[PATCH V6 3/4] arch_topology: Export arch_freq_scale and helpers

From: Viresh Kumar
Date: Wed Mar 10 2021 - 00:24:39 EST


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@xxxxxxx>
Tested-by: Ionela Voinescu <ionela.voinescu@xxxxxxx>
Tested-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
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