summaryrefslogtreecommitdiffstats
path: root/testsuite/systemtap.examples/small_demos/keyhack.stp
diff options
context:
space:
mode:
authorFrank Ch. Eigler <fche@elastic.org>2008-04-24 13:55:34 -0400
committerFrank Ch. Eigler <fche@elastic.org>2008-04-24 13:55:34 -0400
commitfe44e686c32ccb684bd5ec6df57aed00532fc024 (patch)
tree260953c84c8679572d65bf83a65884050f91d2f7 /testsuite/systemtap.examples/small_demos/keyhack.stp
parentf72154b33e67069cd7c308d24255574b9fbacb1d (diff)
parent478e10649195945adf7153fe5254932df1e2a902 (diff)
downloadsystemtap-steved-fe44e686c32ccb684bd5ec6df57aed00532fc024.tar.gz
systemtap-steved-fe44e686c32ccb684bd5ec6df57aed00532fc024.tar.xz
systemtap-steved-fe44e686c32ccb684bd5ec6df57aed00532fc024.zip
Merge branch 'master' of ssh://sources.redhat.com/git/systemtap
* 'master' of ssh://sources.redhat.com/git/systemtap: Made kernel 2.6.25 changes in task_finder.c. 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")
+}