-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <limits.h>
-
-#include <rte_memcpy.h>
-#include <rte_atomic.h>
+#include <rte_errno.h>
+#include <rte_spinlock.h>
#include "rte_power.h"
-
-#ifdef RTE_LIBRTE_POWER_DEBUG
-#define POWER_DEBUG_TRACE(fmt, args...) do { \
- RTE_LOG(ERR, POWER, "%s: " fmt, __func__, ## args); \
- } while (0)
-#else
-#define POWER_DEBUG_TRACE(fmt, args...)
-#endif
-
-#define FOPEN_OR_ERR_RET(f, retval) do { \
- if ((f) == NULL) { \
- RTE_LOG(ERR, POWER, "File not openned\n"); \
- return (retval); \
- } \
-} while(0)
-
-#define FOPS_OR_NULL_GOTO(ret, label) do { \
- if ((ret) == NULL) { \
- RTE_LOG(ERR, POWER, "fgets returns nothing\n"); \
- goto label; \
- } \
-} while(0)
-
-#define FOPS_OR_ERR_GOTO(ret, label) do { \
- if ((ret) < 0) { \
- RTE_LOG(ERR, POWER, "File operations failed\n"); \
- goto label; \
- } \
-} while(0)
-
-#define STR_SIZE 1024
-#define POWER_CONVERT_TO_DECIMAL 10
-
-#define POWER_GOVERNOR_USERSPACE "userspace"
-#define POWER_SYSFILE_GOVERNOR \
- "/sys/devices/system/cpu/cpu%u/cpufreq/scaling_governor"
-#define POWER_SYSFILE_AVAIL_FREQ \
- "/sys/devices/system/cpu/cpu%u/cpufreq/scaling_available_frequencies"
-#define POWER_SYSFILE_SETSPEED \
- "/sys/devices/system/cpu/cpu%u/cpufreq/scaling_setspeed"
-
-enum power_state {
- POWER_IDLE = 0,
- POWER_ONGOING,
- POWER_USED,
- POWER_UNKNOWN
-};
-
-/**
- * Power info per lcore.
- */
-struct rte_power_info {
- unsigned lcore_id; /**< Logical core id */
- uint32_t freqs[RTE_MAX_LCORE_FREQS]; /**< Frequency array */
- uint32_t nb_freqs; /**< number of available freqs */
- FILE *f; /**< FD of scaling_setspeed */
- char governor_ori[32]; /**< Original governor name */
- uint32_t curr_idx; /**< Freq index in freqs array */
- volatile uint32_t state; /**< Power in use state */
-} __rte_cache_aligned;
-
-static struct rte_power_info lcore_power_info[RTE_MAX_LCORE];
-
-/**
- * It is to set specific freq for specific logical core, according to the index
- * of supported frequencies.
- */
-static int
-set_freq_internal(struct rte_power_info *pi, uint32_t idx)
-{
- if (idx >= RTE_MAX_LCORE_FREQS || idx >= pi->nb_freqs) {
- RTE_LOG(ERR, POWER, "Invalid frequency index %u, which "
- "should be less than %u\n", idx, pi->nb_freqs);
- return -1;
- }
-
- /* Check if it is the same as current */
- if (idx == pi->curr_idx)
- return 0;
-
- POWER_DEBUG_TRACE("Freqency[%u] %u to be set for lcore %u\n",
- idx, pi->freqs[idx], pi->lcore_id);
- if (fseek(pi->f, 0, SEEK_SET) < 0) {
- RTE_LOG(ERR, POWER, "Fail to set file position indicator to 0 "
- "for setting frequency for lcore %u\n", pi->lcore_id);
- return -1;
- }
- if (fprintf(pi->f, "%u", pi->freqs[idx]) < 0) {
- RTE_LOG(ERR, POWER, "Fail to write new frequency for "
- "lcore %u\n", pi->lcore_id);
- return -1;
- }
- fflush(pi->f);
- pi->curr_idx = idx;
-
- return 1;
-}
-
-/**
- * It is to check the current scaling governor by reading sys file, and then
- * set it into 'userspace' if it is not by writing the sys file. The original
- * governor will be saved for rolling back.
- */
-static int
-power_set_governor_userspace(struct rte_power_info *pi)
-{
- FILE *f;
- int ret = -1;
- char buf[BUFSIZ];
- char fullpath[PATH_MAX];
- char *s;
- int val;
-
- snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_GOVERNOR,
- pi->lcore_id);
- f = fopen(fullpath, "rw+");
- FOPEN_OR_ERR_RET(f, ret);
-
- s = fgets(buf, sizeof(buf), f);
- FOPS_OR_NULL_GOTO(s, out);
-
- /* Check if current governor is userspace */
- if (strncmp(buf, POWER_GOVERNOR_USERSPACE,
- sizeof(POWER_GOVERNOR_USERSPACE)) == 0) {
- ret = 0;
- POWER_DEBUG_TRACE("Power management governor of lcore %u is "
- "already userspace\n", pi->lcore_id);
- goto out;
- }
- /* Save the original governor */
- snprintf(pi->governor_ori, sizeof(pi->governor_ori), "%s", buf);
-
- /* Write 'userspace' to the governor */
- val = fseek(f, 0, SEEK_SET);
- FOPS_OR_ERR_GOTO(val, out);
-
- val = fputs(POWER_GOVERNOR_USERSPACE, f);
- FOPS_OR_ERR_GOTO(val, out);
-
- ret = 0;
- RTE_LOG(INFO, POWER, "Power management governor of lcore %u has been "
- "set to user space successfully\n", pi->lcore_id);
-out:
- fclose(f);
-
- return ret;
-}
-
-/**
- * It is to get the available frequencies of the specific lcore by reading the
- * sys file.
- */
-static int
-power_get_available_freqs(struct rte_power_info *pi)
-{
- FILE *f;
- int ret = -1, i, count;
- char *p;
- char buf[BUFSIZ];
- char fullpath[PATH_MAX];
- char *freqs[RTE_MAX_LCORE_FREQS];
- char *s;
-
- snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_AVAIL_FREQ,
- pi->lcore_id);
- f = fopen(fullpath, "r");
- FOPEN_OR_ERR_RET(f, ret);
-
- s = fgets(buf, sizeof(buf), f);
- FOPS_OR_NULL_GOTO(s, out);
-
- /* Strip the line break if there is */
- p = strchr(buf, '\n');
- if (p != NULL)
- *p = 0;
-
- /* Split string into at most RTE_MAX_LCORE_FREQS frequencies */
- count = rte_strsplit(buf, sizeof(buf), freqs,
- RTE_MAX_LCORE_FREQS, ' ');
- if (count <= 0) {
- RTE_LOG(ERR, POWER, "No available frequency in "
- ""POWER_SYSFILE_AVAIL_FREQ"\n", pi->lcore_id);
- goto out;
- }
- if (count >= RTE_MAX_LCORE_FREQS) {
- RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
- count);
- goto out;
- }
-
- /* Store the available frequncies into power context */
- for (i = 0, pi->nb_freqs = 0; i < count; i++) {
- POWER_DEBUG_TRACE("Lcore %u frequency[%d]: %s\n", pi->lcore_id,
- i, freqs[i]);
- pi->freqs[pi->nb_freqs++] = strtoul(freqs[i], &p,
- POWER_CONVERT_TO_DECIMAL);
- }
-
- ret = 0;
- POWER_DEBUG_TRACE("%d frequencie(s) of lcore %u are available\n",
- count, pi->lcore_id);
-out:
- fclose(f);
-
- return ret;
-}
-
-/**
- * It is to fopen the sys file for the future setting the lcore frequency.
- */
-static int
-power_init_for_setting_freq(struct rte_power_info *pi)
+#include "power_acpi_cpufreq.h"
+#include "power_kvm_vm.h"
+#include "power_pstate_cpufreq.h"
+#include "power_common.h"
+
+enum power_management_env global_default_env = PM_ENV_NOT_SET;
+
+static rte_spinlock_t global_env_cfg_lock = RTE_SPINLOCK_INITIALIZER;
+
+/* function pointers */
+rte_power_freqs_t rte_power_freqs = NULL;
+rte_power_get_freq_t rte_power_get_freq = NULL;
+rte_power_set_freq_t rte_power_set_freq = NULL;
+rte_power_freq_change_t rte_power_freq_up = NULL;
+rte_power_freq_change_t rte_power_freq_down = NULL;
+rte_power_freq_change_t rte_power_freq_max = NULL;
+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;
+
+static void
+reset_power_function_ptrs(void)
{
- FILE *f;
- char fullpath[PATH_MAX];
- char buf[BUFSIZ];
- uint32_t i, freq;
- char *s;
-
- snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_SETSPEED,
- pi->lcore_id);
- f = fopen(fullpath, "rw+");
- FOPEN_OR_ERR_RET(f, -1);
-
- s = fgets(buf, sizeof(buf), f);
- FOPS_OR_NULL_GOTO(s, out);
-
- freq = strtoul(buf, NULL, POWER_CONVERT_TO_DECIMAL);
- for (i = 0; i < pi->nb_freqs; i++) {
- if (freq == pi->freqs[i]) {
- pi->curr_idx = i;
- pi->f = f;
- return 0;
- }
- }
-
-out:
- fclose(f);
-
- return -1;
+ 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_init(unsigned lcore_id)
+rte_power_check_env_supported(enum power_management_env env)
{
- struct rte_power_info *pi;
-
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Lcore id %u can not exceeds %u\n",
- lcore_id, RTE_MAX_LCORE - 1U);
- return -1;
- }
-
- pi = &lcore_power_info[lcore_id];
- if (rte_atomic32_cmpset(&(pi->state), POWER_IDLE, POWER_ONGOING)
- == 0) {
- RTE_LOG(INFO, POWER, "Power management of lcore %u is "
- "in use\n", lcore_id);
+ 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;
}
-
- pi->lcore_id = lcore_id;
- /* Check and set the governor */
- if (power_set_governor_userspace(pi) < 0) {
- RTE_LOG(ERR, POWER, "Cannot set governor of lcore %u to "
- "userspace\n", lcore_id);
- goto fail;
- }
-
- /* Get the available frequencies */
- if (power_get_available_freqs(pi) < 0) {
- RTE_LOG(ERR, POWER, "Cannot get available frequencies of "
- "lcore %u\n", lcore_id);
- goto fail;
- }
-
- /* Init for setting lcore frequency */
- if (power_init_for_setting_freq(pi) < 0) {
- RTE_LOG(ERR, POWER, "Cannot init for setting frequency for "
- "lcore %u\n", lcore_id);
- goto fail;
- }
-
- /* Set freq to max by default */
- if (rte_power_freq_max(lcore_id) < 0) {
- RTE_LOG(ERR, POWER, "Cannot set frequency of lcore %u "
- "to max\n", lcore_id);
- goto fail;
- }
-
- RTE_LOG(INFO, POWER, "Initialized successfully for lcore %u "
- "power manamgement\n", lcore_id);
- rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_USED);
-
- return 0;
-
-fail:
- rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_UNKNOWN);
-
- return -1;
-}
-
-/**
- * It is to check the governor and then set the original governor back if
- * needed by writing the the sys file.
- */
-static int
-power_set_governor_original(struct rte_power_info *pi)
-{
- FILE *f;
- int ret = -1;
- char buf[BUFSIZ];
- char fullpath[PATH_MAX];
- char *s;
- int val;
-
- snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_GOVERNOR,
- pi->lcore_id);
- f = fopen(fullpath, "rw+");
- FOPEN_OR_ERR_RET(f, ret);
-
- s = fgets(buf, sizeof(buf), f);
- FOPS_OR_NULL_GOTO(s, out);
-
- /* Check if the governor to be set is the same as current */
- if (strncmp(buf, pi->governor_ori, sizeof(pi->governor_ori)) == 0) {
- ret = 0;
- POWER_DEBUG_TRACE("Power management governor of lcore %u "
- "has already been set to %s\n",
- pi->lcore_id, pi->governor_ori);
- goto out;
- }
-
- /* Write back the original governor */
- val = fseek(f, 0, SEEK_SET);
- FOPS_OR_ERR_GOTO(val, out);
-
- val = fputs(pi->governor_ori, f);
- FOPS_OR_ERR_GOTO(val, out);
-
- ret = 0;
- RTE_LOG(INFO, POWER, "Power manamgement governor of lcore %u "
- "has been set back to %s successfully\n",
- pi->lcore_id, pi->governor_ori);
-out:
- fclose(f);
-
- return ret;
}
int
-rte_power_exit(unsigned lcore_id)
+rte_power_set_env(enum power_management_env env)
{
- struct rte_power_info *pi;
+ rte_spinlock_lock(&global_env_cfg_lock);
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Lcore id %u can not exceeds %u\n",
- lcore_id, RTE_MAX_LCORE - 1U);
- return -1;
- }
- pi = &lcore_power_info[lcore_id];
- if (rte_atomic32_cmpset(&(pi->state), POWER_USED, POWER_ONGOING)
- == 0) {
- RTE_LOG(INFO, POWER, "Power management of lcore %u is "
- "not used\n", lcore_id);
+ 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 -1;
}
- /* Close FD of setting freq */
- fclose(pi->f);
- pi->f = NULL;
-
- /* Set the governor back to the original */
- if (power_set_governor_original(pi) < 0) {
- RTE_LOG(ERR, POWER, "Cannot set the governor of %u back "
- "to the original\n", lcore_id);
- goto fail;
- }
-
- RTE_LOG(INFO, POWER, "Power management of lcore %u has exited from "
- "'userspace' mode and been set back to the "
- "original\n", lcore_id);
- rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_IDLE);
-
- return 0;
-
-fail:
- rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_UNKNOWN);
-
- return -1;
-}
-
-uint32_t
-rte_power_freqs(unsigned lcore_id, uint32_t *freqs, uint32_t num)
-{
- struct rte_power_info *pi;
-
- if (lcore_id >= RTE_MAX_LCORE || !freqs) {
- RTE_LOG(ERR, POWER, "Invalid input parameter\n");
- return 0;
- }
-
- pi = &lcore_power_info[lcore_id];
- if (num < pi->nb_freqs) {
- RTE_LOG(ERR, POWER, "Buffer size is not enough\n");
- return 0;
- }
- rte_memcpy(freqs, pi->freqs, pi->nb_freqs * sizeof(uint32_t));
-
- return pi->nb_freqs;
+ 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);
+ return ret;
}
-uint32_t
-rte_power_get_freq(unsigned lcore_id)
+void
+rte_power_unset_env(void)
{
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
- return RTE_POWER_INVALID_FREQ_INDEX;
- }
-
- return lcore_power_info[lcore_id].curr_idx;
+ 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);
}
-int
-rte_power_set_freq(unsigned lcore_id, uint32_t index)
-{
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
- return -1;
- }
-
- return set_freq_internal(&(lcore_power_info[lcore_id]), index);
+enum power_management_env
+rte_power_get_env(void) {
+ return global_default_env;
}
int
-rte_power_freq_down(unsigned lcore_id)
+rte_power_init(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ int ret = -1;
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
- return -1;
+ switch (global_default_env) {
+ case PM_ENV_ACPI_CPUFREQ:
+ return power_acpi_cpufreq_init(lcore_id);
+ case PM_ENV_KVM_VM:
+ return power_kvm_vm_init(lcore_id);
+ case PM_ENV_PSTATE_CPUFREQ:
+ return power_pstate_cpufreq_init(lcore_id);
+ default:
+ RTE_LOG(INFO, POWER, "Env isn't set yet!\n");
+ }
+
+ /* Auto detect Environment */
+ RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power management...\n");
+ ret = power_acpi_cpufreq_init(lcore_id);
+ if (ret == 0) {
+ rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
+ goto out;
}
- pi = &lcore_power_info[lcore_id];
- if (pi->curr_idx + 1 == pi->nb_freqs)
- return 0;
-
- /* Frequencies in the array are from high to low. */
- return set_freq_internal(pi, pi->curr_idx + 1);
-}
-
-int
-rte_power_freq_up(unsigned lcore_id)
-{
- struct rte_power_info *pi;
-
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
- return -1;
+ RTE_LOG(INFO, POWER, "Attempting to initialise PSTAT power management...\n");
+ ret = power_pstate_cpufreq_init(lcore_id);
+ if (ret == 0) {
+ rte_power_set_env(PM_ENV_PSTATE_CPUFREQ);
+ goto out;
}
- pi = &lcore_power_info[lcore_id];
- if (pi->curr_idx == 0)
- return 0;
-
- /* Frequencies in the array are from high to low. */
- return set_freq_internal(pi, pi->curr_idx - 1);
-}
-
-int
-rte_power_freq_max(unsigned lcore_id)
-{
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
- return -1;
+ RTE_LOG(INFO, POWER, "Attempting to initialise VM power management...\n");
+ ret = power_kvm_vm_init(lcore_id);
+ if (ret == 0) {
+ rte_power_set_env(PM_ENV_KVM_VM);
+ goto out;
}
-
- /* Frequencies in the array are from high to low. */
- return set_freq_internal(&lcore_power_info[lcore_id], 0);
+ RTE_LOG(ERR, POWER, "Unable to set Power Management Environment for lcore "
+ "%u\n", lcore_id);
+out:
+ return ret;
}
int
-rte_power_freq_min(unsigned lcore_id)
+rte_power_exit(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ switch (global_default_env) {
+ case PM_ENV_ACPI_CPUFREQ:
+ return power_acpi_cpufreq_exit(lcore_id);
+ case PM_ENV_KVM_VM:
+ return power_kvm_vm_exit(lcore_id);
+ case PM_ENV_PSTATE_CPUFREQ:
+ return power_pstate_cpufreq_exit(lcore_id);
+ default:
+ RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit gracefully\n");
- if (lcore_id >= RTE_MAX_LCORE) {
- RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
- return -1;
}
+ return -1;
- pi = &lcore_power_info[lcore_id];
-
- /* Frequencies in the array are from high to low. */
- return set_freq_internal(pi, pi->nb_freqs - 1);
}
-
git.droids-corp.org / dpdk.git / blobdiff