linux-kernel - Re: [ANNOUNCE] v5.0.19-rt11

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Message-ID: <20190531193124.ao2skirq6rkdrgyn@linutronix.de>
Date:   Fri, 31 May 2019 21:31:25 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v5.0.19-rt11

On 2019-05-29 23:26:38 [+0200], To Thomas Gleixner wrote:
> Dear RT folks!
> 
> I'm pleased to announce the v5.0.19-rt11 patch set. 
> 
> Changes since v5.0.19-rt10:
> 
>   - Ignore a warning from lockdep when lockdep is disabled for different
>     lock types.
> 
>   - Make the cpuidle an imx6 raw_spinlock_t.
> 
>   - Add a proper depends in Kconfig for Atmel's tclib based clocksource.
>     Otherwise the allmodconfig on !ATMEL fails.
> 
>   - Revert the removal of TIMER_IRQSAFE in i915 because it is required.
> 
>   - Rework the softirq code.
>     The basic idea is to have local-lock within local_bh_disable() which is
>     used for synchronisation similar to mainline. With this synchronisation
>     we can't have two softirqs processed in parallel on the same CPU. This
>     allows to remove the extra synchronisation we had.
> 
>   - Rework the workqueue code.
>     The worker_pool.lock is made to raw_spinlock_t. With this change we can
>     schedule workitems from preempt-disable sections and sections with
>     disabled interrupts. This change allows to remove all kthread_.*
>     workarounds we used to have.
> 
> 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.
> 
>      - rcutorture is currently broken on -RT. Reported by Juri Lelli.
> 
> The delta patch against v5.0.19-rt10 is appended below and can be found here:
>  
>      https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.0/incr/patch-5.0.19-rt10-rt11.patch.xz
> 
> You can get this release via the git tree at:
> 
>     git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v5.0.19-rt11
> 
> The RT patch against v5.0.19 can be found here:
> 
>     https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.0/older/patch-5.0.19-rt11.patch.xz
> 
> The split quilt queue is available at:
> 
>     https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.0/older/patches-5.0.19-rt11.tar.xz

just noticed that this never made it to the due to large inline diff.
The diff can be looked up at

      https://git.kernel.org/rt/linux-rt-devel/d/v5.0.19-rt11/v5.0.19-rt10
 
Sebastian