linux-kernel - Re: usage of DEFINE_WAIT_OVERRIDE_MAP(LD_WAIT

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Message-ID: <20251024151956.GH771@redhat.com>
Date: Fri, 24 Oct 2025 17:19:57 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: "Luis Claudio R. Goncalves" <lgoncalv@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Clark Williams <clrkwllms@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>, Tejun Heo <tj@...nel.org>,
	David Vernet <dvernet@...a.com>, Barret Rhoden <brho@...gle.com>,
	Josh Don <joshdon@...gle.com>, Crystal Wood <crwood@...hat.com>,
	linux-kernel@...r.kernel.org, linux-rt-devel@...ts.linux.dev,
	Juri Lelli <juri.lelli@...hat.com>, Ben Segall <bsegall@...gle.com>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Ingo Molnar <mingo@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Wander Lairson Costa <wander@...hat.com>
Subject: Re: usage of DEFINE_WAIT_OVERRIDE_MAP(LD_WAIT_SLEEP)

On 10/24, Sebastian Andrzej Siewior wrote:
>
> On 2025-10-24 12:26:16 [+0200], Oleg Nesterov wrote:
> > > | /* PREEMPT_RT kernels map spinlock to rt_mutex */
> >
> > Ah, indeed, I was confused and didn't even bother to read the definitions
> > below, spinlock->dep_map is initialized by the same SPIN_DEP_MAP_INIT()...
> >
> > Sebastian, thanks for correcting me! Sorry, I could not carefully read
> > your emails yesterday.
>
> No worries. Just let me know if the cited comment requires an update.

No, no, I think the comment is fine. Just the ignorance on my side.

Oleg.