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The PM QoS implementation files are better named kernel/power/qos.c and include/linux/pm_qos.h. The PM QoS support is compiled under the CONFIG_PM option. Signed-off-by: Jean Pihet <j-pihet@ti.com> Acked-by: markgross <markgross@thegnar.org> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
#ifndef _LINUX_PM_QOS_H
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#define _LINUX_PM_QOS_H
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/* interface for the pm_qos_power infrastructure of the linux kernel.
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*
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* Mark Gross <mgross@linux.intel.com>
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*/
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#include <linux/plist.h>
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#include <linux/notifier.h>
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#include <linux/miscdevice.h>
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#define PM_QOS_RESERVED 0
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#define PM_QOS_CPU_DMA_LATENCY 1
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#define PM_QOS_NETWORK_LATENCY 2
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#define PM_QOS_NETWORK_THROUGHPUT 3
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#define PM_QOS_NUM_CLASSES 4
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#define PM_QOS_DEFAULT_VALUE -1
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#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC)
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#define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC)
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#define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0
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struct pm_qos_request_list {
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struct plist_node list;
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int pm_qos_class;
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};
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#ifdef CONFIG_PM
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void pm_qos_add_request(struct pm_qos_request_list *l,
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int pm_qos_class, s32 value);
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void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
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s32 new_value);
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void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_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_list *req);
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#else
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static inline void pm_qos_add_request(struct pm_qos_request_list *l,
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int pm_qos_class, s32 value)
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{ return; }
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static inline void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
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s32 new_value)
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{ return; }
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static inline void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req)
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{ return; }
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static inline int pm_qos_request(int pm_qos_class)
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{ return 0; }
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static inline int pm_qos_add_notifier(int pm_qos_class,
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struct notifier_block *notifier)
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{ return 0; }
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static inline int pm_qos_remove_notifier(int pm_qos_class,
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struct notifier_block *notifier)
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{ return 0; }
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static inline int pm_qos_request_active(struct pm_qos_request_list *req)
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{ return 0; }
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#endif
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#endif
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