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thermal/sysfs: Update governors when the 'weight' has changed

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Support governors update when the thermal instance's weight has changed.
This allows to adjust internal state for the governor.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
[ rjw: Add two empty code lines aroung the locking ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lukasz Luba 2023-12-20 23:17:52 +00:00 committed by Rafael J. Wysocki
parent 879c9dc511
commit bfc57bd168
2 changed files with 6 additions and 0 deletions
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5
drivers/thermal/thermal_sysfs.c
View File

@ -939,7 +939,12 @@ ssize_t weight_store(struct device *dev, struct device_attribute *attr,
/* Don't race with governors using the 'weight' value */
mutex_lock(&instance->tz->lock);
instance->weight = weight;
thermal_governor_update_tz(instance->tz,
THERMAL_INSTANCE_WEIGHT_CHANGED);
mutex_unlock(&instance->tz->lock);
return count;

1
include/linux/thermal.h
View File

@ -53,6 +53,7 @@ enum thermal_notify_event {
THERMAL_EVENT_KEEP_ALIVE, /* Request for user space handler to respond */
THERMAL_TZ_BIND_CDEV, /* Cooling dev is bind to the thermal zone */
THERMAL_TZ_UNBIND_CDEV, /* Cooling dev is unbind from the thermal zone */
THERMAL_INSTANCE_WEIGHT_CHANGED, /* Thermal instance weight changed */
};
/**