1 files changed, 19 insertions, 0 deletions
diff --git a/runtime/io.c b/runtime/io.c
new file mode 100644
index 00000000..3371df16
--- /dev/null
+++ b/runtime/io.c
@@ -0,0 +1,19 @@
+/** Logs data.
+ * This function is compatible with printk.  In fact it currently
+ * sends all output to vprintk, after sending "STP: ". This allows
+ * us to easily detect SystemTap output in the log file.
+ *
+ * @param fmt A variable number of args.
+ * @bug Lines are limited in length by printk buffer.
+ * @todo Needs replaced with something much faster that does not
+ * use the system log.
+ */
+void dlog (const char *fmt, ...)
+{
+  va_list args;
+  printk("STP: ");
+  va_start(args, fmt);
+  vprintk(fmt, args);
+  va_end(args);
+}
+