lttng_event_probe_attr Struct Reference

Legacy Linux kprobe/kretprobe location. More...

#include <event.h>

Data Fields
uint64_t	addr
	kprobe/kretprobe address.
uint64_t	offset
	kprobe/kretprobe address offset from the symbol named lttng_event_probe_attr::symbol_name.
char	symbol_name [LTTNG_SYMBOL_NAME_LEN]
	kprobe/kretprobe symbol name.

Detailed Description

Legacy Linux kprobe/kretprobe location.

Such a structure indicates the location of a Linux kprobe/kretprobe for a recording event rule having such an instrumentation point type condition.

You must initialize such a structure to zeros before setting its members and using it, for example:

struct lttng_event_probe_attr loc;
 
memset(&loc, 0, sizeof(loc));

Set either lttng_event_probe_attr::addr or lttng_event_probe_attr::symbol_name and lttng_event_probe_attr::offset.

See also

Instrumentation point type condition.

Field Documentation

addr

uint64_t lttng_event_probe_attr::addr

kprobe/kretprobe address.

If this member is not 0, then lttng_event_probe_attr::symbol_name must be an empty string.

symbol_name

char lttng_event_probe_attr::symbol_name[LTTNG_SYMBOL_NAME_LEN]

kprobe/kretprobe symbol name.

The actual kprobe/kretprobe address is the address of the named symbol plus the value of lttng_event_probe_attr::offset.

If this member is not an empty string, then lttng_event_probe_attr::addr must be 0.