函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\blk-cgroup.h Create Date:2022-07-27 06:56:16
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：lkg_lookup - lookup blkg for the specified blkcg - q pair*@blkcg: blkcg of interest*@q: request_queue of interest* Lookup blkg for the @blkcg - @q pair. This function should be called* under RCU read lock.

函数原型：static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg, struct request_queue *q)

返回类型：struct blkcg_gq

参数：

类型参数名称
struct blkcg *blkcg
struct request_queue *q
363  WARN_ON_ONCE(!rcu_read_lock_held())
364  返回:__blkg_lookup - internal version of blkg_lookup()*@blkcg: blkcg of interest*@q: request_queue of interest*@update_hint: whether to update lookup hint with the result or not* This is internal version and shouldn't be used by policy* implementations
调用者
名称描述
blkg_lookup_createlkg_lookup_create - find or create a blkg*@blkcg: target block cgroup*@q: target request_queue* This looks up or creates the blkg representing the unique pair* of the blkcg and the request_queue.
blkcg_maybe_throttle_currentlkcg_maybe_throttle_current - throttle the current task if it has been marked* This is only called if we've been marked with set_notify_resume()