Re: [PATCH 1/4] drivers core: Introduce CPU type sysfs interface

[Randy Dunlap]

On 10/2/20 6:17 PM, Ricardo Neri wrote:
> +/**
> + * arch_get_cpu_type() - Get the CPU type number
> + * @cpu:	Index of the CPU of which the index is needed
> + *
> + * Get the CPU type number of @cpu, a non-zero unsigned 32-bit number that

Are you sure that @cpu is non-zero?


> + * uniquely identifies a type of CPU micro-architecture. All CPUs of the same
> + * type have the same type number. Type numbers are defined by each CPU
> + * architecture.
> + */
> +u32 __weak arch_get_cpu_type(int cpu)
> +{
> +	return 0;
> +}

arch_get_cpu_type() in patch 4/4 allows @cpu to be 0.


-- 
~Randy