linux/block/blk-stat.h

12  * struct blk_stat_callback - Block statistics callback.
31 	 * @cpu_stat: Per-cpu statistics buckets.
36 	 * @bucket_fn: Given a request, returns which statistics bucket it
43 	 * @buckets: Number of statistics buckets.
48 	 * @stat: Array of statistics buckets.
78  * blk_stat_alloc_callback() - Allocate a block statistics callback.
81  * @buckets: Number of statistics buckets.
94  * blk_stat_add_callback() - Add a block statistics callback to be run on a
106  * blk_stat_remove_callback() - Remove a block statistics callback from a
118  * blk_stat_free_callback() - Free a block statistics callback.
129  * blk_stat_is_active() - Check if a block statistics callback is currently
130  * gathering statistics.
141  * blk_stat_activate_nsecs() - Gather block statistics during a time window in
144  * @nsecs: Number of nanoseconds to gather statistics for.
160  * blk_stat_activate_msecs() - Gather block statistics during a time window in
163  * @msecs: Number of milliseconds to gather statistics for.