Hookup sched_trace_XXX() tracing in Linux scheduler

This patch adds context switch tracing to the main Linux scheduler.

1 files changed, 6 insertions, 0 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 377273d6cecc..cbf2995d3871 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -88,6 +88,7 @@
 #include "../smpboot.h"
 
 #include <litmus/trace.h>
+#include <litmus/sched_trace.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/sched.h>
@@ -2293,6 +2294,9 @@ asmlinkage __visible void schedule_tail(struct task_struct *prev)
         /* finish_task_switch() drops rq->lock and enables preemtion */
         preempt_disable();
         rq = finish_task_switch(prev);
+
+        sched_trace_task_switch_to(current);
+
         post_schedule(rq);
 
         if (sched_state_validate_switch())
@@ -2756,6 +2760,7 @@ static void __sched __schedule(void)
         prev = rq->curr;
 
         TS_SCHED_START;
+        sched_trace_task_switch_away(prev);
 
         schedule_debug(prev);
 
@@ -2821,6 +2826,7 @@ static void __sched __schedule(void)
         }
 
         TS_SCHED2_START(prev);
+        sched_trace_task_switch_to(current);
 
         post_schedule(rq);