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From:   John Ogness <john.ogness@linutronix.de>
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To:     Petr Mladek <pmladek@suse.com>
Cc:     Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Mike Galbraith <efault@gmx.de>,
        RT <linux-rt-users@vger.kernel.org>
Subject: Re: v5.19-rc2-rt3: nouveau might sleep splat
In-Reply-To: <YuqeB6Z0ZYNb2TxC@alley>
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Date:   Fri, 05 Aug 2022 16:29:11 +0206
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On 2022-08-03, Petr Mladek <pmladek@suse.com> wrote:
>> I am preparing a new series that addresses this by completely removing
>> interrupt disabling from the printk() path. This required changes to the
>> printk_enter() macro, recursion handling, and the printk-ringbuffer
>> itself.
>
> I am not going to accept any removal of disabled interrupts in
> the first round. It opens another can of worms.

To be clear, my new series only removes interrupt disabling for RT. It
uses spin_lock_irqsave() and lock_lock_irqsave() to accomplish this so
that interrupts are still disabled for all !RT preemption models.

John