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thermal: core: Introduce thermal_zone_device_exec()

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Introduce a new helper function, thermal_zone_device_exec(), that can
be used by drivers to run a given callback routine under the zone lock.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2023-08-17 11:23:32 +02:00
parent bc840ea5f9
commit 9a99a996d1
2 changed files with 23 additions and 0 deletions
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19
drivers/thermal/thermal_core.c
View file

@ -497,6 +497,25 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
} }
EXPORT_SYMBOL_GPL(thermal_zone_device_update); EXPORT_SYMBOL_GPL(thermal_zone_device_update);
/**
* thermal_zone_device_exec - Run a callback under the zone lock.
* @tz: Thermal zone.
* @cb: Callback to run.
* @data: Data to pass to the callback.
*/
void thermal_zone_device_exec(struct thermal_zone_device *tz,
void (*cb)(struct thermal_zone_device *,
unsigned long),
unsigned long data)
{
mutex_lock(&tz->lock);
cb(tz, data);
mutex_unlock(&tz->lock);
}
EXPORT_SYMBOL_GPL(thermal_zone_device_exec);
static void thermal_zone_device_check(struct work_struct *work) static void thermal_zone_device_check(struct work_struct *work)
{ {
struct thermal_zone_device *tz = container_of(work, struct struct thermal_zone_device *tz = container_of(work, struct

4
include/linux/thermal.h
View file

@ -323,6 +323,10 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *); struct thermal_cooling_device *);
void thermal_zone_device_update(struct thermal_zone_device *, void thermal_zone_device_update(struct thermal_zone_device *,
enum thermal_notify_event); enum thermal_notify_event);
void thermal_zone_device_exec(struct thermal_zone_device *tz,
void (*cb)(struct thermal_zone_device *,
unsigned long),
unsigned long data);
struct thermal_cooling_device *thermal_cooling_device_register(const char *, struct thermal_cooling_device *thermal_cooling_device_register(const char *,
void *, const struct thermal_cooling_device_ops *); void *, const struct thermal_cooling_device_ops *);