diff options
| author | Lukasz Luba <lukasz.luba@arm.com> | 2023-12-20 23:17:45 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-12-29 18:01:00 +0100 |
| commit | a8c959402d4dd6823918b33828d79900ae58c700 (patch) | |
| tree | 3dff402f5da641674c96d3f1ea629402b0fbe701 /drivers/thermal | |
| parent | 04c3b03044034ce50886f2c0d1c595ff25f45085 (diff) | |
| download | linux-a8c959402d4dd6823918b33828d79900ae58c700.tar.gz | |
thermal: core: Add governor callback for thermal zone change
Add a new callback to the struct thermal_governor. It can be used for
updating governors when there is a change in the thermal zone internals,
e.g. thermal cooling device is bind to the thermal zone.
That makes possible to move some heavy operations like memory allocations
related to the number of cooling instances out of the throttle() callback.
Both callback code paths (throttle() and update_tz()) are protected with
the same thermal zone lock, which guaranties the consistency.
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/thermal_core.c | 14 | ||||
| -rw-r--r-- | drivers/thermal/thermal_core.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 3ffccd73b19e3..58958288b5594 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -309,6 +309,15 @@ static void handle_non_critical_trips(struct thermal_zone_device *tz, def_governor->throttle(tz, trip); } +void thermal_governor_update_tz(struct thermal_zone_device *tz, + enum thermal_notify_event reason) +{ + if (!tz->governor || !tz->governor->update_tz) + return; + + tz->governor->update_tz(tz, reason); +} + void thermal_zone_device_critical(struct thermal_zone_device *tz) { /* @@ -715,6 +724,8 @@ int thermal_bind_cdev_to_trip(struct thermal_zone_device *tz, list_add_tail(&dev->tz_node, &tz->thermal_instances); list_add_tail(&dev->cdev_node, &cdev->thermal_instances); atomic_set(&tz->need_update, 1); + + thermal_governor_update_tz(tz, THERMAL_TZ_BIND_CDEV); } mutex_unlock(&cdev->lock); mutex_unlock(&tz->lock); @@ -773,6 +784,9 @@ int thermal_unbind_cdev_from_trip(struct thermal_zone_device *tz, if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) { list_del(&pos->tz_node); list_del(&pos->cdev_node); + + thermal_governor_update_tz(tz, THERMAL_TZ_UNBIND_CDEV); + mutex_unlock(&cdev->lock); mutex_unlock(&tz->lock); goto unbind; diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index fe2917a74054a..479c3b6917e4f 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -114,6 +114,8 @@ int thermal_zone_device_set_policy(struct thermal_zone_device *, char *); int thermal_build_list_of_policies(char *buf); void __thermal_zone_device_update(struct thermal_zone_device *tz, enum thermal_notify_event event); +void thermal_governor_update_tz(struct thermal_zone_device *tz, + enum thermal_notify_event reason); /* Helpers */ #define for_each_trip(__tz, __trip) \ |