Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\bfq-iosched.c Create Date:2022-07-28 17:57:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:bfq_update_io_seektime

Proto:static void bfq_update_io_seektime(struct bfq_data *bfqd, struct bfq_queue *bfqq, struct request *rq)

Type:void

Parameter:

TypeParameterName
struct bfq_data *bfqd
struct bfq_queue *bfqq
struct request *rq
5209  vector: a 1 for each seeky requests in history <<= 1
5210  vector: a 1 for each seeky requests in history |= BFQ_RQ_SEEKY(bfqd, position of the last request enqueued , rq)
5212  If actor by which the weight of this queue is multiplied > 1 && current maximum weight-raising time for this queue == Maximum weight-raising duration for soft real-time processes && Sync random I/O is likely to be confused with soft real-time I/O,* because it is characterized by limited throughput and apparently* isochronous arrival pattern(bfqq) Then Must be called with bfqq != NULL
Caller
NameDescribe
__bfq_insert_requestrns true if it causes the idle timer to be disabled