Messages in this thread Patch in this message | | | From | Lukasz Luba <> | Subject | [PATCH v2 7/8] thermal/sysfs: Update governors when the 'weight' has changed | Date | Tue, 12 Dec 2023 13:48:43 +0000 |
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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> --- drivers/thermal/thermal_sysfs.c | 9 +++++++++ include/linux/thermal.h | 1 + 2 files changed, 10 insertions(+)
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c index df85df7d4a88..9afa2e2b76b9 100644 --- a/drivers/thermal/thermal_sysfs.c +++ b/drivers/thermal/thermal_sysfs.c @@ -957,6 +957,14 @@ weight_show(struct device *dev, struct device_attribute *attr, char *buf) return sprintf(buf, "%d\n", instance->weight); } +static void handle_weight_update(struct thermal_zone_device *tz) +{ + if (!tz->governor || !tz->governor->update_tz) + return; + + tz->governor->update_tz(tz, THERMAL_INSTANCE_WEIGHT_UPDATE); +} + ssize_t weight_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -974,6 +982,7 @@ ssize_t weight_store(struct device *dev, struct device_attribute *attr, /* Don't race with governors using the 'weight' value */ mutex_lock(&tz->lock); instance->weight = weight; + handle_weight_update(tz); mutex_unlock(&tz->lock); return count; diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 9fd0d3fb234a..24176f075fbf 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -52,6 +52,7 @@ enum thermal_notify_event { THERMAL_TABLE_CHANGED, /* Thermal table(s) changed */ THERMAL_EVENT_KEEP_ALIVE, /* Request for user space handler to respond */ THERMAL_INSTANCE_LIST_UPDATE, /* List of thermal instances changed */ + THERMAL_INSTANCE_WEIGHT_UPDATE, /* Thermal instance weight changed */ }; /** -- 2.25.1
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