linux-kernel - Re: [PATCH] arch_topology: Export cpu_scale and topology_set_thermal

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Date:   Wed, 25 Aug 2021 09:01:52 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Sudeep Holla <sudeep.holla@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Thara Gopinath <thara.gopinath@...aro.org>
Cc:     Vincent Guittot <vincent.guittot@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arch_topology: Export cpu_scale and
 topology_set_thermal_pressure()

On 23-08-21, 12:37, Viresh Kumar wrote:
> These are now used from a cpufreq driver which can be built as module,
> export them.
> 
> Fixes: 86afc1df661a ("cpufreq: qcom-cpufreq-hw: Add dcvs interrupt support")
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
> This needs to go via my ARM cpufreq tree. I will probably merge it with the
> concerned commit.
> 
>  drivers/base/arch_topology.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
> index 921312a8d957..bf9d47a16d30 100644
> --- a/drivers/base/arch_topology.c
> +++ b/drivers/base/arch_topology.c
> @@ -149,6 +149,7 @@ void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
>  }
>  
>  DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE;
> +EXPORT_SYMBOL_GPL(cpu_scale);
>  
>  void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity)
>  {
> @@ -165,6 +166,7 @@ void topology_set_thermal_pressure(const struct cpumask *cpus,
>  	for_each_cpu(cpu, cpus)
>  		WRITE_ONCE(per_cpu(thermal_pressure, cpu), th_pressure);
>  }
> +EXPORT_SYMBOL_GPL(topology_set_thermal_pressure);
>  
>  static ssize_t cpu_capacity_show(struct device *dev,
>  				 struct device_attribute *attr,
> -- 
> 2.31.1.272.g89b43f80a514

+ this

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index bf9d47a16d30..43407665918f 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -149,7 +149,7 @@ void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
 }

 DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE;
-EXPORT_SYMBOL_GPL(cpu_scale);
+EXPORT_PER_CPU_SYMBOL_GPL(cpu_scale);

 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity)


-- 
viresh