1 files changed, 25 insertions, 0 deletions

diff --git a/trace-ftrace.c b/trace-ftrace.c
index 193e85d..76aef5b 100644
--- a/trace-ftrace.c
+++ b/trace-ftrace.c
@@ -25,6 +25,20 @@
 
 #include "trace-cmd.h"
 
+struct plugin_option trace_ftrace_options[] = {
+        {
+                .name = "tailprint",
+                .plugin_alias = "fgraph",
+                .description =
+                "Print function name at function exit in function graph",
+        },
+        {
+                .name = NULL,
+        }
+};
+
+static struct plugin_option *fgraph_tail = &trace_ftrace_options[0];
+
 static void find_long_size(struct tracecmd_ftrace *finfo)
 {
         finfo->long_size = tracecmd_long_size(finfo->handle);
@@ -290,6 +304,8 @@ fgraph_ret_handler(struct trace_seq *s, struct record *record,
         struct tracecmd_ftrace *finfo = context;
         unsigned long long rettime, calltime;
         unsigned long long duration, depth;
+        unsigned long long val;
+        const char *func;
         int i;
 
         ret_event_check(finfo, event->pevent);
@@ -317,6 +333,15 @@ fgraph_ret_handler(struct trace_seq *s, struct record *record,
 
         trace_seq_putc(s, '}');
 
+        if (fgraph_tail->set) {
+                if (pevent_get_field_val(s, event, "func", record, &val, 0))
+                        return 0;
+                func = pevent_find_function(event->pevent, val);
+                if (!func)
+                        return 0;
+                trace_seq_printf(s, " /* %s */", func);
+        }
+
         return 0;
 }