X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_power%2Frte_power.c;h=98eaba9154552327f3d8902ccc591d26d8c74db0;hb=4a91344b5e06081f8e2254266bb469489f6633d8;hp=ed701087dc7a508bb7726fe53b4ab4b305ccdb57;hpb=5a5f3178d4a83338e518343ea4037f56b6065f1e;p=dpdk.git

diff --git a/lib/librte_power/rte_power.c b/lib/librte_power/rte_power.c
index ed701087dc..98eaba9154 100644
--- 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"
@@ -27,6 +28,38 @@ 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)
 {
@@ -85,8 +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;
@@ -97,6 +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);
 }