New API added, rte_power_get_capabilities(), that allows the
application to query the power and performance capabilities
of the CPU cores.
Signed-off-by: Radu Nicolau <radu.nico...@intel.com>
---
v2: fixed coding style errors, split test into separate patch
lib/librte_power/power_acpi_cpufreq.c | 21 +++++++++++++++++++++
lib/librte_power/power_acpi_cpufreq.h | 17 +++++++++++++++++
lib/librte_power/power_kvm_vm.c | 8 ++++++++
lib/librte_power/power_kvm_vm.h | 17 +++++++++++++++++
lib/librte_power/rte_power.c | 3 +++
lib/librte_power/rte_power.h | 33 +++++++++++++++++++++++++++++++++
lib/librte_power/rte_power_version.map | 7 +++++++
7 files changed, 106 insertions(+)
diff --git a/lib/librte_power/power_acpi_cpufreq.c
b/lib/librte_power/power_acpi_cpufreq.c
index bce933e..cd5978d 100644
--- a/lib/librte_power/power_acpi_cpufreq.c
+++ b/lib/librte_power/power_acpi_cpufreq.c
@@ -623,3 +623,24 @@ power_acpi_disable_turbo(unsigned int lcore_id)
return 0;
}
+
+int power_acpi_get_capabilities(unsigned int lcore_id,
+ struct rte_power_core_capabilities *caps)
+{
+ struct rte_power_info *pi;
+
+ if (lcore_id >= RTE_MAX_LCORE) {
+ RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
+ return -1;
+ }
+ if (caps == NULL) {
+ RTE_LOG(ERR, POWER, "Invalid argument\n");
+ return -1;
+ }
+
+ pi = &lcore_power_info[lcore_id];
+ caps->capabilities = 0;
+ caps->turbo = !!(pi->turbo_available);
+
+ return 0;
+}
diff --git a/lib/librte_power/power_acpi_cpufreq.h
b/lib/librte_power/power_acpi_cpufreq.h
index edeeb27..77701a9 100644
--- a/lib/librte_power/power_acpi_cpufreq.h
+++ b/lib/librte_power/power_acpi_cpufreq.h
@@ -14,6 +14,7 @@
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_string_fns.h>
+#include "rte_power.h"
#ifdef __cplusplus
extern "C" {
@@ -196,6 +197,22 @@ int power_acpi_enable_turbo(unsigned int lcore_id);
*/
int power_acpi_disable_turbo(unsigned int lcore_id);
+/**
+ * Returns power capabilities for a specific lcore.
+ *
+ * @param lcore_id
+ * lcore id.
+ * @param caps
+ * pointer to rte_power_core_capabilities object.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+int power_acpi_get_capabilities(unsigned int lcore_id,
+ struct rte_power_core_capabilities *caps);
+
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/librte_power/power_kvm_vm.c b/lib/librte_power/power_kvm_vm.c
index 38e9066..20659b7 100644
--- a/lib/librte_power/power_kvm_vm.c
+++ b/lib/librte_power/power_kvm_vm.c
@@ -124,3 +124,11 @@ power_kvm_vm_disable_turbo(unsigned int lcore_id)
{
return send_msg(lcore_id, CPU_POWER_DISABLE_TURBO);
}
+
+struct rte_power_core_capabilities;
+int power_kvm_vm_get_capabilities(__rte_unused unsigned int lcore_id,
+ __rte_unused struct rte_power_core_capabilities *caps)
+{
+ RTE_LOG(ERR, POWER, "rte_power_get_capabilities is not implemented for
Virtual Machine Power Management\n");
+ return -ENOTSUP;
+}
diff --git a/lib/librte_power/power_kvm_vm.h b/lib/librte_power/power_kvm_vm.h
index 446d699..94d4aa1 100644
--- a/lib/librte_power/power_kvm_vm.h
+++ b/lib/librte_power/power_kvm_vm.h
@@ -14,6 +14,7 @@
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_string_fns.h>
+#include "rte_power.h"
#ifdef __cplusplus
extern "C" {
@@ -177,6 +178,22 @@ int power_kvm_vm_enable_turbo(unsigned int lcore_id);
* - Negative on error.
*/
int power_kvm_vm_disable_turbo(unsigned int lcore_id);
+
+/**
+ * Returns power capabilities for a specific lcore.
+ *
+ * @param lcore_id
+ * lcore id.
+ * @param caps
+ * pointer to rte_power_core_capabilities object.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+int power_kvm_vm_get_capabilities(unsigned int lcore_id,
+ struct rte_power_core_capabilities *caps);
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/librte_power/rte_power.c b/lib/librte_power/rte_power.c
index 6c8fb40..208b791 100644
--- a/lib/librte_power/rte_power.c
+++ b/lib/librte_power/rte_power.c
@@ -24,6 +24,7 @@ rte_power_freq_change_t rte_power_freq_min = NULL;
rte_power_freq_change_t rte_power_turbo_status;
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;
int
rte_power_set_env(enum power_management_env env)
@@ -42,6 +43,7 @@ rte_power_set_env(enum power_management_env env)
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;
@@ -53,6 +55,7 @@ rte_power_set_env(enum power_management_env env)
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 {
RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d)
set\n",
env);
diff --git a/lib/librte_power/rte_power.h b/lib/librte_power/rte_power.h
index b4b7357..0a34b6f 100644
--- a/lib/librte_power/rte_power.h
+++ b/lib/librte_power/rte_power.h
@@ -247,6 +247,39 @@ extern rte_power_freq_change_t rte_power_freq_enable_turbo;
*/
extern rte_power_freq_change_t rte_power_freq_disable_turbo;
+/**
+ * Power capabilities summary.
+ */
+struct rte_power_core_capabilities {
+ RTE_STD_C11
+ union {
+ uint64_t capabilities;
+ RTE_STD_C11
+ struct {
+ uint64_t turbo:1; /**< Turbo can be enabled. */
+ };
+ };
+};
+
+/**
+ * Returns power capabilities for a specific lcore.
+ * Function pointer definition. Review each environments
+ * specific documentation for usage.
+ *
+ * @param lcore_id
+ * lcore id.
+ * @param caps
+ * pointer to rte_power_core_capabilities object.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+typedef int (*rte_power_get_capabilities_t)(unsigned int lcore_id,
+ struct rte_power_core_capabilities *caps);
+
+extern rte_power_get_capabilities_t rte_power_get_capabilities;
+
#ifdef __cplusplus
}
diff --git a/lib/librte_power/rte_power_version.map
b/lib/librte_power/rte_power_version.map
index 96dc42e..1c577fe 100644
--- a/lib/librte_power/rte_power_version.map
+++ b/lib/librte_power/rte_power_version.map
@@ -25,4 +25,11 @@ DPDK_17.11 {
rte_power_freq_enable_turbo;
rte_power_turbo_status;
+} DPDK_2.0;
+
+DPDK_18.05 {
+ global:
+
+ rte_power_get_capabilities;
+
} DPDK_2.0;
\ No newline at end of file
--
2.7.5
