From: Like Xu <likexu@tencent.com>
Date: Tue, 28 Sep 2021 10:29:38 +0000 (+0800)
Subject: perf jevents: Free the sys_event_tables list after processing entries
X-Git-Tag: v5.14.12~55
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=37e2d7fe11ae61fd78396066efe9ca88a5ecb5c1;p=thirdparty%2Fkernel%2Fstable.git

perf jevents: Free the sys_event_tables list after processing entries

[ Upstream commit b94729919db2c6737501c36ea6526a36d5d63fa2 ]

The compiler reports that free_sys_event_tables() is dead code.

But according to the semantics, the "LIST_HEAD(sys_event_tables)" should
also be released, just like we do with 'arch_std_events' in main().

Fixes: e9d32c1bf0cd7a98 ("perf vendor events: Add support for arch standard events")
Signed-off-by: Like Xu <likexu@tencent.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210928102938.69681-1-likexu@tencent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 9604446f8360b..8b536117e154f 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -1284,6 +1284,7 @@ int main(int argc, char *argv[])
 	}
 
 	free_arch_std_events();
+	free_sys_event_tables();
 	free(mapfile);
 	return 0;
 
@@ -1305,6 +1306,7 @@ err_close_eventsfp:
 		create_empty_mapping(output_file);
 err_out:
 	free_arch_std_events();
+	free_sys_event_tables();
 	free(mapfile);
 	return ret;
 }