Hi i try to apply kprobe to a system call , so i used probe and function option :
lttng enable-event aname -k --probe sys_open+0x0 : this command returns ip value lttng enable-event aname -k --function sys_open : this command returns ip and parent_ip values . what does these values ip and parent_ip means ? 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. Did i make a mistake or it's a limitation in LTTng ? regards.
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