linux-kernel - [PATCH 3/3] perf tests: Improve temp file cleanup in test_arm

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Date:   Tue, 21 Sep 2021 14:10:09 +0100
From:   James Clark <james.clark@....com>
To:     acme@...nel.org, leo.yan@...aro.com,
        linux-perf-users@...r.kernel.org
Cc:     James Clark <james.clark@....com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] perf tests: Improve temp file cleanup in test_arm_coresight.sh

Cleanup perf.data.old files which are also dropped by perf, handle
sigint and propagate it to the parent in case the test is run in a bash
while loop and don't create the temp files if the test will be skipped.

Signed-off-by: James Clark <james.clark@....com>
---
 tools/perf/tests/shell/test_arm_coresight.sh | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh
index c9eef0bba6f1..6de53b7ef5ff 100755
--- a/tools/perf/tests/shell/test_arm_coresight.sh
+++ b/tools/perf/tests/shell/test_arm_coresight.sh
@@ -9,8 +9,6 @@
 # SPDX-License-Identifier: GPL-2.0
 # Leo Yan <leo.yan@...aro.org>, 2020
 
-perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
-file=$(mktemp /tmp/temporary_file.XXXXX)
 glb_err=0
 
 skip_if_no_cs_etm_event() {
@@ -22,13 +20,20 @@ skip_if_no_cs_etm_event() {
 
 skip_if_no_cs_etm_event || exit 2
 
+perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
+file=$(mktemp /tmp/temporary_file.XXXXX)
+
 cleanup_files()
 {
 	rm -f ${perfdata}
 	rm -f ${file}
+	rm -f "${perfdata}.old"
+	trap - exit term int
+	kill -2 $$
+	exit $glb_err
 }
 
-trap cleanup_files exit
+trap cleanup_files exit term int
 
 record_touch_file() {
 	echo "Recording trace (only user mode) with path: CPU$2 => $1"
-- 
2.28.0