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Date: Tue, 8 Jul 2014 19:01:07 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>,
linux-rt-users <linux-rt-users@...r.kernel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Carsten Emde <C.Emde@...dl.org>,
John Kacur <jkacur@...hat.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [ANNOUNCE] 3.10.44-rt46
Dear RT Folks,
I'm pleased to announce the 3.10.44-rt46 stable release.
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
branch: v3.10-rt
Head SHA1: 6cdb407a1ef32c5f757af68ea294505c6dd1ed4c
Or to build 3.10.44-rt46 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.10.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.10.44.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patch-3.10.44-rt46.patch.xz
You can also build from 3.10.44-rt45 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.10/incr/patch-3.10.44-rt45-rt46.patch.xz
Enjoy,
-- Steve
Changes from v3.10.44-rt45:
---
Ben Hutchings (1):
Fix latency histogram after "hrtimer: Set expiry time before switch_hrtimer_base()"
Sebastian Andrzej Siewior (1):
timer: do not spin_trylock() on UP
Steven Rostedt (Red Hat) (1):
Linux 3.10.44-rt46
----
kernel/hrtimer.c | 10 +++++-----
kernel/timer.c | 13 +++++++++++++
localversion-rt | 2 +-
3 files changed, 19 insertions(+), 6 deletions(-)
---------------------------
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index f7a3a7a5a61b..1defbda1def8 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1102,6 +1102,11 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
#endif
}
+ hrtimer_set_expires_range_ns(timer, tim, delta_ns);
+
+ /* Switch the timer base, if necessary: */
+ new_base = switch_hrtimer_base(timer, base, mode & HRTIMER_MODE_PINNED);
+
#ifdef CONFIG_MISSED_TIMER_OFFSETS_HIST
{
ktime_t now = new_base->get_time();
@@ -1113,11 +1118,6 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
}
#endif
- hrtimer_set_expires_range_ns(timer, tim, delta_ns);
-
- /* Switch the timer base, if necessary: */
- new_base = switch_hrtimer_base(timer, base, mode & HRTIMER_MODE_PINNED);
-
timer_stats_hrtimer_set_start_info(timer);
leftmost = enqueue_hrtimer(timer, new_base);
diff --git a/kernel/timer.c b/kernel/timer.c
index 26cca8b924e7..40cfa14131ca 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1461,6 +1461,19 @@ void run_local_timers(void)
* the timer softirq.
*/
#ifdef CONFIG_PREEMPT_RT_FULL
+
+#ifndef CONFIG_SMP
+ /*
+ * The spin_do_trylock() later may fail as the lock may be hold before
+ * the interrupt arrived. The spin-lock debugging code will raise a
+ * warning if the try_lock fails on UP. Since this is only an
+ * optimization for the FULL_NO_HZ case (not to run the timer softirq on
+ * an nohz_full CPU) we don't really care and shedule the softirq.
+ */
+ raise_softirq(TIMER_SOFTIRQ);
+ return;
+#endif
+
/* On RT, irq work runs from softirq */
if (irq_work_needs_cpu()) {
raise_softirq(TIMER_SOFTIRQ);
diff --git a/localversion-rt b/localversion-rt
index 38c40b21a885..272158183778 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt45
+-rt46
--
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