Messages in this thread Patch in this message | | | Date | Mon, 5 Feb 2024 13:01:19 +0300 | From | Alexey Dobriyan <> | Subject | [PATCH] 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" -- property which is fixed after kernel enumerates motheboard capabilities and hardware configuration.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> ---
kernel/cpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -3107,10 +3107,10 @@ 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);
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