From: Zhao Hongjiang <zhaohongji...@huawei.com>
wake_up should do nothing on the nort, so we should use wakeup_timer_waiters,
also fix a spell mistake.
Cc: stable...@vger.kernel.org
Signed-off-by: Zhao Hongjiang <zhaohongji...@huawei.com>
[bigeasy: s/CONFIG_PREEMPT_RT_BASE/CONFIG_PREEMPT_RT_FULL/]
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
kernel/timer.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/timer.c b/kernel/timer.c
index 027ce4e..61b57c1 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -76,7 +76,9 @@ 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;
@@ -1006,7 +1008,7 @@ 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)
{
@@ -1251,7 +1253,7 @@ static inline void __run_timers(struct tvec_base *base)
spin_lock_irq(&base->lock);
}
}
- wake_up(&base->wait_for_running_timer);
+ wakeup_timer_waiters(base);
spin_unlock_irq(&base->lock);
}
@@ -1765,7 +1767,9 @@ static int __cpuinit init_timers_cpu(int cpu)
base = &boot_tvec_bases;
}
spin_lock_init(&base->lock);
+#ifdef CONFIG_PREEMPT_RT_FULL
init_waitqueue_head(&base->wait_for_running_timer);
+#endif
tvec_base_done[cpu] = 1;
} else {
base = per_cpu(tvec_bases, cpu);
--
1.7.10.4
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