Hi,
On Fri, 9 May 2014 20:12:14 +0200
Sebastian Andrzej Siewior <bige...@linutronix.de> wrote:
> Dear RT folks!
>
> I'm pleased to announce the v3.14.3-rt5 patch set.
>
> Changes since v3.14.3-rt4
> - remove one of the two identical rt_mutex_init() definitions. A patch
> from Steven Rostedt
> - use EXPORT_SYMBOL() on __rt_mutex_init() and
> rt_down_write_nested_lock(). The former was dropped accidently and is
> needed by some binary only modules, the latter was requsted by the f2fs
> module. Patch by Joakim Hernberg.
> - during v3.14 porting I accidently dropped preempt_check_resched() in
> the non-preempt case which means configs non-preempt configs did not
> build. Reported by Yang Honggang.
> - NETCONSOLE is no longer disabled on RT. Daniel Bristot de Oliveira did
> some testing and did not find anything wrong it. That means it can be
> enabled if someone needs/wants it.
> - rt_read_lock() uses rwlock_acquire() instead of rwlock_acquire_read()
> for lockdep annotation. It was different compared to what the trylock
> variant used and on RT both act the same way. Patch by Mike Galbraith.
> - the tracing code wrongly disable preemption while shrinking the ring
> buffer. Reported by Stanislav Meduna.
>
> Known issues:
>
> - bcache is disabled.
>
> - lazy preempt on x86_64 leads to a crash with some load.
>
> - CPU hotplug works in general. Steven's test script however
> deadlocks usually on the second invocation.
>
Also SCHED_DEADLINE dies without the following.
Thanks,
- Juri
---From 3ca5943538c728399037823e5632431bc2da707c Mon Sep 17 00:00:00 2001
From: Juri Lelli <juri.le...@gmail.com>
Date: Tue, 13 May 2014 15:21:16 +0200
Subject: [PATCH] sched/deadline: dl_task_timer has to be irqsafe
As for rt_period_timer, dl_task_timer has to be irqsafe.
Signed-off-by: Juri Lelli <juri.le...@gmail.com>
---
kernel/sched/deadline.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 6e79b3f..48b04ce 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -537,6 +537,7 @@ void init_dl_task_timer(struct sched_dl_entity *dl_se)
hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
timer->function = dl_task_timer;
+ timer->irqsafe = 1;
}
static
--
1.7.10.4
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