Re: [PATCH 07/21] drivers: base: Allow parts of GENERIC_CPU_DEVICES to be overridden

[Jonathan Cameron]

On Tue, 21 Nov 2023 13:44:25 +0000
Russell King <rmk+kernel@xxxxxxxxxxxxxxx> wrote:

> From: James Morse <james.morse@xxxxxxx>
> 
> Architectures often have extra per-cpu work that needs doing
> before a CPU is registered, often to determine if a CPU is
> hotpluggable.
> 
> To allow the ACPI architectures to use GENERIC_CPU_DEVICES, move
> the cpu_register() call into arch_register_cpu(), which is made __weak
> so architectures with extra work can override it.
> This aligns with the way x86, ia64 and loongarch register hotplug CPUs
> when they become present.
> 
> Signed-off-by: James Morse <james.morse@xxxxxxx>
> Reviewed-by: Shaoqin Huang <shahuang@xxxxxxxxxx>
> Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>
> Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>