1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _BCACHE_STATS_H_ 3 #define _BCACHE_STATS_H_ 4 5 struct cache_stat_collector { 6 atomic_t cache_hits; 7 atomic_t cache_misses; 8 atomic_t cache_bypass_hits; 9 atomic_t cache_bypass_misses; 10 atomic_t cache_readaheads; 11 atomic_t cache_miss_collisions; 12 atomic_t sectors_bypassed; 13 }; 14 15 struct cache_stats { 16 struct kobject kobj; 17 18 unsigned long cache_hits; 19 unsigned long cache_misses; 20 unsigned long cache_bypass_hits; 21 unsigned long cache_bypass_misses; 22 unsigned long cache_readaheads; 23 unsigned long cache_miss_collisions; 24 unsigned long sectors_bypassed; 25 26 unsigned int rescale; 27 }; 28 29 struct cache_accounting { 30 struct closure cl; 31 struct timer_list timer; 32 atomic_t closing; 33 34 struct cache_stat_collector collector; 35 36 struct cache_stats total; 37 struct cache_stats five_minute; 38 struct cache_stats hour; 39 struct cache_stats day; 40 }; 41 42 struct cache_set; 43 struct cached_dev; 44 struct bcache_device; 45 46 void bch_cache_accounting_init(struct cache_accounting *acc, 47 struct closure *parent); 48 49 int bch_cache_accounting_add_kobjs(struct cache_accounting *acc, 50 struct kobject *parent); 51 52 void bch_cache_accounting_clear(struct cache_accounting *acc); 53 54 void bch_cache_accounting_destroy(struct cache_accounting *acc); 55 56 void bch_mark_cache_accounting(struct cache_set *c, struct bcache_device *d, 57 bool hit, bool bypass); 58 void bch_mark_cache_readahead(struct cache_set *c, struct bcache_device *d); 59 void bch_mark_cache_miss_collision(struct cache_set *c, 60 struct bcache_device *d); 61 void bch_mark_sectors_bypassed(struct cache_set *c, 62 struct cached_dev *dc, 63 int sectors); 64 65 #endif /* _BCACHE_STATS_H_ */ 66