1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _BCACHEFS_ALLOC_TYPES_H 3 #define _BCACHEFS_ALLOC_TYPES_H 4 5 #include <linux/mutex.h> 6 #include <linux/spinlock.h> 7 8 #include "clock_types.h" 9 #include "fifo.h" 10 11 struct bucket_alloc_state { 12 u64 buckets_seen; 13 u64 skipped_open; 14 u64 skipped_need_journal_commit; 15 u64 skipped_nocow; 16 u64 skipped_nouse; 17 }; 18 19 #define BCH_WATERMARKS() \ 20 x(stripe) \ 21 x(normal) \ 22 x(copygc) \ 23 x(btree) \ 24 x(btree_copygc) \ 25 x(reclaim) \ 26 x(interior_updates) 27 28 enum bch_watermark { 29 #define x(name) BCH_WATERMARK_##name, 30 BCH_WATERMARKS() 31 #undef x 32 BCH_WATERMARK_NR, 33 }; 34 35 #define BCH_WATERMARK_BITS 3 36 #define BCH_WATERMARK_MASK ~(~0U << BCH_WATERMARK_BITS) 37 38 #define OPEN_BUCKETS_COUNT 1024 39 40 #define WRITE_POINT_HASH_NR 32 41 #define WRITE_POINT_MAX 32 42 43 /* 44 * 0 is never a valid open_bucket_idx_t: 45 */ 46 typedef u16 open_bucket_idx_t; 47 48 struct open_bucket { 49 spinlock_t lock; 50 atomic_t pin; 51 open_bucket_idx_t freelist; 52 open_bucket_idx_t hash; 53 54 /* 55 * When an open bucket has an ec_stripe attached, this is the index of 56 * the block in the stripe this open_bucket corresponds to: 57 */ 58 u8 ec_idx; 59 enum bch_data_type data_type:6; 60 unsigned valid:1; 61 unsigned on_partial_list:1; 62 63 u8 dev; 64 u8 gen; 65 u32 sectors_free; 66 u64 bucket; 67 struct ec_stripe_new *ec; 68 }; 69 70 #define OPEN_BUCKET_LIST_MAX 15 71 72 struct open_buckets { 73 open_bucket_idx_t nr; 74 open_bucket_idx_t v[OPEN_BUCKET_LIST_MAX]; 75 }; 76 77 struct dev_stripe_state { 78 u64 next_alloc[BCH_SB_MEMBERS_MAX]; 79 }; 80 81 #define WRITE_POINT_STATES() \ 82 x(stopped) \ 83 x(waiting_io) \ 84 x(waiting_work) \ 85 x(running) 86 87 enum write_point_state { 88 #define x(n) WRITE_POINT_##n, 89 WRITE_POINT_STATES() 90 #undef x 91 WRITE_POINT_STATE_NR 92 }; 93 94 struct write_point { 95 struct { 96 struct hlist_node node; 97 struct mutex lock; 98 u64 last_used; 99 unsigned long write_point; 100 enum bch_data_type data_type; 101 102 /* calculated based on how many pointers we're actually going to use: */ 103 unsigned sectors_free; 104 105 struct open_buckets ptrs; 106 struct dev_stripe_state stripe; 107 108 u64 sectors_allocated; 109 } __aligned(SMP_CACHE_BYTES); 110 111 struct { 112 struct work_struct index_update_work; 113 114 struct list_head writes; 115 spinlock_t writes_lock; 116 117 enum write_point_state state; 118 u64 last_state_change; 119 u64 time[WRITE_POINT_STATE_NR]; 120 } __aligned(SMP_CACHE_BYTES); 121 }; 122 123 struct write_point_specifier { 124 unsigned long v; 125 }; 126 127 #endif /* _BCACHEFS_ALLOC_TYPES_H */ 128