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diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 7315f155803f..8dbe2119686a 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -525,6 +525,17 @@ include::itrace.txt[]
Configure time quantum for time sort key. Default 100ms.
Accepts s, us, ms, ns units.
+--total-cycles::
+ When --total-cycles is specified, it supports sorting for all blocks by
+ 'Sampled Cycles%'. This is useful to concentrate on the globally hottest
+ blocks. In output, there are some new columns:
+
+ 'Sampled Cycles%' - block sampled cycles aggregation / total sampled cycles
+ 'Sampled Cycles' - block sampled cycles aggregation
+ 'Avg Cycles%' - block average sampled cycles / sum of total block average
+ sampled cycles
+ 'Avg Cycles' - block average sampled cycles
+
include::callchain-overhead-calculation.txt[]
SEE ALSO