1 files changed, 22 insertions, 0 deletions
diff --git a/testsuite/systemtap.examples/general/para-callgraph.stp b/testsuite/systemtap.examples/general/para-callgraph.stp
new file mode 100755
index 00000000..e28f5d6b
--- /dev/null
+++ b/testsuite/systemtap.examples/general/para-callgraph.stp
@@ -0,0 +1,22 @@
+#! /usr/bin/env stap
+
+function trace(entry_p) {
+   if(tid() in trace)
+       printf("%s%s%s\n",thread_indent(entry_p),
+		       	 (entry_p>0?"->":"<-"),
+		         probefunc())
+}
+
+global trace
+probe kernel.function(@1).call {
+   if (execname() == "stapio") next # skip our own helper process
+   trace[tid()] = 1
+   trace(1)
+}
+probe kernel.function(@1).return {
+   trace(-1)
+   delete trace[tid()]
+}
+
+probe kernel.function(@2).call { trace(1) }
+probe kernel.function(@2).return { trace(-1) }