event_subsystem_dir(const char *name, struct dentry *d_events)
{
struct event_subsystem *system;
+ struct dentry *entry;
/* First see if we did not already create this dir */
list_for_each_entry(system, &event_subsystems, list) {
system->preds = NULL;
+ entry = debugfs_create_file("filter", 0644, system->entry, system,
+ &ftrace_subsystem_filter_fops);
+ if (!entry)
+ pr_warning("Could not create debugfs "
+ "'%s/filter' entry\n", name);
+
return system->entry;
}