/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHE_STATS_H_
#define _BCACHE_STATS_H_

struct cache_stat_collector {
        atomic_t cache_hits;
        atomic_t cache_misses;
        atomic_t cache_bypass_hits;
        atomic_t cache_bypass_misses;
        atomic_t cache_miss_collisions;
        atomic_t sectors_bypassed;
};

struct cache_stats {
        struct kobject          kobj;

        unsigned long cache_hits;
        unsigned long cache_misses;
        unsigned long cache_bypass_hits;
        unsigned long cache_bypass_misses;
        unsigned long cache_miss_collisions;
        unsigned long sectors_bypassed;

        unsigned int            rescale;
};

struct cache_accounting {
        struct closure          cl;
        struct timer_list       timer;
        atomic_t                closing;

        struct cache_stat_collector collector;

        struct cache_stats total;
        struct cache_stats five_minute;
        struct cache_stats hour;
        struct cache_stats day;
};

struct cache_set;
struct cached_dev;
struct bcache_device;

void bch_cache_accounting_init(struct cache_accounting *acc,
                               struct closure *parent);

int bch_cache_accounting_add_kobjs(struct cache_accounting *acc,
                                   struct kobject *parent);

void bch_cache_accounting_clear(struct cache_accounting *acc);

void bch_cache_accounting_destroy(struct cache_accounting *acc);

void bch_mark_cache_accounting(struct cache_set *c, struct bcache_device *d,
                               bool hit, bool bypass);
void bch_mark_cache_miss_collision(struct cache_set *c,
                                   struct bcache_device *d);
void bch_mark_sectors_bypassed(struct cache_set *c,
                               struct cached_dev *dc,
                               int sectors);

#endif /* _BCACHE_STATS_H_ */