函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-iolatency.c Create Date:2022-07-27 19:21:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：iolatency_clear_scaling

函数原型：static void iolatency_clear_scaling(struct blkcg_gq *blkg)

返回类型：void

参数：

类型参数名称
struct blkcg_gq *blkg
771  如果 all non-root blkcg_gq's are guaranteed to have access to parent 则
772  iolat等于blkg_to_lat( all non-root blkcg_gq's are guaranteed to have access to parent )
774  如果非iolat则返回
777  lat_info等于child_lat
778  加自旋锁
779  atomic_set( & Cookie to tell if we need to scale up or down. , DEFAULT_SCALE_COOKIE)
780  Last time we adjusted the scale of everybody. 等于0
781  The guy who actually changed the latency numbers. = NULL
782  The latency that we missed. 等于0
783  自旋锁解锁
调用者
名称描述
iolatency_set_limit
iolatency_pd_offline