1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9107b387e91f..c8d1b2be28ef 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -779,6 +779,13 @@ and is between 256 and 4096 characters. It is defined in the file
                         by the set_ftrace_notrace file in the debugfs
                         tracing directory.
 
+        ftrace_graph_filter=[function-list]
+                        [FTRACE] Limit the top level callers functions traced
+                        by the function graph tracer at boot up.
+                        function-list is a comma separated list of functions
+                        that can be changed at run time by the
+                        set_graph_function file in the debugfs tracing directory.
+
         gamecon.map[2|3]=
                         [HW,JOY] Multisystem joystick and NES/SNES/PSX pad
                         support via parallel port (up to 5 devices per port)