linux-kernel - Re: [PATCH 03/21] x86/topology: remove arch_*register

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Message-ID: <20231130164819.00002f75@Huawei.com>
Date:   Thu, 30 Nov 2023 16:48:19 +0000
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
CC:     <linux-pm@...r.kernel.org>, <loongarch@...ts.linux.dev>,
        <linux-acpi@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-riscv@...ts.infradead.org>, <kvmarm@...ts.linux.dev>,
        <x86@...nel.org>, <linux-csky@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <linux-ia64@...r.kernel.org>,
        <linux-parisc@...r.kernel.org>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        <jianyong.wu@....com>, <justin.he@....com>,
        James Morse <james.morse@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 03/21] x86/topology: remove arch_*register_cpu() exports

On Tue, 21 Nov 2023 13:44:05 +0000
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk> wrote:

> arch_register_cpu() and arch_unregister_cpu() are not used by anything
> that can be a module - they are used by drivers/base/cpu.c and
> drivers/acpi/acpi_processor.c, neither of which can be a module.
> 
> Remove the exports.
> 
> Reviewed-by: Gavin Shan <gshan@...hat.com>
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
I somehow ended up replying to the RFC even though you'd posted this.
On basis this might get picked up directly from this posting.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
>  arch/x86/kernel/topology.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c
> index 0bab03130033..fcb62cfdf946 100644
> --- a/arch/x86/kernel/topology.c
> +++ b/arch/x86/kernel/topology.c
> @@ -45,13 +45,11 @@ int arch_register_cpu(int cpu)
>  	xc->cpu.hotpluggable = cpu > 0;
>  	return register_cpu(&xc->cpu, cpu);
>  }
> -EXPORT_SYMBOL(arch_register_cpu);
>  
>  void arch_unregister_cpu(int num)
>  {
>  	unregister_cpu(&per_cpu(cpu_devices, num).cpu);
>  }
> -EXPORT_SYMBOL(arch_unregister_cpu);
>  #else /* CONFIG_HOTPLUG_CPU */
>  
>  int __init arch_register_cpu(int num)