diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index 20d97d84ea1c37164005a4f38b8af5e23104ef93..6a9ec2b353103e4460c2477e34b84e6ecb5a02d6 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -19,6 +19,18 @@ If no parameters are passed it will assume perf.data.old and perf.data.
 
 OPTIONS
 -------
+-M::
+--displacement::
+        Show position displacement relative to baseline.
+
+-D::
+--dump-raw-trace::
+        Dump raw trace in ASCII.
+
+-m::
+--modules::
+        Load module symbols. WARNING: use only with -k and LIVE kernel
+
 -d::
 --dsos=::
 	Only consider symbols in these dsos. CSV that understands
@@ -42,7 +54,7 @@ OPTIONS
 --field-separator=::
 
 	Use a special separator character and don't pad with spaces, replacing
-	all occurances of this separator in symbol names (and other output)
+	all occurrences of this separator in symbol names (and other output)
 	with a '.' character, that thus it's the only non valid separator.
 
 -v::
@@ -50,6 +62,11 @@ OPTIONS
 	Be verbose, for instance, show the raw counts in addition to the
 	diff.
 
+-f::
+--force::
+       Don't complain, do it.
+
+
 SEE ALSO
 --------
 linkperf:perf-record[1]