TSK_TRACE_FL_TRACE_BIT 809 include/linux/ftrace.h TSK_TRACE_FL_TRACE = 1 << TSK_TRACE_FL_TRACE_BIT, TSK_TRACE_FL_TRACE_BIT 815 include/linux/ftrace.h set_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace); TSK_TRACE_FL_TRACE_BIT 820 include/linux/ftrace.h clear_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace);