Add test to compile and run all tracepoints

This checks that kernel.trace("*") will compile, with all context
variables accessed as well.  For kernels without tracepoints, it will
just hit a "begin" and quit.

This doesn't ensure that kernel.trace("*") will always find something
when it should, though...

2 files changed, 26 insertions, 0 deletions

diff --git a/testsuite/systemtap.base/tracepoints.exp b/testsuite/systemtap.base/tracepoints.exp
new file mode 100644
index 00000000..bea461c4
--- /dev/null
+++ b/testsuite/systemtap.base/tracepoints.exp
@@ -0,0 +1,3 @@
+set test "tracepoints"
+set ::result_string {tracepoints OK}
+stap_run2 $srcdir/$subdir/$test.stp
diff --git a/testsuite/systemtap.base/tracepoints.stp b/testsuite/systemtap.base/tracepoints.stp
new file mode 100644
index 00000000..bdb4d730
--- /dev/null
+++ b/testsuite/systemtap.base/tracepoints.stp
@@ -0,0 +1,23 @@
+// This checks that we can compile and register every tracepoint
+// we can find, along with all of their context variables.
+global hits
+probe all_tracepoints = kernel.trace("*")
+{
+    if ($$name . $$vars . $$parms == "")
+        next
+
+    // Allow it to quit once we hit our hundredth tracepoint
+    if (++hits < 100)
+        next
+}
+
+// If there aren't any tracepoints in the kernel,
+// we use "begin" instead to quit right away.
+probe all_tracepoints!, begin {
+    println("tracepoints OK")
+    exit()
+}
+
+// give hits a use so there's no warning
+// when we don't have tracepoints
+probe never { hits++ }