common/mlx5: fix regex register layout

[dpdk.git] / lib / librte_power / rte_power.c

diff --git a/lib/librte_power/rte_power.c b/lib/librte_power/rte_power.c
index 540d69b..98eaba9 100644 (file)
--- a/lib/librte_power/rte_power.c
+++ b/lib/librte_power/rte_power.c
@@ -2,6 +2,7 @@
  * Copyright(c) 2010-2014 Intel Corporation
  */
 
+#include <rte_errno.h>
 #include <rte_spinlock.h>
 
 #include "rte_power.h"
@@ -27,14 +28,47 @@ rte_power_freq_change_t rte_power_freq_enable_turbo;
 rte_power_freq_change_t rte_power_freq_disable_turbo;
 rte_power_get_capabilities_t rte_power_get_capabilities;
 
+static void
+reset_power_function_ptrs(void)
+{
+       rte_power_freqs  = NULL;
+       rte_power_get_freq = NULL;
+       rte_power_set_freq = NULL;
+       rte_power_freq_up = NULL;
+       rte_power_freq_down = NULL;
+       rte_power_freq_max = NULL;
+       rte_power_freq_min = NULL;
+       rte_power_turbo_status = NULL;
+       rte_power_freq_enable_turbo = NULL;
+       rte_power_freq_disable_turbo = NULL;
+       rte_power_get_capabilities = NULL;
+}
+
+int
+rte_power_check_env_supported(enum power_management_env env)
+{
+       switch (env) {
+       case PM_ENV_ACPI_CPUFREQ:
+               return power_acpi_cpufreq_check_supported();
+       case PM_ENV_PSTATE_CPUFREQ:
+               return power_pstate_cpufreq_check_supported();
+       case PM_ENV_KVM_VM:
+               return power_kvm_vm_check_supported();
+       default:
+               rte_errno = EINVAL;
+               return -1;
+       }
+}
+
 int
 rte_power_set_env(enum power_management_env env)
 {
        rte_spinlock_lock(&global_env_cfg_lock);
 
        if (global_default_env != PM_ENV_NOT_SET) {
+               RTE_LOG(ERR, POWER, "Power Management Environment already set.\n");
                rte_spinlock_unlock(&global_env_cfg_lock);
-               return 0;
+               return -1;
        }
 
        int ret = 0;
@@ -84,8 +118,10 @@ rte_power_set_env(enum power_management_env env)
 
        if (ret == 0)
                global_default_env = env;
-       else
+       else {
                global_default_env = PM_ENV_NOT_SET;
+               reset_power_function_ptrs();
+       }
 
        rte_spinlock_unlock(&global_env_cfg_lock);
        return ret;
@@ -96,6 +132,7 @@ rte_power_unset_env(void)
 {
        rte_spinlock_lock(&global_env_cfg_lock);
        global_default_env = PM_ENV_NOT_SET;
+       reset_power_function_ptrs();
        rte_spinlock_unlock(&global_env_cfg_lock);
 }