Function report |
Source Code:block\blk-iocost.c |
Create Date:2022-07-28 17:48:54 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:ioc_rqos_merge
Proto:static void ioc_rqos_merge(struct rq_qos *rqos, struct request *rq, struct bio *bio)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
struct rq_qos * | rqos | |
struct request * | rq | |
struct bio * | bio |
1803 | bio_end = bio_end_sector(bio) |
1809 | If Not enabled || Not this iocg's depth in the hierarchy and ancestors including self Then Return |
1812 | abs_cost = calc_vtime_cost(bio, iocg, true) |
1813 | If Not abs_cost Then Return |
1817 | current_hweight(iocg, NULL, & hw_inuse) |
1818 | cost = Scale @abs_cost to the inverse of @hw_inuse. The lower the hierarchical* weight, the more expensive each IO. Must round up. |
1833 | Else atomic64_add(abs_cost, & abs_vdebt) |
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