Messages in this thread Patch in this message | | | From | Vincent Guittot <> | Subject | [PATCH v2 6/6] cpufreq/cppc: set the frequency used for capacity computation | Date | Mon, 9 Oct 2023 12:36:21 +0200 |
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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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