Merge tag 'kvm-3.10-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[firefly-linux-kernel-4.4.55.git] / drivers / md / bcache / stats.h
1 #ifndef _BCACHE_STATS_H_
2 #define _BCACHE_STATS_H_
3
4 struct cache_stat_collector {
5         atomic_t cache_hits;
6         atomic_t cache_misses;
7         atomic_t cache_bypass_hits;
8         atomic_t cache_bypass_misses;
9         atomic_t cache_readaheads;
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                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 search;
42
43 void bch_cache_accounting_init(struct cache_accounting *acc,
44                                struct closure *parent);
45
46 int bch_cache_accounting_add_kobjs(struct cache_accounting *acc,
47                                    struct kobject *parent);
48
49 void bch_cache_accounting_clear(struct cache_accounting *acc);
50
51 void bch_cache_accounting_destroy(struct cache_accounting *acc);
52
53 void bch_mark_cache_accounting(struct search *s, bool hit, bool bypass);
54 void bch_mark_cache_readahead(struct search *s);
55 void bch_mark_cache_miss_collision(struct search *s);
56 void bch_mark_sectors_bypassed(struct search *s, int sectors);
57
58 #endif /* _BCACHE_STATS_H_ */