linux-kernel - [PATCH 3/3] perf list: Document -v option deduplication feature

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Message-Id: <20250225164639.522741-4-james.clark@linaro.org>
Date: Tue, 25 Feb 2025 16:46:30 +0000
From: James Clark <james.clark@...aro.org>
To: linux-perf-users@...r.kernel.org,
	irogers@...gle.com,
	namhyung@...nel.org,
	cyy@...self.name
Cc: James Clark <james.clark@...aro.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	Yoshihiro Furudera <fj5100bi@...itsu.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Weilin Wang <weilin.wang@...el.com>,
	Junhao He <hejunhao3@...wei.com>,
	Jean-Philippe Romain <jean-philippe.romain@...s.st.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] perf list: Document -v option deduplication feature

-v disables deduplication of similarly suffixed PMUs so add it to the
help and doc strings.

Signed-off-by: James Clark <james.clark@...aro.org>
---
 tools/perf/Documentation/perf-list.txt | 2 +-
 tools/perf/builtin-list.c              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index c3ffd93f94d7..8914f12d2b85 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -27,7 +27,7 @@ Don't print descriptions.
 
 -v::
 --long-desc::
-Print longer event descriptions.
+Print longer event descriptions and all similar PMUs with alphanumeric suffixes.
 
 --debug::
 Enable debugging output.
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index c19826f218a0..fed482adb039 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -527,7 +527,7 @@ int cmd_list(int argc, const char **argv)
 		OPT_BOOLEAN('d', "desc", &default_ps.desc,
 			    "Print extra event descriptions. --no-desc to not print."),
 		OPT_BOOLEAN('v', "long-desc", &default_ps.long_desc,
-			    "Print longer event descriptions."),
+			    "Print longer event descriptions and all similar PMUs with alphanumeric suffixes."),
 		OPT_BOOLEAN(0, "details", &default_ps.detailed,
 			    "Print information on the perf event names and expressions used internally by events."),
 		OPT_STRING('o', "output", &output_path, "file", "output file name"),
-- 
2.34.1