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-rw-r--r--tools/perf/Documentation/perf-report.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 1cb8fac596b1..89cab84e92fd 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -351,7 +351,10 @@ OPTIONS
--percent-limit::
Do not show entries which have an overhead under that percent.
- (Default: 0).
+ (Default: 0). Note that this option also sets the percent limit (threshold)
+ of callchains. However the default value of callchain threshold is
+ different than the default value of hist entries. Please see the
+ --call-graph option for details.
--percentage::
Determine how to display the overhead percentage of filtered entries.