+ ret = try_module_get(event_notifier->priv->parent.desc->owner);
+ WARN_ON_ONCE(!ret);
+ break;
+
+ case LTTNG_KERNEL_ABI_SYSCALL:
+ /*
+ * Needs to be explicitly enabled after creation, since
+ * we may want to apply filters.
+ */
+ event_notifier->parent.enabled = 0;
+ event_notifier->priv->parent.registered = 0;
+ event_notifier->priv->parent.desc = event_desc;
+ switch (event_notifier_param->event.u.syscall.entryexit) {
+ case LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT:
+ ret = -EINVAL;
+ goto register_error;
+ case LTTNG_KERNEL_ABI_SYSCALL_ENTRY:
+ event_notifier->priv->parent.u.syscall.entryexit = LTTNG_SYSCALL_ENTRY;
+ break;
+ case LTTNG_KERNEL_ABI_SYSCALL_EXIT:
+ event_notifier->priv->parent.u.syscall.entryexit = LTTNG_SYSCALL_EXIT;
+ break;
+ }
+ switch (event_notifier_param->event.u.syscall.abi) {
+ case LTTNG_KERNEL_ABI_SYSCALL_ABI_ALL:
+ ret = -EINVAL;
+ goto register_error;
+ case LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE:
+ event_notifier->priv->parent.u.syscall.abi = LTTNG_SYSCALL_ABI_NATIVE;
+ break;
+ case LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT:
+ event_notifier->priv->parent.u.syscall.abi = LTTNG_SYSCALL_ABI_COMPAT;
+ break;
+ }
+
+ if (!event_notifier->priv->parent.desc) {
+ ret = -EINVAL;
+ goto register_error;
+ }
+ break;
+
+ case LTTNG_KERNEL_ABI_UPROBE:
+ /*
+ * Needs to be explicitly enabled after creation, since
+ * we may want to apply filters.
+ */
+ event_notifier->parent.enabled = 0;
+ event_notifier->priv->parent.registered = 1;
+
+ /*
+ * Populate lttng_event_notifier structure before
+ * event_notifier registration.
+ */
+ smp_wmb();
+
+ ret = lttng_uprobes_register_event_notifier(
+ event_notifier_param->event.name,
+ event_notifier_param->event.u.uprobe.fd,
+ event_notifier);
+ if (ret)
+ goto register_error;
+ ret = try_module_get(event_notifier->priv->parent.desc->owner);