From baca589746b2999538fb9afa13bfa3c1d8829d35 Mon Sep 17 00:00:00 2001
From: Zhao Hongjiang <zhaohongjiang@huawei.com>
Date: Wed, 17 Apr 2013 17:44:16 +0800
Subject: timers: prepare for full preemption improve

wake_up should do nothing on the nort, so we should use wakeup_timer_waiters,
also fix a spell mistake.

Cc: stable-rt@vger.kernel.org
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
[bigeasy: s/CONFIG_PREEMPT_RT_BASE/CONFIG_PREEMPT_RT_FULL/]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

diff --git a/kernel/timer.c b/kernel/timer.c
index cd92037..5f0a85b 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -78,7 +78,9 @@ struct tvec_root {
 struct tvec_base {
 	spinlock_t lock;
 	struct timer_list *running_timer;
+#ifdef CONFIG_PREEMPT_RT_FULL
 	wait_queue_head_t wait_for_running_timer;
+#endif
 	unsigned long timer_jiffies;
 	unsigned long next_timer;
 	unsigned long active_timers;
@@ -962,7 +964,7 @@ static void wait_for_running_timer(struct timer_list *timer)
 			   base->running_timer != timer);
 }
 
-# define wakeup_timer_waiters(b)	wake_up(&(b)->wait_for_tunning_timer)
+# define wakeup_timer_waiters(b)	wake_up(&(b)->wait_for_running_timer)
 #else
 static inline void wait_for_running_timer(struct timer_list *timer)
 {
@@ -1216,7 +1218,7 @@ static inline void __run_timers(struct tvec_base *base)
 			}
 		}
 	}
-	wake_up(&base->wait_for_running_timer);
+	wakeup_timer_waiters(base);
 	spin_unlock_irq(&base->lock);
 }
 
@@ -1576,7 +1578,9 @@ static int init_timers_cpu(int cpu)
 		base = per_cpu(tvec_bases, cpu);
 	}
 
+#ifdef CONFIG_PREEMPT_RT_FULL
 	init_waitqueue_head(&base->wait_for_running_timer);
+#endif
 
 	for (j = 0; j < TVN_SIZE; j++) {
 		INIT_LIST_HEAD(base->tv5.vec + j);
-- 
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