Feather-Trace: Make inclusion optional

We need to disable Feather-Trace on the Niagara for now, and
there is no reason to always include it, anyway.

1 files changed, 10 insertions, 1 deletions

diff --git a/include/litmus/trace.h b/include/litmus/trace.h
index 04510237ec..dcb0c1b374 100644
--- a/include/litmus/trace.h
+++ b/include/litmus/trace.h
@@ -1,7 +1,8 @@
-
 #ifndef _SYS_TRACE_H_
 #define _SYS_TRACE_H_
 
+#ifdef CONFIG_FEATHER_TRACE
+
 #include <litmus/feather_trace.h>
 #include <litmus/feather_buffer.h>
 
@@ -26,6 +27,14 @@ asmlinkage void save_timestamp(unsigned long event);
 
 #define TIMESTAMP(id) ft_event0(id, save_timestamp)
 
+
+#else /* !CONFIG_FEATHER_TRACE */
+
+#define TIMESTAMP(id) /* no tracing */
+
+#endif
+
+
 /* Convention for timestamps
  * =========================
  *