[ANNOUNCE] v4.14.12-rt10

From: Sebastian Andrzej Siewior
Date: Tue Jan 09 2018 - 07:34:41 EST


Dear RT folks!

I'm pleased to announce the v4.14.12-rt10 patch set.

Changes since v4.14.8-rt9:

- updated to v4.14.12

- An additional include to avoid a build failure on ARM after a header
disappeared somewhere during the stable update.

- The patch "nohz: Prevent erroneous tick stop invocations" was merged
differently upstream. The original issue where a slow box could lock up
with a pending timer remained. I currently assume that this is a RT only
issue and keep the patch as RT only.

Known issues
- A warning triggered in "rcu_note_context_switch" originated from
SyS_timer_gettime(). The issue was always there, it is now
visible. Reported by Grygorii Strashko and Daniel Wagner.

You can get this release via the git tree at:

git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.14.12-rt10

The RT patch against v4.14.12 can be found here:

https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patch-4.14.12-rt10.patch.xz

The split quilt queue is available at:

https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.12-rt10.tar.xz

The RT-specific delta is appended below.

Sebastian
diff --git a/include/linux/spinlock_types_raw.h b/include/linux/spinlock_types_raw.h
--- a/include/linux/spinlock_types_raw.h
+++ b/include/linux/spinlock_types_raw.h
@@ -1,6 +1,8 @@
#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
#define __LINUX_SPINLOCK_TYPES_RAW_H

+#include <linux/types.h>
+
#if defined(CONFIG_SMP)
# include <asm/spinlock_types.h>
#else
diff --git a/kernel/softirq.c b/kernel/softirq.c
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -838,8 +838,13 @@ static inline void tick_irq_exit(void)
int cpu = smp_processor_id();

/* Make sure that timer wheel updates are propagated */
+#ifdef CONFIG_PREEMPT_RT_BASE
if ((idle_cpu(cpu) || tick_nohz_full_cpu(cpu)) &&
- !need_resched() && !local_softirq_pending()) {
+ !need_resched() && !local_softirq_pending())
+#else
+ if ((idle_cpu(cpu) && !need_resched()) || tick_nohz_full_cpu(cpu))
+#endif
+ {
if (!in_interrupt())
tick_nohz_irq_exit();
}
diff --git a/localversion-rt b/localversion-rt
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt9
+-rt10