[PATCH v7 21/23] tools/ksw: add test script

[Jinchao Wang <wangjinchao600@gmail.com>]

Provide a shell script to trigger test cases.

Signed-off-by: Jinchao Wang <wangjinchao600@gmail.com>
---
 tools/kstackwatch/kstackwatch_test.sh | 52 +++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100755 tools/kstackwatch/kstackwatch_test.sh

diff --git a/tools/kstackwatch/kstackwatch_test.sh b/tools/kstackwatch/kstackwatch_test.sh
new file mode 100755
index 000000000000..35cad036ecee
--- /dev/null
+++ b/tools/kstackwatch/kstackwatch_test.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+echo "IMPORTANT: Before running, make sure you have updated the config values!"
+
+usage() {
+	echo "Usage: $0 [0-5]"
+	echo "  0  - test watch fire"
+	echo "  1  - test canary overflow"
+	echo "  2  - test recursive depth"
+	echo "  3  - test silent corruption"
+	echo "  4  - test multi-threaded silent corruption"
+	echo "  5  - test multi-threaded overflow"
+}
+
+run_test() {
+	local test_num=$1
+	case "$test_num" in
+	0) echo fn=test_watch_fire fo=0x29 wl=8 >/sys/kernel/debug/kstackwatch/config
+	   echo test0 > /sys/kernel/debug/kstackwatch/test
+	   ;;
+	1) echo fn=test_canary_overflow fo=0x14 >/sys/kernel/debug/kstackwatch/config
+	   echo test1 >/sys/kernel/debug/kstackwatch/test
+	   ;;
+	2) echo fn=test_recursive_depth fo=0x2f dp=3 wl=8 so=0 >/sys/kernel/debug/kstackwatch/config
+	   echo test2 >/sys/kernel/debug/kstackwatch/test
+	   ;;
+	3) echo fn=test_mthread_victim fo=0x4c so=64 wl=8 >/sys/kernel/debug/kstackwatch/config
+	   echo test3 >/sys/kernel/debug/kstackwatch/test
+	   ;;
+	4) echo fn=test_mthread_victim fo=0x4c so=64 wl=8 >/sys/kernel/debug/kstackwatch/config
+	   echo test4 >/sys/kernel/debug/kstackwatch/test
+	   ;;
+	5) echo fn=test_mthread_buggy fo=0x16 so=0x100 wl=8 >/sys/kernel/debug/kstackwatch/config
+	   echo test5 >/sys/kernel/debug/kstackwatch/test
+	   ;;
+	*) usage
+	   exit 1 ;;
+	esac
+	# Reset watch after test
+	echo >/sys/kernel/debug/kstackwatch/config
+}
+
+# Check root and module
+[ "$EUID" -ne 0 ] && echo "Run as root" && exit 1
+for f in /sys/kernel/debug/kstackwatch/config /sys/kernel/debug/kstackwatch/test; do
+	[ ! -f "$f" ] && echo "$f not found" && exit 1
+done
+
+# Run
+[ -z "$1" ] && { usage; exit 0; }
+run_test "$1"
-- 
2.43.0