ftrace: trace curr/next tasks

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 12 insertions, 1 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index b9208a0e33a0..673b588b713b 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2398,8 +2398,8 @@ static int sched_balance_self(int cpu, int flag)
 
 void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
 {
-        struct sched_entity *se;
         struct task_struct *p;
+        struct sched_entity *se;
         struct rb_node *curr;
         struct rq *rq = __rq;
 
@@ -2407,6 +2407,17 @@ void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
         if (!curr)
                 return;
 
+        if (rq->cfs.curr) {
+                p = task_of(rq->cfs.curr);
+                __trace_special(__tr, __data,
+                      p->pid, p->se.vruntime, p->se.sum_exec_runtime);
+        }
+        if (rq->cfs.next) {
+                p = task_of(rq->cfs.next);
+                __trace_special(__tr, __data,
+                      p->pid, p->se.vruntime, p->se.sum_exec_runtime);
+        }
+
         while (curr) {
                 se = rb_entry(curr, struct sched_entity, run_node);
                 if (!entity_is_task(se))