md/bcache/stats.c

28  * get a cache hit, we increment a single atomic_t in acc->collector, and when
94 int bch_cache_accounting_add_kobjs(struct cache_accounting *acc,
97 	int ret = kobject_add(&acc->total.kobj, parent,
99 	ret = ret ?: kobject_add(&acc->five_minute.kobj, parent,
101 	ret = ret ?: kobject_add(&acc->hour.kobj, parent,
103 	ret = ret ?: kobject_add(&acc->day.kobj, parent,
108 void bch_cache_accounting_clear(struct cache_accounting *acc)
110 	acc->total.cache_hits = 0;
111 	acc->total.cache_misses = 0;
112 	acc->total.cache_bypass_hits = 0;
113 	acc->total.cache_bypass_misses = 0;
114 	acc->total.cache_miss_collisions = 0;
115 	acc->total.sectors_bypassed = 0;
118 void bch_cache_accounting_destroy(struct cache_accounting *acc)
120 	kobject_put(&acc->total.kobj);
121 	kobject_put(&acc->five_minute.kobj);
122 	kobject_put(&acc->hour.kobj);
123 	kobject_put(&acc->day.kobj);
125 	atomic_set(&acc->closing, 1);
126 	if (del_timer_sync(&acc->timer))
127 		closure_return(&acc->cl);
152 	struct cache_accounting *acc = from_timer(acc, t, timer);
155 	unsigned int t = atomic_xchg(&acc->collector.name, 0);		\
157 	acc->five_minute.name += t;					\
158 	acc->hour.name += t;						\
159 	acc->day.name += t;						\
160 	acc->total.name += t;						\
170 	scale_stats(&acc->total, 0);
171 	scale_stats(&acc->day, DAY_RESCALE);
172 	scale_stats(&acc->hour, HOUR_RESCALE);
173 	scale_stats(&acc->five_minute, FIVE_MINUTE_RESCALE);
175 	acc->timer.expires += accounting_delay;
177 	if (!atomic_read(&acc->closing))
178 		add_timer(&acc->timer);
180 		closure_return(&acc->cl);
222 void bch_cache_accounting_init(struct cache_accounting *acc,
225 	kobject_init(&acc->total.kobj,		&bch_stats_ktype);
226 	kobject_init(&acc->five_minute.kobj,	&bch_stats_ktype);
227 	kobject_init(&acc->hour.kobj,		&bch_stats_ktype);
228 	kobject_init(&acc->day.kobj,		&bch_stats_ktype);
230 	closure_init(&acc->cl, parent);
231 	timer_setup(&acc->timer, scale_accounting, 0);
232 	acc->timer.expires	= jiffies + accounting_delay;
233 	add_timer(&acc->timer);