projects / thirdparty / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e900a918 DW |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | // Copyright(c) 2018 Intel Corporation. All rights reserved. | |
| 3 | #ifndef _MM_SHUFFLE_H | |
| 4 | #define _MM_SHUFFLE_H | |
| 5 | #include <linux/jump_label.h> | |
| 6 | ||
| 7 | /* | |
| 8 | * SHUFFLE_ENABLE is called from the command line enabling path, or by | |
| 9 | * platform-firmware enabling that indicates the presence of a | |
| 10 | * direct-mapped memory-side-cache. SHUFFLE_FORCE_DISABLE is called from | |
| 11 | * the command line path and overrides any previous or future | |
| 12 | * SHUFFLE_ENABLE. | |
| 13 | */ | |
| 14 | enum mm_shuffle_ctl { | |
| 15 | SHUFFLE_ENABLE, | |
| 16 | SHUFFLE_FORCE_DISABLE, | |
| 17 | }; | |
| 18 | ||
| 19 | #define SHUFFLE_ORDER (MAX_ORDER-1) | |
| 20 | ||
| 21 | #ifdef CONFIG_SHUFFLE_PAGE_ALLOCATOR | |
| 22 | DECLARE_STATIC_KEY_FALSE(page_alloc_shuffle_key); | |
| 23 | extern void page_alloc_shuffle(enum mm_shuffle_ctl ctl); | |
| 24 | extern void __shuffle_free_memory(pg_data_t *pgdat); | |
| 25 | static inline void shuffle_free_memory(pg_data_t *pgdat) | |
| 26 | { | |
| 27 | if (!static_branch_unlikely(&page_alloc_shuffle_key)) | |
| 28 | return; | |
| 29 | __shuffle_free_memory(pgdat); | |
| 30 | } | |
| 31 | ||
| 32 | extern void __shuffle_zone(struct zone *z); | |
| 33 | static inline void shuffle_zone(struct zone *z) | |
| 34 | { | |
| 35 | if (!static_branch_unlikely(&page_alloc_shuffle_key)) | |
| 36 | return; | |
| 37 | __shuffle_zone(z); | |
| 38 | } | |
| 97500a4a DW |
39 | |
| 40 | static inline bool is_shuffle_order(int order) | |
| 41 | { | |
| 42 | if (!static_branch_unlikely(&page_alloc_shuffle_key)) | |
| 43 | return false; | |
| 44 | return order >= SHUFFLE_ORDER; | |
| 45 | } | |
| e900a918 DW |
46 | #else |
| 47 | static inline void shuffle_free_memory(pg_data_t *pgdat) | |
| 48 | { | |
| 49 | } | |
| 50 | ||
| 51 | static inline void shuffle_zone(struct zone *z) | |
| 52 | { | |
| 53 | } | |
| 54 | ||
| 55 | static inline void page_alloc_shuffle(enum mm_shuffle_ctl ctl) | |
| 56 | { | |
| 57 | } | |
| 97500a4a DW |
58 | |
| 59 | static inline bool is_shuffle_order(int order) | |
| 60 | { | |
| 61 | return false; | |
| 62 | } | |
| e900a918 DW |
63 | #endif |
| 64 | #endif /* _MM_SHUFFLE_H */ |