1 files changed, 10 insertions, 2 deletions

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 39dca4e86a94..74fdfe9ed3db 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4144,9 +4144,9 @@ unregister_ftrace_function_probe_func(char *glob, struct trace_array *tr,
         int i, ret = -ENODEV;
         int size;
 
-        if (glob && (strcmp(glob, "*") == 0 || !strlen(glob)))
+        if (!glob || !strlen(glob) || !strcmp(glob, "*"))
                 func_g.search = NULL;
-        else if (glob) {
+        else {
                 int not;
 
                 func_g.type = filter_parse_regex(glob, strlen(glob),
@@ -4256,6 +4256,14 @@ unregister_ftrace_function_probe_func(char *glob, struct trace_array *tr,
         return ret;
 }
 
+void clear_ftrace_function_probes(struct trace_array *tr)
+{
+        struct ftrace_func_probe *probe, *n;
+
+        list_for_each_entry_safe(probe, n, &tr->func_probes, list)
+                unregister_ftrace_function_probe_func(NULL, tr, probe->probe_ops);
+}
+
 static LIST_HEAD(ftrace_commands);
 static DEFINE_MUTEX(ftrace_cmd_mutex);