GNU Linux-libre 4.19.314-gnu1
[releases.git] / drivers / md / bcache / stats.h
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_ */