函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\bfq-iosched.c Create Date:2022-07-27 19:32:58
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：bfq_update_io_seektime

函数原型：static void bfq_update_io_seektime(struct bfq_data *bfqd, struct bfq_queue *bfqq, struct request *rq)

返回类型：void

参数：

类型参数名称
struct bfq_data *bfqd
struct bfq_queue *bfqq
struct request *rq
5209  vector: a 1 for each seeky requests in history 左移等于1位
5210  vector: a 1 for each seeky requests in history 或等于BFQ_RQ_SEEKY(bfqd, position of the last request enqueued , rq)
5212  如果actor by which the weight of this queue is multiplied 大于1且current maximum weight-raising time for this queue 恒等于 Maximum weight-raising duration for soft real-time processes 且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)则Must be called with bfqq != NULL
调用者
名称描述
__bfq_insert_requestrns true if it causes the idle timer to be disabled