Add kernel-style events for sched_trace_XXX() functions

Enable kernel-style events (tracepoint) for Litmus. Litmus events
trace the same functions as the sched_trace_XXX(), but can be
enabled independently.

So, why another tracing infrastructure then:
- Litmus tracepoints can be recorded and analyzed together (single
  time reference) with all other kernel tracing events (e.g.,
  sched:sched_switch, etc.). It's easier to correlate the effects
  of kernel events on litmus tasks.

- It enables a quick way to visualize and process schedule traces
  using trace-cmd utility and kernelshark visualizer.
  Kernelshark lacks unit-trace's schedule-correctness checks, but
  it enables a fast view of schedule traces and it has several
  filtering options (for all kernel events, not only Litmus').

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index baaca61bc3a3..2229d0deec4b 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -80,14 +80,14 @@
 #include "workqueue_sched.h"
 #include "sched_autogroup.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/sched.h>
+
 #include <litmus/sched_trace.h>
 #include <litmus/trace.h>
 
 static void litmus_tick(struct rq*, struct task_struct*);
 
-#define CREATE_TRACE_POINTS
-#include <trace/events/sched.h>
-
 /*
  * Convert user-nice values [ -20 ... 0 ... 19 ]
  * to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ],