linux-kernel - Re: [PATCH] x86/microcode: move @microcode

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Message-ID: <ZK60GMfVv4UXsejE@thinkpad2021>
Date:   Wed, 12 Jul 2023 10:09:28 -0400
From:   "John B. Wyatt IV" <jwyatt@...hat.com>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
        Juri Lelli <jlelli@...hat.com>
Subject: Re: [PATCH] x86/microcode: move @microcode_mutex definition near
 usage

Hi John,

I am a new real-time kernel developer. I am still encountering this with
the linux-rt-devel repo and need to apply the patch manually to build.

On Fri, Mar 24, 2023 at 02:17:10PM +0106, John Ogness wrote:
> Digging deeper I see that initializing @wait_list in
> __MUTEX_INITIALIZER() is what is allowing unused global mutexes to go
> unnoticed. Since with CONFIG_PREEMPT_RT the mutex is different and
> initialized differently, it is (correctly) detected as unused.

As far as I can tell @wait_list has been removed from both torvalds and
linux-rt-devel's tree (it is still in the comments).

What would be the next step in getting this resolved?

John B. Wyatt IV