linux-kernel - Re: [PATCH RT 0/3] riscv: add PREEMPT

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Message-ID: <20231031153427.goCGGJRm@linutronix.de>
Date:   Tue, 31 Oct 2023 16:34:27 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Jisheng Zhang <jszhang@...nel.org>
Cc:     "Schaffner, Tobias" <tobias.schaffner@...mens.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        "minda.chen@...rfivetech.com" <minda.chen@...rfivetech.com>
Subject: Re: [PATCH RT 0/3] riscv: add PREEMPT_RT support

On 2023-10-31 22:43:52 [+0800], Jisheng Zhang wrote:
> Hi Sebastian,
Hi Jisheng,

> Thank you so much for pointing out PREEMPT_AUTO, I read the discussions
> last weekend, glad to know PREEMPT_AUTO. And riscv has switched to
> generic entry, so it's easy to support PREEMPT_AUTO for riscv. V2 was
> sent out a few mintues ago. Could you please review?

Sure. I have no idea what the upstream status about PREEMPT_AUTO but I
think we want this.

> > Are there any reports of this booting without warnings with LOCKDEP and
> > CONFIG_DEBUG_ATOMIC_SLEEP enabled? I remember there was something
> > earlier.
> 
> IIRC, Conor reported the warning and stack trace is ext4 related. But
> I didn't reproduce the warning. And Schaffner also tried the series
> but it seems he didn't see the warning either. So I'm asking for Conor's
> help to retry v2.

oki.

> Thanks

Sebastian