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

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Message-Id: <1b5c83549720da480b1e23e542f44b1edb2e4157.1615351622.git.viresh.kumar@linaro.org>
Date:   Wed, 10 Mar 2021 10:53:25 +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:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Ionela Voinescu <ionela.voinescu@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH V6 3/4] arch_topology: Export arch_freq_scale and helpers

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);
 
 void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
 			     unsigned long max_freq)
-- 
2.25.0.rc1.19.g042ed3e048af