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rcu: Add missing __releases() annotation

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Sparse reports a warning at rcu_print_task_stall():

"warning: context imbalance in rcu_print_task_stall - unexpected unlock"

The root cause is a missing annotation on rcu_print_task_stall().

This commit therefore adds the missing __releases(rnp->lock) annotation.

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Jules Irenge 2021-04-29 00:12:19 +01:00 • committed by Paul E. McKenney
parent 0223846010
commit c70360c334
1 changed files with 1 additions and 0 deletions
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kernel/rcu/tree_stall.h
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@ -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;