From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Sun, 28 Mar 2010 03:15:20 +0000 (+0800)
Subject: rcu: make dead code really dead
X-Git-Tag: upstream/snapshot3+hdmi~14619^2~21
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f261414f0d56dd1a0e34888e27d1d4902ad052f3;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

rcu: make dead code really dead

cleanup: make dead code really dead

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index e54c123..6042fb8 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -1236,11 +1236,11 @@ static void force_quiescent_state(struct rcu_state *rsp, int relaxed)
 		break; /* grace period idle or initializing, ignore. */
 
 	case RCU_SAVE_DYNTICK:
-
-		raw_spin_unlock(&rnp->lock);  /* irqs remain disabled */
 		if (RCU_SIGNAL_INIT != RCU_SAVE_DYNTICK)
 			break; /* So gcc recognizes the dead code. */
 
+		raw_spin_unlock(&rnp->lock);  /* irqs remain disabled */
+
 		/* Record dyntick-idle state. */
 		force_qs_rnp(rsp, dyntick_save_progress_counter);
 		raw_spin_lock(&rnp->lock);  /* irqs already disabled */