1 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/systemtap.examples/general/keyhack.stp b/testsuite/systemtap.examples/general/keyhack.stp
new file mode 100755
index 00000000..3137baad
--- /dev/null
+++ b/testsuite/systemtap.examples/general/keyhack.stp
@@ -0,0 +1,15 @@
+#! /usr/bin/env stap
+
+# This is not useful, but it demonstrates that
+# Systemtap can modify variables in a running kernel.
+
+# Usage: ./keyhack.stp -g
+
+probe kernel.function("kbd_event") {
+	# Changes 'm' to 'b' .
+	if ($event_code == 50) $event_code = 48
+}
+
+probe end {
+	printf("\nDONE\n")
+}