Merge branch 'master' of ssh://sources.redhat.com/git/systemtap into work

1 files changed, 20 insertions, 0 deletions

diff --git a/testsuite/systemtap.examples/general/para-callgraph.stp b/testsuite/systemtap.examples/general/para-callgraph.stp
new file mode 100644
index 00000000..1afb8837
--- /dev/null
+++ b/testsuite/systemtap.examples/general/para-callgraph.stp
@@ -0,0 +1,20 @@
+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) }