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