TRACE_EVENT_FL_WAS_ENABLED_BIT 237 include/linux/ftrace_event.h TRACE_EVENT_FL_WAS_ENABLED_BIT, TRACE_EVENT_FL_WAS_ENABLED_BIT 259 include/linux/ftrace_event.h TRACE_EVENT_FL_WAS_ENABLED = (1 << TRACE_EVENT_FL_WAS_ENABLED_BIT),