clocksource_subsys 1178 kernel/time/clocksource.c static struct bus_type clocksource_subsys = { clocksource_subsys 1185 kernel/time/clocksource.c .bus = &clocksource_subsys, clocksource_subsys 1191 kernel/time/clocksource.c int error = subsys_system_register(&clocksource_subsys, NULL);