diff options
Diffstat (limited to 'include/linux/devfreq.h')
| -rw-r--r-- | include/linux/devfreq.h | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 2bae9ed3c783..c6f82d4bec9f 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -13,6 +13,7 @@ #include <linux/device.h> #include <linux/notifier.h> #include <linux/pm_opp.h> +#include <linux/pm_qos.h> #define DEVFREQ_NAME_LEN 16 @@ -107,6 +108,20 @@ struct devfreq_dev_profile { }; /** + * struct devfreq_stats - Statistics of devfreq device behavior + * @total_trans: Number of devfreq transitions. + * @trans_table: Statistics of devfreq transitions. + * @time_in_state: Statistics of devfreq states. + * @last_update: The last time stats were updated. + */ +struct devfreq_stats { + unsigned int total_trans; + unsigned int *trans_table; + u64 *time_in_state; + u64 last_update; +}; + +/** * struct devfreq - Device devfreq structure * @node: list node - contains the devices with devfreq that have been * registered. @@ -121,23 +136,23 @@ struct devfreq_dev_profile { * devfreq.nb to the corresponding register notifier call chain. * @work: delayed work for load monitoring. * @previous_freq: previously configured frequency value. + * @last_status: devfreq user device info, performance statistics * @data: Private data of the governor. The devfreq framework does not * touch this. - * @min_freq: Limit minimum frequency requested by user (0: none) - * @max_freq: Limit maximum frequency requested by user (0: none) + * @user_min_freq_req: PM QoS minimum frequency request from user (via sysfs) + * @user_max_freq_req: PM QoS maximum frequency request from user (via sysfs) * @scaling_min_freq: Limit minimum frequency requested by OPP interface * @scaling_max_freq: Limit maximum frequency requested by OPP interface * @stop_polling: devfreq polling status of a device. * @suspend_freq: frequency of a device set during suspend phase. * @resume_freq: frequency of a device set in resume phase. * @suspend_count: suspend requests counter for a device. - * @total_trans: Number of devfreq transitions - * @trans_table: Statistics of devfreq transitions - * @time_in_state: Statistics of devfreq states - * @last_stat_updated: The last time stat updated + * @stats: Statistics of devfreq device behavior * @transition_notifier_list: list head of DEVFREQ_TRANSITION_NOTIFIER notifier + * @nb_min: Notifier block for DEV_PM_QOS_MIN_FREQUENCY + * @nb_max: Notifier block for DEV_PM_QOS_MAX_FREQUENCY * - * This structure stores the devfreq information for a give device. + * This structure stores the devfreq information for a given device. * * Note that when a governor accesses entries in struct devfreq in its * functions except for the context of callbacks defined in struct @@ -161,8 +176,8 @@ struct devfreq { void *data; /* private data for governors */ - unsigned long min_freq; - unsigned long max_freq; + struct dev_pm_qos_request user_min_freq_req; + struct dev_pm_qos_request user_max_freq_req; unsigned long scaling_min_freq; unsigned long scaling_max_freq; bool stop_polling; @@ -171,13 +186,13 @@ struct devfreq { unsigned long resume_freq; atomic_t suspend_count; - /* information for device frequency transition */ - unsigned int total_trans; - unsigned int *trans_table; - unsigned long *time_in_state; - unsigned long last_stat_updated; + /* information for device frequency transitions */ + struct devfreq_stats stats; struct srcu_notifier_head transition_notifier_list; + + struct notifier_block nb_min; + struct notifier_block nb_max; }; struct devfreq_freqs { |