#include <linux/plist.h>
#include <linux/notifier.h>
#include <linux/miscdevice.h>
#include <linux/device.h>
#include <linux/workqueue.h>
Go to the source code of this file.
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| int | pm_qos_update_target (struct pm_qos_constraints *c, struct plist_node *node, enum pm_qos_req_action action, int value) |
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| void | pm_qos_add_request (struct pm_qos_request *req, int pm_qos_class, s32 value) |
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| void | pm_qos_update_request (struct pm_qos_request *req, s32 new_value) |
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| void | pm_qos_update_request_timeout (struct pm_qos_request *req, s32 new_value, unsigned long timeout_us) |
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| void | pm_qos_remove_request (struct pm_qos_request *req) |
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| int | pm_qos_request (int pm_qos_class) |
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| int | pm_qos_add_notifier (int pm_qos_class, struct notifier_block *notifier) |
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| int | pm_qos_remove_notifier (int pm_qos_class, struct notifier_block *notifier) |
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| int | pm_qos_request_active (struct pm_qos_request *req) |
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| s32 | pm_qos_read_value (struct pm_qos_constraints *c) |
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| #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) |
| #define PM_QOS_DEFAULT_VALUE -1 |
| #define PM_QOS_DEV_LAT_DEFAULT_VALUE 0 |
| #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) |
| #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 |
- Enumerator:
| PM_QOS_RESERVED |
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| PM_QOS_CPU_DMA_LATENCY |
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| PM_QOS_NETWORK_LATENCY |
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| PM_QOS_NETWORK_THROUGHPUT |
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| PM_QOS_NUM_CLASSES |
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Definition at line 13 of file pm_qos.h.
- Enumerator:
| PM_QOS_ADD_REQ |
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| PM_QOS_UPDATE_REQ |
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| PM_QOS_REMOVE_REQ |
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Definition at line 61 of file pm_qos.h.
- Enumerator:
| PM_QOS_UNITIALIZED |
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| PM_QOS_MAX |
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| PM_QOS_MIN |
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Definition at line 41 of file pm_qos.h.
pm_qos_add_notifier - sets notification entry for changes to target value : identifies which qos target changes should be notified. : notifier block managed by caller.
will register the notifier into a notification chain that gets called upon changes to the pm_qos_class target value.
Definition at line 374 of file qos.c.
pm_qos_add_request - inserts new qos request into the list : pointer to a preallocated handle : identifies which list of qos request to use : defines the qos request
This function inserts a new entry in the pm_qos_class list of requested qos performance characteristics. It recomputes the aggregate QoS expectations for the pm_qos_class of parameters and initializes the pm_qos_request handle. Caller needs to save this handle for later use in updates and removal.
Definition at line 261 of file qos.c.
pm_qos_remove_notifier - deletes notification entry from chain. : identifies which qos target changes are notified. : notifier block to be removed.
will remove the notifier from the notification chain that gets called upon changes to the pm_qos_class target value.
Definition at line 394 of file qos.c.
pm_qos_remove_request - modifies an existing qos request : handle to request list element
Will remove pm qos request from the list of constraints and recompute the current target value for the pm_qos_class. Call this on slow code paths.
Definition at line 345 of file qos.c.
pm_qos_request - returns current system wide qos expectation : identification of which qos value is requested
This function returns the current target value.
Definition at line 221 of file qos.c.
pm_qos_update_request - modifies an existing qos request : handle to list element holding a pm_qos request to use : defines the qos request
Updates an existing qos request for the pm_qos_class of parameters along with updating the target pm_qos_class value.
Attempts are made to make this code callable on hot code paths.
Definition at line 288 of file qos.c.
pm_qos_update_request_timeout - modifies an existing qos request temporarily. : handle to list element holding a pm_qos request to use : defines the temporal qos request : the effective duration of this qos request in usecs.
After timeout_us, this qos request is cancelled automatically.
Definition at line 317 of file qos.c.
pm_qos_update_target - manages the constraints list and calls the notifiers if needed
This function returns 1 if the aggregated constraint value has changed, 0 otherwise.
Definition at line 167 of file qos.c.
1.8.2