<div dir="ltr">Hi,<br>i tried to apply kprobe to a system call , so i used probe and function option : <br><br>lttng enable-event aname -k --probe sys_open+0x0 <br>this command returns ip value <br><br>lttng enable-event aname -k --function sys_open<br>
this command returns ip and parent_ip values .<br><br>what does these values ip and parent_ip means ?<br><br>I try to apply probe and function options to some kernel symbols like initialized date (like xen_vcpu_info symbol), read only data (like linux_prob_banner symbol) and code (like reserve_ebda_region symbol) it displays to me : Enable kernel event failed ,warning some command went(s) wrong.<br>
Did i make a mistake or it's a limitation in LTTng ?<br>regards.<br></div>