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From: "Ahmed S. Darwish" <a.darwish@linutronix.de>
To: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Thomas Gleixner <tglx@linutronix.de>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-rt-users <linux-rt-users@vger.kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [ANNOUNCE] v5.11-rc4-rt1
Date: Fri, 22 Jan 2021 06:32:42 +0100
Message-ID: <YApjeinzJWKYNbYb@lx-t490> (raw)
In-Reply-To: <20210121205008.GA7149@duo.ucw.cz>

On Thu, Jan 21, 2021 at 09:50:08PM +0100, Pavel Machek wrote:
> Hi!
>
> > I'm pleased to announce the v5.11-rc4-rt1 patch set.
> >
> > Changes since v5.10.8-rt24:
> >
> >   - Updated to v5.11-rc4
> >
> > Known issues
> >      - kdb/kgdb can easily deadlock.
> >      - kmsg dumpers expecting not to be called in parallel can clobber
> >        their temp buffer.
> >      - netconsole triggers WARN.
>
> I noticed... lot of code using in_interrupt() to decide what to do is
> making it to 5.10-stable at the moment (and I guess that means
> vanilla, too).
>
> I have recollection that that is not okay thing to do. Am I right?
>

Correct. These macros should not be added to new, non-core, kernel code.

There's an on-going effort to clear them already, as in:

  - https://lkml.kernel.org/r/20201019100629.419020859@linutronix.de		(merged)
  - https://lkml.kernel.org/r/20201126132952.2287996-1-bigeasy@linutronix.de	(merged)
  - https://lkml.kernel.org/r/20210118100955.1761652-1-a.darwish@linutronix.de	(to be merged)

> Examples: 8abec36d1274bbd5ae8f36f3658b9abb3db56c31,
> d68b29584c25dbacd01ed44a3e45abb35353f1de.
>

That's sad.

Maybe it would be wise to let a bot scan lore regularly, and send an
automatic notification to authors whenever their patches reintroduce
these macros to non-core kernel code.

Thanks,

--
Ahmed S. Darwish

      reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-21 13:45 Sebastian Andrzej Siewior
2021-01-21 20:50 ` Pavel Machek
2021-01-22  5:32   ` Ahmed S. Darwish [this message]

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