1 files changed, 21 insertions, 9 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d4627f15407a..05e0e50539fc 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4105,9 +4105,24 @@ static void tracing_set_nop(struct trace_array *tr)
         tr->current_trace = &nop_trace;
 }
 
-static int tracing_set_tracer(struct trace_array *tr, const char *buf)
+static void update_tracer_options(struct trace_array *tr, struct tracer *t)
 {
         static struct trace_option_dentry *topts;
+
+        /* Only enable if the directory has been created already. */
+        if (!tr->dir)
+                return;
+
+        /* Currently, only the top instance has options */
+        if (!(tr->flags & TRACE_ARRAY_FL_GLOBAL))
+                return;
+
+        destroy_trace_option_files(topts);
+        topts = create_trace_option_files(tr, t);
+}
+
+static int tracing_set_tracer(struct trace_array *tr, const char *buf)
+{
         struct tracer *t;
 #ifdef CONFIG_TRACER_MAX_TRACE
         bool had_max_tr;
@@ -4172,14 +4187,7 @@ static int tracing_set_tracer(struct trace_array *tr, const char *buf)
                 free_snapshot(tr);
         }
 #endif
-        /*
-         * Only enable if the directory has been created already.
-         * Currently, only the top instance has options
-         */
-        if (tr->dir && tr->flags & TRACE_ARRAY_FL_GLOBAL) {
-                destroy_trace_option_files(topts);
-                topts = create_trace_option_files(tr, t);
-        }
+        update_tracer_options(tr, t);
 
 #ifdef CONFIG_TRACER_MAX_TRACE
         if (t->use_max_tr && !had_max_tr) {
@@ -6578,6 +6586,10 @@ static __init int tracer_init_debugfs(void)
 
         create_trace_options_dir(&global_trace);
 
+        /* If the tracer was started via cmdline, create options for it here */
+        if (global_trace.current_trace != &nop_trace)
+                update_tracer_options(&global_trace, global_trace.current_trace);
+
         return 0;
 }