#include "power_acpi_cpufreq.h"
#include "power_common.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 opened\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 \
/**
* Power info per lcore.
*/
-struct rte_power_info {
+struct acpi_power_info {
unsigned int lcore_id; /**< Logical core id */
uint32_t freqs[RTE_MAX_LCORE_FREQS]; /**< Frequency array */
uint32_t nb_freqs; /**< number of available freqs */
uint16_t turbo_enable; /**< Turbo Boost enable/disable */
} __rte_cache_aligned;
-static struct rte_power_info lcore_power_info[RTE_MAX_LCORE];
+static struct acpi_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)
+set_freq_internal(struct acpi_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 "
* governor will be saved for rolling back.
*/
static int
-power_set_governor_userspace(struct rte_power_info *pi)
+power_set_governor_userspace(struct acpi_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);
- /* Strip off terminating '\n' */
- strtok(buf, "\n");
-
- /* Save the original governor */
- rte_strscpy(pi->governor_ori, buf, sizeof(pi->governor_ori));
-
- /* 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;
- }
-
- /* 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);
-
- /* We need to flush to see if the fputs succeeds */
- val = fflush(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 power_set_governor(pi->lcore_id, POWER_GOVERNOR_USERSPACE,
+ pi->governor_ori, sizeof(pi->governor_ori));
+}
- return ret;
+/**
+ * It is to check the governor and then set the original governor back if
+ * needed by writing the sys file.
+ */
+static int
+power_set_governor_original(struct acpi_power_info *pi)
+{
+ return power_set_governor(pi->lcore_id, pi->governor_ori, NULL, 0);
}
/**
* sys file.
*/
static int
-power_get_available_freqs(struct rte_power_info *pi)
+power_get_available_freqs(struct acpi_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);
+ open_core_sysfs_file(&f, "r", POWER_SYSFILE_AVAIL_FREQ, pi->lcore_id);
+ if (f == NULL) {
+ RTE_LOG(ERR, POWER, "failed to open %s\n",
+ POWER_SYSFILE_AVAIL_FREQ);
+ goto out;
+ }
- /* Strip the line break if there is */
- p = strchr(buf, '\n');
- if (p != NULL)
- *p = 0;
+ ret = read_core_sysfs_s(f, buf, sizeof(buf));
+ if ((ret) < 0) {
+ RTE_LOG(ERR, POWER, "Failed to read %s\n",
+ POWER_SYSFILE_AVAIL_FREQ);
+ goto out;
+ }
/* Split string into at most RTE_MAX_LCORE_FREQS frequencies */
count = rte_strsplit(buf, sizeof(buf), freqs,
POWER_DEBUG_TRACE("%d frequency(s) of lcore %u are available\n",
count, pi->lcore_id);
out:
- fclose(f);
+ if (f != NULL)
+ 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)
+power_init_for_setting_freq(struct acpi_power_info *pi)
{
FILE *f;
- char fullpath[PATH_MAX];
char buf[BUFSIZ];
uint32_t i, freq;
- char *s;
+ int ret;
- snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_SETSPEED,
- pi->lcore_id);
- f = fopen(fullpath, "rw+");
- FOPEN_OR_ERR_RET(f, -1);
+ open_core_sysfs_file(&f, "rw+", POWER_SYSFILE_SETSPEED, pi->lcore_id);
+ if (f == NULL) {
+ RTE_LOG(ERR, POWER, "Failed to open %s\n",
+ POWER_SYSFILE_SETSPEED);
+ goto err;
+ }
- s = fgets(buf, sizeof(buf), f);
- FOPS_OR_NULL_GOTO(s, out);
+ ret = read_core_sysfs_s(f, buf, sizeof(buf));
+ if ((ret) < 0) {
+ RTE_LOG(ERR, POWER, "Failed to read %s\n",
+ POWER_SYSFILE_SETSPEED);
+ goto err;
+ }
freq = strtoul(buf, NULL, POWER_CONVERT_TO_DECIMAL);
for (i = 0; i < pi->nb_freqs; i++) {
}
}
-out:
- fclose(f);
+err:
+ if (f != NULL)
+ fclose(f);
return -1;
}
int
power_acpi_cpufreq_init(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
uint32_t exp_state;
if (lcore_id >= RTE_MAX_LCORE) {
return -1;
}
-/**
- * It is to check the governor and then set the original governor back if
- * needed by writing 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 management governor of lcore %u "
- "has been set back to %s successfully\n",
- pi->lcore_id, pi->governor_ori);
-out:
- fclose(f);
-
- return ret;
-}
-
int
power_acpi_cpufreq_exit(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
uint32_t exp_state;
if (lcore_id >= RTE_MAX_LCORE) {
uint32_t
power_acpi_cpufreq_freqs(unsigned int lcore_id, uint32_t *freqs, uint32_t num)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int
power_acpi_cpufreq_freq_down(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int
power_acpi_cpufreq_freq_up(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int
power_acpi_cpufreq_freq_min(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int
power_acpi_turbo_status(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int
power_acpi_enable_turbo(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int
power_acpi_disable_turbo(unsigned int lcore_id)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
int power_acpi_get_capabilities(unsigned int lcore_id,
struct rte_power_core_capabilities *caps)
{
- struct rte_power_info *pi;
+ struct acpi_power_info *pi;
if (lcore_id >= RTE_MAX_LCORE) {
RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
git.droids-corp.org / dpdk.git / blobdiff