linux-kernel - [PATCH] perf jevents: Fix sys_event_tables to be freed like arch_std

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Message-Id: <20210928102938.69681-1-likexu@tencent.com>
Date:   Tue, 28 Sep 2021 18:29:38 +0800
From:   Like Xu <like.xu.linux@...il.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        John Garry <john.garry@...wei.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] perf jevents: Fix sys_event_tables to be freed like arch_std_events

From: Like Xu <likexu@...cent.com>

The compiler reports that free_sys_event_tables() is dead code. But
according to the semantics, the "LIST_HEAD(arch_std_events)" should
also be released, just like we do with 'arch_std_events' in the main().

Fixes: e9d32c1bf0cd7a98 ("perf vendor events: Add support for arch standard events")
Signed-off-by: Like Xu <likexu@...cent.com>
---
 tools/perf/pmu-events/jevents.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 6731b3cf0c2f..7c887d37b893 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -1285,6 +1285,7 @@ int main(int argc, char *argv[])
 	}
 
 	free_arch_std_events();
+	free_sys_event_tables();
 	free(mapfile);
 	return 0;
 
@@ -1306,6 +1307,7 @@ int main(int argc, char *argv[])
 		create_empty_mapping(output_file);
 err_out:
 	free_arch_std_events();
+	free_sys_event_tables();
 	free(mapfile);
 	return ret;
 }
-- 
2.32.0