kernel/block/blk-stat.h

12  * struct blk_stat_callback - Block statistics callback.
26 	 * @timer: Timer for the next callback invocation.
53 	 * @fn: Callback function.
70 /* record time/size info in request but not add a callback */
74  * blk_stat_alloc_callback() - Allocate a block statistics callback.
75  * @timer_fn: Timer callback function.
76  * @bucket_fn: Bucket callback function.
80  * See &struct blk_stat_callback for details on the callback functions.
90  * blk_stat_add_callback() - Add a block statistics callback to be run on a
93  * @cb: The callback.
102  * blk_stat_remove_callback() - Remove a block statistics callback from a
105  * @cb: The callback.
107  * When this returns, the callback is not running on any CPUs and will not be
114  * blk_stat_free_callback() - Free a block statistics callback.
115  * @cb: The callback.
125  * blk_stat_is_active() - Check if a block statistics callback is currently
127  * @cb: The callback.
137  * @cb: The callback.
140  * The timer callback will be called when the window expires.
156  * @cb: The callback.
159  * The timer callback will be called when the window expires.