linux-kernel - Re: [PATCH v2 1/4] srcu: Move rcu_is_watching() checks to srcu_read_{,un}lock

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Message-ID: <5c0894b9-9297-4729-b7d5-dea8997e1724@paulmck-laptop>
Date: Mon, 21 Jul 2025 09:25:47 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: rcu@...r.kernel.org, linux-kernel@...r.kernel.org, kernel-team@...a.com,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: Re: [PATCH v2 1/4] srcu: Move rcu_is_watching() checks to
 srcu_read_{,un}lock_fast()

On Mon, Jul 21, 2025 at 10:53:48AM -0400, Steven Rostedt wrote:
> On Fri, 18 Jul 2025 17:28:14 -0700
> "Paul E. McKenney" <paulmck@...nel.org> wrote:
> 
> > The rcu_is_watching() warnings are currently in the SRCU-tree
> > implementations of __srcu_read_lock_fast() and __srcu_read_unlock_fast().
> > However, this makes it difficult to create _notrace variants of
> > srcu_read_lock_fast() and srcu_read_unlock_fast().  This commit therefore
> > moves these checks to srcu_read_lock_fast(), srcu_read_unlock_fast(),
> > srcu_down_read_fast(), and srcu_up_read_fast().
> > 
> 
> Paul,
> 
> Can you please send new versions of a patch set as a separate thread?
> It is really difficult to sort out what patch goes with what when they
> are all in the same thread. Even in tree view.

Here you go!

https://lore.kernel.org/all/7387f0c2-75bc-420d-aa7e-3a9ac72d369c@paulmck-laptop/

(Once lore picks it up, anyway.)

							Thanx, Paul