bfq_update_hw_tag

Name:bfq_update_hw_tag

Proto:static void bfq_update_hw_tag(struct bfq_data *bfqd)

Type:void

Parameter:

Type	Parameter	Name
struct bfq_data *	bfqd

5563

bfqq = bfq_queue in service

5565

* Maximum number of requests in driver in the last *@hw_tag_samples completed requests. = max_t - return maximum of two values, using the specified type*@type: data type to use*@x: first value*@y: second value(int, * Maximum number of requests in driver in the last *@hw_tag_samples completed requests., number of requests dispatched and waiting for completion )

5568

If flag set to one if the driver is showing a queueing behavior == 1 Then Return

5577

If number of requests dispatched and waiting for completion + number of queued requests <= hw_tag detection: parallel requests threshold and min samples needed. Then Return

5585

If bfqq && bfq_bfqq_has_short_ttime(bfqq) && umber of requests on the dispatch list or inside driver + umber of sync and async requests queued [0] + umber of sync and async requests queued [1] < hw_tag detection: parallel requests threshold and min samples needed. && number of requests dispatched and waiting for completion < hw_tag detection: parallel requests threshold and min samples needed. Then Return

5591

If number of samples used to calculate hw_tag ++ < BFQ_HW_QUEUE_SAMPLES Then Return

5594

flag set to one if the driver is showing a queueing behavior = * Maximum number of requests in driver in the last *@hw_tag_samples completed requests. > hw_tag detection: parallel requests threshold and min samples needed.

5595

* Maximum number of requests in driver in the last *@hw_tag_samples completed requests. = 0

5596

number of samples used to calculate hw_tag = 0

5598

true if the device is non rotational and performs queueing = blk_queue_nonrot( device request queue ) && flag set to one if the driver is showing a queueing behavior

**Caller**
Name	Describe
bfq_completed_request

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