+ int ret = 0;
+
+ if (env == PM_ENV_ACPI_CPUFREQ) {
+ rte_power_freqs = power_acpi_cpufreq_freqs;
+ rte_power_get_freq = power_acpi_cpufreq_get_freq;
+ rte_power_set_freq = power_acpi_cpufreq_set_freq;
+ rte_power_freq_up = power_acpi_cpufreq_freq_up;
+ rte_power_freq_down = power_acpi_cpufreq_freq_down;
+ rte_power_freq_min = power_acpi_cpufreq_freq_min;
+ rte_power_freq_max = power_acpi_cpufreq_freq_max;
+ rte_power_turbo_status = power_acpi_turbo_status;
+ rte_power_freq_enable_turbo = power_acpi_enable_turbo;
+ rte_power_freq_disable_turbo = power_acpi_disable_turbo;
+ rte_power_get_capabilities = power_acpi_get_capabilities;
+ } else if (env == PM_ENV_KVM_VM) {
+ rte_power_freqs = power_kvm_vm_freqs;
+ rte_power_get_freq = power_kvm_vm_get_freq;
+ rte_power_set_freq = power_kvm_vm_set_freq;
+ rte_power_freq_up = power_kvm_vm_freq_up;
+ rte_power_freq_down = power_kvm_vm_freq_down;
+ rte_power_freq_min = power_kvm_vm_freq_min;
+ rte_power_freq_max = power_kvm_vm_freq_max;
+ rte_power_turbo_status = power_kvm_vm_turbo_status;
+ rte_power_freq_enable_turbo = power_kvm_vm_enable_turbo;
+ rte_power_freq_disable_turbo = power_kvm_vm_disable_turbo;
+ rte_power_get_capabilities = power_kvm_vm_get_capabilities;
+ } else if (env == PM_ENV_PSTATE_CPUFREQ) {
+ rte_power_freqs = power_pstate_cpufreq_freqs;
+ rte_power_get_freq = power_pstate_cpufreq_get_freq;
+ rte_power_set_freq = power_pstate_cpufreq_set_freq;
+ rte_power_freq_up = power_pstate_cpufreq_freq_up;
+ rte_power_freq_down = power_pstate_cpufreq_freq_down;
+ rte_power_freq_min = power_pstate_cpufreq_freq_min;
+ rte_power_freq_max = power_pstate_cpufreq_freq_max;
+ rte_power_turbo_status = power_pstate_turbo_status;
+ rte_power_freq_enable_turbo = power_pstate_enable_turbo;
+ rte_power_freq_disable_turbo = power_pstate_disable_turbo;
+ rte_power_get_capabilities = power_pstate_get_capabilities;
+
+ } else {
+ RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d) set\n",
+ env);
+ ret = -1;
+ }
+
+ if (ret == 0)
+ global_default_env = env;
+ else {
+ global_default_env = PM_ENV_NOT_SET;
+ reset_power_function_ptrs();
+ }
+
+ rte_spinlock_unlock(&global_env_cfg_lock);