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-rw-r--r--tools/perf/Documentation/perf-report.txt7
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diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 9b430e98712..19b9092cf8b 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -153,6 +153,13 @@ OPTIONS
information which may be very large and thus may clutter the display.
It currently includes: cpu and numa topology of the host system.
+-b::
+--branch-stack::
+ Use the addresses of sampled taken branches instead of the instruction
+ address to build the histograms. To generate meaningful output, the
+ perf.data file must have been obtained using perf record -b xxx where
+ xxx is a branch filter option.
+
SEE ALSO
--------
linkperf:perf-stat[1], linkperf:perf-annotate[1]