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author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2020-07-06 12:55:35 +0200 |
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committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2020-07-07 15:55:20 +0200 |
commit | 3d44a509c1dafb75adfe218f022ad216885c135e (patch) | |
tree | 364a25f7bc0a939092b0bc7757ad1562bf05efe0 | |
parent | 514acd00f957afa9b2a1fd521b2f180a950ee5e3 (diff) | |
download | linux-stable-3d44a509c1dafb75adfe218f022ad216885c135e.tar.gz linux-stable-3d44a509c1dafb75adfe218f022ad216885c135e.tar.bz2 linux-stable-3d44a509c1dafb75adfe218f022ad216885c135e.zip |
thermal: core: Add helpers to browse the cdev, tz and governor list
The cdev, tz and governor list, as well as their respective locks are
statically defined in the thermal_core.c file.
In order to give a sane access to these list, like browsing all the
thermal zones or all the cooling devices, let's define a set of
helpers where we pass a callback as a parameter to be called for each
thermal entity.
We keep the self-encapsulation and ensure the locks are correctly
taken when looking at the list.
Acked-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200706105538.2159-1-daniel.lezcano@linaro.org
-rw-r--r-- | drivers/thermal/thermal_core.c | 51 | ||||
-rw-r--r-- | drivers/thermal/thermal_core.h | 9 |
2 files changed, 60 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 052343c59b0a..438edd173eed 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -681,6 +681,57 @@ void thermal_zone_device_rebind_exception(struct thermal_zone_device *tz, mutex_unlock(&thermal_list_lock); } +int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *), + void *data) +{ + struct thermal_governor *gov; + int ret = 0; + + mutex_lock(&thermal_governor_lock); + list_for_each_entry(gov, &thermal_governor_list, governor_list) { + ret = cb(gov, data); + if (ret) + break; + } + mutex_unlock(&thermal_governor_lock); + + return ret; +} + +int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *, + void *), void *data) +{ + struct thermal_cooling_device *cdev; + int ret = 0; + + mutex_lock(&thermal_list_lock); + list_for_each_entry(cdev, &thermal_cdev_list, node) { + ret = cb(cdev, data); + if (ret) + break; + } + mutex_unlock(&thermal_list_lock); + + return ret; +} + +int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *), + void *data) +{ + struct thermal_zone_device *tz; + int ret = 0; + + mutex_lock(&thermal_list_lock); + list_for_each_entry(tz, &thermal_tz_list, node) { + ret = cb(tz, data); + if (ret) + break; + } + mutex_unlock(&thermal_list_lock); + + return ret; +} + void thermal_zone_device_unbind_exception(struct thermal_zone_device *tz, const char *cdev_type, size_t size) { diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index b1464b3a21e2..fc8990c22704 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -41,6 +41,15 @@ extern struct thermal_governor *__governor_thermal_table_end[]; __governor < __governor_thermal_table_end; \ __governor++) +int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *), + void *); + +int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *, + void *), void *); + +int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *), + void *thermal_governor); + struct thermal_attr { struct device_attribute attr; char name[THERMAL_NAME_LENGTH]; |