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-rw-r--r--tools/perf/Documentation/perf-diff.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index f50ca0fef0a4..be65bd55ab2a 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -182,6 +182,10 @@ OPTIONS
--tid=::
Only diff samples for given thread ID (comma separated list).
+--stream::
+ Enable hot streams comparison. Stream can be a callchain which is
+ aggregated by the branch records from samples.
+
COMPARISON
----------
The comparison is governed by the baseline file. The baseline perf.data