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1 | #ifndef INT_BLK_MQ_H | |
2 | #define INT_BLK_MQ_H | |
3 | ||
4 | struct blk_mq_tag_set; | |
5 | ||
6 | struct blk_mq_ctx { | |
7 | struct { | |
8 | spinlock_t lock; | |
9 | struct list_head rq_list; | |
10 | } ____cacheline_aligned_in_smp; | |
11 | ||
12 | unsigned int cpu; | |
13 | unsigned int index_hw; | |
14 | ||
15 | unsigned int last_tag ____cacheline_aligned_in_smp; | |
16 | ||
17 | /* incremented at dispatch time */ | |
18 | unsigned long rq_dispatched[2]; | |
19 | unsigned long rq_merged; | |
20 | ||
21 | /* incremented at completion time */ | |
22 | unsigned long ____cacheline_aligned_in_smp rq_completed[2]; | |
23 | ||
24 | struct request_queue *queue; | |
25 | struct kobject kobj; | |
26 | } ____cacheline_aligned_in_smp; | |
27 | ||
28 | void __blk_mq_complete_request(struct request *rq); | |
29 | void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); | |
30 | void blk_mq_init_flush(struct request_queue *q); | |
31 | void blk_mq_drain_queue(struct request_queue *q); | |
32 | void blk_mq_free_queue(struct request_queue *q); | |
33 | void blk_mq_clone_flush_request(struct request *flush_rq, | |
34 | struct request *orig_rq); | |
35 | ||
36 | /* | |
37 | * CPU hotplug helpers | |
38 | */ | |
39 | struct blk_mq_cpu_notifier; | |
40 | void blk_mq_init_cpu_notifier(struct blk_mq_cpu_notifier *notifier, | |
41 | void (*fn)(void *, unsigned long, unsigned int), | |
42 | void *data); | |
43 | void blk_mq_register_cpu_notifier(struct blk_mq_cpu_notifier *notifier); | |
44 | void blk_mq_unregister_cpu_notifier(struct blk_mq_cpu_notifier *notifier); | |
45 | void blk_mq_cpu_init(void); | |
46 | void blk_mq_enable_hotplug(void); | |
47 | void blk_mq_disable_hotplug(void); | |
48 | ||
49 | /* | |
50 | * CPU -> queue mappings | |
51 | */ | |
52 | extern unsigned int *blk_mq_make_queue_map(struct blk_mq_tag_set *set); | |
53 | extern int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues); | |
54 | ||
55 | #endif |