24 | {
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| 25 | if (!static_branch_unlikely(&page_alloc_shuffle_key))
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| 26 | return;
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| 27 | __shuffle_zone(z);
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| 28 | }
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| 29 |
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| 30 | static inline bool is_shuffle_order(int order)
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| 31 | {
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| 32 | if (!static_branch_unlikely(&page_alloc_shuffle_key))
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| 33 | return false;
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| 34 | return order >= SHUFFLE_ORDER;
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| 35 | }
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| 36 | #else
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| 37 | static inline bool shuffle_pick_tail(void)
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| 38 | {
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| 39 | return false;
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| 40 | }
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| 41 |
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| 42 | static inline void shuffle_free_memory(pg_data_t *pgdat)
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| 43 | {
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| 44 | }
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| 45 |
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| 46 | static inline void shuffle_zone(struct zone *z)
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| 47 | {
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| 48 | }
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| 49 |
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| 50 | static inline bool is_shuffle_order(int order)
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| 51 | {
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| 52 | return false;
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| 53 | }
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| 54 | #endif
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| 55 | #endif
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