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platform/x86/intel-uncore-freq: Add efficiency latency control to sysfs interface

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Add the TPMI efficiency latency control fields to the sysfs interface.
The sysfs files are mapped to the TPMI uncore driver via the registered
uncore_read and uncore_write driver callbacks. These fields are not
populated on older non TPMI hardware.

Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240828153657.1296410-4-tero.kristo@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Tero Kristo 2024-08-28 18:34:55 +03:00 committed by Hans de Goede
parent bb516dc79c
commit 24b6616355
2 changed files with 49 additions and 6 deletions
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42
drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
View File

@ -60,11 +60,16 @@ static ssize_t show_attr(struct uncore_data *data, char *buf, enum uncore_index
static ssize_t store_attr(struct uncore_data *data, const char *buf, ssize_t count,
enum uncore_index index)
{
unsigned int input;
unsigned int input = 0;
int ret;
if (kstrtouint(buf, 10, &input))
return -EINVAL;
if (index == UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE) {
if (kstrtobool(buf, (bool *)&input))
return -EINVAL;
} else {
if (kstrtouint(buf, 10, &input))
return -EINVAL;
}
mutex_lock(&uncore_lock);
ret = uncore_write(data, input, index);
@ -103,6 +108,18 @@ show_uncore_attr(max_freq_khz, UNCORE_INDEX_MAX_FREQ);
show_uncore_attr(current_freq_khz, UNCORE_INDEX_CURRENT_FREQ);
store_uncore_attr(elc_low_threshold_percent, UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD);
store_uncore_attr(elc_high_threshold_percent, UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD);
store_uncore_attr(elc_high_threshold_enable,
UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE);
store_uncore_attr(elc_floor_freq_khz, UNCORE_INDEX_EFF_LAT_CTRL_FREQ);
show_uncore_attr(elc_low_threshold_percent, UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD);
show_uncore_attr(elc_high_threshold_percent, UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD);
show_uncore_attr(elc_high_threshold_enable,
UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE);
show_uncore_attr(elc_floor_freq_khz, UNCORE_INDEX_EFF_LAT_CTRL_FREQ);
#define show_uncore_data(member_name) \
static ssize_t show_##member_name(struct kobject *kobj, \
struct kobj_attribute *attr, char *buf)\
@ -146,7 +163,8 @@ show_uncore_data(initial_max_freq_khz);
static int create_attr_group(struct uncore_data *data, char *name)
{
int ret, freq, index = 0;
int ret, index = 0;
unsigned int val;
init_attribute_rw(max_freq_khz);
init_attribute_rw(min_freq_khz);
@ -168,10 +186,24 @@ static int create_attr_group(struct uncore_data *data, char *name)
data->uncore_attrs[index++] = &data->initial_min_freq_khz_kobj_attr.attr;
data->uncore_attrs[index++] = &data->initial_max_freq_khz_kobj_attr.attr;
ret = uncore_read(data, &freq, UNCORE_INDEX_CURRENT_FREQ);
ret = uncore_read(data, &val, UNCORE_INDEX_CURRENT_FREQ);
if (!ret)
data->uncore_attrs[index++] = &data->current_freq_khz_kobj_attr.attr;
ret = uncore_read(data, &val, UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD);
if (!ret) {
init_attribute_rw(elc_low_threshold_percent);
init_attribute_rw(elc_high_threshold_percent);
init_attribute_rw(elc_high_threshold_enable);
init_attribute_rw(elc_floor_freq_khz);
data->uncore_attrs[index++] = &data->elc_low_threshold_percent_kobj_attr.attr;
data->uncore_attrs[index++] = &data->elc_high_threshold_percent_kobj_attr.attr;
data->uncore_attrs[index++] =
&data->elc_high_threshold_enable_kobj_attr.attr;
data->uncore_attrs[index++] = &data->elc_floor_freq_khz_kobj_attr.attr;
}
data->uncore_attrs[index] = NULL;
data->uncore_attr_group.name = name;

13
drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.h
View File

@ -34,6 +34,13 @@
* @domain_id_kobj_attr: Storage for kobject attribute domain_id
* @fabric_cluster_id_kobj_attr: Storage for kobject attribute fabric_cluster_id
* @package_id_kobj_attr: Storage for kobject attribute package_id
* @elc_low_threshold_percent_kobj_attr:
Storage for kobject attribute elc_low_threshold_percent
* @elc_high_threshold_percent_kobj_attr:
Storage for kobject attribute elc_high_threshold_percent
* @elc_high_threshold_enable_kobj_attr:
Storage for kobject attribute elc_high_threshold_enable
* @elc_floor_freq_khz_kobj_attr: Storage for kobject attribute elc_floor_freq_khz
* @uncore_attrs: Attribute storage for group creation
*
* This structure is used to encapsulate all data related to uncore sysfs
@ -61,7 +68,11 @@ struct uncore_data {
struct kobj_attribute domain_id_kobj_attr;
struct kobj_attribute fabric_cluster_id_kobj_attr;
struct kobj_attribute package_id_kobj_attr;
struct attribute *uncore_attrs[9];
struct kobj_attribute elc_low_threshold_percent_kobj_attr;
struct kobj_attribute elc_high_threshold_percent_kobj_attr;
struct kobj_attribute elc_high_threshold_enable_kobj_attr;
struct kobj_attribute elc_floor_freq_khz_kobj_attr;
struct attribute *uncore_attrs[13];
};
#define UNCORE_DOMAIN_ID_INVALID -1