sched/debug: Add SCHED_WARN_ON()

Provide SCHED_WARN_ON as wrapper for WARN_ON_ONCE() to avoid
CONFIG_SCHED_DEBUG wrappery.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index fc6ae04ec080..5489d07a4643 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -15,6 +15,12 @@
 #include "cpudeadline.h"
 #include "cpuacct.h"
 
+#ifdef CONFIG_SCHED_DEBUG
+#define SCHED_WARN_ON(x)        WARN_ONCE(x, #x)
+#else
+#define SCHED_WARN_ON(x)        ((void)(x))
+#endif
+
 struct rq;
 struct cpuidle_state;
 
@@ -1309,7 +1315,7 @@ static inline void idle_set_state(struct rq *rq,
 
 static inline struct cpuidle_state *idle_get_state(struct rq *rq)
 {
-        WARN_ON(!rcu_read_lock_held());
+        SCHED_WARN_ON(!rcu_read_lock_held());
         return rq->idle_state;
 }
 #else