[tip/core/rcu,24/30] rcu/nocb: Add missing annotation for rcu_nocb_bypass_unlock()
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Message ID 20200214235607.13749-24-paulmck@kernel.org
State In Next
Commit 76213edb699c87ccd9b1b58c0d500cfe27736e5a
Headers show
  • Miscellaneous fixes for v5.7
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Commit Message

Paul E. McKenney Feb. 14, 2020, 11:56 p.m. UTC
From: Jules Irenge <jbi.octave@gmail.com>

Sparse reports warning at rcu_nocb_bypass_unlock()

warning: context imbalance in rcu_nocb_bypass_unlock() - unexpected unlock

The root cause is a missing annotation of rcu_nocb_bypass_unlock()
which causes the warning.

This commit therefore adds the missing __releases(&rdp->nocb_bypass_lock)

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
 kernel/rcu/tree_plugin.h | 1 +
 1 file changed, 1 insertion(+)

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diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 6db2cad..3846519 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1530,6 +1530,7 @@  static bool rcu_nocb_bypass_trylock(struct rcu_data *rdp)
  * Release the specified rcu_data structure's ->nocb_bypass_lock.
 static void rcu_nocb_bypass_unlock(struct rcu_data *rdp)
+	__releases(&rdp->nocb_bypass_lock)