linux-kernel - Re: [PATCH] pstore: Revert pmsg

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Message-ID: <20230308154111.483a686f@gandalf.local.home>
Date:   Wed, 8 Mar 2023 15:41:11 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     John Stultz <jstultz@...gle.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, Wei Wang <wvw@...gle.com>,
        Midas Chien <midaschieh@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Anton Vorontsov <anton@...msg.org>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>,
        Tony Luck <tony.luck@...el.com>, kernel-team@...roid.com,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: Re: [PATCH] pstore: Revert pmsg_lock back to a normal mutex

On Wed, 8 Mar 2023 12:04:23 -0800
John Stultz <jstultz@...gle.com> wrote:

> I'm interested in continuing to see if we can further tweak it, but
> I've got some other work I need to focus on, so I think I'm going to
> advocate for the revert in the short-term and look at finer grained
> locking (along with rtmutex to address the priority inversion issue)
> in the longer term.

Yeah, I would suggest the same. I would still like to see what the
difference is. Because I believe this will also be an issue for PREEMPT_RT.

-- Steve