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| 1 | 1 | /* |
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| 2 | + * Copyright(c) 2020 Cornelis Networks, Inc. |
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| 2 | 3 | * Copyright(c) 2016 Intel Corporation. |
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| 3 | 4 | * |
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| 4 | 5 | * This file is provided under a dual BSD/GPLv2 license. When using or |
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| .. | .. |
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| 54 | 55 | unsigned long len; |
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| 55 | 56 | unsigned long __last; |
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| 56 | 57 | struct rb_node node; |
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| 58 | + struct mmu_rb_handler *handler; |
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| 57 | 59 | struct list_head list; |
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| 60 | + struct kref refcount; |
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| 58 | 61 | }; |
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| 59 | 62 | |
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| 60 | 63 | /* |
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| .. | .. |
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| 71 | 74 | void *evict_arg, bool *stop); |
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| 72 | 75 | }; |
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| 73 | 76 | |
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| 74 | | -int hfi1_mmu_rb_register(void *ops_arg, struct mm_struct *mm, |
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| 77 | +struct mmu_rb_handler { |
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| 78 | + struct mmu_notifier mn; |
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| 79 | + struct rb_root_cached root; |
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| 80 | + void *ops_arg; |
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| 81 | + spinlock_t lock; /* protect the RB tree */ |
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| 82 | + struct mmu_rb_ops *ops; |
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| 83 | + struct list_head lru_list; |
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| 84 | + struct work_struct del_work; |
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| 85 | + struct list_head del_list; |
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| 86 | + struct workqueue_struct *wq; |
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| 87 | +}; |
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| 88 | + |
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| 89 | +int hfi1_mmu_rb_register(void *ops_arg, |
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| 75 | 90 | struct mmu_rb_ops *ops, |
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| 76 | 91 | struct workqueue_struct *wq, |
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| 77 | 92 | struct mmu_rb_handler **handler); |
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| 78 | 93 | void hfi1_mmu_rb_unregister(struct mmu_rb_handler *handler); |
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| 79 | 94 | int hfi1_mmu_rb_insert(struct mmu_rb_handler *handler, |
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| 80 | 95 | struct mmu_rb_node *mnode); |
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| 96 | +void hfi1_mmu_rb_release(struct kref *refcount); |
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| 97 | + |
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| 81 | 98 | void hfi1_mmu_rb_evict(struct mmu_rb_handler *handler, void *evict_arg); |
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| 82 | | -void hfi1_mmu_rb_remove(struct mmu_rb_handler *handler, |
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| 83 | | - struct mmu_rb_node *mnode); |
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| 84 | | -bool hfi1_mmu_rb_remove_unless_exact(struct mmu_rb_handler *handler, |
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| 85 | | - unsigned long addr, unsigned long len, |
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| 86 | | - struct mmu_rb_node **rb_node); |
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| 99 | +struct mmu_rb_node *hfi1_mmu_rb_get_first(struct mmu_rb_handler *handler, |
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| 100 | + unsigned long addr, |
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| 101 | + unsigned long len); |
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| 87 | 102 | |
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| 88 | 103 | #endif /* _HFI1_MMU_RB_H */ |
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