blk_log_unplug   1496 kernel/trace/blktrace.c 	[__BLK_TA_UNPLUG_IO]	= {{  "U", "unplug_io" },  blk_log_unplug },
blk_log_unplug   1497 kernel/trace/blktrace.c 	[__BLK_TA_UNPLUG_TIMER]	= {{ "UT", "unplug_timer" }, blk_log_unplug },