[PATCH] rcu: Add missing __releases() annotation

[Jules Irenge]

Sparse report a warning at rcu_print_task_stall()

"warning: context imbalance in rcu_print_task_stall - unexpected unlock"

The root cause is a missing annotation at  rcu_print_task_stall() function

Add the missing __releases(rnp->lock) annotation

Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx>
---
 kernel/rcu/tree_stall.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h
index 59b95cc5cbdf..18b2d5274d65 100644
--- a/kernel/rcu/tree_stall.h
+++ b/kernel/rcu/tree_stall.h
@@ -314,6 +314,7 @@ static void rcu_print_detail_task_stall_rnp(struct rcu_node *rnp)
  * tasks blocked within RCU read-side critical sections.
  */
 static int rcu_print_task_stall(struct rcu_node *rnp, unsigned long flags)
+	__releases(rnp->lock)
 {
 	raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
 	return 0;
-- 
2.31.1