/*
* Enable kernel tracepoint event for a channel from the kernel session.
+ * We own filter_expression and filter.
*/
int event_kernel_enable_tracepoint(struct ltt_kernel_channel *kchan,
struct lttng_event *event)
/*
* Enable UST tracepoint event for a channel from a UST session.
+ * We own filter_expression, filter, and exclusion.
*/
int event_ust_enable_tracepoint(struct ltt_ust_session *usess,
struct ltt_ust_channel *uchan, struct lttng_event *event,
if (uevent == NULL) {
uevent = trace_ust_create_event(event, filter_expression,
filter, exclusion);
+ /* We have passed ownership */
+ filter_expression = NULL;
+ filter = NULL;
+ exclusion = NULL;
if (uevent == NULL) {
ret = LTTNG_ERR_UST_ENABLE_FAIL;
goto error;
end:
rcu_read_unlock();
+ free(filter_expression);
+ free(filter);
+ free(exclusion);
return ret;
error:
trace_ust_destroy_event(uevent);
}
rcu_read_unlock();
+ free(filter_expression);
+ free(filter);
+ free(exclusion);
return ret;
}