1
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