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[PATCH RT 00/10] Linux 4.4.21-rt31-rc1

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  [PATCH RT 00/10] Linux 4.4.21-rt31-rc1 Steven Rostedt <rostedt@goodmis.org> - 2016-09-23 00:00 +0200
    [PATCH RT 02/10] timers: wakeup all timer waiters without holding the base lock Steven Rostedt <rostedt@goodmis.org> - 2016-09-23 00:00 +0200
    [PATCH RT 03/10] sched: lazy_preempt: avoid a warning in the !RT case Steven Rostedt <rostedt@goodmis.org> - 2016-09-23 00:00 +0200

#1489594 — [PATCH RT 00/10] Linux 4.4.21-rt31-rc1

Dear RT Folks,

This is the RT stable review cycle of patch 4.4.21-rt31-rc1.

Please scream at me if I messed something up. Please test the patches too.

The -rc release will be uploaded to kernel.org and will be deleted when
the final release is out. This is just a review release (or release candidate).

The pre-releases will not be pushed to the git repository, only the
final release is.

If all goes well, this patch will be converted to the next main release
on 9/25/2016.

Enjoy,

-- Steve


To build 4.4.21-rt31-rc1 directly, the following patches should be applied:

  http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.4.tar.xz

  http://www.kernel.org/pub/linux/kernel/v4.x/patch-4.4.21.xz

  http://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patch-4.4.21-rt31-rc1.patch.xz

You can also build from 4.4.21-rt30 by applying the incremental patch:

http://www.kernel.org/pub/linux/kernel/projects/rt/4.4/incr/patch-4.4.21-rt30-rt31-rc1.patch.xz


Changes from 4.4.21-rt30:

---


Mike Galbraith (1):
      scsi/fcoe: Fix get_cpu()/put_cpu_light() imbalance in fcoe_recv_frame()

Sebastian Andrzej Siewior (8):
      timers: wakeup all timer waiters
      timers: wakeup all timer waiters without holding the base lock
      sched: lazy_preempt: avoid a warning in the !RT case
      net: add back the missing serialization in ip_send_unicast_reply()
      net: add a lock around icmp_sk()
      fs/dcache: resched/chill only if we make no progress
      x86/preempt-lazy: fixup should_resched()
      fs/dcache: incremental fixup of the retry routine

Steven Rostedt (Red Hat) (1):
      Linux 4.4.21-rt31-rc1

----
 arch/x86/include/asm/preempt.h | 17 +++++++++++++++--
 drivers/scsi/fcoe/fcoe.c       |  2 +-
 fs/dcache.c                    | 18 ++++++++++++------
 kernel/sched/core.c            |  2 +-
 kernel/time/timer.c            |  4 ++--
 localversion-rt                |  2 +-
 net/ipv4/icmp.c                |  8 ++++++++
 net/ipv4/tcp_ipv4.c            |  7 +++++++
 8 files changed, 47 insertions(+), 13 deletions(-)

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#1489595 — [PATCH RT 02/10] timers: wakeup all timer waiters without holding the base lock

4.4.21-rt31-rc1 stable review patch.
If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

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@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 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 d5212147ae19..603699ff9411 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

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#1489599 — [PATCH RT 03/10] sched: lazy_preempt: avoid a warning in the !RT case

4.4.21-rt31-rc1 stable review patch.
If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 5ec35352b06b..8bad7e2d363c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3474,7 +3474,7 @@ static __always_inline int preemptible_lazy(void)
 
 #else
 
-static int preemptible_lazy(void)
+static inline int preemptible_lazy(void)
 {
 	return 1;
 }
-- 
2.8.1

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