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_ */