[PATCH] selftests/mm: emit KTAP output from ksft_kmemleak_dedup

ksft_kmemleak_dedup.sh reports its result with raw "SKIP:"/"FAIL":"PASS:"
echoes and bare exit codes instead of KTAP, so parse_kselftest.py cannot
read it.  Convert it to the ktap_helpers.sh API, like its sibling
ksft_kmemleak_confirm.sh.

Signed-off-by: Song Hu <[email protected]>
---
 .../selftests/mm/ksft_kmemleak_dedup.sh       | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/mm/ksft_kmemleak_dedup.sh b/tools/testing/selftests/mm/ksft_kmemleak_dedup.sh
index d01950244490..2db7f006808f 100755
--- a/tools/testing/selftests/mm/ksft_kmemleak_dedup.sh
+++ b/tools/testing/selftests/mm/ksft_kmemleak_dedup.sh
@@ -19,24 +19,30 @@
 #
 # Author: Breno Leitao <[email protected]>
 
-ksft_skip=4
+# KTAP output helpers (ktap_skip_all, ktap_exit_fail_msg, ktap_test_pass, ...).
+DIR="$(dirname "$(readlink -f "$0")")"
+# shellcheck source=../kselftest/ktap_helpers.sh
+source "${DIR}"/../kselftest/ktap_helpers.sh
+
 KMEMLEAK=/sys/kernel/debug/kmemleak
 VERBOSE_PARAM=/sys/module/kmemleak/parameters/verbose
 MODULE=kmemleak-test
 
+ktap_print_header
+
 skip() {
-	echo "SKIP: $*"
-	exit $ksft_skip
+	ktap_skip_all "$*"
+	exit "$KSFT_SKIP"
 }
 
 fail() {
-	echo "FAIL: $*"
-	exit 1
+	ktap_exit_fail_msg "$*"
 }
 
 pass() {
-	echo "PASS: $*"
-	exit 0
+	ktap_set_plan 1
+	ktap_test_pass "$*"
+	ktap_finished
 }
 
 [ "$(id -u)" -eq 0 ] || skip "must run as root"
-- 
2.43.0