Received-SPF: pass (google.com: domain of linux-kernel+bounces-71741-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1;
Date: Mon, 19 Feb 2024 17:16:04 -0000
From: "tip-bot2 for Alexey Dobriyan" <tip-bot2@linutronix.de>
Sender: tip-bot2@linutronix.de
Reply-to: linux-kernel@vger.kernel.org
To: linux-tip-commits@vger.kernel.org
Subject: [tip: smp/core] cpu: Mark cpu_possible_mask as __ro_after_init
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
 Thomas Gleixner <tglx@linutronix.de>, x86@kernel.org,
 linux-kernel@vger.kernel.org
In-Reply-To: <41cd78af-92a3-4f23-8c7a-4316a04a66d8@p183>
References: <41cd78af-92a3-4f23-8c7a-4316a04a66d8@p183>
Precedence: bulk
MIME-Version: 1.0
Message-ID: <170836296444.398.15393665833810225842.tip-bot2@tip-bot2>
Robot-ID: <tip-bot2@linutronix.de>
Robot-Unsubscribe:
 Contact <mailto:tglx@linutronix.de> to get blacklisted from these emails
Precedence: bulk
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

The following commit has been merged into the smp/core branch of tip:

Commit-ID:     da92df490eeab7a97a3390ff32e0ae091e0dc2eb
Gitweb:        https://git.kernel.org/tip/da92df490eeab7a97a3390ff32e0ae091e0dc2eb
Author:        Alexey Dobriyan <adobriyan@gmail.com>
AuthorDate:    Mon, 05 Feb 2024 13:01:19 +03:00
Committer:     Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Mon, 19 Feb 2024 18:05:47 +01:00

cpu: Mark cpu_possible_mask as __ro_after_init

cpu_possible_mask is by definition "cpus which could be hotplugged without
reboot". It's a property which is fixed after kernel enumerates the
hardware configuration.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/41cd78af-92a3-4f23-8c7a-4316a04a66d8@p183

---
 kernel/cpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index ad7d0b0..7b36b3a 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -3106,10 +3106,10 @@ const DECLARE_BITMAP(cpu_all_bits, NR_CPUS) = CPU_BITS_ALL;
 EXPORT_SYMBOL(cpu_all_bits);
 
 #ifdef CONFIG_INIT_ALL_POSSIBLE
-struct cpumask __cpu_possible_mask __read_mostly
+struct cpumask __cpu_possible_mask __ro_after_init;
 	= {CPU_BITS_ALL};
 #else
-struct cpumask __cpu_possible_mask __read_mostly;
+struct cpumask __cpu_possible_mask __ro_after_init;
 #endif
 EXPORT_SYMBOL(__cpu_possible_mask);