linux-kernel - [PATCH V3 1/2] cpufreq: Export cpufreq_update

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Message-ID: <20240227181632.659133-2-quic_sibis@quicinc.com>
Date: Tue, 27 Feb 2024 23:46:31 +0530
From: Sibi Sankar <quic_sibis@...cinc.com>
To: <sudeep.holla@....com>, <cristian.marussi@....com>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <morten.rasmussen@....com>,
        <dietmar.eggemann@....com>, <lukasz.luba@....com>,
        <pierre.gondois@....com>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_mdtipton@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, Sibi Sankar <quic_sibis@...cinc.com>
Subject: [PATCH V3 1/2] cpufreq: Export cpufreq_update_pressure

The SCMI cpufreq driver doesn't require any additional signal
smoothing provided by arch_update_hw_pressure interface, export
cpufreq_update_pressure so that it can be called upon directly
instead.

Suggested-by: Lukasz Luba <lukasz.luba@....com>
Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
---
 drivers/cpufreq/cpufreq.c | 3 ++-
 include/linux/cpufreq.h   | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 76002aa3d12d..bdec2dfd77eb 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2573,7 +2573,7 @@ DEFINE_PER_CPU(unsigned long, cpufreq_pressure);
  *
  * Update the value of cpufreq pressure for all @cpus in the policy.
  */
-static void cpufreq_update_pressure(struct cpufreq_policy *policy)
+void cpufreq_update_pressure(struct cpufreq_policy *policy)
 {
 	unsigned long max_capacity, capped_freq, pressure;
 	u32 max_freq;
@@ -2598,6 +2598,7 @@ static void cpufreq_update_pressure(struct cpufreq_policy *policy)
 	for_each_cpu(cpu, policy->related_cpus)
 		WRITE_ONCE(per_cpu(cpufreq_pressure, cpu), pressure);
 }
+EXPORT_SYMBOL(cpufreq_update_pressure);
 
 /**
  * cpufreq_set_policy - Modify cpufreq policy parameters.
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 414bfc976b30..957bf8e4ca0d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -241,6 +241,7 @@ struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
 void cpufreq_enable_fast_switch(struct cpufreq_policy *policy);
 void cpufreq_disable_fast_switch(struct cpufreq_policy *policy);
 bool has_target_index(void);
+void cpufreq_update_pressure(struct cpufreq_policy *policy);
 
 DECLARE_PER_CPU(unsigned long, cpufreq_pressure);
 static inline unsigned long cpufreq_get_pressure(int cpu)
@@ -270,6 +271,7 @@ static inline bool cpufreq_supports_freq_invariance(void)
 }
 static inline void disable_cpufreq(void) { }
 static inline void cpufreq_update_limits(unsigned int cpu) { }
+static inline void cpufreq_update_pressure(struct cpufreq_policy *policy) { }
 static inline unsigned long cpufreq_get_pressure(int cpu)
 {
 	return 0;
-- 
2.34.1