1 files changed, 15 insertions, 2 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9243dd84f4d6..fcd3bfbe74e8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -751,12 +751,25 @@ and is between 256 and 4096 characters. It is defined in the file
                         ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.
 
         ftrace=[tracer]
-                        [ftrace] will set and start the specified tracer
+                        [FTRACE] will set and start the specified tracer
                         as early as possible in order to facilitate early
                         boot debugging.
 
         ftrace_dump_on_oops
-                        [ftrace] will dump the trace buffers on oops.
+                        [FTRACE] will dump the trace buffers on oops.
+
+        ftrace_filter=[function-list]
+                        [FTRACE] Limit the functions traced by the function
+                        tracer at boot up. function-list is a comma separated
+                        list of functions. This list can be changed at run
+                        time by the set_ftrace_filter file in the debugfs
+                        tracing directory. 
+
+        ftrace_notrace=[function-list]
+                        [FTRACE] Do not trace the functions specified in
+                        function-list. This list can be changed at run time
+                        by the set_ftrace_notrace file in the debugfs
+                        tracing directory.
 
         gamecon.map[2|3]=
                         [HW,JOY] Multisystem joystick and NES/SNES/PSX pad