perf test: Improve verbose documentation

Add a little more detail on the output expectations for each verbose
level.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250110045736.598281-6-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

diff --git a/tools/perf/Documentation/perf-test.txt b/tools/perf/Documentation/perf-test.txt
index 85f868c324ff3fb2b3b199790aec15c8ee387908..32da0d1fa86ab411434bb77ec47e5e76161613fd 100644 (file)
--- a/tools/perf/Documentation/perf-test.txt
+++ b/tools/perf/Documentation/perf-test.txt
@@ -28,8 +28,11 @@ OPTIONS
        Tests to skip (comma separated numeric list).
 
 -v::
+-vv::
+-vvv::
 --verbose::
-       Be more verbose.
+       With a single '-v', verbose level 1, only failing test output
+       is displayed. With '-vv' and higher all test output is shown.
 
 -S::
 --sequential::