WB_REASON_LAPTOP_TIMER 38 include/trace/events/writeback.h EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \ WB_REASON_LAPTOP_TIMER 2002 mm/page-writeback.c wakeup_flusher_threads_bdi(backing_dev_info, WB_REASON_LAPTOP_TIMER);