[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <ZQLKYCmOT/HnAYL1@shell.armlinux.org.uk>
Date: Thu, 14 Sep 2023 09:54:56 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: James Morse <james.morse@....com>
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, Salil Mehta <salil.mehta@...wei.com>,
Jean-Philippe Brucker <jean-philippe@...aro.org>,
jianyong.wu@....com, justin.he@....com
Subject: Re: [RFC PATCH v2 01/35] ACPI: Move ACPI_HOTPLUG_CPU to be disabled
on arm64 and riscv
On Wed, Sep 13, 2023 at 04:37:49PM +0000, James Morse wrote:
> diff --git a/arch/loongarch/include/asm/cpu.h b/arch/loongarch/include/asm/cpu.h
> index 48b9f7168bcc..7afe8cbb844e 100644
> --- a/arch/loongarch/include/asm/cpu.h
> +++ b/arch/loongarch/include/asm/cpu.h
> @@ -128,4 +128,11 @@ enum cpu_type_enum {
> #define LOONGARCH_CPU_HYPERVISOR BIT_ULL(CPU_FEATURE_HYPERVISOR)
> #define LOONGARCH_CPU_PTW BIT_ULL(CPU_FEATURE_PTW)
>
> +#if !defined(__ASSEMBLY__)
> +#ifdef CONFIG_HOTPLUG_CPU
> +int arch_register_cpu(int num);
> +void arch_unregister_cpu(int cpu);
> +#endif
> +#endif /* ! __ASSEMBLY__ */
So, for loongarch:
grep arch_.*register_cpu arch/loongarch/ -r
arch/loongarch/kernel/topology.c:int arch_register_cpu(int cpu)
arch/loongarch/kernel/topology.c:EXPORT_SYMBOL(arch_register_cpu);
arch/loongarch/kernel/topology.c:void arch_unregister_cpu(int cpu)
arch/loongarch/kernel/topology.c:EXPORT_SYMBOL(arch_unregister_cpu);
So really this is a fix (since these functions should have prototypes)
and thus should probably be a separate patch.
However, I also wonder whether these prototypes should be added to
linux/cpu.h and be done with it (rather than have every arch prototype
these - it's not like the prototype can be different from this because
of the generic code.
I know in subsequent patches you do that, but it's rather piecemeal,
and I think this is a change that could be submitted now as both a
fix and clean up.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
Powered by blists - more mailing lists