ftrace: sched tracer, trace full rbtree

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

1 files changed, 32 insertions, 3 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 53ab1174664f..b9208a0e33a0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2394,6 +2394,35 @@ static int sched_balance_self(int cpu, int flag)
 
 #endif /* CONFIG_SMP */
 
+#ifdef CONFIG_CONTEXT_SWITCH_TRACER
+
+void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
+{
+        struct sched_entity *se;
+        struct task_struct *p;
+        struct rb_node *curr;
+        struct rq *rq = __rq;
+
+        curr = first_fair(&rq->cfs);
+        if (!curr)
+                return;
+
+        while (curr) {
+                se = rb_entry(curr, struct sched_entity, run_node);
+                if (!entity_is_task(se))
+                        continue;
+
+                p = task_of(se);
+
+                __trace_special(__tr, __data,
+                              p->pid, p->se.vruntime, p->se.sum_exec_runtime);
+
+                curr = rb_next(curr);
+        }
+}
+
+#endif
+
 /***
  * try_to_wake_up - wake up a thread
  * @p: the to-be-woken-up thread
@@ -2468,7 +2497,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
 
 out_activate:
 #endif /* CONFIG_SMP */
-        ftrace_wake_up_task(p, rq->curr);
+        ftrace_wake_up_task(rq, p, rq->curr);
         schedstat_inc(p, se.nr_wakeups);
         if (sync)
                 schedstat_inc(p, se.nr_wakeups_sync);
@@ -2613,7 +2642,7 @@ void wake_up_new_task(struct task_struct *p, unsigned long clone_flags)
                 p->sched_class->task_new(rq, p);
                 inc_nr_running(rq);
         }
-        ftrace_wake_up_task(p, rq->curr);
+        ftrace_wake_up_task(rq, p, rq->curr);
         check_preempt_curr(rq, p);
 #ifdef CONFIG_SMP
         if (p->sched_class->task_wake_up)
@@ -2786,7 +2815,7 @@ context_switch(struct rq *rq, struct task_struct *prev,
         struct mm_struct *mm, *oldmm;
 
         prepare_task_switch(rq, prev, next);
-        ftrace_ctx_switch(prev, next);
+        ftrace_ctx_switch(rq, prev, next);
         mm = next->mm;
         oldmm = prev->active_mm;
         /*