linux-kernel - Re: [PATCH V6 3/4] arch_topology: Export arch_freq

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Date:   Fri, 12 Mar 2021 10:35:47 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rafael Wysocki <rjw@...ysocki.net>,
        Sudeep Holla <sudeep.holla@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Ionela Voinescu <ionela.voinescu@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V6 3/4] arch_topology: Export arch_freq_scale and helpers

On 10-03-21, 10:53, Viresh Kumar wrote:
> It is possible now for other parts of the kernel to provide their own
> implementation of sched_freq_tick() and they can very well be modules
> themselves (like CPPC cpufreq driver, which is going to use these in a
> later commit).
> 
> Export arch_freq_scale and topology_{set|clear}_scale_freq_source().
> 
> Reviewed-by: Ionela Voinescu <ionela.voinescu@....com>
> Tested-by: Ionela Voinescu <ionela.voinescu@....com>
> Tested-by: Vincent Guittot <vincent.guittot@...aro.org>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  drivers/base/arch_topology.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
> index ebcd2ea3091f..995e52b9eca4 100644
> --- a/drivers/base/arch_topology.c
> +++ b/drivers/base/arch_topology.c
> @@ -78,6 +78,7 @@ void topology_set_scale_freq_source(struct scale_freq_data *data,
>  
>  	update_scale_freq_invariant(true);
>  }
> +EXPORT_SYMBOL_GPL(topology_set_scale_freq_source);
>  
>  void topology_clear_scale_freq_source(enum scale_freq_source source,
>  				      const struct cpumask *cpus)
> @@ -96,6 +97,7 @@ void topology_clear_scale_freq_source(enum scale_freq_source source,
>  
>  	update_scale_freq_invariant(false);
>  }
> +EXPORT_SYMBOL_GPL(topology_clear_scale_freq_source);
>  
>  void topology_scale_freq_tick(void)
>  {
> @@ -106,6 +108,7 @@ void topology_scale_freq_tick(void)
>  }
>  
>  DEFINE_PER_CPU(unsigned long, arch_freq_scale) = SCHED_CAPACITY_SCALE;
> +EXPORT_SYMBOL_GPL(arch_freq_scale);

Did minor change here after testing bot complaint of sparse warning.

-EXPORT_SYMBOL_GPL(arch_freq_scale);
+EXPORT_PER_CPU_SYMBOL_GPL(arch_freq_scale);

-- 
viresh