sched: Make warning less noisy

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20091216170517.807938893@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index 8a2bfd3..af7dfa7 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2041,7 +2041,7 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
         * We should never call set_task_cpu() on a blocked task,
         * ttwu() will sort out the placement.
         */
-       WARN_ON(p->state != TASK_RUNNING && p->state != TASK_WAKING);
+       WARN_ON_ONCE(p->state != TASK_RUNNING && p->state != TASK_WAKING);
 #endif
 
        trace_sched_migrate_task(p, new_cpu);