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authorDavid Smith <dsmith@redhat.com>2008-08-08 12:26:02 -0500
committerDavid Smith <dsmith@redhat.com>2008-08-08 12:26:02 -0500
commita9a23c6ec198c08057989d6c3fc08b8865681bc4 (patch)
tree2d28417ab9a45f3200dcda7acdf84998c9c2b383 /testsuite/systemtap.examples/general/keyhack.stp
parent9963b5fc7945ce939aaa8027ca71927cb77a55ff (diff)
parent751f828801e9bd4739d03a31a77e84c91e075b4e (diff)
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Merge branch 'master' of ssh://sources.redhat.com/git/systemtap into work
Diffstat (limited to 'testsuite/systemtap.examples/general/keyhack.stp')
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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")
+}