summaryrefslogtreecommitdiffstats
path: root/testsuite/systemtap.examples/small_demos/keyhack.stp
diff options
context:
space:
mode:
authorWilliam Cohen <wcohen@localhost.localdomain>2008-04-24 12:20:13 -0400
committerWilliam Cohen <wcohen@localhost.localdomain>2008-04-24 12:20:13 -0400
commit7f79ea13a0f64573ce13353257d322ae49ef0c27 (patch)
tree60de8da5af4c2bcc26abfb9430fdca66bdc20b98 /testsuite/systemtap.examples/small_demos/keyhack.stp
parentf90f92615df6ff2a62282359281889597e5dbf17 (diff)
downloadsystemtap-steved-7f79ea13a0f64573ce13353257d322ae49ef0c27.tar.gz
systemtap-steved-7f79ea13a0f64573ce13353257d322ae49ef0c27.tar.xz
systemtap-steved-7f79ea13a0f64573ce13353257d322ae49ef0c27.zip
Move examples to testsuite/systemtap.examples
Diffstat (limited to 'testsuite/systemtap.examples/small_demos/keyhack.stp')
-rwxr-xr-xtestsuite/systemtap.examples/small_demos/keyhack.stp15
1 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/systemtap.examples/small_demos/keyhack.stp b/testsuite/systemtap.examples/small_demos/keyhack.stp
new file mode 100755
index 00000000..3137baad
--- /dev/null
+++ b/testsuite/systemtap.examples/small_demos/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")
+}