From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com,
tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org,
Valdis.Kletnieks@vt.edu, dhowells@redhat.com,
eric.dumazet@gmail.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 02/23] rcu: make dead code really dead
Date: Tue, 20 Apr 2010 14:44:34 -0700 [thread overview]
Message-ID: <1271799895-21028-2-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20100420214431.GA20777@linux.vnet.ibm.com>
From: Lai Jiangshan <laijs@cn.fujitsu.com>
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>
---
kernel/rcutree.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
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 */
--
1.7.0
next prev parent reply other threads:[~2010-04-20 21:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-20 21:44 [PATCH tip/core/rcu 0/23] v3 patches queued for 2.6.35 Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 01/23] rcu: substitute set_need_resched for sending resched IPIs Paul E. McKenney
2010-04-20 21:44 ` Paul E. McKenney [this message]
2010-04-20 21:44 ` [PATCH tip/core/rcu 03/23] rcu: move some code from macro to function Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 04/23] rcu: ignore offline CPUs in last non-dyntick-idle CPU check Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 05/23] rcu: Fix bogus CONFIG_PROVE_LOCKING in comments to reflect reality Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 06/23] rcu: fix now-bogus rcu_scheduler_active comments Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 07/23] rcu: shrink rcutiny by making synchronize_rcu_bh() be inline Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 08/23] rcu: rename rcutiny rcu_ctrlblk to rcu_sched_ctrlblk Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 09/23] rcu: refactor RCU's context-switch handling Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 10/23] rcu: slim down rcutiny by removing rcu_scheduler_active and friends Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 11/23] rcu: enable CPU_STALL_VERBOSE by default Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 12/23] rcu: disable CPU stall warnings upon panic Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 13/23] rcu: print boot-time console messages if RCU configs out of ordinary Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 14/23] rcu: improve RCU CPU stall-warning messages Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 15/23] rcu: permit discontiguous cpu_possible_mask CPU numbering Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 16/23] rcu: v2: reduce the number of spurious RCU_SOFTIRQ invocations Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 17/23] rcu: improve the RCU CPU-stall warning documentation Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 18/23] Debugobjects transition check Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 19/23] rcu head introduce rcu head init on stack Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 20/23] remove all rcu head initializations, except on_stack initializations Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 21/23] rcu head remove init Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 22/23] tree/tiny rcu: Add debug RCU head objects (v5) Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 23/23] rcu: make SRCU usable in modules Paul E. McKenney
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