| Date | Thu, 9 Nov 2023 18:51:44 +0800 | Subject | Re: [PATCH RFC 08/22] drivers: base: Implement weak arch_unregister_cpu() | From | Shaoqin Huang <> |
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On 11/7/23 18:29, Russell King (Oracle) wrote: > From: James Morse <james.morse@arm.com> > > Add arch_unregister_cpu() to allow the ACPI machinery to call > unregister_cpu(). This is enough for arm64, riscv and loongarch, but > needs to be overridden by x86 and ia64 who need to do more work. > > CC: Jean-Philippe Brucker <jean-philippe@linaro.org> > Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> > --- > Changes since v1: > * Added CONFIG_HOTPLUG_CPU ifdeffery around unregister_cpu > Changes since RFC v2: > * Move earlier in the series > --- > drivers/base/cpu.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c > index 579064fda97b..58bb86091b34 100644 > --- a/drivers/base/cpu.c > +++ b/drivers/base/cpu.c > @@ -531,7 +531,14 @@ int __weak arch_register_cpu(int cpu) > { > return register_cpu(&per_cpu(cpu_devices, cpu), cpu); > } > -#endif > + > +#ifdef CONFIG_HOTPLUG_CPU > +void __weak arch_unregister_cpu(int num) > +{ > + unregister_cpu(&per_cpu(cpu_devices, num)); > +} > +#endif /* CONFIG_HOTPLUG_CPU */ > +#endif /* CONFIG_GENERIC_CPU_DEVICES */ > > static void __init cpu_dev_register_generic(void) > {
-- Shaoqin
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