[RT PATCH 2/2] timers: wakeup all timer waiters without holding the base lock

[Sebastian Andrzej Siewior]

There should be no need to hold the base lock during the wakeup. There
should be no boosting involved, the wakeup list has its own lock so it
should be safe to do this without the lock.

Cc: stable-rt@xxxxxxxxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
 kernel/time/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index b3c3d3a6216f..716ef84a5d87 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1313,8 +1313,8 @@ static inline void __run_timers(struct tvec_base *base)
 			}
 		}
 	}
-	wakeup_timer_waiters(base);
 	spin_unlock_irq(&base->lock);
+	wakeup_timer_waiters(base);
 }
 
 #ifdef CONFIG_NO_HZ_COMMON
-- 
2.8.1