From: Pranith Kumar <bobby.prani@gmail.com>
Date: Wed, 11 Jun 2014 20:39:41 +0000 (-0400)
Subject: rcu: Fix a sparse warning in rcu_report_unblock_qs_rnp()
X-Git-Tag: v3.17-rc1~137^2^2~1^2
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=b41d1b924d0bd41a225a17f39297b9de0dca93d9;p=~emulex%2Finfiniband.git

rcu: Fix a sparse warning in rcu_report_unblock_qs_rnp()

This commit annotates rcu_report_unblock_qs_rnp() in order to fix the
following sparse warning:

kernel/rcu/tree_plugin.h:990:13: warning: context imbalance in 'rcu_report_unblock_qs_rnp' - unexpected unlock

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 0409ba34a05..c66bdcb20c8 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -988,6 +988,7 @@ static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp)
 
 /* Because preemptible RCU does not exist, no quieting of tasks. */
 static void rcu_report_unblock_qs_rnp(struct rcu_node *rnp, unsigned long flags)
+	__releases(rnp->lock)
 {
 	raw_spin_unlock_irqrestore(&rnp->lock, flags);
 }