linux-kernel - Re: [PATCH v2 13/14] arch_topology: remove the acpi

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Date:   Mon, 11 Jul 2022 14:28:55 -0500
From:   Nathan Fontenot <nafonten@....com>
To:     Perry Yuan <Perry.Yuan@....com>, rafael.j.wysocki@...el.com,
        viresh.kumar@...aro.org, Ray.Huang@....com
Cc:     Deepak.Sharma@....com, Mario.Limonciello@....com,
        Nathan.Fontenot@....com, Alexander.Deucher@....com,
        Jinzhou.Su@....com, Xinmei.Huang@....com, Xiaojian.Du@....com,
        Li.Meng@....com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 13/14] arch_topology: remove the acpi_disabled check

On 7/9/22 09:20, Perry Yuan wrote:
> "acpi_cpc_valid" function already includes the acpi_disabled check and we can
> remove the duplicated check here
> 
> Signed-off-by: Perry Yuan <Perry.Yuan@....com>
> ---
>  drivers/base/arch_topology.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
> index 579c851a2bd7..73a8cb31529d 100644
> --- a/drivers/base/arch_topology.c
> +++ b/drivers/base/arch_topology.c
> @@ -352,7 +352,7 @@ void topology_init_cpu_capacity_cppc(void)
>  	struct cppc_perf_caps perf_caps;
>  	int cpu;
>  
> -	if (likely(acpi_disabled || !acpi_cpc_valid()))
> +	if (likely(!acpi_cpc_valid()))

I think this should be included in Patch 11/14 where the acpi_disabled check
is added to acpi_cpc_valid().

-Nathan

>  		return;
>  
>  	raw_capacity = kcalloc(num_possible_cpus(), sizeof(*raw_capacity),