linux-kernel - Re: [PATCH rcu 27/27] rcu: Remove CONFIG

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Message-ID: <87r0w9csqn.fsf@jogness.linutronix.de>
Date:   Thu, 05 Jan 2023 09:10:16 +0106
From:   John Ogness <john.ogness@...utronix.de>
To:     "Paul E. McKenney" <paulmck@...nel.org>, rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...a.com,
        rostedt@...dmis.org, "Paul E. McKenney" <paulmck@...nel.org>,
        Petr Mladek <pmladek@...e.com>
Subject: Re: [PATCH rcu 27/27] rcu: Remove CONFIG_SRCU

On 2023-01-04, "Paul E. McKenney" <paulmck@...nel.org> wrote:
> Now that all references to CONFIG_SRCU have been removed, it is time to
> remove CONFIG_SRCU itself.

I think "all references" is a bit misleading since there still are
several places in the kernel code that use it:

$ git grep CONFIG_SRCU
drivers/base/core.c:#ifdef CONFIG_SRCU
drivers/base/core.c:#else /* !CONFIG_SRCU */
drivers/base/core.c:#endif /* !CONFIG_SRCU */
fs/locks.c:#if IS_ENABLED(CONFIG_SRCU)
fs/locks.c:#else /* !IS_ENABLED(CONFIG_SRCU) */
fs/locks.c:#endif /* IS_ENABLED(CONFIG_SRCU) */
kernel/notifier.c:#ifdef CONFIG_SRCU
kernel/notifier.c:#endif /* CONFIG_SRCU */

Should those be removed before this patch?

John Ogness