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