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Message-ID: <20220910222300.641069948@linutronix.de>
From:   Thomas Gleixner <tglx@linutronix.de>
To:     LKML <linux-kernel@vger.kernel.org>
Cc:     John Ogness <john.ogness@linutronix.de>,
        Petr Mladek <pmladek@suse.com>,
        Sergey Senozhatsky <senozhatsky@chromium.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Linus Torvalds <torvalds@linuxfoundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Helge Deller <deller@gmx.de>,
        Jason Wessel <jason.wessel@windriver.com>,
        Daniel Thompson <daniel.thompson@linaro.org>
Subject: [patch RFC 05/29] printk: Mark __printk percpu data ready __ro_after_init
References: <20220910221947.171557773@linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Date:   Sun, 11 Sep 2022 00:27:39 +0200 (CEST)
Precedence: bulk

This variable cannot change post boot.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/printk/printk.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -430,7 +430,7 @@ static struct printk_ringbuffer *prb = &
  * per_cpu_areas are initialised. This variable is set to true when
  * it's safe to access per-CPU data.
  */
-static bool __printk_percpu_data_ready __read_mostly;
+static bool __printk_percpu_data_ready __ro_after_init;
 
 bool printk_percpu_data_ready(void)
 {