diff --git a/scripts/tracetool/backend/stderr.py b/scripts/tracetool/backend/stderr.py
index 2a1e9064c3..ca58054621 100644
--- a/scripts/tracetool/backend/stderr.py
+++ b/scripts/tracetool/backend/stderr.py
@@ -21,6 +21,9 @@ PUBLIC = True
 
 def generate_h_begin(events):
     out('#include <stdio.h>',
+        '#include <sys/time.h>',
+        '#include <sys/types.h>',
+        '#include <unistd.h>',
         '#include "trace/control.h"',
         '')
 
@@ -31,7 +34,12 @@ def generate_h(event):
         argnames = ", " + argnames
 
     out('    if (trace_event_get_state(%(event_id)s)) {',
-        '        fprintf(stderr, "%(name)s " %(fmt)s "\\n" %(argnames)s);',
+        '        struct timeval _now;',
+        '        gettimeofday(&_now, NULL);',
+        '        fprintf(stderr, "%%d@%%zd.%%06zd:%(name)s " %(fmt)s "\\n",',
+        '                        getpid(),',
+        '                        (size_t)_now.tv_sec, (size_t)_now.tv_usec',
+        '                        %(argnames)s);',
         '    }',
         event_id="TRACE_" + event.name.upper(),
         name=event.name,