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cpu: Mark cpu_possible_mask as __ro_after_init

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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
This commit is contained in:
Alexey Dobriyan 2024-02-05 13:01:19 +03:00 • committed by Thomas Gleixner
parent effe6d278e
commit da92df490e
1 changed files with 2 additions and 2 deletions
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4
kernel/cpu.c
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@ -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);