1 files changed, 5 insertions, 2 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index e29a97235f26..51fb72b5af79 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2708,14 +2708,17 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags)
         int cpu, success = 0;
 
         if (is_realtime(p)) {
-                //WARN_ON(1);
                 TRACE_TASK(p, "try_to_wake_up() state:%d\n", p->state);
         }
 
         smp_wmb();
         raw_spin_lock_irqsave(&p->pi_lock, flags);
-        if (!(p->state & state))
+        if (!(p->state & state)) {
+                if (is_realtime(p)) {
+                        TRACE_TASK(p, "try_to_wake_up() masked out, mask:%x\n", state);
+                }
                 goto out;
+        }
 
         success = 1; /* we're going to change ->state */
         cpu = task_cpu(p);