[PATCH 07/17] perf/tests/shell : Shellcheck fixes for perf test "test_arm_coresight.sh"

[Athira Rajeev <atrajeev@linux.vnet.ibm.com>]

From: Anushree Mathur <anushree.mathur@linux.vnet.ibm.com>

Fixed the following shellcheck issues in test_arm_coresight.sh file:

In tools/perf/tests/shell/test_arm_coresight.sh line 31:
        trap - exit term int
               ^--^ SC2039: In POSIX sh, using lower/mixed case for signal names is undefined.
                    ^--^ SC2039: In POSIX sh, using lower/mixed case for signal names is undefined.
                         ^-^ SC2039: In POSIX sh, using lower/mixed case for signal names is undefined.

In tools/perf/tests/shell/test_arm_coresight.sh line 35:
trap cleanup_files exit term int
                   ^--^ SC2039: In POSIX sh, using lower/mixed case for signal names is undefined.
                        ^--^ SC2039: In POSIX sh, using lower/mixed case for signal names is undefined.
                             ^-^ SC2039: In POSIX sh, using lower/mixed case for signal names is undefined.

In tools/perf/tests/shell/test_arm_coresight.sh line 92:
        if [ $? -eq 0 -a -e "$1/enable_sink" ]; then
                      ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.

Fixed above warnings by:
1)Capitalize signals(INT, TERM, EXIT) to avoid mixed/lower case naming of
signals.
2)Expression [p -a q] was not defined,changed it to [p] && [q] to avoid the
ambiguity as this is older format using -a or -o ,now we use [p] && [q] in
place of [p -a q] and [p] || [q] in place of [p -o q].

Result after fixing the issues:

shell$ shellcheck -S warning test_arm_coresight.sh
shell$

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Anushree Mathur <anushree.mathur@linux.vnet.ibm.com>
---
 tools/perf/tests/shell/test_arm_coresight.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh
index 482009e17bda..f1bf5621160f 100755
--- a/tools/perf/tests/shell/test_arm_coresight.sh
+++ b/tools/perf/tests/shell/test_arm_coresight.sh
@@ -28,11 +28,11 @@ cleanup_files()
 	rm -f ${perfdata}
 	rm -f ${file}
 	rm -f "${perfdata}.old"
-	trap - exit term int
+	trap - EXIT TERM INT
 	exit $glb_err
 }
 
-trap cleanup_files exit term int
+trap cleanup_files EXIT TERM INT
 
 record_touch_file() {
 	echo "Recording trace (only user mode) with path: CPU$2 => $1"
@@ -89,7 +89,7 @@ is_device_sink() {
 	# cannot support perf PMU.
 	echo "$1" | grep -E -q -v "tpiu"
 
-	if [ $? -eq 0 -a -e "$1/enable_sink" ]; then
+	if [ $? -eq 0 ] && [ -e "$1/enable_sink" ]; then
 
 		pmu_dev="/sys/bus/event_source/devices/cs_etm/sinks/$2"
 
-- 
2.39.1