Re: [PATCH RFC 07/22] drivers: base: Allow parts of GENERIC_CPU_DEVICES to be overridden

Jonathan Cameron <[email protected]> Tue, 28 Nov 2023 14:49:21 +0000
Newsgroups gmane.linux.kernel,gmane.linux.power-management.general,gmane.linux.acpi.devel,gmane.linux.kernel.cross-arch,gmane.linux.ports.arm.kernel,gmane.linux.ports.riscv,gmane.linux.documentation,gmane.linux.ports.ia64,gmane.linux.ports.parisc
Organization Huawei Technologies Research and Development (UK) Ltd.
Message-ID <[email protected]>
On Tue, 07 Nov 2023 10:29:54 +0000
Russell King <[email protected]> wrote:

> From: James Morse <[email protected]>
> 
> 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 <[email protected]>
> Signed-off-by: Russell King (Oracle) <[email protected]>

Reviewed-by: Jonathan Cameron <[email protected]>