+ list_for_each_entry(call, &ftrace_events, list) {
+ struct event_filter *filter = call->filter;
+
+ if (!call->define_fields)
+ continue;
+
+ if (strcmp(call->system, system->name) != 0)
+ continue;
+
+ /* try to see if the filter can be applied */
+ err = replace_preds(call, filter, ps, filter_string, true);
+ if (err)
+ continue;
+
+ /* really apply the filter */
+ filter_disable_preds(call);
+ err = replace_preds(call, filter, ps, filter_string, false);
+ if (err)
+ filter_disable_preds(call);
+ else {
+ call->filter_active = 1;
+ replace_filter_string(filter, filter_string);
+ }
+ fail = false;
+ }
+
+ if (fail) {
+ parse_error(ps, FILT_ERR_BAD_SUBSYS_FILTER, 0);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int apply_event_filter(struct ftrace_event_call *call, char *filter_string)
+{
+ int err;