Dear all: i saw there is a function called "trace_sched_kthread_stop_ret" in some place of kernel. but I found it is empty function. http://lxr.linux.no/linux+v3.1.5/+code=trace_sched_kthread_stop_ret if it is empty, why we still keep it in kernel? -- Regards, _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies