[PATCH v2 6/6] cpufreq/cppc: set the frequency used for capacity computation
From: Vincent Guittot <vincent.guittot@linaro.org>
Date: 2023-10-09 10:36:54
Also in:
linux-pm, linux-riscv, lkml
Subsystem:
cpu frequency drivers - cppc cpufreq, cpu frequency scaling framework, the rest · Maintainers:
"Rafael J. Wysocki", Viresh Kumar, Linus Torvalds
cppc cpufreq driver can register an artificial energy model. In such case, it also have to register the frequency that is used to define the CPU capacity Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> --- drivers/cpufreq/cppc_cpufreq.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index fe08ca419b3d..24c6ba349f01 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c@@ -636,6 +636,21 @@ static int populate_efficiency_class(void) return 0; } + +static void cppc_cpufreq_set_capacity_ref_freq(struct cpufreq_policy *policy) +{ + struct cppc_perf_caps *perf_caps; + struct cppc_cpudata *cpu_data; + unsigned int ref_freq; + + cpu_data = policy->driver_data; + perf_caps = &cpu_data->perf_caps; + + ref_freq = cppc_cpufreq_perf_to_khz(cpu_data, perf_caps->highest_perf); + + per_cpu(capacity_ref_freq, policy->cpu) = ref_freq; +} + static void cppc_cpufreq_register_em(struct cpufreq_policy *policy) { struct cppc_cpudata *cpu_data;
@@ -643,6 +658,9 @@ static void cppc_cpufreq_register_em(struct cpufreq_policy *policy) EM_ADV_DATA_CB(cppc_get_cpu_power, cppc_get_cpu_cost); cpu_data = policy->driver_data; + + cppc_cpufreq_set_capacity_ref_freq(policy); + em_dev_register_perf_domain(get_cpu_device(policy->cpu), get_perf_level_count(policy), &em_cb, cpu_data->shared_cpu_map, 0);
--
2.34.1
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