[ANNOUNCE] 4.6.4-rt7

From: Sebastian Andrzej Siewior
Date: Thu Jul 14 2016 - 13:15:49 EST

Dear RT folks!

I'm pleased to announce the v4.6.4-rt7 patch set.

Changes since v4.6.4-rt6:

- Wake up all waiters of del_timer_sync(). Usually there should not
be more than just one waiter (per timer base) but it possible to
gain more.

- Wake up the waiters of del_timer_sync() after dropping the base lock.

Known issues
- CPU hotplug got a little better but can deadlock.

The delta patch against 4.6.4-rt6 is appended below and can be found here:


You can get this release via the git tree at:

git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.6.4-rt7

The RT patch against 4.6.2 can be found here:


The split quilt queue is available at:



diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 5f9d3599ef0a..716ef84a5d87 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1051,7 +1051,7 @@ static void wait_for_running_timer(struct timer_list *timer)
base->running_timer != timer);

-# define wakeup_timer_waiters(b) wake_up(&(b)->wait_for_running_timer)
+# define wakeup_timer_waiters(b) wake_up_all(&(b)->wait_for_running_timer)
static inline void wait_for_running_timer(struct timer_list *timer)
@@ -1313,8 +1313,8 @@ static inline void __run_timers(struct tvec_base *base)
- wakeup_timer_waiters(base);
+ wakeup_timer_waiters(base);

diff --git a/localversion-rt b/localversion-rt
index 8fc605d80667..045478966e9f 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@