pm_qos_params.h 1.2 KB

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  1. #ifndef _LINUX_PM_QOS_PARAMS_H
  2. #define _LINUX_PM_QOS_PARAMS_H
  3. /* interface for the pm_qos_power infrastructure of the linux kernel.
  4. *
  5. * Mark Gross <mgross@linux.intel.com>
  6. */
  7. #include <linux/plist.h>
  8. #include <linux/notifier.h>
  9. #include <linux/miscdevice.h>
  10. #define PM_QOS_RESERVED 0
  11. #define PM_QOS_CPU_DMA_LATENCY 1
  12. #define PM_QOS_NETWORK_LATENCY 2
  13. #define PM_QOS_NETWORK_THROUGHPUT 3
  14. #define PM_QOS_NUM_CLASSES 4
  15. #define PM_QOS_DEFAULT_VALUE -1
  16. #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC)
  17. #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC)
  18. #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0
  19. struct pm_qos_request_list {
  20. struct plist_node list;
  21. int pm_qos_class;
  22. };
  23. void pm_qos_add_request(struct pm_qos_request_list *l, int pm_qos_class, s32 value);
  24. void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
  25. s32 new_value);
  26. void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
  27. int pm_qos_request(int pm_qos_class);
  28. int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier);
  29. int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
  30. int pm_qos_request_active(struct pm_qos_request_list *req);
  31. #endif