[PATCH 13/17] tools/perf/tests: Fix all POSIX sh warnings in perf shell test test_brstack.sh

[Athira Rajeev]

From: Geetika <geetika at linux.ibm.com>

Fix all the POSIX sh warnings in perf shell test test_brstack.sh
Warnings fixed :
* In POSIX sh, using lower/mixed case for signal names is undefined.
Correcting that in this script.
* In POSIX sh, 'local' is undefined.
local is supported in many shells, but it's not in POSIX.
In POSIX sh, you can adopt some convention to avoid accidentally
overwriting variables names, e.g. prefixing with the function name,
that is what I have done here.

Signed-off-by: Athira Rajeev <atrajeev at linux.vnet.ibm.com>
Signed-off-by: Kajol Jain <kjain at linux.ibm.com>
Signed-off-by: Geetika <geetika at linux.ibm.com>
---
 tools/perf/tests/shell/test_brstack.sh | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/perf/tests/shell/test_brstack.sh b/tools/perf/tests/shell/test_brstack.sh
index 1c49d8293003..09908d71c994 100755
--- a/tools/perf/tests/shell/test_brstack.sh
+++ b/tools/perf/tests/shell/test_brstack.sh
@@ -18,7 +18,7 @@ cleanup() {
 	rm -rf $TMPDIR
 }
 
-trap cleanup exit term int
+trap cleanup EXIT TERM INT
 
 test_user_branches() {
 	echo "Testing user branch stack sampling"
@@ -47,17 +47,17 @@ test_user_branches() {
 # first argument <arg0> is the argument passed to "--branch-stack <arg0>,save_type,u"
 # second argument are the expected branch types for the given filter
 test_filter() {
-	local filter=$1
-	local expect=$2
+	test_filter_filter=$1
+	test_filter_expect=$2
 
-	echo "Testing branch stack filtering permutation ($filter,$expect)"
+	echo "Testing branch stack filtering permutation ($test_filter_filter,$test_filter_expect)"
 
-	perf record -o $TMPDIR/perf.data --branch-filter $filter,save_type,u -- ${TESTPROG} > /dev/null 2>&1
+	perf record -o $TMPDIR/perf.data --branch-filter $test_filter_filter,save_type,u -- ${TESTPROG} > /dev/null 2>&1
 	perf script -i $TMPDIR/perf.data --fields brstack | xargs -n1 > $TMPDIR/perf.script
 
 	# fail if we find any branch type that doesn't match any of the expected ones
 	# also consider UNKNOWN branch types (-)
-	if grep -E -vm1 "^[^ ]*/($expect|-|( *))/.*$" $TMPDIR/perf.script; then
+	if grep -E -vm1 "^[^ ]*/($test_filter_expect|-|( *))/.*$" $TMPDIR/perf.script; then
 		return 1
 	fi
 }
-- 
2.39.1