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-rw-r--r--tools/perf/Documentation/perf-stat.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 46027e1aedb7..2fe87fb558f0 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -126,6 +126,12 @@ use --per-socket in addition to -a. (system-wide). The output includes the
socket number and the number of online processors on that socket. This is
useful to gauge the amount of aggregation.
+--per-core::
+Aggregate counts per physical processor for system-wide mode measurements. This
+is a useful mode to detect imbalance between physical cores. To enable this mode,
+use --per-core in addition to -a. (system-wide). The output includes the
+core number and the number of online logical processors on that physical processor.
+
EXAMPLES
--------