Function report |
Source Code:block\bfq-iosched.c |
Create Date:2022-07-28 17:56:27 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:For a queue that becomes empty, device idling is allowed only if* this function returns true for that queue
Proto:static bool bfq_better_to_idle(struct bfq_queue *bfqq)
Type:bool
Parameter:
Type | Parameter | Name |
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struct bfq_queue * | bfqq |
4182 | bfqd = parent bfq_data |
4186 | If Value for the false possibility is greater at compile time(!bfqq_process_refs(bfqq)) Then Return false |
4200 | If maximum idling time == 0 || Not bfq_bfqq_sync(bfqq) || bfq_class_idle(bfqq) Then Return false |
4207 | idling_needed_for_service_guar = There is a case where idling does not have to be performed for* throughput concerns, but to preserve the throughput share of* the process associated with bfqq |
4216 | Return idling_boosts_thr_with_no_issue || idling_needed_for_service_guar |
Name | Describe |
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bfq_bfqq_must_idle | If the in-service queue is empty but the function bfq_better_to_idle* returns true, then:* 1) the queue must remain in service and cannot be expired, and* 2) the device must be idled to wait for the possible arrival of a new* request for the queue |
bfq_select_queue | Select a queue for service. If we have a current queue in service,* check whether to continue servicing it, or retrieve and set a new one. |
bfq_completed_request |
Source code conversion tool public plug-in interface | X |
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