diff options
author | Zhang Rui <rui.zhang@intel.com> | 2013-03-26 08:38:29 (GMT) |
---|---|---|
committer | Zhang Rui <rui.zhang@intel.com> | 2013-04-14 15:28:43 (GMT) |
commit | 80a26a5c22b90a82b8696cb72c1d09d525ada53e (patch) | |
tree | 4ab06fb87e9e3e6364ad234b0594f6ac40227cdc /drivers/thermal | |
parent | 5fc024ab474de7d5798b7ad85f3df260dbab1353 (diff) | |
download | linux-80a26a5c22b90a82b8696cb72c1d09d525ada53e.tar.xz |
Thermal: build thermal governors into thermal_sys module
The thermal governors are part of the thermal framework,
rather than a seperate feature/module.
Because the generic thermal layer can not work without
thermal governors, and it must load the thermal governors
during its initialization.
Build them into one module in this patch.
This also fix a problem that the generic thermal layer does not
work when CONFIG_THERMAL=m and CONFIG_THERMAL_GOV_XXX=y.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r-- | drivers/thermal/Makefile | 6 | ||||
-rw-r--r-- | drivers/thermal/fair_share.c | 15 | ||||
-rw-r--r-- | drivers/thermal/step_wise.c | 16 | ||||
-rw-r--r-- | drivers/thermal/thermal_core.c | 59 | ||||
-rw-r--r-- | drivers/thermal/thermal_core.h | 27 | ||||
-rw-r--r-- | drivers/thermal/user_space.c | 15 |
6 files changed, 84 insertions, 54 deletions
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 1bf2eab..b17bfb0 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -6,9 +6,9 @@ obj-$(CONFIG_THERMAL) += thermal_sys.o thermal_sys-y += thermal_core.o # governors -obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE) += fair_share.o -obj-$(CONFIG_THERMAL_GOV_STEP_WISE) += step_wise.o -obj-$(CONFIG_THERMAL_GOV_USER_SPACE) += user_space.o +thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE) += fair_share.o +thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE) += step_wise.o +thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE) += user_space.o # cpufreq cooling obj-$(CONFIG_CPU_THERMAL) += cpu_cooling.o diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c index 792479f..944ba2f 100644 --- a/drivers/thermal/fair_share.c +++ b/drivers/thermal/fair_share.c @@ -22,9 +22,6 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> #include <linux/thermal.h> #include "thermal_core.h" @@ -111,23 +108,15 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip) static struct thermal_governor thermal_gov_fair_share = { .name = "fair_share", .throttle = fair_share_throttle, - .owner = THIS_MODULE, }; -static int __init thermal_gov_fair_share_init(void) +int thermal_gov_fair_share_register(void) { return thermal_register_governor(&thermal_gov_fair_share); } -static void __exit thermal_gov_fair_share_exit(void) +void thermal_gov_fair_share_unregister(void) { thermal_unregister_governor(&thermal_gov_fair_share); } -/* This should load after thermal framework */ -fs_initcall(thermal_gov_fair_share_init); -module_exit(thermal_gov_fair_share_exit); - -MODULE_AUTHOR("Durgadoss R"); -MODULE_DESCRIPTION("A simple weight based thermal throttling governor"); -MODULE_LICENSE("GPL"); diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c index ca4f79f..4d4ddae 100644 --- a/drivers/thermal/step_wise.c +++ b/drivers/thermal/step_wise.c @@ -22,9 +22,6 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> #include <linux/thermal.h> #include "thermal_core.h" @@ -186,23 +183,14 @@ static int step_wise_throttle(struct thermal_zone_device *tz, int trip) static struct thermal_governor thermal_gov_step_wise = { .name = "step_wise", .throttle = step_wise_throttle, - .owner = THIS_MODULE, }; -static int __init thermal_gov_step_wise_init(void) +int thermal_gov_step_wise_register(void) { return thermal_register_governor(&thermal_gov_step_wise); } -static void __exit thermal_gov_step_wise_exit(void) +void thermal_gov_step_wise_unregister(void) { thermal_unregister_governor(&thermal_gov_step_wise); } - -/* This should load after thermal framework */ -fs_initcall(thermal_gov_step_wise_init); -module_exit(thermal_gov_step_wise_exit); - -MODULE_AUTHOR("Durgadoss R"); -MODULE_DESCRIPTION("A step-by-step thermal throttling governor"); -MODULE_LICENSE("GPL"); diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 5b7863a..4cdc3e3 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -99,7 +99,6 @@ int thermal_register_governor(struct thermal_governor *governor) return err; } -EXPORT_SYMBOL_GPL(thermal_register_governor); void thermal_unregister_governor(struct thermal_governor *governor) { @@ -127,7 +126,6 @@ exit: mutex_unlock(&thermal_governor_lock); return; } -EXPORT_SYMBOL_GPL(thermal_unregister_governor); static int get_idr(struct idr *idr, struct mutex *lock, int *id) { @@ -1858,30 +1856,69 @@ static inline int genetlink_init(void) { return 0; } static inline void genetlink_exit(void) {} #endif /* !CONFIG_NET */ +static int __init thermal_register_governors(void) +{ + int result; + + result = thermal_gov_step_wise_register(); + if (result) + return result; + + result = thermal_gov_fair_share_register(); + if (result) + return result; + + return thermal_gov_user_space_register(); +} + +static void thermal_unregister_governors(void) +{ + thermal_gov_step_wise_unregister(); + thermal_gov_fair_share_unregister(); + thermal_gov_user_space_unregister(); +} + static int __init thermal_init(void) { - int result = 0; + int result; + + result = thermal_register_governors(); + if (result) + goto error; result = class_register(&thermal_class); - if (result) { - idr_destroy(&thermal_tz_idr); - idr_destroy(&thermal_cdev_idr); - mutex_destroy(&thermal_idr_lock); - mutex_destroy(&thermal_list_lock); - return result; - } + if (result) + goto unregister_governors; + result = genetlink_init(); + if (result) + goto unregister_class; + + return 0; + +unregister_governors: + thermal_unregister_governors(); +unregister_class: + class_unregister(&thermal_class); +error: + idr_destroy(&thermal_tz_idr); + idr_destroy(&thermal_cdev_idr); + mutex_destroy(&thermal_idr_lock); + mutex_destroy(&thermal_list_lock); + mutex_destroy(&thermal_governor_lock); return result; } static void __exit thermal_exit(void) { + genetlink_exit(); class_unregister(&thermal_class); + thermal_unregister_governors(); idr_destroy(&thermal_tz_idr); idr_destroy(&thermal_cdev_idr); mutex_destroy(&thermal_idr_lock); mutex_destroy(&thermal_list_lock); - genetlink_exit(); + mutex_destroy(&thermal_governor_lock); } fs_initcall(thermal_init); diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index 0d3205a..7cf2f66 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -50,4 +50,31 @@ struct thermal_instance { struct list_head cdev_node; /* node in cdev->thermal_instances */ }; +int thermal_register_governor(struct thermal_governor *); +void thermal_unregister_governor(struct thermal_governor *); + +#ifdef CONFIG_THERMAL_GOV_STEP_WISE +int thermal_gov_step_wise_register(void); +void thermal_gov_step_wise_unregister(void); +#else +static inline int thermal_gov_step_wise_register(void) { return 0; } +static inline void thermal_gov_step_wise_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_STEP_WISE */ + +#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE +int thermal_gov_fair_share_register(void); +void thermal_gov_fair_share_unregister(void); +#else +static inline int thermal_gov_fair_share_register(void) { return 0; } +static inline void thermal_gov_fair_share_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ + +#ifdef CONFIG_THERMAL_GOV_USER_SPACE +int thermal_gov_user_space_register(void); +void thermal_gov_user_space_unregister(void); +#else +static inline int thermal_gov_user_space_register(void) { return 0; } +static inline void thermal_gov_user_space_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_USER_SPACE */ + #endif /* __THERMAL_CORE_H__ */ diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c index 6bbb380..10adcdd 100644 --- a/drivers/thermal/user_space.c +++ b/drivers/thermal/user_space.c @@ -22,9 +22,6 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> #include <linux/thermal.h> #include "thermal_core.h" @@ -46,23 +43,15 @@ static int notify_user_space(struct thermal_zone_device *tz, int trip) static struct thermal_governor thermal_gov_user_space = { .name = "user_space", .throttle = notify_user_space, - .owner = THIS_MODULE, }; -static int __init thermal_gov_user_space_init(void) +int thermal_gov_user_space_register(void) { return thermal_register_governor(&thermal_gov_user_space); } -static void __exit thermal_gov_user_space_exit(void) +void thermal_gov_user_space_unregister(void) { thermal_unregister_governor(&thermal_gov_user_space); } -/* This should load after thermal framework */ -fs_initcall(thermal_gov_user_space_init); -module_exit(thermal_gov_user_space_exit); - -MODULE_AUTHOR("Durgadoss R"); -MODULE_DESCRIPTION("A user space Thermal notifier"); -MODULE_LICENSE("GPL"); |