initial support for static userspace probes via systemtap
This adds a --enable-systemtap configure option, which will then
add static tracepoints to the generated libosmocore binary.
At this point, only two tracepoints are supported: log_start
and log_done. They can be used to trace the amount of time
a libosmocore-using application spends in potentiall blocking calls to
log to stderr or to files.
Related: OS#4311
Change-Id: I7e1ab664241deb524c9582cbd1bec31af46c747e
diff --git a/tapset/libosmocore.stp b/tapset/libosmocore.stp
new file mode 100644
index 0000000..0ec3c42
--- /dev/null
+++ b/tapset/libosmocore.stp
@@ -0,0 +1,18 @@
+/* libosmocore tapset
+ *
+ * This file is part of libosmocore.
+ *
+ * Each probe defines the probe name and a full probestr which consist of the probe name and between
+ * brackets all argument names and values.
+ */
+
+probe libosmocore_log_start = process("libosmocore").mark("log_start")
+{
+ count = $arg1;
+ probestr = sprintf("%s(count=%d), $$name, count);
+}
+
+probe libosmocore_log_done = process("libosmocore").mark("log_done")
+{
+ probestr = sprintf("%s", $$name);
+}