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-rw-r--r--tools/perf/Documentation/perf-diff.txt7
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index 58efab72d2e5..8e4a3f093135 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -81,8 +81,11 @@ OPTIONS
--force::
Don't do ownership validation.
---symfs=<directory>::
- Look for files with symbols relative to this directory.
+--symfs=<directory[,layout]>::
+ Look for files with symbols relative to this directory. The optional
+ layout can be 'hierarchy' (default, matches full path) or 'flat'
+ (only matches base name). This is useful when debug files are stored
+ in a flat directory structure.
-b::
--baseline-only::