1 files changed, 58 insertions, 0 deletions

diff --git a/drivers/md/bcache/stats.h b/drivers/md/bcache/stats.h
new file mode 100644
index 000000000000..c7c7a8fd29fe
--- /dev/null
+++ b/drivers/md/bcache/stats.h
@@ -0,0 +1,58 @@
+#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_readaheads;
+        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_readaheads;
+        unsigned long cache_miss_collisions;
+        unsigned long sectors_bypassed;
+
+        unsigned                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 search;
+
+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 search *s, bool hit, bool bypass);
+void bch_mark_cache_readahead(struct search *s);
+void bch_mark_cache_miss_collision(struct search *s);
+void bch_mark_sectors_bypassed(struct search *s, int sectors);
+
+#endif /* _BCACHE_STATS_H_ */