1 files changed, 7 insertions, 0 deletions

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 576f4fa2af0d..789e14eb09a5 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -684,6 +684,7 @@ static struct dentry *
 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) {
@@ -712,6 +713,12 @@ event_subsystem_dir(const char *name, struct dentry *d_events)
 
         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;
 }